X-Git-Url: http://cvs.zerfleddert.de/cgi-bin/gitweb.cgi/proxmark3-svn/blobdiff_plain/ad939de5017f3451376d6f559858a30bae675964..refs/pull/938/head:/client/cmdhficlass.c?ds=inline diff --git a/client/cmdhficlass.c b/client/cmdhficlass.c index 499f7aae..93e46b67 100644 --- a/client/cmdhficlass.c +++ b/client/cmdhficlass.c @@ -2,6 +2,7 @@ // Copyright (C) 2010 iZsh <izsh at fail0verflow.com>, Hagen Fritsch // Copyright (C) 2011 Gerhard de Koning Gans // Copyright (C) 2014 Midnitesnake & Andy Davies & Martin Holst Swende +// Copyright (C) 2019 piwi // // This code is licensed to you under the terms of the GNU GPL, version 2 or, // at your option, any later version. See the LICENSE.txt file for the text of @@ -18,12 +19,13 @@ #include "iso14443crc.h" // Can also be used for iClass, using 0xE012 as CRC-type #include "comms.h" #include "ui.h" +#include "cliparser/cliparser.h" #include "cmdparser.h" #include "cmdhficlass.h" #include "common.h" #include "util.h" #include "cmdmain.h" -#include "polarssl/des.h" +#include "mbedtls/des.h" #include "loclass/cipherutils.h" #include "loclass/cipher.h" #include "loclass/ikeys.h" @@ -33,8 +35,8 @@ #include "usb_cmd.h" #include "cmdhfmfu.h" #include "util_posix.h" +#include "cmdhf14a.h" // DropField() -static int CmdHelp(const char *Cmd); #define ICLASS_KEYS_MAX 8 static uint8_t iClass_Key_Table[ICLASS_KEYS_MAX][8] = { @@ -48,12 +50,109 @@ static uint8_t iClass_Key_Table[ICLASS_KEYS_MAX][8] = { { 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00 } }; -typedef struct iclass_block { - uint8_t d[8]; -} iclass_block_t; -int usage_hf_iclass_chk(void) { - PrintAndLog("Checkkeys loads a dictionary text file with 8byte hex keys to test authenticating against a iClass tag"); +// iclass / picopass chip config structures and shared routines +typedef struct { + uint8_t app_limit; //[8] + uint8_t otp[2]; //[9-10] + uint8_t block_writelock;//[11] + uint8_t chip_config; //[12] + uint8_t mem_config; //[13] + uint8_t eas; //[14] + uint8_t fuses; //[15] +} picopass_conf_block; + +typedef struct { + uint8_t csn[8]; + picopass_conf_block conf; + uint8_t epurse[8]; + uint8_t key_d[8]; + uint8_t key_c[8]; + uint8_t app_issuer_area[8]; +} picopass_hdr; + + +static void fuse_config(const picopass_hdr *hdr) { + uint8_t fuses = hdr->conf.fuses; + + if (fuses & FUSE_FPERS) + PrintAndLog(" Mode: Personalization [Programmable]"); + else + PrintAndLog(" Mode: Application [Locked]"); + + if (fuses & FUSE_CODING1) + PrintAndLog("Coding: RFU"); + else { + if (fuses & FUSE_CODING0) + PrintAndLog("Coding: ISO 14443-2 B/ISO 15693"); + else + PrintAndLog("Coding: ISO 14443B only"); + } + if ((fuses & FUSE_CRYPT1) && (fuses & FUSE_CRYPT0)) PrintAndLog(" Crypt: Secured page, keys not locked"); + if ((fuses & FUSE_CRYPT1) && !(fuses & FUSE_CRYPT0)) PrintAndLog(" Crypt: Secured page, keys locked"); + if (!(fuses & FUSE_CRYPT1) && (fuses & FUSE_CRYPT0)) PrintAndLog(" Crypt: Non secured page"); + if (!(fuses & FUSE_CRYPT1) && !(fuses & FUSE_CRYPT0)) PrintAndLog(" Crypt: No auth possible. Read only if RA is enabled"); + + if (fuses & FUSE_RA) + PrintAndLog(" RA: Read access enabled"); + else + PrintAndLog(" RA: Read access not enabled"); +} + + +static void getMemConfig(uint8_t mem_cfg, uint8_t chip_cfg, uint8_t *max_blk, uint8_t *app_areas, uint8_t *kb) { + // mem-bit 5, mem-bit 7, chip-bit 4: defines chip type + if((chip_cfg & 0x10) && !(mem_cfg & 0x80) && !(mem_cfg & 0x20)) { + *kb = 2; + *app_areas = 2; + *max_blk = 31; + } else if((chip_cfg & 0x10) && (mem_cfg & 0x80) && !(mem_cfg & 0x20)) { + *kb = 16; + *app_areas = 2; + *max_blk = 255; //16kb + } else if(!(chip_cfg & 0x10) && !(mem_cfg & 0x80) && !(mem_cfg & 0x20)) { + *kb = 16; + *app_areas = 16; + *max_blk = 255; //16kb + } else if((chip_cfg & 0x10) && (mem_cfg & 0x80) && (mem_cfg & 0x20)) { + *kb = 32; + *app_areas = 3; + *max_blk = 255; //16kb + } else if(!(chip_cfg & 0x10) && !(mem_cfg & 0x80) && (mem_cfg & 0x20)) { + *kb = 32; + *app_areas = 17; + *max_blk = 255; //16kb + } else { + *kb = 32; + *app_areas = 2; + *max_blk = 255; + } +} + + +static void mem_app_config(const picopass_hdr *hdr) { + uint8_t mem = hdr->conf.mem_config; + uint8_t chip = hdr->conf.chip_config; + uint8_t applimit = hdr->conf.app_limit; + if (applimit < 6) applimit = 26; + uint8_t kb = 2; + uint8_t app_areas = 2; + uint8_t max_blk = 31; + getMemConfig(mem, chip, &max_blk, &app_areas, &kb); + PrintAndLog(" Mem: %u KBits/%u App Areas (%u * 8 bytes) [%02X]", kb, app_areas, max_blk+1, mem); + PrintAndLog(" AA1: blocks 06-%02X", applimit); + PrintAndLog(" AA2: blocks %02X-%02X", applimit+1, max_blk); +} + + +static void printIclassDumpInfo(uint8_t* iclass_dump) { + fuse_config((picopass_hdr*)iclass_dump); + mem_app_config((picopass_hdr*)iclass_dump); +} + + +static void usage_hf_iclass_chk(void) { + PrintAndLog("Checkkeys loads a dictionary text file with 8byte hex keys to test authenticating against a iClass tag"); PrintAndLog("Usage: hf iclass chk [h|e|r] <f (*.dic)>"); PrintAndLog("Options:"); PrintAndLog("h Show this help"); @@ -61,31 +160,46 @@ int usage_hf_iclass_chk(void) { PrintAndLog(" e target Elite / High security key scheme"); PrintAndLog(" r interpret dictionary file as raw (diversified keys)"); PrintAndLog("Samples:"); - PrintAndLog(" hf iclass chk f default_iclass_keys.dic"); - PrintAndLog(" hf iclass chk f default_iclass_keys.dic e"); - return 0; + PrintAndLog(" hf iclass chk f default_iclass_keys.dic"); + PrintAndLog(" hf iclass chk f default_iclass_keys.dic e"); } -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 - res = res ^ (res >> 4); // 4th pass - return res & 1; -} -int CmdHFiClassList(const char *Cmd) { +static int CmdHFiClassList(const char *Cmd) { PrintAndLog("Deprecated command, use 'hf list iclass' instead"); return 0; } -int CmdHFiClassSnoop(const char *Cmd) { - UsbCommand c = {CMD_SNOOP_ICLASS}; + +static int CmdHFiClassSnoop(const char *Cmd) { + + CLIParserInit("hf iclass snoop", "\nSnoop a communication between an iClass Reader and an iClass Tag.", NULL); + void* argtable[] = { + arg_param_begin, + arg_lit0("j", "jam", "Jam (prevent) e-purse Updates"), + arg_param_end + }; + if (CLIParserParseString(Cmd, argtable, arg_getsize(argtable), true)){ + CLIParserFree(); + return 0; + } + + bool jam_epurse_update = arg_get_lit(1); + + const uint8_t update_epurse_sequence[2] = {0x87, 0x02}; + + UsbCommand c = {CMD_SNOOP_ICLASS, {0}}; + if (jam_epurse_update) { + c.arg[0] = sizeof(update_epurse_sequence); + memcpy(c.d.asBytes, update_epurse_sequence, sizeof(update_epurse_sequence)); + } SendCommand(&c); + return 0; } -int usage_hf_iclass_sim(void) { + +static void usage_hf_iclass_sim(void) { PrintAndLog("Usage: hf iclass sim <option> [CSN]"); PrintAndLog(" options"); PrintAndLog(" 0 <CSN> simulate the given CSN"); @@ -96,58 +210,73 @@ int usage_hf_iclass_sim(void) { PrintAndLog(" example: hf iclass sim 2"); PrintAndLog(" example: hf iclass eload 'tagdump.bin'"); PrintAndLog(" hf iclass sim 3"); - return 