X-Git-Url: https://git.zerfleddert.de/cgi-bin/gitweb.cgi/proxmark3-svn/blobdiff_plain/a4749080d947e31a3af08bf235173e8ed853d7b2..refs/pull/524/head:/client/cmdhficlass.c?ds=inline diff --git a/client/cmdhficlass.c b/client/cmdhficlass.c index 6c92893a..60713a01 100644 --- a/client/cmdhficlass.c +++ b/client/cmdhficlass.c @@ -23,17 +23,35 @@ #include "common.h" #include "util.h" #include "cmdmain.h" -#include "loclass/des.h" +#include "polarssl/des.h" #include "loclass/cipherutils.h" #include "loclass/cipher.h" #include "loclass/ikeys.h" #include "loclass/elite_crack.h" #include "loclass/fileutils.h" +#include "protocols.h" +#include "usb_cmd.h" +#include "cmdhfmfu.h" static int CmdHelp(const char *Cmd); -int xorbits_8(uint8_t val) -{ +#define ICLASS_KEYS_MAX 8 +static uint8_t iClass_Key_Table[ICLASS_KEYS_MAX][8] = { + { 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00 }, + { 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00 }, + { 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00 }, + { 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00 }, + { 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00 }, + { 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00 }, + { 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00 }, + { 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00 } +}; + +typedef struct iclass_block { + uint8_t d[8]; +} iclass_block_t; + +int xorbits_8(uint8_t val) { uint8_t res = val ^ (val >> 1); //1st pass res = res ^ (res >> 1); // 2nd pass res = res ^ (res >> 2); // 3rd pass @@ -41,69 +59,62 @@ int xorbits_8(uint8_t val) return res & 1; } -int CmdHFiClassList(const char *Cmd) -{ +int CmdHFiClassList(const char *Cmd) { PrintAndLog("Deprecated command, use 'hf list iclass' instead"); return 0; } -int CmdHFiClassSnoop(const char *Cmd) -{ +int CmdHFiClassSnoop(const char *Cmd) { UsbCommand c = {CMD_SNOOP_ICLASS}; SendCommand(&c); return 0; } + +int usage_hf_iclass_sim(void) { + PrintAndLog("Usage: hf iclass sim <option> [CSN]"); + PrintAndLog(" options"); + PrintAndLog(" 0 <CSN> simulate the given CSN"); + PrintAndLog(" 1 simulate default CSN"); + PrintAndLog(" 2 Reader-attack, gather reader responses to extract elite key"); + PrintAndLog(" 3 Full simulation using emulator memory (see 'hf iclass eload')"); + PrintAndLog(" example: hf iclass sim 0 031FEC8AF7FF12E0"); + PrintAndLog(" example: hf iclass sim 2"); + PrintAndLog(" example: hf iclass eload 'tagdump.bin'"); + PrintAndLog(" hf iclass sim 3"); + return 0; +} + #define NUM_CSNS 15 -int CmdHFiClassSim(const char *Cmd) -{ +int CmdHFiClassSim(const char *Cmd) { uint8_t simType = 0; uint8_t CSN[8] = {0, 0, 0, 0, 0, 0, 0, 0}; if (strlen(Cmd)<1) { - PrintAndLog("Usage: hf iclass sim [0 <CSN>] | x"); - PrintAndLog(" options"); - PrintAndLog(" 0 <CSN> simulate the given CSN"); - PrintAndLog(" 1 simulate default CSN"); - PrintAndLog(" 2 iterate CSNs, gather MACs"); - PrintAndLog(" sample: hf iclass sim 0 031FEC8AF7FF12E0"); - PrintAndLog(" sample: hf iclass sim 2"); - return 0; + return usage_hf_iclass_sim(); } - - simType = param_get8(Cmd, 0); + simType = param_get8ex(Cmd, 0, 0, 10); if(simType == 0) { if (param_gethex(Cmd, 1, CSN, 16)) { PrintAndLog("A CSN should consist of 16 HEX symbols"); - return 1; + return usage_hf_iclass_sim(); } - PrintAndLog("--simtype:%02x csn:%s", simType, sprint_hex(CSN, 8)); + PrintAndLog("--simtype:%02x csn:%s", simType, sprint_hex(CSN, 8)); } - if(simType > 2) + if(simType > 3) { PrintAndLog("Undefined simptype %d", simType); - return 1; + return usage_hf_iclass_sim(); } - uint8_t numberOfCSNs=0; + uint8_t numberOfCSNs=0; if(simType == 2) { UsbCommand c = {CMD_SIMULATE_TAG_ICLASS, {simType,NUM_CSNS}}; UsbCommand resp = {0}; - /*uint8_t csns[8 * NUM_CSNS] = { - 0x00,0x0B,0x0F,0xFF,0xF7,0xFF,0x12,0xE0 , - 0x00,0x13,0x94,0x7e,0x76,0xff,0x12,0xe0 , - 0x2a,0x99,0xac,0x79,0xec,0xff,0x12,0xe0 , - 0x17,0x12,0x01,0xfd,0xf7,0xff,0x12,0xe0 , - 0xcd,0x56,0x01,0x7c,0x6f,0xff,0x12,0xe0 , - 0x4b,0x5e,0x0b,0x72,0xef,0xff,0x12,0xe0 , - 0x00,0x73,0xd8,0x75,0x58,0xff,0x12,0xe0 , - 0x0c,0x90,0x32,0xf3,0x5d,0xff,0x12,0xe0 }; -*/ - uint8_t csns[8*NUM_CSNS] = { 0x00, 0x0B, 0x0F, 0xFF, 0xF7, 0xFF, 0x12, 0xE0, 0x00, 0x04, 0x0E, 0x08, 0xF7, 0xFF, 0x12, 0xE0, @@ -167,42 +178,61 @@ int CmdHFiClassSim(const char *Cmd) return 0; } -int CmdHFiClassReader(const char *Cmd) -{ - UsbCommand c = {CMD_READER_ICLASS, {0}}; - SendCommand(&c); +int HFiClassReader(const char *Cmd, bool loop, bool verbose) { + bool tagFound = false; + UsbCommand c = {CMD_READER_ICLASS, {FLAG_ICLASS_READER_CSN | + FLAG_ICLASS_READER_CC | FLAG_ICLASS_READER_CONF | FLAG_ICLASS_READER_AA | + FLAG_ICLASS_READER_ONLY_ONCE | FLAG_ICLASS_READER_ONE_TRY } }; + // loop in client not device - else on windows have a communication error UsbCommand resp; while(!ukbhit()){ - if (WaitForResponseTimeout(CMD_ACK,&resp,4500)) { - uint8_t isOK = resp.arg[0] & 0xff; - uint8_t * data = resp.d.asBytes; - - PrintAndLog("isOk:%02x", isOK); - if( isOK == 0){ - //Aborted - PrintAndLog("Quitting..."); + SendCommand(&c); + if (WaitForResponseTimeout(CMD_ACK,&resp, 4500)) { + uint8_t readStatus = resp.arg[0] & 0xff; + uint8_t *data = resp.d.asBytes; + + // no tag found or button pressed + if( (readStatus == 0 && !loop) || readStatus == 0xFF) { + // abort + if (verbose) PrintAndLog("Quitting..."); return 0; } - if(isOK > 0) - { - PrintAndLog("CSN: %s",sprint_hex(data,8)); + + if( readStatus & FLAG_ICLASS_READER_CSN) { + PrintAndLog(" CSN: %s",sprint_hex(data,8)); + tagFound = true; } - if(isOK >= 1) - { - PrintAndLog("CC: %s",sprint_hex(data+8,8)); - }else{ - PrintAndLog("No CC obtained"); + if( readStatus & FLAG_ICLASS_READER_CC) { + PrintAndLog(" CC: %s",sprint_hex(data+16,8)); } + if( readStatus & FLAG_ICLASS_READER_CONF) { + printIclassDumpInfo(data); + } + if (readStatus & FLAG_ICLASS_READER_AA) { + bool legacy = true; + PrintAndLog(" AppIA: %s",sprint_hex(data+8*5,8)); + for (int i = 0; i<8; i++) { + if (data[8*5+i] != 0xFF) { + legacy = false; + } + } + PrintAndLog(" : Possible iClass %s",(legacy) ? "(legacy tag)" : "(NOT legacy tag)"); + } + + if (tagFound && !loop) return 1; } else { - PrintAndLog("Command execute timeout"); + if (verbose) PrintAndLog("Command execute timeout"); } + if (!loop) break; } - return 0; } -int CmdHFiClassReader_Replay(const char *Cmd) -{ +int CmdHFiClassReader(const char *Cmd) { + return HFiClassReader(Cmd, true, true); +} + +int CmdHFiClassReader_Replay(const char *Cmd) { uint8_t readerType = 0; uint8_t MAC[4]={0x00, 0x00, 0x00, 0x00}; @@ -224,179 +254,22 @@ int CmdHFiClassReader_Replay(const char *Cmd) return 0; } -int CmdHFiClassReader_Dump(const char *Cmd) -{ - uint8_t readerType = 0; - uint8_t MAC[4]={0x00,0x00,0x00,0x00}; - uint8_t KEY[8]={0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00}; - uint8_t CSN[8]={0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00}; - uint8_t CCNR[12]={0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00}; - //uint8_t CC_temp[8]={0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00}; - uint8_t div_key[8]={0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00}; - uint8_t keytable[128] = {0}; - int elite = 0; - uint8_t *used_key; - int i; - if (strlen(Cmd)<1) - { - PrintAndLog("Usage: hf