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                 default: {
 223                         PrintAndLog("Error: unkown reader function %d",htf);
 224                         PrintAndLog("Hitag reader functions");
 225                         PrintAndLog(" HitagS (0*)");
 226                         PrintAndLog("  01 <nr> <ar> (Challenge) read all pages from a Hitag S tag");
 227                         PrintAndLog("  02 <key> (set to 0 if no authentication is needed) read all pages from a Hitag S tag");
 228                         PrintAndLog(" Hitag1 (1*)");
 229                         PrintAndLog(" Hitag2 (2*)");
 230                         PrintAndLog("  21 <password> (password mode)");
 231                         PrintAndLog("  22 <nr> <ar> (authentication)");
 232                         PrintAndLog("  23 <key> (authentication) key is in format: ISK high + ISK low");
 233                         PrintAndLog("  25 (test recorded authentications)");
 234                         return 1;
 235                 } break;
 236         }
 237
 238         // Copy the hitag2 function into the first argument
 239         c.arg[0] = htf;
 240
 241   // Send the command to the proxmark
 242   SendCommand(&c);
 243
 244   UsbCommand resp;
 245   WaitForResponse(CMD_ACK,&resp);
 246
 247   // Check the return status, stored in the first argument
 248   if (resp.arg[0] == false) return 1;
 249
 250   uint32_t id = bytes_to_num(resp.d.asBytes,4);
 251   char filename[256];
 252   FILE* pf = NULL;
 253
 254   sprintf(filename,"%08x_%04x.ht2",id,(rand() & 0xffff));
 255   if ((pf = fopen(filename,"wb")) == NULL) {
 256     PrintAndLog("Error: Could not open file [%s]",filename);
 257     return 1;
 258   }
 259
 260   // Write the 48 tag memory bytes to file and finalize
 261   fwrite(resp.d.asBytes,1,48,pf);
 262   fclose(pf);
 263
 264   PrintAndLog("Succesfully saved tag memory to [%s]",filename);
 265
 266   return 0;
 267 }
 268
 269
 270 int CmdLFHitagSimS(const char *Cmd) {
 271         UsbCommand c = { CMD_SIMULATE_HITAG_S };
 272         char filename[FILE_PATH_SIZE] = { 0x00 };
 273         FILE* pf;
 274         bool tag_mem_supplied;
 275         int len = strlen(Cmd);
 276         if (len > FILE_PATH_SIZE)
 277                 len = FILE_PATH_SIZE;
 278         memcpy(filename, Cmd, len);
 279
 280         if (strlen(filename) > 0) {
 281                 if ((pf = fopen(filename, "rb+")) == NULL) {
 282                         PrintAndLog("Error: Could not open file [%s]", filename);
 283                         return 1;
 284                 }
 285                 tag_mem_supplied = true;
 286                 if (fread(c.d.asBytes, 4*64, 1, pf) == 0) {
 287                         PrintAndLog("Error: File reading error");
 288                         fclose(pf);
 289                         return 1;
 290                 }
 291                 fclose(pf);
 292         } else {
 293                 tag_mem_supplied = false;
 294         }
 295
 296         // Does the tag comes with memory
 297         c.arg[0] = (uint32_t) tag_mem_supplied;
 298
 299         SendCommand(&c);
 300         return 0;
 301 }
 302
 303 int CmdLFHitagCheckChallenges(const char *Cmd) {
 304         UsbCommand c = { CMD_TEST_HITAGS_TRACES };
 305         char filename[FILE_PATH_SIZE] = { 0x00 };
 306         FILE* pf;
 307         bool file_given;
 308         int len = strlen(Cmd);
 309         if (len > FILE_PATH_SIZE) len = FILE_PATH_SIZE;
 310         memcpy(filename, Cmd, len);
 311
 312         if (strlen(filename) > 0) {
 313                 if ((pf = fopen(filename,"rb+")) == NULL) {
