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 <stdio.h>
  13 #include <inttypes.h>
  14 #include <string.h>
  15 #include "proxmark3.h"
  16 #include "ui.h"         // for PrintAndLog
  17 #include "util.h"
  18 #include "cmdparser.h"
  19 #include "cmddata.h"
  20 #include "cmdmain.h"
  21 #include "cmdlf.h"
  22 #include "crc16.h"
  23 #include "protocols.h"
  24 #include "lfdemod.h"
  25
  26 /*
  27         FDX-B ISO11784/85 demod  (aka animal tag)  BIPHASE, inverted, rf/32,  with preamble of 00000000001 (128bits)
  28         8 databits + 1 parity (1)
  29         CIITT 16 checksum
  30         NATIONAL CODE, ICAR database
  31         COUNTRY CODE (ISO3166) or http://cms.abvma.ca/uploads/ManufacturersISOsandCountryCodes.pdf
  32         FLAG (animal/non-animal)
  33
  34         38 IDbits
  35         10 country code
  36         1 extra app bit
  37         14 reserved bits
  38         1 animal bit
  39         16 ccitt CRC chksum over 64bit ID CODE.
  40         24 appli bits.
  41
  42         sample: 985121004515220  [ 37FF65B88EF94 ]
  43 */
  44
  45 static int CmdHelp(const char *Cmd);
  46
  47 int usage_lf_fdx_clone(void){
  48         PrintAndLog("Clone a FDX-B animal tag to a T55x7 tag.");
  49         PrintAndLog("Usage: lf animal clone [h] <country id> <animal id> <Q5>");
  50         PrintAndLog("Options:");
  51         PrintAndLog("      h            : This help");
  52         PrintAndLog("      <country id> : Country id");
  53         PrintAndLog("      <animal id>  : Animal id");
  54         // has extended data?
  55         //reserved/rfu
  56         //is animal tag
  57         // extended data
  58         PrintAndLog("      <Q5>        : Specify write to Q5 (t5555 instead of t55x7)");
  59         PrintAndLog("");
  60         PrintAndLog("Sample: lf animal clone 999 112233");
  61         return 0;
  62 }
  63
  64 int usage_lf_fdx_sim(void) {
  65         PrintAndLog("Enables simulation of FDX-B animal tag");
  66         PrintAndLog("Simulation runs until the button is pressed or another USB command is issued.");
  67         PrintAndLog("");
  68         PrintAndLog("Usage:  lf animal sim [h] <country id> <animal id>");
  69         PrintAndLog("Options:");
  70         PrintAndLog("      h            : This help");
  71         PrintAndLog("      <country id> : Country ID");
  72         PrintAndLog("      <animal id>  : Animal ID");
  73         PrintAndLog("");
  74         PrintAndLog("Sample: lf animal sim 999 112233");
  75         return 0;
  76 }
  77 // clearing the topbit needed for the preambl detection.