iclass dump <Key> [e]"); - PrintAndLog(" Key - A 16 byte master key"); - PrintAndLog(" e - If 'e' is specified, the key is interpreted as the 16 byte"); - PrintAndLog(" Custom Key (KCus), which can be obtained via reader-attack"); - PrintAndLog(" See 'hf iclass sim 2'. This key should be on iclass-format"); - PrintAndLog(" sample: hf iclass dump 0011223344556677"); - - - return 0; - } - - if (param_gethex(Cmd, 0, KEY, 16)) - { - PrintAndLog("KEY must include 16 HEX symbols"); - return 1; - } - - if (param_getchar(Cmd, 1) == 'e') - { - PrintAndLog("Elite switch on"); - elite = 1; - - //calc h2 - hash2(KEY, keytable); - printarr_human_readable("keytable", keytable, 128); - - } - - UsbCommand resp; - uint8_t key_sel[8] = {0}; - uint8_t key_sel_p[8] = { 0 }; - - UsbCommand c = {CMD_READER_ICLASS, {0}}; - c.arg[0] = FLAG_ICLASS_READER_ONLY_ONCE| FLAG_ICLASS_READER_GET_CC; +int iclassEmlSetMem(uint8_t *data, int blockNum, int blocksCount) { + UsbCommand c = {CMD_MIFARE_EML_MEMSET, {blockNum, blocksCount, 0}}; + memcpy(c.d.asBytes, data, blocksCount * 16); SendCommand(&c); - - - - if (!WaitForResponseTimeout(CMD_ACK,&resp,4500)) - { - PrintAndLog("Command execute timeout"); - return 0; - } - - uint8_t isOK = resp.arg[0] & 0xff; - uint8_t * data = resp.d.asBytes; - - memcpy(CSN,data,8); - memcpy(CCNR,data+8,8); - - PrintAndLog("isOk:%02x", isOK); - - if(isOK > 0) - { - PrintAndLog("CSN: %s",sprint_hex(CSN,8)); - } - if(isOK <= 1){ - PrintAndLog("Failed to obtain CC! Aborting"); - return 0; - } - //Status 2 or higher - - if(elite) - { - //Get the key index (hash1) - uint8_t key_index[8] = {0}; - - hash1(CSN, key_index); - printvar("hash1", key_index,8); - for(i = 0; i < 8 ; i++) - key_sel[i] = keytable[key_index[i]] & 0xFF; - PrintAndLog("Pre-fortified 'permuted' HS key that would be needed by an iclass reader to talk to above CSN:"); - printvar("k_sel", key_sel,8); - //Permute from iclass format to standard format - permutekey_rev(key_sel,key_sel_p); - used_key = key_sel_p; - }else{ - used_key = KEY; - } - - PrintAndLog("Pre-fortified key that would be needed by the OmniKey reader to talk to above CSN:"); - printvar("Used key",used_key,8); - diversifyKey(CSN,used_key, div_key); - PrintAndLog("Hash0, a.k.a diversified key, that is computed using Ksel and stored in the card (Block 3):"); - printvar("Div key", div_key, 8); - printvar("CC_NR:",CCNR,12); - doMAC(CCNR,12,div_key, MAC); - printvar("MAC", MAC, 4); - - uint8_t iclass_data[32000] = {0}; - uint32_t iclass_datalen = 0; - uint32_t iclass_blocksFailed = 0;//Set to 1 if dump was incomplete - - UsbCommand d = {CMD_READER_ICLASS_REPLAY, {readerType}}; - memcpy(d.d.asBytes, MAC, 4); - clearCommandBuffer(); - SendCommand(&d); - PrintAndLog("Waiting for device to dump data. Press button on device and key on keyboard to abort..."); - while (true) { - printf("."); - if (ukbhit()) { - getchar(); - printf("\naborted via keyboard!\n"); - break; - } - if(WaitForResponseTimeout(CMD_ACK,&resp,4500)) - { - uint32_t dataLength = resp.arg[0]; - iclass_blocksFailed |= resp.arg[1]; - if(dataLength > 0) - { - PrintAndLog("Got %d bytes data (total so far %d)" ,dataLength,iclass_datalen); - memcpy(iclass_data, resp.d.asBytes,dataLength); - iclass_datalen += dataLength; - }else - {//Last transfer, datalength 0 means the dump is finished - PrintAndLog("Dumped %d bytes of data from tag. ", iclass_datalen); - if(iclass_blocksFailed) - { - PrintAndLog("OBS! Some blocks failed to be dumped correctly!"); - } - if(iclass_datalen > 0) - { - char filename[100] = {0}; - //create a preferred filename - snprintf(filename, 100,"iclass_tagdump-%02x%02x%02x%02x%02x%02x%02x%02x", - CSN[0],CSN[1],CSN[2],CSN[3], - CSN[4],CSN[5],CSN[6],CSN[7]); - saveFile(filename,"bin",iclass_data, iclass_datalen ); - } - //Aaaand we're finished - return 0; - } - } - } - - return 0; } -int hf_iclass_eload_usage() -{ +int hf_iclass_eload_usage(void) { PrintAndLog("Loads iclass tag-dump into emulator memory on device"); PrintAndLog("Usage: hf iclass eload f <filename>"); PrintAndLog(""); PrintAndLog("Example: hf iclass eload f iclass_tagdump-aa162d30f8ff12f1.bin"); return 0; - } -int iclassEmlSetMem(uint8_t *data, int blockNum, int blocksCount) { - UsbCommand c = {CMD_MIFARE_EML_MEMSET, {blockNum, blocksCount, 0}}; - memcpy(c.d.asBytes, data, blocksCount * 16); - SendCommand(&c); - return 0; -} -int CmdHFiClassELoad(const char *Cmd) -{ +int CmdHFiClassELoad(const char *Cmd) { char opt = param_getchar(Cmd, 0); if (strlen(Cmd)<1 || opt == 'h') @@ -405,7 +278,7 @@ int CmdHFiClassELoad(const char *Cmd) //File handling and reading FILE *f; char filename[FILE_PATH_SIZE]; - if(opt == 'f' && param_getstr(Cmd, 1, filename) > 0) + if(opt == 'f' && param_getstr(Cmd, 1, filename, sizeof(filename)) > 0) { f = fopen(filename, "rb"); }else{ @@ -421,10 +294,18 @@ int CmdHFiClassELoad(const char *Cmd) long fsize = ftell(f); fseek(f, 0, SEEK_SET); + if (fsize < 0) { + PrintAndLog("Error, when getting filesize"); + fclose(f); + return 1; + } + uint8_t *dump = malloc(fsize); + size_t bytes_read = fread(dump, 1, fsize, f); fclose(f); + printIclassDumpInfo(dump); //Validate if (bytes_read < fsize) @@ -450,115 +331,937 @@ int CmdHFiClassELoad(const char *Cmd) return 0; } +static int readKeyfile(const char *filename, size_t len, uint8_t* buffer) { + FILE *f = fopen(filename, "rb"); + if(!f) { + PrintAndLog("Failed to read from file '%s'", filename); + return 1; + } + fseek(f, 0, SEEK_END); + long fsize = ftell(f); + fseek(f, 0, SEEK_SET); + size_t bytes_read = fread(buffer, 1, len, f); + fclose(f); + if(fsize != len) + { + PrintAndLog("Warning, file size is %d, expected %d", fsize, len); + return 1; + } + if(bytes_read != len) + { + PrintAndLog("Warning, could only read %d bytes, expected %d" ,bytes_read, len); + return 1; + } + return 0; +} -int CmdHFiClass_iso14443A_write(const char *Cmd) -{ - uint8_t readerType = 0; - uint8_t MAC[4]={0x00,0x00,0x00,0x00}; - uint8_t KEY[8]={0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00}; - uint8_t CSN[8]={0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00}; - uint8_t CCNR[12]={0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00}; - uint8_t div_key[8]={0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00}; - - uint8_t blockNo=0; - uint8_t bldata[8]={0}; +int usage_hf_iclass_decrypt(void) { + PrintAndLog("Usage: hf iclass decrypt f <tagdump>"); + PrintAndLog(""); + PrintAndLog("OBS! In order to use this function, the file 'iclass_decryptionkey.bin' must reside"); + PrintAndLog("in the working directory. The file should be 16 bytes binary data"); + PrintAndLog(""); + PrintAndLog("example: hf iclass decrypt f tagdump_12312342343.bin"); + PrintAndLog(""); + PrintAndLog("OBS! This is pretty stupid implementation, it tries to decrypt every block after block 6. "); + PrintAndLog("Correct behaviour would be to decrypt only the application areas where the key is valid,"); + PrintAndLog("which is defined by the configuration block."); + return 1; +} - if (strlen(Cmd)<3) +int CmdHFiClassDecrypt(const char *Cmd) { + uint8_t key[16] = { 0 }; + if(readKeyfile("iclass_decryptionkey.bin", 16, key)) { - PrintAndLog("Usage: hf iclass write <Key> <Block> <Data>"); - PrintAndLog(" sample: hf iclass write 0011223344556677 