cvs.zerfleddert.de Git - proxmark3-svn/blob - client/cmdlfhitag.c

   1 //-----------------------------------------------------------------------------
   2 // Copyright (C) 2012 Roel Verdult
   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 Hitag support
   9 //-----------------------------------------------------------------------------
  10
  11 #include <stdio.h>
  12 #include <stdlib.h>
  13 #include <string.h>
  14 #include "data.h"
  15 #include "proxmark3.h"
  16 #include "ui.h"
  17 #include "cmdparser.h"
  18 #include "common.h"
  19 #include "util.h"
  20 #include "hitag2.h"
  21 #include "hitagS.h"
  22 #include "sleep.h"
  23 #include "cmdmain.h"
  24
  25 static int CmdHelp(const char *Cmd);
  26
  27 size_t nbytes(size_t nbits) {
  28         return (nbits/8)+((nbits%8)>0);
  29 }
  30
  31 int CmdLFHitagList(const char *Cmd)
  32 {
  33         uint8_t *got = malloc(USB_CMD_DATA_SIZE);
  34
  35         // Query for the actual size of the trace
  36         UsbCommand response;
  37         GetFromBigBuf(got, USB_CMD_DATA_SIZE, 0);
  38         WaitForResponse(CMD_ACK, &response);
  39         uint16_t traceLen = response.arg[2];
  40         if (traceLen > USB_CMD_DATA_SIZE) {
  41                 uint8_t *p = realloc(got, traceLen);
  42                 if (p == NULL) {
  43                         PrintAndLog("Cannot allocate memory for trace");
  44                         free(got);
  45                         return 2;
  46                 }
  47                 got = p;
  48                 GetFromBigBuf(got, traceLen, 0);
  49                 WaitForResponse(CMD_ACK,NULL);
  50         }
  51
  52         PrintAndLog("recorded activity (TraceLen = %d bytes):");
  53         PrintAndLog(" ETU     :nbits: who bytes");
  54         PrintAndLog("---------+-----+----+-----------");
  55
  56         int i = 0;
  57         int prev = -1;
  58         int len = strlen(Cmd);
  59
  60         char filename[FILE_PATH_SIZE]  = { 0x00 };
  61         FILE* pf = NULL;
  62
  63         if (len > FILE_PATH_SIZE)
  64                 len = FILE_PATH_SIZE;
  65         memcpy(filename, Cmd, len);
  66
  67         if (strlen(filename) > 0) {
  68                 if ((pf = fopen(filename,"wb")) == NULL) {
  69                         PrintAndLog("Error: Could not open file [%s]",filename);
  70                         return 1;
  71                 }
  72         }
  73
  74         for (;;) {
  75
  76                 if(i > traceLen) { break; }
  77
  78                 bool isResponse;
  79                 int timestamp = *((uint32_t *)(got+i));
  80                 if (timestamp & 0x80000000) {
  81                         timestamp &= 0x7fffffff;
  82                         isResponse = 1;
  83                 } else {
  84                         isResponse = 0;
  85                 }
  86
  87                 int parityBits = *((uint32_t *)(got+i+4));
  88                 // 4 bytes of additional information...
  89                 // maximum of 32 additional parity bit information
  90                 //
  91                 // TODO:
  92                 // at each quarter bit period we can send power level (16 levels)
  93                 // or each half bit period in 256 levels.
