X-Git-Url: https://git.zerfleddert.de/cgi-bin/gitweb.cgi/proxmark3-svn/blobdiff_plain/946a84c35be79de8852d2c294de22f456f42a1ae..4db6f3bbb9b589f62bdaa8d30be0dc6cef3dac3f:/client/cmdlffdx.c diff --git a/client/cmdlffdx.c b/client/cmdlffdx.c new file mode 100644 index 00000000..69c3c483 --- /dev/null +++ b/client/cmdlffdx.c @@ -0,0 +1,316 @@ +//----------------------------------------------------------------------------- +// +// This code is licensed to you under the terms of the GNU GPL, version 2 or, +// at your option, any later version. See the LICENSE.txt file for the text of +// the license. +//----------------------------------------------------------------------------- +// Low frequency fdx-b tag commands +//----------------------------------------------------------------------------- + +#include "cmdlffdx.h" + +#include +#include "proxmark3.h" +#include "ui.h" // for PrintAndLog +#include "util.h" +#include "cmdparser.h" +#include "cmddata.h" +#include "cmdmain.h" +#include "cmdlf.h" +#include "crc16.h" +#include "protocols.h" +#include "lfdemod.h" + +/* + FDX-B ISO11784/85 demod (aka animal tag) BIPHASE, inverted, rf/32, with preamble of 00000000001 (128bits) + 8 databits + 1 parity (1) + CIITT 16 checksum + NATIONAL CODE, ICAR database + COUNTRY CODE (ISO3166) or http://cms.abvma.ca/uploads/ManufacturersISOsandCountryCodes.pdf + FLAG (animal/non-animal) + + 38 IDbits + 10 country code + 1 extra app bit + 14 reserved bits + 1 animal bit + 16 ccitt CRC chksum over 64bit ID CODE. + 24 appli bits. + + sample: 985121004515220 [ 37FF65B88EF94 ] +*/ + +static int CmdHelp(const char *Cmd); + +int usage_lf_fdx_clone(void){ + PrintAndLog("Clone a FDX-B animal tag to a T55x7 tag."); + PrintAndLog("Usage: lf animal clone [h] "); + PrintAndLog("Options:"); + PrintAndLog(" h : This help"); + PrintAndLog(" : Country id"); + PrintAndLog(" : Animal id"); + // has extended data? + //reserved/rfu + //is animal tag + // extended data + PrintAndLog(" : Specify write to Q5 (t5555 instead of t55x7)"); + PrintAndLog(""); + PrintAndLog("Sample: lf animal clone 999 112233"); + return 0; +} + +int usage_lf_fdx_sim(void) { + PrintAndLog("Enables simulation of FDX-B animal tag"); + PrintAndLog("Simulation runs until the button is pressed or another USB command is issued."); + PrintAndLog(""); + PrintAndLog("Usage: lf animal sim [h] "); + PrintAndLog("Options:"); + PrintAndLog(" h : This help"); + PrintAndLog(" : Country ID"); + PrintAndLog(" : Animal ID"); + PrintAndLog(""); + PrintAndLog("Sample: lf animal sim 999 112233"); + return 0; +} +// clearing the topbit needed for the preambl detection. +static void verify_values(uint32_t countryid, uint64_t animalid){ + if ((animalid & 0x3FFFFFFFFF) != animalid) { + animalid &= 0x3FFFFFFFFF; + PrintAndLog("Animal ID Truncated to 38bits: %"PRIx64, animalid); + } + if ( (countryid & 0x3ff) != countryid ) { + countryid &= 0x3ff; + PrintAndLog("Country ID Truncated to 10bits: %03d", countryid); + } +} + +int getFDXBits(uint64_t national_id, uint16_t country, uint8_t isanimal, uint8_t isextended, uint32_t extended, uint8_t *bits) { + + // 128bits + // every 9th bit is 0x01, but we can just fill the rest with 0x01 and overwrite + memset(bits, 0x01, 128); + + // add preamble ten 0x00 and one 0x01 + memset(bits, 0x00, 10); + + // add reserved + num_to_bytebitsLSBF(0x00, 7, bits + 66); + num_to_bytebitsLSBF(0x00 >> 7, 7, bits + 74); + + // add animal flag - OK + bits[65] = isanimal; + + // add extended flag - OK + bits[81] = isextended; + + // add national code 40bits - OK + num_to_bytebitsLSBF(national_id >> 0, 