X-Git-Url: https://git.zerfleddert.de/cgi-bin/gitweb.cgi/proxmark3-svn/blobdiff_plain/633d06868280966024c00e50e6770c8b34d3d2e5..165b92dc3558e43e61c3625e748e15cb270e7ab3:/client/cmdhflegic.c diff --git a/client/cmdhflegic.c b/client/cmdhflegic.c index 72c12a40..4414efa1 100644 --- a/client/cmdhflegic.c +++ b/client/cmdhflegic.c @@ -13,86 +13,72 @@ static int CmdHelp(const char *Cmd); #define MAX_LENGTH 1024 -int usage_legic_calccrc8(void){ - PrintAndLog("Calculates the legic crc8/crc16 on the input hexbytes."); +int usage_legic_calccrc(void){ + PrintAndLog("Calculates the legic crc8/crc16 on the given data."); PrintAndLog("There must be an even number of hexsymbols as input."); - PrintAndLog("Usage: hf legic crc8 [h] b u c "); + PrintAndLog("Usage: hf legic crc [h] d u c <8|16>"); PrintAndLog("Options:"); PrintAndLog(" h : this help"); - PrintAndLog(" b : hex bytes"); + PrintAndLog(" d : (hex symbols) bytes to calculate crc over"); PrintAndLog(" u : MCC hexbyte"); - PrintAndLog(" c : 8|16 bit crc size"); + PrintAndLog(" c <8|16> : Crc type"); PrintAndLog(""); PrintAndLog("Samples:"); - PrintAndLog(" hf legic crc8 b deadbeef1122"); - PrintAndLog(" hf legic crc8 b deadbeef1122 u 9A c 16"); + PrintAndLog(" hf legic crc b deadbeef1122"); + PrintAndLog(" hf legic crc b deadbeef1122 u 9A c 16"); return 0; } -int usage_legic_load(void){ - PrintAndLog("It loads datasamples from the file `filename` to device memory"); - PrintAndLog("Usage: hf legic load [h] "); - PrintAndLog("Options:"); - PrintAndLog(" h : this help"); - PrintAndLog(" : Name of file to load"); - PrintAndLog(""); - PrintAndLog("Samples:"); - PrintAndLog(" hf legic load filename"); - return 0; -} -int usage_legic_read(void){ +int usage_legic_rdmem(void){ PrintAndLog("Read data from a legic tag."); - PrintAndLog("Usage: hf legic read [h] "); + PrintAndLog("Usage: hf legic rdmem [h] "); PrintAndLog("Options:"); - PrintAndLog(" h : this help"); - PrintAndLog(" : offset in data array to start download from (hex)"); - PrintAndLog(" : number of bytes to read (hex)"); - PrintAndLog(" : (optional) Initialization vector to use (hex, odd and 7bits)"); + PrintAndLog(" h : this help"); + PrintAndLog(" : (hex) offset in data array to start download from"); + PrintAndLog(" : (hex) number of bytes to read"); + PrintAndLog(" : (hex) (optional) Initialization vector to use. Must be odd and 7bits max"); PrintAndLog(""); PrintAndLog("Samples:"); - PrintAndLog(" hf legic read 0 21 - reads from byte[0] 21 bytes(system header)"); - PrintAndLog(" hf legic read 0 4 55 - reads from byte[0] 4 bytes with IV 0x55"); - PrintAndLog(" hf legic read 0 100 55 - reads 256bytes with IV 0x55"); + PrintAndLog(" hf legic rdmem 0 16 - reads from byte[0] 0x16 bytes(system header)"); + PrintAndLog(" hf legic rdmem 0 4 55 - reads from byte[0] 0x4 bytes with IV 0x55"); + PrintAndLog(" hf legic rdmem 0 100 55 - reads 0x100 bytes with IV 0x55"); return 0; } int usage_legic_sim(void){ - PrintAndLog("Missing help text."); - return 0; -} -int usage_legic_write(void){ - PrintAndLog(" Write sample buffer to a legic tag. (use after load or read)"); - PrintAndLog("Usage: hf legic write [h] "); + PrintAndLog("Simulates a LEGIC Prime tag. MIM22, MIM256, MIM1024 types can be emulated"); + PrintAndLog("Use eload/esave to upload a dump into emulator memory"); + PrintAndLog("Usage: hf legic sim [h] "); PrintAndLog("Options:"); - PrintAndLog(" h : this help"); - PrintAndLog(" : offset in data array to start writing from (hex)"); - PrintAndLog(" : number of bytes to write (hex)"); - PrintAndLog(" : (optional) Initialization vector to use (ODD and 7bits)"); + PrintAndLog(" h : this help"); + PrintAndLog(" : 0 = MIM22"); + PrintAndLog(" : 1 = MIM256 (default)"); + PrintAndLog(" : 2 = MIM1024"); + PrintAndLog(" : phase drift"); + PrintAndLog(" : frame drift"); + PrintAndLog(" : reqresp drift"); PrintAndLog(""); PrintAndLog("Samples:"); - PrintAndLog(" hf legic write 10 4 - writes 0x4 to byte[0x10]"); + PrintAndLog(" hf legic sim"); + PrintAndLog(" hf legic sim "); return 0; } -int usage_legic_rawwrite(void){ - PrintAndLog("Write raw data direct to a specific offset on legic tag."); - PrintAndLog("Usage: hf legic writeraw [h] "); +int usage_legic_write(void){ + PrintAndLog("Write data to a LEGIC Prime tag. It autodetects tagsize to make sure size"); + PrintAndLog("Usage: hf legic write [h] o d "); PrintAndLog("Options:"); - PrintAndLog(" h : this help"); - PrintAndLog(" : offset to write to (hex)"); - PrintAndLog(" : value (hex)"); - PrintAndLog(" : (optional) Initialization vector to use (hex, odd and 7bits)"); + PrintAndLog(" h : this help"); + PrintAndLog(" o : (hex) offset