  94
  95                 int bits = got[i+8];
  96                 int len = nbytes(got[i+8]);
  97
  98                 if (len > 100) {
  99                   break;
 100                 }
 101                 if (i + len > traceLen) { break;}
 102
 103                 uint8_t *frame = (got+i+9);
 104
 105                 // Break and stick with current result if buffer was not completely full
 106                 if (frame[0] == 0x44 && frame[1] == 0x44 && frame[3] == 0x44) { break; }
 107
 108                 char line[1000] = "";
 109                 int j;
 110                 for (j = 0; j < len; j++) {
 111                   int oddparity = 0x01;
 112                   int k;
 113
 114                   for (k=0;k<8;k++) {
 115                         oddparity ^= (((frame[j] & 0xFF) >> k) & 0x01);
 116                   }
 117
 118                   //if((parityBits >> (len - j - 1)) & 0x01) {
 119                   if (isResponse && (oddparity != ((parityBits >> (len - j - 1)) & 0x01))) {
 120                         sprintf(line+(j*4), "%02x!  ", frame[j]);
 121                   }
 122                   else {
 123                         sprintf(line+(j*4), "%02x   ", frame[j]);
 124                   }
 125                 }
 126
 127                 PrintAndLog(" +%7d:  %3d: %s %s",
 128                         (prev < 0 ? 0 : (timestamp - prev)),
 129                         bits,
 130                         (isResponse ? "TAG" : "   "),
 131                         line);
 132
 133                 if (pf) {
 134                         fprintf(pf," +%7d:  %3d: %s %s\n",
 135                                 (prev < 0 ? 0 : (timestamp - prev)),
 136                                 bits,
 137                                 (isResponse ? "TAG" : "   "),
 138                                 line);
 139                 }
 140
 141                 prev = timestamp;
 142                 i += (len + 9);
 143         }
 144
 145         if (pf) {
 146                 fclose(pf);
 147                 PrintAndLog("Recorded activity succesfully written to file: %s", filename);
 148         }
 149
 150         free(got);
 151         return 0;
 152 }
 153
 154 int CmdLFHitagSnoop(const char *Cmd) {
 155   UsbCommand c = {CMD_SNOOP_HITAG};
 156   SendCommand(&c);
 157   return 0;
 158 }
 159
 160 int CmdLFHitagSim(const char *Cmd) {
 161
 162   UsbCommand c = {CMD_SIMULATE_HITAG};
 163         char filename[FILE_PATH_SIZE] = { 0x00 };
 164         FILE* pf;
 165         bool tag_mem_supplied;
 166         int len = strlen(Cmd);
 167         if (len > FILE_PATH_SIZE) len = FILE_PATH_SIZE;
 168         memcpy(filename, Cmd, len);
 169
 170         if (strlen(filename) > 0) {
 171                 if ((pf = fopen(filename,"rb+")) == NULL) {
 172                         PrintAndLog("Error: Could not open file [%s]",filename);
 173                         return 1;
 174                 }
 175                 tag_mem_supplied = true;
 176                 if (fread(c.d.asBytes,48,1,pf) == 0) {
 177       PrintAndLog("Error: File reading error");
 178       fclose(pf);
 179                         return 1;
 180     }
 181                 fclose(pf);
 182         } else {
 183                 tag_mem_supplied = false;
 184         }
 185
 186         // Does the tag comes with memory
 187         c.arg[0] = (uint32_t)tag_mem_supplied;
 188
 189   SendCommand(&c);
 190   return 0;
 191 }
 192
 193 int CmdLFHitagReader(const char *Cmd) {
 194         UsbCommand c = {CMD_READER_HITAG};//, {param_get32ex(Cmd,0,0,10),param_get32ex(Cmd,1,0,16),param_get32ex(Cmd,2,0,16),param_get32ex(Cmd,3,0,16)}};
 195         hitag_data* htd = (hitag_data*)c.d.asBytes;
 196         hitag_function htf = param_get32ex(Cmd,0,0,10);
 197
 198         switch (htf) {
 199                 case 01: { //RHTSF_CHALLENGE
 200                         c = (UsbCommand){ CMD_READ_HITAG_S };
 201                         num_to_bytes(param_get32ex(Cmd,1,0,16),4,htd->auth.NrAr);
 202                         num_to_bytes(param_get32ex(Cmd,2,0,16),4,htd->auth.NrAr+4);
 203                 } break;
 204                 case 02: { //RHTSF_KEY
 205                         c = (UsbCommand){ CMD_READ_HITAG_S };
 206                         num_to_bytes(param_get64ex(Cmd,1,0,16),6,htd->crypto.key);
 207                 } break;
 208                 case RHT2F_PASSWORD: {