0; } + +// the original malicious IDs from Flavio D. Garcia, Gerhard de Koning Gans, Roel Verdult, +// and Milosch Meriac. Dismantling iClass and iClass Elite. #define NUM_CSNS 15 -int CmdHFiClassSim(const char *Cmd) { +static uint8_t csns[8 * NUM_CSNS] = { + 0x00, 0x0B, 0x0F, 0xFF, 0xF7, 0xFF, 0x12, 0xE0, + 0x00, 0x04, 0x0E, 0x08, 0xF7, 0xFF, 0x12, 0xE0, + 0x00, 0x09, 0x0D, 0x05, 0xF7, 0xFF, 0x12, 0xE0, + 0x00, 0x0A, 0x0C, 0x06, 0xF7, 0xFF, 0x12, 0xE0, + 0x00, 0x0F, 0x0B, 0x03, 0xF7, 0xFF, 0x12, 0xE0, + 0x00, 0x08, 0x0A, 0x0C, 0xF7, 0xFF, 0x12, 0xE0, + 0x00, 0x0D, 0x09, 0x09, 0xF7, 0xFF, 0x12, 0xE0, + 0x00, 0x0E, 0x08, 0x0A, 0xF7, 0xFF, 0x12, 0xE0, + 0x00, 0x03, 0x07, 0x17, 0xF7, 0xFF, 0x12, 0xE0, + 0x00, 0x3C, 0x06, 0xE0, 0xF7, 0xFF, 0x12, 0xE0, + 0x00, 0x01, 0x05, 0x1D, 0xF7, 0xFF, 0x12, 0xE0, + 0x00, 0x02, 0x04, 0x1E, 0xF7, 0xFF, 0x12, 0xE0, + 0x00, 0x07, 0x03, 0x1B, 0xF7, 0xFF, 0x12, 0xE0, + 0x00, 0x00, 0x02, 0x24, 0xF7, 0xFF, 0x12, 0xE0, + 0x00, 0x05, 0x01, 0x21, 0xF7, 0xFF, 0x12, 0xE0 }; + + +// pre-defined 9 CSNs by iceman. +// only one csn depend on several others. +// six depends only on the first csn, (0,1, 0x45) + +// #define NUM_CSNS 9 +// static uint8_t csns[8 * NUM_CSNS] = { + // 0x01, 0x0A, 0x0F, 0xFF, 0xF7, 0xFF, 0x12, 0xE0, + // 0x0C, 0x06, 0x0C, 0xFE, 0xF7, 0xFF, 0x12, 0xE0, + // 0x10, 0x97, 0x83, 0x7B, 0xF7, 0xFF, 0x12, 0xE0, + // 0x13, 0x97, 0x82, 0x7A, 0xF7, 0xFF, 0x12, 0xE0, + // 0x07, 0x0E, 0x0D, 0xF9, 0xF7, 0xFF, 0x12, 0xE0, + // 0x14, 0x96, 0x84, 0x76, 0xF7, 0xFF, 0x12, 0xE0, + // 0x17, 0x96, 0x85, 0x71, 0xF7, 0xFF, 0x12, 0xE0, + // 0xCE, 0xC5, 0x0F, 0x77, 0xF7, 0xFF, 0x12, 0xE0, + // 0xD2, 0x5A, 0x82, 0xF8, 0xF7, 0xFF, 0x12, 0xE0 + // //0x04, 0x08, 0x9F, 0x78, 0x6E, 0xFF, 0x12, 0xE0 +// }; + + +static 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) { - return usage_hf_iclass_sim(); + if (strlen(Cmd) < 1) { + usage_hf_iclass_sim(); + return 0; } simType = param_get8ex(Cmd, 0, 0, 10); - if(simType == 0) - { + if (simType == ICLASS_SIM_MODE_CSN) { if (param_gethex(Cmd, 1, CSN, 16)) { PrintAndLog("A CSN should consist of 16 HEX symbols"); - return usage_hf_iclass_sim(); + usage_hf_iclass_sim(); + return 0; } - PrintAndLog("--simtype:%02x csn:%s", simType, sprint_hex(CSN, 8)); } - if(simType > 3) - { - PrintAndLog("Undefined simptype %d", simType); - return usage_hf_iclass_sim(); - } - uint8_t numberOfCSNs=0; - if(simType == 2) - { - UsbCommand c = {CMD_SIMULATE_TAG_ICLASS, {simType,NUM_CSNS}}; + if (simType == ICLASS_SIM_MODE_READER_ATTACK) { + 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, 0x04, 0x0E, 0x08, 0xF7, 0xFF, 0x12, 0xE0, - 0x00, 0x09, 0x0D, 0x05, 0xF7, 0xFF, 0x12, 0xE0, - 0x00, 0x0A, 0x0C, 0x06, 0xF7, 0xFF, 0x12, 0xE0, - 0x00, 0x0F, 0x0B, 0x03, 0xF7, 0xFF, 0x12, 0xE0, - 0x00, 0x08, 0x0A, 0x0C, 0xF7, 0xFF, 0x12, 0xE0, - 0x00, 0x0D, 0x09, 0x09, 0xF7, 0xFF, 0x12, 0xE0, - 0x00, 0x0E, 0x08, 0x0A, 0xF7, 0xFF, 0x12, 0xE0, - 0x00, 0x03, 0x07, 0x17, 0xF7, 0xFF, 0x12, 0xE0, - 0x00, 0x3C, 0x06, 0xE0, 0xF7, 0xFF, 0x12, 0xE0, - 0x00, 0x01, 0x05, 0x1D, 0xF7, 0xFF, 0x12, 0xE0, - 0x00, 0x02, 0x04, 0x1E, 0xF7, 0xFF, 0x12, 0xE0, - 0x00, 0x07, 0x03, 0x1B, 0xF7, 0xFF, 0x12, 0xE0, - 0x00, 0x00, 0x02, 0x24, 0xF7, 0xFF, 0x12, 0xE0, - 0x00, 0x05, 0x01, 0x21, 0xF7, 0xFF, 0x12, 0xE0 }; - - memcpy(c.d.asBytes, csns, 8*NUM_CSNS); + memcpy(c.d.asBytes, csns, 8 * NUM_CSNS); SendCommand(&c); if (!WaitForResponseTimeout(CMD_ACK, &resp, -1)) { @@ -156,9 +285,9 @@ int CmdHFiClassSim(const char *Cmd) { } uint8_t num_mac_responses = resp.arg[1]; - PrintAndLog("Mac responses: %d MACs obtained (should be %d)", num_mac_responses,NUM_CSNS); + PrintAndLog("Mac responses: %d MACs obtained (should be %d)", num_mac_responses, NUM_CSNS); - size_t datalen = NUM_CSNS*24; + size_t datalen = NUM_CSNS * 24; /* * Now, time to dump to file. We'll use this format: * <8-byte CSN><8-byte CC><4 byte NR><4 byte MAC>.... @@ -166,61 +295,64 @@ int CmdHFiClassSim(const char *Cmd) { * 8 * 24 bytes. * * The returndata from the pm3 is on the following format - * <4 byte NR><4 byte MAC> - * CC are all zeroes, CSN is the same as was sent in + * <8 byte CC><4 byte NR><4 byte MAC> + * CSN is the same as was sent in **/ void* dump = malloc(datalen); - memset(dump,0,datalen);//<-- Need zeroes for the CC-field - uint8_t i = 0; - for(i = 0 ; i < NUM_CSNS ; i++) - { - memcpy(dump+i*24, csns+i*8,8); //CSN - //8 zero bytes here... + for(int i = 0; i < NUM_CSNS; i++) { + memcpy(dump + i*24, csns+i*8, 8); //CSN + //copy CC from response + memcpy(dump + i*24 + 8, resp.d.asBytes + i*16, 8); //Then comes NR_MAC (eight bytes from the response) - memcpy(dump+i*24+16,resp.d.asBytes+i*8,8); - + memcpy(dump + i*24 + 16, resp.d.asBytes + i*16 + 8, 8); } /** Now, save to dumpfile **/ saveFile("iclass_mac_attack", "bin", dump,datalen); free(dump); - }else - { - UsbCommand c = {CMD_SIMULATE_TAG_ICLASS, {simType,numberOfCSNs}}; + + } else if (simType == ICLASS_SIM_MODE_CSN || simType == ICLASS_SIM_MODE_CSN_DEFAULT || simType == ICLASS_SIM_MODE_FULL) { + UsbCommand c = {CMD_SIMULATE_TAG_ICLASS, {simType, 0}}; memcpy(c.d.asBytes, CSN, 8); SendCommand(&c); + + } else { + PrintAndLog("Undefined simtype %d", simType); + usage_hf_iclass_sim(); + return 0; } return 0; } -int HFiClassReader(const char *Cmd, bool loop, bool verbose) { + +int HFiClassReader(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 c = {CMD_READER_ICLASS, {FLAG_ICLASS_READER_INIT | FLAG_ICLASS_READER_CLEARTRACE | FLAG_ICLASS_READER_CSN | FLAG_ICLASS_READER_CONF | FLAG_ICLASS_READER_CC | FLAG_ICLASS_READER_AA} }; UsbCommand resp; - while(!ukbhit()){ + + while (!ukbhit()) { SendCommand(&c); - if (WaitForResponseTimeout(CMD_ACK,&resp, 4500)) { + if (WaitForResponseTimeout(CMD_ACK, &resp, 1000)) { 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) { + // no tag found + if (readStatus == 0 && !loop) { // abort if (verbose) PrintAndLog("Quitting..."); + DropField(); return 0; } - if( readStatus & FLAG_ICLASS_READER_CSN) { + if (readStatus & FLAG_ICLASS_READER_CSN) { PrintAndLog(" CSN: %s",sprint_hex(data,8)); tagFound = true; } - if( readStatus & FLAG_ICLASS_READER_CC) { + if (readStatus & FLAG_ICLASS_READER_CC) { PrintAndLog(" CC: %s",sprint_hex(data+16,8)); } - if( readStatus & FLAG_ICLASS_READER_CONF) { + if (readStatus & FLAG_ICLASS_READER_CONF) { printIclassDumpInfo(data); } if (readStatus & FLAG_ICLASS_READER_AA) { @@ -229,78 +361,73 @@ int HFiClassReader(const char *Cmd, bool loop, bool verbose) { 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 { - if (verbose) PrintAndLog("Command execute timeout"); + if (verbose) PrintAndLog("Error: No response from Proxmark."); + break; } if (!loop) break; } + + DropField(); return 0; } -int CmdHFiClassReader(const char *Cmd) { - return HFiClassReader(Cmd, true, true); + +static void usage_hf_iclass_reader(void) { + PrintAndLogEx(NORMAL, "Act as a Iclass reader. Look for iClass tags until Enter or the pm3 button is pressed\n"); + PrintAndLogEx(NORMAL, "Usage: hf iclass reader [h] [1]\n"); + PrintAndLogEx(NORMAL, "Options:"); + PrintAndLogEx(NORMAL, " h This help text"); + PrintAndLogEx(NORMAL, " 1 read only 1 tag"); + PrintAndLogEx(NORMAL, "Examples:"); + PrintAndLogEx(NORMAL, " hf iclass reader 1"); } -int CmdHFiClassReader_Replay(const char *Cmd) { - uint8_t readerType = 0; - uint8_t MAC[4]={0x00, 0x00, 0x00, 0x00}; - if (strlen(Cmd)<1) { - PrintAndLog("Usage: hf iclass replay <MAC>"); - PrintAndLog(" sample: hf iclass replay 00112233"); +static int CmdHFiClassReader(const char *Cmd) { + char cmdp = tolower(param_getchar(Cmd, 0)); + if (cmdp == 'h') { + usage_hf_iclass_reader(); return 0; } - - if (param_gethex(Cmd, 0, MAC, 8)) { - PrintAndLog("MAC must include 8 HEX symbols"); - return 1; - } - - UsbCommand c = {CMD_READER_ICLASS_REPLAY, {readerType}}; - memcpy(c.d.asBytes, MAC, 4); - SendCommand(&c); - - return 0; + bool findone = (cmdp == '1') ? false : true; + return HFiClassReader(findone, true); } -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 hf_iclass_eload_usage(void) { +static void usage_hf_iclass_eload(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 CmdHFiClassELoad(const char *Cmd) { + +static int CmdHFiClassELoad(const char *Cmd) { char opt = param_getchar(Cmd, 0); - if (strlen(Cmd)<1 || opt == 'h') - return hf_iclass_eload_usage(); + if (strlen(Cmd)<1 || opt == 'h') { + usage_hf_iclass_eload(); + return 0; + } //File handling and reading FILE *f; char filename[FILE_PATH_SIZE]; - if(opt == 'f' && param_getstr(Cmd, 1, filename, sizeof(filename)) > 0) - { + if (opt == 'f' && param_getstr(Cmd, 1, filename, sizeof(filename)) > 0) { f = fopen(filename, "rb"); - }else{ - return hf_iclass_eload_usage(); + } else { + usage_hf_iclass_eload(); + return 0; } - if(!f) { + if (!f) { PrintAndLog("Failed to read from file '%s'", filename); return 1; } @@ -323,8 +450,7 @@ int CmdHFiClassELoad(const char *Cmd) { printIclassDumpInfo(dump); //Validate - if (bytes_read < fsize) - { + if (bytes_read < fsize) { prnlog("Error, could only read %d bytes (should be %d)",bytes_read, fsize ); free(dump); return 1; @@ -333,10 +459,10 @@ int CmdHFiClassELoad(const char *Cmd) { uint32_t bytes_sent = 0; uint32_t bytes_remaining = bytes_read; - while(bytes_remaining > 0){ + while (bytes_remaining > 0) { uint32_t bytes_in_packet = MIN(USB_CMD_DATA_SIZE, bytes_remaining); UsbCommand c = {CMD_ICLASS_EML_MEMSET, {bytes_sent,bytes_in_packet,0}}; - memcpy(c.d.asBytes, dump, bytes_in_packet); + memcpy(c.d.asBytes, dump+bytes_sent, bytes_in_packet); SendCommand(&c); bytes_remaining -= bytes_in_packet; bytes_sent += bytes_in_packet; @@ -346,6 +472,7 @@ 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) { @@ -370,7 +497,8 @@ static int readKeyfile(const char *filename, size_t len, uint8_t* buffer) { return 0; } -int usage_hf_iclass_decrypt(void) { + +static void 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"); @@ -381,10 +509,10 @@ int usage_hf_iclass_decrypt(void) { 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; } -int CmdHFiClassDecrypt(const char *Cmd) { + +static int CmdHFiClassDecrypt(const char *Cmd) { uint8_t key[16] = { 0 }; if(readKeyfile("iclass_decryptionkey.bin", 16, key)) { @@ -393,8 +521,10 @@ int CmdHFiClassDecrypt(const char *Cmd) { } PrintAndLog("Decryption file found... "); char opt = param_getchar(Cmd, 0); - if (strlen(Cmd)<1 || opt == 'h') - return usage_hf_iclass_decrypt(); + if (strlen(Cmd)<1 || opt == 'h') { + usage_hf_iclass_decrypt(); + return 0; + } //Open the tagdump-file FILE *f; @@ -406,7 +536,8 @@ int CmdHFiClassDecrypt(const char *Cmd) { return 1; } } else { - return usage_hf_iclass_decrypt(); + usage_hf_iclass_decrypt(); + return 0; } fseek(f, 0, SEEK_END); @@ -414,8 +545,8 @@ int CmdHFiClassDecrypt(const char *Cmd) { 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); + mbedtls_des3_context ctx = { {0} }; + mbedtls_des3_set2key_dec( &ctx, key); size_t bytes_read = fread(enc_dump, 1, 8, f); //Use the first block (CSN) for filename @@ -431,7 +562,7 @@ int CmdHFiClassDecrypt(const char *Cmd) { { memcpy(decrypted+(blocknum*8), enc_dump, 8); }else{ - des3_crypt_ecb(&ctx, enc_dump,decrypted +(blocknum*8) ); + mbedtls_des3_crypt_ecb(&ctx, enc_dump,decrypted +(blocknum*8) ); } printvar("decrypted block", decrypted +(blocknum*8), 8); bytes_read = fread(enc_dump, 1, 8, f); @@ -444,7 +575,8 @@ int CmdHFiClassDecrypt(const char *Cmd) { return 0; } -int usage_hf_iclass_encrypt(void) { + +static void 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"); @@ -452,9 +584,9 @@ int usage_hf_iclass_encrypt(void) { 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)) @@ -466,54 +598,54 @@ static int iClassEncryptBlkData(uint8_t *blkData) { 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); + mbedtls_des3_context ctx = { {0} }; + mbedtls_des3_set2key_enc( &ctx, key); + + mbedtls_des3_crypt_ecb(&ctx, blkData,encrypted); //printvar("decrypted block", decrypted, 8); memcpy(blkData,encrypted,8); return 1; } -int CmdHFiClassEncryptBlk(const char *Cmd) { + +static 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(); - + if (strlen(Cmd)<1 || opt == 'h') { + usage_hf_iclass_encrypt(); + return 0; + } //get the bytes to encrypt - if (param_gethex(Cmd, 0, blkData, 16)) - { + if (param_gethex(Cmd, 0, blkData, 16)) { PrintAndLog("BlockData must include 16 HEX symbols"); return 0; } if (!iClassEncryptBlkData(blkData)) return 0; - 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]) { + +static 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); + 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; - 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; +static bool iClass_select(uint8_t *CSN, bool verbose, bool cleartrace, bool init) { + UsbCommand c = {CMD_READER_ICLASS, {FLAG_ICLASS_READER_CSN}}; + if (init) c.arg[0] |= FLAG_ICLASS_READER_INIT; + if (cleartrace) c.arg[0] |= FLAG_ICLASS_READER_CLEARTRACE; + + UsbCommand resp; clearCommandBuffer(); SendCommand(&c); - if (!WaitForResponseTimeout(CMD_ACK,&resp,4500)) - { + if (!WaitForResponseTimeout(CMD_ACK, &resp, 4500)) { PrintAndLog("Command execute timeout"); return false; } @@ -521,45 +653,95 @@ static bool select_only(uint8_t *CSN, uint8_t *CCNR, bool use_credit_key, bool v 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"); + if (isOK & FLAG_ICLASS_READER_CSN) { + memcpy(CSN, data, 8); + if (verbose) PrintAndLog("CSN: %s", sprint_hex(CSN, 8)); + } else { + PrintAndLog("Failed to select card! Aborting"); return false; } - return true; + return true; } -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}; - if (!select_only(CSN, CCNR, use_credit_key, verbose)) - return false; +static 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); + } +} + + +static bool iClass_authenticate(uint8_t *CSN, uint8_t *KEY, uint8_t *MAC, uint8_t *div_key, bool use_credit_key, bool elite, bool rawkey, bool replay, bool verbose) { //get div_key - if(rawkey) + if (rawkey || replay) memcpy(div_key, KEY, 8); else HFiClassCalcDivKey(CSN, KEY, div_key, elite); - if (verbose) 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]); - doMAC(CCNR, div_key, MAC); + char keytypetext[23] = "legacy diversified key"; + if (rawkey) { + strcpy(keytypetext, "raw key"); + } else if (replay) { + strcpy(keytypetext, "replayed NR/MAC"); + } else if (elite) { + strcpy(keytypetext, "Elite diversified key"); + } + + if (verbose) PrintAndLog("Authenticating with %s: %s", keytypetext, sprint_hex(div_key, 8)); + UsbCommand resp; - UsbCommand d = {CMD_ICLASS_AUTHENTICATION, {0}}; - memcpy(d.d.asBytes, MAC, 4); + UsbCommand d = {CMD_ICLASS_READCHECK, {2, use_credit_key, 0}}; + clearCommandBuffer(); SendCommand(&d); - if (!WaitForResponseTimeout(CMD_ACK,&resp,4500)) - { - if (verbose) PrintAndLog("Auth Command execute timeout"); + + if (!WaitForResponseTimeout(CMD_ACK, &resp, 4500)) { + if (verbose) PrintAndLog("Auth Command (READCHECK[2]) execute timeout"); return false; } - uint8_t isOK = resp.arg[0] & 0xff; + bool isOK = resp.arg[0]; + if (!isOK) { + if (verbose) PrintAndLog("Couldn't get Card Challenge"); + return false; + } + + if (replay) { + memcpy(MAC, KEY+4, 4); + } else { + uint8_t CCNR[12]; + memcpy(CCNR, resp.d.asBytes, 8); + memset(CCNR+8, 0x00, 4); // default NR = {0, 0, 0, 0} + doMAC(CCNR, div_key, MAC); + } + + d.cmd = CMD_ICLASS_CHECK; + if (replay) { + memcpy(d.d.asBytes, KEY, 8); + } else { + memset(d.d.asBytes, 0x00, 4); // default NR = {0, 0, 0, 0} + memcpy(d.d.asBytes+4, MAC, 4); + } + clearCommandBuffer(); + SendCommand(&d); + if (!WaitForResponseTimeout(CMD_ACK, &resp, 4500)) { + if (verbose) PrintAndLog("Auth Command (CHECK) execute timeout"); + return false; + } + isOK = resp.arg[0]; if (!isOK) { if (verbose) PrintAndLog("Authentication error"); return false; @@ -567,31 +749,64 @@ static bool select_and_auth(uint8_t *KEY, uint8_t *MAC, uint8_t *div_key, bool u return true; } -int usage_hf_iclass_dump(void) { - PrintAndLog("Usage: hf iclass dump f <fileName> k <Key> c <CreditKey> e|r\n"); + +static void usage_hf_iclass_dump(void) { + PrintAndLog("Usage: hf iclass dump f <fileName> k <Key> c <CreditKey> e|r|n\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(" k <Key> : *Debit Key (AA1) as 16 hex symbols (8 bytes) or 1 hex to select key from memory"); + PrintAndLog(" c <CreditKey>: Credit Key (AA2) as 16 hex symbols (8 bytes) or 1 hex to select key from memory"); + PrintAndLog(" e : If 'e' is specified, the keys are interpreted as Elite"); + PrintAndLog(" Custom Keys (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(" r : If 'r' is specified, keys are interpreted as raw blocks 3/4"); + PrintAndLog(" n : If 'n' is specified, keys are interpreted as NR/MAC pairs which can be obtained by 'hf iclass snoop'"); PrintAndLog(" NOTE: * = required"); - PrintAndLog("Samples:"); + 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 CmdHFiClassReader_Dump(const char *Cmd) { + +static 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"); +} + + +static 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 AA1_maxBlk = 0; uint8_t maxBlk = 31; uint8_t app_areas = 1; uint8_t kb = 2; @@ -607,92 +822,112 @@ int CmdHFiClassReader_Dump(const char *Cmd) { bool use_credit_key = false; bool elite = false; bool rawkey = false; + bool NRMAC_replay = false; bool errors = false; + bool verbose = false; uint8_t cmdp = 0; - while(param_getchar(Cmd, cmdp) != 0x00) - { - switch(param_getchar(Cmd, cmdp)) - { - 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); + while (param_getchar(Cmd, cmdp) != 0x00 && !errors) { + switch(param_getchar(Cmd, cmdp)) { + case 'h': + case 'H': + usage_hf_iclass_dump(); + return 0; + 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 KeyNbr is invalid\n"); + PrintAndLog("\nERROR: Credit Key is incorrect length\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); + 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: Debit KeyNbr is invalid\n"); + errors = true; + } } else { - PrintAndLog("\nERROR: Credit KeyNbr is invalid\n"); + PrintAndLog("\nERROR: Debit Key is incorrect length\n"); errors = true; } - } else { - PrintAndLog("\nERROR: Credit Key is incorrect length\n"); + cmdp += 2; + break; + case 'r': + case 'R': + rawkey = true; + cmdp++; + break; + case 'n': + case 'N': + NRMAC_replay = true; + cmdp++; + break; + case 'v': + case 'V': + verbose = true; + cmdp++; + break; + default: + PrintAndLog("Unknown parameter '%c'\n", param_getchar(Cmd, cmdp)); 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; + break; } - if(errors) return usage_hf_iclass_dump(); } - 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; + if (elite + rawkey + NRMAC_replay > 1) { + PrintAndLog("You cannot combine the 'e', 'r', and 'n' options\n"); + errors = true; + } + + if (errors || cmdp < 2) { + usage_hf_iclass_dump(); + return 0; + } - //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}}; + // if only credit key is given: try for AA1 as well (not for iclass but for some picopass this will work) + if (!have_debit_key && have_credit_key) { + memcpy(KEY, CreditKEY, 8); + } + + // clear trace and get first 3 blocks + UsbCommand c = {CMD_READER_ICLASS, {FLAG_ICLASS_READER_INIT | FLAG_ICLASS_READER_CLEARTRACE | FLAG_ICLASS_READER_CSN | FLAG_ICLASS_READER_CONF | FLAG_ICLASS_READER_CC}}; UsbCommand resp; - uint8_t tag_data[255*8]; + uint8_t tag_data[256*8]; clearCommandBuffer(); SendCommand(&c); @@ -701,187 +936,191 @@ int CmdHFiClassReader_Dump(const char *Cmd) { DropField(); return 0; } + uint8_t readStatus = resp.arg[0] & 0xff; uint8_t *data = resp.d.asBytes; + uint8_t status_mask = FLAG_ICLASS_READER_CSN | FLAG_ICLASS_READER_CONF | FLAG_ICLASS_READER_CC; - if(readStatus == 0){ - PrintAndLog("No tag found..."); - DropField(); + if (readStatus != status_mask) { + PrintAndLog("No tag found ..."); return 0; - } - if( readStatus & (FLAG_ICLASS_READER_CSN|FLAG_ICLASS_READER_CONF|FLAG_ICLASS_READER_CC)){ + } else { memcpy(tag_data, data, 8*3); - blockno+=2; // 2 to force re-read of block 2 later. (seems to respond differently..) - numblks = data[8]; + if (verbose) PrintAndLog("CSN: %s", sprint_hex(tag_data, 8)); + AA1_maxBlk = data[8]; getMemConfig(data[13], data[12], &maxBlk, &app_areas, &kb); // large memory - not able to dump pages currently - if (numblks > maxBlk) numblks = maxBlk; + if (AA1_maxBlk > maxBlk) AA1_maxBlk = 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"); + + // authenticate with debit key (or credit key if we have no debit key) and get div_key - later store in dump block 3 + if (!iClass_authenticate(tag_data, KEY, MAC, div_key, false, elite, rawkey, NRMAC_replay, verbose)) { 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; + + // read AA1 + UsbCommand w = {CMD_ICLASS_DUMP}; + uint32_t blocksRead = 0; + for (blockno = 3; blockno <= AA1_maxBlk; blockno += blocksRead) { + w.arg[0] = blockno; + w.arg[1] = AA1_maxBlk - blockno + 1; + clearCommandBuffer(); + SendCommand(&w); + if (!WaitForResponseTimeout(CMD_ACK, &resp, 4500)) { + PrintAndLog("Command execute time-out 1"); + DropField(); + return 