git.zerfleddert.de Git - proxmark3-svn/blob - client/cmdlft55xx.c

   1 //-----------------------------------------------------------------------------
   2 //
   3 // This code is licensed to you under the terms of the GNU GPL, version 2 or,
   4 // at your option, any later version. See the LICENSE.txt file for the text of
   5 // the license.
   6 //-----------------------------------------------------------------------------
   7 // Low frequency T55xx commands
   8 //-----------------------------------------------------------------------------
   9
  10 #include <stdio.h>
  11 #include <string.h>
  12 #include <inttypes.h>
  13 #include "proxmark3.h"
  14 #include "ui.h"
  15 #include "graph.h"
  16 #include "cmdmain.h"
  17 #include "cmdparser.h"
  18 #include "cmddata.h"
  19 #include "cmdlf.h"
  20 #include "cmdlft55xx.h"
  21 #include "util.h"
  22 #include "data.h"
  23 #include "lfdemod.h"
  24 #include "cmdhf14a.h" //for getTagInfo
  25
  26 #define T55x7_CONFIGURATION_BLOCK 0x00
  27 #define T55x7_PAGE0 0x00
  28 #define T55x7_PAGE1 0x01
  29 #define T55x7_PWD       0x00000010
  30 #define REGULAR_READ_MODE_BLOCK 0xFF
  31
  32 // Default configuration
  33 t55xx_conf_block_t config = { .modulation = DEMOD_ASK, .inverted = FALSE, .offset = 0x00, .block0 = 0x00, .Q5 = FALSE };
  34
  35 t55xx_conf_block_t Get_t55xx_Config(){
  36         return config;
  37 }
  38 void Set_t55xx_Config(t55xx_conf_block_t conf){
  39         config = conf;
  40 }
  41
  42 int usage_t55xx_config(){
  43         PrintAndLog("Usage: lf t55xx config [d <demodulation>] [i 1] [o <offset>] [Q5]");
  44         PrintAndLog("Options:");
  45         PrintAndLog("       h                                - This help");
  46         PrintAndLog("       b <8|16|32|40|50|64|100|128>     - Set bitrate");
  47         PrintAndLog("       d <FSK|FSK1|FSK1a|FSK2|FSK2a|ASK|PSK1|PSK2|NRZ|BI|BIa>  - Set demodulation FSK / ASK / PSK / NRZ / Biphase / Biphase A");
  48         PrintAndLog("       i [1]                            - Invert data signal, defaults to normal");
  49         PrintAndLog("       o [offset]                       - Set offset, where data should start decode in bitstream");
  50         PrintAndLog("       Q5                               - Set as Q5(T5555) chip instead of T55x7");
  51         PrintAndLog("       ST                               - Set Sequence Terminator on");
  52         PrintAndLog("");
  53         PrintAndLog("Examples:");
  54         PrintAndLog("      lf t55xx config d FSK          - FSK demodulation");
  55         PrintAndLog("      lf t55xx config d FSK i 1      - FSK demodulation, inverse data");
  56         PrintAndLog("      lf t55xx config d FSK i 1 o 3  - FSK demodulation, inverse data, offset=3,start from position 3 to decode data");
  57         PrintAndLog("");
  58         return 0;
  59 }
  60 int usage_t55xx_read(){
  61         PrintAndLog("Usage:  lf t55xx read [b <block>] [p <password>] <override_safety> <page1>");
  62         PrintAndLog("Options:");
  63         PrintAndLog("     b <block>    - block number to read. Between 0-7");
  64         PrintAndLog("     p <password> - OPTIONAL password (8 hex characters)");
  65         PrintAndLog("     o            - OPTIONAL override safety check");
  66         PrintAndLog("     1            - OPTIONAL read Page 1 instead of Page 0");
  67         PrintAndLog("     ****WARNING****");
  68         PrintAndLog("     Use of read with password on a tag not configured for a pwd");
  69         PrintAndLog("     can damage the tag");
  70     PrintAndLog("");
  71         PrintAndLog("Examples:");
  72     PrintAndLog("      lf t55xx read b 0                                - read data from block 0");
  73         PrintAndLog("      lf t55xx read b 0 p feedbeef         - read data from block 0 password feedbeef");
  74         PrintAndLog("      lf t55xx read b 0 p feedbeef o       - read data from block 0 password feedbeef safety check");
  75         PrintAndLog("");
  76         return 0;
  77 }
  78 int usage_t55xx_write(){
  79         PrintAndLog("Usage:  lf t55xx wr [b <block>] [d <data>] [p <password>] [1]");
  80         PrintAndLog("Options:");
  81         PrintAndLog("     b <block>    - block number to write. Between 0-7");
  82         PrintAndLog("     d <data>     - 4 bytes of data to write (8 hex characters)");
  83         PrintAndLog("     p <password> - OPTIONAL password 4bytes (8 hex characters)");
  84         PrintAndLog("     1            - OPTIONAL write Page 1 instead of Page 0");
  85     PrintAndLog("");
  86         PrintAndLog("Examples:");
  87         PrintAndLog("      lf t55xx write b 3 d 11223344            - write 11223344 to block 3");
  88         PrintAndLog("      lf t55xx write b 3 d 11223344 p feedbeef - write 11223344 to block 3 password feedbeef");
  89         PrintAndLog("");
  90         return 0;
  91 }
  92 int usage_t55xx_trace() {
  93         PrintAndLog("Usage:  lf t55xx trace [1]");
  94         PrintAndLog("Options:");
  95         PrintAndLog("     1             - if set, use Graphbuffer otherwise read data from tag.");
  96         PrintAndLog("");
  97         PrintAndLog("Examples:");
  98         PrintAndLog("      lf t55xx trace");
  99         PrintAndLog("      lf t55xx trace 1");
 100         PrintAndLog("");
 101         return 0;
 102 }
 103 int usage_t55xx_info() {
 104         PrintAndLog("Usage:  lf t55xx info [1]");
 105         PrintAndLog("Options:");
 106         PrintAndLog("     1             - if set, use Graphbuffer otherwise read data from tag.");
 107         PrintAndLog("");
 108         PrintAndLog("Examples:");
 109         PrintAndLog("      lf t55xx info");
 110         PrintAndLog("      lf t55xx info 1");
 111         PrintAndLog("");
 112         return 0;
 113 }
 114 int usage_t55xx_dump(){
 115         PrintAndLog("Usage:  lf t55xx dump <password> [o]");
 116         PrintAndLog("Options:");
 117         PrintAndLog("     <password>  - OPTIONAL password 4bytes (8 hex symbols)");
 118         PrintAndLog("     o           - OPTIONAL override, force pwd read despite danger to card");
 119         PrintAndLog("");
 120         PrintAndLog("Examples:");
 121         PrintAndLog("      lf t55xx dump");
 122         PrintAndLog("      lf t55xx dump feedbeef o");
 123         PrintAndLog("");
 124         return 0;
 125 }
 126 int usage_t55xx_detect(){
 127         PrintAndLog("Usage:  lf t55xx detect [1] [p <password>]");
 128         PrintAndLog("Options:");
 129         PrintAndLog("     1             - if set, use Graphbuffer otherwise read data from tag.");
 130         PrintAndLog("     p <password>  - OPTIONAL password (8 hex characters)");
 131         PrintAndLog("");
 132         PrintAndLog("Examples:");
 133         PrintAndLog("      lf t55xx detect");
 134         PrintAndLog("      lf t55xx detect 1");
 135         PrintAndLog("      lf t55xx detect p 11223344");
 136         PrintAndLog("");
 137         return 0;
 138 }
 139 int usage_t55xx_wakup(){
 140         PrintAndLog("Usage:  lf t55xx wakeup [h] p <password>");
 141         PrintAndLog("This commands send the Answer-On-Request command and leaves the readerfield ON afterwards.");
 142         PrintAndLog("Options:");
 143         PrintAndLog("     h                     - this help");
 144     PrintAndLog("     p <password>      - password 4bytes (8 hex symbols)");
 145     PrintAndLog("");
 146         PrintAndLog("Examples:");
 147     PrintAndLog("      lf t55xx wakeup p 11223344  - send wakeup password");
 148         return 0;
 149 }
 150 int usage_t55xx_bruteforce(){
 151         PrintAndLog("This command uses A) bruteforce to scan a number range");
 152         PrintAndLog("                  B) a dictionary attack");
 153     PrintAndLog("Usage: lf t55xx bruteforce [h] <start password> <end password> [i <*.dic>]");
 154     PrintAndLog("       password must be 4 bytes (8 hex symbols)");
 155         PrintAndLog("Options:");
 156         PrintAndLog("     h                     - this help");
 157         PrintAndLog("     <start_pwd> - 4 byte hex value to start pwd search at");
 158         PrintAndLog("     <end_pwd>   - 4 byte hex value to end pwd search at");
 159     PrintAndLog("     i <*.dic> - loads a default keys dictionary file <*.dic>");
 160     PrintAndLog("");
 161     PrintAndLog("Examples:");
 162     PrintAndLog("       lf t55xx bruteforce aaaaaaaa bbbbbbbb");
 163         PrintAndLog("       lf t55xx bruteforce i default_pwd.dic");
 164     PrintAndLog("");
 165     return 0;
 166 }
 167 int usage_t55xx_recoverpw(){
 168         PrintAndLog("This command uses a few tricks to try to recover mangled password");
 169         PrintAndLog("WARNING: this may brick non-password protected chips!");
 170         PrintAndLog("Usage: lf t55xx recoverpw [password]");
 171         PrintAndLog("       password must be 4 bytes (8 hex symbols)");
 172         PrintAndLog("       default password is 51243648, used by many cloners");
 173         PrintAndLog("Options:");
 174         PrintAndLog("     h           - this help");
 175         PrintAndLog("     [password]  - 4 byte hex value of password written by cloner");
 176         PrintAndLog("");
 177         PrintAndLog("Examples:");
 178         PrintAndLog("       lf t55xx recoverpw");
 179         PrintAndLog("       lf t55xx recoverpw 51243648");
 180         PrintAndLog("");
 181         return 0;
 182 }int usage_t55xx_wipe(){
 183         PrintAndLog("Usage:  lf t55xx wipe [h] [Q5]");
 184         PrintAndLog("This commands wipes a tag, fills blocks 1-7 with zeros and a default configuration block");
 185         PrintAndLog("Options:");
 186         PrintAndLog("     h     - this help");
 187         PrintAndLog("     Q5  - indicates to use the T5555 (Q5) default configuration block");
 188     PrintAndLog("");
 189         PrintAndLog("Examples:");
 190     PrintAndLog("      lf t55xx wipe    -  wipes a t55x7 tag,    config block 0x000880E0");
 191         PrintAndLog("      lf t55xx wipe Q5 -  wipes a t5555 Q5 tag, config block 0x6001F004");
 192         return 0;
 193 }
 194 static int CmdHelp(const char *Cmd);
 195
 196 void printT5xxHeader(uint8_t page){
 197         PrintAndLog("Reading Page %d:", page);
 198         PrintAndLog("blk | hex data | binary");
 199         PrintAndLog("----+----------+---------------------------------");
 200 }
 201
 202 int CmdT55xxSetConfig(const char *Cmd) {
 203
 204         uint8_t offset = 0;
 205         char modulation[5] = {0x00};
 206         char tmp = 0x00;
 207         uint8_t bitRate = 0;
 208         uint8_t rates[9] = {8,16,32,40,50,64,100,128,0};
 209         uint8_t cmdp = 0;
 210         bool errors = FALSE;
 211         while(param_getchar(Cmd, cmdp) != 0x00 && !errors)
 212         {
 213                 tmp = param_getchar(Cmd, cmdp);
 214                 switch(tmp)
 215                 {
 216                 case 'h':
 217                 case 'H':
 218                         return usage_t55xx_config();
 219                 case 'b':
 220                         errors |= param_getdec(Cmd, cmdp+1, &bitRate);
 221                         if ( !errors){
 222                                 uint8_t i = 0;
 223                                 for (; i < 9; i++){
 224                                         if (rates[i]==bitRate) {
 225                                                 config.bitrate = i;
 226                                                 break;
 227                                         }
 228                                 }
 229                                 if (i==9) errors = TRUE;
 230                         }
 231                         cmdp+=2;
 232                         break;
 233                 case 'd':
 234                         param_getstr(Cmd, cmdp+1, modulation);
 235                         cmdp += 2;
 236
 237                         if ( strcmp(modulation, "FSK" ) == 0) {
 238                                 config.modulation = DEMOD_FSK;
