git.zerfleddert.de Git - proxmark3-svn/blob - client/cmdlfem4x.c

   1 //-----------------------------------------------------------------------------
   2 // Copyright (C) 2010 iZsh <izsh at fail0verflow.com>
   3 //
   4 // This code is licensed to you under the terms of the GNU GPL, version 2 or,
   5 // at your option, any later version. See the LICENSE.txt file for the text of
   6 // the license.
   7 //-----------------------------------------------------------------------------
   8 // Low frequency EM4x commands
   9 //-----------------------------------------------------------------------------
  10
  11 #include <stdio.h>
  12 #include <string.h>
  13 #include <inttypes.h>
  14 #include "proxmark3.h"
  15 #include "ui.h"
  16 #include "util.h"
  17 #include "graph.h"
  18 #include "cmdparser.h"
  19 #include "cmddata.h"
  20 #include "cmdlf.h"
  21 #include "cmdlfem4x.h"
  22 #include "lfdemod.h"
  23
  24 #define llx PRIx64
  25
  26 char *global_em410xId;
  27
  28 static int CmdHelp(const char *Cmd);
  29
  30 int CmdEMdemodASK(const char *Cmd)
  31 {
  32         char cmdp = param_getchar(Cmd, 0);
  33         int findone = (cmdp == '1') ? 1 : 0;
  34         UsbCommand c={CMD_EM410X_DEMOD};
  35         c.arg[0]=findone;
  36         SendCommand(&c);
  37         return 0;
  38 }
  39
  40 /* Read the ID of an EM410x tag.
  41  * Format:
  42  *   1111 1111 1           <-- standard non-repeatable header
  43  *   XXXX [row parity bit] <-- 10 rows of 5 bits for our 40 bit tag ID
  44  *   ....
  45  *   CCCC                  <-- each bit here is parity for the 10 bits above in corresponding column
  46  *   0                     <-- stop bit, end of tag
  47  */
  48 int CmdEM410xRead(const char *Cmd)
  49 {
  50         uint32_t hi=0;
  51         uint64_t lo=0;
  52
  53         if(!AskEm410xDemod("", &hi, &lo, false)) return 0;
  54         PrintAndLog("EM410x pattern found: ");
  55         printEM410x(hi, lo);
  56         if (hi){
  57                 PrintAndLog ("EM410x XL pattern found");
  58                 return 0;
  59         }
  60         char id[12] = {0x00};
  61         sprintf(id, "%010llx",lo);
  62
  63         global_em410xId = id;
  64         return 1;
  65 }
  66
  67 // emulate an EM410X tag
  68 int CmdEM410xSim(const char *Cmd)
  69 {
  70         int i, n, j, binary[4], parity[4];
  71
  72         char cmdp = param_getchar(Cmd, 0);
  73         uint8_t uid[5] = {0x00};
  74
  75         if (cmdp == 'h' || cmdp == 'H') {
  76                 PrintAndLog("Usage:  lf em4x em410xsim <UID>");
  77                 PrintAndLog("");
  78                 PrintAndLog("     sample: lf em4x em410xsim 0F0368568B");
  79                 return 0;
  80         }
  81
  82         if (param_gethex(Cmd, 0, uid, 10)) {
  83                 PrintAndLog("UID must include 10 HEX symbols");
  84                 return 0;
  85         }
  86
  87         PrintAndLog("Starting simulating UID %02X%02X%02X%02X%02X", uid[0],uid[1],uid[2],uid[3],uid[4]);
  88         PrintAndLog("Press pm3-button to about simulation");
  89
  90         /* clock is 64 in EM410x tags */
  91         int clock = 64;
  92
  93         /* clear our graph */
  94         ClearGraph(0);
  95
  96                 /* write 9 start bits */
  97                 for (i = 0; i < 9; i++)
  98                         AppendGraph(0, clock, 1);
  99
 100                 /* for each hex char */
 101                 parity[0] = parity[1] = parity[2] = parity[3] = 0;
 102                 for (i = 0; i < 10; i++)
 103                 {
 104                         /* read each hex char */
 105                         sscanf(&Cmd[i], "%1x", &n);
 106                         for (j = 3; j >= 0; j--, n/= 2)
 107                                 binary[j] = n % 2;
 108
 109                         /* append each bit */
 110                         AppendGraph(0, clock, binary[0]);
 111                         AppendGraph(0, clock, binary[1]);
 112                         AppendGraph(0, clock, binary[2]);