1; + } + blocksRead = resp.arg[1]; + bool isOK = resp.arg[0]; + if (!isOK) { + PrintAndLog("Reading AA1 block failed"); + DropField(); + return 0; + } + memcpy(tag_data + blockno*8, resp.d.asBytes, blocksRead*8); } - // response ok - now get bigbuf content of the dump - GetFromBigBuf(tag_data+(blockno*8), blocksRead*8, startindex, NULL, -1, false); - 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)){ + // do we still need to read more blocks (AA2 enabled)? + if (have_credit_key && maxBlk > AA1_maxBlk) { + if (!use_credit_key) { + //turn off hf field before authenticating with different key + DropField(); + // AA2 authenticate credit key and git c_div_key - later store in dump block 4 + uint8_t CSN[8]; + if (!iClass_select(CSN, verbose, false, true) || !iClass_authenticate(CSN, CreditKEY, MAC, c_div_key, true, false, false, NRMAC_replay, verbose)){ 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); + for ( ; blockno <= maxBlk; blockno += blocksRead) { + w.arg[0] = blockno; + w.arg[1] = maxBlk - blockno + 1; clearCommandBuffer(); SendCommand(&w); if (!WaitForResponseTimeout(CMD_ACK, &resp, 4500)) { - PrintAndLog("Command execute timeout 2"); + PrintAndLog("Command execute time-out 1"); DropField(); - return 0; + return 1; } - uint8_t isOK = resp.arg[0] & 0xff; blocksRead = resp.arg[1]; - if (!isOK && !blocksRead) { - PrintAndLog("Read Block Failed 2"); + bool isOK = resp.arg[0]; + if (!isOK) { + PrintAndLog("Reading AA2 block failed"); 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, NULL, -1, false); - - gotBytes += blocksRead*8; - } else { //field is still on - turn it off... - DropField(); + memcpy(tag_data + blockno*8, resp.d.asBytes, blocksRead*8); } } + 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); + if (have_debit_key) { + memcpy(tag_data + 3*8, div_key, 8); + } else { + memset(tag_data + 3*8, 0xff, 8); + } + if (have_credit_key) { + memcpy(tag_data + 4*8, c_div_key, 8); + } else { + memset(tag_data + 4*8, 0xff, 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){ + printIclassDumpContents(tag_data, 1, blockno-1, blockno*8); + + 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]); + 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); + PrintAndLog("Saving dump file - %d blocks read", blockno); + saveFile(filename, "bin", tag_data, blockno*8); 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)) + +static int WriteBlock(uint8_t blockno, uint8_t *bldata, uint8_t *KEY, bool use_credit_key, bool elite, bool rawkey, bool NRMAC_replay, bool verbose) { + + uint8_t MAC[4] = {0x00,0x00,0x00,0x00}; + uint8_t div_key[8] = {0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00}; + uint8_t CSN[8]; + + if (!iClass_select(CSN, verbose, true, true) || !iClass_authenticate(CSN, KEY, MAC, div_key, use_credit_key, elite, rawkey, NRMAC_replay, verbose)) { + DropField(); return 0; + } UsbCommand resp; - Calc_wb_mac(blockno,bldata,div_key,MAC); + 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)) - { + if (!WaitForResponseTimeout(CMD_ACK, &resp, 4500)) { PrintAndLog("Write Command execute timeout"); + DropField(); return 0; } - uint8_t isOK = resp.arg[0] & 0xff; + bool isOK = resp.arg[0]; if (!isOK) { PrintAndLog("Write Block Failed"); + DropField(); return 0; } + PrintAndLog("Write Block Successful"); return 1; } -int usage_hf_iclass_writeblock(void) { + +static void 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(" 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(" 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(" o : override protection and allow modification of blocks 0...4"); + 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; + PrintAndLog(" hf iclass writeblk b 03 d AAAAAAAAAAAAAAAA k 001122334455667B c o"); } -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}; + +static int CmdHFiClass_WriteBlock(const char *Cmd) { + uint8_t blockno = 0; + uint8_t bldata[8] = {0}; + uint8_t KEY[8] = {0}; uint8_t keyNbr = 0; uint8_t dataLen = 0; char tempStr[50] = {0}; bool use_credit_key = false; bool elite = false; - bool rawkey= false; + bool rawkey = false; + bool override_protection = false; bool errors = false; uint8_t cmdp = 0; - while(param_getchar(Cmd, cmdp) != 0x00) - { - switch(param_getchar(Cmd, cmdp)) - { + + while (param_getchar(Cmd, cmdp) != 0x00 && !errors) { + switch(param_getchar(Cmd, cmdp)) { case 'h': case 'H': - return usage_hf_iclass_writeblock(); + usage_hf_iclass_writeblock(); + return 0; case 'b': case 'B': if (param_gethex(Cmd, cmdp+1, &blockno, 2)) { @@ -897,9 +1136,8 @@ int CmdHFiClass_WriteBlock(const char *Cmd) { break; case 'd': case 'D': - if (param_gethex(Cmd, cmdp+1, bldata, 16)) - { - PrintAndLog("KEY must include 16 HEX symbols\n"); + if (param_gethex(Cmd, cmdp+1, bldata, 16)) { + PrintAndLog("Data must include 16 HEX symbols\n"); errors = true; } cmdp += 2; @@ -912,7 +1150,7 @@ int CmdHFiClass_WriteBlock(const char *Cmd) { case 'k': case 'K': dataLen = param_getstr(Cmd, cmdp+1, tempStr, sizeof(tempStr)); - if (dataLen == 16) { + if (dataLen == 16) { errors = param_gethex(tempStr, 0, KEY, dataLen); } else if (dataLen == 1) { keyNbr = param_get8(Cmd, cmdp+1); @@ -933,38 +1171,70 @@ int CmdHFiClass_WriteBlock(const char *Cmd) { rawkey = true; cmdp++; break; + case 'o': + case 'O': + override_protection = true; + cmdp++; + break; default: PrintAndLog("Unknown parameter '%c'\n", param_getchar(Cmd, cmdp)); errors = true; break; } - if(errors) return usage_hf_iclass_writeblock(); + if (errors) { + usage_hf_iclass_writeblock(); + return 0; + } + } + + if (elite && rawkey) { + PrintAndLog("You cannot combine the 'e' and 'r' options\n"); + errors = true; } - if (cmdp < 6) return usage_hf_iclass_writeblock(); - int ans = WriteBlock(blockno, bldata, KEY, use_credit_key, elite, rawkey, true); + if (cmdp < 6) { + usage_hf_iclass_writeblock(); + return 0; + } + + if (blockno < 5) { + if (override_protection) { + PrintAndLog("Info: modifying keys, e-purse or configuration block."); + } else { + PrintAndLog("You are going to modify keys, e-purse or configuration block."); + PrintAndLog("You must add the 'o' (override) option to confirm that you know what you are doing"); + return 0; + } + } + + int ans = WriteBlock(blockno, bldata, KEY, use_credit_key, elite, rawkey, false, 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"); + +static void usage_hf_iclass_clone(void) { + PrintAndLog("Usage: hf iclass clone f <tagfile.bin> b <first block> l <last block> k <KEY> c e|r o"); 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(" l <Last Blk>: The last block to clone 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(" o : override protection and allow modification of target blocks 0...4"); 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; + PrintAndLog(" hf iclass clone f iclass_tagdump-121345.bin b 06 l 19 k 0 e"); + PrintAndLog(" hf iclass clone f iclass_tagdump-121345.bin b 03 l 19 k 0 e o"); } -int CmdHFiClassCloneTag(const char *Cmd) { + +static 