//----------------------------------------------------------------------------- // // 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 Kantech ioProx commands // FSK2a, rf/64, 64 bits (complete) //----------------------------------------------------------------------------- #include "cmdlfio.h" #include // sscanf #include #include #include #include "commonutil.h" //ARRAYLEN #include "cmdparser.h" // command_t #include "comms.h" #include "graph.h" #include "cmdlf.h" #include "ui.h" // PrintAndLog #include "lfdemod.h" // parityTest, bitbytes_to_byte #include "protocols.h" // for T55xx config register definitions #include "cmddata.h" #include "cmdlft55xx.h" // verifywrite static int CmdHelp(const char *Cmd); static int usage_lf_io_watch(void) { PrintAndLogEx(NORMAL, "Enables IOProx compatible reader mode printing details of scanned tags."); PrintAndLogEx(NORMAL, "By default, values are printed and logged until the button is pressed or another USB command is issued."); PrintAndLogEx(NORMAL, ""); PrintAndLogEx(NORMAL, "Usage: lf io watch"); PrintAndLogEx(NORMAL, ""); PrintAndLogEx(NORMAL, "Examples:"); PrintAndLogEx(NORMAL, _YELLOW_(" lf io watch")); PrintAndLogEx(NORMAL, ""); return PM3_SUCCESS; } static int usage_lf_io_sim(void) { PrintAndLogEx(NORMAL, "Enables simulation of IOProx card with specified facility-code and card number."); PrintAndLogEx(NORMAL, "Simulation runs until the button is pressed or another USB command is issued."); PrintAndLogEx(NORMAL, ""); PrintAndLogEx(NORMAL, "Usage: lf io sim [h]

"); PrintAndLogEx(NORMAL, "Options:"); PrintAndLogEx(NORMAL, " h : This help"); PrintAndLogEx(NORMAL, " : 8bit version (" _YELLOW_("decimal") ")"); PrintAndLogEx(NORMAL, " : 8bit value facility code (" _YELLOW_("hex") ")"); PrintAndLogEx(NORMAL, " : 16bit value card number (" _YELLOW_("decimal") ")"); PrintAndLogEx(NORMAL, " : optional - specify writing to Q5/T5555 tag"); PrintAndLogEx(NORMAL, ""); PrintAndLogEx(NORMAL, "Examples:"); PrintAndLogEx(NORMAL, _YELLOW_(" lf io clone 01 101 1337")); PrintAndLogEx(NORMAL, ""); return PM3_SUCCESS; } // this read loops on device side. // uses the demod in lfops.c static int CmdIOProxWatch(const char *Cmd) { uint8_t c = tolower(param_getchar(Cmd, 0)); if (c == 'h') return usage_lf_io_watch(); PrintAndLogEx(SUCCESS, "Watching for IO Prox cards - place tag on antenna"); PrintAndLogEx(INFO, "Press pm3-button to stop reading cards"); clearCommandBuffer(); SendCommandNG(CMD_LF_IO_WATCH, NULL, 0); PacketResponseNG resp; WaitForResponse(CMD_LF_IO_WATCH, &resp); PrintAndLogEx(INFO, "Done"); return resp.status; } //by marshmellow //IO-Prox demod - FSK RF/64 with preamble of 000000001 //print ioprox ID and some format details int demodIOProx(bool verbose) { (void) verbose; // unused so far int idx = 0, retval = PM3_SUCCESS; uint8_t bits[MAX_GRAPH_TRACE_LEN] = {0}; size_t size = getFromGraphBuf(bits); if (size < 65) { PrintAndLogEx(DEBUG, "DEBUG: Error - IO prox not enough samples in GraphBuffer"); return PM3_ESOFT; } //get binary from fsk wave int waveIdx = 0; idx = detectIOProx(bits, &size, &waveIdx); if (idx < 0) { if (g_debugMode) { if (idx == -1) { PrintAndLogEx(DEBUG, "DEBUG: Error - IO prox not enough samples"); } else if (idx == -2) { PrintAndLogEx(DEBUG, "DEBUG: Error - IO prox just noise detected"); } else if (idx == -3) { PrintAndLogEx(DEBUG, "DEBUG: Error - IO prox error during fskdemod"); } else if (idx == -4) { PrintAndLogEx(DEBUG, "DEBUG: Error - IO prox preamble not found"); } else if (idx == -5) { PrintAndLogEx(DEBUG, "DEBUG: Error - IO size not correct, size %zu", size); } else if (idx == -6) { PrintAndLogEx(DEBUG, "DEBUG: Error - IO prox separator bits not found"); } else { PrintAndLogEx(DEBUG, "DEBUG: Error - IO prox error demoding fsk %d", idx); } } return PM3_ESOFT; } setDemodBuff(bits, size, idx); setClockGrid(64, waveIdx + (idx * 64)); if (idx == 0) { if (g_debugMode) { PrintAndLogEx(DEBUG, "DEBUG: Error - IO prox data not found - FSK Bits: %zu", size); if (size > 92) PrintAndLogEx(DEBUG, "%s", sprint_bin_break(bits, 92, 16)); } return PM3_ESOFT; } //Index map //0 10 20 30 40 50 60 //| | | | | | | //01234567 8 90123456 7 89012345 6 78901234 5 67890123 4 56789012 3 45678901 23 //----------------------------------------------------------------------------- //00000000 0 11110000 1 facility 1 version* 1 code*one 1 code*two 1 ???????? 11 // //XSF(version)facility:codeone+codetwo (raw) PrintAndLogEx(DEBUG, "%d%d%d%d%d%d%d%d %d", bits[idx], bits[idx + 1], bits[idx + 2], bits[idx + 3], bits[idx + 4], bits[idx + 5], bits[idx + 6], bits[idx + 7], bits[idx + 8]); PrintAndLogEx(DEBUG, "%d%d%d%d%d%d%d%d %d", bits[idx + 9], bits[idx + 10], bits[idx + 11], bits[idx + 12], bits[idx + 13], bits[idx + 14], bits[idx + 15], bits[idx + 16], bits[idx + 17]); PrintAndLogEx(DEBUG, "%d%d%d%d%d%d%d%d %d facility", bits[idx + 18], bits[idx + 19], bits[idx + 20], bits[idx + 21], bits[idx + 22], bits[idx + 23], bits[idx + 24], bits[idx + 25], bits[idx + 26]); PrintAndLogEx(DEBUG, "%d%d%d%d%d%d%d%d %d version", bits[idx + 27], bits[idx + 28], bits[idx + 29], bits[idx + 30], bits[idx + 31], bits[idx + 32], bits[idx + 33], bits[idx + 34], bits[idx + 35]); PrintAndLogEx(DEBUG, "%d%d%d%d%d%d%d%d %d code1", bits[idx + 36], bits[idx + 37], bits[idx + 38], bits[idx + 39], bits[idx + 40], bits[idx + 41], bits[idx + 42], bits[idx + 43], bits[idx + 44]); PrintAndLogEx(DEBUG, "%d%d%d%d%d%d%d%d %d code2", bits[idx + 45], bits[idx + 46], bits[idx + 47], bits[idx + 48], bits[idx + 49], bits[idx + 50], bits[idx + 51], bits[idx + 52], bits[idx + 53]); PrintAndLogEx(DEBUG, "%d%d%d%d%d%d%d%d %d%d checksum", bits[idx + 54], bits[idx + 55], bits[idx + 56], bits[idx + 57], bits[idx + 58], bits[idx + 59], bits[idx + 60], bits[idx + 61], bits[idx + 62], bits[idx + 63]); uint32_t code = bytebits_to_byte(bits + idx, 32); uint32_t code2 = bytebits_to_byte(bits + idx + 32, 32); uint8_t version = bytebits_to_byte(bits + idx + 27, 8); //14,4 uint8_t facilitycode = bytebits_to_byte(bits + idx + 18, 8) ; uint16_t number = (bytebits_to_byte(bits + idx + 36, 8) << 8) | (bytebits_to_byte(bits + idx + 45, 8)); //36,9 uint8_t crc = bytebits_to_byte(bits + idx + 54, 