X-Git-Url: https://git.zerfleddert.de/cgi-bin/gitweb.cgi/proxmark3-svn/blobdiff_plain/d7e24e7c5f3481a45d79de49ad3de2ef0d81437e..27c4a862f6a216d4b054fefa6897b0fa62611f30:/client/cmdhflegic.c diff --git a/client/cmdhflegic.c b/client/cmdhflegic.c index 5bc24e9b..50c2976f 100644 --- a/client/cmdhflegic.c +++ b/client/cmdhflegic.c @@ -11,13 +11,12 @@ static int CmdHelp(const char *Cmd); -#define SESSION_IV 0x55 #define MAX_LENGTH 1024 -int usage_legic_calccrc8(void){ +int usage_legic_calccrc(void){ PrintAndLog("Calculates the legic crc8/crc16 on the input hexbytes."); 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] b u c "); PrintAndLog("Options:"); PrintAndLog(" h : this help"); PrintAndLog(" b : hex bytes"); @@ -25,8 +24,8 @@ int usage_legic_calccrc8(void){ PrintAndLog(" c : 8|16 bit crc size"); 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){ @@ -40,18 +39,19 @@ int usage_legic_load(void){ 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"); - PrintAndLog(" : number of bytes to download"); - PrintAndLog(" : (optional) Initialization vector to use (ODD and 7bits)"); + 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(""); PrintAndLog("Samples:"); - PrintAndLog(" hf legic read"); - PrintAndLog(" hf legic read 10 4"); + PrintAndLog(" hf legic rdmem 0 21 - reads from byte[0] 21 bytes(system header)"); + PrintAndLog(" hf legic rdmem 0 4 55 - reads from byte[0] 4 bytes with IV 0x55"); + PrintAndLog(" hf legic rdmem 0 100 55 - reads 256bytes with IV 0x55"); return 0; } int usage_legic_sim(void){ @@ -60,38 +60,30 @@ int usage_legic_sim(void){ } 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("Usage: hf legic write [h] o d "); PrintAndLog("Options:"); PrintAndLog(" h : this help"); - PrintAndLog(" : offset in data array to start writing from"); - PrintAndLog(" : number of bytes to write"); - PrintAndLog(" : (optional) Initialization vector to use (ODD and 7bits)"); + PrintAndLog(" o : offset in data array to start writing"); + //PrintAndLog(" : (optional) Initialization vector to use (ODD and 7bits)"); + PrintAndLog(" d : bytes to write (hex symbols)"); PrintAndLog(""); PrintAndLog("Samples:"); - PrintAndLog(" hf legic write"); - PrintAndLog(" hf legic write 10 4"); + PrintAndLog(" hf legic write o 10 d 11223344 - Write 0x11223344 starting from offset 0x10"); return 0; } -int usage_legic_rawwrite(void){ - PrintAndLog("Write raw data direct to a specific address on legic tag."); - PrintAndLog("Usage: hf legic writeraw [h]
"); +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("
: address to write to"); - PrintAndLog(" : value to write"); - PrintAndLog(" : (optional) Initialization vector to use (ODD and 7bits)"); PrintAndLog(""); PrintAndLog("Samples:"); - PrintAndLog(" hf legic writeraw"); - PrintAndLog(" hf legic writeraw 10 4"); - return 0; -} -int usage_legic_fill(void){ - PrintAndLog("Missing help text."); + PrintAndLog(" hf legic reader"); return 0; } int usage_legic_info(void){ - PrintAndLog("Read info from a legic tag."); + PrintAndLog("Reads information from a legic prime tag."); + PrintAndLog("Shows systemarea, user areas etc"); PrintAndLog("Usage: hf legic info [h]"); PrintAndLog("Options:"); PrintAndLog(" h : this help"); @@ -100,96 +92,148 @@ int usage_legic_info(void){ PrintAndLog(" hf legic info"); return 0; } +int usage_legic_dump(void){ + PrintAndLog("Reads all pages from LEGIC 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(""); + PrintAndLog("Samples:"); + PrintAndLog(" hf