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}; @@ -976,15 +1246,16 @@ int CmdHFiClassCloneTag(const char *Cmd) { bool use_credit_key = false; bool elite = false; bool rawkey = false; + bool override_protection = false; bool errors = false; uint8_t cmdp = 0; - while(param_getchar(Cmd, cmdp) != 0x00) - { - switch(param_getchar(Cmd, cmdp)) - { + + while (param_getchar(Cmd, cmdp) != 0x00 && !errors) { + switch (param_getchar(Cmd, cmdp)) { case 'h': case 'H': - return usage_hf_iclass_clone(); + usage_hf_iclass_clone(); + return 0; case 'b': case 'B': if (param_gethex(Cmd, cmdp+1, &startblock, 2)) { @@ -1005,7 +1276,7 @@ int CmdHFiClassCloneTag(const char *Cmd) { break; case 'f': case 'F': - fileNameLen = param_getstr(Cmd, cmdp+1, filename, sizeof(filename)); + fileNameLen = param_getstr(Cmd, cmdp+1, filename, sizeof(filename)); if (fileNameLen < 1) { PrintAndLog("No filename found after f"); errors = true; @@ -1015,7 +1286,7 @@ int CmdHFiClassCloneTag(const char *Cmd) { case 'k': case 'K': dataLen = param_getstr(Cmd, cmdp+1, tempStr, sizeof(tempStr)); - if (dataLen == 16) { + if (dataLen == 16) { errors = param_gethex(tempStr, 0, KEY, dataLen); } else if (dataLen == 1) { keyNbr = param_get8(Cmd, cmdp+1); @@ -1034,7 +1305,7 @@ int CmdHFiClassCloneTag(const char *Cmd) { case 'l': case 'L': if (param_gethex(Cmd, cmdp+1, &endblock, 2)) { - PrintAndLog("Start Block No must include 2 HEX symbols\n"); + PrintAndLog("Last Block No must include 2 HEX symbols\n"); errors = true; } cmdp += 2; @@ -1044,132 +1315,157 @@ int CmdHFiClassCloneTag(const char *Cmd) { rawkey = true; cmdp++; break; + case 'o': + case 'O': + override_protection = true; + cmdp++; + break; default: PrintAndLog("Unknown parameter '%c'\n", param_getchar(Cmd, cmdp)); errors = true; break; } - if(errors) return usage_hf_iclass_clone(); + if (errors) { + usage_hf_iclass_clone(); + return 0; + } } - if (cmdp < 8) return usage_hf_iclass_clone(); - - FILE *f; - - iclass_block_t tag_data[USB_CMD_DATA_SIZE/12]; + if (cmdp < 8) { + usage_hf_iclass_clone(); + return 0; + } - 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); + if (startblock < 5) { + if (override_protection) { + PrintAndLog("Info: modifying keys, e-purse or configuration block."); + } else { + PrintAndLog("You are going to modify keys, e-purse or configuration block."); + PrintAndLog("You must add the 'o' (override) option to confirm that you know what you are doing"); + return 0; + } + } + + if ((endblock - startblock + 1) * 12 > USB_CMD_DATA_SIZE) { + PrintAndLog("Trying to write too many blocks at once. Max: %d", USB_CMD_DATA_SIZE/12); } + // file handling and reading + FILE *f; f = fopen(filename,"rb"); - if(!f) { + 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 tag_data[USB_CMD_DATA_SIZE/12][8]; + fseek(f, startblock*8, SEEK_SET); + for (int i = 0; i < endblock - startblock + 1; i++) { + if (fread(&tag_data[i], 1, 8, 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}; + uint8_t MAC[4] = {0x00, 0x00, 0x00, 0x00}; + uint8_t div_key[8] = {0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00}; + uint8_t CSN[8]; - if (!select_and_auth(KEY, MAC, div_key, use_credit_key, elite, rawkey, true)) + if (!iClass_select(CSN, true, true, true) || !iClass_authenticate(CSN, KEY, MAC, div_key, use_credit_key, elite, rawkey, false, true)) { + DropField(); return 0; + } - UsbCommand w = {CMD_ICLASS_CLONE,{startblock,endblock}}; + 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); + // calculate MAC for every block we will write + for (int i = 0; i < endblock - startblock + 1; i++) { + Calc_wb_mac(startblock + i, tag_data[i], div_key, MAC); + ptr = w.d.asBytes + i * 12; + memcpy(ptr, tag_data[i], 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]); + PrintAndLog("Cloning"); + for (int i = 0; i < endblock - startblock + 1; i++){ + memcpy(p, w.d.asBytes + (i * 12), 12); + PrintAndLog("Block |%02x| %02x%02x%02x%02x%02x%02x%02x%02x | MAC |%02x%02x%02x%02x|", + i + startblock, p[0], p[1], p[2], p[3], p[4], p[5], p[6], p[7], p[8], p[9], p[10], p[11]); } + UsbCommand resp; SendCommand(&w); - if (!WaitForResponseTimeout(CMD_ACK,&resp,4500)) - { + if (!WaitForResponseTimeout(CMD_ACK, &resp, 4500)) { PrintAndLog("Command execute timeout"); + DropField(); return 0; } + + DropField(); return 1; } -static int ReadBlock(uint8_t *KEY, uint8_t blockno, uint8_t keyType, bool elite, bool rawkey, bool verbose, bool auth) { + +static int ReadBlock(uint8_t *KEY, uint8_t blockno, uint8_t keyType, bool elite, bool rawkey, bool NRMAC_replay, 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}; + uint8_t CSN[8]; + + if (!iClass_select(CSN, verbose, true, true)) { + DropField(); + return 0; + } 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)) + if (!iClass_authenticate(CSN, KEY, MAC, div_key, (keyType==0x18), elite, rawkey, NRMAC_replay, verbose)) { + DropField(); return 0; + } } UsbCommand resp; UsbCommand w = {CMD_ICLASS_READBLOCK, {blockno}}; clearCommandBuffer(); SendCommand(&w); - if (!WaitForResponseTimeout(CMD_ACK,&resp,4500)) - { + if (!WaitForResponseTimeout(CMD_ACK, &resp, 4500)) { PrintAndLog("Command execute timeout"); + DropField(); return 0; } - uint8_t isOK = resp.arg[0] & 0xff; + bool isOK = resp.arg[0]; if (!isOK) { PrintAndLog("Read Block Failed"); + DropField(); 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)); + 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"); + +static void usage_hf_iclass_readblock(void) { + PrintAndLog("Usage: hf iclass readblk b <Block> k <Key> [c] [e|r|n]\n"); PrintAndLog("Options:"); - PrintAndLog(" b <Block> : The block number as 2 hex symbols"); + 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(" 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(" n : If 'n' is specified, <Key> specifies a NR/MAC pair which can be obtained by 'hf iclass snoop'"); + 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) { + +static 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}; @@ -1178,74 +1474,94 @@ int CmdHFiClass_ReadBlock(const char *Cmd) { char tempStr[50] = {0}; bool elite = false; bool rawkey = false; + bool NRMAC_replay = 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); + + while (param_getchar(Cmd, cmdp) != 0x00 && !errors) { + switch (param_getchar(Cmd, cmdp)) { + case 'h': + case 'H': + usage_hf_iclass_readblock(); + return 0; + 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: KeyNbr is invalid\n"); + errors = true; + } } else { - PrintAndLog("\nERROR: Credit KeyNbr is invalid\n"); + PrintAndLog("\nERROR: Key is incorrect length\n"); errors = true; } - } else { - PrintAndLog("\nERROR: Credit Key is incorrect length\n"); + cmdp += 2; + break; + case 'r': + case 'R': + rawkey = true; + cmdp++; + break; + case 'n': + case 'N': + NRMAC_replay = true; + cmdp++; + break; + default: + PrintAndLog("Unknown parameter '%c'\n", param_getchar(Cmd, cmdp)); 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; + break; } - if(errors) return usage_hf_iclass_readblock(); } - if (cmdp < 2) return