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         int findone = 0;
 120         if (Cmd[0] == 'h' || Cmd[0] == 'H') return usage_lf_awid_fskdemod();
 121         if (Cmd[0] == '1') findone = 1;
 122
 123         UsbCommand c = {CMD_AWID_DEMOD_FSK, {findone, 0, 0}};
 124         clearCommandBuffer();
 125         SendCommand(&c);
 126         return 0;
 127 }
 128
 129 int CmdAWIDRead(const char *Cmd) {
 130         CmdLFRead("s");
 131         getSamples("12000", TRUE);
 132         return CmdFSKdemodAWID(Cmd);
 133 }
 134
 135 //refactored by marshmellow
 136 int getAWIDBits(uint8_t fmtlen, uint32_t fc, uint32_t cn, uint8_t *bits) {
 137
 138         // the return bits, preamble 0000 0001
 139         bits[7] = 1;
 140
 141         uint8_t pre[66];
 142         memset(pre, 0, sizeof(pre));
 143
 144         // add formatlength
 145         num_to_bytebits(fmtlen, 8, pre);
 146
 147         // add facilitycode, cardnumber and wiegand parity bits
 148         switch (fmtlen) {
 149                 case 26:{
 150                         uint8_t wiegand[24];
 151                         num_to_bytebits(fc, 8, wiegand);
 152                         num_to_bytebits(cn, 16, wiegand+8);
 153                         wiegand_add_parity(pre+8, wiegand,  sizeof(wiegand));
 154                         break;
 155                 }
 156                 case 34:{
 157                         uint8_t wiegand[32];
 158                         num_to_bytebits(fc, 8, wiegand);
 159                         num_to_bytebits(cn, 24, wiegand+8);
 160                         wiegand_add_parity(pre+8, wiegand,  sizeof(wiegand));
 161                         break;
 162                 }
 163                 case 37:{
 164                         uint8_t wiegand[31];
 165                         num_to_bytebits(fc, 13, wiegand);
 166                         num_to_bytebits(cn, 18, wiegand+13);
 167                         wiegand_add_parity(pre+8, wiegand,  sizeof(wiegand));
 168                         break;
 169                 }
 170                 case 50: {
 171                         uint8_t wiegand[48];
 172                         num_to_bytebits(fc, 16, wiegand);
 173                         num_to_bytebits(cn, 32, wiegand+16);
 174                         wiegand_add_parity(pre+8, wiegand, sizeof(wiegand));
 175                         break;
 176                 }
 177         }
 178
 179         // add AWID 4bit parity
 180         size_t bitLen = addParity(pre, bits+8, 66, 4, 1);
 181
 182         if (bitLen != 88) return 0;
 183         return 1;
 184 }
 185
 186 static void verify_values(uint8_t *fmtlen, uint32_t *fc, uint32_t *cn){
 187         switch (*fmtlen) {
 188                 case 50:
 189                         if ((*fc & 0xFFFF) != *fc) {
 190                                 *fc &= 0xFFFF;
 191                                 PrintAndLog("Facility-Code Truncated to 16-bits (AWID50): %u", *fc);
 192                         }
 193                         break;
 194                 case 37:
 195                         if ((*fc & 0x1FFF) != *fc) {
 196                                 *fc &= 0x1FFF;
 197                                 PrintAndLog("Facility-Code Truncated to 13-bits (AWID37): %u", *fc);
 198                         }
 199                         if ((*cn & 0x3FFFF) != *cn) {
 200                                 *cn &= 0x3FFFF;
 201                                 PrintAndLog("Card Number Truncated to 18-bits (AWID37): %u", *cn);
 202                         }
 203                         break;
 204                 case 34:
 205                         if ((*fc & 0xFF) != *fc) {
 206                                 *fc &= 0xFF;
 207                                 PrintAndLog("Facility-Code Truncated to 8-bits (AWID34): %u", *fc);
 208                         }
 209                         if ((*cn & 0xFFFFFF) != *cn) {
 210                                 *cn &= 0xFFFFFF;
 211                                 PrintAndLog("Card Number Truncated to 24-bits (AWID34): %u", *cn);
 212                         }
 213                         break;
 214                 case 26:
 215                 default:
 216                         *fmtlen = 26;
 217                         if ((*fc & 0xFF) != *fc) {
 218                                 *fc &= 0xFF;
 219                                 PrintAndLog("Facility-Code Truncated to 8-bits (AWID26): %u", *fc);
 220                         }
 221                         if ((*cn & 0xFFFF) != *cn) {
 222                                 *cn &= 0xFFFF;
 223                                 PrintAndLog("Card Number Truncated to 16-bits (AWID26): %u", *cn);
 224                         }
 225                         break;
 226         }
 227 }
 228
 229 int CmdAWIDSim(const char *Cmd) {
 230         uint32_t fc = 0, cn = 0;
