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

   1 //-----------------------------------------------------------------------------
   2 //
   3 // This code is licensed to you under the terms of the GNU GPL, version 2 or,
   4 // at your option, any later version. See the LICENSE.txt file for the text of
   5 // the license.
   6 //-----------------------------------------------------------------------------
   7 // Low frequency fdx-b tag commands
   8 //-----------------------------------------------------------------------------
   9
  10 #include "cmdlffdx.h"
  11
  12 #include <inttypes.h>
  13 #include "proxmark3.h"
  14 #include "ui.h"         // for PrintAndLog
  15 #include "util.h"
  16 #include "cmdparser.h"
  17 #include "cmddata.h"
  18 #include "cmdmain.h"
  19 #include "cmdlf.h"
  20 #include "crc16.h"
  21 #include "protocols.h"
  22 #include "lfdemod.h"
  23
  24 /*
  25         FDX-B ISO11784/85 demod  (aka animal tag)  BIPHASE, inverted, rf/32,  with preamble of 00000000001 (128bits)
  26         8 databits + 1 parity (1)
  27         CIITT 16 checksum
  28         NATIONAL CODE, ICAR database
  29         COUNTRY CODE (ISO3166) or http://cms.abvma.ca/uploads/ManufacturersISOsandCountryCodes.pdf
  30         FLAG (animal/non-animal)
  31
  32         38 IDbits
  33         10 country code
  34         1 extra app bit
  35         14 reserved bits
  36         1 animal bit
  37         16 ccitt CRC chksum over 64bit ID CODE.
  38         24 appli bits.
  39
  40         sample: 985121004515220  [ 37FF65B88EF94 ]
  41 */
  42
  43 static int CmdHelp(const char *Cmd);
  44
  45 int usage_lf_fdx_clone(void){
  46         PrintAndLog("Clone a FDX-B animal tag to a T55x7 tag.");
  47         PrintAndLog("Usage: lf animal clone [h] <country id> <animal id> <Q5>");
  48         PrintAndLog("Options:");
  49         PrintAndLog("      h            : This help");
  50         PrintAndLog("      <country id> : Country id");
  51         PrintAndLog("      <animal id>  : Animal id");
  52         // has extended data?
  53         //reserved/rfu
  54         //is animal tag
  55         // extended data
  56         PrintAndLog("      <Q5>        : Specify write to Q5 (t5555 instead of t55x7)");
  57         PrintAndLog("");
  58         PrintAndLog("Sample: lf animal clone 999 112233");
  59         return 0;
  60 }
  61
  62 int usage_lf_fdx_sim(void) {
  63         PrintAndLog("Enables simulation of FDX-B animal tag");
  64         PrintAndLog("Simulation runs until the button is pressed or another USB command is issued.");
  65         PrintAndLog("");
  66         PrintAndLog("Usage:  lf animal sim [h] <country id> <animal id>");
  67         PrintAndLog("Options:");
  68         PrintAndLog("      h            : This help");
  69         PrintAndLog("      <country id> : Country ID");
  70         PrintAndLog("      <animal id>  : Animal ID");
  71         PrintAndLog("");
  72         PrintAndLog("Sample: lf animal sim 999 112233");
  73         return 0;
  74 }
  75 // clearing the topbit needed for the preambl detection.