10 AAAAAAAAAAAAAAAA"); - return 0; + usage_hf_iclass_decrypt(); + return 1; + } + PrintAndLog("Decryption file found... "); + char opt = param_getchar(Cmd, 0); + if (strlen(Cmd)<1 || opt == 'h') + return usage_hf_iclass_decrypt(); + + //Open the tagdump-file + FILE *f; + char filename[FILE_PATH_SIZE]; + if(opt == 'f' && param_getstr(Cmd, 1, filename, sizeof(filename)) > 0) { + f = fopen(filename, "rb"); + if ( f == NULL ) { + PrintAndLog("Could not find file %s", filename); + return 1; + } + } else { + return usage_hf_iclass_decrypt(); } - if (param_gethex(Cmd, 0, KEY, 16)) + fseek(f, 0, SEEK_END); + long fsize = ftell(f); + fseek(f, 0, SEEK_SET); + uint8_t enc_dump[8] = {0}; + uint8_t *decrypted = malloc(fsize); + des3_context ctx = { DES_DECRYPT ,{ 0 } }; + des3_set2key_dec( &ctx, key); + size_t bytes_read = fread(enc_dump, 1, 8, f); + + //Use the first block (CSN) for filename + char outfilename[FILE_PATH_SIZE] = { 0 }; + snprintf(outfilename,FILE_PATH_SIZE,"iclass_tagdump-%02x%02x%02x%02x%02x%02x%02x%02x-decrypted", + enc_dump[0],enc_dump[1],enc_dump[2],enc_dump[3], + enc_dump[4],enc_dump[5],enc_dump[6],enc_dump[7]); + + size_t blocknum =0; + while(bytes_read == 8) { - PrintAndLog("KEY must include 16 HEX symbols"); - return 1; + if(blocknum < 7) + { + memcpy(decrypted+(blocknum*8), enc_dump, 8); + }else{ + des3_crypt_ecb(&ctx, enc_dump,decrypted +(blocknum*8) ); + } + printvar("decrypted block", decrypted +(blocknum*8), 8); + bytes_read = fread(enc_dump, 1, 8, f); + blocknum++; } + fclose(f); + + saveFile(outfilename,"bin", decrypted, blocknum*8); + free(decrypted); + return 0; +} - blockNo = param_get8(Cmd, 1); - if (blockNo>32) +int usage_hf_iclass_encrypt(void) { + PrintAndLog("Usage: hf iclass encrypt <BlockData>"); + PrintAndLog(""); + PrintAndLog("OBS! In order to use this function, the file 'iclass_decryptionkey.bin' must reside"); + PrintAndLog("in the working directory. The file should be 16 bytes binary data"); + PrintAndLog(""); + PrintAndLog("example: hf iclass encrypt 0102030405060708"); + PrintAndLog(""); + return 0; +} + +static int iClassEncryptBlkData(uint8_t *blkData) { + uint8_t key[16] = { 0 }; + if(readKeyfile("iclass_decryptionkey.bin", 16, key)) { - PrintAndLog("Error: Maximum number of blocks is 32 for iClass 2K Cards!"); + usage_hf_iclass_encrypt(); return 1; } - if (param_gethex(Cmd, 2, bldata, 8)) + PrintAndLog("Decryption file found... "); + + uint8_t encryptedData[16]; + uint8_t *encrypted = encryptedData; + des3_context ctx = { DES_DECRYPT ,{ 0 } }; + des3_set2key_enc( &ctx, key); + + des3_crypt_ecb(&ctx, blkData,encrypted); + //printvar("decrypted block", decrypted, 8); + memcpy(blkData,encrypted,8); + + return 1; +} + +int CmdHFiClassEncryptBlk(const char *Cmd) { + uint8_t blkData[8] = {0}; + char opt = param_getchar(Cmd, 0); + if (strlen(Cmd)<1 || opt == 'h') + return usage_hf_iclass_encrypt(); + + //get the bytes to encrypt + if (param_gethex(Cmd, 0, blkData, 16)) { - PrintAndLog("Block data must include 8 HEX symbols"); - return 1; + PrintAndLog("BlockData must include 16 HEX symbols"); + return 0; } + if (!iClassEncryptBlkData(blkData)) return 0; - UsbCommand c = {CMD_ICLASS_ISO14443A_WRITE, {0}}; - SendCommand(&c); + printvar("encrypted block", blkData, 8); + return 1; +} + +void Calc_wb_mac(uint8_t blockno, uint8_t *data, uint8_t *div_key, uint8_t MAC[4]) { + uint8_t WB[9]; + WB[0] = blockno; + memcpy(WB + 1,data,8); + doMAC_N(WB,sizeof(WB),div_key,MAC); + //printf("Cal wb mac block [%02x][%02x%02x%02x%02x%02x%02x%02x%02x] : MAC [%02x%02x%02x%02x]",WB[0],WB[1],WB[2],WB[3],WB[4],WB[5],WB[6],WB[7],WB[8],MAC[0],MAC[1],MAC[2],MAC[3]); +} + +static bool select_only(uint8_t *CSN, uint8_t *CCNR, bool use_credit_key, bool verbose) { UsbCommand resp; - if (WaitForResponseTimeout(CMD_ACK,&resp,4500)) { - uint8_t isOK = resp.arg[0] & 0xff; - uint8_t * data = resp.d.asBytes; + UsbCommand c = {CMD_READER_ICLASS, {0}}; + c.arg[0] = FLAG_ICLASS_READER_ONLY_ONCE | FLAG_ICLASS_READER_CC | FLAG_ICLASS_READER_ONE_TRY; + if (use_credit_key) + c.arg[0] |= FLAG_ICLASS_READER_CEDITKEY; - memcpy(CSN,data,8); - memcpy(CCNR,data+8,8); - PrintAndLog("DEBUG: %s",sprint_hex(CSN,8)); - PrintAndLog("DEBUG: %s",sprint_hex(CCNR,8)); - PrintAndLog("isOk:%02x", isOK); - } else { + clearCommandBuffer(); + SendCommand(&c); + if (!WaitForResponseTimeout(CMD_ACK,&resp,4500)) + { PrintAndLog("Command execute timeout"); + return false; } - diversifyKey(CSN,KEY, div_key); + uint8_t isOK = resp.arg[0] & 0xff; + uint8_t *data = resp.d.asBytes; + + memcpy(CSN,data,8); + if (CCNR!=NULL)memcpy(CCNR,data+16,8); + if(isOK > 0) + { + if (verbose) PrintAndLog("CSN: %s",sprint_hex(CSN,8)); + } + if(isOK <= 1){ + PrintAndLog("Failed to obtain CC! Aborting"); + return false; + } + return true; +} - PrintAndLog("Div Key: %s",sprint_hex(div_key,8)); - doMAC(CCNR, 12,div_key, MAC); +static bool select_and_auth(uint8_t *KEY, uint8_t *MAC, uint8_t *div_key, bool use_credit_key, bool elite, bool rawkey, bool verbose) { + uint8_t CSN[8]={0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00}; + uint8_t CCNR[12]={0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00}; - UsbCommand c2 = {CMD_ICLASS_ISO14443A_WRITE, {readerType,blockNo}}; - memcpy(c2.d.asBytes, bldata, 8); - memcpy(c2.d.asBytes+8, MAC, 4); - SendCommand(&c2); + if (!select_only(CSN, CCNR, use_credit_key, verbose)) + return false; - if (WaitForResponseTimeout(CMD_ACK,&resp,1500)) { - uint8_t isOK = resp.arg[0] & 0xff; - uint8_t * data = resp.d.asBytes; + //get div_key + if(rawkey) + memcpy(div_key, KEY, 8); + else + HFiClassCalcDivKey(CSN, KEY, div_key, elite); + PrintAndLog("Authing with %s: %02x%02x%02x%02x%02x%02x%02x%02x", rawkey ? "raw key" : "diversified key", div_key[0],div_key[1],div_key[2],div_key[3],div_key[4],div_key[5],div_key[6],div_key[7]); - if (isOK) - PrintAndLog("isOk:%02x data:%s", isOK, sprint_hex(data, 4)); - else - PrintAndLog("isOk:%02x", isOK); - } else { - PrintAndLog("Command execute timeout"); + doMAC(CCNR, div_key, MAC); + UsbCommand resp; + UsbCommand d = {CMD_ICLASS_AUTHENTICATION, {0}}; + memcpy(d.d.asBytes, MAC, 4); + clearCommandBuffer(); + SendCommand(&d); + if (!WaitForResponseTimeout(CMD_ACK,&resp,4500)) + { + PrintAndLog("Auth Command execute timeout"); + return false; + } + uint8_t isOK = resp.arg[0] & 0xff; + if (!isOK) { + PrintAndLog("Authentication error"); + return false; } + return true; +} + +int usage_hf_iclass_dump(void) { + PrintAndLog("Usage: hf iclass dump f <fileName> k <Key> c <CreditKey> e|r\n"); + PrintAndLog("Options:"); + PrintAndLog(" f <filename> : specify a filename to save dump to"); + PrintAndLog(" k <Key> : *Access Key as 16 hex symbols or 1 hex to select key from memory"); + PrintAndLog(" c <CreditKey>: Credit Key as 16 hex symbols or 1 hex to select key from memory"); + PrintAndLog(" e : If 'e' is specified, the key is interpreted as the 16 byte"); + PrintAndLog(" Custom Key (KCus), which can be obtained via reader-attack"); + PrintAndLog(" See 'hf iclass sim 2'. This key should be on iclass-format"); + PrintAndLog(" r : If 'r' is specified, the key is interpreted as raw block 3/4"); + PrintAndLog(" NOTE: * = required"); + PrintAndLog("Samples:"); + PrintAndLog(" hf iclass dump k 001122334455667B"); + PrintAndLog(" hf