 239                         } else if ( strcmp(modulation, "FSK1" ) == 0) {
 240                                 config.modulation = DEMOD_FSK1;
 241                                 config.inverted=1;
 242                         } else if ( strcmp(modulation, "FSK1a" ) == 0) {
 243                                 config.modulation = DEMOD_FSK1a;
 244                                 config.inverted=0;
 245                         } else if ( strcmp(modulation, "FSK2" ) == 0) {
 246                                 config.modulation = DEMOD_FSK2;
 247                                 config.inverted=0;
 248                         } else if ( strcmp(modulation, "FSK2a" ) == 0) {
 249                                 config.modulation = DEMOD_FSK2a;
 250                                 config.inverted=1;
 251                         } else if ( strcmp(modulation, "ASK" ) == 0) {
 252                                 config.modulation = DEMOD_ASK;
 253                         } else if ( strcmp(modulation, "NRZ" ) == 0) {
 254                                 config.modulation = DEMOD_NRZ;
 255                         } else if ( strcmp(modulation, "PSK1" ) == 0) {
 256                                 config.modulation = DEMOD_PSK1;
 257                         } else if ( strcmp(modulation, "PSK2" ) == 0) {
 258                                 config.modulation = DEMOD_PSK2;
 259                         } else if ( strcmp(modulation, "PSK3" ) == 0) {
 260                                 config.modulation = DEMOD_PSK3;
 261                         } else if ( strcmp(modulation, "BIa" ) == 0) {
 262                                 config.modulation = DEMOD_BIa;
 263                                 config.inverted=1;
 264                         } else if ( strcmp(modulation, "BI" ) == 0) {
 265                                 config.modulation = DEMOD_BI;
 266                                 config.inverted=0;
 267                         } else {
 268                                 PrintAndLog("Unknown modulation '%s'", modulation);
 269                                 errors = TRUE;
 270                         }
 271                         break;
 272                 case 'i':
 273                         config.inverted = param_getchar(Cmd,cmdp+1) == '1';
 274                         cmdp+=2;
 275                         break;
 276                 case 'o':
 277                         errors |= param_getdec(Cmd, cmdp+1, &offset);
 278                         if ( !errors )
 279                                 config.offset = offset;
 280                         cmdp+=2;
 281                         break;
 282                 case 'Q':
 283                 case 'q':
 284                         config.Q5 = TRUE;
 285                         cmdp++;
 286                         break;
 287                 case 'S':
 288                 case 's':
 289                         config.ST = TRUE;
 290                         cmdp++;
 291                         break;
 292                 default:
 293                         PrintAndLog("Unknown parameter '%c'", param_getchar(Cmd, cmdp));
 294                         errors = TRUE;
 295                         break;
 296                 }
 297         }
 298
 299         // No args
 300         if (cmdp == 0) return printConfiguration( config );
 301
 302         //Validations
 303         if (errors) return usage_t55xx_config();
 304
 305         config.block0 = 0;
 306         return printConfiguration ( config );
 307 }
 308
 309 int T55xxReadBlock(uint8_t block, bool page1, bool usepwd, bool override, uint32_t password){
 310         //Password mode
 311         if ( usepwd ) {
 312                 // try reading the config block and verify that PWD bit is set before doing this!
 313                 if ( !override ) {
 314
 315                         if ( !AquireData(T55x7_PAGE0, T55x7_CONFIGURATION_BLOCK, false, 0 ) ) return 0;
 316
 317                         if ( !tryDetectModulation() ) {
 318                                 PrintAndLog("Safety Check: Could not detect if PWD bit is set in config block. Exits.");
 319                                 return 0;
 320                         } else {
 321                                 PrintAndLog("Safety Check: PWD bit is NOT set in config block. Reading without password...");
 322                                 usepwd = false;
 323                                 page1 = false;
 324                         }
 325                 } else {
 326                         PrintAndLog("Safety Check Overriden - proceeding despite risk");
 327                 }
 328         }
 329
 330         if (!AquireData(page1, block, usepwd, password) ) return 0;
 331         if (!DecodeT55xxBlock()) return 0;
 332
 333         char blk[10]={0};
 334         sprintf(blk,"%02d", block);
 335         printT55xxBlock(blk);
 336         return 1;
 337 }
 338
 339 int CmdT55xxReadBlock(const char *Cmd) {
 340         uint8_t block = REGULAR_READ_MODE_BLOCK;
 341         uint32_t password = 0; //default to blank Block 7
 342         bool usepwd = false;
 343         bool override = false;
 344         bool page1 = false;
 345         bool errors = false;
 346         uint8_t cmdp = 0;
 347         while(param_getchar(Cmd, cmdp) != 0x00 && !errors) {
 348                 switch(param_getchar(Cmd, cmdp)) {
 349                 case 'h':
 350                 case 'H':
 351                         return usage_t55xx_read();
 352                 case 'b':
 353                 case 'B':
 354                         errors |= param_getdec(Cmd, cmdp+1, &block);
 355                         cmdp += 2;
 356                         break;
 357                 case 'o':
 358                 case 'O':
 359                         override = TRUE;
 360                         cmdp++;
 361                         break;
 362                 case 'p':
 363                 case 'P':
 364                         password = param_get32ex(Cmd, cmdp+1, 0, 16);
 365                         usepwd = true;
 366                         cmdp += 2;
 367                         break;
 368                 case '1':
 369                         page1 = true;
 370                         cmdp++;
 371                         break;
 372                 default:
 373                         PrintAndLog("Unknown parameter '%c'", param_getchar(Cmd, cmdp));
 374                         errors = true;
 375                         break;
 376                 }
 377         }
 378         if (errors) return usage_t55xx_read();
 379
 380         if (block > 7 && block != REGULAR_READ_MODE_BLOCK       ) {
 381                 PrintAndLog("Block must be between 0 and 7");
 382                 return 0;
 383         }
 384
 385         printT5xxHeader(page1);
 386         return T55xxReadBlock(block, page1, usepwd, override, password);
 387 }
 388
 389 bool DecodeT55xxBlock(){
 390
 391         char buf[30] = {0x00};
 392         char *cmdStr = buf;
 393         int ans = 0;
 394         bool ST = config.ST;
 395         uint8_t bitRate[8] = {8,16,32,40,50,64,100,128};
 396         DemodBufferLen = 0x00;
 397
 398         switch( config.modulation ){
 399                 case DEMOD_FSK:
 400                         snprintf(cmdStr, sizeof(buf),"%d %d", bitRate[config.bitrate], config.inverted );
 401                         ans = FSKrawDemod(cmdStr, FALSE);
 402                         break;
 403                 case DEMOD_FSK1:
 404                 case DEMOD_FSK1a:
 405                         snprintf(cmdStr, sizeof(buf),"%d %d 8 5", bitRate[config.bitrate], config.inverted );
 406                         ans = FSKrawDemod(cmdStr, FALSE);
 407                         break;
 408                 case DEMOD_FSK2:
 409                 case DEMOD_FSK2a:
 410                         snprintf(cmdStr, sizeof(buf),"%d %d 10 8", bitRate[config.bitrate], config.inverted );
 411                         ans = FSKrawDemod(cmdStr, FALSE);
 412                         break;
 413                 case DEMOD_ASK:
 414                         snprintf(cmdStr, sizeof(buf),"%d %d 1", bitRate[config.bitrate], config.inverted );
 415                         ans = ASKDemod_ext(cmdStr, FALSE, FALSE, 1, &ST);
 416                         break;
 417                 case DEMOD_PSK1:
 418                         // skip first 160 samples to allow antenna to settle in (psk gets inverted occasionally otherwise)
 419                         save_restoreGB(1);
 420                         CmdLtrim("160");
 421                         snprintf(cmdStr, sizeof(buf),"%d %d 6", bitRate[config.bitrate], config.inverted );
 422                         ans = PSKDemod(cmdStr, FALSE);
 423                         //undo trim samples
 424                         save_restoreGB(0);
 425                         break;
 426                 case DEMOD_PSK2: //inverted won't affect this
 427                 case DEMOD_PSK3: //not fully implemented
 428                         // skip first 160 samples to allow antenna to settle in (psk gets inverted occasionally otherwise)
 429                         save_restoreGB(1);
 430                         CmdLtrim("160");
 431                         snprintf(cmdStr, sizeof(buf),"%d 0 6", bitRate[config.bitrate] );
 432                         ans = PSKDemod(cmdStr, FALSE);
 433                         psk1TOpsk2(DemodBuffer, DemodBufferLen);
 434                         //undo trim samples
 435                         save_restoreGB(0);
 436                         break;
 437                 case DEMOD_NRZ:
 438                         snprintf(cmdStr, sizeof(buf),"%d %d 1", bitRate[config.bitrate], config.inverted );
 439                         ans = NRZrawDemod(cmdStr, FALSE);
 440                         break;
 441                 case DEMOD_BI:
 442                 case DEMOD_BIa:
 443                         snprintf(cmdStr, sizeof(buf),"0 %d %d 1", bitRate[config.bitrate], config.inverted );
 444                         ans = ASKbiphaseDemod(cmdStr, FALSE);
 445                         break;
 446                 default:
 447                         return FALSE;
 448         }
 449         return (bool) ans;
 450 }
 451
 452 bool DecodeT5555TraceBlock() {
 453         DemodBufferLen = 0x00;
 454
 455         // According to datasheet. Always: RF/64, not inverted, Manchester
 456         return (bool) ASKDemod("64 0 1", FALSE, FALSE, 1);
 457 }
 458
 459 // sanity check. Don't use proxmark if it is offline and you didn't specify useGraphbuf
 460 static int SanityOfflineCheck( bool useGraphBuffer ){
 461         if ( !useGraphBuffer && offline) {
 462                 PrintAndLog("Your proxmark3 device is offline. Specify [1] to use graphbuffer data instead");
 463                 return 0;
 464         }
 465         return 1;
 466 }
 467
 468 int CmdT55xxDetect(const char *Cmd){
 469         bool errors = FALSE;
 470         bool useGB = FALSE;
 471         bool usepwd = FALSE;
 472         uint32_t password = 0;
 473         uint8_t cmdp = 0;
 474
 475         while(param_getchar(Cmd, cmdp) != 0x00 && !errors) {
 476                 switch(param_getchar(Cmd, cmdp)) {
 477                 case 'h':
 478                 case 'H':
 479                         return usage_t55xx_detect();
 480                 case 'p':
 481                 case 'P':
 482                         password = param_get32ex(Cmd, cmdp+1, 0, 16);
 483                         usepwd = TRUE;
 484                         cmdp += 2;
 485                         break;
 486                 case '1':
 487                         // use Graphbuffer data
 488                         useGB = TRUE;
 489                         cmdp++;
 490                         break;
 491                 default:
 492                         PrintAndLog("Unknown parameter '%c'", param_getchar(Cmd, cmdp));
 493                         errors = true;
 494                         break;
 495                 }
 496         }
 497         if (errors) return usage_t55xx_detect();
 498
 499         // sanity check.