  76 static void verify_values(uint32_t countryid, uint64_t animalid){
  77         if ((animalid & 0x3FFFFFFFFF) != animalid) {
  78                 animalid &= 0x3FFFFFFFFF;
  79                 PrintAndLog("Animal ID Truncated to 38bits: %"PRIx64, animalid);
  80         }
  81         if ( (countryid & 0x3ff) != countryid ) {
  82                 countryid &= 0x3ff;
  83                 PrintAndLog("Country ID Truncated to 10bits: %03d", countryid);
  84         }
  85 }
  86
  87 int getFDXBits(uint64_t national_id, uint16_t country, uint8_t isanimal, uint8_t isextended, uint32_t extended, uint8_t *bits) {
  88
  89         // 128bits
  90         // every 9th bit is 0x01, but we can just fill the rest with 0x01 and overwrite
  91         memset(bits, 0x01, 128);
  92
  93         // add preamble ten 0x00 and one 0x01
  94         memset(bits, 0x00, 10);
  95
  96         // add reserved
  97         num_to_bytebitsLSBF(0x00, 7, bits + 66);
  98         num_to_bytebitsLSBF(0x00 >> 7, 7, bits + 74);
  99
 100         // add animal flag - OK
 101         bits[65] = isanimal;
 102
 103         // add extended flag - OK
 104         bits[81] = isextended;
 105
 106         // add national code 40bits - OK
 107         num_to_bytebitsLSBF(national_id >> 0, 8, bits+11);
 108         num_to_bytebitsLSBF(national_id >> 8, 8, bits+20);
 109         num_to_bytebitsLSBF(national_id >> 16, 8, bits+29);
 110         num_to_bytebitsLSBF(national_id >> 24, 8, bits+38);
 111         num_to_bytebitsLSBF(national_id >> 32, 6, bits+47);
 112
 113         // add country code - OK
 114         num_to_bytebitsLSBF(country >> 0, 2, bits+53);
 115         num_to_bytebitsLSBF(country >> 2, 8, bits+56);
 116
 117         // add crc-16 - OK
 118         uint8_t raw[8];
 119         for (uint8_t i=0; i<8; ++i)
 120                 raw[i] = bytebits_to_byte(bits + 11 + i * 9, 8);
 121
 122         uint16_t crc = crc16_ccitt_kermit(raw, 8);
 123         num_to_bytebitsLSBF(crc >> 0, 8, bits+83);
 124         num_to_bytebitsLSBF(crc >> 8, 8, bits+92);
 125
 126         // extended data - OK
 127         num_to_bytebitsLSBF( extended >> 0 , 8, bits+101);
 128         num_to_bytebitsLSBF( extended >> 8 , 8, bits+110);
 129         num_to_bytebitsLSBF( extended >> 16, 8, bits+119);
 130         return 1;
 131 }
 132
 133 int CmdFdxDemod(const char *Cmd){
 134
 135         //Differential Biphase / di-phase (inverted biphase)
 136         //get binary from ask wave
 137         if (!ASKbiphaseDemod("0 32 1 0", FALSE)) {
 138                 if (g_debugMode) PrintAndLog("DEBUG: Error - FDX-B ASKbiphaseDemod failed");
 139                 return 0;
 140         }
 141         size_t size = DemodBufferLen;
 142         int preambleIndex = FDXBdemodBI(DemodBuffer, &size);
 143         if (preambleIndex < 0){
 144                 if (g_debugMode){
 145                         if (preambleIndex == -1)
 146                                 PrintAndLog("DEBUG: Error - FDX-B too few bits found");
 147                         else if (preambleIndex == -2)
 148                                 PrintAndLog("DEBUG: Error - FDX-B preamble not found");
 149                         else if (preambleIndex == -3)
 150                                 PrintAndLog("DEBUG: Error - FDX-B Size not correct: %d", size);
 151                         else
 152                                 PrintAndLog("DEBUG: Error - FDX-B ans: %d", preambleIndex);
 153                 }
 154                 return 0;
 155         }
 156
 157         // set and leave DemodBuffer intact