in data array to start writing"); + //PrintAndLog(" : (optional) Initialization vector to use (ODD and 7bits)"); + PrintAndLog(" d : (hex symbols) bytes to write "); PrintAndLog(""); PrintAndLog("Samples:"); - PrintAndLog(" hf legic writeraw 10 4 - writes 0x4 to byte[0x10]"); - return 0; -} -int usage_legic_fill(void){ - PrintAndLog("Missing help text."); + PrintAndLog(" hf legic write o 10 d 11223344 - Write 0x11223344 starting from offset 0x10"); return 0; } int usage_legic_reader(void){ PrintAndLog("Read UID and type information from a legic tag."); PrintAndLog("Usage: hf legic reader [h]"); PrintAndLog("Options:"); - PrintAndLog(" h : this help"); + PrintAndLog(" h : this help"); PrintAndLog(""); PrintAndLog("Samples:"); PrintAndLog(" hf legic reader"); @@ -103,27 +89,76 @@ int usage_legic_info(void){ PrintAndLog("Shows systemarea, user areas etc"); PrintAndLog("Usage: hf legic info [h]"); PrintAndLog("Options:"); - PrintAndLog(" h : this help"); + PrintAndLog(" h : this help"); PrintAndLog(""); PrintAndLog("Samples:"); PrintAndLog(" hf legic info"); return 0; } int usage_legic_dump(void){ - PrintAndLog("Reads all pages from LEGIC MIM22, MIM256, MIM1024"); + PrintAndLog("Reads all pages from LEGIC Prime MIM22, MIM256, MIM1024"); PrintAndLog("and saves binary dump into the file `filename.bin` or `cardUID.bin`"); PrintAndLog("It autodetects card type.\n"); PrintAndLog("Usage: hf legic dump [h] o "); PrintAndLog("Options:"); - PrintAndLog(" h : this help"); - PrintAndLog(" n : filename w/o .bin to save the dump as"); + PrintAndLog(" h : this help"); + PrintAndLog(" o : filename w/o '.bin' to dump bytes"); PrintAndLog(""); PrintAndLog("Samples:"); PrintAndLog(" hf legic dump"); PrintAndLog(" hf legic dump o myfile"); return 0; } - +int usage_legic_restore(void){ + PrintAndLog("Reads binary file and it autodetects card type and verifies that the file has the same size"); + PrintAndLog("Then write the data back to card. All bytes except the first 7bytes [UID(4) MCC(1) DCF(2)]\n"); + PrintAndLog("Usage: hf legic restore [h] i "); + PrintAndLog("Options:"); + PrintAndLog(" h : this help"); + PrintAndLog(" i : filename w/o '.bin' to restore bytes on to card from"); + PrintAndLog(""); + PrintAndLog("Samples:"); + PrintAndLog(" hf legic restore i myfile"); + return 0; +} +int usage_legic_eload(void){ + PrintAndLog("It loads binary dump from the file `filename.bin`"); + PrintAndLog("Usage: hf legic eload [h] [card memory] "); + PrintAndLog("Options:"); + PrintAndLog(" h : this help"); + PrintAndLog(" [card memory] : 0 = MIM22"); + PrintAndLog(" : 1 = MIM256 (default)"); + PrintAndLog(" : 2 = MIM1024"); + PrintAndLog(" : filename w/o .bin to load"); + PrintAndLog(""); + PrintAndLog("Samples:"); + PrintAndLog(" hf legic eload 2 myfile"); + return 0; +} +int usage_legic_esave(void){ + PrintAndLog("It saves binary dump into the file `filename.bin` or `cardID.bin`"); + PrintAndLog(" Usage: hf legic esave [h] [card memory] [file name w/o `.bin`]"); + PrintAndLog("Options:"); + PrintAndLog(" h : this help"); + PrintAndLog(" [card memory] : 0 = MIM22"); + PrintAndLog(" : 1 = MIM256 (default)"); + PrintAndLog(" : 2 = MIM1024"); + PrintAndLog(" : filename w/o .bin to load"); + PrintAndLog(""); + PrintAndLog("Samples:"); + PrintAndLog(" hf legic esave 2 myfile"); + return 0; +} +int usage_legic_wipe(void){ + PrintAndLog("Fills a legic tag memory with zeros. From byte7 and to the end."); + PrintAndLog(" Usage: hf legic wipe [h]"); + PrintAndLog("Options:"); + PrintAndLog(" h : this help"); + PrintAndLog(""); + PrintAndLog("Samples:"); + PrintAndLog(" hf legic wipe"); + return 0; +} /* * Output BigBuf and deobfuscate LEGIC RF tag data. * This is based on information given in the talk held @@ -142,7 +177,7 @@ int CmdLegicInfo(const char *Cmd) { int dcf = 0; int bIsSegmented = 0; - CmdLegicRFRead("0 21 55"); + CmdLegicRdmem("0 22 55"); // copy data from device GetEMLFromBigBuf(data, sizeof(data), 0); @@ -166,6 +201,7 @@ int CmdLegicInfo(const char *Cmd) { (calc_crc == crc) ? "OK":"Fail" ); + // MCD = Manufacturer ID (should be list meaning something?) token_type[0] = 0; dcf = ((int)data[6] << 8) | (int)data[5]; @@ -179,7 +215,7 @@ int CmdLegicInfo(const char *Cmd) { data[6] ); - } else if(dcf > 60000) { // Master token? + } else if (dcf > 60000) { // Master token? int fl = 0; @@ -417,208 +453,81 @@ int CmdLegicInfo(const char *Cmd) { return 0; } -int CmdLegicRFRead(const char *Cmd) { +// params: +// offset in data memory +// number of bytes to read +int CmdLegicRdmem(const char *Cmd) { - // params: - // offset in data memory - // number of bytes to read char cmdp = param_getchar(Cmd, 