  78 static void verify_values(uint32_t countryid, uint64_t animalid){
  79         if ((animalid & 0x3FFFFFFFFF) != animalid) {
  80                 animalid &= 0x3FFFFFFFFF;
  81                 PrintAndLog("Animal ID Truncated to 38bits: %"PRIx64, animalid);
  82         }
  83         if ( (countryid & 0x3ff) != countryid ) {
  84                 countryid &= 0x3ff;
  85                 PrintAndLog("Country ID Truncated to 10bits: %03d", countryid);
  86         }
  87 }
  88
  89 int getFDXBits(uint64_t national_id, uint16_t country, uint8_t isanimal, uint8_t isextended, uint32_t extended, uint8_t *bits) {
  90
  91         // 128bits
  92         // every 9th bit is 0x01, but we can just fill the rest with 0x01 and overwrite
  93         memset(bits, 0x01, 128);
  94
  95         // add preamble ten 0x00 and one 0x01
  96         memset(bits, 0x00, 10);
  97
  98         // add reserved
  99         num_to_bytebitsLSBF(0x00, 7, bits + 66);
 100         num_to_bytebitsLSBF(0x00 >> 7, 7, bits + 74);
 101
 102         // add animal flag - OK
 103         bits[65] = isanimal;
 104
 105         // add extended flag - OK
 106         bits[81] = isextended;
 107
 108         // add national code 40bits - OK
 109         num_to_bytebitsLSBF(national_id >> 0, 8, bits+11);
 110         num_to_bytebitsLSBF(national_id >> 8, 8, bits+20);
 111         num_to_bytebitsLSBF(national_id >> 16, 8, bits+29);
 112         num_to_bytebitsLSBF(national_id >> 24, 8, bits+38);
 113         num_to_bytebitsLSBF(national_id >> 32, 6, bits+47);
 114
 115         // add country code - OK
 116         num_to_bytebitsLSBF(country >> 0, 2, bits+53);
 117         num_to_bytebitsLSBF(country >> 2, 8, bits+56);
 118
 119         // add crc-16 - OK
 120         uint8_t raw[8];
 121         for (uint8_t i=0; i<8; ++i)
 122                 raw[i] = bytebits_to_byte(bits + 11 + i * 9, 8);
 123
 124         uint16_t crc = crc16_ccitt_kermit(raw, 8);
 125         num_to_bytebitsLSBF(crc >> 0, 8, bits+83);
 126         num_to_bytebitsLSBF(crc >> 8, 8, bits+92);
 127
 128         // extended data - OK
 129         num_to_bytebitsLSBF( extended >> 0 , 8, bits+101);
 130         num_to_bytebitsLSBF( extended >> 8 , 8, bits+110);
 131         num_to_bytebitsLSBF( extended >> 16, 8, bits+119);
 132         return 1;
 133 }
 134
 135 int CmdFdxDemod(const char *Cmd){
 136
 137         //Differential Biphase / di-phase (inverted biphase)
 138         //get binary from ask wave
 139         if (!ASKbiphaseDemod("0 32 1 0", false)) {
 140                 if (g_debugMode) PrintAndLog("DEBUG: Error - FDX-B ASKbiphaseDemod failed");
 141                 return 0;
 142         }
 143         size_t size = DemodBufferLen;
 144         int preambleIndex = FDXBdemodBI(DemodBuffer, &size);
 145         if (preambleIndex < 0){
 146                 if (g_debugMode){
 147                         if (preambleIndex == -1)
 148                                 PrintAndLog("DEBUG: Error - FDX-B too few bits found");
 149                         else if (preambleIndex == -2)
 150                                 PrintAndLog("DEBUG: Error - FDX-B preamble not found");
 151                         else if (preambleIndex == -3)
 152                                 PrintAndLog("DEBUG: Error - FDX-B Size not correct: %d", size);
 153                         else
 154                                 PrintAndLog("DEBUG: Error - FDX-B ans: %d", preambleIndex);
 155                 }
 156                 return 0;
 157         }
 158
 159         // set and leave DemodBuffer intact
