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 "proxmark3.h"
  15 #include "ui.h"
  16 #include "cmdparser.h"
  17 #include "common.h"
  18 #include "util.h"
  19 #include "parity.h"
  20 #include "hitag2.h"
  21 #include "hitagS.h"
  22 #include "cmdmain.h"
  23
  24 static int CmdHelp(const char *Cmd);
  25
  26 size_t nbytes(size_t nbits) {
  27         return (nbits/8)+((nbits%8)>0);
  28 }
  29
  30 int CmdLFHitagList(const char *Cmd)
  31 {
  32         uint8_t *got = malloc(USB_CMD_DATA_SIZE);
  33
  34         // Query for the actual size of the trace
  35         UsbCommand response;
  36         GetFromBigBuf(got, USB_CMD_DATA_SIZE, 0, &response, -1, false);
  37         uint16_t traceLen = response.arg[2];
  38         if (traceLen > USB_CMD_DATA_SIZE) {
  39                 uint8_t *p = realloc(got, traceLen);
  40                 if (p == NULL) {
  41                         PrintAndLog("Cannot allocate memory for trace");
  42                         free(got);
  43                         return 2;
  44                 }
  45                 got = p;
  46                 GetFromBigBuf(got, traceLen, 0, NULL, -1, false);
  47         }
  48
  49         PrintAndLog("recorded activity (TraceLen = %d bytes):");
  50         PrintAndLog(" ETU     :nbits: who bytes");
  51         PrintAndLog("---------+-----+----+-----------");
  52
  53         int i = 0;
  54         int prev = -1;
  55         int len = strlen(Cmd);
  56
  57         char filename[FILE_PATH_SIZE]  = { 0x00 };
  58         FILE* pf = NULL;
  59
  60         if (len > FILE_PATH_SIZE)
  61                 len = FILE_PATH_SIZE;
  62         memcpy(filename, Cmd, len);
  63
  64         if (strlen(filename) > 0) {
  65                 if ((pf = fopen(filename,"wb")) == NULL) {
  66                         PrintAndLog("Error: Could not open file [%s]",filename);
  67                         return 1;
  68                 }
  69         }
  70
  71         for (;;) {
  72
  73                 if(i > traceLen) { break; }
  74
  75                 bool isResponse;
  76                 int timestamp = *((uint32_t *)(got+i));
  77                 if (timestamp & 0x80000000) {
  78                         timestamp &= 0x7fffffff;
  79                         isResponse = 1;
  80                 } else {
  81                         isResponse = 0;
  82                 }
  83
  84                 int parityBits = *((uint32_t *)(got+i+4));
  85                 // 4 bytes of additional information...
  86                 // maximum of 32 additional parity bit information
  87                 //
  88                 // TODO:
  89                 // at each quarter bit period we can send power level (16 levels)
  90                 // or each half bit period in 256 levels.
  91
  92                 int bits = got[i+8];
  93                 int len = nbytes(got[i+8]);
  94
  95                 if (len > 100) {
  96                   break;
  97                 }
  98                 if (i + len > traceLen) { break;}
  99
 100                 uint8_t *frame = (got+i+9);
 101
 102                 // Break and stick with current result if buffer was not completely full
 103                 if (frame[0] == 0x44 && frame[1] == 0x44 && frame[3] == 0x44) { break; }
 104
 105                 char line[1000] = "";
 106                 int j;
 107                 for (j = 0; j < len; j++) {
 108
 109                   //if((parityBits >> (len - j - 1)) & 0x01) {
 110                   if (isResponse && (oddparity8(frame[j]) != ((parityBits >> (len - j - 1)) & 0x01))) {
 111                         sprintf(line+(j*4), "%02x!  ", frame[j]);
 112                   }
 113                   else {
 114                         sprintf(line+(j*4), "%02x   ", frame[j]);
 115                   }
 116                 }
 117
 118                 PrintAndLog(" +%7d:  %3d: %s %s",
 119                         (prev < 0 ? 0 : (timestamp - prev)),