 500         if (!SanityOfflineCheck(useGB)) return 1;
 501
 502         if ( !useGB) {
 503                 if ( !AquireData(T55x7_PAGE0, T55x7_CONFIGURATION_BLOCK, usepwd, password) )
 504                         return 1;
 505         }
 506
 507         if ( !tryDetectModulation() )
 508                 PrintAndLog("Could not detect modulation automatically. Try setting it manually with \'lf t55xx config\'");
 509
 510         return 0;
 511 }
 512
 513 // detect configuration?
 514 bool tryDetectModulation(){
 515         uint8_t hits = 0;
 516         t55xx_conf_block_t tests[15];
 517         int bitRate=0;
 518         uint8_t fc1 = 0, fc2 = 0, clk=0;
 519
 520         if (GetFskClock("", FALSE, FALSE)){
 521                 fskClocks(&fc1, &fc2, &clk, FALSE);
 522                 if ( FSKrawDemod("0 0", FALSE) && test(DEMOD_FSK, &tests[hits].offset, &bitRate, clk, &tests[hits].Q5)){
 523                         tests[hits].modulation = DEMOD_FSK;
 524                         if (fc1==8 && fc2 == 5)
 525                                 tests[hits].modulation = DEMOD_FSK1a;
 526                         else if (fc1==10 && fc2 == 8)
 527                                 tests[hits].modulation = DEMOD_FSK2;
 528                         tests[hits].bitrate = bitRate;
 529                         tests[hits].inverted = FALSE;
 530                         tests[hits].block0 = PackBits(tests[hits].offset, 32, DemodBuffer);
 531                         tests[hits].ST = FALSE;
 532                         ++hits;
 533                 }
 534                 if ( FSKrawDemod("0 1", FALSE) && test(DEMOD_FSK, &tests[hits].offset, &bitRate, clk, &tests[hits].Q5)) {
 535                         tests[hits].modulation = DEMOD_FSK;
 536                         if (fc1 == 8 && fc2 == 5)
 537                                 tests[hits].modulation = DEMOD_FSK1;
 538                         else if (fc1 == 10 && fc2 == 8)
 539                                 tests[hits].modulation = DEMOD_FSK2a;
 540                         tests[hits].bitrate = bitRate;
 541                         tests[hits].inverted = TRUE;
 542                         tests[hits].block0 = PackBits(tests[hits].offset, 32, DemodBuffer);
 543                         tests[hits].ST = FALSE;
 544                         ++hits;
 545                 }
 546         } else {
 547                 clk = GetAskClock("", FALSE, FALSE);
 548                 if (clk>0) {
 549                         tests[hits].ST = TRUE;
 550                         if ( ASKDemod_ext("0 0 1", FALSE, FALSE, 1, &tests[hits].ST) && test(DEMOD_ASK, &tests[hits].offset, &bitRate, clk, &tests[hits].Q5)) {
 551                                 tests[hits].modulation = DEMOD_ASK;
 552                                 tests[hits].bitrate = bitRate;
 553                                 tests[hits].inverted = FALSE;
 554                                 tests[hits].block0 = PackBits(tests[hits].offset, 32, DemodBuffer);
 555                                 ++hits;
 556                         }
 557                         tests[hits].ST = TRUE;
 558                         if ( ASKDemod_ext("0 1 1", FALSE, FALSE, 1, &tests[hits].ST)  && test(DEMOD_ASK, &tests[hits].offset, &bitRate, clk, &tests[hits].Q5)) {
 559                                 tests[hits].modulation = DEMOD_ASK;
 560                                 tests[hits].bitrate = bitRate;
 561                                 tests[hits].inverted = TRUE;
 562                                 tests[hits].block0 = PackBits(tests[hits].offset, 32, DemodBuffer);
 563                                 ++hits;
 564                         }
 565                         if ( ASKbiphaseDemod("0 0 0 2", FALSE) && test(DEMOD_BI, &tests[hits].offset, &bitRate, clk, &tests[hits].Q5) ) {
 566                                 tests[hits].modulation = DEMOD_BI;
 567                                 tests[hits].bitrate = bitRate;
 568                                 tests[hits].inverted = FALSE;
 569                                 tests[hits].block0 = PackBits(tests[hits].offset, 32, DemodBuffer);
 570                                 tests[hits].ST = FALSE;
 571                                 ++hits;
 572                         }
 573                         if ( ASKbiphaseDemod("0 0 1 2", FALSE) && test(DEMOD_BIa, &tests[hits].offset, &bitRate, clk, &tests[hits].Q5) ) {
 574                                 tests[hits].modulation = DEMOD_BIa;
 575                                 tests[hits].bitrate = bitRate;
 576                                 tests[hits].inverted = TRUE;
 577                                 tests[hits].block0 = PackBits(tests[hits].offset, 32, DemodBuffer);
 578                                 tests[hits].ST = FALSE;
 579                                 ++hits;
 580                         }
 581                 }
 582                 //undo trim from ask
 583                 //save_restoreGB(0);
 584                 clk = GetNrzClock("", FALSE, FALSE);
 585                 if (clk>0) {
 586                         if ( NRZrawDemod("0 0 1", FALSE)  && test(DEMOD_NRZ, &tests[hits].offset, &bitRate, clk, &tests[hits].Q5)) {
 587                                 tests[hits].modulation = DEMOD_NRZ;
 588                                 tests[hits].bitrate = bitRate;
 589                                 tests[hits].inverted = FALSE;
 590                                 tests[hits].block0 = PackBits(tests[hits].offset, 32, DemodBuffer);
 591                                 tests[hits].ST = FALSE;
 592                                 ++hits;
 593                         }
 594
 595                         if ( NRZrawDemod("0 1 1", FALSE)  && test(DEMOD_NRZ, &tests[hits].offset, &bitRate, clk, &tests[hits].Q5)) {
 596                                 tests[hits].modulation = DEMOD_NRZ;
 597                                 tests[hits].bitrate = bitRate;
 598                                 tests[hits].inverted = TRUE;
 599                                 tests[hits].block0 = PackBits(tests[hits].offset, 32, DemodBuffer);
 600                                 tests[hits].ST = FALSE;
 601                                 ++hits;
 602                         }
 603                 }
 604
 605                 // allow undo
 606                 // skip first 160 samples to allow antenna to settle in (psk gets inverted occasionally otherwise)
 607                 save_restoreGB(1);
 608                 CmdLtrim("160");
 609                 clk = GetPskClock("", FALSE, FALSE);
 610                 if (clk>0) {
 611                         if ( PSKDemod("0 0 6", FALSE) && test(DEMOD_PSK1, &tests[hits].offset, &bitRate, clk, &tests[hits].Q5)) {
 612                                 tests[hits].modulation = DEMOD_PSK1;
 613                                 tests[hits].bitrate = bitRate;
 614                                 tests[hits].inverted = FALSE;
 615                                 tests[hits].block0 = PackBits(tests[hits].offset, 32, DemodBuffer);
 616                                 tests[hits].ST = FALSE;
 617                                 ++hits;
 618                         }
 619                         if ( PSKDemod("0 1 6", FALSE) && test(DEMOD_PSK1, &tests[hits].offset, &bitRate, clk, &tests[hits].Q5)) {
 620                                 tests[hits].modulation = DEMOD_PSK1;
 621                                 tests[hits].bitrate = bitRate;
 622                                 tests[hits].inverted = TRUE;
 623                                 tests[hits].block0 = PackBits(tests[hits].offset, 32, DemodBuffer);
 624                                 tests[hits].ST = FALSE;
 625                                 ++hits;
 626                         }
 627                         // PSK2 - needs a call to psk1TOpsk2.