 113                         AppendGraph(0, clock, binary[3]);
 114
 115                         /* append parity bit */
 116                         AppendGraph(0, clock, binary[0] ^ binary[1] ^ binary[2] ^ binary[3]);
 117
 118                         /* keep track of column parity */
 119                         parity[0] ^= binary[0];
 120                         parity[1] ^= binary[1];
 121                         parity[2] ^= binary[2];
 122                         parity[3] ^= binary[3];
 123                 }
 124
 125                 /* parity columns */
 126                 AppendGraph(0, clock, parity[0]);
 127                 AppendGraph(0, clock, parity[1]);
 128                 AppendGraph(0, clock, parity[2]);
 129                 AppendGraph(0, clock, parity[3]);
 130
 131                 /* stop bit */
 132         AppendGraph(1, clock, 0);
 133
 134         CmdLFSim("0"); //240 start_gap.
 135         return 0;
 136 }
 137
 138 /* Function is equivalent of lf read + data samples + em410xread
 139  * looped until an EM410x tag is detected
 140  *
 141  * Why is CmdSamples("16000")?
 142  *  TBD: Auto-grow sample size based on detected sample rate.  IE: If the
 143  *       rate gets lower, then grow the number of samples
 144  *  Changed by martin, 4000 x 4 = 16000,
 145  *  see http://www.proxmark.org/forum/viewtopic.php?pid=7235#p7235
 146 */
 147 int CmdEM410xWatch(const char *Cmd)
 148 {
 149         do {
 150                 if (ukbhit()) {
 151                         printf("\naborted via keyboard!\n");
 152                         break;
 153                 }
 154
 155                 CmdLFRead("s");
 156                 getSamples("8201",true); //capture enough to get 2 complete preambles (4096*2+9)
 157         } while (!CmdEM410xRead(""));
 158
 159         return 0;
 160 }
 161
 162 //currently only supports manchester modulations
 163 int CmdEM410xWatchnSpoof(const char *Cmd)
 164 {
 165         CmdEM410xWatch(Cmd);
 166         PrintAndLog("# Replaying captured ID: %s",global_em410xId);
 167         CmdLFaskSim("");
 168         return 0;
 169 }
 170
 171 int CmdEM410xWrite(const char *Cmd)
 172 {
 173         uint64_t id = 0xFFFFFFFFFFFFFFFF; // invalid id value
 174         int card = 0xFF; // invalid card value
 175         unsigned int clock = 0; // invalid clock value
 176
 177         sscanf(Cmd, "%" PRIx64 " %d %d", &id, &card, &clock);
 178
 179         // Check ID
 180         if (id == 0xFFFFFFFFFFFFFFFF) {
 181                 PrintAndLog("Error! ID is required.\n");
 182                 return 0;
 183         }
 184         if (id >= 0x10000000000) {
 185                 PrintAndLog("Error! Given EM410x ID is longer than 40 bits.\n");
 186                 return 0;
 187         }
 188
 189         // Check Card
 190         if (card == 0xFF) {
 191                 PrintAndLog("Error! Card type required.\n");
 192                 return 0;
 193         }
 194         if (card < 0) {
 195                 PrintAndLog("Error! Bad card type selected.\n");
 196                 return 0;
 197         }
 198
 199         // Check Clock
 200         if (card == 1)
 201         {
 202                 // Default: 64
 203                 if (clock == 0)
 204                         clock = 64;
 205
 206                 // Allowed clock rates: 16, 32 and 64
 207                 if ((clock != 16) && (clock != 32) && (clock != 64)) {
 208                         PrintAndLog("Error! Clock rate %d not valid. Supported clock rates are 16, 32 and 64.\n", clock);
 209                         return 0;
 210                 }
 211         }
 212         else if (clock != 0)
 213         {
 214                 PrintAndLog("Error! Clock rate is only supported on T55x7 tags.\n");
 215                 return 0;
 216         }
 217
 218         if (card == 1) {
 219                 PrintAndLog("Writing %s tag with UID 0x%010" PRIx64 " (clock rate: %d)", "T55x7", id, clock);