usage_hf_iclass_readblock(); + if (elite + rawkey + NRMAC_replay > 1) { + PrintAndLog("You cannot combine the 'e', 'r', and 'n' options\n"); + errors = true; + } + + if (errors) { + usage_hf_iclass_readblock(); + return 0; + } + + if (cmdp < 2) { + usage_hf_iclass_readblock(); + return 0; + } 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); + + return ReadBlock(KEY, blockno, keyType, elite, rawkey, NRMAC_replay, true, auth); } -int CmdHFiClass_loclass(const char *Cmd) { + +static int CmdHFiClass_loclass(const char *Cmd) { char opt = param_getchar(Cmd, 0); if (strlen(Cmd)<1 || opt == 'h') { @@ -1264,24 +1580,18 @@ int CmdHFiClass_loclass(const char *Cmd) { return 0; } char fileName[255] = {0}; - if(opt == 'f') - { - if(param_getstr(Cmd, 1, fileName, sizeof(fileName)) > 0) - { + if(opt == 'f') { + if(param_getstr(Cmd, 1, fileName, sizeof(fileName)) > 0) { return bruteforceFileNoKeys(fileName); - }else - { + } else { PrintAndLog("You must specify a filename"); } - } - else if(opt == 't') - { + } else if(opt == 't') { int errors = testCipherUtils(); errors += testMAC(); errors += doKeyTests(0); errors += testElite(); - if(errors) - { + if(errors) { prnlog("OBS! There were errors!!!"); } return errors; @@ -1290,49 +1600,22 @@ 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() { +static void usage_hf_iclass_readtagfile() { PrintAndLog("Usage: hf iclass readtagfile <filename> [startblock] [endblock]"); - return 1; } -int CmdHFiClassReadTagFile(const char *Cmd) { + +static 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, 0, filename, sizeof(filename)) < 1) { + usage_hf_iclass_readtagfile(); + return 0; + } if (param_getstr(Cmd, 1, tempnum, sizeof(tempnum)) < 1) startblock = 0; else @@ -1390,24 +1673,7 @@ uint64_t hexarray_to_uint64(uint8_t *key) { 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) @@ -1419,18 +1685,19 @@ static void HFiClassCalcNewKey(uint8_t *CSN, uint8_t *OLDKEY, uint8_t *NEWKEY, u 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)); + printf("Xor Div Key : %s\n",sprint_hex(xor_div_key,8)); } } -int usage_hf_iclass_calc_newkey(void) { + +static void 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:"); @@ -1444,16 +1711,14 @@ int usage_hf_iclass_calc_newkey(void) { 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) { + +static 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}; @@ -1462,13 +1727,13 @@ int CmdHFiClassCalcNewKey(const char *Cmd) { bool elite = false; bool errors = false; uint8_t cmdp = 0; - while(param_getchar(Cmd, cmdp) != 0x00) - { - switch(param_getchar(Cmd, cmdp)) - { + + while (param_getchar(Cmd, cmdp) != 0x00 && !errors) { + switch(param_getchar(Cmd, cmdp)) { case 'h': case 'H': - return usage_hf_iclass_calc_newkey(); + usage_hf_iclass_calc_newkey(); + return 0; case 'e': case 'E': dataLen = param_getstr(Cmd, cmdp, tempStr, sizeof(tempStr)); @@ -1480,7 +1745,7 @@ int CmdHFiClassCalcNewKey(const char *Cmd) { case 'n': case 'N': dataLen = param_getstr(Cmd, cmdp+1, tempStr, sizeof(tempStr)); - if (dataLen == 16) { + if (dataLen == 16) { errors = param_gethex(tempStr, 0, NEWKEY, dataLen); } else if (dataLen == 1) { keyNbr = param_get8(Cmd, cmdp+1); @@ -1499,7 +1764,7 @@ int CmdHFiClassCalcNewKey(const char *Cmd) { case 'o': case 'O': dataLen = param_getstr(Cmd, cmdp+1, tempStr, sizeof(tempStr)); - if (dataLen == 16) { + if (dataLen == 16) { errors = param_gethex(tempStr, 0, OLDKEY, dataLen); } else if (dataLen == 1) { keyNbr = param_get8(Cmd, cmdp+1); @@ -1518,8 +1783,10 @@ int CmdHFiClassCalcNewKey(const char *Cmd) { case 's': case 'S': givenCSN = true; - if (param_gethex(Cmd, cmdp+1, CSN, 16)) - return usage_hf_iclass_calc_newkey(); + if (param_gethex(Cmd, cmdp+1, CSN, 16)) { + usage_hf_iclass_calc_newkey(); + return 0; + } cmdp += 2; break; default: @@ -1527,19 +1794,29 @@ int CmdHFiClassCalcNewKey(const char *Cmd) { errors = true; break; } - if(errors) return usage_hf_iclass_calc_newkey(); + if (errors) { + usage_hf_iclass_calc_newkey(); + return 0; + } } - if (cmdp < 4) return usage_hf_iclass_calc_newkey(); + if (cmdp < 4) { + usage_hf_iclass_calc_newkey(); + return 0; + } if (!givenCSN) - if (!select_only(CSN, CCNR, false, true)) + if (!iClass_select(CSN, true, true, true)) { + DropField(); return 0; - + } + DropField(); + HFiClassCalcNewKey(CSN, OLDKEY, NEWKEY, xor_div_key, elite, oldElite, true); return 0; } + static int loadKeys(char *filename) { FILE *f; f = fopen(filename,"rb"); @@ -1575,6 +1852,7 @@ static int loadKeys(char *filename) { return 1; } + static int saveKeys(char *filename) { FILE *f; f = fopen(filename,"wb"); @@ -1592,16 +1870,18 @@ static int saveKeys(char *filename) { 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(""); + PrintAndLog(""); return 0; } -int usage_hf_iclass_managekeys(void) { + +static void 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:"); @@ -1616,10 +1896,10 @@ int usage_hf_iclass_managekeys(void) { 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) { + +static int CmdHFiClassManageKeys(const char *Cmd) { uint8_t keyNbr = 0; uint8_t dataLen = 0; uint8_t KEY[8] = {0}; @@ -1630,16 +1910,15 @@ int CmdHFiClassManageKeys(const char *Cmd) { char tempStr[20]; uint8_t cmdp = 0; - while(param_getchar(Cmd, cmdp) != 0x00) - { - switch(param_getchar(Cmd, cmdp)) - { + while(param_getchar(Cmd, cmdp) != 0x00) { + switch(param_getchar(Cmd, cmdp)) { case 'h': case 'H': - return usage_hf_iclass_managekeys(); + usage_hf_iclass_managekeys(); + return 0; case 'f': case 'F': - fileNameLen = param_getstr(Cmd, cmdp+1, filename, sizeof(filename)); + fileNameLen = param_getstr(Cmd, cmdp+1, filename, sizeof(filename)); if (fileNameLen < 1) { PrintAndLog("No filename found after f"); errors = true; @@ -1657,7 +1936,7 @@ int CmdHFiClassManageKeys(const char *Cmd) { break; case 'k': case 'K': - operation += 3; //set key + 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); @@ -1687,19 +1966,27 @@ int CmdHFiClassManageKeys(const char *Cmd) { errors = true; break; } - if(errors) return usage_hf_iclass_managekeys(); + if (errors) { + usage_hf_iclass_managekeys(); + return 0; + } } + if (operation == 0){ PrintAndLog("no operation specified (load, save, or print)\n"); - return usage_hf_iclass_managekeys(); + usage_hf_iclass_managekeys(); + return 0; } + if (operation > 6){ PrintAndLog("Too many operations specified\n"); - return usage_hf_iclass_managekeys(); + usage_hf_iclass_managekeys(); + return 0; } if (operation > 4 && fileNameLen == 0){ PrintAndLog("You must enter a filename when loading or saving\n"); - return usage_hf_iclass_managekeys(); + usage_hf_iclass_managekeys(); + return 0; } switch (operation){ @@ -1712,7 +1999,8 @@ int CmdHFiClassManageKeys(const char *Cmd) { return 0; } -int CmdHFiClassCheckKeys(const char *Cmd) { + +static int CmdHFiClassCheckKeys(const char *Cmd) { uint8_t mac[4] = {0x00,0x00,0x00,0x00}; uint8_t key[8] = {0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00}; @@ -1720,26 +2008,27 @@ int CmdHFiClassCheckKeys(const char *Cmd) { // elite key, raw key, standard key bool use_elite = false; - bool use_raw = false; + bool use_raw = false; bool found_debit = false; - bool found_credit = false; + bool found_credit = false; bool errors = false; uint8_t cmdp = 0x00; - FILE * f; + FILE *f; char filename[FILE_PATH_SIZE] = {0}; uint8_t fileNameLen = 0; char buf[17]; uint8_t *keyBlock = NULL, *p; - int keyitems = 0, keycnt = 0; + int keycnt = 0; while (param_getchar(Cmd, cmdp) != 0x00 && !errors) { switch (param_getchar(Cmd, cmdp)) { case 'h': case 'H': - return usage_hf_iclass_chk(); + usage_hf_iclass_chk(); + return 0; case 'f': case 'F': - fileNameLen = param_getstr(Cmd, cmdp+1, filename, sizeof(filename)); + fileNameLen = param_getstr(Cmd, cmdp+1, filename, sizeof(filename)); if (fileNameLen < 1) { PrintAndLog("No filename found after f"); errors = true; @@ -1762,29 +2051,33 @@ int CmdHFiClassCheckKeys(const char *Cmd) { break; } } - if (errors) return usage_hf_iclass_chk(); - - if ( !