iclass dump k AAAAAAAAAAAAAAAA c 001122334455667B"); + PrintAndLog(" hf iclass dump k AAAAAAAAAAAAAAAA e"); return 0; } -int CmdHFiClass_loclass(const char *Cmd) -{ - char opt = param_getchar(Cmd, 0); - if (strlen(Cmd)<1 || opt == 'h') { - PrintAndLog("Usage: hf iclass loclass [options]"); - PrintAndLog("Options:"); - PrintAndLog("h Show this help"); - PrintAndLog("t Perform self-test"); - PrintAndLog("f <filename> Bruteforce iclass dumpfile"); - PrintAndLog(" An iclass dumpfile is assumed to consist of an arbitrary number of"); - PrintAndLog(" malicious CSNs, and their protocol responses"); - PrintAndLog(" The the binary format of the file is expected to be as follows: "); - PrintAndLog(" <8 byte CSN><8 byte CC><4 byte NR><4 byte MAC>"); - PrintAndLog(" <8 byte CSN><8 byte CC><4 byte NR><4 byte MAC>"); - PrintAndLog(" <8 byte CSN><8 byte CC><4 byte NR><4 byte MAC>"); - PrintAndLog(" ... totalling N*24 bytes"); - return 0; - } - char fileName[255] = {0}; - if(opt == 'f') +int CmdHFiClassReader_Dump(const char *Cmd) { + + uint8_t MAC[4] = {0x00,0x00,0x00,0x00}; + uint8_t div_key[8] = {0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00}; + uint8_t c_div_key[8] = {0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00}; + uint8_t blockno = 0; + uint8_t numblks = 0; + uint8_t maxBlk = 31; + uint8_t app_areas = 1; + uint8_t kb = 2; + uint8_t KEY[8] = {0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00}; + uint8_t CreditKEY[8] = {0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00}; + uint8_t keyNbr = 0; + uint8_t dataLen = 0; + uint8_t fileNameLen = 0; + char filename[FILE_PATH_SIZE]={0}; + char tempStr[50] = {0}; + bool have_debit_key = false; + bool have_credit_key = false; + bool use_credit_key = false; + bool elite = false; + bool rawkey = false; + bool errors = false; + uint8_t cmdp = 0; + + while(param_getchar(Cmd, cmdp) != 0x00) { - if(param_getstr(Cmd, 1, fileName) > 0) + switch(param_getchar(Cmd, cmdp)) { - return bruteforceFileNoKeys(fileName); - }else - { - PrintAndLog("You must specify a filename"); + case 'h': + case 'H': + return usage_hf_iclass_dump(); + case 'c': + case 'C': + have_credit_key = true; + dataLen = param_getstr(Cmd, cmdp+1, tempStr, sizeof(tempStr)); + if (dataLen == 16) { + errors = param_gethex(tempStr, 0, CreditKEY, dataLen); + } else if (dataLen == 1) { + keyNbr = param_get8(Cmd, cmdp+1); + if (keyNbr < ICLASS_KEYS_MAX) { + memcpy(CreditKEY, iClass_Key_Table[keyNbr], 8); + } else { + PrintAndLog("\nERROR: Credit KeyNbr is invalid\n"); + errors = true; + } + } else { + PrintAndLog("\nERROR: Credit Key is incorrect length\n"); + errors = true; + } + cmdp += 2; + break; + case 'e': + case 'E': + elite = true; + cmdp++; + break; + case 'f': + case 'F': + fileNameLen = param_getstr(Cmd, cmdp+1, filename, sizeof(filename)); + if (fileNameLen < 1) { + PrintAndLog("No filename found after f"); + errors = true; + } + cmdp += 2; + break; + case 'k': + case 'K': + have_debit_key = true; + dataLen = param_getstr(Cmd, cmdp+1, tempStr, sizeof(tempStr)); + if (dataLen == 16) { + errors = param_gethex(tempStr, 0, KEY, dataLen); + } else if (dataLen == 1) { + keyNbr = param_get8(Cmd, cmdp+1); + if (keyNbr < ICLASS_KEYS_MAX) { + memcpy(KEY, iClass_Key_Table[keyNbr], 8); + } else { + PrintAndLog("\nERROR: Credit KeyNbr is invalid\n"); + errors = true; + } + } else { + PrintAndLog("\nERROR: Credit Key is incorrect length\n"); + errors = true; + } + cmdp += 2; + break; + case 'r': + case 'R': + rawkey = true; + cmdp++; + break; + default: + PrintAndLog("Unknown parameter '%c'\n", param_getchar(Cmd, cmdp)); + errors = true; + break; } + if(errors) return usage_hf_iclass_dump(); } - else if(opt == 't') + + if (cmdp < 2) return usage_hf_iclass_dump(); + // if no debit key given try credit key on AA1 (not for iclass but for some picopass this will work) + if (!have_debit_key && have_credit_key) use_credit_key = true; + + //get config and first 3 blocks + UsbCommand c = {CMD_READER_ICLASS, {FLAG_ICLASS_READER_CSN | + FLAG_ICLASS_READER_CONF | FLAG_ICLASS_READER_ONLY_ONCE | FLAG_ICLASS_READER_ONE_TRY}}; + UsbCommand resp; + uint8_t tag_data[255*8]; + + clearCommandBuffer(); + SendCommand(&c); + if (!WaitForResponseTimeout(CMD_ACK, &resp, 4500)) { + PrintAndLog("Command execute timeout"); + DropField(); + return 0; + } + uint8_t readStatus = resp.arg[0] & 0xff; + uint8_t *data = resp.d.asBytes; + + if(readStatus == 0){ + PrintAndLog("No tag found..."); + DropField(); + return 0; + } + if( readStatus & (FLAG_ICLASS_READER_CSN|FLAG_ICLASS_READER_CONF|FLAG_ICLASS_READER_CC)){ + memcpy(tag_data, data, 8*3); + blockno+=2; // 2 to force re-read of block 2 later. (seems to respond differently..) + numblks = data[8]; + getMemConfig(data[13], data[12], &maxBlk, &app_areas, &kb); + // large memory - not able to dump pages currently + if (numblks > maxBlk) numblks = maxBlk; + } + DropField(); + // authenticate debit key and get div_key - later store in dump block 3 + if (!select_and_auth(KEY, MAC, div_key, use_credit_key, elite, rawkey, false)){ + //try twice - for some reason it sometimes fails the first time... + if (!select_and_auth(KEY, MAC, div_key, use_credit_key, elite, rawkey, false)){ + DropField(); + return 0; + } + } + + // begin dump + UsbCommand w = {CMD_ICLASS_DUMP, {blockno, numblks-blockno+1}}; + clearCommandBuffer(); + SendCommand(&w); + if (!WaitForResponseTimeout(CMD_ACK, &resp, 4500)) { + PrintAndLog("Command execute time-out 1"); + DropField(); + return 1; + } + uint32_t blocksRead = resp.arg[1]; + uint8_t isOK = resp.arg[0] & 0xff; + if (!isOK && !blocksRead) { + PrintAndLog("Read Block Failed"); + DropField(); + return 0; + } + uint32_t startindex = resp.arg[2]; + if (blocksRead*8 > sizeof(tag_data)-(blockno*8)) { + PrintAndLog("Data exceeded Buffer size!"); + blocksRead = (sizeof(tag_data)/8) - blockno; + } + // response ok - now get bigbuf content of the dump + GetFromBigBuf(tag_data+(blockno*8), blocksRead*8, startindex); + WaitForResponse(CMD_ACK,NULL); + size_t gotBytes = blocksRead*8 + blockno*8; + + // try AA2 + if (have_credit_key) { + //turn off hf field before authenticating with different key + DropField(); + memset(MAC,0,4); + // AA2 authenticate credit key and git c_div_key - later store in dump block 4 + if (!select_and_auth(CreditKEY, MAC, c_div_key, true, false, false, false)){ + //try twice - for some reason it sometimes fails the first time... + if (!select_and_auth(CreditKEY, MAC, c_div_key, true, false, false, false)){ + DropField(); + return 0; + } + } + // do we still need to read more block? (aa2 enabled?) + if (maxBlk > blockno+numblks+1) { + // setup dump and start + w.arg[0] = blockno + blocksRead; + w.arg[1] = maxBlk - (blockno + blocksRead); + clearCommandBuffer(); + SendCommand(&w); + if (!WaitForResponseTimeout(CMD_ACK, &resp, 4500)) { + PrintAndLog("Command execute timeout 2"); + DropField(); + return 0; + } + uint8_t isOK = resp.arg[0] & 0xff; + blocksRead = resp.arg[1]; + if (!isOK && !blocksRead) { + PrintAndLog("Read Block Failed 2"); + DropField(); + return 0; + } + + startindex = resp.arg[2]; + if (blocksRead*8 > sizeof(tag_data)-gotBytes) { + PrintAndLog("Data exceeded Buffer size!"); + blocksRead = (sizeof(tag_data) - gotBytes)/8; + } + // get