8, bits+11); + num_to_bytebitsLSBF(national_id >> 8, 8, bits+20); + num_to_bytebitsLSBF(national_id >> 16, 8, bits+29); + num_to_bytebitsLSBF(national_id >> 24, 8, bits+38); + num_to_bytebitsLSBF(national_id >> 32, 6, bits+47); + + // add country code - OK + num_to_bytebitsLSBF(country >> 0, 2, bits+53); + num_to_bytebitsLSBF(country >> 2, 8, bits+56); + + // add crc-16 - OK + uint8_t raw[8]; + for (uint8_t i=0; i<8; ++i) + raw[i] = bytebits_to_byte(bits + 11 + i * 9, 8); + + uint16_t crc = crc16_ccitt_kermit(raw, 8); + num_to_bytebitsLSBF(crc >> 0, 8, bits+83); + num_to_bytebitsLSBF(crc >> 8, 8, bits+92); + + // extended data - OK + num_to_bytebitsLSBF( extended >> 0 , 8, bits+101); + num_to_bytebitsLSBF( extended >> 8 , 8, bits+110); + num_to_bytebitsLSBF( extended >> 16, 8, bits+119); + return 1; +} + +int CmdFdxDemod(const char *Cmd){ + + //Differential Biphase / di-phase (inverted biphase) + //get binary from ask wave + if (!ASKbiphaseDemod("0 32 1 0", FALSE)) { + if (g_debugMode) PrintAndLog("DEBUG: Error - FDX-B ASKbiphaseDemod failed"); + return 0; + } + size_t size = DemodBufferLen; + int preambleIndex = FDXBdemodBI(DemodBuffer, &size); + if (preambleIndex < 0){ + if (g_debugMode){ + if (preambleIndex == -1) + PrintAndLog("DEBUG: Error - FDX-B too few bits found"); + else if (preambleIndex == -2) + PrintAndLog("DEBUG: Error - FDX-B preamble not found"); + else if (preambleIndex == -3) + PrintAndLog("DEBUG: Error - FDX-B Size not correct: %d", size); + else + PrintAndLog("DEBUG: Error - FDX-B ans: %d", preambleIndex); + } + return 0; + } + + // set and leave DemodBuffer intact + setDemodBuf(DemodBuffer, 128, preambleIndex); + uint8_t bits_no_spacer[117]; + memcpy(bits_no_spacer, DemodBuffer + 11, 117); + + // remove marker bits (1's every 9th digit after preamble) (pType = 2) + size = removeParity(bits_no_spacer, 0, 9, 2, 117); + if ( size != 104 ) { + if (g_debugMode) PrintAndLog("DEBUG: Error removeParity:: %d", size); + return 0; + } + + //got a good demod + uint64_t NationalCode = ((uint64_t)(bytebits_to_byteLSBF(bits_no_spacer+32,6)) << 32) | bytebits_to_byteLSBF(bits_no_spacer,32); + uint32_t countryCode = bytebits_to_byteLSBF(bits_no_spacer+38,10); + uint8_t dataBlockBit = bits_no_spacer[48]; + uint32_t reservedCode = bytebits_to_byteLSBF(bits_no_spacer+49,14); + uint8_t animalBit = bits_no_spacer[63]; + uint32_t crc16 = bytebits_to_byteLSBF(bits_no_spacer+64,16); + uint32_t extended = bytebits_to_byteLSBF(bits_no_spacer+80,24); + + uint64_t rawid = ((uint64_t)bytebits_to_byte(bits_no_spacer,32)<<32) | bytebits_to_byte(bits_no_spacer+32,32); + uint8_t raw[8]; + num_to_bytes(rawid, 8, raw); + + if (g_debugMode) { + PrintAndLog("DEBUG: bits_no_spacer:\n%s",sprint_bin_break(bits_no_spacer,size,16)); + PrintAndLog("DEBUG: Start marker %d; Size %d", preambleIndex, size); + PrintAndLog("DEBUG: Raw ID Hex: %s", sprint_hex(raw,8)); + } + + uint16_t calcCrc = crc16_ccitt_kermit(raw, 8); + PrintAndLog("\nFDX-B / ISO 11784/5 Animal Tag ID Found:"); + PrintAndLog("Animal ID: %04u-%012" PRIu64, countryCode, NationalCode); + PrintAndLog("National Code: %012" PRIu64, NationalCode); + PrintAndLog("CountryCode: %04u", countryCode); + PrintAndLog("Reserved Code: %u", reservedCode); + PrintAndLog("Animal Tag: %s", animalBit ? "True" : "False"); + PrintAndLog("Has Extended: %s [0x%X]", dataBlockBit ? "True" : "False", extended); + PrintAndLog("CRC: 0x%04X - 0x%04X - [%s]\n", crc16, calcCrc, (calcCrc == crc16) ? "Passed" : "Failed"); + + // set block 0 for later + //g_DemodConfig = T55x7_MODULATION_DIPHASE | T55x7_BITRATE_RF_32 | 4 << T55x7_MAXBLOCK_SHIFT; + return 