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

   1 //-----------------------------------------------------------------------------
   2 // Authored by Craig Young <cyoung@tripwire.com> based on cmdlfhid.c structure
   3 //
   4 // cmdlfhid.c is Copyright (C) 2010 iZsh <izsh at fail0verflow.com>
   5 //
   6 // This code is licensed to you under the terms of the GNU GPL, version 2 or,
   7 // at your option, any later version. See the LICENSE.txt file for the text of
   8 // the license.
   9 //-----------------------------------------------------------------------------
  10 // Low frequency AWID26/50 commands
  11 //-----------------------------------------------------------------------------
  12 #include "cmdlfawid.h"  // AWID function declarations
  13
  14 static int CmdHelp(const char *Cmd);
  15
  16 int usage_lf_awid_fskdemod(void) {
  17         PrintAndLog("Enables AWID compatible reader mode printing details of scanned AWID26 or AWID50 tags.");
  18         PrintAndLog("By default, values are printed and logged until the button is pressed or another USB command is issued.");
  19         PrintAndLog("If the [1] option is provided, reader mode is exited after reading a single AWID card.");
  20         PrintAndLog("");
  21         PrintAndLog("Usage:  lf awid fskdemod [h] [1]");
  22         PrintAndLog("Options:");
  23         PrintAndLog("      h :  This help");
  24         PrintAndLog("      1 : (optional) stop after reading a single card");
  25         PrintAndLog("");
  26         PrintAndLog("Samples:");
  27         PrintAndLog("       lf awid fskdemod");
  28         PrintAndLog("       lf awid fskdemod 1");
  29         return 0;
  30 }
  31
  32 int usage_lf_awid_sim(void) {
  33         PrintAndLog("Enables simulation of AWID card with specified facility-code and card number.");
  34         PrintAndLog("Simulation runs until the button is pressed or another USB command is issued.");
  35         PrintAndLog("");
  36         PrintAndLog("Usage:  lf awid sim [h] <format> <facility-code> <card-number>");
  37         PrintAndLog("Options:");
  38         PrintAndLog("                h :  This help");
  39         PrintAndLog("         <format> :  format length 26|34|37|50");
  40         PrintAndLog("  <facility-code> :  8|16bit value facility code");
  41         PrintAndLog("    <card number> :  16|32-bit value card number");
  42         PrintAndLog("");
  43         PrintAndLog("Samples:");
  44         PrintAndLog("       lf awid sim 26 224 1337");
  45         PrintAndLog("       lf awid sim 50 2001 13371337");
  46         return 0;
  47 }
  48
  49 int usage_lf_awid_clone(void) {
  50         PrintAndLog("Enables cloning of AWID card with specified facility-code and card number onto T55x7.");
  51         PrintAndLog("The T55x7 must be on the antenna when issuing this command.  T55x7 blocks are calculated and printed in the process.");
  52         PrintAndLog("");
  53         PrintAndLog("Usage:  lf awid clone [h] <format> <facility-code> <card-number> [Q5]");
  54         PrintAndLog("Options:");
  55         PrintAndLog("                h :  This help");
  56         PrintAndLog("         <format> :  format length 26|34|37|50");
  57         PrintAndLog("  <facility-code> :  8|16bit value facility code");
  58         PrintAndLog("    <card number> :  16|32-bit value card number");
  59         PrintAndLog("               Q5 :  optional - clone to Q5 (T5555) instead of T55x7 chip");
  60         PrintAndLog("");
  61         PrintAndLog("Samples:");
  62         PrintAndLog("       lf awid clone 26 224 1337");
  63         PrintAndLog("       lf awid clone 50 2001 13371337");
  64         return 0;
  65 }
  66
  67 int usage_lf_awid_brute(void){
  68         PrintAndLog("Enables bruteforce of AWID reader with specified facility-code.");
  69         PrintAndLog("This is a attack against reader. if cardnumber is given, it starts with it and goes up / down one step");