 120                         bits,
 121                         (isResponse ? "TAG" : "   "),
 122                         line);
 123
 124                 if (pf) {
 125                         fprintf(pf," +%7d:  %3d: %s %s\n",
 126                                 (prev < 0 ? 0 : (timestamp - prev)),
 127                                 bits,
 128                                 (isResponse ? "TAG" : "   "),
 129                                 line);
 130                 }
 131
 132                 prev = timestamp;
 133                 i += (len + 9);
 134         }
 135
 136         if (pf) {
 137                 fclose(pf);
 138                 PrintAndLog("Recorded activity succesfully written to file: %s", filename);
 139         }
 140
 141         free(got);
 142         return 0;
 143 }
 144
 145 int CmdLFHitagSnoop(const char *Cmd) {
 146   UsbCommand c = {CMD_SNOOP_HITAG};
 147   SendCommand(&c);
 148   return 0;
 149 }
 150
 151 int CmdLFHitagSim(const char *Cmd) {
 152
 153   UsbCommand c = {CMD_SIMULATE_HITAG};
 154         char filename[FILE_PATH_SIZE] = { 0x00 };
 155         FILE* pf;
 156         bool tag_mem_supplied;
 157         int len = strlen(Cmd);
 158         if (len > FILE_PATH_SIZE) len = FILE_PATH_SIZE;
 159         memcpy(filename, Cmd, len);
 160
 161         if (strlen(filename) > 0) {
 162                 if ((pf = fopen(filename,"rb+")) == NULL) {
 163                         PrintAndLog("Error: Could not open file [%s]",filename);
 164                         return 1;
 165                 }
 166                 tag_mem_supplied = true;
 167                 if (fread(c.d.asBytes,48,1,pf) == 0) {
 168       PrintAndLog("Error: File reading error");
 169       fclose(pf);
 170                         return 1;
 171     }
 172                 fclose(pf);
 173         } else {
 174                 tag_mem_supplied = false;
 175         }
 176
 177         // Does the tag comes with memory
 178         c.arg[0] = (uint32_t)tag_mem_supplied;
 179
 180   SendCommand(&c);
 181   return 0;
 182 }
 183
 184 int CmdLFHitagReader(const char *Cmd) {
 185         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)}};
 186         hitag_data* htd = (hitag_data*)c.d.asBytes;
 187         hitag_function htf = param_get32ex(Cmd,0,0,10);
 188
 189         switch (htf) {
 190                 case 01: { //RHTSF_CHALLENGE
 191                         c = (UsbCommand){ CMD_READ_HITAG_S };
 192                         num_to_bytes(param_get32ex(Cmd,1,0,16),4,htd->auth.NrAr);
 193                         num_to_bytes(param_get32ex(Cmd,2,0,16),4,htd->auth.NrAr+4);
 194                 } break;
 195                 case 02: { //RHTSF_KEY
 196                         c = (UsbCommand){ CMD_READ_HITAG_S };
 197                         num_to_bytes(param_get64ex(Cmd,1,0,16),6,htd->crypto.key);
 198                 } break;
 199                 case RHT2F_PASSWORD: {
 200                         num_to_bytes(param_get32ex(Cmd,1,0,16),4,htd->pwd.password);
 201                 } break;
 202                 case RHT2F_AUTHENTICATE: {
 203                         num_to_bytes(param_get32ex(Cmd,1,0,16),4,htd->auth.NrAr);
 204                         num_to_bytes(param_get32ex(Cmd,2,0,16),4,htd->auth.NrAr+4);
 205                 } break;
 206                 case RHT2F_CRYPTO: {
 207                         num_to_bytes(param_get64ex(Cmd,1,0,16),6,htd->crypto.key);
 208                         //                      num_to_bytes(param_get32ex(Cmd,2,0,16),4,htd->auth.NrAr+4);
 209                 } break;
 210                 case RHT2F_TEST_AUTH_ATTEMPTS: {
 211                         // No additional parameters needed
 212                 } break;
 213                 case RHT2F_UID_ONLY: {
 214                         // No additional parameters needed
 215                 } break;
 216                 default: {
 217                         PrintAndLog("\nError: unkown reader function %d",htf);
