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("     [graph buffer data]  - 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("     [graph buffer data]  - 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 <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
 460 int CmdT55xxDetect(const char *Cmd){
 461         bool errors = FALSE;
 462         bool useGB = FALSE;
 463         bool usepwd = FALSE;
 464         uint32_t password = 0;
 465         uint8_t cmdp = 0;
 466
 467         while(param_getchar(Cmd, cmdp) != 0x00 && !errors) {
 468                 switch(param_getchar(Cmd, cmdp)) {
 469                 case 'h':
 470                 case 'H':
 471                         return usage_t55xx_detect();
 472                 case 'p':
 473                 case 'P':
 474                         password = param_get32ex(Cmd, cmdp+1, 0, 16);
 475                         usepwd = TRUE;
 476                         cmdp += 2;
 477                         break;
 478                 case '1':
 479                         // use Graphbuffer data
 480                         useGB = TRUE;
 481                         cmdp++;
 482                         break;
 483                 default:
 484                         PrintAndLog("Unknown parameter '%c'", param_getchar(Cmd, cmdp));
 485                         errors = true;
 486                         break;
 487                 }
 488         }
 489         if (errors) return usage_t55xx_detect();
 490
 491         if ( !useGB) {
 492                 if ( !AquireData(T55x7_PAGE0, T55x7_CONFIGURATION_BLOCK, usepwd, password) )
 493                         return 0;
 494         }
 495
 496         if ( !tryDetectModulation() )
 497                 PrintAndLog("Could not detect modulation automatically. Try setting it manually with \'lf t55xx config\'");
 498
 499         return 1;
 500 }
 501
 502 // detect configuration?
 503 bool tryDetectModulation(){
 504         uint8_t hits = 0;
 505         t55xx_conf_block_t tests[15];
 506         int bitRate=0;
 507         uint8_t fc1 = 0, fc2 = 0, clk=0;
 508
 509         if (GetFskClock("", FALSE, FALSE)){
 510                 fskClocks(&fc1, &fc2, &clk, FALSE);
 511                 if ( FSKrawDemod("0 0", FALSE) && test(DEMOD_FSK, &tests[hits].offset, &bitRate, clk, &tests[hits].Q5)){
 512                         tests[hits].modulation = DEMOD_FSK;
 513                         if (fc1==8 && fc2 == 5)
 514                                 tests[hits].modulation = DEMOD_FSK1a;
 515                         else if (fc1==10 && fc2 == 8)
 516                                 tests[hits].modulation = DEMOD_FSK2;
 517                         tests[hits].bitrate = bitRate;
 518                         tests[hits].inverted = FALSE;
 519                         tests[hits].block0 = PackBits(tests[hits].offset, 32, DemodBuffer);
 520                         tests[hits].ST = FALSE;
 521                         ++hits;
 522                 }
 523                 if ( FSKrawDemod("0 1", FALSE) && test(DEMOD_FSK, &tests[hits].offset, &bitRate, clk, &tests[hits].Q5)) {
 524                         tests[hits].modulation = DEMOD_FSK;
 525                         if (fc1 == 8 && fc2 == 5)
 526                                 tests[hits].modulation = DEMOD_FSK1;
 527                         else if (fc1 == 10 && fc2 == 8)
 528                                 tests[hits].modulation = DEMOD_FSK2a;
 529                         tests[hits].bitrate = bitRate;
 530                         tests[hits].inverted = TRUE;
 531                         tests[hits].block0 = PackBits(tests[hits].offset, 32, DemodBuffer);
 532                         tests[hits].ST = FALSE;
 533                         ++hits;
 534                 }
 535         } else {
 536                 clk = GetAskClock("", FALSE, FALSE);
 537                 if (clk>0) {
 538                         tests[hits].ST = TRUE;
 539                         if ( ASKDemod_ext("0 0 1", FALSE, FALSE, 1, &tests[hits].ST) && test(DEMOD_ASK, &tests[hits].offset, &bitRate, clk, &tests[hits].Q5)) {
 540                                 tests[hits].modulation = DEMOD_ASK;
 541                                 tests[hits].bitrate = bitRate;
 542                                 tests[hits].inverted = FALSE;
 543                                 tests[hits].block0 = PackBits(tests[hits].offset, 32, DemodBuffer);
 544                                 ++hits;
 545                         }
 546                         tests[hits].ST = TRUE;
 547                         if ( ASKDemod_ext("0 1 1", FALSE, FALSE, 1, &tests[hits].ST)  && test(DEMOD_ASK, &tests[hits].offset, &bitRate, clk, &tests[hits].Q5)) {
 548                                 tests[hits].modulation = DEMOD_ASK;
 549                                 tests[hits].bitrate = bitRate;
 550                                 tests[hits].inverted = TRUE;
 551                                 tests[hits].block0 = PackBits(tests[hits].offset, 32, DemodBuffer);
 552                                 ++hits;
 553                         }
 554                         if ( ASKbiphaseDemod("0 0 0 2", FALSE) && test(DEMOD_BI, &tests[hits].offset, &bitRate, clk, &tests[hits].Q5) ) {
 555                                 tests[hits].modulation = DEMOD_BI;
 556                                 tests[hits].bitrate = bitRate;
 557                                 tests[hits].inverted = FALSE;
 558                                 tests[hits].block0 = PackBits(tests[hits].offset, 32, DemodBuffer);
 559                                 tests[hits].ST = FALSE;
 560                                 ++hits;
 561                         }
 562                         if ( ASKbiphaseDemod("0 0 1 2", FALSE) && test(DEMOD_BIa, &tests[hits].offset, &bitRate, clk, &tests[hits].Q5) ) {
 563                                 tests[hits].modulation = DEMOD_BIa;
 564                                 tests[hits].bitrate = bitRate;
 565                                 tests[hits].inverted = TRUE;
 566                                 tests[hits].block0 = PackBits(tests[hits].offset, 32, DemodBuffer);
 567                                 tests[hits].ST = FALSE;
 568                                 ++hits;
 569                         }
 570                 }
 571                 //undo trim from ask
 572                 //save_restoreGB(0);
 573                 clk = GetNrzClock("", FALSE, FALSE);
 574                 if (clk>0) {
 575                         if ( NRZrawDemod("0 0 1", FALSE)  && test(DEMOD_NRZ, &tests[hits].offset, &bitRate, clk, &tests[hits].Q5)) {
 576                                 tests[hits].modulation = DEMOD_NRZ;
 577                                 tests[hits].bitrate = bitRate;
 578                                 tests[hits].inverted = FALSE;
 579                                 tests[hits].block0 = PackBits(tests[hits].offset, 32, DemodBuffer);
 580                                 tests[hits].ST = FALSE;
 581                                 ++hits;
 582                         }
 583
 584                         if ( NRZrawDemod("0 1 1", FALSE)  && test(DEMOD_NRZ, &tests[hits].offset, &bitRate, clk, &tests[hits].Q5)) {
 585                                 tests[hits].modulation = DEMOD_NRZ;
 586                                 tests[hits].bitrate = bitRate;
 587                                 tests[hits].inverted = TRUE;
 588                                 tests[hits].block0 = PackBits(tests[hits].offset, 32, DemodBuffer);
 589                                 tests[hits].ST = FALSE;
 590                                 ++hits;
 591                         }
 592                 }
 593
 594                 // allow undo
 595                 // skip first 160 samples to allow antenna to settle in (psk gets inverted occasionally otherwise)
 596                 save_restoreGB(1);
 597                 CmdLtrim("160");
 598                 clk = GetPskClock("", FALSE, FALSE);
 599                 if (clk>0) {
 600                         if ( PSKDemod("0 0 6", FALSE) && test(DEMOD_PSK1, &tests[hits].offset, &bitRate, clk, &tests[hits].Q5)) {
 601                                 tests[hits].modulation = DEMOD_PSK1;
 602                                 tests[hits].bitrate = bitRate;
 603                                 tests[hits].inverted = FALSE;
 604                                 tests[hits].block0 = PackBits(tests[hits].offset, 32, DemodBuffer);
 605                                 tests[hits].ST = FALSE;
 606                                 ++hits;
 607                         }
 608                         if ( PSKDemod("0 1 6", FALSE) && test(DEMOD_PSK1, &tests[hits].offset, &bitRate, clk, &tests[hits].Q5)) {
 609                                 tests[hits].modulation = DEMOD_PSK1;
 610                                 tests[hits].bitrate = bitRate;
 611                                 tests[hits].inverted = TRUE;
 612                                 tests[hits].block0 = PackBits(tests[hits].offset, 32, DemodBuffer);
 613                                 tests[hits].ST = FALSE;
 614                                 ++hits;
 615                         }
 616                         // PSK2 - needs a call to psk1TOpsk2.