legic dump"); + PrintAndLog(" hf legic dump o 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 filename"); + PrintAndLog(" hf legic eload 2 filename"); + 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 "); + PrintAndLog(" hf legic esave 2"); + PrintAndLog(" hf legic esave 2 filename"); + return 0; +} + /* * Output BigBuf and deobfuscate LEGIC RF tag data. * This is based on information given in the talk held * by Henryk Ploetz and Karsten Nohl at 26c3 */ -int CmdLegicDecode(const char *Cmd) { +int CmdLegicInfo(const char *Cmd) { + + char cmdp = param_getchar(Cmd, 0); + if ( cmdp == 'H' || cmdp == 'h' ) return usage_legic_info(); int i = 0, k = 0, segmentNum = 0, segment_len = 0, segment_flag = 0; int crc = 0, wrp = 0, wrc = 0; uint8_t stamp_len = 0; - uint8_t data_buf[1024]; // receiver buffer + uint8_t data[1024]; // receiver buffer char token_type[5] = {0,0,0,0,0}; int dcf = 0; int bIsSegmented = 0; - // copy data from proxmark into buffer - GetFromBigBuf(data_buf,sizeof(data_buf),0); + CmdLegicRdmem("0 22 55"); + + // copy data from device + GetEMLFromBigBuf(data, sizeof(data), 0); if ( !WaitForResponseTimeout(CMD_ACK, NULL, 2000)){ PrintAndLog("Command execute timeout"); return 1; } // Output CDF System area (9 bytes) plus remaining header area (12 bytes) - crc = data_buf[4]; - uint32_t calc_crc = CRC8Legic(data_buf, 4); + crc = data[4]; + uint32_t calc_crc = CRC8Legic(data, 4); PrintAndLog("\nCDF: System Area"); PrintAndLog("------------------------------------------------------"); PrintAndLog("MCD: %02x, MSN: %02x %02x %02x, MCC: %02x %s", - data_buf[0], - data_buf[1], - data_buf[2], - data_buf[3], - data_buf[4], - (calc_crc == crc) ? "OK":"Fail" + data[0], + data[1], + data[2], + data[3], + data[4], + (calc_crc == crc) ? "OK":"Fail" ); + // MCD = Manufacturer ID (should be list meaning something?) token_type[0] = 0; - dcf = ((int)data_buf[6] << 8) | (int)data_buf[5]; + dcf = ((int)data[6] << 8) | (int)data[5]; // New unwritten media? if(dcf == 0xFFFF) { PrintAndLog("DCF: %d (%02x %02x), Token Type=NM (New Media)", dcf, - data_buf[5], - data_buf[6] + data[5], + data[6] ); } else if(dcf > 60000) { // Master token? int fl = 0; - if(data_buf[6] == 0xec) { + if(data[6] == 0xec) { strncpy(token_type, "XAM", sizeof(token_type)); fl = 1; - stamp_len = 0x0c - (data_buf[5] >> 4); + stamp_len = 0x0c - (data[5] >> 4); } else { - switch (data_buf[5] & 0x7f) { + switch (data[5] & 0x7f) { case 0x00 ... 0x2f: strncpy(token_type, "IAM", sizeof(token_type)); - fl = (0x2f - (data_buf[5] & 0x7f)) + 1; + fl = (0x2f - (data[5] & 0x7f)) + 1; break; case 0x30 ... 0x6f: strncpy(token_type, "SAM", sizeof(token_type)); - fl = (0x6f - (data_buf[5] & 0x7f)) + 1; + fl = (0x6f - (data[5] & 0x7f)) + 1; break; case 0x70 ... 0x7f: strncpy(token_type, "GAM", sizeof(token_type)); - fl = (0x7f - (data_buf[5] & 0x7f)) + 1; + fl = (0x7f - (data[5] & 0x7f)) + 1; break; } - stamp_len = 0xfc - data_buf[6]; + stamp_len = 0xfc - data[6]; } PrintAndLog("DCF: %d (%02x %02x), Token Type=%s (OLE=%01u), OL=%02u, FL=%02u", dcf, - data_buf[5], - data_buf[6], + data[5], + data[6], token_type, - (data_buf[5] & 0x80 )>> 7, + (data[5] & 0x80 )>> 7, stamp_len, fl ); } else { // Is IM(-S) type of card... - if(data_buf[7] == 0x9F && data_buf[8] == 0xFF) { + if(data[7] == 0x9F && data[8] == 0xFF) { bIsSegmented = 1; strncpy(token_type, "IM-S", sizeof(token_type)); } else { @@ -198,10 +242,10 @@ int CmdLegicDecode(const char *Cmd) { PrintAndLog("DCF: %d (%02x %02x), Token Type=%s (OLE=%01u)", dcf, - data_buf[5], - data_buf[6], + data[5], + data[6], token_type, - (data_buf[5]&0x80) >> 7 + (data[5]&0x80) >> 7 ); } @@ -210,10 +254,10 @@ int CmdLegicDecode(const char *Cmd) { if(bIsSegmented) { PrintAndLog("WRP=%02u, WRC=%01u, RD=%01u, SSC=%02x", - data_buf[7] & 0x0f, - (data_buf[7] & 0x70) >> 4, - (data_buf[7] & 0x80) >> 7, - data_buf[8] + data[7] & 0x0f, + (data[7] & 0x70) >> 4, + (data[7] & 0x80) >> 7, + data[8] ); } @@ -221,10 +265,10 @@ int CmdLegicDecode(const char *Cmd) { if(bIsSegmented || dcf > 60000) { if(dcf > 60000) { PrintAndLog("Master token data"); - PrintAndLog("%s", sprint_hex(data_buf+8, 14)); + PrintAndLog("%s", sprint_hex(data+8, 14)); } else { PrintAndLog("Remaining Header Area"); - PrintAndLog("%s", sprint_hex(data_buf+9, 13)); + PrintAndLog("%s", sprint_hex(data+9, 13)); } } } @@ -247,10 +291,10 @@ int CmdLegicDecode(const char *Cmd) { // decode segments for (segmentNum=1; segmentNum < 128; segmentNum++ ) { - segment_len = ((data_buf[i+1] ^ crc) & 0x0f) * 256 + (data_buf[i] ^ crc); - segment_flag = ((data_buf[i+1] ^ crc) & 0xf0) >> 4; - wrp = (data_buf[i+2] ^ crc); - wrc = ((data_buf[i+3] ^ crc) & 0x70) >> 4; + segment_len = ((data[i+1] ^ crc) & 0x0f) * 256 + (data[i] ^ crc); + segment_flag = ((data[i+1] ^ crc) & 0xf0) >> 4; + wrp = (data[i+2] ^ crc); + wrc = ((data[i+3] ^ crc) & 0x70) >> 4; bool hasWRC = (wrc > 0); bool hasWRP = (wrp > wrc); @@ -258,31 +302,31 @@ int CmdLegicDecode(const char *Cmd) { int remain_seg_payload_len = (segment_len - wrp - 5); // validate segment-crc - segCrcBytes[0]=data_buf[0]; //uid0 - segCrcBytes[1]=data_buf[1]; //uid1 - segCrcBytes[2]=data_buf[2]; //uid2 - segCrcBytes[3]=data_buf[3]; //uid3 - segCrcBytes[4]=(data_buf[i] ^ crc); //hdr0 - segCrcBytes[5]=(data_buf[i+1] ^ crc); //hdr1 - segCrcBytes[6]=(data_buf[i+2] ^ crc); //hdr2 - segCrcBytes[7]=(data_buf[i+3] ^ crc); //hdr3 + segCrcBytes[0]=data[0]; //uid0 + segCrcBytes[1]=data[1]; //uid1 + segCrcBytes[2]=data[2]; //uid2 + segCrcBytes[3]=data[3]; //uid3 + segCrcBytes[4]=(data[i] ^ crc); //hdr0 + segCrcBytes[5]=(data[i+1] ^ crc); //hdr1 + segCrcBytes[6]=(data[i+2] ^ crc); //hdr2 + segCrcBytes[7]=(data[i+3] ^ crc); //hdr3 segCalcCRC = CRC8Legic(segCrcBytes, 8); - segCRC = data_buf[i+4] ^ crc; + segCRC = data[i+4] ^ crc; PrintAndLog("Segment %02u \nraw header | 0x%02X 0x%02X 0x%02X 0x%02X \nSegment len: %u, Flag: 0x%X (valid:%01u, last:%01u), WRP: %02u, WRC: %02u, RD: %01u, CRC: 0x%02X (%s)", segmentNum, - data_buf[i] ^ crc, - data_buf[i+1] ^ crc, - data_buf[i+2] ^ crc, - data_buf[i+3] ^ crc, + data[i] ^ crc, + data[i+1] ^ crc, + data[i+2] ^ crc, + data[i+3] ^ crc, segment_len, segment_flag, (segment_flag & 0x4) >> 2, (segment_flag & 0x8) >> 3, wrp, wrc, - ((data_buf[i+3]^crc) & 0x80) >> 7, + ((data[i+3]^crc) & 0x80) >> 7, segCRC, ( segCRC == segCalcCRC ) ? "OK" : "fail" ); @@ -295,9 +339,9 @@ int CmdLegicDecode(const char *Cmd) { PrintAndLog("-----+------------------------------------------------"); for ( k=i; k < (i + wrc); ++k) - data_buf[k] ^= crc; + data[k] ^= crc; - print_hex_break( data_buf+i, wrc, 16); + print_hex_break( data+i, wrc, 16); i += wrc; } @@ -308,15 +352,15 @@ int CmdLegicDecode(const char *Cmd) { PrintAndLog("-----+------------------------------------------------"); for (k=i; k < (i+wrp_len); ++k) - data_buf[k] ^= crc; + data[k] ^= crc; - print_hex_break( data_buf+i, wrp_len, 16); + print_hex_break( data+i, wrp_len, 16); i += wrp_len; // does this one