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