 617                         if ( PSKDemod("0 0 6", FALSE)) {
 618                                 psk1TOpsk2(DemodBuffer, DemodBufferLen);
 619                                 if (test(DEMOD_PSK2, &tests[hits].offset, &bitRate, clk, &tests[hits].Q5)){
 620                                         tests[hits].modulation = DEMOD_PSK2;
 621                                         tests[hits].bitrate = bitRate;
 622                                         tests[hits].inverted = FALSE;
 623                                         tests[hits].block0 = PackBits(tests[hits].offset, 32, DemodBuffer);
 624                                         tests[hits].ST = FALSE;
 625                                         ++hits;
 626                                 }
 627                         } // inverse waves does not affect this demod
 628                         // PSK3 - needs a call to psk1TOpsk2.
 629                         if ( PSKDemod("0 0 6", FALSE)) {
 630                                 psk1TOpsk2(DemodBuffer, DemodBufferLen);
 631                                 if (test(DEMOD_PSK3, &tests[hits].offset, &bitRate, clk, &tests[hits].Q5)){
 632                                         tests[hits].modulation = DEMOD_PSK3;
 633                                         tests[hits].bitrate = bitRate;
 634                                         tests[hits].inverted = FALSE;
 635                                         tests[hits].block0 = PackBits(tests[hits].offset, 32, DemodBuffer);
 636                                         tests[hits].ST = FALSE;
 637                                         ++hits;
 638                                 }
 639                         } // inverse waves does not affect this demod
 640                 }
 641                 //undo trim samples
 642                 save_restoreGB(0);
 643         }
 644         if ( hits == 1) {
 645                 config.modulation = tests[0].modulation;
 646                 config.bitrate = tests[0].bitrate;
 647                 config.inverted = tests[0].inverted;
 648                 config.offset = tests[0].offset;
 649                 config.block0 = tests[0].block0;
 650                 config.Q5 = tests[0].Q5;
 651                 config.ST = tests[0].ST;
 652                 printConfiguration( config );
 653                 return TRUE;
 654         }
 655
 656         if ( hits > 1) {
 657                 PrintAndLog("Found [%d] possible matches for modulation.",hits);
 658                 for(int i=0; i<hits; ++i){
 659                         PrintAndLog("--[%d]---------------", i+1);
 660                         printConfiguration( tests[i] );
 661                 }
 662         }
 663         return FALSE;
 664 }
 665
 666 bool testModulation(uint8_t mode, uint8_t modread){
 667         switch( mode ){
 668                 case DEMOD_FSK:
 669                         if (modread >= DEMOD_FSK1 && modread <= DEMOD_FSK2a) return TRUE;
 670                         break;
 671                 case DEMOD_ASK:
 672                         if (modread == DEMOD_ASK) return TRUE;
 673                         break;
 674                 case DEMOD_PSK1:
 675                         if (modread == DEMOD_PSK1) return TRUE;
 676                         break;
 677                 case DEMOD_PSK2:
 678                         if (modread == DEMOD_PSK2) return TRUE;
 679                         break;
 680                 case DEMOD_PSK3:
 681                         if (modread == DEMOD_PSK3) return TRUE;
 682                         break;
 683                 case DEMOD_NRZ:
 684                         if (modread == DEMOD_NRZ) return TRUE;
 685                         break;
 686                 case DEMOD_BI:
 687                         if (modread == DEMOD_BI) return TRUE;
 688                         break;
 689                 case DEMOD_BIa:
 690                         if (modread == DEMOD_BIa) return TRUE;
 691                         break;
 692                 default:
 693                         return FALSE;
 694         }
 695         return FALSE;
 696 }
 697
 698 bool testQ5Modulation(uint8_t   mode, uint8_t   modread){
 699         switch( mode ){
 700                 case DEMOD_FSK:
 701                         if (modread >= 4 && modread <= 5) return TRUE;
 702                         break;
 703                 case DEMOD_ASK:
 704                         if (modread == 0) return TRUE;
 705                         break;
 706                 case DEMOD_PSK1:
 707                         if (modread == 1) return TRUE;
 708                         break;
 709                 case DEMOD_PSK2:
 710                         if (modread == 2) return TRUE;
 711                         break;
 712                 case DEMOD_PSK3:
 713                         if (modread == 3) return TRUE;
 714                         break;
 715                 case DEMOD_NRZ:
 716                         if (modread == 7) return TRUE;
 717                         break;
 718                 case DEMOD_BI:
 719                         if (modread == 6) return TRUE;
 720                         break;
 721                 default:
 722                         return FALSE;
 723         }
 724         return FALSE;
 725 }
 726
 727 int convertQ5bitRate(uint8_t bitRateRead) {
 728         uint8_t expected[] = {8, 16, 32, 40, 50, 64, 100, 128};
 729         for (int i=0; i<8; i++)
 730                 if (expected[i] == bitRateRead)
 731                         return i;
 732
 733         return -1;
 734 }
 735
 736 bool testQ5(uint8_t mode, uint8_t *offset, int *fndBitRate, uint8_t     clk){
 737
 738         if ( DemodBufferLen < 64 ) return FALSE;
 739         uint8_t si = 0;
 740         for (uint8_t idx = 28; idx < 64; idx++){
 741                 si = idx;
 742                 if ( PackBits(si, 28, DemodBuffer) == 0x00 ) continue;
 743
 744                 uint8_t safer     = PackBits(si, 4, DemodBuffer); si += 4;     //master key
 745                 uint8_t resv      = PackBits(si, 8, DemodBuffer); si += 8;
 746                 // 2nibble must be zeroed.