work? (Answer: Only if KGH/BGH is used with BCD encoded card number! So maybe this will show just garbage...) if( wrp_len == 8 ) - PrintAndLog("Card ID: %2X%02X%02X", data_buf[i-4]^crc, data_buf[i-3]^crc, data_buf[i-2]^crc); + PrintAndLog("Card ID: %2X%02X%02X", data[i-4]^crc, data[i-3]^crc, data[i-2]^crc); } PrintAndLog("Remaining segment payload: (I %d | K %d | Remain LEN %d)", i, k, remain_seg_payload_len); @@ -324,9 +368,9 @@ int CmdLegicDecode(const char *Cmd) { PrintAndLog("-----+------------------------------------------------"); for ( k=i; k < (i+remain_seg_payload_len); ++k) - data_buf[k] ^= crc; + data[k] ^= crc; - print_hex_break( data_buf+i, remain_seg_payload_len, 16); + print_hex_break( data+i, remain_seg_payload_len, 16); i += remain_seg_payload_len; @@ -342,8 +386,8 @@ int CmdLegicDecode(const char *Cmd) { // Data start point on unsegmented cards i = 8; - wrp = data_buf[7] & 0x0F; - wrc = (data_buf[7] & 0x70) >> 4; + wrp = data[7] & 0x0F; + wrc = (data[7] & 0x70) >> 4; bool hasWRC = (wrc > 0); bool hasWRP = (wrp > wrc); @@ -353,14 +397,14 @@ int CmdLegicDecode(const char *Cmd) { PrintAndLog("Unsegmented card - WRP: %02u, WRC: %02u, RD: %01u", wrp, wrc, - (data_buf[7] & 0x80) >> 7 + (data[7] & 0x80) >> 7 ); if ( hasWRC ) { PrintAndLog("WRC protected area: (I %d | WRC %d)", i, wrc); PrintAndLog("\nrow | data"); PrintAndLog("-----+------------------------------------------------"); - print_hex_break( data_buf+i, wrc, 16); + print_hex_break( data+i, wrc, 16); i += wrc; } @@ -368,18 +412,18 @@ int CmdLegicDecode(const char *Cmd) { PrintAndLog("Remaining write protected area: (I %d | WRC %d | WRP %d | WRP_LEN %d)", i, wrc, wrp, wrp_len); PrintAndLog("\nrow | data"); PrintAndLog("-----+------------------------------------------------"); - print_hex_break( data_buf + i, wrp_len, 16); + print_hex_break( data + i, wrp_len, 16); i += wrp_len; // does this one work? (Answer: Only if KGH/BGH is used with BCD encoded card number! So maybe this will show just garbage...) if( wrp_len == 8 ) - PrintAndLog("Card ID: %2X%02X%02X", data_buf[i-4], data_buf[i-3], data_buf[i-2]); + PrintAndLog("Card ID: %2X%02X%02X", data[i-4], data[i-3], data[i-2]); } PrintAndLog("Remaining segment payload: (I %d | Remain LEN %d)", i, remain_seg_payload_len); PrintAndLog("\nrow | data"); PrintAndLog("-----+------------------------------------------------"); - print_hex_break( data_buf + i, remain_seg_payload_len, 16); + print_hex_break( data + i, remain_seg_payload_len, 16); i += remain_seg_payload_len; PrintAndLog("-----+------------------------------------------------\n"); @@ -388,52 +432,67 @@ int CmdLegicDecode(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 - // number of bytes. 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; - - 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 > MAX_LENGTH ) { + len = MAX_LENGTH - offset; + PrintAndLog("Out-of-bound, shorten len to %d (0x%02X)", len, len); } - PrintAndLog("Using IV: 0x%02x", IV); + + legic_chk_iv(&IV); UsbCommand c = {CMD_READER_LEGIC_RF, {offset, len, IV}}; clearCommandBuffer(); SendCommand(&c); UsbCommand resp; - if (WaitForResponseTimeout(CMD_ACK, &resp, 2000)) { - uint8_t isOK = resp.arg[0] & 0xFF; - uint16_t len = resp.arg[1] & 0x3FF; - if ( isOK ) { - PrintAndLog("use 'hf legic decode'"); - } - uint8_t *data = resp.d.asBytes; - PrintAndLog("\nData |"); - PrintAndLog("-----------------------------"); - PrintAndLog(" %s|\n", sprint_hex(data, len)); - // } - } else { + if ( !WaitForResponseTimeout(CMD_ACK, &resp, 3000) ) { PrintAndLog("command execution time out"); return 1; } + + uint8_t isOK = resp.arg[0] & 0xFF; + uint16_t readlen = resp.arg[1]; + if ( !isOK ) { + PrintAndLog("failed reading tag"); + return 2; + } + + 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"); + free(data); + return 1; + } + + PrintAndLog("\n ## | Data"); + PrintAndLog("-----+-----"); + print_hex_break( data, readlen, 32); + free(data); return 0; } +// load, filename (ascii hex textfile) +// uploads it to device mem int CmdLegicLoad(const char *Cmd) { // iceman: potential bug, where all filepaths or filename which starts with H or h will print the helptext :) @@ -479,7 +538,6 @@ int CmdLegicLoad(const char *Cmd) { 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(); @@ -513,6 +571,9 @@ int CmdLegicLoad(const char *Cmd) { return 0; } +// Save, filename, num of bytes, starting offset. (in decimal) +// ie: "hf legic save nnn.txt 100 0 (saves the first 100bytes) +// (ascii hex textfile) int CmdLegicSave(const char *Cmd) { int requested = 1024; int offset = 0; @@ -566,6 +627,8 @@ int CmdLegicSave(const char *Cmd) { } //TODO: write a help text (iceman) +// should say which tagtype +// should load a tag to device mem. 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]); @@ -576,151 +639,126 @@ 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; - UsbCommand c = {CMD_WRITER_LEGIC_RF, {0,0,0}}; - 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; + // check that user entered even number of characters + // for hex data string + if (len & 1) { + errors = true; + break; + } - if ( (IV & 0x7F) != IV ){ - IV &= 0x7F; - PrintAndLog("Truncating IV to 7bits"); + // 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, 10); + 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; } - if ( (IV & 1) == 0 ){ - IV |= 0x01; // IV must be odd - PrintAndLog("LSB of IV must be SET"); + //Validations + if (errors){ + if (data) + free(data); + return usage_legic_write(); } - - PrintAndLog("Current IV: 0x%02x", IV); - - c.arg[0] = offset; - c.arg[1] = len; - c.arg[2] = IV; - - clearCommandBuffer(); - SendCommand(&c); - return 0; -} -int CmdLegicRfRawWrite(const char *Cmd) { + // tagtype + legic_card_select_t card; + if (legic_get_type(&card)) { + PrintAndLog("Failed to identify tagtype"); + return -1; + } - char cmdp = param_getchar(Cmd, 0); - if ( cmdp == 'H' || cmdp == 'h' ) return usage_legic_rawwrite(); + legic_print_type(card.cardsize, 0); - uint32_t address = 0, data = 0, IV = 0; - char answer; - - UsbCommand c = { CMD_RAW_WRITER_LEGIC_RF, {0,0,0} }; - int res = sscanf(Cmd, "%x %x %x", &address, &data, &IV); - if(res < 2) - return usage_legic_rawwrite(); - // OUT-OF-BOUNDS check - if(address > MAX_LENGTH) - return usage_legic_rawwrite(); - - if ( (IV & 0x7F) != IV ){ - IV &= 0x7F; - PrintAndLog("Truncating IV to 7bits"); + // UID 4 bytes can't be written to. + if ( len + offset + 4 >= card.cardsize ) { + PrintAndLog("Out-of-bounds, Cardsize = %d, [offset+len = %d ]", card.cardsize, len + offset + 4); + return -2; } - if ( (IV & 1) == 0 ){ - IV |= 0x01; // IV must be odd - PrintAndLog("LSB of IV must be SET"); - } - PrintAndLog("Current IV: 0x%02x", IV); - c.arg[0] = address; - c.arg[1] = data; - c.arg[2] = IV; + legic_chk_iv(&IV); - if (c.arg[0] == 0x05 || c.arg[0] == 0x06) { - 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); - return 0; - } - return -1; - } + PrintAndLog("Writing to tag"); + UsbCommand