 220                 // NOTE: We really should pass the clock in as a separate argument, but to
 221                 //   provide for backwards-compatibility for older firmware, and to avoid
 222                 //   having to add another argument to CMD_EM410X_WRITE_TAG, we just store
 223                 //   the clock rate in bits 8-15 of the card value
 224                 card = (card & 0xFF) | (((uint64_t)clock << 8) & 0xFF00);
 225         }
 226         else if (card == 0)
 227                 PrintAndLog("Writing %s tag with UID 0x%010" PRIx64, "T5555", id, clock);
 228         else {
 229                 PrintAndLog("Error! Bad card type selected.\n");
 230                 return 0;
 231         }
 232
 233         UsbCommand c = {CMD_EM410X_WRITE_TAG, {card, (uint32_t)(id >> 32), (uint32_t)id}};
 234         SendCommand(&c);
 235         return 0;
 236 }
 237
 238 bool EM_EndParityTest(uint8_t *BitStream, size_t size, uint8_t rows, uint8_t cols, uint8_t pType)
 239 {
 240         if (rows*cols>size) return false;
 241         uint8_t colP=0;
 242         //assume last col is a parity and do not test
 243         for (uint8_t colNum = 0; colNum < cols-1; colNum++) {
 244                 for (uint8_t rowNum = 0; rowNum < rows; rowNum++) {
 245                         colP ^= BitStream[(rowNum*cols)+colNum];
 246                 }
 247                 if (colP != pType) return false;
 248         }
 249         return true;
 250 }
 251
 252 bool EM_ByteParityTest(uint8_t *BitStream, size_t size, uint8_t rows, uint8_t cols, uint8_t pType)
 253 {
 254         if (rows*cols>size) return false;
 255         uint8_t rowP=0;
 256         //assume last row is a parity row and do not test
 257         for (uint8_t rowNum = 0; rowNum < rows-1; rowNum++) {
 258                 for (uint8_t colNum = 0; colNum < cols; colNum++) {
 259                         rowP ^= BitStream[(rowNum*cols)+colNum];
 260                 }
 261                 if (rowP != pType) return false;
 262         }
 263         return true;
 264 }
 265
 266 uint32_t OutputEM4x50_Block(uint8_t *BitStream, size_t size, bool verbose, bool pTest)
 267 {
 268         if (size<45) return 0;
 269         uint32_t code = bytebits_to_byte(BitStream,8);
 270         code = code<<8 | bytebits_to_byte(BitStream+9,8);
 271         code = code<<8 | bytebits_to_byte(BitStream+18,8);
 272         code = code<<8 | bytebits_to_byte(BitStream+27,8);
 273         if (verbose || g_debugMode){
 274                 for (uint8_t i = 0; i<5; i++){
 275                         if (i == 4) PrintAndLog(""); //parity byte spacer
 276                         PrintAndLog("%d%d%d%d%d%d%d%d %d -> 0x%02x",
 277                             BitStream[i*9],
 278                             BitStream[i*9+1],
 279                             BitStream[i*9+2],
 280                             BitStream[i*9+3],
 281                             BitStream[i*9+4],
 282                             BitStream[i*9+5],
 283                             BitStream[i*9+6],
 284                             BitStream[i*9+7],
 285                             BitStream[i*9+8],
 286                             bytebits_to_byte(BitStream+i*9,8)
 287                         );
 288                 }
 289                 if (pTest)
 290                         PrintAndLog("Parity Passed");
 291                 else
 292                         PrintAndLog("Parity Failed");
 293         }
 294         return code;
 295 }
 296 /* Read the transmitted data of an EM4x50 tag
 297  * Format:
 298  *
 299  *  XXXXXXXX [row parity bit (even)] <- 8 bits plus parity
 300  *  XXXXXXXX [row parity bit (even)] <- 8 bits plus parity
 301  *  XXXXXXXX [row parity bit (even)] <- 8 bits plus parity
 302  *  XXXXXXXX [row parity bit (even)] <- 8 bits plus parity
 303  *  CCCCCCCC                         <- column parity bits
 304  *  0                                <- stop bit
 305  *  LW                               <- Listen Window
 306  *
 307  * This pattern repeats for every block of data being transmitted.