 747                 if (safer != 0x6 && safer != 0x9) continue;
 748                 if ( resv > 0x00) continue;
 749                 //uint8_t       pageSel   = PackBits(si, 1, DemodBuffer); si += 1;
 750                 //uint8_t fastWrite = PackBits(si, 1, DemodBuffer); si += 1;
 751                 si += 1+1;
 752                 int bitRate       = PackBits(si, 6, DemodBuffer)*2 + 2; si += 6;     //bit rate
 753                 if (bitRate > 128 || bitRate < 8) continue;
 754
 755                 //uint8_t AOR       = PackBits(si, 1, DemodBuffer); si += 1;
 756                 //uint8_t PWD       = PackBits(si, 1, DemodBuffer); si += 1;
 757                 //uint8_t pskcr     = PackBits(si, 2, DemodBuffer); si += 2;  //could check psk cr
 758                 //uint8_t inverse   = PackBits(si, 1, DemodBuffer); si += 1;
 759                 si += 1+1+2+1;
 760                 uint8_t modread   = PackBits(si, 3, DemodBuffer); si += 3;
 761                 uint8_t maxBlk    = PackBits(si, 3, DemodBuffer); si += 3;
 762                 //uint8_t ST        = PackBits(si, 1, DemodBuffer); si += 1;
 763                 if (maxBlk == 0) continue;
 764                 //test modulation
 765                 if (!testQ5Modulation(mode, modread)) continue;
 766                 if (bitRate != clk) continue;
 767                 *fndBitRate = convertQ5bitRate(bitRate);
 768                 if (*fndBitRate < 0) continue;
 769                 *offset = idx;
 770
 771                 return TRUE;
 772         }
 773         return FALSE;
 774 }
 775
 776 bool testBitRate(uint8_t readRate, uint8_t clk){
 777         uint8_t expected[] = {8, 16, 32, 40, 50, 64, 100, 128};
 778         if (expected[readRate] == clk)
 779                 return true;
 780
 781         return false;
 782 }
 783
 784 bool test(uint8_t mode, uint8_t *offset, int *fndBitRate, uint8_t clk, bool *Q5){
 785
 786         if ( DemodBufferLen < 64 ) return FALSE;
 787         uint8_t si = 0;
 788         for (uint8_t idx = 28; idx < 64; idx++){
 789                 si = idx;
 790                 if ( PackBits(si, 28, DemodBuffer) == 0x00 ) continue;
 791
 792                 uint8_t safer    = PackBits(si, 4, DemodBuffer); si += 4;     //master key
 793                 uint8_t resv     = PackBits(si, 4, DemodBuffer); si += 4;     //was 7 & +=7+3 //should be only 4 bits if extended mode
 794                 // 2nibble must be zeroed.
 795                 // moved test to here, since this gets most faults first.
 796                 if ( resv > 0x00) continue;
 797
 798                 uint8_t xtRate   = PackBits(si, 3, DemodBuffer); si += 3;     //extended mode part of rate
 799                 int bitRate  = PackBits(si, 3, DemodBuffer); si += 3;     //bit rate
 800                 if (bitRate > 7) continue;
 801                 uint8_t extend   = PackBits(si, 1, DemodBuffer); si += 1;     //bit 15 extended mode
 802                 uint8_t modread  = PackBits(si, 5, DemodBuffer); si += 5+2+1;
 803                 //uint8_t pskcr   = PackBits(si, 2, DemodBuffer); si += 2+1;  //could check psk cr
 804                 //uint8_t nml01    = PackBits(si, 1, DemodBuffer); si += 1+5;   //bit 24, 30, 31 could be tested for 0 if not extended mode
 805                 //uint8_t nml02    = PackBits(si, 2, DemodBuffer); si += 2;
 806
 807                 //if extended mode
 808                 bool extMode =( (safer == 0x6 || safer == 0x9) && extend) ? TRUE : FALSE;
 809
 810                 if (!extMode){
 811                         if (xtRate) continue;  //nml01 || nml02 ||  caused issues on noralys tags
 812                 }
 813                 //test modulation
 814                 if (!testModulation(mode, modread)) continue;
 815                 if (!testBitRate(bitRate, clk)) continue;
 816                 *fndBitRate = bitRate;
 817                 *offset = idx;
 818                 *Q5 = FALSE;
 819                 return TRUE;
 820         }
 821         if (testQ5(mode, offset, fndBitRate, clk)) {
 822                 *Q5 = TRUE;
 823                 return TRUE;
 824         }
 825         return FALSE;
 826 }
 827
 828 void printT55xxBlock(const char *blockNum){
 829
 830         uint8_t i = config.offset;
 831         uint8_t endpos = 32 + i;
 832         uint32_t blockData = 0;
 833         uint8_t bits[64] = {0x00};
 834
 835         if ( !DemodBufferLen) return;
 836
 837         if ( endpos > DemodBufferLen){
 838                 PrintAndLog("The configured offset %d is too big. Possible offset: %d)", i, DemodBufferLen-32);
 839                 return;
 840         }
 841
 842         for (; i < endpos; ++i)
 843                 bits[i - config.offset] = DemodBuffer[i];
 844
 845         blockData = PackBits(0, 32, bits);
 846
 847         PrintAndLog(" %s | %08X | %s", blockNum, blockData, sprint_bin(bits,32));
 848 }
 849
 850 int special(const char *Cmd) {
 851         uint32_t blockData = 0;
 852         uint8_t bits[32] = {0x00};
 853
 854         PrintAndLog("OFFSET | DATA  | BINARY");
 855         PrintAndLog("----------------------------------------------------");
 856         int i,j = 0;
 857         for (; j < 64; ++j){
 858
 859                 for (i = 0; i < 32; ++i)
 860                         bits[i]=DemodBuffer[j+i];
 861
 862                 blockData = PackBits(0, 32, bits);
 863
 864                 PrintAndLog("%02d | 0x%08X | %s",j , blockData, sprint_bin(bits,32));
 865         }
 866         return 0;
 867 }
 868
 869 int printConfiguration( t55xx_conf_block_t b){
 870         PrintAndLog("Chip Type  : %s", (b.Q5) ? "T5555(Q5)" : "T55x7");
 871         PrintAndLog("Modulation : %s", GetSelectedModulationStr(b.modulation) );
 872         PrintAndLog("Bit Rate   : %s", GetBitRateStr(b.bitrate) );
 873         PrintAndLog("Inverted   : %s", (b.inverted) ? "Yes" : "No" );
 874         PrintAndLog("Offset     : %d", b.offset);
 875         PrintAndLog("Seq. Term. : %s", (b.ST) ? "Yes" : "No" );
 876         PrintAndLog("Block0     : 0x%08X", b.block0);
 877         PrintAndLog("");
 878         return 0;
 879 }
 880
 881 int CmdT55xxWakeUp(const char *Cmd) {
 882         uint32_t password = 0;
 883         uint8_t cmdp = 0;
 884         bool errors = false;
 885         while(param_getchar(Cmd, cmdp) != 0x00 && !errors) {
 886                 switch(param_getchar(Cmd, cmdp)) {
 887                 case 'h':
 888                 case 'H':
 889                         return usage_t55xx_wakup();
 890                 case 'p':
 891                 case 'P':
 892                         password = param_get32ex(Cmd, cmdp+1, 0, 16);
 893                         cmdp += 2;
 894                         errors = false;
 895                         break;
 896                 default:
 897                         PrintAndLog("Unknown parameter '%c'", param_getchar(Cmd, cmdp));
 898                         errors = true;
 899                         break;
 900                 }
 901         }
 902         if (errors) return usage_t55xx_wakup();
 903
 904         UsbCommand c = {CMD_T55XX_WAKEUP, {password, 0, 0}};
 905         clearCommandBuffer();