  70         PrintAndLog("if cardnumber is not given, it starts with 1 and goes up to 65535");
  71         PrintAndLog("");
  72         PrintAndLog("Usage:  lf awid brute [h] a <format> f <facility-code> c <cardnumber> d <delay>");
  73         PrintAndLog("Options:");
  74         PrintAndLog("       h                 :  This help");
  75         PrintAndLog("       a <format>        :  format length 26|50");
  76         PrintAndLog("       f <facility-code> :  8|16bit value facility code");
  77         PrintAndLog("       c <cardnumber>    :  (optional) cardnumber to start with, max 65535");
  78         PrintAndLog("       d <delay>         :  delay betweens attempts in ms. Default 1000ms");
  79         PrintAndLog("");
  80         PrintAndLog("Samples:");
  81         PrintAndLog("       lf awid brute a 26 f 224");
  82         PrintAndLog("       lf awid brute a 50 f 2001 d 2000");
  83         PrintAndLog("       lf awid brute a 50 f 2001 c 200 d 2000");
  84         return 0;
  85 }
  86
  87 static int sendPing(void){
  88         UsbCommand ping = {CMD_PING, {1, 2, 3}};
  89         SendCommand(&ping);
  90         SendCommand(&ping);
  91         SendCommand(&ping);
  92         clearCommandBuffer();
  93         UsbCommand resp;
  94         if (WaitForResponseTimeout(CMD_ACK, &resp, 1000))
  95                 return 0;
  96         return 1;
  97 }
  98
  99 static bool sendTry(uint8_t fmtlen, uint32_t fc, uint32_t cn, uint32_t delay, uint8_t *bs, size_t bs_len){
 100
 101         PrintAndLog("Trying FC: %u; CN: %u", fc, cn);
 102         if ( !getAWIDBits(fmtlen, fc, cn, bs)) {
 103                 PrintAndLog("Error with tag bitstream generation.");
 104                 return FALSE;
 105         }
 106
 107         uint64_t arg1 = (10<<8) + 8; // fcHigh = 10, fcLow = 8
 108         uint64_t arg2 = 50;              // clk RF/50 invert=0
 109         UsbCommand c = {CMD_FSK_SIM_TAG, {arg1, arg2, bs_len}};
 110         memcpy(c.d.asBytes, bs, bs_len);
 111         clearCommandBuffer();
 112         SendCommand(&c);
 113         msleep(delay);
 114         sendPing();
 115         return TRUE;
 116 }
 117
 118 int CmdAWIDDemodFSK(const char *Cmd) {
 119
 120         if (Cmd[0] == 'h' || Cmd[0] == 'H') return usage_lf_awid_fskdemod();
 121         uint8_t findone = (Cmd[0] == '1') ? 1 : 0;
 122         UsbCommand c = {CMD_AWID_DEMOD_FSK, {findone, 0, 0}};
 123         clearCommandBuffer();
 124         SendCommand(&c);
 125         return 0;
 126 }
 127
 128 int CmdAWIDRead(const char *Cmd) {
 129         CmdLFRead("s");
 130         getSamples("12000", TRUE);
 131         return CmdFSKdemodAWID(Cmd);
 132 }
 133
 134 //refactored by marshmellow
 135 int getAWIDBits(uint8_t fmtlen, uint32_t fc, uint32_t cn, uint8_t *bits) {
 136
 137         // the return bits, preamble 0000 0001
 138         bits[7] = 1;
 139
 140         uint8_t pre[66];
 141         memset(pre, 0, sizeof(pre));
 142
 143         // add formatlength
 144         num_to_bytebits(fmtlen, 8, pre);
 145
 146         // add facilitycode, cardnumber and wiegand parity bits
 147         switch (fmtlen) {
 148                 case 26:{
 149                         uint8_t wiegand[24];
 150                         num_to_bytebits(fc, 8, wiegand);
 151                         num_to_bytebits(cn, 16, wiegand+8);
 152                         wiegand_add_parity(pre+8, wiegand,  sizeof(wiegand));
 153                         break;
 154                 }
 155                 case 34:{
 156                         uint8_t wiegand[32];
 157                         num_to_bytebits(fc, 8, wiegand);
 158                         num_to_bytebits(cn, 24, wiegand+8);
 159                         wiegand_add_parity(pre+8, wiegand,  sizeof(wiegand));
 160                         break;
 161                 }
 162                 case 37:{
 163                         uint8_t wiegand[31];
 164                         num_to_bytebits(fc, 13, wiegand);