 308  * Transmission starts with two Listen Windows (LW - a modulated
 309  * pattern of 320 cycles each (32/32/128/64/64)).
 310  *
 311  * Note that this data may or may not be the UID. It is whatever data
 312  * is stored in the blocks defined in the control word First and Last
 313  * Word Read values. UID is stored in block 32.
 314  */
 315  //completed by Marshmellow
 316 int EM4x50Read(const char *Cmd, bool verbose)
 317 {
 318         uint8_t fndClk[] = {8,16,32,40,50,64,128};
 319         int clk = 0;
 320         int invert = 0;
 321         int tol = 0;
 322         int i, j, startblock, skip, block, start, end, low, high, minClk;
 323         bool complete = false;
 324         int tmpbuff[MAX_GRAPH_TRACE_LEN / 64];
 325         uint32_t Code[6];
 326         char tmp[6];
 327         char tmp2[20];
 328         int phaseoff;
 329         high = low = 0;
 330         memset(tmpbuff, 0, MAX_GRAPH_TRACE_LEN / 64);
 331
 332         // get user entry if any
 333         sscanf(Cmd, "%i %i", &clk, &invert);
 334
 335         // save GraphBuffer - to restore it later
 336         save_restoreGB(1);
 337
 338         // first get high and low values
 339         for (i = 0; i < GraphTraceLen; i++) {
 340                 if (GraphBuffer[i] > high)
 341                         high = GraphBuffer[i];
 342                 else if (GraphBuffer[i] < low)
 343                         low = GraphBuffer[i];
 344         }
 345
 346         i = 0;
 347         j = 0;
 348         minClk = 255;
 349         // get to first full low to prime loop and skip incomplete first pulse
 350         while ((GraphBuffer[i] < high) && (i < GraphTraceLen))
 351                 ++i;
 352         while ((GraphBuffer[i] > low) && (i < GraphTraceLen))
 353                 ++i;
 354         skip = i;
 355
 356         // populate tmpbuff buffer with pulse lengths
 357         while (i < GraphTraceLen) {
 358                 // measure from low to low
 359                 while ((GraphBuffer[i] > low) && (i < GraphTraceLen))
 360                         ++i;
 361                 start= i;
 362                 while ((GraphBuffer[i] < high) && (i < GraphTraceLen))
 363                         ++i;
 364                 while ((GraphBuffer[i] > low) && (i < GraphTraceLen))
 365                         ++i;
 366                 if (j>=(MAX_GRAPH_TRACE_LEN/64)) {
 367                         break;
 368                 }
 369                 tmpbuff[j++]= i - start;
 370                 if (i-start < minClk && i < GraphTraceLen) {
 371                         minClk = i - start;
 372                 }
 373         }
 374         // set clock
 375         if (!clk) {
 376                 for (uint8_t clkCnt = 0; clkCnt<7; clkCnt++) {
 377                         tol = fndClk[clkCnt]/8;
 378                         if (minClk >= fndClk[clkCnt]-tol && minClk <= fndClk[clkCnt]+1) {
 379                                 clk=fndClk[clkCnt];
 380                                 break;
 381                         }
 382                 }
 383                 if (!clk) return 0;
 384         } else tol = clk/8;
 385
 386         // look for data start - should be 2 pairs of LW (pulses of clk*3,clk*2)
 387         start = -1;
 388         for (i= 0; i < j - 4 ; ++i) {
 389                 skip += tmpbuff[i];
 390                 if (tmpbuff[i] >= clk*3-tol && tmpbuff[i] <= clk*3+tol)  //3 clocks