 209                         num_to_bytes(param_get32ex(Cmd,1,0,16),4,htd->pwd.password);
 210                 } break;
 211                 case RHT2F_AUTHENTICATE: {
 212                         num_to_bytes(param_get32ex(Cmd,1,0,16),4,htd->auth.NrAr);
 213                         num_to_bytes(param_get32ex(Cmd,2,0,16),4,htd->auth.NrAr+4);
 214                 } break;
 215                 case RHT2F_CRYPTO: {
 216                         num_to_bytes(param_get64ex(Cmd,1,0,16),6,htd->crypto.key);
 217                         //                      num_to_bytes(param_get32ex(Cmd,2,0,16),4,htd->auth.NrAr+4);
 218                 } break;
 219                 case RHT2F_TEST_AUTH_ATTEMPTS: {
 220                         // No additional parameters needed
 221                 } break;
 222                 case RHT2F_UID_ONLY: {
 223                         // No additional parameters needed
 224                 } break;
 225                 default: {
 226                         PrintAndLog("\nError: unkown reader function %d",htf);
 227                         PrintAndLog("");
 228                         PrintAndLog("Usage: hitag reader <Reader Function #>");
 229                         PrintAndLog("Reader Functions:");
 230                         PrintAndLog(" HitagS (0*)");
 231                         PrintAndLog("  01 <nr> <ar> (Challenge) read all pages from a Hitag S tag");
 232                         PrintAndLog("  02 <key> (set to 0 if no authentication is needed) read all pages from a Hitag S tag");
 233                         PrintAndLog(" Hitag1 (1*)");
 234                         PrintAndLog(" Hitag2 (2*)");
 235                         PrintAndLog("  21 <password> (password mode)");
 236                         PrintAndLog("  22 <nr> <ar> (authentication)");
 237                         PrintAndLog("  23 <key> (authentication) key is in format: ISK high + ISK low");
 238                         PrintAndLog("  25 (test recorded authentications)");
 239                         PrintAndLog("  26 just read UID");
 240                         return 1;
 241                 } break;
 242         }
 243
 244         // Copy the hitag2 function into the first argument
 245         c.arg[0] = htf;
 246
 247         // Send the command to the proxmark
 248         SendCommand(&c);
 249
 250         UsbCommand resp;
 251         WaitForResponse(CMD_ACK,&resp);
 252
 253         // Check the return status, stored in the first argument
 254         if (resp.arg[0] == false) return 1;
 255
 256         uint32_t id = bytes_to_num(resp.d.asBytes,4);
 257
 258         if (htf == RHT2F_UID_ONLY){
 259                 PrintAndLog("Valid Hitag2 tag found - UID: %08x",id);
 260         } else {
 261                 char filename[256];
 262                 FILE* pf = NULL;
 263
 264                 sprintf(filename,"%08x_%04x.ht2",id,(rand() & 0xffff));
 265                 if ((pf = fopen(filename,"wb")) == NULL) {
 266                   PrintAndLog("Error: Could not open file [%s]",filename);
 267                   return 1;
 268                 }
 269
 270                 // Write the 48 tag memory bytes to file and finalize
 271                 fwrite(resp.d.asBytes,1,48,pf);
 272                 fclose(pf);
 273
 274                 PrintAndLog("Succesfully saved tag memory to [%s]",filename);
 275         }
 276
 277
 278         return 0;
 279 }
 280
 281
 282 int CmdLFHitagSimS(const char *Cmd) {
 283         UsbCommand c = { CMD_SIMULATE_HITAG_S };
 284         char filename[FILE_PATH_SIZE] = { 0x00 };
 285         FILE* pf;
 286         bool tag_mem_supplied;
 287         int len = strlen(Cmd);
 288         if (len > FILE_PATH_SIZE)
 289                 len = FILE_PATH_SIZE;
 290         memcpy(filename, Cmd, len);
 291
 292         if (strlen(filename) > 0) {
 293                 if ((pf = fopen(filename, "rb+")) == NULL) {
 294                         PrintAndLog("Error: Could not open file [%s]", filename);
 295                         return 1;
 296                 }
 297                 tag_mem_supplied = true;
 298                 if (fread(c.d.asBytes, 4*64, 1, pf) == 0) {
 299                         PrintAndLog("Error: File reading error");
 300                         fclose(pf);
 301                         return 1;
 302                 }
 303                 fclose(pf);