 906         SendCommand(&c);
 907         PrintAndLog("Wake up command sent. Try read now");
 908         return 0;
 909 }
 910
 911 int CmdT55xxWriteBlock(const char *Cmd) {
 912         uint8_t block = 0xFF; //default to invalid block
 913         uint32_t data = 0; //default to blank Block
 914         uint32_t password = 0; //default to blank Block 7
 915         bool usepwd = false;
 916         bool page1 = false;
 917         bool gotdata = false;
 918         bool errors = false;
 919         uint8_t cmdp = 0;
 920         while(param_getchar(Cmd, cmdp) != 0x00 && !errors) {
 921                 switch(param_getchar(Cmd, cmdp)) {
 922                 case 'h':
 923                 case 'H':
 924                         return usage_t55xx_write();
 925                 case 'b':
 926                 case 'B':
 927                         errors |= param_getdec(Cmd, cmdp+1, &block);
 928                         cmdp += 2;
 929                         break;
 930                 case 'd':
 931                 case 'D':
 932                         data = param_get32ex(Cmd, cmdp+1, 0, 16);
 933                         gotdata = true;
 934                         cmdp += 2;
 935                         break;
 936                 case 'p':
 937                 case 'P':
 938                         password = param_get32ex(Cmd, cmdp+1, 0, 16);
 939                         usepwd = true;
 940                         cmdp += 2;
 941                         break;
 942                 case '1':
 943                         page1 = true;
 944                         cmdp++;
 945                         break;
 946                 default:
 947                         PrintAndLog("Unknown parameter '%c'", param_getchar(Cmd, cmdp));
 948                         errors = true;
 949                         break;
 950                 }
 951         }
 952         if (errors || !gotdata) return usage_t55xx_write();
 953
 954         if (block > 7) {
 955                 PrintAndLog("Block number must be between 0 and 7");
 956                 return 0;
 957         }
 958
 959         UsbCommand c = {CMD_T55XX_WRITE_BLOCK, {data, block, 0}};
 960         UsbCommand resp;
 961         c.d.asBytes[0] = (page1) ? 0x2 : 0;
 962
 963         char pwdStr[16] = {0};
 964         snprintf(pwdStr, sizeof(pwdStr), "pwd: 0x%08X", password);
 965
 966         PrintAndLog("Writing page %d  block: %02d  data: 0x%08X %s", page1, block, data,  (usepwd) ? pwdStr : "" );
 967
 968         //Password mode
 969         if (usepwd) {
 970                 c.arg[2] = password;
 971                 c.d.asBytes[0] |= 0x1;
 972         }
 973         clearCommandBuffer();
 974         SendCommand(&c);
 975         if (!WaitForResponseTimeout(CMD_ACK, &resp, 1000)){
 976                 PrintAndLog("Error occurred, device did not ACK write operation. (May be due to old firmware)");
 977                 return 0;
 978         }
 979         return 1;
 980 }
 981
 982 int CmdT55xxReadTrace(const char *Cmd) {
 983         char cmdp = param_getchar(Cmd, 0);
 984         bool pwdmode = false;
 985         uint32_t password = 0;
 986         if (strlen(Cmd) > 1 || cmdp == 'h' || cmdp == 'H') return usage_t55xx_trace();
 987
 988         if (strlen(Cmd)==0)
 989                 if ( !AquireData( T55x7_PAGE1, REGULAR_READ_MODE_BLOCK, pwdmode, password ) )
 990                         return 0;
 991
 992         if ( config.Q5 ){
 993                 if (!DecodeT5555TraceBlock()) return 0;
 994         } else {
 995                 if (!DecodeT55xxBlock()) return 0;
 996         }
 997
 998         if ( !DemodBufferLen ) return 0;
 999
1000         RepaintGraphWindow();
1001         uint8_t repeat = (config.offset > 5) ? 32 : 0;
1002
1003         uint8_t si = config.offset + repeat;
1004         uint32_t bl1 = PackBits(si, 32, DemodBuffer);
1005         uint32_t bl2 = PackBits(si+32, 32, DemodBuffer);
1006
1007         if (config.Q5) {
1008                 uint32_t hdr = PackBits(si, 9,  DemodBuffer); si += 9;
1009
1010                 if (hdr != 0x1FF) {
1011                   PrintAndLog("Invalid Q5 Trace data header (expected 0x1FF, found %X)", hdr);
1012                   return 0;
1013                 }
1014
1015                 t5555_tracedata_t data = {.bl1 = bl1, .bl2 = bl2, .icr = 0, .lotidc = '?', .lotid = 0, .wafer = 0, .dw =0};
1016
1017                 data.icr     = PackBits(si, 2,  DemodBuffer); si += 2;
1018                 data.lotidc  = 'Z' - PackBits(si, 2,  DemodBuffer); si += 3;
1019
1020                 data.lotid   = PackBits(si, 4,  DemodBuffer); si += 5;
1021                 data.lotid <<= 4;
1022                 data.lotid  |= PackBits(si, 4,  DemodBuffer); si += 5;
1023                 data.lotid <<= 4;
1024                 data.lotid  |= PackBits(si, 4,  DemodBuffer); si += 5;
1025                 data.lotid <<= 4;
1026                 data.lotid  |= PackBits(si, 4,  DemodBuffer); si += 5;
1027                 data.lotid <<= 1;
1028                 data.lotid  |= PackBits(si, 1,  DemodBuffer); si += 1;
1029
1030                 data.wafer   = PackBits(si, 3,  DemodBuffer); si += 4;
1031                 data.wafer <<= 2;
1032                 data.wafer  |= PackBits(si, 2,  DemodBuffer); si += 2;
1033
1034                 data.dw      = PackBits(si, 2,  DemodBuffer); si += 3;
1035                 data.dw    <<= 4;
1036                 data.dw     |= PackBits(si, 4,  DemodBuffer); si += 5;
1037                 data.dw    <<= 4;
1038                 data.dw     |= PackBits(si, 4,  DemodBuffer); si += 5;
1039                 data.dw    <<= 4;
1040                 data.dw     |= PackBits(si, 4,  DemodBuffer); si += 5;
1041
1042                 printT5555Trace(data, repeat);
1043
1044         } else {
1045
1046                 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};
1047
1048                 data.acl = PackBits(si, 8,  DemodBuffer); si += 8;
1049                 if ( data.acl != 0xE0 ) {
1050                         PrintAndLog("The modulation is most likely wrong since the ACL is not 0xE0. ");
1051                         return 0;
1052                 }
1053
1054                 data.mfc     = PackBits(si, 8,  DemodBuffer); si += 8;
1055                 data.cid     = PackBits(si, 5,  DemodBuffer); si += 5;
1056                 data.icr     = PackBits(si, 3,  DemodBuffer); si += 3;
1057                 data.year    = PackBits(si, 4,  DemodBuffer); si += 4;
1058                 data.quarter = PackBits(si, 2,  DemodBuffer); si += 2;
1059                 data.lotid   = PackBits(si, 14, DemodBuffer); si += 14;
1060                 data.wafer   = PackBits(si, 5,  DemodBuffer); si += 5;
1061                 data.dw      = PackBits(si, 15, DemodBuffer);
1062
1063                 time_t t = time(NULL);
1064                 struct tm tm = *localtime(&t);
1065                 if ( data.year > tm.tm_year-110)
1066                         data.year += 2000;
1067                 else
1068                         data.year += 2010;
1069
1070                 printT55x7Trace(data, repeat);
1071         }
1072         return 0;
1073 }
1074