 391                         if (tmpbuff[i+1] >= clk*2-tol && tmpbuff[i+1] <= clk*2+tol)  //2 clocks
 392                                 if (tmpbuff[i+2] >= clk*3-tol && tmpbuff[i+2] <= clk*3+tol) //3 clocks
 393                                         if (tmpbuff[i+3] >= clk-tol)  //1.5 to 2 clocks - depends on bit following
 394                                         {
 395                                                 start= i + 4;
 396                                                 break;
 397                                         }
 398         }
 399         startblock = i + 4;
 400
 401         // skip over the remainder of LW
 402         skip += tmpbuff[i+1] + tmpbuff[i+2] + clk;
 403         if (tmpbuff[i+3]>clk)
 404                 phaseoff = tmpbuff[i+3]-clk;
 405         else
 406                 phaseoff = 0;
 407         // now do it again to find the end
 408         end = skip;
 409         for (i += 3; i < j - 4 ; ++i) {
 410                 end += tmpbuff[i];
 411                 if (tmpbuff[i] >= clk*3-tol && tmpbuff[i] <= clk*3+tol)  //3 clocks
 412                         if (tmpbuff[i+1] >= clk*2-tol && tmpbuff[i+1] <= clk*2+tol)  //2 clocks
 413                                 if (tmpbuff[i+2] >= clk*3-tol && tmpbuff[i+2] <= clk*3+tol) //3 clocks
 414                                         if (tmpbuff[i+3] >= clk-tol)  //1.5 to 2 clocks - depends on bit following
 415                                         {
 416                                                 complete= true;
 417                                                 break;
 418                                         }
 419         }
 420         end = i;
 421         // report back
 422         if (verbose || g_debugMode) {
 423                 if (start >= 0) {
 424                         PrintAndLog("\nNote: one block = 50 bits (32 data, 12 parity, 6 marker)");
 425                 }       else {
 426                         PrintAndLog("No data found!, clock tried:%d",clk);
 427                         PrintAndLog("Try again with more samples.");
 428                         PrintAndLog("  or after a 'data askedge' command to clean up the read");
 429                         return 0;
 430                 }
 431         } else if (start < 0) return 0;
 432         start = skip;
 433         snprintf(tmp2, sizeof(tmp2),"%d %d 1000 %d", clk, invert, clk*47);
 434         // get rid of leading crap
 435         snprintf(tmp, sizeof(tmp), "%i", skip);
 436         CmdLtrim(tmp);
 437         bool pTest;
 438         bool AllPTest = true;
 439         // now work through remaining buffer printing out data blocks
 440         block = 0;
 441         i = startblock;
 442         while (block < 6) {
 443                 if (verbose || g_debugMode) PrintAndLog("\nBlock %i:", block);
 444                 skip = phaseoff;
 445
 446                 // look for LW before start of next block
 447                 for ( ; i < j - 4 ; ++i) {
 448                         skip += tmpbuff[i];
 449                         if (tmpbuff[i] >= clk*3-tol && tmpbuff[i] <= clk*3+tol)
 450                                 if (tmpbuff[i+1] >= clk-tol)
 451                                         break;
 452                 }
 453                 if (i >= j-4) break; //next LW not found
 454                 skip += clk;
 455                 if (tmpbuff[i+1]>clk)
 456                         phaseoff = tmpbuff[i+1]-clk;