 628                         if ( PSKDemod("0 0 6", FALSE)) {
 629                                 psk1TOpsk2(DemodBuffer, DemodBufferLen);
 630                                 if (test(DEMOD_PSK2, &tests[hits].offset, &bitRate, clk, &tests[hits].Q5)){
 631                                         tests[hits].modulation = DEMOD_PSK2;
 632                                         tests[hits].bitrate = bitRate;
 633                                         tests[hits].inverted = FALSE;
 634                                         tests[hits].block0 = PackBits(tests[hits].offset, 32, DemodBuffer);
 635                                         tests[hits].ST = FALSE;
 636                                         ++hits;
 637                                 }
 638                         } // inverse waves does not affect this demod
 639                         // PSK3 - needs a call to psk1TOpsk2.
 640                         if ( PSKDemod("0 0 6", FALSE)) {
 641                                 psk1TOpsk2(DemodBuffer, DemodBufferLen);
 642                                 if (test(DEMOD_PSK3, &tests[hits].offset, &bitRate, clk, &tests[hits].Q5)){
 643                                         tests[hits].modulation = DEMOD_PSK3;
 644                                         tests[hits].bitrate = bitRate;
 645                                         tests[hits].inverted = FALSE;
 646                                         tests[hits].block0 = PackBits(tests[hits].offset, 32, DemodBuffer);
 647                                         tests[hits].ST = FALSE;
 648                                         ++hits;
 649                                 }
 650                         } // inverse waves does not affect this demod
 651                 }
 652                 //undo trim samples
 653                 save_restoreGB(0);
 654         }
 655         if ( hits == 1) {
 656                 config.modulation = tests[0].modulation;
 657                 config.bitrate = tests[0].bitrate;
 658                 config.inverted = tests[0].inverted;
 659                 config.offset = tests[0].offset;
 660                 config.block0 = tests[0].block0;
 661                 config.Q5 = tests[0].Q5;
 662                 config.ST = tests[0].ST;
 663                 printConfiguration( config );
 664                 return TRUE;
 665         }
 666
 667         if ( hits > 1) {
 668                 PrintAndLog("Found [%d] possible matches for modulation.",hits);
 669                 for(int i=0; i<hits; ++i){
 670                         PrintAndLog("--[%d]---------------", i+1);
 671                         printConfiguration( tests[i] );
 672                 }
 673         }
 674         return FALSE;
 675 }
 676
 677 bool testModulation(uint8_t mode, uint8_t modread){
 678         switch( mode ){
 679                 case DEMOD_FSK:
 680                         if (modread >= DEMOD_FSK1 && modread <= DEMOD_FSK2a) return TRUE;
 681                         break;
 682                 case DEMOD_ASK:
 683                         if (modread == DEMOD_ASK) return TRUE;
 684                         break;
 685                 case DEMOD_PSK1:
 686                         if (modread == DEMOD_PSK1) return TRUE;
 687                         break;
 688                 case DEMOD_PSK2:
 689                         if (modread == DEMOD_PSK2) return TRUE;
 690                         break;
 691                 case DEMOD_PSK3:
 692                         if (modread == DEMOD_PSK3) return TRUE;
 693                         break;
 694                 case DEMOD_NRZ:
 695                         if (modread == DEMOD_NRZ) return TRUE;
 696                         break;
 697                 case DEMOD_BI:
 698                         if (modread == DEMOD_BI) return TRUE;
 699                         break;
 700                 case DEMOD_BIa:
 701                         if (modread == DEMOD_BIa) return TRUE;
 702                         break;
 703                 default:
 704                         return FALSE;
 705         }
 706         return FALSE;
 707 }
 708
 709 bool testQ5Modulation(uint8_t   mode, uint8_t   modread){
 710         switch( mode ){
 711                 case DEMOD_FSK:
 712                         if (modread >= 4 && modread <= 5) return TRUE;
 713                         break;
 714                 case DEMOD_ASK:
 715                         if (modread == 0) return TRUE;
 716                         break;
 717                 case DEMOD_PSK1:
 718                         if (modread == 1) return TRUE;
 719                         break;
 720                 case DEMOD_PSK2:
 721                         if (modread == 2) return TRUE;
 722                         break;
 723                 case DEMOD_PSK3:
 724                         if (modread == 3) return TRUE;
 725                         break;
 726                 case DEMOD_NRZ:
 727                         if (modread == 7) return TRUE;
 728                         break;
 729                 case DEMOD_BI:
 730                         if (modread == 6) return TRUE;
 731                         break;
 732                 default:
 733                         return FALSE;
 734         }
 735         return FALSE;
 736 }
 737
 738 int convertQ5bitRate(uint8_t bitRateRead) {
 739         uint8_t expected[] = {8, 16, 32, 40, 50, 64, 100, 128};
 740         for (int i=0; i<8; i++)
 741                 if (expected[i] == bitRateRead)
 742                         return i;
 743
 744         return -1;
 745 }
 746
 747 bool testQ5(uint8_t mode, uint8_t *offset, int *fndBitRate, uint8_t     clk){
 748
 749         if ( DemodBufferLen < 64 ) return FALSE;
 750         uint8_t si = 0;
 751         for (uint8_t idx = 28; idx < 64; idx++){
 752                 si = idx;
 753                 if ( PackBits(si, 28, DemodBuffer) == 0x00 ) continue;
 754
 755                 uint8_t safer     = PackBits(si, 4, DemodBuffer); si += 4;     //master key
 756                 uint8_t resv      = PackBits(si, 8, DemodBuffer); si += 8;
 757                 // 2nibble must be zeroed.
 758                 if (safer != 0x6 && safer != 0x9) continue;
 759                 if ( resv > 0x00) continue;
 760                 //uint8_t       pageSel   = PackBits(si, 1, DemodBuffer); si += 1;
 761                 //uint8_t fastWrite = PackBits(si, 1, DemodBuffer); si += 1;
 762                 si += 1+1;
 763                 int bitRate       = PackBits(si, 6, DemodBuffer)*2 + 2; si += 6;     //bit rate
 764                 if (bitRate > 128 || bitRate < 8) continue;
 765
 766                 //uint8_t AOR       = PackBits(si, 1, DemodBuffer); si += 1;
 767                 //uint8_t PWD       = PackBits(si, 1, DemodBuffer); si += 1;
 768                 //uint8_t pskcr     = PackBits(si, 2, DemodBuffer); si += 2;  //could check psk cr
 769                 //uint8_t inverse   = PackBits(si, 1, DemodBuffer); si += 1;
 770                 si += 1+1+2+1;
 771                 uint8_t modread   = PackBits(si, 3, DemodBuffer); si += 3;
 772                 uint8_t maxBlk    = PackBits(si, 3, DemodBuffer); si += 3;
 773                 //uint8_t ST        = PackBits(si, 1, DemodBuffer); si += 1;
 774                 if (maxBlk == 0) continue;
 775                 //test modulation
 776                 if (!testQ5Modulation(mode, modread)) continue;
 777                 if (bitRate != clk) continue;
 778                 *fndBitRate = convertQ5bitRate(bitRate);
 779                 if (*fndBitRate < 0) continue;
 780                 *offset = idx;
 781
 782                 return TRUE;
 783         }
 784         return FALSE;
 785 }
 786
 787 bool testBitRate(uint8_t readRate, uint8_t clk){
 788         uint8_t expected[] = {8, 16, 32, 40, 50, 64, 100, 128};
 789         if (expected[readRate] == clk)
 790                 return true;
 791
 792         return false;
 793 }
 794
 795 bool test(uint8_t mode, uint8_t *offset, int *fndBitRate, uint8_t clk, bool *Q5){
 796
 797         if ( DemodBufferLen < 64 ) return FALSE;
 798         uint8_t si = 0;
 799         for (uint8_t idx = 28; idx < 64; idx++){
 800                 si = idx;
 801                 if ( PackBits(si, 28, DemodBuffer) == 0x00 ) continue;
 802
 803                 uint8_t safer    = PackBits(si, 4, DemodBuffer); si += 4;     //master key
 804                 uint8_t resv     = PackBits(si, 4, DemodBuffer); si += 4;     //was 7 & +=7+3 //should be only 4 bits if extended mode
 805                 // 2nibble must be zeroed.
 806                 // moved test to here, since this gets most faults first.