 218                         PrintAndLog("");
 219                         PrintAndLog("Usage: hitag reader <Reader Function #>");
 220                         PrintAndLog("Reader Functions:");
 221                         PrintAndLog(" HitagS (0*)");
 222                         PrintAndLog("  01 <nr> <ar> (Challenge) read all pages from a Hitag S tag");
 223                         PrintAndLog("  02 <key> (set to 0 if no authentication is needed) read all pages from a Hitag S tag");
 224                         PrintAndLog(" Hitag1 (1*)");
 225                         PrintAndLog(" Hitag2 (2*)");
 226                         PrintAndLog("  21 <password> (password mode)");
 227                         PrintAndLog("  22 <nr> <ar> (authentication)");
 228                         PrintAndLog("  23 <key> (authentication) key is in format: ISK high + ISK low");
 229                         PrintAndLog("  25 (test recorded authentications)");
 230                         PrintAndLog("  26 just read UID");
 231                         return 1;
 232                 } break;
 233         }
 234
 235         // Copy the hitag2 function into the first argument
 236         c.arg[0] = htf;
 237
 238         // Send the command to the proxmark
 239         clearCommandBuffer();
 240         SendCommand(&c);
 241
 242         UsbCommand resp;
 243         WaitForResponse(CMD_ACK,&resp);
 244
 245         // Check the return status, stored in the first argument
 246         if (resp.arg[0] == false) return 1;
 247
 248         uint32_t id = bytes_to_num(resp.d.asBytes,4);
 249
 250         if (htf == RHT2F_UID_ONLY){
 251                 PrintAndLog("Valid Hitag2 tag found - UID: %08x",id);
 252         } else {
 253                 char filename[256];
 254                 FILE* pf = NULL;
 255
 256                 sprintf(filename,"%08x_%04x.ht2",id,(rand() & 0xffff));
 257                 if ((pf = fopen(filename,"wb")) == NULL) {
 258                   PrintAndLog("Error: Could not open file [%s]",filename);
 259                   return 1;
 260                 }
 261
 262                 // Write the 48 tag memory bytes to file and finalize
 263                 fwrite(resp.d.asBytes,1,48,pf);
 264                 fclose(pf);
 265
 266                 PrintAndLog("Succesfully saved tag memory to [%s]",filename);
 267         }
 268
 269
 270         return 0;
 271 }
 272
 273
 274 int CmdLFHitagSimS(const char *Cmd) {
 275         UsbCommand c = { CMD_SIMULATE_HITAG_S };
 276         char filename[FILE_PATH_SIZE] = { 0x00 };
 277         FILE* pf;
 278         bool tag_mem_supplied;
 279         int len = strlen(Cmd);
 280         if (len > FILE_PATH_SIZE)
 281                 len = FILE_PATH_SIZE;
 282         memcpy(filename, Cmd, len);
 283
 284         if (strlen(filename) > 0) {
 285                 if ((pf = fopen(filename, "rb+")) == NULL) {
 286                         PrintAndLog("Error: Could not open file [%s]", filename);
 287                         return 1;
 288                 }
 289                 tag_mem_supplied = true;
 290                 if (fread(c.d.asBytes, 4*64, 1, pf) == 0) {
 291                         PrintAndLog("Error: File reading error");
 292                         fclose(pf);
 293                         return 1;
 294                 }
 295                 fclose(pf);
 296         } else {
 297                 tag_mem_supplied = false;
 298         }
 299
 300         // Does the tag comes with memory
 301         c.arg[0] = (uint32_t) tag_mem_supplied;
 302
 303         SendCommand(&c);
 304         return 0;
 305 }
 306
 307 int CmdLFHitagCheckChallenges(const char *Cmd) {
 308         UsbCommand c = { CMD_TEST_HITAGS_TRACES };
 309         char filename[FILE_PATH_SIZE] = { 0x00 };
 310         FILE* pf;
 311         bool file_given;
 312         int len = strlen(Cmd);
 313         if (len > FILE_PATH_SIZE) len = FILE_PATH_SIZE;
 314         memcpy(filename, Cmd, len);
