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