 457                 else
 458                         phaseoff = 0;
 459                 i += 2;
 460                 if (ASKDemod(tmp2, false, false, 1) < 1) {
 461                         save_restoreGB(0);
 462                         return 0;
 463                 }
 464                 //set DemodBufferLen to just one block
 465                 DemodBufferLen = skip/clk;
 466                 //test parities
 467                 pTest = EM_ByteParityTest(DemodBuffer,DemodBufferLen,5,9,0);
 468                 pTest &= EM_EndParityTest(DemodBuffer,DemodBufferLen,5,9,0);
 469                 AllPTest &= pTest;
 470                 //get output
 471                 Code[block] = OutputEM4x50_Block(DemodBuffer,DemodBufferLen,verbose, pTest);
 472                 if (g_debugMode) PrintAndLog("\nskipping %d samples, bits:%d", skip, skip/clk);
 473                 //skip to start of next block
 474                 snprintf(tmp,sizeof(tmp),"%i",skip);
 475                 CmdLtrim(tmp);
 476                 block++;
 477                 if (i >= end) break; //in case chip doesn't output 6 blocks
 478         }
 479         //print full code:
 480         if (verbose || g_debugMode || AllPTest){
 481                 if (!complete) {
 482                         PrintAndLog("*** Warning!");
 483                         PrintAndLog("Partial data - no end found!");
 484                         PrintAndLog("Try again with more samples.");
 485                 }
 486                 PrintAndLog("Found data at sample: %i - using clock: %i", start, clk);
 487                 end = block;
 488                 for (block=0; block < end; block++){
 489                         PrintAndLog("Block %d: %08x",block,Code[block]);
 490                 }
 491                 if (AllPTest) {
 492                         PrintAndLog("Parities Passed");
 493                 } else {
 494                         PrintAndLog("Parities Failed");
 495                         PrintAndLog("Try cleaning the read samples with 'data askedge'");
 496                 }
 497         }
 498
 499         //restore GraphBuffer
 500         save_restoreGB(0);
 501         return (int)AllPTest;
 502 }
 503
 504 int CmdEM4x50Read(const char *Cmd)
 505 {
 506         return EM4x50Read(Cmd, true);
 507 }
 508
 509 int CmdReadWord(const char *Cmd)
 510 {
 511         int Word = -1; //default to invalid word
 512         UsbCommand c;
 513
 514         sscanf(Cmd, "%d", &Word);
 515
 516         if ( (Word > 15) | (Word < 0) ) {
 517                 PrintAndLog("Word must be between 0 and 15");
 518                 return 1;
 519         }
 520
 521         PrintAndLog("Reading word %d", Word);
 522
 523         c.cmd = CMD_EM4X_READ_WORD;
 524         c.d.asBytes[0] = 0x0; //Normal mode
 525         c.arg[0] = 0;
 526         c.arg[1] = Word;
 527         c.arg[2] = 0;
 528         SendCommand(&c);
 529         return 0;
 530 }
 531
 532 int CmdReadWordPWD(const char *Cmd)
 533 {
 534         int Word = -1; //default to invalid word
 535         int Password = 0xFFFFFFFF; //default to blank password
 536         UsbCommand c;
 537
 538         sscanf(Cmd, "%d %x", &Word, &Password);
 539
 540         if ( (Word > 15) | (Word < 0) ) {
 541                 PrintAndLog("Word must be between 0 and 15");
 542                 return 1;
 543         }
 544
 545         PrintAndLog("Reading word %d with password %08X", Word, Password);