 160         setDemodBuf(DemodBuffer, 128, preambleIndex);
 161         uint8_t bits_no_spacer[117];
 162         memcpy(bits_no_spacer, DemodBuffer + 11, 117);
 163
 164         // remove marker bits (1's every 9th digit after preamble) (pType = 2)
 165         size = removeParity(bits_no_spacer, 0, 9, 2, 117);
 166         if ( size != 104 ) {
 167                 if (g_debugMode) PrintAndLog("DEBUG: Error removeParity:: %d", size);
 168                 return 0;
 169         }
 170
 171         //got a good demod
 172         uint64_t NationalCode = ((uint64_t)(bytebits_to_byteLSBF(bits_no_spacer+32,6)) << 32) | bytebits_to_byteLSBF(bits_no_spacer,32);
 173         uint32_t countryCode = bytebits_to_byteLSBF(bits_no_spacer+38,10);
 174         uint8_t dataBlockBit = bits_no_spacer[48];
 175         uint32_t reservedCode = bytebits_to_byteLSBF(bits_no_spacer+49,14);
 176         uint8_t animalBit = bits_no_spacer[63];
 177         uint32_t crc16 = bytebits_to_byteLSBF(bits_no_spacer+64,16);
 178         uint32_t extended = bytebits_to_byteLSBF(bits_no_spacer+80,24);
 179
 180         uint64_t rawid = ((uint64_t)bytebits_to_byte(bits_no_spacer,32)<<32) | bytebits_to_byte(bits_no_spacer+32,32);
 181         uint8_t raw[8];
 182         num_to_bytes(rawid, 8, raw);
 183
 184         if (g_debugMode) {
 185                 PrintAndLog("DEBUG: bits_no_spacer:\n%s",sprint_bin_break(bits_no_spacer,size,16));
 186                 PrintAndLog("DEBUG: Start marker %d;   Size %d", preambleIndex, size);
 187                 PrintAndLog("DEBUG: Raw ID Hex: %s", sprint_hex(raw,8));
 188         }
 189
 190         uint16_t calcCrc = crc16_ccitt_kermit(raw, 8);
 191         PrintAndLog("\nFDX-B / ISO 11784/5 Animal Tag ID Found:");
 192         PrintAndLog("Animal ID:     %04u-%012" PRIu64, countryCode, NationalCode);
 193         PrintAndLog("National Code: %012" PRIu64, NationalCode);
 194         PrintAndLog("CountryCode:   %04u", countryCode);
 195         PrintAndLog("Reserved Code: %u", reservedCode);
 196         PrintAndLog("Animal Tag:    %s", animalBit ? "True" : "False");
 197         PrintAndLog("Has Extended:  %s [0x%X]", dataBlockBit ? "True" : "False", extended);
 198         PrintAndLog("CRC:           0x%04X - 0x%04X - [%s]\n", crc16, calcCrc, (calcCrc == crc16) ? "Passed" : "Failed");
 199
 200         // set block 0 for later
 201         //g_DemodConfig = T55x7_MODULATION_DIPHASE | T55x7_BITRATE_RF_32 | 4 << T55x7_MAXBLOCK_SHIFT;
 202         return 1;
 203 }
 204
 205 int CmdFdxRead(const char *Cmd) {
 206         CmdLFRead("s");
 207         getSamples("10000", true);
 208         return CmdFdxDemod(Cmd);
 209 }
 210
 211 int CmdFdxClone(const char *Cmd) {
 212
 213         uint32_t countryid = 0;
 214         uint64_t animalid = 0;
 215         uint32_t blocks[5] = {T55x7_MODULATION_DIPHASE | T55x7_BITRATE_RF_32 | 4 << T55x7_MAXBLOCK_SHIFT, 0, 0, 0, 0};
 216         uint8_t bits[128];
 217         uint8_t *bs = bits;
 218         memset(bs, 0, sizeof(bits));
 219
 220         char cmdp = param_getchar(Cmd, 0);
 221         if (strlen(Cmd) == 0 || cmdp == 'h' || cmdp == 'H') return usage_lf_fdx_clone();
 222
 223         countryid = param_get32ex(Cmd, 0, 0, 10);
 224         animalid = param_get64ex(Cmd, 1, 0, 10);
 225
 226         //Q5
 227         if (param_getchar(Cmd, 2) == 'Q' || param_getchar(Cmd, 2) == 'q') {
 228                 //t5555 (Q5) BITRATE = (RF-2)/2 (iceman)
 229                 blocks[0] = T5555_MODULATION_BIPHASE | T5555_INVERT_OUTPUT | ((32-2)>>1) << T5555_BITRATE_SHIFT | 4 << T5555_MAXBLOCK_SHIFT;
 230         }
 231