 304         } else {
 305                 tag_mem_supplied = false;
 306         }
 307
 308         // Does the tag comes with memory
 309         c.arg[0] = (uint32_t) tag_mem_supplied;
 310
 311         SendCommand(&c);
 312         return 0;
 313 }
 314
 315 int CmdLFHitagCheckChallenges(const char *Cmd) {
 316         UsbCommand c = { CMD_TEST_HITAGS_TRACES };
 317         char filename[FILE_PATH_SIZE] = { 0x00 };
 318         FILE* pf;
 319         bool file_given;
 320         int len = strlen(Cmd);
 321         if (len > FILE_PATH_SIZE) len = FILE_PATH_SIZE;
 322         memcpy(filename, Cmd, len);
 323
 324         if (strlen(filename) > 0) {
 325                 if ((pf = fopen(filename,"rb+")) == NULL) {
 326                         PrintAndLog("Error: Could not open file [%s]",filename);
 327                         return 1;
 328                 }
 329                 file_given = true;
 330                 if (fread(c.d.asBytes,8*60,1,pf) == 0) {
 331       PrintAndLog("Error: File reading error");
 332       fclose(pf);
 333                         return 1;
 334         }
 335                 fclose(pf);
 336         } else {
 337                 file_given = false;
 338         }
 339
 340         //file with all the challenges to try
 341         c.arg[0] = (uint32_t)file_given;
 342
 343   SendCommand(&c);
 344   return 0;
 345 }
 346
 347
 348 int CmdLFHitagWP(const char *Cmd) {
 349         UsbCommand c = { CMD_WR_HITAG_S };
 350         hitag_data* htd = (hitag_data*)c.d.asBytes;
 351         hitag_function htf = param_get32ex(Cmd,0,0,10);
 352         switch (htf) {
 353                 case 03: { //WHTSF_CHALLENGE
 354                         num_to_bytes(param_get64ex(Cmd,1,0,16),8,htd->auth.NrAr);
 355                         c.arg[2]= param_get32ex(Cmd, 2, 0, 10);
 356                         num_to_bytes(param_get32ex(Cmd,3,0,16),4,htd->auth.data);
 357                 } break;
 358                 case 04: { //WHTSF_KEY
 359                         num_to_bytes(param_get64ex(Cmd,1,0,16),6,htd->crypto.key);
 360                         c.arg[2]= param_get32ex(Cmd, 2, 0, 10);
 361                         num_to_bytes(param_get32ex(Cmd,3,0,16),4,htd->crypto.data);
 362
 363                 } break;
 364                 default: {
 365                         PrintAndLog("Error: unkown writer function %d",htf);
 366                         PrintAndLog("Hitag writer functions");
 367                         PrintAndLog(" HitagS (0*)");
 368                         PrintAndLog("  03 <nr,ar> (Challenge) <page> <byte0...byte3> write page on a Hitag S tag");
 369                         PrintAndLog("  04 <key> (set to 0 if no authentication is needed) <page> <byte0...byte3> write page on a Hitag S tag");
 370                         PrintAndLog(" Hitag1 (1*)");
 371                         PrintAndLog(" Hitag2 (2*)");
 372                         return 1;
 373                 } break;
 374         }
 375         // Copy the hitag function into the first argument
 376         c.arg[0] = htf;
 377
 378   // Send the command to the proxmark
 379   SendCommand(&c);
 380
 381   UsbCommand resp;
 382   WaitForResponse(CMD_ACK,&resp);
 383
 384   // Check the return status, stored in the first argument
 385   if (resp.arg[0] == false) return 1;
 386   return 0;
 387 }
 388
 389
 390 static command_t CommandTable[] =
 391 {
 392   {"help",              CmdHelp,           1, "This help"},
 393   {"list",              CmdLFHitagList,    1, "<outfile> List Hitag trace history"},
 394   {"reader",            CmdLFHitagReader,  1, "Act like a Hitag Reader"},
 395   {"sim",               CmdLFHitagSim,     1, "<infile> Simulate Hitag transponder"},
 396   {"snoop",             CmdLFHitagSnoop,   1, "Eavesdrop Hitag communication"},
 397   {"writer",            CmdLFHitagWP,      1, "Act like a Hitag Writer" },
 398   {"simS",              CmdLFHitagSimS,    1, "<hitagS.hts> Simulate HitagS transponder" },
 399   {"checkChallenges",   CmdLFHitagCheckChallenges,   1, "<challenges.cc> test all challenges" }, {
 400                                 NULL,NULL, 0, NULL }
 401 };
 402
 403 int CmdLFHitag(const char *Cmd)
 404 {
 405   CmdsParse(CommandTable, Cmd);
 406   return 0;
 407 }
 408
 409 int CmdHelp(const char *Cmd)
 410 {
 411   CmdsHelp(CommandTable);
 412   return 0;
 413 }