 315
 316         if (strlen(filename) > 0) {
 317                 if ((pf = fopen(filename,"rb+")) == NULL) {
 318                         PrintAndLog("Error: Could not open file [%s]",filename);
 319                         return 1;
 320                 }
 321                 file_given = true;
 322                 if (fread(c.d.asBytes,8*60,1,pf) == 0) {
 323       PrintAndLog("Error: File reading error");
 324       fclose(pf);
 325                         return 1;
 326         }
 327                 fclose(pf);
 328         } else {
 329                 file_given = false;
 330         }
 331
 332         //file with all the challenges to try
 333         c.arg[0] = (uint32_t)file_given;
 334
 335   SendCommand(&c);
 336   return 0;
 337 }
 338
 339
 340 int CmdLFHitagWP(const char *Cmd) {
 341         UsbCommand c = { CMD_WR_HITAG_S };
 342         hitag_data* htd = (hitag_data*)c.d.asBytes;
 343         hitag_function htf = param_get32ex(Cmd,0,0,10);
 344         switch (htf) {
 345                 case 03: { //WHTSF_CHALLENGE
 346                         num_to_bytes(param_get64ex(Cmd,1,0,16),8,htd->auth.NrAr);
 347                         c.arg[2]= param_get32ex(Cmd, 2, 0, 10);
 348                         num_to_bytes(param_get32ex(Cmd,3,0,16),4,htd->auth.data);
 349                 } break;
 350                 case 04:
 351                 case 24:
 352                 { //WHTSF_KEY
 353                         num_to_bytes(param_get64ex(Cmd,1,0,16),6,htd->crypto.key);
 354                         c.arg[2]= param_get32ex(Cmd, 2, 0, 10);
 355                         num_to_bytes(param_get32ex(Cmd,3,0,16),4,htd->crypto.data);
 356
 357                 } break;
 358                 default: {
 359                         PrintAndLog("Error: unkown writer function %d",htf);
 360                         PrintAndLog("Hitag writer functions");
 361                         PrintAndLog(" HitagS (0*)");
 362                         PrintAndLog("  03 <nr,ar> (Challenge) <page> <byte0...byte3> write page on a Hitag S tag");
 363                         PrintAndLog("  04 <key> (set to 0 if no authentication is needed) <page> <byte0...byte3> write page on a Hitag S tag");
 364                         PrintAndLog(" Hitag1 (1*)");
 365                         PrintAndLog(" Hitag2 (2*)");
 366                         PrintAndLog("  24 <key> (set to 0 if no authentication is needed) <page> <byte0...byte3> write page on a Hitag S tag");
 367                         return 1;
 368                 } break;
 369         }
 370         // Copy the hitag function into the first argument
 371         c.arg[0] = htf;
 372
 373   // Send the command to the proxmark
 374   SendCommand(&c);
 375
 376   UsbCommand resp;
 377   WaitForResponse(CMD_ACK,&resp);
 378
 379   // Check the return status, stored in the first argument
 380   if (resp.arg[0] == false) return 1;
 381   return 0;
 382 }
 383
 384
 385 static command_t CommandTable[] =
 386 {
 387   {"help",              CmdHelp,           1, "This help"},
 388   {"list",              CmdLFHitagList,    1, "<outfile> List Hitag trace history"},
 389   {"reader",            CmdLFHitagReader,  1, "Act like a Hitag Reader"},
 390   {"sim",               CmdLFHitagSim,     1, "<infile> Simulate Hitag transponder"},
 391   {"snoop",             CmdLFHitagSnoop,   1, "Eavesdrop Hitag communication"},
 392   {"writer",            CmdLFHitagWP,      1, "Act like a Hitag Writer" },
 393   {"simS",              CmdLFHitagSimS,    1, "<hitagS.hts> Simulate HitagS transponder" },
 394   {"checkChallenges",   CmdLFHitagCheckChallenges,   1, "<challenges.cc> test all challenges" }, {
 395                                 NULL,NULL, 0, NULL }
 396 };
 397
 398 int CmdLFHitag(const char *Cmd)
 399 {
 400   CmdsParse(CommandTable, Cmd);
 401   return 0;
 402 }
 403
 404 int CmdHelp(const char *Cmd)
 405 {
 406   CmdsHelp(CommandTable);
 407   return 0;
 408 }