 232         verify_values(countryid, animalid);
 233
 234         // getFDXBits(uint64_t national_id, uint16_t country, uint8_t isanimal, uint8_t isextended, uint32_t extended, uint8_t *bits)
 235         if ( !getFDXBits(animalid, countryid, 1, 0, 0, bs)) {
 236                 PrintAndLog("Error with tag bitstream generation.");
 237                 return 1;
 238         }
 239
 240         // convert from bit stream to block data
 241         blocks[1] = bytebits_to_byte(bs,32);
 242         blocks[2] = bytebits_to_byte(bs+32,32);
 243         blocks[3] = bytebits_to_byte(bs+64,32);
 244         blocks[4] = bytebits_to_byte(bs+96,32);
 245
 246         PrintAndLog("Preparing to clone FDX-B to T55x7 with animal ID: %04u-%"PRIu64, countryid, animalid);
 247         PrintAndLog("Blk | Data ");
 248         PrintAndLog("----+------------");
 249         PrintAndLog(" 00 | 0x%08x", blocks[0]);
 250         PrintAndLog(" 01 | 0x%08x", blocks[1]);
 251         PrintAndLog(" 02 | 0x%08x", blocks[2]);
 252         PrintAndLog(" 03 | 0x%08x", blocks[3]);
 253         PrintAndLog(" 04 | 0x%08x", blocks[4]);
 254
 255         UsbCommand resp;
 256         UsbCommand c = {CMD_T55XX_WRITE_BLOCK, {0,0,0}};
 257
 258         for (int i = 4; i >= 0; --i) {
 259                 c.arg[0] = blocks[i];
 260                 c.arg[1] = i;
 261                 clearCommandBuffer();
 262                 SendCommand(&c);
 263                 if (!WaitForResponseTimeout(CMD_ACK, &resp, T55XX_WRITE_TIMEOUT)){
 264                         PrintAndLog("Error occurred, device did not respond during write operation.");
 265                         return -1;
 266                 }
 267         }
 268         return 0;
 269 }
 270
 271 int CmdFdxSim(const char *Cmd) {
 272         uint32_t countryid = 0;
 273         uint64_t animalid = 0;
 274
 275         char cmdp = param_getchar(Cmd, 0);
 276         if (strlen(Cmd) == 0 || cmdp == 'h' || cmdp == 'H') return usage_lf_fdx_sim();
 277
 278         countryid = param_get32ex(Cmd, 0, 0, 10);
 279         animalid = param_get64ex(Cmd, 1, 0, 10);
 280
 281         verify_values(countryid, animalid);
 282
 283         uint8_t clk = 32, encoding = 2, separator = 0, invert = 1;
 284         uint16_t arg1, arg2;
 285         size_t size = 128;
 286         arg1 = clk << 8 | encoding;
 287         arg2 = invert << 8 | separator;
 288
 289         PrintAndLog("Simulating FDX-B animal ID: %04u-%"PRIu64, countryid, animalid);
 290
 291         UsbCommand c = {CMD_ASK_SIM_TAG, {arg1, arg2, size}};
 292
 293          //getFDXBits(uint64_t national_id, uint16_t country, uint8_t isanimal, uint8_t isextended, uint32_t extended, uint8_t *bits)
 294         getFDXBits(animalid, countryid, 1, 0, 0, c.d.asBytes);
 295         clearCommandBuffer();
 296         SendCommand(&c);
 297         return 0;
 298 }
 299
 300 static command_t CommandTable[] = {
 301         {"help",  CmdHelp,    1, "This help"},
 302         {"demod", CmdFdxDemod,1, "Attempt to extract FDX-B ISO11784/85 data from the GraphBuffer"},
 303         {"read",  CmdFdxRead, 0, "Attempt to read and extract FDX-B ISO11784/85 data"},
 304         {"clone", CmdFdxClone,0, "Clone animal ID tag to T55x7 (or to q5/T5555)"},
 305         {"sim",   CmdFdxSim,  0, "Animal ID tag simulator"},
 306         {NULL, NULL, 0, NULL}
 307 };
 308
 309 int CmdLFFdx(const char *Cmd) {
 310         clearCommandBuffer();
 311         CmdsParse(CommandTable, Cmd);
 312         return 0;
 313 }
 314
 315 int CmdHelp(const char *Cmd) {
 316         CmdsHelp(CommandTable);
 317         return 0;
 318 }