0); - if ( cmdp == 'H' || cmdp == 'h' ) return usage_legic_read(); + if ( cmdp == 'H' || cmdp == 'h' ) return usage_legic_rdmem(); uint32_t offset = 0, len = 0, IV = 1; sscanf(Cmd, "%x %x %x", &offset, &len, &IV); - // OUT-OF-BOUNDS check - if ( len + offset > MAX_LENGTH ) { - len = MAX_LENGTH - offset; - PrintAndLog("Out-of-bound, shorten len to %d (0x%02X)", len, len); + // tagtype + legic_card_select_t card; + if (legic_get_type(&card)) { + PrintAndLog("Failed to identify tagtype"); + return 1; } - - if ( (IV & 0x7F) != IV ){ - IV &= 0x7F; - PrintAndLog("Truncating IV to 7bits"); + + legic_print_type(card.cardsize, 0); + + // OUT-OF-BOUNDS check + // UID 4 bytes can't be written to. + if ( len + offset >= card.cardsize ) { + len = card.cardsize - offset; + PrintAndLog("Out-of-bounds, Cardsize = %d, Trunc offset+len = %d", card.cardsize, len + offset); } - if ( (IV & 1) == 0 ){ - IV |= 0x01; - PrintAndLog("LSB of IV must be SET"); - } + legic_chk_iv(&IV); UsbCommand c = {CMD_READER_LEGIC_RF, {offset, len, IV}}; clearCommandBuffer(); SendCommand(&c); UsbCommand resp; - if (WaitForResponseTimeout(CMD_ACK, &resp, 3000)) { - uint8_t isOK = resp.arg[0] & 0xFF; - uint16_t readlen = resp.arg[1]; - if ( isOK ) { - - uint8_t *data = malloc(readlen); - if ( !data ){ - PrintAndLog("Cannot allocate memory"); - return 2; - } - - if ( readlen != len ) - PrintAndLog("Fail, only managed to read 0x%02X bytes", readlen); - - // copy data from device - GetEMLFromBigBuf(data, readlen, 0); - if ( !WaitForResponseTimeout(CMD_ACK, NULL, 2500)){ - PrintAndLog("Command execute timeout"); - if ( data ) - free(data); - return 1; - } - - PrintAndLog("\n ## | Data"); - PrintAndLog("-----+-----"); - print_hex_break( data, readlen, 32); - } else { - PrintAndLog("failed reading tag"); - } - } else { + if ( !WaitForResponseTimeout(CMD_ACK, &resp, 3000) ) { PrintAndLog("command execution time out"); return 1; } - return 0; -} - -int CmdLegicLoad(const char *Cmd) { - -// iceman: potential bug, where all filepaths or filename which starts with H or h will print the helptext :) - char cmdp = param_getchar(Cmd, 0); - if ( cmdp == 'H' || cmdp == 'h' || cmdp == 0x00) return usage_legic_load(); - char filename[FILE_PATH_SIZE] = {0x00}; - int len = strlen(Cmd); - - if (len > FILE_PATH_SIZE) { - PrintAndLog("Filepath too long (was %s bytes), max allowed is %s ", len, FILE_PATH_SIZE); - return 0; - } - memcpy(filename, Cmd, len); - - FILE *f = fopen(filename, "r"); - if(!f) { - PrintAndLog("couldn't open '%s'", Cmd); - return -1; - } - - char line[80]; - int offset = 0; - uint8_t data[USB_CMD_DATA_SIZE] = {0x00}; - int index = 0; - int totalbytes = 0; - while ( fgets(line, sizeof(line), f) ) { - int res = sscanf(line, "%x %x %x %x %x %x %x %x", - (unsigned int *)&data[index], - (unsigned int *)&data[index + 1], - (unsigned int *)&data[index + 2], - (unsigned int *)&data[index + 3], - (unsigned int *)&data[index + 4], - (unsigned int *)&data[index + 5], - (unsigned int *)&data[index + 6], - (unsigned int *)&data[index + 7]); - - if(res != 8) { - PrintAndLog("Error: could not read samples"); - fclose(f); - return -1; - } - index += res; - - if ( index == USB_CMD_DATA_SIZE ){ -// PrintAndLog("sent %d | %d | %d", index, offset, totalbytes); - UsbCommand c = { CMD_DOWNLOADED_SIM_SAMPLES_125K, {offset, 0, 0}}; - memcpy(c.d.asBytes, data, sizeof(data)); - clearCommandBuffer(); - SendCommand(&c); - if ( !WaitForResponseTimeout(CMD_ACK, NULL, 1500)){ - PrintAndLog("Command execute timeout"); - fclose(f); - return 1; - } - offset += index; - totalbytes += index; - index = 0; - } - } - fclose(f); - - // left over bytes? - if ( index != 0 ) { - UsbCommand c = { CMD_DOWNLOADED_SIM_SAMPLES_125K, {offset, 0, 0}}; - memcpy(c.d.asBytes, data, 8); - clearCommandBuffer(); - SendCommand(&c); - if ( !WaitForResponseTimeout(CMD_ACK, NULL, 1500)){ - PrintAndLog("Command execute timeout"); - return 1; - } - totalbytes += index; + uint8_t isOK = resp.arg[0] & 0xFF; + uint16_t readlen = resp.arg[1]; + if ( !isOK ) { + PrintAndLog("failed reading tag"); + return 2; } - PrintAndLog("loaded %u samples", totalbytes); - return 0; -} - -int CmdLegicSave(const char *Cmd) { - int requested = 1024; - int offset = 0; - int delivered = 0; - char filename[FILE_PATH_SIZE] = {0x00}; - uint8_t got[1024] = {0x00}; - - memset(filename, 0, FILE_PATH_SIZE); - - sscanf(Cmd, " %s %i %i", filename, &requested, &offset); - - /* If no length given save entire legic read buffer */ - /* round up to nearest 8 bytes so the saved data can be used with legicload */ - if (requested == 0) - requested = 1024; - - if (requested % 8 != 0) { - int remainder = requested % 8; - requested = requested + 8 - remainder; - } - - if (offset + requested > sizeof(got)) { - PrintAndLog("Tried to read past end of buffer, + > 1024"); - return 0; + uint8_t *data = malloc(readlen); + if ( !data ){ + PrintAndLog("Cannot allocate memory"); + return 2; } - - GetFromBigBuf(got, requested, offset); - if ( !WaitForResponseTimeout(CMD_ACK, NULL, 2000)){ - PrintAndLog("Command execute timeout"); + + if ( readlen != len ) + PrintAndLog("Fail, only managed to read 0x%02X bytes", readlen); + + // copy data from device + GetEMLFromBigBuf(data, readlen, 0); + if ( !WaitForResponseTimeout(CMD_ACK, NULL, 2500)){ + PrintAndLog("Command execute timeout"); + free(data); return 1; } - - FILE *f = fopen(filename, "w"); - if(!f) { - PrintAndLog("couldn't open '%s'", Cmd+1); - return -1; - } - for (int j = 0; j < requested; j += 8) { - fprintf(f, "%02x %02x %02x %02x %02x %02x %02x %02x\n", - got[j+0], got[j+1], got[j+2], got[j+3], - got[j+4], got[j+5], got[j+6], got[j+7] - ); - delivered += 8; - if (delivered >= requested) break; - } - - fclose(f); - PrintAndLog("saved %u samples", delivered); + PrintAndLog("\n ## | 0 1 2 3 4 5 6 7 8 9 A B C D E F 10 11 12 13 14 15 16 17 18 19 1A 1B 1C 1D 1E 1F"); + PrintAndLog("-----+------------------------------------------------------------------------------------------------"); + print_hex_break( data, readlen, 32); + free(data); return 0; } -//TODO: write a help text (iceman) +// should say which tagtype +// should load a tag to device mem. +// int phase, int frame, int reqresp int CmdLegicRfSim(const char *Cmd) { UsbCommand c = {CMD_SIMULATE_TAG_LEGIC_RF, {6,3,0}}; - sscanf(Cmd, " %"lli" %"lli" %"lli, &c.arg[0], &c.arg[1], &c.arg[2]); + sscanf(Cmd, " %" SCNi64 " %" SCNi64 " %" SCNi64 , &c.arg[0], &c.arg[1], &c.arg[2]); clearCommandBuffer(); SendCommand(&c); return 0; @@ -626,157 +535,140 @@ int CmdLegicRfSim(const char *Cmd) { int CmdLegicRfWrite(const char *Cmd) { - // params: - // offset - in tag memory - // length - num of bytes to be written - // IV - initialisation vector - - char cmdp = param_getchar(Cmd, 0); - if ( cmdp == 'H' || cmdp == 'h' ) return usage_legic_write(); - - uint32_t offset = 0, len = 0, IV = 0; + uint8_t *data = NULL; + uint8_t cmdp = 0; + bool errors = false; + int len = 0, bg, en; + uint32_t offset = 0, IV = 0x55; - int res = sscanf(Cmd, "%x %x %x", &offset, &len, &IV); - if(res < 2) { - PrintAndLog("Please specify the offset and length as two hex strings and, optionally, the IV also as an hex string"); - return -1; - } + while(param_getchar(Cmd, cmdp) != 0x00) { + switch(param_getchar(Cmd, cmdp)) { + case 'd': + case 'D': + // peek at length of the input string so we can + // figure out how many elements to malloc in "data" + bg=en=0; + if (param_getptr(Cmd, &bg, &en, cmdp+1)) { + errors = true; + break; + } + len = (en - bg + 1); - // OUT-OF-BOUNDS check - if ( len + offset > MAX_LENGTH ) { - len = MAX_LENGTH - offset; - PrintAndLog("Out-of-bound, shorten len to %d (0x%02X)", len, len); - } - if ( (IV & 0x7F) != IV ){ - IV &= 0x7F; - PrintAndLog("Truncating IV to 7bits"); - } - if ( (IV & 1) == 0 ){ - IV |= 0x01; // IV must be odd - PrintAndLog("LSB of IV must be SET"); + // check that user entered even number of characters + // for hex data string + if (len & 1) { + errors = true; + break; + } + + // limit number of bytes to write. This is not a 'restore' command. + if ( (len>>1) > 100 ){ + PrintAndLog("Max bound on 100bytes to write a one time."); + PrintAndLog("Use the 'hf legic restore' command if you want to write the whole tag at once"); + errors = true; + } + + // it's possible for user to accidentally enter "b" parameter + // more than once - we have to clean previous malloc + if (data) + free(data); + + data = malloc(len >> 1); + if ( data == NULL ) { + PrintAndLog("Can't allocate memory. exiting"); + errors = true; + break; + } + + if (param_gethex(Cmd, cmdp+1, data, len)) { + errors = true; + break; + } + + len >>= 1; + cmdp += 2; + break; + case 'o': + case 'O': + offset = param_get32ex(Cmd, cmdp+1, 4, 16); + cmdp += 2; + break; + case 'h': + case 'H': + errors = true; + break; + default: + PrintAndLog("Unknown parameter '%c'", param_getchar(Cmd, cmdp)); + errors = true; + break; + } + if (errors) break; } - - UsbCommand c = {CMD_WRITER_LEGIC_RF, {offset, len, IV}}; - clearCommandBuffer(); - SendCommand(&c); - UsbCommand resp; - if (WaitForResponseTimeout(CMD_ACK, &resp, 2000)) { - uint8_t isOK = resp.arg[0] & 0xFF; - if ( isOK ) { - } else { - PrintAndLog("failed writig tag"); - } - } else { - PrintAndLog("command execution time out"); - return 1; + //Validations + if (errors){ + if (data) + free(data); + return usage_legic_write(); } - - return 0; -} - -int CmdLegicRfRawWrite(const char *Cmd) { - char cmdp = param_getchar(Cmd, 0); - if ( cmdp == 'H' || cmdp == 'h' ) return usage_legic_rawwrite(); - - uint32_t offset = 0, data = 0, IV = 0; - char answer; + // tagtype + legic_card_select_t card; + if (legic_get_type(&card)) { + PrintAndLog("Failed to identify tagtype"); + return -1; + } - int res = sscanf(Cmd, "%x %x %x", &offset, &data, &IV); - if(res < 2) - return usage_legic_rawwrite(); + legic_print_type(card.cardsize, 0); - // OUT-OF-BOUNDS check - if ( offset > MAX_LENGTH ) { - PrintAndLog("Out-of-bound, offset"); - return 1; + // OUT-OF-BOUNDS checks + // UID 4+1 bytes can't be written to. + if ( offset < 5 ) { + PrintAndLog("Out-of-bounds, bytes 0-1-2-3-4 can't be written to. Offset = %d", offset); + return -2; } - if ( (IV & 0x7F) != IV ){ - IV &= 0x7F; - PrintAndLog("Truncating IV to 7bits"); - } - if ( (IV & 1) == 0 ){ - IV |= 0x01; // IV must be odd - PrintAndLog("LSB of IV must be SET"); + if ( len + offset >= card.cardsize ) { + PrintAndLog("Out-of-bounds, Cardsize = %d, [offset+len = %d ]", card.cardsize, len + offset); + return -2; } - UsbCommand c = { CMD_RAW_WRITER_LEGIC_RF, {offset, data, IV} }; - - if (c.arg[0] == 0x05 || c.arg[0] == 0x06) { - PrintAndLog("############# DANGER !! #############"); + if (offset == 5 || offset == 6) { + PrintAndLog("############# DANGER ################"); PrintAndLog("# changing the DCF is irreversible #"); PrintAndLog("#####################################"); - PrintAndLog("do youe really want to continue? y(es) n(o)"); - if (scanf(" %c", &answer) > 0 && (answer == 'y' || answer == 'Y')) { - SendCommand(&c); + char *answer = NULL; + answer = readline("do you really want to continue? y(es) n(o) : "); + bool overwrite = (answer[0] == 'y' || answer[0] == 'Y'); + if (!overwrite){ + PrintAndLog("command cancelled"); return 0; } - return -1; } - clearCommandBuffer(); - SendCommand(&c); - return 0; -} + legic_chk_iv(&IV); + + PrintAndLog("Writing to tag"); -//TODO: write a help text (iceman) -int CmdLegicRfFill(const char *Cmd) { - UsbCommand cmd = {CMD_WRITER_LEGIC_RF, {0,0,0} }; - int res = sscanf(Cmd, " 0x%"llx" 0x%"llx" 0x%"llx, &cmd.arg[0], &cmd.arg[1], &cmd.arg[2]); - if(res != 3) { - PrintAndLog("Please specify the offset, length and value as two hex strings"); - return -1; - } - - int i; - UsbCommand c = {CMD_DOWNLOADED_SIM_SAMPLES_125K, {0, 0, 0}}; - memset(c.d.asBytes, cmd.arg[2], 48); - - for(i = 0; i < 22; i++) { - c.arg[0] = i*48; - - clearCommandBuffer(); - SendCommand(&c); - WaitForResponse(CMD_ACK, NULL); - } + UsbCommand c = {CMD_WRITER_LEGIC_RF, {offset, len, IV}}; + memcpy(c.d.asBytes, data, len); + UsbCommand resp; clearCommandBuffer(); - SendCommand(&cmd); + SendCommand(&c); + + if (!WaitForResponseTimeout(CMD_ACK, &resp, 2000)) { + PrintAndLog("command execution time out"); + return 1; + } + uint8_t isOK = resp.arg[0] & 0xFF; + if ( !isOK ) { + PrintAndLog("failed writing tag"); + return 1; + } + return 0; - } - -void static calc4(uint8_t *cmd, uint8_t len){ - crc_t crc; - //crc_init_ref(&crc, 4, 0x19 >> 1, 0x5, 0, TRUE, TRUE); - crc_init(&crc, 4, 0x19 >> 1, 0x5, 0); - - crc_clear(&crc); - crc_update(&crc, 1, 1); /* CMD_READ */ - crc_update(&crc, cmd[0], 8); - crc_update(&crc, cmd[1], 8); - printf("crc4 %X\n", reflect(crc_finish(&crc), 4) ) ; - - crc_clear(&crc); - crc_update(&crc, 1, 1); /* CMD_READ */ - crc_update(&crc, cmd[0], 8); - crc_update(&crc, cmd[1], 8); - printf("crc4 %X\n", crc_finish(&crc) ) ; - - printf("---- old ---\n"); - crc_update2(&crc, 1, 1); /* CMD_READ */ - crc_update2(&crc, cmd[0], 8); - crc_update2(&crc, cmd[1], 8); - printf("crc4 %X \n", reflect(crc_finish(&crc), 4) ) ; - - - crc_clear(&crc); - crc_update2(&crc, 1, 1); /* CMD_READ */ - crc_update2(&crc, cmd[0], 8); - crc_update2(&crc, cmd[1], 8); - printf("crc4 %X\n", crc_finish(&crc) ) ; -} - -int CmdLegicCalcCrc8(const char *Cmd){ +} + +int CmdLegicCalcCrc(const char *Cmd){ uint8_t *data = NULL; uint8_t cmdp = 0, uidcrc = 0, type=0; @@ -846,16 +738,13 @@ int CmdLegicCalcCrc8(const char *Cmd){ //Validations if (errors){ if (data) free(data); - return usage_legic_calccrc8(); + return usage_legic_calccrc(); } switch (type){ case 16: PrintAndLog("Legic crc16: %X", CRC16Legic(data, len, uidcrc)); break; - case 4: - calc4(data, 0); - break; default: PrintAndLog("Legic crc8: %X", CRC8Legic(data, len) ); break; @@ -864,41 +753,83 @@ int CmdLegicCalcCrc8(const char *Cmd){ if (data) free(data); return 0; } - -int HFLegicReader(const char *Cmd, bool verbose) { - char cmdp = param_getchar(Cmd, 0); - if ( cmdp == 'H' || cmdp == 'h' ) return usage_legic_info(); - +int legic_print_type(uint32_t tagtype, uint8_t spaces){ + char spc[11] = " "; + spc[10]=0x00; + char *spacer = spc + (10-spaces); + + if ( tagtype == 22 ) + PrintAndLog("%sTYPE : MIM%d card (outdated)", spacer, tagtype); + else if ( tagtype == 256 ) + PrintAndLog("%sTYPE : MIM%d card (234 bytes)", spacer, tagtype); + else if ( tagtype == 1024 ) + PrintAndLog("%sTYPE : MIM%d card (1002 bytes)", spacer, tagtype); + else + PrintAndLog("%sTYPE : Unknown %06x", spacer, tagtype); + return 0; +} +int legic_get_type(legic_card_select_t *card){ + + if ( card == NULL ) return 1; + UsbCommand c = {CMD_LEGIC_INFO, {0,0,0}}; clearCommandBuffer(); SendCommand(&c); UsbCommand resp; - if (!WaitForResponseTimeout(CMD_ACK, &resp, 500)) { - if ( verbose ) PrintAndLog("command execution time out"); - return 1; - } + if (!WaitForResponseTimeout(CMD_ACK, &resp, 500)) + return 2; uint8_t isOK = resp.arg[0] & 0xFF; - if ( !isOK ) { - if ( verbose ) PrintAndLog("legic card select failed"); - return 1; + if ( !isOK ) + return 3; + + memcpy(card, (legic_card_select_t *)resp.d.asBytes, sizeof(legic_card_select_t)); + return 0; +} +void legic_chk_iv(uint32_t *iv){ + if ( (*iv & 0x7F) != *iv ){ + *iv &= 0x7F; + PrintAndLog("Truncating IV to 7bits, %u", *iv); + } + // IV must be odd + if ( (*iv & 1) == 0 ){ + *iv |= 0x01; + PrintAndLog("LSB of IV must be SET %u", *iv); + } +} +void legic_seteml(uint8_t *src, uint32_t offset, uint32_t numofbytes) { + size_t len = 0; + UsbCommand c = {CMD_LEGIC_ESET, {0, 0, 0}}; + for(size_t i = 0; i < numofbytes; i += USB_CMD_DATA_SIZE) { + + len = MIN((numofbytes - i), USB_CMD_DATA_SIZE); + c.arg[0] = i; // offset + c.arg[1] = len; // number of bytes + memcpy(c.d.asBytes, src+i, len); + clearCommandBuffer(); + SendCommand(&c); } +} + +int HFLegicReader(const char *Cmd, bool verbose) { + + char cmdp = param_getchar(Cmd, 0); + if ( cmdp == 'H' || cmdp == 'h' ) return usage_legic_reader(); legic_card_select_t card; - memcpy(&card, (legic_card_select_t *)resp.d.asBytes, sizeof(legic_card_select_t)); - - PrintAndLog(" UID : %s", sprint_hex(card.uid, sizeof(card.uid))); - switch(card.cardsize) { - case 22: - case 256: - case 1024: - PrintAndLog(" TYPE : MIM%d card (%d bytes)", card.cardsize, card.cardsize); break; - default: { - PrintAndLog("Unknown card format: %d", card.cardsize); + switch(legic_get_type(&card)){ + case 1: + if ( verbose ) PrintAndLog("command execution time out"); return 1; - } + case 2: + case 3: + if ( verbose ) PrintAndLog("legic card select failed"); + return 2; + default: break; } + PrintAndLog(" UID : %s", sprint_hex(card.uid, sizeof(card.uid))); + legic_print_type(card.cardsize, 0); return 0; } int CmdLegicReader(const char *Cmd){ @@ -906,24 +837,431 @@ int CmdLegicReader(const char *Cmd){ } int CmdLegicDump(const char *Cmd){ - char cmdp = param_getchar(Cmd, 0); - if ( cmdp == 'H' || cmdp == 'h' ) return usage_legic_dump(); + + FILE *f; + char filename[FILE_PATH_SIZE] = {0x00}; + char *fnameptr = filename; + size_t fileNlen = 0; + bool errors = false; + uint16_t dumplen; + uint8_t cmdp = 0; + + memset(filename, 0, sizeof(filename)); + + while(param_getchar(Cmd, cmdp) != 0x00) { + switch(param_getchar(Cmd, cmdp)) { + case 'h': + case 'H': + return usage_legic_dump(); + case 'o': + case 'O': + fileNlen = param_getstr(Cmd, cmdp+1, filename); + if (!fileNlen) + errors = true; + if (fileNlen > FILE_PATH_SIZE-5) + fileNlen = FILE_PATH_SIZE-5; + cmdp += 2; + break; + default: + PrintAndLog("Unknown parameter '%c'", param_getchar(Cmd, cmdp)); + errors = true; + break; + } + if(errors) break; + } + + //Validations + if(errors) return usage_legic_dump(); + + // tagtype + legic_card_select_t card; + if (legic_get_type(&card)) { + PrintAndLog("Failed to identify tagtype"); + return -1; + } + dumplen = card.cardsize; + + legic_print_type(dumplen, 0); + PrintAndLog("Reading tag memory..."); + + UsbCommand c = {CMD_READER_LEGIC_RF, {0x00, dumplen, 0x55}}; + clearCommandBuffer(); + SendCommand(&c); + UsbCommand resp; + if (!WaitForResponseTimeout(CMD_ACK, &resp, 3000)) { + PrintAndLog("Command execute time-out"); + return 1; + } + + uint8_t isOK = resp.arg[0] & 0xFF; + if ( !isOK ) { + PrintAndLog("Failed dumping tag data"); + return 2; + } + + uint16_t readlen = resp.arg[1]; + uint8_t *data = malloc(readlen); + if (!data) { + PrintAndLog("Fail, cannot allocate memory"); + return 3; + } + memset(data, 0, readlen); + + if ( readlen != dumplen ) + PrintAndLog("Fail, only managed to read 0x%02X bytes of 0x%02X", readlen, dumplen); + + // copy data from device + GetEMLFromBigBuf(data, readlen, 0); + if ( !WaitForResponseTimeout(CMD_ACK, NULL, 2500)) { + PrintAndLog("Fail, transfer from device time-out"); + free(data); + return 4; + } + + // user supplied filename? + if (fileNlen < 1) + sprintf(fnameptr,"%02X%02X%02X%02X.bin", data[0], data[1], data[2], data[3]); + else + sprintf(fnameptr + fileNlen,".bin"); + + f = fopen(filename,"wb"); + if (!f) { + PrintAndLog("Could not create file name %s", filename); + if (data) + free(data); + return 5; + } + fwrite(data, 1, readlen, f); + fclose(f); + free(data); + PrintAndLog("Wrote %d bytes to %s", readlen, filename); return 0; } + +int CmdLegicRestore(const char *Cmd){ + + FILE *f; + char filename[FILE_PATH_SIZE] = {0x00}; + char *fnameptr = filename; + size_t fileNlen = 0; + bool errors = true; + uint16_t numofbytes; + uint8_t cmdp = 0; + + memset(filename, 0, sizeof(filename)); + while(param_getchar(Cmd, cmdp) != 0x00) { + switch(param_getchar(Cmd, cmdp)) { + case 'h': + case 'H': + errors = true; + break; + case 'i': + case 'I': + fileNlen = param_getstr(Cmd, cmdp+1, filename); + if (!fileNlen) + errors = true; + else + errors = false; + + if (fileNlen > FILE_PATH_SIZE-5) + fileNlen = FILE_PATH_SIZE-5; + cmdp += 2; + break; + default: + PrintAndLog("Unknown parameter '%c'", param_getchar(Cmd, cmdp)); + errors = true; + break; + } + if (errors) break; + } + + //Validations + if(errors) return usage_legic_restore(); + + // tagtype + legic_card_select_t card; + if (legic_get_type(&card)) { + PrintAndLog("Failed to identify tagtype"); + return 1; + } + numofbytes = card.cardsize; + + // set up buffer + uint8_t *data = malloc(numofbytes); + if (!data) { + PrintAndLog("Fail, cannot allocate memory"); + return 2; + } + memset(data, 0, numofbytes); + + legic_print_type(numofbytes, 0); + + // set up file + fnameptr += fileNlen; + sprintf(fnameptr, ".bin"); + + f = fopen(filename,"rb"); + if (!f) { + PrintAndLog("File %s not found or locked", filename); + return 3; + } + + // verify size of dumpfile is the same as card. + fseek(f, 0, SEEK_END); // seek to end of file + size_t filesize = ftell(f); // get current file pointer + fseek(f, 0, SEEK_SET); // seek back to beginning of file + + if ( filesize != numofbytes) { + PrintAndLog("Fail, filesize and cardsize is not equal. [%u != %u]", filesize, numofbytes); + free(data); + fclose(f); + return 4; + } + + // load file + size_t bytes_read = fread(data, 1, numofbytes, f); + fclose(f); + + if ( bytes_read == 0){ + PrintAndLog("File reading error"); + free(data); + return 2; + } + + PrintAndLog("Restoring to card"); + + // transfer to device + size_t len = 0; + UsbCommand c = {CMD_WRITER_LEGIC_RF, {0, 0, 0x55}}; + UsbCommand resp; + for(size_t i = 7; i < numofbytes; i += USB_CMD_DATA_SIZE) { + + len = MIN((numofbytes - i), USB_CMD_DATA_SIZE); + c.arg[0] = i; // offset + c.arg[1] = len; // number of bytes + memcpy(c.d.asBytes, data+i, len); + clearCommandBuffer(); + SendCommand(&c); + + if (!WaitForResponseTimeout(CMD_ACK, &resp, 4000)) { + PrintAndLog("command execution time out"); + free(data); + return 1; + } + uint8_t isOK = resp.arg[0] & 0xFF; + if ( !isOK ) { + PrintAndLog("failed writing tag [msg = %u]", resp.arg[1] & 0xFF); + free(data); + return 1; + } + PrintAndLog("Wrote chunk [offset %d | len %d | total %d", i, len, i+len); + } + + free(data); + PrintAndLog("\nWrote %d bytes to card from file %s", numofbytes, filename); + return 0; +} + +int CmdLegicELoad(const char *Cmd) { + FILE * f; + char filename[FILE_PATH_SIZE]; + char *fnameptr = filename; + int len, numofbytes; + int nameParamNo = 1; + + char cmdp = param_getchar(Cmd, 0); + if ( cmdp == 'h' || cmdp == 'H' || cmdp == 0x00) + return usage_legic_eload(); + + switch (cmdp) { + case '0' : numofbytes = 22; break; + case '1' : + case '\0': numofbytes = 256; break; + case '2' : numofbytes = 1024; break; + default : numofbytes = 256; nameParamNo = 0;break; + } + + // set up buffer + uint8_t *data = malloc(numofbytes); + if (!data) { + PrintAndLog("Fail, cannot allocate memory"); + return 3; + } + memset(data, 0, numofbytes); + + // set up file + len = param_getstr(Cmd, nameParamNo, filename); + if (len > FILE_PATH_SIZE - 5) + len = FILE_PATH_SIZE - 5; + fnameptr += len; + sprintf(fnameptr, ".bin"); + + // open file + f = fopen(filename,"rb"); + if (!f) { + PrintAndLog("File %s not found or locked", filename); + free(data); + return 1; + } + + // load file + size_t bytes_read = fread(data, 1, numofbytes, f); + if ( bytes_read == 0){ + PrintAndLog("File reading error"); + free(data); + fclose(f); + f = NULL; + return 2; + } + fclose(f); + f = NULL; + + // transfer to device + legic_seteml(data, 0, numofbytes); + + free(data); + PrintAndLog("\nLoaded %d bytes from file: %s to emulator memory", numofbytes, filename); + return 0; +} + +int CmdLegicESave(const char *Cmd) { + FILE *f; + char filename[FILE_PATH_SIZE]; + char *fnameptr = filename; + int fileNlen, numofbytes, nameParamNo = 1; + + memset(filename, 0, sizeof(filename)); + + char cmdp = param_getchar(Cmd, 0); + + if ( cmdp == 'h' || cmdp == 'H' || cmdp == 0x00) + return usage_legic_esave(); + + switch (cmdp) { + case '0' : numofbytes = 22; break; + case '1' : + case '\0': numofbytes = 256; break; + case '2' : numofbytes = 1024; break; + default : numofbytes = 256; nameParamNo = 0; break; + } + + fileNlen = param_getstr(Cmd, nameParamNo, filename); + + if (fileNlen > FILE_PATH_SIZE - 5) + fileNlen = FILE_PATH_SIZE - 5; + + // set up buffer + uint8_t *data = malloc(numofbytes); + if (!data) { + PrintAndLog("Fail, cannot allocate memory"); + return 3; + } + memset(data, 0, numofbytes); + + // download emulator memory + PrintAndLog("Reading emulator memory..."); + GetEMLFromBigBuf(data, numofbytes, 0); + if ( !WaitForResponseTimeout(CMD_ACK, NULL, 2500)) { + PrintAndLog("Fail, transfer from device time-out"); + free(data); + return 4; + } + + // user supplied filename? + if (fileNlen < 1) + sprintf(fnameptr,"%02X%02X%02X%02X.bin", data[0], data[1], data[2], data[3]); + else + sprintf(fnameptr + fileNlen,".bin"); + + // open file + f = fopen(filename,"wb"); + if (!f) { + PrintAndLog("Could not create file name %s", filename); + free(data); + return 1; + } + fwrite(data, 1, numofbytes, f); + fclose(f); + free(data); + PrintAndLog("\nSaved %d bytes from emulator memory to file: %s", numofbytes, filename); + return 0; +} + +int CmdLegicWipe(const char *Cmd){ + + char cmdp = param_getchar(Cmd, 0); + + if ( cmdp == 'h' || cmdp == 'H') return usage_legic_wipe(); + + // tagtype + legic_card_select_t card; + if (legic_get_type(&card)) { + PrintAndLog("Failed to identify tagtype"); + return 1; + } + + // set up buffer + uint8_t *data = malloc(card.cardsize); + if (!data) { + PrintAndLog("Fail, cannot allocate memory"); + return 2; + } + memset(data, 0, card.cardsize); + + legic_print_type(card.cardsize, 0); + + printf("Erasing"); + + // transfer to device + size_t len = 0; + UsbCommand c = {CMD_WRITER_LEGIC_RF, {0, 0, 0x55}}; + UsbCommand resp; + for(size_t i = 7; i < card.cardsize; i += USB_CMD_DATA_SIZE) { + + printf("."); + len = MIN((card.cardsize - i), USB_CMD_DATA_SIZE); + c.arg[0] = i; // offset + c.arg[1] = len; // number of bytes + memcpy(c.d.asBytes, data+i, len); + clearCommandBuffer(); + SendCommand(&c); + + if (!WaitForResponseTimeout(CMD_ACK, &resp, 4000)) { + PrintAndLog("command execution time out"); + free(data); + return 3; + } + uint8_t isOK = resp.arg[0] & 0xFF; + if ( !isOK ) { + PrintAndLog("failed writing tag [msg = %u]", resp.arg[1] & 0xFF); + free(data); + return 4; + } + } + printf("ok\n"); + return 0; +} + +int CmdLegicList(const char *Cmd) { + CmdHFList("legic"); + return 0; +} + static command_t CommandTable[] = { {"help", CmdHelp, 1, "This help"}, - {"reader", CmdLegicReader, 1, "LEGIC Prime Reader UID and Type tag info"}, + {"reader", CmdLegicReader, 1, "LEGIC Prime Reader UID and tag info"}, {"info", CmdLegicInfo, 0, "Display deobfuscated and decoded LEGIC Prime tag data"}, - {"dump", CmdLegicDump, 0, "Dump LEGIC Prime card to binary file"}, - {"rdmem", CmdLegicRFRead, 0, "[offset][length] -- read bytes from a LEGIC card"}, - {"save", CmdLegicSave, 0, " [] -- Store samples"}, - {"load", CmdLegicLoad, 0, " -- Restore samples"}, - {"sim", CmdLegicRfSim, 0, "[phase drift [frame drift [req/resp drift]]] Start tag simulator (use after load or read)"}, - {"write", CmdLegicRfWrite, 0, " -- Write sample buffer (user after load or read)"}, - {"writeraw",CmdLegicRfRawWrite, 0, "
-- Write direct to address"}, - {"fill", CmdLegicRfFill, 0, " -- Fill/Write tag with constant value"}, - {"crc8", CmdLegicCalcCrc8, 1, "Calculate Legic CRC8 over given hexbytes"}, + {"dump", CmdLegicDump, 0, "Dump LEGIC Prime tag to binary file"}, + {"restore", CmdLegicRestore, 0, "Restore a dump onto a LEGIC Prime tag"}, + {"rdmem", CmdLegicRdmem, 0, "Read bytes from a LEGIC Prime tag"}, + {"sim", CmdLegicRfSim, 0, "Start tag simulator"}, + {"write", CmdLegicRfWrite, 0, "Write data to a LEGIC Prime tag"}, + {"crc", CmdLegicCalcCrc, 1, "Calculate Legic CRC over given bytes"}, + {"eload", CmdLegicELoad, 1, "Load binary dump to emulator memory"}, + {"esave", CmdLegicESave, 1, "Save emulator memory to binary file"}, + {"list", CmdLegicList, 1, "[Deprecated] List LEGIC history"}, + {"wipe", CmdLegicWipe, 1, "Wipe a LEGIC Prime tag"}, {NULL, NULL, 0, NULL} };