1075 void printT55x7Trace( t55x7_tracedata_t data, uint8_t repeat ){
1076         PrintAndLog("-- T55x7 Trace Information ----------------------------------");
1077         PrintAndLog("-------------------------------------------------------------");
1078         PrintAndLog(" ACL Allocation class (ISO/IEC 15963-1)  : 0x%02X (%d)", data.acl, data.acl);
1079         PrintAndLog(" MFC Manufacturer ID (ISO/IEC 7816-6)    : 0x%02X (%d) - %s", data.mfc, data.mfc, getTagInfo(data.mfc));
1080         PrintAndLog(" CID                                     : 0x%02X (%d) - %s", data.cid, data.cid, GetModelStrFromCID(data.cid));
1081         PrintAndLog(" ICR IC Revision                         : %d", data.icr );
1082         PrintAndLog(" Manufactured");
1083         PrintAndLog("     Year/Quarter : %d/%d", data.year, data.quarter);
1084         PrintAndLog("     Lot ID       : %d", data.lotid );
1085         PrintAndLog("     Wafer number : %d", data.wafer);
1086         PrintAndLog("     Die Number   : %d", data.dw);
1087         PrintAndLog("-------------------------------------------------------------");
1088         PrintAndLog(" Raw Data - Page 1");
1089         PrintAndLog("     Block 1  : 0x%08X  %s", data.bl1, sprint_bin(DemodBuffer+config.offset+repeat,32) );
1090         PrintAndLog("     Block 2  : 0x%08X  %s", data.bl2, sprint_bin(DemodBuffer+config.offset+repeat+32,32) );
1091         PrintAndLog("-------------------------------------------------------------");
1092
1093         /*
1094         TRACE - BLOCK O
1095                 Bits    Definition                                                              HEX
1096                 1-8             ACL Allocation class (ISO/IEC 15963-1)  0xE0
1097                 9-16    MFC Manufacturer ID (ISO/IEC 7816-6)    0x15 Atmel Corporation
1098                 17-21   CID                                                                             0x1 = Atmel ATA5577M1  0x2 = Atmel ATA5577M2
1099                 22-24   ICR IC revision
1100                 25-28   YEAR (BCD encoded)                                              9 (= 2009)
1101                 29-30   QUARTER                                                                 1,2,3,4
1102                 31-32   LOT ID
1103
1104         TRACE - BLOCK 1
1105                 1-12    LOT ID
1106                 13-17   Wafer number
1107                 18-32   DW,  die number sequential
1108         */
1109 }
1110
1111 void printT5555Trace( t5555_tracedata_t data, uint8_t repeat ){
1112         PrintAndLog("-- T5555 (Q5) Trace Information -----------------------------");
1113         PrintAndLog("-------------------------------------------------------------");
1114         PrintAndLog(" ICR IC Revision  : %d", data.icr );
1115         PrintAndLog("     Lot          : %c%d", data.lotidc, data.lotid);
1116         PrintAndLog("     Wafer number : %d", data.wafer);
1117         PrintAndLog("     Die Number   : %d", data.dw);
1118         PrintAndLog("-------------------------------------------------------------");
1119         PrintAndLog(" Raw Data - Page 1");
1120         PrintAndLog("     Block 1  : 0x%08X  %s", data.bl1, sprint_bin(DemodBuffer+config.offset+repeat,32) );
1121         PrintAndLog("     Block 2  : 0x%08X  %s", data.bl2, sprint_bin(DemodBuffer+config.offset+repeat+32,32) );
1122
1123         /*
1124                 ** Q5 **
1125                 TRACE - BLOCK O and BLOCK1
1126                 Bits    Definition                              HEX
1127                 1-9             Header                  0x1FF
1128                 10-11 IC Revision
1129                 12-13 Lot ID char
1130                 15-35 Lot ID (NB parity)
1131                 36-41 Wafer number (NB parity)
1132                 42-58 DW, die number sequential (NB parity)
1133                 60-63 Parity bits
1134                 64    Always zero
1135         */
1136 }
1137
1138 //need to add Q5 info...
1139 int CmdT55xxInfo(const char *Cmd){
1140         /*
1141                 Page 0 Block 0 Configuration data.
1142                 Normal mode
1143                 Extended mode
1144         */
1145         bool pwdmode = false;
1146         uint32_t password = 0;
1147         char cmdp = param_getchar(Cmd, 0);
1148
1149         if (strlen(Cmd) > 1 || cmdp == 'h' || cmdp == 'H') return usage_t55xx_info();
1150
1151         if (strlen(Cmd)==0)
1152                 if ( !AquireData( T55x7_PAGE0, T55x7_CONFIGURATION_BLOCK, pwdmode, password ) )
1153                         return 1;
1154
1155         if (!DecodeT55xxBlock()) return 1;
1156
1157         // too little space to start with
1158         if ( DemodBufferLen < 32) return 1;
1159
1160         //
1161         PrintAndLog("Offset+32 ==%d\n DemodLen == %d", config.offset + 32,DemodBufferLen );
1162
1163         uint8_t si = config.offset;
1164         uint32_t bl0      = PackBits(si, 32, DemodBuffer);
1165         uint32_t safer    = PackBits(si, 4, DemodBuffer); si += 4;
1166         uint32_t resv     = PackBits(si, 7, DemodBuffer); si += 7;
1167         uint32_t dbr      = PackBits(si, 3, DemodBuffer); si += 3;
1168         uint32_t extend   = PackBits(si, 1, DemodBuffer); si += 1;
1169         uint32_t datamod  = PackBits(si, 5, DemodBuffer); si += 5;
1170         uint32_t pskcf    = PackBits(si, 2, DemodBuffer); si += 2;
1171         uint32_t aor      = PackBits(si, 1, DemodBuffer); si += 1;
1172         uint32_t otp      = PackBits(si, 1, DemodBuffer); si += 1;
1173         uint32_t maxblk   = PackBits(si, 3, DemodBuffer); si += 3;
1174         uint32_t pwd      = PackBits(si, 1, DemodBuffer); si += 1;
1175         uint32_t sst      = PackBits(si, 1, DemodBuffer); si += 1;
1176         uint32_t fw       = PackBits(si, 1, DemodBuffer); si += 1;
1177         uint32_t inv      = PackBits(si, 1, DemodBuffer); si += 1;
1178         uint32_t por      = PackBits(si, 1, DemodBuffer); si += 1;
1179
1180         if (config.Q5) PrintAndLog("*** Warning *** Config Info read off a Q5 will not display as expected");
1181         PrintAndLog("");
1182         PrintAndLog("-- T55x7 Configuration & Tag Information --------------------");
1183         PrintAndLog("-------------------------------------------------------------");
1184         PrintAndLog(" Safer key                 : %s", GetSaferStr(safer));
1185         PrintAndLog(" reserved                  : %d", resv);
1186         PrintAndLog(" Data bit rate             : %s", GetBitRateStr(dbr));
1187         PrintAndLog(" eXtended mode             : %s", (extend) ? "Yes - Warning":"No");
1188         PrintAndLog(" Modulation                : %s", GetModulationStr(datamod));
1189         PrintAndLog(" PSK clock frequency       : %d", pskcf);
1190         PrintAndLog(" AOR - Answer on Request   : %s", (aor) ? "Yes":"No");
1191         PrintAndLog(" OTP - One Time Pad        : %s", (otp) ? "Yes - Warning":"No" );
1192         PrintAndLog(" Max block                 : %d", maxblk);
1193         PrintAndLog(" Password mode             : %s", (pwd) ? "Yes":"No");
1194         PrintAndLog(" Sequence Start Terminator : %s", (sst) ? "Yes":"No");