8); uint8_t calccrc = 0; for (uint8_t i = 1; i < 6; ++i) { calccrc += bytebits_to_byte(bits + idx + 9 * i, 8); } calccrc &= 0xff; calccrc = 0xff - calccrc; char crc_str[36] = {0}; if (crc == calccrc) { snprintf(crc_str, sizeof(crc_str), "(" _GREEN_("ok") ")"); } else { snprintf(crc_str, sizeof(crc_str), "(" _RED_("fail") ") 0x%02X != 0x%02X", crc, calccrc); retval = PM3_ESOFT; } PrintAndLogEx(SUCCESS, "IO Prox - " _GREEN_("XSF(%02d)%02x:%05d") ", Raw: %08x%08x %s", version, facilitycode, number, code, code2, crc_str); if (g_debugMode) { if (crc != calccrc) PrintAndLogEx(DEBUG, "DEBUG: Error - IO prox crc failed"); PrintAndLogEx(DEBUG, "DEBUG: IO prox idx: %d, Len: %zu, Printing demod buffer:", idx, size); printDemodBuff(0, false, false, true); printDemodBuff(0, false, false, false); } return retval; } static int CmdIOProxDemod(const char *Cmd) { (void)Cmd; // Cmd is not used so far return demodIOProx(true); } // this read is the "normal" read, which download lf signal and tries to demod here. static int CmdIOProxRead(const char *Cmd) { (void)Cmd; // Cmd is not used so far lf_read(false, 12000); return demodIOProx(true); } static int CmdIOProxSim(const char *Cmd) { uint16_t cn = 0; uint8_t version = 0, fc = 0; uint8_t bs[64]; memset(bs, 0x00, sizeof(bs)); char cmdp = tolower(param_getchar(Cmd, 0)); if (strlen(Cmd) == 0 || cmdp == 'h') return usage_lf_io_sim(); version = param_get8(Cmd, 0); fc = param_get8ex(Cmd, 1, 0, 16); cn = param_get32ex(Cmd, 2, 0, 10); if (!version || !fc || !cn) return usage_lf_io_sim(); if ((cn & 0xFFFF) != cn) { cn &= 0xFFFF; PrintAndLogEx(INFO, "Card Number Truncated to 16-bits (IOProx): %u", cn); } PrintAndLogEx(SUCCESS, "Simulating IOProx version: %u FC: %u; CN: %u\n", version, fc, cn); PrintAndLogEx(SUCCESS, "Press pm3-button to abort simulation or run another command"); if (getIOProxBits(version, fc, cn, bs) != PM3_SUCCESS) { PrintAndLogEx(ERR, "Error with tag bitstream generation."); return PM3_ESOFT; } // IOProx uses: fcHigh: 10, fcLow: 8, clk: 64, invert: 1 // arg1 --- fcHigh<<8 + fcLow // arg2 --- Invert and clk setting // size --- 64 bits == 8 bytes lf_fsksim_t *payload = calloc(1, sizeof(lf_fsksim_t) + sizeof(bs)); payload->fchigh = 10; payload->fclow = 8; payload->separator = 1; payload->clock = 64; memcpy(payload->data, bs, sizeof(bs)); clearCommandBuffer(); SendCommandNG(CMD_LF_FSK_SIMULATE, (uint8_t *)payload, sizeof(lf_fsksim_t) + sizeof(bs)); free(payload); PacketResponseNG resp; WaitForResponse(CMD_LF_FSK_SIMULATE, &resp); PrintAndLogEx(INFO, "Done"); if (resp.status != PM3_EOPABORTED) return resp.status; return PM3_SUCCESS; } static int CmdIOProxClone(const char *Cmd) { uint16_t cn = 0; uint8_t version = 0, fc = 0; uint8_t bits[64]; memset(bits, 0, sizeof(bits)); char cmdp = tolower(param_getchar(Cmd, 0)); if (strlen(Cmd) == 0 || cmdp == 'h') return usage_lf_io_clone(); version = param_get8(Cmd, 0); fc = param_get8ex(Cmd, 1, 0, 16); cn = param_get32ex(Cmd, 2, 0, 10); if (!version || !fc || !cn) return usage_lf_io_clone(); if ((cn & 0xFFFF) != cn) { cn &= 0xFFFF; PrintAndLogEx(INFO, "Card Number