c = {CMD_WRITER_LEGIC_RF, {offset, len, IV}}; + memcpy(c.d.asBytes, data, len); clearCommandBuffer(); SendCommand(&c); - return 0; + UsbCommand resp; + 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; } -//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); +/* +int CmdLegicRfRawWrite(const char *Cmd) { + 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')) { + // return 0; + // } + return 0; +} +*/ - for(i = 0; i < 22; i++) { - c.arg[0] = i*48; - - clearCommandBuffer(); - SendCommand(&c); - WaitForResponse(CMD_ACK, NULL); - } - clearCommandBuffer(); - SendCommand(&cmd); - 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; @@ -790,16 +828,13 @@ 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; @@ -808,56 +843,325 @@ int CmdLegicCalcCrc8(const char *Cmd){ if (data) free(data); return 0; } - -int HFLegicInfo(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, 1000)) { - uint8_t isOK = resp.arg[0] & 0xFF; - uint16_t tagtype = resp.arg[1] & 0xFFF; - if ( isOK ) { - PrintAndLog(" UID : %s", sprint_hex(resp.d.asBytes, 4)); - switch(tagtype) { - case 22: PrintAndLog("MIM22 card (22bytes)"); break; - case 256: PrintAndLog("MIM256 card (256bytes)"); break; - case 1024: PrintAndLog("MIM1024 card (1024bytes)"); break; - default: { - PrintAndLog("Unknown card format: %x", tagtype); - return 1; - } - } - } else { - if ( verbose ) PrintAndLog("legic card select failed"); + if (!WaitForResponseTimeout(CMD_ACK, &resp, 500)) + return 2; + + uint8_t isOK = resp.arg[0] & 0xFF; + 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); + PrintAndLog("ICE: offset %d | len %d", i, len); + } +} + +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; + 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){ + return HFLegicReader(Cmd, TRUE); +} + +int CmdLegicDump(const char *Cmd){ + + 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; } - } else { - if ( verbose ) PrintAndLog("command execution time out"); + 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"); + + if ((f = fopen(filename,"wb")) == NULL) { + 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 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 + if ((f = fopen(filename,"rb")) == NULL) { + 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); + return 2; + } + fclose(f); + + // 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 CmdLegicInfo(const char *Cmd){ - return HFLegicInfo(Cmd, TRUE); + +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 + if ((f = fopen(filename,"wb")) == NULL) { + 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; } static command_t CommandTable[] = { - {"help", CmdHelp, 1, "This help"}, - {"decode", CmdLegicDecode, 0, "Display deobfuscated and decoded LEGIC RF tag data (use after hf legic reader)"}, - {"read", 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"}, - {"info", CmdLegicInfo, 1, "Information"}, + {"help", CmdHelp, 1, "This help"}, + {"reader", CmdLegicReader, 1, "LEGIC Prime Reader UID and Type tag info"}, + {"info", CmdLegicInfo, 0, "Display deobfuscated and decoded LEGIC Prime tag data"}, + {"dump", CmdLegicDump, 0, "Dump LEGIC Prime card to binary file"}, + {"rdmem", CmdLegicRdmem, 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)"}, + {"crc", CmdLegicCalcCrc, 1, "Calculate Legic CRC over given hexbytes"}, + {"eload", CmdLegicELoad, 1, "Load binary dump to emulator memory"}, + {"esave", CmdLegicESave, 1, "Save emulator memory to binary file"}, {NULL, NULL, 0, NULL} };