dumped data from bigbuf + GetFromBigBuf(tag_data+gotBytes, blocksRead*8, startindex); + WaitForResponse(CMD_ACK,NULL); + + gotBytes += blocksRead*8; + } else { //field is still on - turn it off... + DropField(); + } + } + + // add diversified keys to dump + if (have_debit_key) memcpy(tag_data+(3*8),div_key,8); + if (have_credit_key) memcpy(tag_data+(4*8),c_div_key,8); + // print the dump + printf("------+--+-------------------------+\n"); + printf("CSN |00| %s|\n",sprint_hex(tag_data, 8)); + printIclassDumpContents(tag_data, 1, (gotBytes/8), gotBytes); + + if (filename[0] == 0){ + snprintf(filename, FILE_PATH_SIZE,"iclass_tagdump-%02x%02x%02x%02x%02x%02x%02x%02x", + tag_data[0],tag_data[1],tag_data[2],tag_data[3], + tag_data[4],tag_data[5],tag_data[6],tag_data[7]); + } + + // save the dump to .bin file + PrintAndLog("Saving dump file - %d blocks read", gotBytes/8); + saveFile(filename, "bin", tag_data, gotBytes); + return 1; +} + +static int WriteBlock(uint8_t blockno, uint8_t *bldata, uint8_t *KEY, bool use_credit_key, bool elite, bool rawkey, bool verbose) { + uint8_t MAC[4]={0x00,0x00,0x00,0x00}; + uint8_t div_key[8]={0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00}; + if (!select_and_auth(KEY, MAC, div_key, use_credit_key, elite, rawkey, verbose)) + return 0; + + UsbCommand resp; + + Calc_wb_mac(blockno,bldata,div_key,MAC); + UsbCommand w = {CMD_ICLASS_WRITEBLOCK, {blockno}}; + memcpy(w.d.asBytes, bldata, 8); + memcpy(w.d.asBytes + 8, MAC, 4); + + clearCommandBuffer(); + SendCommand(&w); + if (!WaitForResponseTimeout(CMD_ACK,&resp,4500)) + { + PrintAndLog("Write Command execute timeout"); + return 0; + } + uint8_t isOK = resp.arg[0] & 0xff; + if (!isOK) { + PrintAndLog("Write Block Failed"); + return 0; + } + PrintAndLog("Write Block Successful"); + return 1; +} + +int usage_hf_iclass_writeblock(void) { + PrintAndLog("Options:"); + PrintAndLog(" b <Block> : The block number as 2 hex symbols"); + PrintAndLog(" d <data> : Set the Data to write as 16 hex symbols"); + PrintAndLog(" k <Key> : Access Key as 16 hex symbols or 1 hex to select key from memory"); + PrintAndLog(" c : If 'c' is specified, the key set is assumed to be the credit key\n"); + PrintAndLog(" e : If 'e' is specified, elite computations applied to key"); + PrintAndLog(" r : If 'r' is specified, no computations applied to key"); + PrintAndLog("Samples:"); + PrintAndLog(" hf iclass writeblk b 0A d AAAAAAAAAAAAAAAA k 001122334455667B"); + PrintAndLog(" hf iclass writeblk b 1B d AAAAAAAAAAAAAAAA k 001122334455667B c"); + PrintAndLog(" hf iclass writeblk b 0A d AAAAAAAAAAAAAAAA n 0"); + return 0; +} + +int CmdHFiClass_WriteBlock(const char *Cmd) { + uint8_t blockno=0; + uint8_t bldata[8]={0,0,0,0,0,0,0,0}; + uint8_t KEY[8]={0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00}; + uint8_t keyNbr = 0; + uint8_t dataLen = 0; + char tempStr[50] = {0}; + bool use_credit_key = false; + bool elite = false; + bool rawkey= false; + bool errors = false; + uint8_t cmdp = 0; + while(param_getchar(Cmd, cmdp) != 0x00) + { + switch(param_getchar(Cmd, cmdp)) + { + case 'h': + case 'H': + return usage_hf_iclass_writeblock(); + case 'b': + case 'B': + if (param_gethex(Cmd, cmdp+1, &blockno, 2)) { + PrintAndLog("Block No must include 2 HEX symbols\n"); + errors = true; + } + cmdp += 2; + break; + case 'c': + case 'C': + use_credit_key = true; + cmdp++; + break; + case 'd': + case 'D': + if (param_gethex(Cmd, cmdp+1, bldata, 16)) + { + PrintAndLog("KEY must include 16 HEX symbols\n"); + errors = true; + } + cmdp += 2; + break; + case 'e': + case 'E': + elite = true; + cmdp++; + break; + case 'k': + case 'K': + dataLen = param_getstr(Cmd, cmdp+1, tempStr, sizeof(tempStr)); + if (dataLen == 16) { + errors = param_gethex(tempStr, 0, KEY, dataLen); + } else if (dataLen == 1) { + keyNbr = param_get8(Cmd, cmdp+1); + if (keyNbr < ICLASS_KEYS_MAX) { + memcpy(KEY, iClass_Key_Table[keyNbr], 8); + } else { + PrintAndLog("\nERROR: Credit KeyNbr is invalid\n"); + errors = true; + } + } else { + PrintAndLog("\nERROR: Credit Key is incorrect length\n"); + errors = true; + } + cmdp += 2; + break; + case 'r': + case 'R': + rawkey = true; + cmdp++; + break; + default: + PrintAndLog("Unknown parameter '%c'\n", param_getchar(Cmd, cmdp)); + errors = true; + break; + } + if(errors) return usage_hf_iclass_writeblock(); + } + + if (cmdp < 6) return usage_hf_iclass_writeblock(); + int ans = WriteBlock(blockno, bldata, KEY, use_credit_key, elite, rawkey, true); + DropField(); + return ans; +} + +int usage_hf_iclass_clone(void) { + PrintAndLog("Usage: hf iclass clone f <tagfile.bin> b <first block> l <last block> k <KEY> c e|r"); + PrintAndLog("Options:"); + PrintAndLog(" f <filename>: specify a filename to clone from"); + PrintAndLog(" b <Block> : The first block to clone as 2 hex symbols"); + PrintAndLog(" l <Last Blk>: Set the Data to write as 16 hex symbols"); + PrintAndLog(" k <Key> : Access Key as 16 hex symbols or 1 hex to select key from memory"); + PrintAndLog(" c : If 'c' is specified, the key set is assumed to be the credit key\n"); + PrintAndLog(" e : If 'e' is specified, elite computations applied to key"); + PrintAndLog(" r : If 'r' is specified, no computations applied to key"); + PrintAndLog("Samples:"); + PrintAndLog(" hf iclass clone f iclass_tagdump-121345.bin b 06 l 1A k 1122334455667788 e"); + PrintAndLog(" hf iclass clone f iclass_tagdump-121345.bin b 05 l 19 k 0"); + PrintAndLog(" hf iclass clone f iclass_tagdump-121345.bin b 06 l 19 k 0 e"); + return -1; +} + +int CmdHFiClassCloneTag(const char *Cmd) { + char filename[FILE_PATH_SIZE] = {0}; + char tempStr[50]={0}; + uint8_t KEY[8]={0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00}; + uint8_t keyNbr = 0; + uint8_t fileNameLen = 0; + uint8_t startblock = 0; + uint8_t endblock = 0; + uint8_t dataLen = 0; + bool use_credit_key = false; + bool elite = false; + bool rawkey = false; + bool errors = false; + uint8_t cmdp = 0; + while(param_getchar(Cmd, cmdp) != 0x00) + { + switch(param_getchar(Cmd, cmdp)) + { + case 'h': + case 'H': + return usage_hf_iclass_clone(); + case 'b': + case 'B': + if (param_gethex(Cmd, cmdp+1, &startblock, 2)) { + PrintAndLog("Start Block No must include 2 HEX symbols\n"); + errors = true; + } + cmdp += 2; + break; + case 'c': + case 'C': + use_credit_key = true; + cmdp++; + break; + case 'e': + case 'E': + elite = true; + cmdp++; + break; + case 'f': + case 'F': + fileNameLen = param_getstr(Cmd, cmdp+1, filename, sizeof(filename)); + if (fileNameLen < 1) { + PrintAndLog("No filename found after f"); + errors = true; + } + cmdp += 2; + break; + case 'k': + case 'K': + dataLen = param_getstr(Cmd, cmdp+1, tempStr, sizeof(tempStr)); + if (dataLen == 16) { + errors = param_gethex(tempStr, 0, KEY, dataLen); + } else if (dataLen == 1) { + keyNbr = param_get8(Cmd, cmdp+1); + if (keyNbr < ICLASS_KEYS_MAX) { + memcpy(KEY, iClass_Key_Table[keyNbr], 8); + } else { + PrintAndLog("\nERROR: Credit KeyNbr is invalid\n"); + errors = true; + } + } else { + PrintAndLog("\nERROR: Credit Key is incorrect length\n"); + errors = true; + } + cmdp += 2; + break; + case 'l': + case 'L': + if (param_gethex(Cmd, cmdp+1, &endblock, 2)) { + PrintAndLog("Start Block No must include 2 HEX symbols\n"); + errors = true; + } + cmdp += 2; + break; + case 'r': + case 'R': + rawkey = true; + cmdp++; + break; + default: + PrintAndLog("Unknown parameter '%c'\n", param_getchar(Cmd, cmdp)); + errors = true; + break; + } + if(errors) return usage_hf_iclass_clone(); + } + + if (cmdp < 8) return usage_hf_iclass_clone(); + + FILE *f; + + iclass_block_t tag_data[USB_CMD_DATA_SIZE/12]; + + if ((endblock-startblock+1)*12 > USB_CMD_DATA_SIZE) { + PrintAndLog("Trying to write too many blocks at once. Max: %d", USB_CMD_DATA_SIZE/8); + } + // file handling and reading + f = fopen(filename,"rb"); + if(!f) { + PrintAndLog("Failed to read from file '%s'", filename); + return 1; + } + + if (startblock<5) { + PrintAndLog("You cannot write key blocks this way. yet... make your start block > 4"); + fclose(f); + return 0; + } + // now read data from the file from block 6 --- 19 + // ok we will use this struct [data 8 bytes][MAC 4 bytes] for each block calculate all mac number for each data + // then copy to usbcommand->asbytes; the max is 32 - 6 = 24 block 12 bytes each block 288 bytes then we can only accept to clone 21 blocks at the time, + // else we have to create a share memory + int i; + fseek(f,startblock*8,SEEK_SET); + if ( fread(tag_data,sizeof(iclass_block_t),endblock - startblock + 1,f) == 0 ) { + PrintAndLog("File reading error."); + fclose(f); + return 2; + } + + uint8_t MAC[4]={0x00,0x00,0x00,0x00}; + uint8_t div_key[8]={0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00}; + + if (!select_and_auth(KEY, MAC, div_key, use_credit_key, elite, rawkey, true)) + return 0; + + UsbCommand w = {CMD_ICLASS_CLONE,{startblock,endblock}}; + uint8_t *ptr; + // calculate all mac for every the block we will write + for (i = startblock; i <= endblock; i++){ + Calc_wb_mac(i,tag_data[i - startblock].d,div_key,MAC); + // usb command d start pointer = d + (i - 6) * 12 + // memcpy(pointer,tag_data[i - 6],8) 8 bytes + // memcpy(pointer + 8,mac,sizoof(mac) 4 bytes; + // next one + ptr = w.d.asBytes + (i - startblock) * 12; + memcpy(ptr, &(tag_data[i - startblock].d[0]), 8); + memcpy(ptr + 8,MAC, 4); + } + uint8_t p[12]; + for (i = 0; i <= endblock - startblock;i++){ + memcpy(p,w.d.asBytes + (i * 12),12); + printf("Block |%02x|",i + startblock); + printf(" %02x%02x%02x%02x%02x%02x%02x%02x |",p[0],p[1],p[2],p[3],p[4],p[5],p[6],p[7]); + printf(" MAC |%02x%02x%02x%02x|\n",p[8],p[9],p[10],p[11]); + } + UsbCommand resp; + SendCommand(&w); + if (!WaitForResponseTimeout(CMD_ACK,&resp,4500)) + { + PrintAndLog("Command execute timeout"); + return 0; + } + return 1; +} + +static int ReadBlock(uint8_t *KEY, uint8_t blockno, uint8_t keyType, bool elite, bool rawkey, bool verbose, bool auth) { + uint8_t MAC[4]={0x00,0x00,0x00,0x00}; + uint8_t div_key[8]={0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00}; + + if (auth) { + if (!select_and_auth(KEY, MAC, div_key, (keyType==0x18), elite, rawkey, verbose)) + return 0; + } else { + uint8_t CSN[8]={0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00}; + uint8_t CCNR[12]={0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00}; + if (!select_only(CSN, CCNR, (keyType==0x18), verbose)) + return 0; + } + + UsbCommand resp; + UsbCommand w = {CMD_ICLASS_READBLOCK, {blockno}}; + clearCommandBuffer(); + SendCommand(&w); + if (!WaitForResponseTimeout(CMD_ACK,&resp,4500)) + { + PrintAndLog("Command execute timeout"); + return 0; + } + uint8_t isOK = resp.arg[0] & 0xff; + if (!isOK) { + PrintAndLog("Read Block Failed"); + return 0; + } + //data read is stored in: resp.d.asBytes[0-15] + if (verbose) PrintAndLog("Block %02X: %s\n",blockno, sprint_hex(resp.d.asBytes,8)); + return 1; +} + +int usage_hf_iclass_readblock(void) { + PrintAndLog("Usage: hf iclass readblk b <Block> k <Key> c e|r\n"); + PrintAndLog("Options:"); + PrintAndLog(" b <Block> : The block number as 2 hex symbols"); + PrintAndLog(" k <Key> : Access Key as 16 hex symbols or 1 hex to select key from memory"); + PrintAndLog(" c : If 'c' is specified, the key set is assumed to be the credit key\n"); + PrintAndLog(" e : If 'e' is specified, elite computations applied to key"); + PrintAndLog(" r : If 'r' is specified, no computations applied to key"); + PrintAndLog("Samples:"); + PrintAndLog(" hf iclass readblk b 06 k 0011223344556677"); + PrintAndLog(" hf iclass readblk b 1B k 0011223344556677 c"); + PrintAndLog(" hf iclass readblk b 0A k 0"); + return 0; +} + +int CmdHFiClass_ReadBlock(const char *Cmd) { + uint8_t blockno=0; + uint8_t keyType = 0x88; //debit key + uint8_t KEY[8]={0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00}; + uint8_t keyNbr = 0; + uint8_t dataLen = 0; + char tempStr[50] = {0}; + bool elite = false; + bool rawkey = false; + bool errors = false; + bool auth = false; + uint8_t cmdp = 0; + while(param_getchar(Cmd, cmdp) != 0x00) + { + switch(param_getchar(Cmd, cmdp)) + { + case 'h': + case 'H': + return usage_hf_iclass_readblock(); + case 'b': + case 'B': + if (param_gethex(Cmd, cmdp+1, &blockno, 2)) { + PrintAndLog("Block No must include 2 HEX symbols\n"); + errors = true; + } + cmdp += 2; + break; + case 'c': + case 'C': + keyType = 0x18; + cmdp++; + break; + case 'e': + case 'E': + elite = true; + cmdp++; + break; + case 'k': + case 'K': + auth = true; + dataLen = param_getstr(Cmd, cmdp+1, tempStr, sizeof(tempStr)); + if (dataLen == 16) { + errors = param_gethex(tempStr, 0, KEY, dataLen); + } else if (dataLen == 1) { + keyNbr = param_get8(Cmd, cmdp+1); + if (keyNbr < ICLASS_KEYS_MAX) { + memcpy(KEY, iClass_Key_Table[keyNbr], 8); + } else { + PrintAndLog("\nERROR: Credit KeyNbr is invalid\n"); + errors = true; + } + } else { + PrintAndLog("\nERROR: Credit Key is incorrect length\n"); + errors = true; + } + cmdp += 2; + break; + case 'r': + case 'R': + rawkey = true; + cmdp++; + break; + default: + PrintAndLog("Unknown parameter '%c'\n", param_getchar(Cmd, cmdp)); + errors = true; + break; + } + if(errors) return usage_hf_iclass_readblock(); + } + + if (cmdp < 2) return usage_hf_iclass_readblock(); + if (!auth) + PrintAndLog("warning: no authentication used with read, only a few specific blocks can be read accurately without authentication."); + return ReadBlock(KEY, blockno, keyType, elite, rawkey, true, auth); +} + +int CmdHFiClass_loclass(const char *Cmd) { + char opt = param_getchar(Cmd, 0); + + if (strlen(Cmd)<1 || opt == 'h') { + PrintAndLog("Usage: hf iclass loclass [options]"); + PrintAndLog("Options:"); + PrintAndLog("h Show this help"); + PrintAndLog("t Perform self-test"); + PrintAndLog("f <filename> Bruteforce iclass dumpfile"); + PrintAndLog(" An iclass dumpfile is assumed to consist of an arbitrary number of"); + PrintAndLog(" malicious CSNs, and their protocol responses"); + PrintAndLog(" The binary format of the file is expected to be as follows: "); + PrintAndLog(" <8 byte CSN><8 byte CC><4 byte NR><4 byte MAC>"); + PrintAndLog(" <8 byte CSN><8 byte CC><4 byte NR><4 byte MAC>"); + PrintAndLog(" <8 byte CSN><8 byte CC><4 byte NR><4 byte MAC>"); + PrintAndLog(" ... totalling N*24 bytes"); + return 0; + } + char fileName[255] = {0}; + if(opt == 'f') + { + if(param_getstr(Cmd, 1, fileName, sizeof(fileName)) > 0) + { + return bruteforceFileNoKeys(fileName); + }else + { + PrintAndLog("You must specify a filename"); + } + } + else