(f = fopen( filename , "r")) ) { - PrintAndLog("File: %s: not found or locked.", filename); + + if (errors) { + usage_hf_iclass_chk(); + return 0; + } + + if (!(f = fopen(filename , "r"))) { + PrintAndLog("File %s not found or locked.", filename); return 1; } - while( fgets(buf, sizeof(buf), f) ){ + while (fgets(buf, sizeof(buf), f)) { if (strlen(buf) < 16 || buf[15] == '\n') continue; - + while (fgetc(f) != '\n' && !feof(f)) ; //goto next line - - if( buf[0]=='#' ) continue; //The line start with # is comment, skip + + if (buf[0] == '#') continue; //The line start with # is comment, skip if (!isxdigit(buf[0])){ - PrintAndLog("File content error. '%s' must include 16 HEX symbols",buf); + PrintAndLog("File content error. '%s' must include 16 HEX symbols", buf); continue; } - + buf[16] = 0; - p = realloc(keyBlock, 8 * (keyitems += 64)); + p = realloc(keyBlock, 8 * (keycnt + 1)); if (!p) { PrintAndLog("Cannot allocate memory for default keys"); free(keyBlock); @@ -1796,95 +2089,139 @@ int CmdHFiClassCheckKeys(const char *Cmd) { memset(keyBlock + 8 * keycnt, 0, 8); num_to_bytes(strtoull(buf, NULL, 16), 8, keyBlock + 8 * keycnt); - //PrintAndLog("check key[%2d] %016" PRIx64, keycnt, bytes_to_num(keyBlock + 8*keycnt, 8)); keycnt++; memset(buf, 0, sizeof(buf)); } fclose(f); PrintAndLog("Loaded %2d keys from %s", keycnt, filename); - - // time - uint64_t t1 = msclock(); - - for (uint32_t c = 0; c < keycnt; c += 1) { - printf("."); fflush(stdout); - if (ukbhit()) { - int gc = getchar(); (void)gc; - printf("\naborted via keyboard!\n"); - break; - } - - memcpy(key, keyBlock + 8 * c , 8); - - // debit key. try twice - for (int foo = 0; foo < 2 && !found_debit; foo++) { - if (!select_and_auth(key, mac, div_key, false, use_elite, use_raw, false)) - continue; - - // key found. - PrintAndLog("\n--------------------------------------------------------"); - PrintAndLog(" Found AA1 debit key\t\t[%s]", sprint_hex(key, 8)); - found_debit = true; - } - - // credit key. try twice - for (int foo = 0; foo < 2 && !found_credit; foo++) { - if (!select_and_auth(key, mac, div_key, true, use_elite, use_raw, false)) - continue; - - // key found - PrintAndLog("\n--------------------------------------------------------"); - PrintAndLog(" Found AA2 credit key\t\t[%s]", sprint_hex(key, 8)); - found_credit = true; - } - - // both keys found. - if ( found_debit && found_credit ) - break; + + uint8_t CSN[8]; + if (!iClass_select(CSN, false, true, true)) { + DropField(); + return 0; } - t1 = msclock() - t1; + for (uint32_t c = 0; c < keycnt; c++) { + + memcpy(key, keyBlock + 8 * c, 8); + + // debit key + if (iClass_authenticate(CSN, key, mac, div_key, false, use_elite, use_raw, false, false)) { + PrintAndLog("\n Found AA1 debit key\t\t[%s]", sprint_hex(key, 8)); + found_debit = true; + } + + // credit key + if (iClass_authenticate(CSN, key, mac, div_key, true, use_elite, use_raw, false, false)) { + PrintAndLog("\n Found AA2 credit key\t\t[%s]", sprint_hex(key, 8)); + found_credit = true; + } + + // both keys found. + if (found_debit && found_credit) + break; + } - PrintAndLog("\nTime in iclass checkkeys: %.0f seconds\n", (float)t1/1000.0); - DropField(); free(keyBlock); PrintAndLog(""); return 0; } -static command_t CommandTable[] = -{ - {"help", CmdHelp, 1, "This help"}, - {"calcnewkey", CmdHFiClassCalcNewKey, 1, "[options..] Calc Diversified keys (blocks 3 & 4) to write new keys"}, - {"chk", CmdHFiClassCheckKeys, 0, " Check 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"}, + +static void usage_hf_iclass_permutekey(void) { + PrintAndLogEx(NORMAL, "Convert keys from standard NIST to iClass format (and vice versa)"); + PrintAndLogEx(NORMAL, ""); + PrintAndLogEx(NORMAL, "Usage: hf iclass permute [h] [r] <key>"); + PrintAndLogEx(NORMAL, "Options:"); + PrintAndLogEx(NORMAL, " h This help"); + PrintAndLogEx(NORMAL, " r reverse convert key from iClass to NIST format"); + PrintAndLogEx(NORMAL, ""); + PrintAndLogEx(NORMAL, "Examples:"); + PrintAndLogEx(NORMAL, " hf iclass permute r 0123456789abcdef"); +} + + +static int CmdHFiClassPermuteKey(const char *Cmd) { + + uint8_t key[8] = {0}; + uint8_t data[16] = {0}; + bool isReverse = false; + int len = sizeof(data); + char cmdp = tolower(param_getchar(Cmd, 0)); + if (strlen(Cmd) == 0 || cmdp == 'h') { + usage_hf_iclass_permutekey(); + return 0; + } + + if (cmdp == 'r') { + isReverse = true; + param_gethex_ex(Cmd, 1, data, &len); + } else if (cmdp == 'f') { + param_gethex_ex(Cmd, 1, data, &len); + } else { + param_gethex_ex(Cmd, 0, data, &len); + } + + + if (len % 2) { + usage_hf_iclass_permutekey(); + return 0; + } + + len >>= 1; + + memcpy(key, data, 8); + + if (isReverse) { + // generate_rev(data, len); + uint8_t key_std_format[8] = {0}; + permutekey_rev(key, key_std_format); + PrintAndLogEx(SUCCESS, "key in standard NIST format: %s \n", sprint_hex(key_std_format, 8)); + // if (mbedtls_des_key_check_key_parity(key_std_format + } else { + // generate(data, len); + uint8_t key_iclass_format[8] = {0}; + permutekey(key, key_iclass_format); + PrintAndLogEx(SUCCESS, "key in iClass (permuted) format: %s \n", sprint_hex(key_iclass_format, 8)); + } + return 0; +} + + +static int CmdHelp(const char *Cmd); + +static command_t CommandTable[] = { + {"help", CmdHelp, 1, "This help"}, + {"calcnewkey", CmdHFiClassCalcNewKey, 1, "[options..] Calc Diversified keys (blocks 3 & 4) to write new keys"}, + {"chk", CmdHFiClassCheckKeys, 0, " Check 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 and/or AA2"}, + {"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"}, + {"permutekey", CmdHFiClassPermuteKey, 1, " iClass key permutation"}, + {"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"}, + {"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} }; -int CmdHFiClass(const char *Cmd) -{ - clearCommandBuffer(); + +int CmdHFiClass(const char *Cmd) { + clearCommandBuffer(); CmdsParse(CommandTable, Cmd); return 0; } -int CmdHelp(const char *Cmd) -{ + +int CmdHelp(const char *Cmd) { CmdsHelp(CommandTable); return 0; }