Truncated to 16-bits (IOProx): %u", cn); } if (getIOProxBits(version, fc, cn, bits) != PM3_SUCCESS) { PrintAndLogEx(ERR, "Error with tag bitstream generation."); return PM3_ESOFT; } uint32_t blocks[3] = {T55x7_MODULATION_FSK2a | T55x7_BITRATE_RF_64 | 2 << T55x7_MAXBLOCK_SHIFT, 0, 0}; bool q5 = tolower(param_getchar(Cmd, 3) == 'q'); if (q5) blocks[0] = T5555_FIXED | T5555_MODULATION_FSK2 | T5555_INVERT_OUTPUT | T5555_SET_BITRATE(64) | 2 << T5555_MAXBLOCK_SHIFT; blocks[1] = bytebits_to_byte(bits, 32); blocks[2] = bytebits_to_byte(bits + 32, 32); PrintAndLogEx(INFO, "Preparing to clone IOProx to " _YELLOW_("%s") " with Version: %u FC: %u, CN: %u", (q5) ? "Q5/T5555" : "T55x7", version, fc, cn); print_blocks(blocks, ARRAYLEN(blocks)); int res = clone_t55xx_tag(blocks, ARRAYLEN(blocks)); PrintAndLogEx(SUCCESS, "Done"); PrintAndLogEx(HINT, "Hint: try " _YELLOW_("`lf io read`") " to verify"); return res; } static command_t CommandTable[] = { {"help", CmdHelp, AlwaysAvailable, "this help"}, {"demod", CmdIOProxDemod, AlwaysAvailable, "demodulate an IOProx tag from the GraphBuffer"}, {"read", CmdIOProxRead, IfPm3Lf, "attempt to read and extract tag data"}, {"clone", CmdIOProxClone, IfPm3Lf, "clone IOProx tag to T55x7 or Q5/T5555"}, {"sim", CmdIOProxSim, IfPm3Lf, "simulate IOProx tag"}, {"watch", CmdIOProxWatch, IfPm3Lf, "continuously watch for cards. Reader mode"}, {NULL, NULL, NULL, NULL} }; static int CmdHelp(const char *Cmd) { (void)Cmd; // Cmd is not used so far CmdsHelp(CommandTable); return PM3_SUCCESS; } int CmdLFIO(const char *Cmd) { clearCommandBuffer(); return CmdsParse(CommandTable, Cmd); } //Index map //0 10 20 30 40 50 60 //| | | | | | | //01234567 8 90123456 7 89012345 6 78901234 5 67890123 4 56789012 3 45678901 23 //----------------------------------------------------------------------------- //00000000 0 11110000 1 facility 1 version* 1 code*one 1 code*two 1 crc 11 //XSF(version)facility:codeone+codetwo (raw) int getIOProxBits(uint8_t version, uint8_t fc, uint16_t cn, uint8_t *bits) { #define SEPARATOR 1 uint8_t pos = 0; // the return bits, preamble 0000 0000 0 uint8_t pre[64]; memset(pre, 0, sizeof(pre)); // skip 9 zeros as preamble pos = 9; // another fixed byte 11110000 = 0xF0 num_to_bytebits(0xF0, 8, pre + pos); pos += 8; pre[pos] = SEPARATOR; pos++; // add facilitycode num_to_bytebits(fc, 8, pre + pos); pos += 8; pre[pos] = SEPARATOR; pos++; // add version num_to_bytebits(version, 8, pre + pos); pos += 8; pre[pos] = SEPARATOR; pos++; // cardnumber high byte num_to_bytebits(((cn & 0xFF00) >> 8), 8, pre + pos); pos += 8; pre[pos] = SEPARATOR; pos++; // cardnumber low byte num_to_bytebits((cn & 0xFF), 8, pre + pos); pos += 8; pre[pos] = SEPARATOR; pos++; // calculate and add CRC uint16_t crc = 0; for (uint8_t i = 1; i < 6; ++i) crc += bytebits_to_byte(pre + 9 * i, 8); crc &= 0xFF; crc = 0xff - crc; num_to_bytebits(crc, 8, pre + pos); pos += 8; // Final two ONES pre[pos] = SEPARATOR; pre[++pos] = SEPARATOR; memcpy(bits, pre, sizeof(pre)); PrintAndLogEx(SUCCESS, "IO raw bits:\n %s \n", sprint_bin(bits, 64)); return PM3_SUCCESS; }