if(opt == 't') { int errors = testCipherUtils(); errors += testMAC(); @@ -574,18 +1277,447 @@ int CmdHFiClass_loclass(const char *Cmd) return 0; } +void printIclassDumpContents(uint8_t *iclass_dump, uint8_t startblock, uint8_t endblock, size_t filesize) { + uint8_t mem_config; + memcpy(&mem_config, iclass_dump + 13,1); + uint8_t maxmemcount; + uint8_t filemaxblock = filesize / 8; + if (mem_config & 0x80) + maxmemcount = 255; + else + maxmemcount = 31; + //PrintAndLog ("endblock: %d, filesize: %d, maxmemcount: %d, filemaxblock: %d", endblock,filesize, maxmemcount, filemaxblock); + + if (startblock == 0) + startblock = 6; + if ((endblock > maxmemcount) || (endblock == 0)) + endblock = maxmemcount; + + // remember endblock need to relate to zero-index arrays. + if (endblock > filemaxblock-1) + endblock = filemaxblock; + + int i = startblock; + printf("------+--+-------------------------+\n"); + while (i <= endblock) { + uint8_t *blk = iclass_dump + (i * 8); + printf("Block |%02X| %s|\n", i, sprint_hex(blk, 8) ); + i++; + } + printf("------+--+-------------------------+\n"); +} + +int usage_hf_iclass_readtagfile() { + PrintAndLog("Usage: hf iclass readtagfile <filename> [startblock] [endblock]"); + return 1; +} + +int CmdHFiClassReadTagFile(const char *Cmd) { + int startblock = 0; + int endblock = 0; + char tempnum[5]; + FILE *f; + char filename[FILE_PATH_SIZE]; + if (param_getstr(Cmd, 0, filename, sizeof(filename)) < 1) + return usage_hf_iclass_readtagfile(); + if (param_getstr(Cmd, 1, tempnum, sizeof(tempnum)) < 1) + startblock = 0; + else + sscanf(tempnum,"%d",&startblock); + + if (param_getstr(Cmd,2, tempnum, sizeof(tempnum)) < 1) + endblock = 0; + else + sscanf(tempnum,"%d",&endblock); + // file handling and reading + f = fopen(filename,"rb"); + if(!f) { + PrintAndLog("Failed to read from file '%s'", filename); + return 1; + } + fseek(f, 0, SEEK_END); + long fsize = ftell(f); + fseek(f, 0, SEEK_SET); + + if ( fsize < 0 ) { + PrintAndLog("Error, when getting filesize"); + fclose(f); + return 1; + } + + uint8_t *dump = malloc(fsize); + + size_t bytes_read = fread(dump, 1, fsize, f); + fclose(f); + uint8_t *csn = dump; + printf("------+--+-------------------------+\n"); + printf("CSN |00| %s|\n", sprint_hex(csn, 8) ); + // printIclassDumpInfo(dump); + printIclassDumpContents(dump,startblock,endblock,bytes_read); + free(dump); + return 0; +} + +/* +uint64_t xorcheck(uint64_t sdiv,uint64_t hdiv) { + uint64_t new_div = 0x00; + new_div ^= sdiv; + new_div ^= hdiv; + return new_div; +} + +uint64_t hexarray_to_uint64(uint8_t *key) { + char temp[17]; + uint64_t uint_key; + for (int i = 0;i < 8;i++) + sprintf(&temp[(i *2)],"%02X",key[i]); + temp[16] = '\0'; + if (sscanf(temp,"%016" SCNx64,&uint_key) < 1) + return 0; + return uint_key; +} +*/ +void HFiClassCalcDivKey(uint8_t *CSN, uint8_t *KEY, uint8_t *div_key, bool elite){ + uint8_t keytable[128] = {0}; + uint8_t key_index[8] = {0}; + if (elite) { + uint8_t key_sel[8] = { 0 }; + uint8_t key_sel_p[8] = { 0 }; + hash2(KEY, keytable); + hash1(CSN, key_index); + for(uint8_t i = 0; i < 8 ; i++) + key_sel[i] = keytable[key_index[i]] & 0xFF; + + //Permute from iclass format to standard format + permutekey_rev(key_sel, key_sel_p); + diversifyKey(CSN, key_sel_p, div_key); + } else { + diversifyKey(CSN, KEY, div_key); + } +} + +//when told CSN, oldkey, newkey, if new key is elite (elite), and if old key was elite (oldElite) +//calculate and return xor_div_key (ready for a key write command) +//print all div_keys if verbose +static void HFiClassCalcNewKey(uint8_t *CSN, uint8_t *OLDKEY, uint8_t *NEWKEY, uint8_t *xor_div_key, bool elite, bool oldElite, bool verbose){ + uint8_t old_div_key[8] = {0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00}; + uint8_t new_div_key[8] = {0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00}; + //get old div key + HFiClassCalcDivKey(CSN, OLDKEY, old_div_key, oldElite); + //get new div key + HFiClassCalcDivKey(CSN, NEWKEY, new_div_key, elite); + + for (uint8_t i = 0; i < sizeof(old_div_key); i++){ + xor_div_key[i] = old_div_key[i] ^ new_div_key[i]; + } + if (verbose) { + printf("Old Div Key : %s\n",sprint_hex(old_div_key,8)); + printf("New Div Key : %s\n",sprint_hex(new_div_key,8)); + printf("Xor Div Key : %s\n",sprint_hex(xor_div_key,8)); + } +} + +int usage_hf_iclass_calc_newkey(void) { + PrintAndLog("HELP : Manage iClass Keys in client memory:\n"); + PrintAndLog("Usage: hf iclass calc_newkey o <Old key> n <New key> s [csn] e"); + PrintAndLog(" Options:"); + PrintAndLog(" o <oldkey> : *specify a key as 16 hex symbols or a key number as 1 symbol"); + PrintAndLog(" n <newkey> : *specify a key as 16 hex symbols or a key number as 1 symbol"); + PrintAndLog(" s <csn> : specify a card Serial number to diversify the key (if omitted will attempt to read a csn)"); + PrintAndLog(" e : specify new key as elite calc"); + PrintAndLog(" ee : specify old and new key as elite calc"); + PrintAndLog("Samples:"); + PrintAndLog(" e key to e key given csn : hf iclass calcnewkey o 1122334455667788 n 2233445566778899 s deadbeafdeadbeaf ee"); + PrintAndLog(" std key to e key read csn: hf iclass calcnewkey o 1122334455667788 n 2233445566778899 e"); + PrintAndLog(" std to std read csn : hf iclass calcnewkey o 1122334455667788 n 2233445566778899"); + PrintAndLog("NOTE: * = required\n"); + + return 1; +} + +int CmdHFiClassCalcNewKey(const char *Cmd) { + uint8_t OLDKEY[8] = {0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00}; + uint8_t NEWKEY[8] = {0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00}; + uint8_t xor_div_key[8] = {0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00}; + uint8_t CSN[8] = {0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00}; + uint8_t CCNR[12] = {0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00}; + uint8_t keyNbr = 0; + uint8_t dataLen = 0; + char tempStr[50] = {0}; + bool givenCSN = false; + bool oldElite = false; + bool elite = false; + bool errors = false; + uint8_t cmdp = 0; + while(param_getchar(Cmd, cmdp) != 0x00) + { + switch(param_getchar(Cmd, cmdp)) + { + case 'h': + case 'H': + return usage_hf_iclass_calc_newkey(); + case 'e': + case 'E': + dataLen = param_getstr(Cmd, cmdp, tempStr, sizeof(tempStr)); + if (dataLen==2) + oldElite = true; + elite = true; + cmdp++; + break; + case 'n': + case 'N': + dataLen = param_getstr(Cmd, cmdp+1, tempStr, sizeof(tempStr)); + if (dataLen == 16) { + errors = param_gethex(tempStr, 0, NEWKEY, dataLen); + } else if (dataLen == 1) { + keyNbr = param_get8(Cmd, cmdp+1); + if (keyNbr < ICLASS_KEYS_MAX) { + memcpy(NEWKEY, iClass_Key_Table[keyNbr], 8); + } else { + PrintAndLog("\nERROR: NewKey Nbr is invalid\n"); + errors = true; + } + } else { + PrintAndLog("\nERROR: NewKey is incorrect length\n"); + errors = true; + } + cmdp += 2; + break; + case 'o': + case 'O': + dataLen = param_getstr(Cmd, cmdp+1, tempStr, sizeof(tempStr)); + if (dataLen == 16) { + errors = param_gethex(tempStr, 0, OLDKEY, dataLen); + } else if (dataLen == 1) { + keyNbr = param_get8(Cmd, cmdp+1); + if (keyNbr < ICLASS_KEYS_MAX) { + memcpy(OLDKEY, iClass_Key_Table[keyNbr], 8); + } else { + PrintAndLog("\nERROR: Credit KeyNbr is invalid\n"); + errors = true; + } + } else { + PrintAndLog("\nERROR: Credit