 807                 if ( resv > 0x00) continue;
 808
 809                 uint8_t xtRate   = PackBits(si, 3, DemodBuffer); si += 3;     //extended mode part of rate
 810                 int bitRate  = PackBits(si, 3, DemodBuffer); si += 3;     //bit rate
 811                 if (bitRate > 7) continue;
 812                 uint8_t extend   = PackBits(si, 1, DemodBuffer); si += 1;     //bit 15 extended mode
 813                 uint8_t modread  = PackBits(si, 5, DemodBuffer); si += 5+2+1;
 814                 //uint8_t pskcr   = PackBits(si, 2, DemodBuffer); si += 2+1;  //could check psk cr
 815                 //uint8_t nml01    = PackBits(si, 1, DemodBuffer); si += 1+5;   //bit 24, 30, 31 could be tested for 0 if not extended mode
 816                 //uint8_t nml02    = PackBits(si, 2, DemodBuffer); si += 2;
 817
 818                 //if extended mode
 819                 bool extMode =( (safer == 0x6 || safer == 0x9) && extend) ? TRUE : FALSE;
 820
 821                 if (!extMode){
 822                         if (xtRate) continue;  //nml01 || nml02 ||  caused issues on noralys tags
 823                 }
 824                 //test modulation
 825                 if (!testModulation(mode, modread)) continue;
 826                 if (!testBitRate(bitRate, clk)) continue;
 827                 *fndBitRate = bitRate;
 828                 *offset = idx;
 829                 *Q5 = FALSE;
 830                 return TRUE;
 831         }
 832         if (testQ5(mode, offset, fndBitRate, clk)) {
 833                 *Q5 = TRUE;
 834                 return TRUE;
 835         }
 836         return FALSE;
 837 }
 838
 839 void printT55xxBlock(const char *blockNum){
 840
 841         uint8_t i = config.offset;
 842         uint8_t endpos = 32 + i;
 843         uint32_t blockData = 0;
 844         uint8_t bits[64] = {0x00};
 845
 846         if ( !DemodBufferLen) return;
 847
 848         if ( endpos > DemodBufferLen){
 849                 PrintAndLog("The configured offset %d is too big. Possible offset: %d)", i, DemodBufferLen-32);
 850                 return;
 851         }
 852
 853         for (; i < endpos; ++i)
 854                 bits[i - config.offset] = DemodBuffer[i];
 855
 856         blockData = PackBits(0, 32, bits);
 857
 858         PrintAndLog(" %s | %08X | %s", blockNum, blockData, sprint_bin(bits,32));
 859 }
 860
 861 int special(const char *Cmd) {
 862         uint32_t blockData = 0;
 863         uint8_t bits[32] = {0x00};
 864
 865         PrintAndLog("OFFSET | DATA  | BINARY");
 866         PrintAndLog("----------------------------------------------------");
 867         int i,j = 0;
 868         for (; j < 64; ++j){
 869
 870                 for (i = 0; i < 32; ++i)
 871                         bits[i]=DemodBuffer[j+i];
 872
 873                 blockData = PackBits(0, 32, bits);
 874
 875                 PrintAndLog("%02d | 0x%08X | %s",j , blockData, sprint_bin(bits,32));
 876         }
 877         return 0;
 878 }
 879
 880 int printConfiguration( t55xx_conf_block_t b){
 881         PrintAndLog("Chip Type  : %s", (b.Q5) ? "T5555(Q5)" : "T55x7");
 882         PrintAndLog("Modulation : %s", GetSelectedModulationStr(b.modulation) );
 883         PrintAndLog("Bit Rate   : %s", GetBitRateStr(b.bitrate) );
 884         PrintAndLog("Inverted   : %s", (b.inverted) ? "Yes" : "No" );
 885         PrintAndLog("Offset     : %d", b.offset);
 886         PrintAndLog("Seq. Term. : %s", (b.ST) ? "Yes" : "No" );
 887         PrintAndLog("Block0     : 0x%08X", b.block0);
 888         PrintAndLog("");
 889         return 0;
 890 }
 891
 892 int CmdT55xxWakeUp(const char *Cmd) {
 893         uint32_t password = 0;
 894         uint8_t cmdp = 0;
 895         bool errors = false;
 896         while(param_getchar(Cmd, cmdp) != 0x00 && !errors) {
 897                 switch(param_getchar(Cmd, cmdp)) {
 898                 case 'h':
 899                 case 'H':
 900                         return usage_t55xx_wakup();
 901                 case 'p':
 902                 case 'P':
 903                         password = param_get32ex(Cmd, cmdp+1, 0, 16);
 904                         cmdp += 2;
 905                         errors = false;
 906                         break;
 907                 default:
 908                         PrintAndLog("Unknown parameter '%c'", param_getchar(Cmd, cmdp));
 909                         errors = true;
 910                         break;
 911                 }
 912         }
 913         if (errors) return usage_t55xx_wakup();
 914
 915         UsbCommand c = {CMD_T55XX_WAKEUP, {password, 0, 0}};
 916         clearCommandBuffer();
 917         SendCommand(&c);
 918         PrintAndLog("Wake up command sent. Try read now");
 919         return 0;
 920 }
 921
 922 int CmdT55xxWriteBlock(const char *Cmd) {
 923         uint8_t block = 0xFF; //default to invalid block
 924         uint32_t data = 0; //default to blank Block
 925         uint32_t password = 0; //default to blank Block 7
 926         bool usepwd = false;
 927         bool page1 = false;
 928         bool gotdata = false;
 929         bool errors = false;
 930         uint8_t cmdp = 0;
 931         while(param_getchar(Cmd, cmdp) != 0x00 && !errors) {
 932                 switch(param_getchar(Cmd, cmdp)) {
 933                 case 'h':
 934                 case 'H':
 935                         return usage_t55xx_write();
 936                 case 'b':
 937                 case 'B':
 938                         errors |= param_getdec(Cmd, cmdp+1, &block);
 939                         cmdp += 2;
 940                         break;
 941                 case 'd':
 942                 case 'D':
 943                         data = param_get32ex(Cmd, cmdp+1, 0, 16);
 944                         gotdata = true;
 945                         cmdp += 2;
 946                         break;
 947                 case 'p':
 948                 case 'P':
 949                         password = param_get32ex(Cmd, cmdp+1, 0, 16);
 950                         usepwd = true;
 951                         cmdp += 2;
 952                         break;
 953                 case '1':
 954                         page1 = true;
 955                         cmdp++;
 956                         break;
 957                 default:
 958                         PrintAndLog("Unknown parameter '%c'", param_getchar(Cmd, cmdp));
 959                         errors = true;
 960                         break;
 961                 }
 962         }
 963         if (errors || !gotdata) return usage_t55xx_write();
 964
 965         if (block > 7) {
 966                 PrintAndLog("Block number must be between 0 and 7");
 967                 return 0;
 968         }
 969
 970         UsbCommand c = {CMD_T55XX_WRITE_BLOCK, {data, block, 0}};
 971         UsbCommand resp;
 972         c.d.asBytes[0] = (page1) ? 0x2 : 0;
 973
 974         char pwdStr[16] = {0};
 975         snprintf(pwdStr, sizeof(pwdStr), "pwd: 0x%08X", password);
 976
 977         PrintAndLog("Writing page %d  block: %02d  data: 0x%08X %s", page1, block, data,  (usepwd) ? pwdStr : "" );
 978
 979         //Password mode
 980         if (usepwd) {
 981                 c.arg[2] = password;
 982                 c.d.asBytes[0] |= 0x1;
 983         }
 984         clearCommandBuffer();
 985         SendCommand(&c);
 986         if (!WaitForResponseTimeout(CMD_ACK, &resp, 1000)){
 987                 PrintAndLog("Error occurred, device did not ACK write operation. (May be due to old firmware)");
 988                 return 0;
 989         }
 990         return 1;
 991 }
 992
 993 int CmdT55xxReadTrace(const char *Cmd) {
 994         char cmdp = param_getchar(Cmd, 0);
 995         bool pwdmode = false;
 996         uint32_t password = 0;
 997         if (strlen(Cmd) > 1 || cmdp == 'h' || cmdp == 'H') return usage_t55xx_trace();
 998
 999         if (strlen(Cmd)==0) {
1000                 // sanity check.
1001                 if (!SanityOfflineCheck(FALSE)) return 1;
1002
1003                 if ( !AquireData( T55x7_PAGE1, REGULAR_READ_MODE_BLOCK, pwdmode, password ) )
1004                         return 1;
1005         }
1006
1007         if ( config.Q5 ){
1008                 if (!DecodeT5555TraceBlock()) return 1;
1009         } else {
1010                 if (!DecodeT55xxBlock()) return 1;
1011         }
1012
1013         if ( !DemodBufferLen ) return 1;
1014
1015         RepaintGraphWindow();
1016         uint8_t repeat = (config.offset > 5) ? 32 : 0;
1017
1018         uint8_t si = config.offset + repeat;
1019         uint32_t bl1 = PackBits(si, 32, DemodBuffer);
1020         uint32_t bl2 = PackBits(si+32, 32, DemodBuffer);
1021
1022         if (config.Q5) {
1023                 uint32_t hdr = PackBits(si, 9,  DemodBuffer); si += 9;
1024
1025                 if (hdr != 0x1FF) {
1026                   PrintAndLog("Invalid Q5 Trace data header (expected 0x1FF, found %X)", hdr);
1027                   return 1;
1028                 }
1029
1030                 t5555_tracedata_t data = {.bl1 = bl1, .bl2 = bl2, .icr = 0, .lotidc = '?', .lotid = 0, .wafer = 0, .dw =0};
1031
1032                 data.icr     = PackBits(si, 2,  DemodBuffer); si += 2;
1033                 data.lotidc  = 'Z' - PackBits(si, 2,  DemodBuffer); si += 3;
1034
1035                 data.lotid   = PackBits(si, 4,  DemodBuffer); si += 5;
1036                 data.lotid <<= 4;
1037                 data.lotid  |= PackBits(si, 4,  DemodBuffer); si += 5;
1038                 data.lotid <<= 4;
1039                 data.lotid  |= PackBits(si, 4,  DemodBuffer); si += 5;
1040                 data.lotid <<= 4;