1195         PrintAndLog(" Fast Write                : %s", (fw)  ? "Yes":"No");
1196         PrintAndLog(" Inverse data              : %s", (inv) ? "Yes":"No");
1197         PrintAndLog(" POR-Delay                 : %s", (por) ? "Yes":"No");
1198         PrintAndLog("-------------------------------------------------------------");
1199         PrintAndLog(" Raw Data - Page 0");
1200         PrintAndLog("     Block 0  : 0x%08X  %s", bl0, sprint_bin(DemodBuffer+config.offset,32) );
1201         PrintAndLog("-------------------------------------------------------------");
1202
1203         return 0;
1204 }
1205
1206 int CmdT55xxDump(const char *Cmd){
1207
1208         uint32_t password = 0;
1209         bool override = false;
1210         char cmdp = param_getchar(Cmd, 0);
1211         if ( cmdp == 'h' || cmdp == 'H') return usage_t55xx_dump();
1212
1213         bool usepwd = ( strlen(Cmd) > 0);
1214         if ( usepwd ){
1215                 password = param_get32ex(Cmd, 0, 0, 16);
1216                 if (param_getchar(Cmd, 1) =='o' )
1217                         override = true;
1218         }
1219
1220         printT5xxHeader(0);
1221         for ( uint8_t i = 0; i < 8; ++i)
1222                 T55xxReadBlock(i, 0, usepwd, override, password);
1223
1224         printT5xxHeader(1);
1225         for ( uint8_t   i = 0; i < 4; i++)
1226                 T55xxReadBlock(i, 1, usepwd, override, password);
1227
1228         return 1;
1229 }
1230
1231 int AquireData( uint8_t page, uint8_t block, bool pwdmode, uint32_t password ){
1232         // arg0 bitmodes:
1233         // bit0 = pwdmode
1234         // bit1 = page to read from
1235         uint8_t arg0 = (page<<1) | pwdmode;
1236         UsbCommand c = {CMD_T55XX_READ_BLOCK, {arg0, block, password}};
1237
1238         clearCommandBuffer();
1239         SendCommand(&c);
1240         if ( !WaitForResponseTimeout(CMD_ACK,NULL,2500) ) {
1241                 PrintAndLog("command execution time out");
1242                 return 0;
1243         }
1244
1245         uint8_t got[12000];
1246         GetFromBigBuf(got,sizeof(got),0);
1247         WaitForResponse(CMD_ACK,NULL);
1248         setGraphBuf(got, sizeof(got));
1249         return 1;
1250 }
1251
1252 char * GetBitRateStr(uint32_t id){
1253         static char buf[25];
1254
1255         char *retStr = buf;
1256                 switch (id){
1257                 case 0:   snprintf(retStr,sizeof(buf),"%d - RF/8",id);   break;
1258                 case 1:   snprintf(retStr,sizeof(buf),"%d - RF/16",id);  break;
1259                 case 2:   snprintf(retStr,sizeof(buf),"%d - RF/32",id);  break;
1260                 case 3:   snprintf(retStr,sizeof(buf),"%d - RF/40",id);  break;
1261                 case 4:   snprintf(retStr,sizeof(buf),"%d - RF/50",id);  break;
1262                 case 5:   snprintf(retStr,sizeof(buf),"%d - RF/64",id);  break;
1263                 case 6:   snprintf(retStr,sizeof(buf),"%d - RF/100",id); break;
1264                 case 7:   snprintf(retStr,sizeof(buf),"%d - RF/128",id); break;
1265                 default:  snprintf(retStr,sizeof(buf),"%d - (Unknown)",id); break;
1266                 }
1267         return buf;
1268 }
1269
1270 char * GetSaferStr(uint32_t id){
1271         static char buf[40];
1272         char *retStr = buf;
1273
1274         snprintf(retStr,sizeof(buf),"%d",id);
1275         if (id == 6) {
1276                 snprintf(retStr,sizeof(buf),"%d - passwd",id);
1277         }
1278         if (id == 9 ){
1279                 snprintf(retStr,sizeof(buf),"%d - testmode",id);
1280         }
1281
1282         return buf;
1283 }
1284
1285 char * GetModulationStr( uint32_t id){
1286         static char buf[60];
1287         char *retStr = buf;
1288
1289         switch (id){
1290                 case 0: snprintf(retStr,sizeof(buf),"%d - DIRECT (ASK/NRZ)",id); break;
1291                 case 1: snprintf(retStr,sizeof(buf),"%d - PSK 1 phase change when input changes",id); break;
1292                 case 2: snprintf(retStr,sizeof(buf),"%d - PSK 2 phase change on bitclk if input high",id); break;
1293                 case 3: snprintf(retStr,sizeof(buf),"%d - PSK 3 phase change on rising edge of input",id); break;
1294                 case 4: snprintf(retStr,sizeof(buf),"%d - FSK 1 RF/8  RF/5",id); break;
1295                 case 5: snprintf(retStr,sizeof(buf),"%d - FSK 2 RF/8  RF/10",id); break;
1296                 case 6: snprintf(retStr,sizeof(buf),"%d - FSK 1a RF/5  RF/8",id); break;
1297                 case 7: snprintf(retStr,sizeof(buf),"%d - FSK 2a RF/10  RF/8",id); break;
1298                 case 8: snprintf(retStr,sizeof(buf),"%d - Manchester",id); break;
1299                 case 16: snprintf(retStr,sizeof(buf),"%d - Biphase",id); break;
1300                 case 0x18:snprintf(retStr,sizeof(buf),"%d - Biphase a - AKA Conditional Dephase Encoding(CDP)",id); break;
1301                 case 17: snprintf(retStr,sizeof(buf),"%d - Reserved",id); break;
1302                 default: snprintf(retStr,sizeof(buf),"0x%02X (Unknown)",id); break;
1303                 }
1304         return buf;
1305 }
1306
1307 char * GetModelStrFromCID(uint32_t cid){
1308
1309         static char buf[10];
1310         char *retStr = buf;
1311
1312         if (cid == 1) snprintf(retStr, sizeof(buf),"ATA5577M1");
1313         if (cid == 2) snprintf(retStr, sizeof(buf),"ATA5577M2");
1314         return buf;
1315 }
1316
1317 char * GetSelectedModulationStr( uint8_t id){
1318
1319         static char buf[20];
1320         char *retStr = buf;
1321
1322         switch (id){
1323                 case DEMOD_FSK: snprintf(retStr,sizeof(buf),"FSK");     break;
1324                 case DEMOD_FSK1: snprintf(retStr,sizeof(buf),"FSK1"); break;
1325                 case DEMOD_FSK1a: snprintf(retStr,sizeof(buf),"FSK1a"); break;
1326                 case DEMOD_FSK2: snprintf(retStr,sizeof(buf),"FSK2"); break;
1327                 case DEMOD_FSK2a: snprintf(retStr,sizeof(buf),"FSK2a"); break;
1328                 case DEMOD_ASK: snprintf(retStr,sizeof(buf),"ASK"); break;
1329                 case DEMOD_NRZ: snprintf(retStr,sizeof(buf),"DIRECT/NRZ"); break;
1330                 case DEMOD_PSK1: snprintf(retStr,sizeof(buf),"PSK1"); break;
1331                 case DEMOD_PSK2: snprintf(retStr,sizeof(buf),"PSK2"); break;
1332                 case DEMOD_PSK3: snprintf(retStr,sizeof(buf),"PSK3"); break;
1333                 case DEMOD_BI: snprintf(retStr,sizeof(buf),"BIPHASE"); break;
1334                 case DEMOD_BIa: snprintf(retStr,sizeof(buf),"BIPHASEa - (CDP)"); break;
1335                 default: snprintf(retStr,sizeof(buf),"(Unknown)"); break;
1336                 }
1337         return buf;
1338 }
1339
1340 void t55x7_create_config_block( int tagtype ){
1341
1342         /*
1343      T55X7_DEFAULT_CONFIG_BLOCK, T55X7_RAW_CONFIG_BLOCK
1344      T55X7_EM_UNIQUE_CONFIG_BLOCK, T55X7_FDXB_CONFIG_BLOCK,
1345          T55X7_FDXB_CONFIG_BLOCK, T55X7_HID_26_CONFIG_BLOCK, T55X7_INDALA_64_CONFIG_BLOCK, T55X7_INDALA_224_CONFIG_BLOCK
1346          T55X7_GUARDPROXII_CONFIG_BLOCK, T55X7_VIKING_CONFIG_BLOCK,     T55X7_NORALYS_CONFIG_BLOCK, T55X7_IOPROX_CONFIG_BLOCK