 165                         num_to_bytebits(cn, 18, wiegand+13);
 166                         wiegand_add_parity(pre+8, wiegand,  sizeof(wiegand));
 167                         break;
 168                 }
 169                 case 50: {
 170                         uint8_t wiegand[48];
 171                         num_to_bytebits(fc, 16, wiegand);
 172                         num_to_bytebits(cn, 32, wiegand+16);
 173                         wiegand_add_parity(pre+8, wiegand, sizeof(wiegand));
 174                         break;
 175                 }
 176         }
 177
 178         // add AWID 4bit parity
 179         size_t bitLen = addParity(pre, bits+8, 66, 4, 1);
 180
 181         if (bitLen != 88) return 0;
 182         return 1;
 183 }
 184
 185 static void verify_values(uint8_t *fmtlen, uint32_t *fc, uint32_t *cn){
 186         switch (*fmtlen) {
 187                 case 50:
 188                         if ((*fc & 0xFFFF) != *fc) {
 189                                 *fc &= 0xFFFF;
 190                                 PrintAndLog("Facility-Code Truncated to 16-bits (AWID50): %u", *fc);
 191                         }
 192                         break;
 193                 case 37:
 194                         if ((*fc & 0x1FFF) != *fc) {
 195                                 *fc &= 0x1FFF;
 196                                 PrintAndLog("Facility-Code Truncated to 13-bits (AWID37): %u", *fc);
 197                         }
 198                         if ((*cn & 0x3FFFF) != *cn) {
 199                                 *cn &= 0x3FFFF;
 200                                 PrintAndLog("Card Number Truncated to 18-bits (AWID37): %u", *cn);
 201                         }
 202                         break;
 203                 case 34:
 204                         if ((*fc & 0xFF) != *fc) {
 205                                 *fc &= 0xFF;
 206                                 PrintAndLog("Facility-Code Truncated to 8-bits (AWID34): %u", *fc);
 207                         }
 208                         if ((*cn & 0xFFFFFF) != *cn) {
 209                                 *cn &= 0xFFFFFF;
 210                                 PrintAndLog("Card Number Truncated to 24-bits (AWID34): %u", *cn);
 211                         }
 212                         break;
 213                 case 26:
 214                 default:
 215                         *fmtlen = 26;
 216                         if ((*fc & 0xFF) != *fc) {
 217                                 *fc &= 0xFF;
 218                                 PrintAndLog("Facility-Code Truncated to 8-bits (AWID26): %u", *fc);
 219                         }
 220                         if ((*cn & 0xFFFF) != *cn) {
 221                                 *cn &= 0xFFFF;
 222                                 PrintAndLog("Card Number Truncated to 16-bits (AWID26): %u", *cn);
 223                         }
 224                         break;
 225         }
 226 }
 227
 228 int CmdAWIDSim(const char *Cmd) {
 229         uint32_t fc = 0, cn = 0;
 230         uint8_t fmtlen = 0;
 231         uint8_t bits[96];
 232         uint8_t *bs = bits;
 233         size_t size = sizeof(bits);
 234         memset(bs, 0x00, size);
 235
 236         uint64_t arg1 = ( 10 << 8 ) + 8; // fcHigh = 10, fcLow = 8
 237         uint64_t arg2 = 50; // clk RF/50 invert=0
 238
 239         char cmdp = param_getchar(Cmd, 0);
 240         if (strlen(Cmd) == 0 || cmdp == 'h' || cmdp == 'H') return usage_lf_awid_sim();
 241
 242         fmtlen = param_get8(Cmd, 0);
 243         fc = param_get32ex(Cmd, 1, 0, 10);
 244         cn = param_get32ex(Cmd, 2, 0, 10);
 245         if ( !fc || !cn) return usage_lf_awid_sim();
 246
 247         verify_values(&fmtlen, &fc, &cn);
 248
 249         PrintAndLog("Emulating AWID %u -- FC: %u; CN: %u\n", fmtlen, fc, cn);
 250         PrintAndLog("Press pm3-button to abort simulation or run another command");
 251
 252         if (!getAWIDBits(fmtlen, fc, cn, bs)) {