 314                         PrintAndLog("Error: Could not open file [%s]",filename);
 315                         return 1;
 316                 }
 317                 file_given = true;
 318                 if (fread(c.d.asBytes,8*60,1,pf) == 0) {
 319       PrintAndLog("Error: File reading error");
 320       fclose(pf);
 321                         return 1;
 322         }
 323                 fclose(pf);
 324         } else {
 325                 file_given = false;
 326         }
 327
 328         //file with all the challenges to try
 329         c.arg[0] = (uint32_t)file_given;
 330
 331   SendCommand(&c);
 332   return 0;
 333 }
 334
 335
 336 int CmdLFHitagWP(const char *Cmd) {
 337         UsbCommand c = { CMD_WR_HITAG_S };
 338         hitag_data* htd = (hitag_data*)c.d.asBytes;
 339         hitag_function htf = param_get32ex(Cmd,0,0,10);
 340         switch (htf) {
 341                 case 03: { //WHTSF_CHALLENGE
 342                         num_to_bytes(param_get64ex(Cmd,1,0,16),8,htd->auth.NrAr);
 343                         c.arg[2]= param_get32ex(Cmd, 2, 0, 10);
 344                         num_to_bytes(param_get32ex(Cmd,3,0,16),4,htd->auth.data);
 345                 } break;
 346                 case 04: { //WHTSF_KEY
 347                         num_to_bytes(param_get64ex(Cmd,1,0,16),6,htd->crypto.key);
 348                         c.arg[2]= param_get32ex(Cmd, 2, 0, 10);
 349                         num_to_bytes(param_get32ex(Cmd,3,0,16),4,htd->crypto.data);
 350
 351                 } break;
 352                 default: {
 353                         PrintAndLog("Error: unkown writer function %d",htf);
 354                         PrintAndLog("Hitag writer functions");
 355                         PrintAndLog(" HitagS (0*)");
 356                         PrintAndLog("  03 <nr,ar> (Challenge) <page> <byte0...byte3> write page on a Hitag S tag");
 357                         PrintAndLog("  04 <key> (set to 0 if no authentication is needed) <page> <byte0...byte3> write page on a Hitag S tag");
 358                         PrintAndLog(" Hitag1 (1*)");
 359                         PrintAndLog(" Hitag2 (2*)");
 360                         return 1;
 361                 } break;
 362         }
 363         // Copy the hitag function into the first argument
 364         c.arg[0] = htf;
 365
 366   // Send the command to the proxmark
 367   SendCommand(&c);
 368
 369   UsbCommand resp;
 370   WaitForResponse(CMD_ACK,&resp);
 371
 372   // Check the return status, stored in the first argument
 373   if (resp.arg[0] == false) return 1;
 374   return 0;
 375 }
 376
 377
 378 static command_t CommandTable[] =
 379 {
 380   {"help",              CmdHelp,           1, "This help"},
 381   {"list",              CmdLFHitagList,    1, "<outfile> List Hitag trace history"},
 382   {"reader",            CmdLFHitagReader,  1, "Act like a Hitag Reader"},
 383   {"sim",               CmdLFHitagSim,     1, "<infile> Simulate Hitag transponder"},
 384   {"snoop",             CmdLFHitagSnoop,   1, "Eavesdrop Hitag communication"},
 385   {"writer",            CmdLFHitagWP,      1, "Act like a Hitag Writer" },
 386   {"simS",              CmdLFHitagSimS,    1, "<hitagS.hts> Simulate HitagS transponder" },
 387   {"checkChallenges",   CmdLFHitagCheckChallenges,   1, "<challenges.cc> test all challenges" }, {
 388                                 NULL,NULL, 0, NULL }
 389 };
 390
 391 int CmdLFHitag(const char *Cmd)
 392 {
 393   CmdsParse(CommandTable, Cmd);
 394   return 0;
 395 }
 396
 397 int CmdHelp(const char *Cmd)
 398 {
 399   CmdsHelp(CommandTable);
 400   return 0;
 401 }