Key is incorrect length\n"); + errors = true; + } + cmdp += 2; + break; + case 's': + case 'S': + givenCSN = true; + if (param_gethex(Cmd, cmdp+1, CSN, 16)) + return usage_hf_iclass_calc_newkey(); + cmdp += 2; + break; + default: + PrintAndLog("Unknown parameter '%c'\n", param_getchar(Cmd, cmdp)); + errors = true; + break; + } + if(errors) return usage_hf_iclass_calc_newkey(); + } + + if (cmdp < 4) return usage_hf_iclass_calc_newkey(); + + if (!givenCSN) + if (!select_only(CSN, CCNR, false, true)) + return 0; + + HFiClassCalcNewKey(CSN, OLDKEY, NEWKEY, xor_div_key, elite, oldElite, true); + return 0; +} + +static int loadKeys(char *filename) { + FILE *f; + f = fopen(filename,"rb"); + if(!f) { + PrintAndLog("Failed to read from file '%s'", filename); + return 0; + } + fseek(f, 0, SEEK_END); + long fsize = ftell(f); + fseek(f, 0, SEEK_SET); + + if ( fsize < 0 ) { + PrintAndLog("Error, when getting filesize"); + fclose(f); + return 1; + } + + uint8_t *dump = malloc(fsize); + + size_t bytes_read = fread(dump, 1, fsize, f); + fclose(f); + if (bytes_read > ICLASS_KEYS_MAX * 8){ + PrintAndLog("File is too long to load - bytes: %u", bytes_read); + free(dump); + return 0; + } + uint8_t i = 0; + for (; i < bytes_read/8; i++){ + memcpy(iClass_Key_Table[i],dump+(i*8),8); + } + free(dump); + PrintAndLog("%u keys loaded", i); + return 1; +} + +static int saveKeys(char *filename) { + FILE *f; + f = fopen(filename,"wb"); + if (f == NULL) { + printf("error opening file %s\n",filename); + return 0; + } + for (uint8_t i = 0; i < ICLASS_KEYS_MAX; i++){ + if (fwrite(iClass_Key_Table[i],8,1,f) != 1){ + PrintAndLog("save key failed to write to file: %s", filename); + break; + } + } + fclose(f); + return 0; +} + +static int printKeys(void) { + PrintAndLog(""); + for (uint8_t i = 0; i < ICLASS_KEYS_MAX; i++){ + PrintAndLog("%u: %s",i,sprint_hex(iClass_Key_Table[i],8)); + } + PrintAndLog(""); + return 0; +} + +int usage_hf_iclass_managekeys(void) { + PrintAndLog("HELP : Manage iClass Keys in client memory:\n"); + PrintAndLog("Usage: hf iclass managekeys n [keynbr] k [key] f [filename] s l p\n"); + PrintAndLog(" Options:"); + PrintAndLog(" n <keynbr> : specify the keyNbr to set in memory"); + PrintAndLog(" k <key> : set a key in memory"); + PrintAndLog(" f <filename>: specify a filename to use with load or save operations"); + PrintAndLog(" s : save keys in memory to file specified by filename"); + PrintAndLog(" l : load keys to memory from file specified by filename"); + PrintAndLog(" p : print keys loaded into memory\n"); + PrintAndLog("Samples:"); + PrintAndLog(" set key : hf iclass managekeys n 0 k 1122334455667788"); + PrintAndLog(" save key file: hf iclass managekeys f mykeys.bin s"); + PrintAndLog(" load key file: hf iclass managekeys f mykeys.bin l"); + PrintAndLog(" print keys : hf iclass managekeys p\n"); + return 0; +} + +int CmdHFiClassManageKeys(const char *Cmd) { + uint8_t keyNbr = 0; + uint8_t dataLen = 0; + uint8_t KEY[8] = {0}; + char filename[FILE_PATH_SIZE]; + uint8_t fileNameLen = 0; + bool errors = false; + uint8_t operation = 0; + char tempStr[20]; + uint8_t cmdp = 0; + + while(param_getchar(Cmd, cmdp) != 0x00) + { + switch(param_getchar(Cmd, cmdp)) + { + case 'h': + case 'H': + return usage_hf_iclass_managekeys(); + case 'f': + case 'F': + fileNameLen = param_getstr(Cmd, cmdp+1, filename, sizeof(filename)); + if (fileNameLen < 1) { + PrintAndLog("No filename found after f"); + errors = true; + } + cmdp += 2; + break; + case 'n': + case 'N': + keyNbr = param_get8(Cmd, cmdp+1); + if (keyNbr >= ICLASS_KEYS_MAX) { + PrintAndLog("Invalid block number"); + errors = true; + } + cmdp += 2; + break; + case 'k': + case 'K': + operation += 3; //set key + dataLen = param_getstr(Cmd, cmdp+1, tempStr, sizeof(tempStr)); + if (dataLen == 16) { //ul-c or ev1/ntag key length + errors = param_gethex(tempStr, 0, KEY, dataLen); + } else { + PrintAndLog("\nERROR: Key is incorrect length\n"); + errors = true; + } + cmdp += 2; + break; + case 'p': + case 'P': + operation += 4; //print keys in memory + cmdp++; + break; + case 'l': + case 'L': + operation += 5; //load keys from file + cmdp++; + break; + case 's': + case 'S': + operation += 6; //save keys to file + cmdp++; + break; + default: + PrintAndLog("Unknown parameter '%c'\n", param_getchar(Cmd, cmdp)); + errors = true; + break; + } + if(errors) return usage_hf_iclass_managekeys(); + } + if (operation == 0){ + PrintAndLog("no operation specified (load, save, or print)\n"); + return usage_hf_iclass_managekeys(); + } + if (operation > 6){ + PrintAndLog("Too many operations specified\n"); + return usage_hf_iclass_managekeys(); + } + if (operation > 4 && fileNameLen == 0){ + PrintAndLog("You must enter a filename when loading or saving\n"); + return usage_hf_iclass_managekeys(); + } + + switch (operation){ + case 3: memcpy(iClass_Key_Table[keyNbr], KEY, 8); return 1; + case 4: return printKeys(); + case 5: return loadKeys(filename); + case 6: return saveKeys(filename); + break; + } + return 0; +} + static command_t CommandTable[] = { - {"help", CmdHelp, 1, "This help"}, - {"list", CmdHFiClassList, 0, "[Deprecated] List iClass history"}, - {"snoop", CmdHFiClassSnoop, 0, "Eavesdrop iClass communication"}, - {"sim", CmdHFiClassSim, 0, "Simulate iClass tag"}, - {"reader",CmdHFiClassReader, 0, "Read an iClass tag"}, - {"replay",CmdHFiClassReader_Replay, 0, "Read an iClass tag via Reply Attack"}, - {"dump", CmdHFiClassReader_Dump, 0, "Authenticate and Dump iClass tag"}, -// {"write", CmdHFiClass_iso14443A_write, 0, "Authenticate and Write iClass block"}, - {"loclass", CmdHFiClass_loclass, 1, "Use loclass to perform bruteforce of reader attack dump"}, - {"eload", CmdHFiClassELoad, 0, "[experimental] Load data into iclass emulator memory"}, + {"help", CmdHelp, 1, "This help"}, + {"calcnewkey", CmdHFiClassCalcNewKey, 1, "[options..] Calc Diversified keys (blocks 3 & 4) to write new keys"}, + {"clone", CmdHFiClassCloneTag, 0, "[options..] Authenticate and Clone from iClass bin file"}, + {"decrypt", CmdHFiClassDecrypt, 1, "[f <fname>] Decrypt tagdump" }, + {"dump", CmdHFiClassReader_Dump, 0, "[options..] Authenticate and Dump iClass tag's AA1"}, + {"eload", CmdHFiClassELoad, 0, "[f <fname>] (experimental) Load data into iClass emulator memory"}, + {"encryptblk", CmdHFiClassEncryptBlk, 1, "<BlockData> Encrypt given block data"}, + {"list", CmdHFiClassList, 0, " (Deprecated) List iClass history"}, + {"loclass", CmdHFiClass_loclass, 1, "[options..] Use loclass to perform bruteforce of reader attack dump"}, + {"managekeys", CmdHFiClassManageKeys, 1, "[options..] Manage the keys to use with iClass"}, + {"readblk", CmdHFiClass_ReadBlock, 0, "[options..] Authenticate and Read iClass block"}, + {"reader", CmdHFiClassReader, 0, " Look for iClass tags until a key or the pm3 button is pressed"}, + {"readtagfile", CmdHFiClassReadTagFile, 1, "[options..] Display Content from tagfile"}, + {"replay", CmdHFiClassReader_Replay, 0, "<mac> Read an iClass tag via Reply Attack"}, + {"sim", CmdHFiClassSim, 0, "[options..] Simulate iClass tag"}, + {"snoop", CmdHFiClassSnoop, 0, " Eavesdrop iClass communication"}, + {"writeblk", CmdHFiClass_WriteBlock, 0, "[options..] Authenticate and Write iClass block"}, {NULL, NULL, 0, NULL} };