 253                 PrintAndLog("Error with tag bitstream generation.");
 254                 return 1;
 255         }
 256         // AWID uses: fcHigh: 10, fcLow: 8, clk: 50, invert: 0
 257         // arg1 --- fcHigh<<8 + fcLow
 258         // arg2 --- Inversion and clk setting
 259         // 96   --- Bitstream length: 96-bits == 12 bytes
 260         UsbCommand c = {CMD_FSK_SIM_TAG, {arg1, arg2, size}};
 261         memcpy(c.d.asBytes, bs, size);
 262         clearCommandBuffer();
 263         SendCommand(&c);
 264         return 0;
 265 }
 266
 267 int CmdAWIDClone(const char *Cmd) {
 268         uint32_t blocks[4] = {T55x7_MODULATION_FSK2a | T55x7_BITRATE_RF_50 | 3<<T55x7_MAXBLOCK_SHIFT, 0, 0, 0};
 269         uint32_t fc = 0, cn = 0;
 270         uint8_t fmtlen = 0;
 271         uint8_t bits[96];
 272         uint8_t *bs=bits;
 273         memset(bs,0,sizeof(bits));
 274
 275         char cmdp = param_getchar(Cmd, 0);
 276         if (strlen(Cmd) == 0 || cmdp == 'h' || cmdp == 'H') return usage_lf_awid_clone();
 277
 278         fmtlen = param_get8(Cmd, 0);
 279         fc = param_get32ex(Cmd, 1, 0, 10);
 280         cn = param_get32ex(Cmd, 2, 0, 10);
 281
 282         if ( !fc || !cn) return usage_lf_awid_clone();
 283
 284         if (param_getchar(Cmd, 3) == 'Q' || param_getchar(Cmd, 3) == 'q')
 285                 //t5555 (Q5) BITRATE = (RF-2)/2 (iceman)
 286                 blocks[0] = T5555_MODULATION_FSK2 | T5555_INVERT_OUTPUT | ((50-2)>>1) << T5555_BITRATE_SHIFT | 3<<T5555_MAXBLOCK_SHIFT;
 287
 288         verify_values(&fmtlen, &fc, &cn);
 289
 290         if ( !getAWIDBits(fmtlen, fc, cn, bs)) {
 291                 PrintAndLog("Error with tag bitstream generation.");
 292                 return 1;
 293         }
 294
 295         blocks[1] = bytebits_to_byte(bs,32);
 296         blocks[2] = bytebits_to_byte(bs+32,32);
 297         blocks[3] = bytebits_to_byte(bs+64,32);
 298
 299         PrintAndLog("Preparing to clone AWID %u to T55x7 with FC: %u, CN: %u", fmtlen, fc, cn);
 300         PrintAndLog("Blk | Data ");
 301         PrintAndLog("----+------------");
 302         PrintAndLog(" 00 | 0x%08x", blocks[0]);
 303         PrintAndLog(" 01 | 0x%08x", blocks[1]);
 304         PrintAndLog(" 02 | 0x%08x", blocks[2]);
 305         PrintAndLog(" 03 | 0x%08x", blocks[3]);
 306
 307         UsbCommand resp;
 308         UsbCommand c = {CMD_T55XX_WRITE_BLOCK, {0,0,0}};
 309
 310         for (uint8_t i=0; i<4; i++) {
 311                 c.arg[0] = blocks[i];
 312                 c.arg[1] = i;
 313                 clearCommandBuffer();
 314                 SendCommand(&c);
 315                 if (!WaitForResponseTimeout(CMD_ACK, &resp, T55XX_WRITE_TIMEOUT)){
 316                         PrintAndLog("Error occurred, device did not respond during write operation.");
 317                         return -1;
 318                 }
 319         }
 320         return 0;
 321 }
 322
 323 int CmdAWIDBrute(const char *Cmd){
 324
 325         bool errors = false;
 326         uint32_t fc = 0, cn = 0, delay = 1000;
 327         uint8_t fmtlen = 0;
 328         uint8_t bits[96];
 329         uint8_t *bs = bits;
 330         size_t size = sizeof(bits);
 331         memset(bs, 0x00, size);
 332         uint8_t cmdp = 0;
 333
 334         while(param_getchar(Cmd, cmdp) != 0x00 && !errors) {
 335                 switch(param_getchar(Cmd, cmdp)) {
 336                 case 'h':
 337                 case 'H':
 338                         return usage_lf_awid_brute();
 339                 case 'f':
 340                 case 'F':
 341                         fc =  param_get32ex(Cmd ,cmdp+1, 0, 10);
 342                         if ( !fc )
 343                                 errors = true;
 344                         cmdp += 2;
 345                         break;
 346                 case 'd':
 347                 case 'D':
 348                         // delay between attemps,  defaults to 1000ms.