1041                 data.lotid  |= PackBits(si, 4,  DemodBuffer); si += 5;
1042                 data.lotid <<= 1;
1043                 data.lotid  |= PackBits(si, 1,  DemodBuffer); si += 1;
1044
1045                 data.wafer   = PackBits(si, 3,  DemodBuffer); si += 4;
1046                 data.wafer <<= 2;
1047                 data.wafer  |= PackBits(si, 2,  DemodBuffer); si += 2;
1048
1049                 data.dw      = PackBits(si, 2,  DemodBuffer); si += 3;
1050                 data.dw    <<= 4;
1051                 data.dw     |= PackBits(si, 4,  DemodBuffer); si += 5;
1052                 data.dw    <<= 4;
1053                 data.dw     |= PackBits(si, 4,  DemodBuffer); si += 5;
1054                 data.dw    <<= 4;
1055                 data.dw     |= PackBits(si, 4,  DemodBuffer); si += 5;
1056
1057                 printT5555Trace(data, repeat);
1058
1059         } else {
1060
1061                 t55x7_tracedata_t data = {.bl1 = bl1, .bl2 = bl2, .acl = 0, .mfc = 0, .cid = 0, .year = 0, .quarter = 0, .icr = 0,  .lotid = 0, .wafer = 0, .dw = 0};
1062
1063                 data.acl = PackBits(si, 8,  DemodBuffer); si += 8;
1064                 if ( data.acl != 0xE0 ) {
1065                         PrintAndLog("The modulation is most likely wrong since the ACL is not 0xE0. ");
1066                         return 1;
1067                 }
1068
1069                 data.mfc     = PackBits(si, 8,  DemodBuffer); si += 8;
1070                 data.cid     = PackBits(si, 5,  DemodBuffer); si += 5;
1071                 data.icr     = PackBits(si, 3,  DemodBuffer); si += 3;
1072                 data.year    = PackBits(si, 4,  DemodBuffer); si += 4;
1073                 data.quarter = PackBits(si, 2,  DemodBuffer); si += 2;
1074                 data.lotid   = PackBits(si, 14, DemodBuffer); si += 14;
1075                 data.wafer   = PackBits(si, 5,  DemodBuffer); si += 5;
1076                 data.dw      = PackBits(si, 15, DemodBuffer);
1077
1078                 time_t t = time(NULL);
1079                 struct tm tm = *localtime(&t);
1080                 if ( data.year > tm.tm_year-110)
1081                         data.year += 2000;
1082                 else
1083                         data.year += 2010;
1084
1085                 printT55x7Trace(data, repeat);
1086         }
1087         return 0;
1088 }
1089
1090 void printT55x7Trace( t55x7_tracedata_t data, uint8_t repeat ){
1091         PrintAndLog("-- T55x7 Trace Information ----------------------------------");
1092         PrintAndLog("-------------------------------------------------------------");
1093         PrintAndLog(" ACL Allocation class (ISO/IEC 15963-1)  : 0x%02X (%d)", data.acl, data.acl);
1094         PrintAndLog(" MFC Manufacturer ID (ISO/IEC 7816-6)    : 0x%02X (%d) - %s", data.mfc, data.mfc, getTagInfo(data.mfc));
1095         PrintAndLog(" CID                                     : 0x%02X (%d) - %s", data.cid, data.cid, GetModelStrFromCID(data.cid));
1096         PrintAndLog(" ICR IC Revision                         : %d", data.icr );
1097         PrintAndLog(" Manufactured");
1098         PrintAndLog("     Year/Quarter : %d/%d", data.year, data.quarter);
1099         PrintAndLog("     Lot ID       : %d", data.lotid );
1100         PrintAndLog("     Wafer number : %d", data.wafer);
1101         PrintAndLog("     Die Number   : %d", data.dw);
1102         PrintAndLog("-------------------------------------------------------------");
1103         PrintAndLog(" Raw Data - Page 1");
1104         PrintAndLog("     Block 1  : 0x%08X  %s", data.bl1, sprint_bin(DemodBuffer+config.offset+repeat,32) );
1105         PrintAndLog("     Block 2  : 0x%08X  %s", data.bl2, sprint_bin(DemodBuffer+config.offset+repeat+32,32) );
1106         PrintAndLog("-------------------------------------------------------------");
1107
1108         /*
1109         TRACE - BLOCK O
1110                 Bits    Definition                                                              HEX
1111                 1-8             ACL Allocation class (ISO/IEC 15963-1)  0xE0
1112                 9-16    MFC Manufacturer ID (ISO/IEC 7816-6)    0x15 Atmel Corporation
1113                 17-21   CID                                                                             0x1 = Atmel ATA5577M1  0x2 = Atmel ATA5577M2
1114                 22-24   ICR IC revision
1115                 25-28   YEAR (BCD encoded)                                              9 (= 2009)
1116                 29-30   QUARTER                                                                 1,2,3,4
1117                 31-32   LOT ID
1118
1119         TRACE - BLOCK 1
1120                 1-12    LOT ID
1121                 13-17   Wafer number
1122                 18-32   DW,  die number sequential
1123         */
1124 }
1125
1126 void printT5555Trace( t5555_tracedata_t data, uint8_t repeat ){
1127         PrintAndLog("-- T5555 (Q5) Trace Information -----------------------------");
1128         PrintAndLog("-------------------------------------------------------------");
1129         PrintAndLog(" ICR IC Revision  : %d", data.icr );
1130         PrintAndLog("     Lot          : %c%d", data.lotidc, data.lotid);
1131         PrintAndLog("     Wafer number : %d", data.wafer);
1132         PrintAndLog("     Die Number   : %d", data.dw);
1133         PrintAndLog("-------------------------------------------------------------");
1134         PrintAndLog(" Raw Data - Page 1");
1135         PrintAndLog("     Block 1  : 0x%08X  %s", data.bl1, sprint_bin(DemodBuffer+config.offset+repeat,32) );
1136         PrintAndLog("     Block 2  : 0x%08X  %s", data.bl2, sprint_bin(DemodBuffer+config.offset+repeat+32,32) );
1137
1138         /*
1139                 ** Q5 **
1140                 TRACE - BLOCK O and BLOCK1
1141                 Bits    Definition                              HEX
1142                 1-9             Header                  0x1FF
1143                 10-11 IC Revision
1144                 12-13 Lot ID char
1145                 15-35 Lot ID (NB parity)
1146                 36-41 Wafer number (NB parity)
1147                 42-58 DW, die number sequential (NB parity)
1148                 60-63 Parity bits
1149                 64    Always zero
1150         */
1151 }
1152
1153 //need to add Q5 info...
1154 int CmdT55xxInfo(const char *Cmd){
1155         /*
1156                 Page 0 Block 0 Configuration data.
1157                 Normal mode
1158                 Extended mode
1159         */
1160         bool pwdmode = false;
1161         uint32_t password = 0;
1162         char cmdp = param_getchar(Cmd, 0);
1163
1164         if (strlen(Cmd) > 1 || cmdp == 'h' || cmdp == 'H') return usage_t55xx_info();
1165
1166         if (strlen(Cmd)==0){
1167                                 // sanity check.
1168                 if (!SanityOfflineCheck(FALSE)) return 1;
1169
1170                 if ( !AquireData( T55x7_PAGE0, T55x7_CONFIGURATION_BLOCK, pwdmode, password ) )
1171                         return 1;
1172         }
1173
1174         if (!DecodeT55xxBlock()) return 1;
1175
1176         // too little space to start with
1177         if ( DemodBufferLen < 32) return 1;
1178
1179         //
1180         PrintAndLog("Offset+32 ==%d\n DemodLen == %d", config.offset + 32,DemodBufferLen );
1181
1182         uint8_t si = config.offset;
1183         uint32_t bl0      = PackBits(si, 32, DemodBuffer);
1184         uint32_t safer    = PackBits(si, 4, DemodBuffer); si += 4;
1185         uint32_t resv     = PackBits(si, 7, DemodBuffer); si += 7;
1186         uint32_t dbr      = PackBits(si, 3, DemodBuffer); si += 3;
1187         uint32_t extend   = PackBits(si, 1, DemodBuffer); si += 1;
1188         uint32_t datamod  = PackBits(si, 5, DemodBuffer); si += 5;
1189         uint32_t pskcf    = PackBits(si, 2, DemodBuffer); si += 2;
1190         uint32_t aor      = PackBits(si, 1, DemodBuffer); si += 1;
1191         uint32_t otp      = PackBits(si, 1, DemodBuffer); si += 1;
1192         uint32_t maxblk   = PackBits(si, 3, DemodBuffer); si += 3;
1193         uint32_t pwd      = PackBits(si, 1, DemodBuffer); si += 1;
1194         uint32_t sst      = PackBits(si, 1, DemodBuffer); si += 1;
1195         uint32_t fw       = PackBits(si, 1, DemodBuffer); si += 1;
1196         uint32_t inv      = PackBits(si, 1, DemodBuffer); si += 1;
1197         uint32_t por      = PackBits(si, 1, DemodBuffer); si += 1;
1198
1199         if (config.Q5) PrintAndLog("*** Warning *** Config Info read off a Q5 will not display as expected");
1200         PrintAndLog("");
1201         PrintAndLog("-- T55x7 Configuration & Tag Information --------------------");
1202         PrintAndLog("-------------------------------------------------------------");
1203         PrintAndLog(" Safer key                 : %s", GetSaferStr(safer));
1204         PrintAndLog(" reserved                  : %d", resv);
1205         PrintAndLog(" Data bit rate             : %s", GetBitRateStr(dbr));
1206         PrintAndLog(" eXtended mode             : %s", (extend) ? "Yes - Warning":"No");
1207         PrintAndLog(" Modulation                : %s", GetModulationStr(datamod));
1208         PrintAndLog(" PSK clock frequency       : %d", pskcf);
1209         PrintAndLog(" AOR - Answer on Request   : %s", (aor) ? "Yes":"No");
1210         PrintAndLog(" OTP - One Time Pad        : %s", (otp) ? "Yes - Warning":"No" );
1211         PrintAndLog(" Max block                 : %d", maxblk);
1212         PrintAndLog(" Password mode             : %s", (pwd) ? "Yes":"No");
1213         PrintAndLog(" Sequence Start Terminator : %s", (sst) ? "Yes":"No");