 231         uint8_t fmtlen = 0;
 232         uint8_t bits[96];
 233         uint8_t *bs = bits;
 234         size_t size = sizeof(bits);
 235         memset(bs, 0x00, size);
 236
 237         uint64_t arg1 = ( 10 << 8 ) + 8; // fcHigh = 10, fcLow = 8
 238         uint64_t arg2 = 50; // clk RF/50 invert=0
 239
 240         char cmdp = param_getchar(Cmd, 0);
 241         if (strlen(Cmd) == 0 || cmdp == 'h' || cmdp == 'H') return usage_lf_awid_sim();
 242
 243         fmtlen = param_get8(Cmd, 0);
 244         fc = param_get32ex(Cmd, 1, 0, 10);
 245         cn = param_get32ex(Cmd, 2, 0, 10);
 246         if ( !fc || !cn) return usage_lf_awid_sim();
 247
 248         verify_values(&fmtlen, &fc, &cn);
 249
 250         PrintAndLog("Emulating AWID %u -- FC: %u; CN: %u\n", fmtlen, fc, cn);
 251         PrintAndLog("Press pm3-button to abort simulation or run another command");
 252
 253         if (!getAWIDBits(fmtlen, fc, cn, bs)) {
 254                 PrintAndLog("Error with tag bitstream generation.");
 255                 return 1;
 256         }
 257         // AWID uses: fcHigh: 10, fcLow: 8, clk: 50, invert: 0
 258         // arg1 --- fcHigh<<8 + fcLow
 259         // arg2 --- Inversion and clk setting
 260         // 96   --- Bitstream length: 96-bits == 12 bytes
 261         UsbCommand c = {CMD_FSK_SIM_TAG, {arg1, arg2, size}};
 262         memcpy(c.d.asBytes, bs, size);
 263         clearCommandBuffer();
 264         SendCommand(&c);
 265         return 0;
 266 }
 267
 268 int CmdAWIDClone(const char *Cmd) {
 269         uint32_t blocks[4] = {T55x7_MODULATION_FSK2a | T55x7_BITRATE_RF_50 | 3<<T55x7_MAXBLOCK_SHIFT, 0, 0, 0};
 270         uint32_t fc = 0, cn = 0;
 271         uint8_t fmtlen = 0;
 272         uint8_t bits[96];
 273         uint8_t *bs=bits;
 274         memset(bs,0,sizeof(bits));
 275
 276         char cmdp = param_getchar(Cmd, 0);
 277         if (strlen(Cmd) == 0 || cmdp == 'h' || cmdp == 'H') return usage_lf_awid_clone();
 278
 279         fmtlen = param_get8(Cmd, 0);
 280         fc = param_get32ex(Cmd, 1, 0, 10);
 281         cn = param_get32ex(Cmd, 2, 0, 10);
 282
 283         if ( !fc || !cn) return usage_lf_awid_clone();
 284
 285         if (param_getchar(Cmd, 4) == 'Q' || param_getchar(Cmd, 4) == 'q')
 286                 //t5555 (Q5) BITRATE = (RF-2)/2 (iceman)
 287                 blocks[0] = T5555_MODULATION_FSK2 | T5555_INVERT_OUTPUT | 50<<T5555_BITRATE_SHIFT | 3<<T5555_MAXBLOCK_SHIFT;
 288
 289         verify_values(&fmtlen, &fc, &cn);
 290
 291         if ( !getAWIDBits(fmtlen, fc, cn, bs)) {
 292                 PrintAndLog("Error with tag bitstream generation.");
 293                 return 1;
 294         }
 295
 296         blocks[1] = bytebits_to_byte(bs,32);
 297         blocks[2] = bytebits_to_byte(bs+32,32);
 298         blocks[3] = bytebits_to_byte(bs+64,32);
 299
 300         PrintAndLog("Preparing to clone AWID %u to T55x7 with FC: %u, CN: %u", fmtlen, fc, cn);
 301         PrintAndLog("Blk | Data ");
 302         PrintAndLog("----+------------");
 303         PrintAndLog(" 00 | 0x%08x", blocks[0]);
 304         PrintAndLog(" 01 | 0x%08x", blocks[1]);
 305         PrintAndLog(" 02 | 0x%08x", blocks[2]);
 306         PrintAndLog(" 03 | 0x%08x", blocks[3]);
 307
 308         UsbCommand resp;
 309         UsbCommand c = {CMD_T55XX_WRITE_BLOCK, {0,0,0}};
 310
 311         for (uint8_t i=0; i<4; i++) {
 312                 c.arg[0] = blocks[i];
 313                 c.arg[1] = i;
 314                 clearCommandBuffer();
 315                 SendCommand(&c);
 316                 if (!WaitForResponseTimeout(CMD_ACK, &resp, 1500)){
 317                         PrintAndLog("Error occurred, device did not respond during write operation.");
 318                         return -1;
 319                 }
 320         }
 321         return 0;
 322 }
 323
 324 int CmdAWIDBrute(const char *Cmd){
 325
 326         bool errors = false;
 327         uint32_t fc = 0, cn = 0, delay = 1000;
 328         uint8_t fmtlen = 0;
 329         uint8_t bits[96];
 330         uint8_t *bs = bits;
 331         size_t size = sizeof(bits);
 332         memset(bs, 0x00, size);
 333         uint8_t cmdp = 0;
 334
 335         while(param_getchar(Cmd, cmdp) != 0x00 && !errors) {
 336                 switch(param_getchar(Cmd, cmdp)) {
 337                 case 'h':
 338                 case 'H':
 339                         return usage_lf_awid_brute();
 340                 case 'f':
 341                 case 'F':
 342                         fc =  param_get32ex(Cmd ,cmdp+1, 0, 10);
 343                         if ( !fc )
 344                                 errors = true;
 345                         cmdp += 2;
 346                         break;
 347                 case 'd':
 348                 case 'D':
 349                         // delay between attemps,  defaults to 1000ms.