 158         setDemodBuf(DemodBuffer, 128, preambleIndex);
 159         uint8_t bits_no_spacer[117];
 160         memcpy(bits_no_spacer, DemodBuffer + 11, 117);
 161
 162         // remove marker bits (1's every 9th digit after preamble) (pType = 2)
 163         size = removeParity(bits_no_spacer, 0, 9, 2, 117);
 164         if ( size != 104 ) {
 165                 if (g_debugMode) PrintAndLog("DEBUG: Error removeParity:: %d", size);
 166                 return 0;
 167         }
 168
 169         //got a good demod
 170         uint64_t NationalCode = ((uint64_t)(bytebits_to_byteLSBF(bits_no_spacer+32,6)) << 32) | bytebits_to_byteLSBF(bits_no_spacer,32);
 171         uint32_t countryCode = bytebits_to_byteLSBF(bits_no_spacer+38,10);
 172         uint8_t dataBlockBit = bits_no_spacer[48];
 173         uint32_t reservedCode = bytebits_to_byteLSBF(bits_no_spacer+49,14);
 174         uint8_t animalBit = bits_no_spacer[63];
 175         uint32_t crc16 = bytebits_to_byteLSBF(bits_no_spacer+64,16);
 176         uint32_t extended = bytebits_to_byteLSBF(bits_no_spacer+80,24);
 177
 178         uint64_t rawid = ((uint64_t)bytebits_to_byte(bits_no_spacer,32)<<32) | bytebits_to_byte(bits_no_spacer+32,32);
 179         uint8_t raw[8];
 180         num_to_bytes(rawid, 8, raw);
 181
 182         if (g_debugMode) {
 183                 PrintAndLog("DEBUG: bits_no_spacer:\n%s",sprint_bin_break(bits_no_spacer,size,16));
 184                 PrintAndLog("DEBUG: Start marker %d;   Size %d", preambleIndex, size);
 185                 PrintAndLog("DEBUG: Raw ID Hex: %s", sprint_hex(raw,8));
 186         }
 187
 188         uint16_t calcCrc = crc16_ccitt_kermit(raw, 8);
 189         PrintAndLog("\nFDX-B / ISO 11784/5 Animal Tag ID Found:");
 190         PrintAndLog("Animal ID:     %04u-%012" PRIu64, countryCode, NationalCode);
 191         PrintAndLog("National Code: %012" PRIu64, NationalCode);
 192         PrintAndLog("CountryCode:   %04u", countryCode);
 193         PrintAndLog("Reserved Code: %u", reservedCode);
 194         PrintAndLog("Animal Tag:    %s", animalBit ? "True" : "False");
 195         PrintAndLog("Has Extended:  %s [0x%X]", dataBlockBit ? "True" : "False", extended);
 196         PrintAndLog("CRC:           0x%04X - 0x%04X - [%s]\n", crc16, calcCrc, (calcCrc == crc16) ? "Passed" : "Failed");
 197
 198         // set block 0 for later
 199         //g_DemodConfig = T55x7_MODULATION_DIPHASE | T55x7_BITRATE_RF_32 | 4 << T55x7_MAXBLOCK_SHIFT;
 200         return 1;
 201 }
 202
 203 int CmdFdxRead(const char *Cmd) {
 204         CmdLFRead("s");
 205         getSamples("10000", TRUE);
 206         return CmdFdxDemod(Cmd);
 207 }
 208
 209 int CmdFdxClone(const char *Cmd) {
 210
 211         uint32_t countryid = 0;
 212         uint64_t animalid = 0;
 213         uint32_t blocks[5] = {T55x7_MODULATION_DIPHASE | T55x7_BITRATE_RF_32 | 4 << T55x7_MAXBLOCK_SHIFT, 0, 0, 0, 0};
 214         uint8_t bits[128];
 215         uint8_t *bs = bits;
 216         memset(bs, 0, sizeof(bits));
 217
 218         char cmdp = param_getchar(Cmd, 0);
 219         if (strlen(Cmd) == 0 || cmdp == 'h' || cmdp == 'H') return usage_lf_fdx_clone();
 220
 221         countryid = param_get32ex(Cmd, 0, 0, 10);
 222         animalid = param_get64ex(Cmd, 1, 0, 10);
 223
 224         //Q5
 225         if (param_getchar(Cmd, 2) == 'Q' || param_getchar(Cmd, 2) == 'q') {
 226                 //t5555 (Q5) BITRATE = (RF-2)/2 (iceman)
 227                 blocks[0] = T5555_MODULATION_BIPHASE | T5555_INVERT_OUTPUT | ((32-2)>>1) << T5555_BITRATE_SHIFT | 4 << T5555_MAXBLOCK_SHIFT;
 228         }
 229