 546
 547         c.cmd = CMD_EM4X_READ_WORD;
 548         c.d.asBytes[0] = 0x1; //Password mode
 549         c.arg[0] = 0;
 550         c.arg[1] = Word;
 551         c.arg[2] = Password;
 552         SendCommand(&c);
 553         return 0;
 554 }
 555
 556 int CmdWriteWord(const char *Cmd)
 557 {
 558         int Word = 16; //default to invalid block
 559         int Data = 0xFFFFFFFF; //default to blank data
 560         UsbCommand c;
 561
 562         sscanf(Cmd, "%x %d", &Data, &Word);
 563
 564         if (Word > 15) {
 565                 PrintAndLog("Word must be between 0 and 15");
 566                 return 1;
 567         }
 568
 569         PrintAndLog("Writing word %d with data %08X", Word, Data);
 570
 571         c.cmd = CMD_EM4X_WRITE_WORD;
 572         c.d.asBytes[0] = 0x0; //Normal mode
 573         c.arg[0] = Data;
 574         c.arg[1] = Word;
 575         c.arg[2] = 0;
 576         SendCommand(&c);
 577         return 0;
 578 }
 579
 580 int CmdWriteWordPWD(const char *Cmd)
 581 {
 582         int Word = 16; //default to invalid word
 583         int Data = 0xFFFFFFFF; //default to blank data
 584         int Password = 0xFFFFFFFF; //default to blank password
 585         UsbCommand c;
 586
 587         sscanf(Cmd, "%x %d %x", &Data, &Word, &Password);
 588
 589         if (Word > 15) {
 590                 PrintAndLog("Word must be between 0 and 15");
 591                 return 1;
 592         }
 593
 594         PrintAndLog("Writing word %d with data %08X and password %08X", Word, Data, Password);
 595
 596         c.cmd = CMD_EM4X_WRITE_WORD;
 597         c.d.asBytes[0] = 0x1; //Password mode
 598         c.arg[0] = Data;
 599         c.arg[1] = Word;
 600         c.arg[2] = Password;
 601         SendCommand(&c);
 602         return 0;
 603 }
 604
 605 static command_t CommandTable[] =
 606 {
 607         {"help", CmdHelp, 1, "This help"},
 608         {"em410xdemod", CmdEMdemodASK, 0, "[findone] -- Extract ID from EM410x tag (option 0 for continuous loop, 1 for only 1 tag)"},
 609         {"em410xread", CmdEM410xRead, 1, "[clock rate] -- Extract ID from EM410x tag in GraphBuffer"},
 610         {"em410xsim", CmdEM410xSim, 0, "<UID> -- Simulate EM410x tag"},
 611         {"em410xwatch", CmdEM410xWatch, 0, "['h'] -- Watches for EM410x 125/134 kHz tags (option 'h' for 134)"},
 612         {"em410xspoof", CmdEM410xWatchnSpoof, 0, "['h'] --- Watches for EM410x 125/134 kHz tags, and replays them. (option 'h' for 134)" },
 613         {"em410xwrite", CmdEM410xWrite, 0, "<UID> <'0' T5555> <'1' T55x7> [clock rate] -- Write EM410x UID to T5555(Q5) or T55x7 tag, optionally setting clock rate"},
 614         {"em4x50read", CmdEM4x50Read, 1, "Extract data from EM4x50 tag"},
 615         {"readword", CmdReadWord, 1, "<Word> -- Read EM4xxx word data"},
 616         {"readwordPWD", CmdReadWordPWD, 1, "<Word> <Password> -- Read EM4xxx word data in password mode"},
 617         {"writeword", CmdWriteWord, 1, "<Data> <Word> -- Write EM4xxx word data"},
 618         {"writewordPWD", CmdWriteWordPWD, 1, "<Data> <Word> <Password> -- Write EM4xxx word data in password mode"},
 619         {NULL, NULL, 0, NULL}
 620 };
 621
 622 int CmdLFEM4X(const char *Cmd)
 623 {
 624         CmdsParse(CommandTable, Cmd);
 625         return 0;
 626 }
 627
 628 int CmdHelp(const char *Cmd)
 629 {
 630         CmdsHelp(CommandTable);
 631         return 0;
 632 }