1214         PrintAndLog(" Fast Write                : %s", (fw)  ? "Yes":"No");
1215         PrintAndLog(" Inverse data              : %s", (inv) ? "Yes":"No");
1216         PrintAndLog(" POR-Delay                 : %s", (por) ? "Yes":"No");
1217         PrintAndLog("-------------------------------------------------------------");
1218         PrintAndLog(" Raw Data - Page 0");
1219         PrintAndLog("     Block 0  : 0x%08X  %s", bl0, sprint_bin(DemodBuffer+config.offset,32) );
1220         PrintAndLog("-------------------------------------------------------------");
1221
1222         return 0;
1223 }
1224
1225 int CmdT55xxDump(const char *Cmd){
1226
1227         uint32_t password = 0;
1228         bool override = false;
1229         char cmdp = param_getchar(Cmd, 0);
1230         if ( cmdp == 'h' || cmdp == 'H') return usage_t55xx_dump();
1231
1232         bool usepwd = ( strlen(Cmd) > 0);
1233         if ( usepwd ){
1234                 password = param_get32ex(Cmd, 0, 0, 16);
1235                 if (param_getchar(Cmd, 1) =='o' )
1236                         override = true;
1237         }
1238
1239         printT5xxHeader(0);
1240         for ( uint8_t i = 0; i < 8; ++i)
1241                 T55xxReadBlock(i, 0, usepwd, override, password);
1242
1243         printT5xxHeader(1);
1244         for ( uint8_t   i = 0; i < 4; i++)
1245                 T55xxReadBlock(i, 1, usepwd, override, password);
1246
1247         return 1;
1248 }
1249
1250 int AquireData( uint8_t page, uint8_t block, bool pwdmode, uint32_t password ){
1251         // arg0 bitmodes:
1252         // bit0 = pwdmode
1253         // bit1 = page to read from
1254         uint8_t arg0 = (page<<1) | pwdmode;
1255         UsbCommand c = {CMD_T55XX_READ_BLOCK, {arg0, block, password}};
1256
1257         clearCommandBuffer();
1258         SendCommand(&c);
1259         if ( !WaitForResponseTimeout(CMD_ACK,NULL,2500) ) {
1260                 PrintAndLog("command execution time out");
1261                 return 0;
1262         }
1263
1264         uint8_t got[12000];
1265         GetFromBigBuf(got,sizeof(got),0);
1266         WaitForResponse(CMD_ACK,NULL);
1267         setGraphBuf(got, sizeof(got));
1268         return 1;
1269 }
1270
1271 char * GetBitRateStr(uint32_t id){
1272         static char buf[25];
1273
1274         char *retStr = buf;
1275                 switch (id){
1276                 case 0:   snprintf(retStr,sizeof(buf),"%d - RF/8",id);   break;
1277                 case 1:   snprintf(retStr,sizeof(buf),"%d - RF/16",id);  break;
1278                 case 2:   snprintf(retStr,sizeof(buf),"%d - RF/32",id);  break;
1279                 case 3:   snprintf(retStr,sizeof(buf),"%d - RF/40",id);  break;
1280                 case 4:   snprintf(retStr,sizeof(buf),"%d - RF/50",id);  break;
1281                 case 5:   snprintf(retStr,sizeof(buf),"%d - RF/64",id);  break;
1282                 case 6:   snprintf(retStr,sizeof(buf),"%d - RF/100",id); break;
1283                 case 7:   snprintf(retStr,sizeof(buf),"%d - RF/128",id); break;
1284                 default:  snprintf(retStr,sizeof(buf),"%d - (Unknown)",id); break;
1285                 }
1286         return buf;
1287 }
1288
1289 char * GetSaferStr(uint32_t id){
1290         static char buf[40];
1291         char *retStr = buf;
1292
1293         snprintf(retStr,sizeof(buf),"%d",id);
1294         if (id == 6) {
1295                 snprintf(retStr,sizeof(buf),"%d - passwd",id);
1296         }
1297         if (id == 9 ){
1298                 snprintf(retStr,sizeof(buf),"%d - testmode",id);
1299         }
1300
1301         return buf;
1302 }
1303
1304 char * GetModulationStr( uint32_t id){
1305         static char buf[60];
1306         char *retStr = buf;
1307
1308         switch (id){
1309                 case 0: snprintf(retStr,sizeof(buf),"%d - DIRECT (ASK/NRZ)",id); break;
1310                 case 1: snprintf(retStr,sizeof(buf),"%d - PSK 1 phase change when input changes",id); break;
1311                 case 2: snprintf(retStr,sizeof(buf),"%d - PSK 2 phase change on bitclk if input high",id); break;
1312                 case 3: snprintf(retStr,sizeof(buf),"%d - PSK 3 phase change on rising edge of input",id); break;
1313                 case 4: snprintf(retStr,sizeof(buf),"%d - FSK 1 RF/8  RF/5",id); break;
1314                 case 5: snprintf(retStr,sizeof(buf),"%d - FSK 2 RF/8  RF/10",id); break;
1315                 case 6: snprintf(retStr,sizeof(buf),"%d - FSK 1a RF/5  RF/8",id); break;
1316                 case 7: snprintf(retStr,sizeof(buf),"%d - FSK 2a RF/10  RF/8",id); break;
1317                 case 8: snprintf(retStr,sizeof(buf),"%d - Manchester",id); break;
1318                 case 16: snprintf(retStr,sizeof(buf),"%d - Biphase",id); break;
1319                 case 0x18:snprintf(retStr,sizeof(buf),"%d - Biphase a - AKA Conditional Dephase Encoding(CDP)",id); break;
1320                 case 17: snprintf(retStr,sizeof(buf),"%d - Reserved",id); break;
1321                 default: snprintf(retStr,sizeof(buf),"0x%02X (Unknown)",id); break;
1322                 }
1323         return buf;
1324 }
1325
1326 char * GetModelStrFromCID(uint32_t cid){
1327
1328         static char buf[10];
1329         char *retStr = buf;
1330
1331         if (cid == 1) snprintf(retStr, sizeof(buf),"ATA5577M1");
1332         if (cid == 2) snprintf(retStr, sizeof(buf),"ATA5577M2");
1333         return buf;
1334 }
1335
1336 char * GetSelectedModulationStr( uint8_t id){
1337
1338         static char buf[20];
1339         char *retStr = buf;
1340
1341         switch (id){
1342                 case DEMOD_FSK: snprintf(retStr,sizeof(buf),"FSK");     break;
1343                 case DEMOD_FSK1: snprintf(retStr,sizeof(buf),"FSK1"); break;
1344                 case DEMOD_FSK1a: snprintf(retStr,sizeof(buf),"FSK1a"); break;
1345                 case DEMOD_FSK2: snprintf(retStr,sizeof(buf),"FSK2"); break;
1346                 case DEMOD_FSK2a: snprintf(retStr,sizeof(buf),"FSK2a"); break;
1347                 case DEMOD_ASK: snprintf(retStr,sizeof(buf),"ASK"); break;
1348                 case DEMOD_NRZ: snprintf(retStr,sizeof(buf),"DIRECT/NRZ"); break;
1349                 case DEMOD_PSK1: snprintf(retStr,sizeof(buf),"PSK1"); break;
1350                 case DEMOD_PSK2: snprintf(retStr,sizeof(buf),"PSK2"); break;
1351                 case DEMOD_PSK3: snprintf(retStr,sizeof(buf),"PSK3"); break;
1352                 case DEMOD_BI: snprintf(retStr,sizeof(buf),"BIPHASE"); break;
1353                 case DEMOD_BIa: snprintf(retStr,sizeof(buf),"BIPHASEa - (CDP)"); break;
1354                 default: snprintf(retStr,sizeof(buf),"(Unknown)"); break;
1355                 }
1356         return buf;
1357 }
1358
1359 void t55x7_create_config_block( int tagtype ){
1360
1361         /*
1362      T55X7_DEFAULT_CONFIG_BLOCK, T55X7_RAW_CONFIG_BLOCK
1363      T55X7_EM_UNIQUE_CONFIG_BLOCK, T55X7_FDXB_CONFIG_BLOCK,
1364          T55X7_FDXB_CONFIG_BLOCK, T55X7_HID_26_CONFIG_BLOCK, T55X7_INDALA_64_CONFIG_BLOCK, T55X7_INDALA_224_CONFIG_BLOCK
1365          T55X7_GUARDPROXII_CONFIG_BLOCK, T55X7_VIKING_CONFIG_BLOCK,     T55X7_NORALYS_CONFIG_BLOCK, T55X7_IOPROX_CONFIG_BLOCK
1366         */
1367         static char buf[60];
1368         char *retStr = buf;
1369
1370         switch (tagtype){
1371                 case 0: snprintf(retStr, sizeof(buf),"%08X - T55X7 Default", T55X7_DEFAULT_CONFIG_BLOCK); break;
1372                 case 1: snprintf(retStr, sizeof(buf),"%08X - T55X7 Raw", T55X7_RAW_CONFIG_BLOCK); break;
1373                 case 2: snprintf(retStr, sizeof(buf),"%08X - T5555 Q5 Default", T5555_DEFAULT_CONFIG_BLOCK); break;
1374                 default:
1375                         break;
1376         }
1377         PrintAndLog(buf);
1378 }
1379
1380 int CmdResetRead(const char *Cmd) {
1381         UsbCommand c = {CMD_T55XX_RESET_READ, {0,0,0}};
1382
1383         clearCommandBuffer();
1384         SendCommand(&c);
1385         if ( !WaitForResponseTimeout(CMD_ACK,NULL,2500) ) {
1386                 PrintAndLog("command execution time out");
1387                 return 0;
1388         }
1389
1390         uint8_t got[BIGBUF_SIZE-1];
1391         GetFromBigBuf(got,sizeof(got),0);
1392         WaitForResponse(CMD_ACK,NULL);
1393         setGraphBuf(got, sizeof(got));
1394         return 1;
1395 }
1396 // ADD T5555 (Q5) Default config block
1397 int CmdT55xxWipe(const char *Cmd) {
1398         char writeData[20] = {0};
1399         char *ptrData = writeData;
1400         char cmdp = param_getchar(Cmd, 0);
1401         if ( cmdp == 'h' || cmdp == 'H') return usage_t55xx_wipe();
1402
1403         bool Q5 = (cmdp == 'q' || cmdp == 'Q');
1404
1405         // Try with the default password to reset block 0
1406         // With a pwd should work even if pwd bit not set
1407         PrintAndLog("\nBeginning Wipe of a T55xx tag (assuming the tag is not password protected)\n");
1408
1409         if ( Q5 ){
1410                 snprintf(ptrData,sizeof(writeData),"b 0 d 6001F004 p 0");
1411         } else {
1412                 snprintf(ptrData,sizeof(writeData),"b 0 d 000880E0 p 0");
1413         }
1414
1415         if (!CmdT55xxWriteBlock(ptrData)) PrintAndLog("Error writing blk 0");
1416
1417         for (uint8_t blk = 1; blk<8; blk++) {
1418
1419                 snprintf(ptrData,sizeof(writeData),"b %d d 0", blk);
1420
1421                 if (!CmdT55xxWriteBlock(ptrData)) PrintAndLog("Error writing blk %d", blk);
1422
1423                 memset(writeData,0x00, sizeof(writeData));
1424         }
1425         return 0;
1426 }
1427
1428 int CmdT55xxBruteForce(const char *Cmd) {
1429
1430         // load a default pwd file.