1; +} + +int CmdFdxRead(const char *Cmd) { + CmdLFRead("s"); + getSamples("10000", TRUE); + return CmdFdxDemod(Cmd); +} + +int CmdFdxClone(const char *Cmd) { + + uint32_t countryid = 0; + uint64_t animalid = 0; + uint32_t blocks[5] = {T55x7_MODULATION_DIPHASE | T55x7_BITRATE_RF_32 | 4 << T55x7_MAXBLOCK_SHIFT, 0, 0, 0, 0}; + uint8_t bits[128]; + uint8_t *bs = bits; + memset(bs, 0, sizeof(bits)); + + char cmdp = param_getchar(Cmd, 0); + if (strlen(Cmd) == 0 || cmdp == 'h' || cmdp == 'H') return usage_lf_fdx_clone(); + + countryid = param_get32ex(Cmd, 0, 0, 10); + animalid = param_get64ex(Cmd, 1, 0, 10); + + //Q5 + if (param_getchar(Cmd, 2) == 'Q' || param_getchar(Cmd, 2) == 'q') { + //t5555 (Q5) BITRATE = (RF-2)/2 (iceman) + blocks[0] = T5555_MODULATION_BIPHASE | T5555_INVERT_OUTPUT | ((32-2)>>1) << T5555_BITRATE_SHIFT | 4 << T5555_MAXBLOCK_SHIFT; + } + + verify_values(countryid, animalid); + + // getFDXBits(uint64_t national_id, uint16_t country, uint8_t isanimal, uint8_t isextended, uint32_t extended, uint8_t *bits) + if ( !getFDXBits(animalid, countryid, 1, 0, 0, bs)) { + PrintAndLog("Error with tag bitstream generation."); + return 1; + } + + // convert from bit stream to block data + blocks[1] = bytebits_to_byte(bs,32); + blocks[2] = bytebits_to_byte(bs+32,32); + blocks[3] = bytebits_to_byte(bs+64,32); + blocks[4] = bytebits_to_byte(bs+96,32); + + PrintAndLog("Preparing to clone FDX-B to T55x7 with animal ID: %04u-%"PRIu64, countryid, animalid); + PrintAndLog("Blk | Data "); + PrintAndLog("----+------------"); + PrintAndLog(" 00 | 0x%08x", blocks[0]); + PrintAndLog(" 01 | 0x%08x", blocks[1]); + PrintAndLog(" 02 | 0x%08x", blocks[2]); + PrintAndLog(" 03 | 0x%08x", blocks[3]); + PrintAndLog(" 04 | 0x%08x", blocks[4]); + + UsbCommand resp; + UsbCommand c = {CMD_T55XX_WRITE_BLOCK, {0,0,0}}; + + for (int i = 4; i >= 0; --i) { + c.arg[0] = blocks[i]; + c.arg[1] = i; + clearCommandBuffer(); + SendCommand(&c); + if (!WaitForResponseTimeout(CMD_ACK, &resp, T55XX_WRITE_TIMEOUT)){ + PrintAndLog("Error occurred, device did not respond during write operation."); + return -1; + } + } + return 0; +} + +int CmdFdxSim(const char *Cmd) { + uint32_t countryid = 0; + uint64_t animalid = 0; + + char cmdp = param_getchar(Cmd, 0); + if (strlen(Cmd) == 0 || cmdp == 'h' || cmdp == 'H') return usage_lf_fdx_sim(); + + countryid = param_get32ex(Cmd, 0, 0, 10); + animalid = param_get64ex(Cmd, 1, 0, 10); + + verify_values(countryid, animalid); + + uint8_t clk = 32, encoding = 2, separator = 0, invert = 1; + uint16_t arg1, arg2; + size_t size = 128; + arg1 = clk << 8 | encoding; + arg2 = invert << 8 | separator; + + PrintAndLog("Simulating FDX-B animal ID: %04u-%"PRIu64, countryid, animalid); + + UsbCommand c = {CMD_ASK_SIM_TAG, {arg1, arg2, size}}; + + //getFDXBits(uint64_t national_id, uint16_t country, uint8_t isanimal, uint8_t isextended, uint32_t extended, uint8_t *bits) + getFDXBits(animalid, countryid, 1, 0, 0, c.d.asBytes); + clearCommandBuffer(); + SendCommand(&c); + return 0; +} + +static command_t CommandTable[] = { + {"help", CmdHelp, 1, "This help"}, + {"demod", CmdFdxDemod,1, "Attempt to extract FDX-B ISO11784/85 data from the GraphBuffer"}, + {"read", CmdFdxRead, 0, "Attempt to read and extract FDX-B ISO11784/85 data"}, + {"clone", CmdFdxClone,0, "Clone animal ID tag to T55x7 (or to q5/T5555)"}, + {"sim", CmdFdxSim, 0, "Animal ID tag simulator"}, + {NULL, NULL, 0, NULL} +}; + +int CmdLFFdx(const char *Cmd) { + clearCommandBuffer(); + CmdsParse(CommandTable, Cmd); + return 0; +} + +int CmdHelp(const char *Cmd) { + CmdsHelp(CommandTable); + return 0; +}