1347         */
1348         static char buf[60];
1349         char *retStr = buf;
1350
1351         switch (tagtype){
1352                 case 0: snprintf(retStr, sizeof(buf),"%08X - T55X7 Default", T55X7_DEFAULT_CONFIG_BLOCK); break;
1353                 case 1: snprintf(retStr, sizeof(buf),"%08X - T55X7 Raw", T55X7_RAW_CONFIG_BLOCK); break;
1354                 case 2: snprintf(retStr, sizeof(buf),"%08X - T5555 Q5 Default", T5555_DEFAULT_CONFIG_BLOCK); break;
1355                 default:
1356                         break;
1357         }
1358         PrintAndLog(buf);
1359 }
1360
1361 int CmdResetRead(const char *Cmd) {
1362         UsbCommand c = {CMD_T55XX_RESET_READ, {0,0,0}};
1363
1364         clearCommandBuffer();
1365         SendCommand(&c);
1366         if ( !WaitForResponseTimeout(CMD_ACK,NULL,2500) ) {
1367                 PrintAndLog("command execution time out");
1368                 return 0;
1369         }
1370
1371         uint8_t got[BIGBUF_SIZE-1];
1372         GetFromBigBuf(got,sizeof(got),0);
1373         WaitForResponse(CMD_ACK,NULL);
1374         setGraphBuf(got, sizeof(got));
1375         return 1;
1376 }
1377 // ADD T5555 (Q5) Default config block
1378 int CmdT55xxWipe(const char *Cmd) {
1379         char writeData[20] = {0};
1380         char *ptrData = writeData;
1381         char cmdp = param_getchar(Cmd, 0);
1382         if ( cmdp == 'h' || cmdp == 'H') return usage_t55xx_wipe();
1383
1384         bool Q5 = (cmdp == 'q' || cmdp == 'Q');
1385
1386         // Try with the default password to reset block 0
1387         // With a pwd should work even if pwd bit not set
1388         PrintAndLog("\nBeginning Wipe of a T55xx tag (assuming the tag is not password protected)\n");
1389
1390         if ( Q5 ){
1391                 snprintf(ptrData,sizeof(writeData),"b 0 d 6001F004 p 0");
1392         } else {
1393                 snprintf(ptrData,sizeof(writeData),"b 0 d 000880E0 p 0");
1394         }
1395
1396         if (!CmdT55xxWriteBlock(ptrData)) PrintAndLog("Error writing blk 0");
1397
1398         for (uint8_t blk = 1; blk<8; blk++) {
1399
1400                 snprintf(ptrData,sizeof(writeData),"b %d d 0", blk);
1401
1402                 if (!CmdT55xxWriteBlock(ptrData)) PrintAndLog("Error writing blk %d", blk);
1403
1404                 memset(writeData,0x00, sizeof(writeData));
1405         }
1406         return 0;
1407 }
1408
1409 int CmdT55xxBruteForce(const char *Cmd) {
1410
1411         // load a default pwd file.
1412         char buf[9];
1413         char filename[FILE_PATH_SIZE]={0};
1414         int     keycnt = 0;
1415         int ch;
1416         uint8_t stKeyBlock = 20;
1417         uint8_t *keyBlock = NULL, *p = NULL;
1418     uint32_t start_password = 0x00000000; //start password
1419     uint32_t end_password   = 0xFFFFFFFF; //end   password
1420     bool found = false;
1421
1422     char cmdp = param_getchar(Cmd, 0);
1423         if (cmdp == 'h' || cmdp == 'H') return usage_t55xx_bruteforce();
1424
1425         keyBlock = calloc(stKeyBlock, 6);
1426         if (keyBlock == NULL) return 1;
1427
1428         if (cmdp == 'i' || cmdp == 'I') {
1429
1430                 int len = strlen(Cmd+2);
1431                 if (len > FILE_PATH_SIZE) len = FILE_PATH_SIZE;
1432                 memcpy(filename, Cmd+2, len);
1433
1434                 FILE * f = fopen( filename , "r");
1435
1436                 if ( !f ) {
1437                         PrintAndLog("File: %s: not found or locked.", filename);
1438                         free(keyBlock);
1439                         return 1;
1440                 }
1441
1442                 while( fgets(buf, sizeof(buf), f) ){
1443                         if (strlen(buf) < 8 || buf[7] == '\n') continue;
1444
1445                         while (fgetc(f) != '\n' && !feof(f)) ;  //goto next line
1446
1447                         //The line start with # is comment, skip
1448                         if( buf[0]=='#' ) continue;
1449
1450                         if (!isxdigit(buf[0])){
1451                                 PrintAndLog("File content error. '%s' must include 8 HEX symbols", buf);
1452                                 continue;
1453                         }
1454
1455                         buf[8] = 0;
1456
1457                         if ( stKeyBlock - keycnt < 2) {
1458                                 p = realloc(keyBlock, 6*(stKeyBlock+=10));
1459                                 if (!p) {
1460                                         PrintAndLog("Cannot allocate memory for defaultKeys");
1461                                         free(keyBlock);
1462                                         fclose(f);
1463                                         return 2;
1464                                 }
1465                                 keyBlock = p;
1466                         }
1467                         memset(keyBlock + 4 * keycnt, 0, 4);
1468                         num_to_bytes(strtoll(buf, NULL, 16), 4, keyBlock + 4*keycnt);
1469                         PrintAndLog("chk custom pwd[%2d] %08X", keycnt, bytes_to_num(keyBlock + 4*keycnt, 4));
1470                         keycnt++;
1471                         memset(buf, 0, sizeof(buf));
1472                 }
1473                 fclose(f);
1474
1475                 if (keycnt == 0) {
1476                         PrintAndLog("No keys found in file");
1477                         free(keyBlock);
1478                         return 1;
1479                 }
1480                 PrintAndLog("Loaded %d keys", keycnt);
1481
1482                 // loop
1483                 uint64_t testpwd = 0x00;
1484                 for (uint16_t c = 0; c < keycnt; ++c ) {
1485
1486                         if (ukbhit()) {
1487                                 ch = getchar();
1488                                 (void)ch;
1489                                 printf("\naborted via keyboard!\n");
1490                                 free(keyBlock);
1491                                 return 0;
1492                         }
1493
1494                         testpwd = bytes_to_num(keyBlock + 4*c, 4);
1495
1496                         PrintAndLog("Testing %08X", testpwd);
1497
1498
1499                         if ( !AquireData(T55x7_PAGE0, T55x7_CONFIGURATION_BLOCK, TRUE, testpwd)) {
1500                                 PrintAndLog("Aquireing data from device failed. Quitting");
1501                                 free(keyBlock);
1502                                 return 0;
1503                         }
1504
1505                         found = tryDetectModulation();
1506
1507                         if ( found ) {
1508                                 PrintAndLog("Found valid password: [%08X]", testpwd);
1509                                 free(keyBlock);
1510                                 return 0;
1511                         }
1512                 }
1513                 PrintAndLog("Password NOT found.");
1514                 free(keyBlock);
1515                 return 0;
1516         }
1517
1518         // Try to read Block 7, first :)
1519
1520         // incremental pwd range search