1431         char buf[9];
1432         char filename[FILE_PATH_SIZE]={0};
1433         int     keycnt = 0;
1434         int ch;
1435         uint8_t stKeyBlock = 20;
1436         uint8_t *keyBlock = NULL, *p = NULL;
1437     uint32_t start_password = 0x00000000; //start password
1438     uint32_t end_password   = 0xFFFFFFFF; //end   password
1439     bool found = false;
1440
1441     char cmdp = param_getchar(Cmd, 0);
1442         if (cmdp == 'h' || cmdp == 'H') return usage_t55xx_bruteforce();
1443
1444         keyBlock = calloc(stKeyBlock, 6);
1445         if (keyBlock == NULL) return 1;
1446
1447         if (cmdp == 'i' || cmdp == 'I') {
1448
1449                 int len = strlen(Cmd+2);
1450                 if (len > FILE_PATH_SIZE) len = FILE_PATH_SIZE;
1451                 memcpy(filename, Cmd+2, len);
1452
1453                 FILE * f = fopen( filename , "r");
1454
1455                 if ( !f ) {
1456                         PrintAndLog("File: %s: not found or locked.", filename);
1457                         free(keyBlock);
1458                         return 1;
1459                 }
1460
1461                 while( fgets(buf, sizeof(buf), f) ){
1462                         if (strlen(buf) < 8 || buf[7] == '\n') continue;
1463
1464                         while (fgetc(f) != '\n' && !feof(f)) ;  //goto next line
1465
1466                         //The line start with # is comment, skip
1467                         if( buf[0]=='#' ) continue;
1468
1469                         if (!isxdigit(buf[0])){
1470                                 PrintAndLog("File content error. '%s' must include 8 HEX symbols", buf);
1471                                 continue;
1472                         }
1473
1474                         buf[8] = 0;
1475
1476                         if ( stKeyBlock - keycnt < 2) {
1477                                 p = realloc(keyBlock, 6*(stKeyBlock+=10));
1478                                 if (!p) {
1479                                         PrintAndLog("Cannot allocate memory for defaultKeys");
1480                                         free(keyBlock);
1481                                         fclose(f);
1482                                         return 2;
1483                                 }
1484                                 keyBlock = p;
1485                         }
1486                         memset(keyBlock + 4 * keycnt, 0, 4);
1487                         num_to_bytes(strtoll(buf, NULL, 16), 4, keyBlock + 4*keycnt);
1488                         PrintAndLog("chk custom pwd[%2d] %08X", keycnt, bytes_to_num(keyBlock + 4*keycnt, 4));
1489                         keycnt++;
1490                         memset(buf, 0, sizeof(buf));
1491                 }
1492                 fclose(f);
1493
1494                 if (keycnt == 0) {
1495                         PrintAndLog("No keys found in file");
1496                         free(keyBlock);
1497                         return 1;
1498                 }
1499                 PrintAndLog("Loaded %d keys", keycnt);
1500
1501                 // loop
1502                 uint64_t testpwd = 0x00;
1503                 for (uint16_t c = 0; c < keycnt; ++c ) {
1504
1505                         if (ukbhit()) {
1506                                 ch = getchar();
1507                                 (void)ch;
1508                                 printf("\naborted via keyboard!\n");
1509                                 free(keyBlock);
1510                                 return 0;
1511                         }
1512
1513                         testpwd = bytes_to_num(keyBlock + 4*c, 4);
1514
1515                         PrintAndLog("Testing %08X", testpwd);
1516
1517
1518                         if ( !AquireData(T55x7_PAGE0, T55x7_CONFIGURATION_BLOCK, TRUE, testpwd)) {
1519                                 PrintAndLog("Aquireing data from device failed. Quitting");
1520                                 free(keyBlock);
1521                                 return 0;
1522                         }
1523
1524                         found = tryDetectModulation();
1525
1526                         if ( found ) {
1527                                 PrintAndLog("Found valid password: [%08X]", testpwd);
1528                                 free(keyBlock);
1529                                 return 0;
1530                         }
1531                 }
1532                 PrintAndLog("Password NOT found.");
1533                 free(keyBlock);
1534                 return 0;
1535         }
1536
1537         // Try to read Block 7, first :)
1538
1539         // incremental pwd range search
1540     start_password = param_get32ex(Cmd, 0, 0, 16);
1541         end_password = param_get32ex(Cmd, 1, 0, 16);
1542
1543         if ( start_password >= end_password ) {
1544                 free(keyBlock);
1545                 return usage_t55xx_bruteforce();
1546         }
1547
1548     PrintAndLog("Search password range [%08X -> %08X]", start_password, end_password);
1549
1550     uint32_t i = start_password;
1551
1552     while ((!found) && (i <= end_password)){
1553
1554                 printf(".");
1555                 fflush(stdout);
1556                 if (ukbhit()) {
1557                         ch = getchar();
1558                         (void)ch;
1559                         printf("\naborted via keyboard!\n");
1560                         free(keyBlock);
1561                         return 0;
1562                 }
1563
1564                 if (!AquireData(T55x7_PAGE0, T55x7_CONFIGURATION_BLOCK, TRUE, i)) {
1565                         PrintAndLog("Aquireing data from device failed. Quitting");
1566                         free(keyBlock);
1567                         return 0;
1568                 }
1569                 found = tryDetectModulation();
1570
1571                 if (found) break;
1572                 i++;
1573     }
1574
1575     PrintAndLog("");
1576
1577     if (found)
1578                 PrintAndLog("Found valid password: [%08x]", i);
1579     else
1580                 PrintAndLog("Password NOT found. Last tried: [%08x]", --i);
1581
1582         free(keyBlock);
1583     return 0;
1584 }
1585
1586 int tryOnePassword(uint32_t password)
1587 {
1588         PrintAndLog("Trying password %08x", password);
1589         if (!AquireData(T55x7_PAGE0, T55x7_CONFIGURATION_BLOCK, TRUE, password)) {
1590                 PrintAndLog("Aquireing data from device failed. Quitting");
1591                 return -1;
1592         }
1593
1594         if (tryDetectModulation())
1595                 return 1;
1596         else return 0;
1597 }
1598
1599 int CmdT55xxRecoverPW(const char *Cmd) {
1600         int bit = 0;
1601         uint32_t orig_password = 0x0;
1602         uint32_t curr_password = 0x0;
1603         uint32_t prev_password = 0xffffffff;
1604         uint32_t mask = 0x0;
1605         int found = 0;
1606
1607         char cmdp = param_getchar(Cmd, 0);
1608         if (cmdp == 'h' || cmdp == 'H') return usage_t55xx_recoverpw();
1609
1610         orig_password = param_get32ex(Cmd, 0, 0x51243648, 16); //password used by handheld cloners
1611
1612         // first try fliping each bit in the expected password
1613         while ((found != 1) && (bit < 32)) {
1614                 curr_password = orig_password ^ ( 1 << bit );
1615                 found = tryOnePassword(curr_password);
1616                 if (found == 1)
1617                         goto done;
1618                 else if (found == -1)
1619                         return 0;
1620                 bit++;
1621         }
1622
1623         // now try to use partial original password, since block 7 should have been completely
1624         // erased during the write sequence and it is possible that only partial password has been
1625         // written
1626         // not sure from which end the bit bits are written, so try from both ends
1627         // from low bit to high bit
1628         bit = 0;
1629         while ((found != 1) && (bit < 32)) {
1630                 mask += ( 1 << bit );
1631                 curr_password = orig_password & mask;
1632                 // if updated mask didn't change the password, don't try it again
1633                 if (prev_password == curr_password) {
1634                         bit++;
1635                         continue;
1636                 }
1637                 found = tryOnePassword(curr_password);
1638                 if (found == 1)
1639                         goto done;
1640                 else if (found == -1)
1641                         return 0;
1642                 bit++;
1643                 prev_password=curr_password;
1644         }
1645
1646         // from high bit to low
1647         bit = 0;
1648         mask = 0xffffffff;
1649         while ((found != 1) && (bit < 32)) {
1650                 mask -= ( 1 << bit );
1651                 curr_password = orig_password & mask;
1652                 // if updated mask didn't change the password, don't try it again
1653                 if (prev_password == curr_password) {
1654                         bit++;
1655                         continue;
1656                 }
1657                 found = tryOnePassword(curr_password);
1658                 if (found == 1)
1659                         goto done;
1660                 else if (found == -1)
1661                         return 0;
1662                 bit++;
1663                 prev_password=curr_password;
1664         }
1665 done:
1666         PrintAndLog("");
1667
1668         if (found == 1)
1669                 PrintAndLog("Found valid password: [%08x]", curr_password);
1670         else
1671                 PrintAndLog("Password NOT found.");
1672
1673         return 0;
1674 }
1675
1676 static command_t CommandTable[] = {
1677         {"help",                CmdHelp,           1, "This help"},
1678         {"bruteforce",  CmdT55xxBruteForce,0, "<start password> <end password> [i <*.dic>] Simple bruteforce attack to find password"},
1679         {"config",              CmdT55xxSetConfig, 1, "Set/Get T55XX configuration (modulation, inverted, offset, rate)"},
1680         {"detect",              CmdT55xxDetect,    1, "[1] Try detecting the tag modulation from reading the configuration block."},
1681         {"dump",                CmdT55xxDump,      0, "[password] [o] Dump T55xx card block 0-7. Optional [password], [override]"},
1682         {"info",                CmdT55xxInfo,      1, "[1] Show T55x7 configuration data (page 0/ blk 0)"},
1683         {"read",                CmdT55xxReadBlock, 0, "b <block> p [password] [o] [1] -- Read T55xx block data. Optional [p password], [override], [page1]"},
1684         {"resetread",   CmdResetRead,      0, "Send Reset Cmd then lf read the stream to attempt to identify the start of it (needs a demod and/or plot after)"},
1685         {"recoverpw",   CmdT55xxRecoverPW, 0, "[password] Try to recover from bad password write from a cloner. Only use on PW protected chips!"},
1686         {"special",             special,           0, "Show block changes with 64 different offsets"},
1687         {"trace",               CmdT55xxReadTrace, 1, "[1] Show T55x7 traceability data (page 1/ blk 0-1)"},
1688         {"wakeup",              CmdT55xxWakeUp,    0, "Send AOR wakeup command"},
1689         {"wipe",                CmdT55xxWipe,      0, "[q] Wipe a T55xx tag and set defaults (will destroy any data on tag)"},
1690         {"write",               CmdT55xxWriteBlock,0, "b <block> d <data> p [password] [1] -- Write T55xx block data. Optional [p password], [page1]"},
1691         {NULL, NULL, 0, NULL}
1692 };
1693
1694 int CmdLFT55XX(const char *Cmd) {
1695         clearCommandBuffer();
1696         CmdsParse(CommandTable, Cmd);
1697         return 0;
1698 }
1699
1700 int CmdHelp(const char *Cmd) {
1701         CmdsHelp(CommandTable);
1702         return 0;
1703 }