 230         verify_values(countryid, animalid);
 231
 232         // getFDXBits(uint64_t national_id, uint16_t country, uint8_t isanimal, uint8_t isextended, uint32_t extended, uint8_t *bits)
 233         if ( !getFDXBits(animalid, countryid, 1, 0, 0, bs)) {
 234                 PrintAndLog("Error with tag bitstream generation.");
 235                 return 1;
 236         }
 237
 238         // convert from bit stream to block data
 239         blocks[1] = bytebits_to_byte(bs,32);
 240         blocks[2] = bytebits_to_byte(bs+32,32);
 241         blocks[3] = bytebits_to_byte(bs+64,32);
 242         blocks[4] = bytebits_to_byte(bs+96,32);
 243
 244         PrintAndLog("Preparing to clone FDX-B to T55x7 with animal ID: %04u-%"PRIu64, countryid, animalid);
 245         PrintAndLog("Blk | Data ");
 246         PrintAndLog("----+------------");
 247         PrintAndLog(" 00 | 0x%08x", blocks[0]);
 248         PrintAndLog(" 01 | 0x%08x", blocks[1]);
 249         PrintAndLog(" 02 | 0x%08x", blocks[2]);
 250         PrintAndLog(" 03 | 0x%08x", blocks[3]);
 251         PrintAndLog(" 04 | 0x%08x", blocks[4]);
 252
 253         UsbCommand resp;
 254         UsbCommand c = {CMD_T55XX_WRITE_BLOCK, {0,0,0}};
 255
 256         for (int i = 4; i >= 0; --i) {
 257                 c.arg[0] = blocks[i];
 258                 c.arg[1] = i;
 259                 clearCommandBuffer();
 260                 SendCommand(&c);
 261                 if (!WaitForResponseTimeout(CMD_ACK, &resp, T55XX_WRITE_TIMEOUT)){
 262                         PrintAndLog("Error occurred, device did not respond during write operation.");
 263                         return -1;
 264                 }
 265         }
 266         return 0;
 267 }
 268
 269 int CmdFdxSim(const char *Cmd) {
 270         uint32_t countryid = 0;
 271         uint64_t animalid = 0;
 272
 273         char cmdp = param_getchar(Cmd, 0);
 274         if (strlen(Cmd) == 0 || cmdp == 'h' || cmdp == 'H') return usage_lf_fdx_sim();
 275
 276         countryid = param_get32ex(Cmd, 0, 0, 10);
 277         animalid = param_get64ex(Cmd, 1, 0, 10);
 278
 279         verify_values(countryid, animalid);
 280
 281         uint8_t clk = 32, encoding = 2, separator = 0, invert = 1;
 282         uint16_t arg1, arg2;
 283         size_t size = 128;
 284         arg1 = clk << 8 | encoding;
 285         arg2 = invert << 8 | separator;
 286
 287         PrintAndLog("Simulating FDX-B animal ID: %04u-%"PRIu64, countryid, animalid);
 288
 289         UsbCommand c = {CMD_ASK_SIM_TAG, {arg1, arg2, size}};
 290
 291          //getFDXBits(uint64_t national_id, uint16_t country, uint8_t isanimal, uint8_t isextended, uint32_t extended, uint8_t *bits)
 292         getFDXBits(animalid, countryid, 1, 0, 0, c.d.asBytes);
 293         clearCommandBuffer();
 294         SendCommand(&c);
 295         return 0;
 296 }
 297
 298 static command_t CommandTable[] = {
 299         {"help",  CmdHelp,    1, "This help"},
 300         {"demod", CmdFdxDemod,1, "Attempt to extract FDX-B ISO11784/85 data from the GraphBuffer"},
 301         {"read",  CmdFdxRead, 0, "Attempt to read and extract FDX-B ISO11784/85 data"},
 302         {"clone", CmdFdxClone,0, "Clone animal ID tag to T55x7 (or to q5/T5555)"},
 303         {"sim",   CmdFdxSim,  0, "Animal ID tag simulator"},
 304         {NULL, NULL, 0, NULL}
 305 };
 306
 307 int CmdLFFdx(const char *Cmd) {
 308         clearCommandBuffer();
 309         CmdsParse(CommandTable, Cmd);
 310         return 0;
 311 }
 312
 313 int CmdHelp(const char *Cmd) {
 314         CmdsHelp(CommandTable);
 315         return 0;
 316 }