1521     start_password = param_get32ex(Cmd, 0, 0, 16);
1522         end_password = param_get32ex(Cmd, 1, 0, 16);
1523
1524         if ( start_password >= end_password ) {
1525                 free(keyBlock);
1526                 return usage_t55xx_bruteforce();
1527         }
1528
1529     PrintAndLog("Search password range [%08X -> %08X]", start_password, end_password);
1530
1531     uint32_t i = start_password;
1532
1533     while ((!found) && (i <= end_password)){
1534
1535                 printf(".");
1536                 fflush(stdout);
1537                 if (ukbhit()) {
1538                         ch = getchar();
1539                         (void)ch;
1540                         printf("\naborted via keyboard!\n");
1541                         free(keyBlock);
1542                         return 0;
1543                 }
1544
1545                 if (!AquireData(T55x7_PAGE0, T55x7_CONFIGURATION_BLOCK, TRUE, i)) {
1546                         PrintAndLog("Aquireing data from device failed. Quitting");
1547                         free(keyBlock);
1548                         return 0;
1549                 }
1550                 found = tryDetectModulation();
1551
1552                 if (found) break;
1553                 i++;
1554     }
1555
1556     PrintAndLog("");
1557
1558     if (found)
1559                 PrintAndLog("Found valid password: [%08x]", i);
1560     else
1561                 PrintAndLog("Password NOT found. Last tried: [%08x]", --i);
1562
1563         free(keyBlock);
1564     return 0;
1565 }
1566
1567 int tryOnePassword(uint32_t password)
1568 {
1569         PrintAndLog("Trying password %08x", password);
1570         if (!AquireData(T55x7_PAGE0, T55x7_CONFIGURATION_BLOCK, TRUE, password)) {
1571                 PrintAndLog("Aquireing data from device failed. Quitting");
1572                 return -1;
1573         }
1574
1575         if (tryDetectModulation())
1576                 return 1;
1577         else return 0;
1578 }
1579
1580 int CmdT55xxRecoverPW(const char *Cmd) {
1581         int bit = 0;
1582         uint32_t orig_password = 0x0;
1583         uint32_t curr_password = 0x0;
1584         uint32_t prev_password = 0xffffffff;
1585         uint32_t mask = 0x0;
1586         int found = 0;
1587
1588         char cmdp = param_getchar(Cmd, 0);
1589         if (cmdp == 'h' || cmdp == 'H') return usage_t55xx_recoverpw();
1590
1591         orig_password = param_get32ex(Cmd, 0, 0x51243648, 16); //password used by handheld cloners
1592
1593         // first try fliping each bit in the expected password
1594         while ((found != 1) && (bit < 32)) {
1595                 curr_password = orig_password ^ ( 1 << bit );
1596                 found = tryOnePassword(curr_password);
1597                 if (found == 1)
1598                         goto done;
1599                 else if (found == -1)
1600                         return 0;
1601                 bit++;
1602         }
1603
1604         // now try to use partial original password, since block 7 should have been completely
1605         // erased during the write sequence and it is possible that only partial password has been
1606         // written
1607         // not sure from which end the bit bits are written, so try from both ends
1608         // from low bit to high bit
1609         bit = 0;
1610         while ((found != 1) && (bit < 32)) {
1611                 mask += ( 1 << bit );
1612                 curr_password = orig_password & mask;
1613                 // if updated mask didn't change the password, don't try it again
1614                 if (prev_password == curr_password) {
1615                         bit++;
1616                         continue;
1617                 }
1618                 found = tryOnePassword(curr_password);
1619                 if (found == 1)
1620                         goto done;
1621                 else if (found == -1)
1622                         return 0;
1623                 bit++;
1624                 prev_password=curr_password;
1625         }
1626
1627         // from high bit to low
1628         bit = 0;
1629         mask = 0xffffffff;
1630         while ((found != 1) && (bit < 32)) {
1631                 mask -= ( 1 << bit );
1632                 curr_password = orig_password & mask;
1633                 // if updated mask didn't change the password, don't try it again
1634                 if (prev_password == curr_password) {
1635                         bit++;
1636                         continue;
1637                 }
1638                 found = tryOnePassword(curr_password);
1639                 if (found == 1)
1640                         goto done;
1641                 else if (found == -1)
1642                         return 0;
1643                 bit++;
1644                 prev_password=curr_password;
1645         }
1646 done:
1647         PrintAndLog("");
1648
1649         if (found == 1)
1650                 PrintAndLog("Found valid password: [%08x]", curr_password);
1651         else
1652                 PrintAndLog("Password NOT found.");
1653
1654         return 0;
1655 }
1656
1657 static command_t CommandTable[] = {
1658         {"help",                CmdHelp,           1, "This help"},
1659         {"bruteforce",CmdT55xxBruteForce,0, "<start password> <end password> [i <*.dic>] Simple bruteforce attack to find password"},
1660         {"config",              CmdT55xxSetConfig, 1, "Set/Get T55XX configuration (modulation, inverted, offset, rate)"},
1661         {"detect",              CmdT55xxDetect,    1, "[1] Try detecting the tag modulation from reading the configuration block."},
1662         {"dump",                CmdT55xxDump,      0, "[password] [o] Dump T55xx card block 0-7. Optional [password], [override]"},
1663         {"info",                CmdT55xxInfo,      1, "[1] Show T55x7 configuration data (page 0/ blk 0)"},
1664         {"read",                CmdT55xxReadBlock, 0, "b <block> p [password] [o] [1] -- Read T55xx block data. Optional [p password], [override], [page1]"},
1665         {"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)"},
1666         {"recoverpw",   CmdT55xxRecoverPW, 0, "[password] Try to recover from bad password write from a cloner. Only use on PW protected chips!"},
1667         {"special",             special,           0, "Show block changes with 64 different offsets"},
1668         {"trace",               CmdT55xxReadTrace, 1, "[1] Show T55x7 traceability data (page 1/ blk 0-1)"},
1669         {"wakeup",              CmdT55xxWakeUp,    0, "Send AOR wakeup command"},
1670         {"wipe",                CmdT55xxWipe,      0, "[q] Wipe a T55xx tag and set defaults (will destroy any data on tag)"},
1671         {"write",               CmdT55xxWriteBlock,0, "b <block> d <data> p [password] [1] -- Write T55xx block data. Optional [p password], [page1]"},
1672         {NULL, NULL, 0, NULL}
1673 };
1674
1675 int CmdLFT55XX(const char *Cmd) {
1676         clearCommandBuffer();
1677         CmdsParse(CommandTable, Cmd);
1678         return 0;
1679 }
1680
1681 int CmdHelp(const char *Cmd) {
1682         CmdsHelp(CommandTable);
1683         return 0;
1684 }