 350                         delay = param_get32ex(Cmd, cmdp+1, 1000, 10);
 351                         cmdp += 2;
 352                         break;
 353                 case 'c':
 354                 case 'C':
 355                         cn = param_get32ex(Cmd, cmdp+1, 0, 10);
 356                         // truncate cardnumber.
 357                         cn &= 0xFFFF;
 358                         cmdp += 2;
 359                         break;
 360                 case 'a':
 361                 case 'A':
 362                         fmtlen = param_get8(Cmd, cmdp+1);
 363                         cmdp += 2;
 364                         break;
 365                 default:
 366                         PrintAndLog("Unknown parameter '%c'", param_getchar(Cmd, cmdp));
 367                         errors = true;
 368                         break;
 369                 }
 370         }
 371         if ( fc == 0 )errors = true;
 372         if ( errors ) return usage_lf_awid_brute();
 373
 374         // limit fc according to selected format
 375         switch(fmtlen) {
 376                 case 50:
 377                         if ((fc & 0xFFFF) != fc) {
 378                                 fc &= 0xFFFF;
 379                                 PrintAndLog("Facility-code truncated to 16-bits (AWID50): %u", fc);
 380                         }
 381                         break;
 382                 default:
 383                         if ((fc & 0xFF) != fc) {
 384                                 fc &= 0xFF;
 385                                 PrintAndLog("Facility-code truncated to 8-bits (AWID26): %u", fc);
 386                         }
 387                         break;
 388         }
 389
 390         PrintAndLog("Bruteforceing AWID %d Reader", fmtlen);
 391         PrintAndLog("Press pm3-button to abort simulation or press key");
 392
 393         uint16_t up = cn;
 394         uint16_t down = cn;
 395
 396         for (;;){
 397
 398                 if ( offline ) {
 399                         printf("Device offline\n");
 400                         return  2;
 401                 }
 402                 if (ukbhit()) {
 403                         PrintAndLog("aborted via keyboard!");
 404                         return sendPing();
 405                 }
 406
 407                 // Do one up
 408                 if ( up < 0xFFFF )
 409                         if ( !sendTry(fmtlen, fc, up++, delay, bs, size)) return 1;
 410
 411                 // Do one down  (if cardnumber is given)
 412                 if ( cn > 1 )
 413                         if ( down > 1 )
 414                                 if ( !sendTry(fmtlen, fc, --down, delay, bs, size)) return 1;
 415         }
 416         return 0;
 417 }
 418
 419 static command_t CommandTable[] = {
 420         {"help",      CmdHelp,         1, "This help"},
 421         {"fskdemod",  CmdAWIDDemodFSK, 0, "Realtime AWID FSK demodulator"},
 422         {"read",      CmdAWIDRead,     0, "Attempt to read and extract tag data"},
 423         {"sim",       CmdAWIDSim,      0, "AWID tag simulator"},
 424         {"clone",     CmdAWIDClone,    0, "Clone AWID to T55x7"},
 425         {"brute",         CmdAWIDBrute,    0, "Bruteforce card number against reader"},
 426         {NULL, NULL, 0, NULL}
 427 };
 428
 429 int CmdLFAWID(const char *Cmd) {
 430         clearCommandBuffer();
 431         CmdsParse(CommandTable, Cmd);
 432         return 0;
 433 }
 434
 435 int CmdHelp(const char *Cmd) {
 436         CmdsHelp(CommandTable);
 437         return 0;
 438 }