From: Iceman Date: Fri, 15 Dec 2017 14:53:58 +0000 (+0100) Subject: Update cmdhficlass.c X-Git-Tag: v3.1.0~106^2 X-Git-Url: https://git.zerfleddert.de/cgi-bin/gitweb.cgi/proxmark3-svn/commitdiff_plain/refs/pull/523/head Update cmdhficlass.c ADD: 'hf iclass chk' - new command to check for keys from a dictionary file. hf iclass chk h hf iclass chk f default_iclass_keys.dic --- diff --git a/client/cmdhficlass.c b/client/cmdhficlass.c index 60713a01..37cf4dee 100644 --- a/client/cmdhficlass.c +++ b/client/cmdhficlass.c @@ -14,6 +14,7 @@ #include #include #include +#include #include "iso14443crc.h" // Can also be used for iClass, using 0xE012 as CRC-type #include "data.h" #include "proxmark3.h" @@ -32,6 +33,7 @@ #include "protocols.h" #include "usb_cmd.h" #include "cmdhfmfu.h" +#include "util_posix.h" static int CmdHelp(const char *Cmd); @@ -51,6 +53,14 @@ typedef struct iclass_block { uint8_t d[8]; } iclass_block_t; +int usage_hf_iclass_chk(void) { + PrintAndLog("Usage: hf iclass chk [h] "); + PrintAndLog("Options:"); + PrintAndLog("h Show this help"); + PrintAndLog("f Dictionary file with default iclass keys"); + return 0; +} + int xorbits_8(uint8_t val) { uint8_t res = val ^ (val >> 1); //1st pass res = res ^ (res >> 1); // 2nd pass @@ -531,7 +541,7 @@ static bool select_and_auth(uint8_t *KEY, uint8_t *MAC, uint8_t *div_key, bool u 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 (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); UsbCommand resp; @@ -541,12 +551,12 @@ static bool select_and_auth(uint8_t *KEY, uint8_t *MAC, uint8_t *div_key, bool u SendCommand(&d); if (!WaitForResponseTimeout(CMD_ACK,&resp,4500)) { - PrintAndLog("Auth Command execute timeout"); + if (verbose) PrintAndLog("Auth Command execute timeout"); return false; } uint8_t isOK = resp.arg[0] & 0xff; if (!isOK) { - PrintAndLog("Authentication error"); + if (verbose) PrintAndLog("Authentication error"); return false; } return true; @@ -1699,10 +1709,131 @@ int CmdHFiClassManageKeys(const char *Cmd) { return 0; } +int CmdHFiClassCheckKeys(const char *Cmd) { + + char ctmp = 0x00; + ctmp = param_getchar(Cmd, 0); + if (ctmp == 'h' || ctmp == 'H') return usage_hf_iclass_chk(); + + uint8_t mac[4] = {0x00,0x00,0x00,0x00}; + uint8_t key[8] = {0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00}; + uint8_t div_key[8] = {0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00}; + + // elite key, raw key, standard key + bool elite = false; + bool rawkey = false; + bool found_debit = false; + bool found_credit = false; + + FILE * f; + char filename[FILE_PATH_SIZE] = {0}; + char buf[17]; + uint8_t *keyBlock = NULL, *p; + int keyitems = 0, keycnt = 0; + + + // May be a dictionary file + if ( param_getstr(Cmd, 1, filename, sizeof(filename)) >= FILE_PATH_SIZE ) { + PrintAndLog("File name too long"); + free(keyBlock); + return 2; + } + + if ( !(f = fopen( filename , "r")) ) { + PrintAndLog("File: %s: not found or locked.", filename); + free(keyBlock); + return 1; + } + + 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 (!isxdigit(buf[0])){ + PrintAndLog("File content error. '%s' must include 16 HEX symbols",buf); + continue; + } + + buf[16] = 0; + + p = realloc(keyBlock, 8 * (keyitems += 64)); + if (!p) { + PrintAndLog("Cannot allocate memory for default keys"); + free(keyBlock); + fclose(f); + return 2; + } + keyBlock = p; + + 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, elite, rawkey, 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, elite, rawkey, 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; + } + + t1 = msclock() - t1; + + 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 ] Decrypt tagdump" }, {"dump", CmdHFiClassReader_Dump, 0, "[options..] Authenticate and Dump iClass tag's AA1"}, @@ -1723,6 +1854,7 @@ static command_t CommandTable[] = int CmdHFiClass(const char *Cmd) { + clearCommandBuffer(); CmdsParse(CommandTable, Cmd); return 0; }