 349                         delay = param_get32ex(Cmd, cmdp+1, 1000, 10);
 350                         cmdp += 2;
 351                         break;
 352                 case 'c':
 353                 case 'C':
 354                         cn = param_get32ex(Cmd, cmdp+1, 0, 10);
 355                         // truncate cardnumber.
 356                         cn &= 0xFFFF;
 357                         cmdp += 2;
 358                         break;
 359                 case 'a':
 360                 case 'A':
 361                         fmtlen = param_get8(Cmd, cmdp+1);
 362                         cmdp += 2;
 363                         break;
 364                 default:
 365                         PrintAndLog("Unknown parameter '%c'", param_getchar(Cmd, cmdp));
 366                         errors = true;
 367                         break;
 368                 }
 369         }
 370         if ( fc == 0 )errors = true;
 371         if ( errors ) return usage_lf_awid_brute();
 372
 373         // limit fc according to selected format
 374         switch(fmtlen) {
 375                 case 50:
 376                         if ((fc & 0xFFFF) != fc) {
 377                                 fc &= 0xFFFF;
 378                                 PrintAndLog("Facility-code truncated to 16-bits (AWID50): %u", fc);
 379                         }
 380                         break;
 381                 default:
 382                         if ((fc & 0xFF) != fc) {
 383                                 fc &= 0xFF;
 384                                 PrintAndLog("Facility-code truncated to 8-bits (AWID26): %u", fc);
 385                         }
 386                         break;
 387         }
 388
 389         PrintAndLog("Bruteforceing AWID %d Reader", fmtlen);
 390         PrintAndLog("Press pm3-button to abort simulation or press key");
 391
 392         uint16_t up = cn;
 393         uint16_t down = cn;
 394
 395         for (;;){
 396
 397                 if ( offline ) {
 398                         printf("Device offline\n");
 399                         return  2;
 400                 }
 401                 if (ukbhit()) {
 402                         PrintAndLog("aborted via keyboard!");
 403                         return sendPing();
 404                 }
 405
 406                 // Do one up
 407                 if ( up < 0xFFFF )
 408                         if ( !sendTry(fmtlen, fc, up++, delay, bs, size)) return 1;
 409
 410                 // Do one down  (if cardnumber is given)
 411                 if ( cn > 1 )
 412                         if ( down > 1 )
 413                                 if ( !sendTry(fmtlen, fc, --down, delay, bs, size)) return 1;
 414         }
 415         return 0;
 416 }
 417
 418 static command_t CommandTable[] = {
 419         {"help",      CmdHelp,         1, "This help"},
 420         {"fskdemod",  CmdAWIDDemodFSK, 0, "Realtime AWID FSK demodulator"},
 421         {"read",      CmdAWIDRead,     0, "Attempt to read and extract tag data"},
 422         {"sim",       CmdAWIDSim,      0, "AWID tag simulator"},
 423         {"clone",     CmdAWIDClone,    0, "Clone AWID to T55x7"},
 424         {"brute",         CmdAWIDBrute,    0, "Bruteforce card number against reader"},
 425         {NULL, NULL, 0, NULL}
 426 };
 427
 428 int CmdLFAWID(const char *Cmd) {
 429         clearCommandBuffer();
 430         CmdsParse(CommandTable, Cmd);
 431         return 0;
 432 }
 433
 434 int CmdHelp(const char *Cmd) {
 435         CmdsHelp(CommandTable);
 436         return 0;
 437 }