X-Git-Url: http://cvs.zerfleddert.de/cgi-bin/gitweb.cgi/proxmark3-svn/blobdiff_plain/6a1f2d82bb7d33cd49f9c191f36144ca10d5b629..6143f8ccf131ca8f97146fc8fabed575b6a57896:/client/mifarehost.c diff --git a/client/mifarehost.c b/client/mifarehost.c index 378fb2e5..5e0f4760 100644 --- a/client/mifarehost.c +++ b/client/mifarehost.c @@ -12,10 +12,43 @@ #include #include #include -#include "mifarehost.h" + +#include "nonce2key/crapto1.h" #include "proxmark3.h" +#include "usb_cmd.h" +#include "cmdmain.h" +#include "ui.h" +#include "util.h" +#include "iso14443crc.h" +#include "mifarehost.h" + +// mifare tracer flags used in mfTraceDecode() +#define TRACE_IDLE 0x00 +#define TRACE_AUTH1 0x01 +#define TRACE_AUTH2 0x02 +#define TRACE_AUTH_OK 0x03 +#define TRACE_READ_DATA 0x04 +#define TRACE_WRITE_OK 0x05 +#define TRACE_WRITE_DATA 0x06 +#define TRACE_ERROR 0xFF + // MIFARE +int mfCheckKeys (uint8_t blockNo, uint8_t keyType, bool clear_trace, uint8_t keycnt, uint8_t * keyBlock, uint64_t * key){ + + *key = 0; + + UsbCommand c = {CMD_MIFARE_CHKKEYS, {((blockNo & 0xff) | ((keyType&0xff)<<8)), clear_trace, keycnt}}; + memcpy(c.d.asBytes, keyBlock, 6 * keycnt); + SendCommand(&c); + + UsbCommand resp; + if (!WaitForResponseTimeout(CMD_ACK,&resp,3000)) return 1; + if ((resp.arg[0] & 0xff) != 0x01) return 2; + *key = bytes_to_num(resp.d.asBytes, 6); + return 0; +} + int compar_int(const void * a, const void * b) { // didn't work: (the result is truncated to 32 bits) //return (*(uint64_t*)b - *(uint64_t*)a); @@ -26,8 +59,6 @@ int compar_int(const void * a, const void * b) { else return -1; } - - // Compare 16 Bits out of cryptostate int Compare16Bits(const void * a, const void * b) { if ((*(uint64_t*)b & 0x00ff000000ff0000) == (*(uint64_t*)a & 0x00ff000000ff0000)) return 0; @@ -35,7 +66,6 @@ int Compare16Bits(const void * a, const void * b) { else return -1; } - typedef struct { union { @@ -70,45 +100,39 @@ void* nested_worker_thread(void *arg) return statelist->head.slhead; } - - - int mfnested(uint8_t blockNo, uint8_t keyType, uint8_t * key, uint8_t trgBlockNo, uint8_t trgKeyType, uint8_t * resultKey, bool calibrate) { - uint16_t i, len; + uint16_t i; uint32_t uid; UsbCommand resp; - StateList_t statelists[2]; struct Crypto1State *p1, *p2, *p3, *p4; // flush queue - WaitForResponseTimeout(CMD_ACK,NULL,100); + WaitForResponseTimeout(CMD_ACK, NULL, 100); UsbCommand c = {CMD_MIFARE_NESTED, {blockNo + keyType * 0x100, trgBlockNo + trgKeyType * 0x100, calibrate}}; memcpy(c.d.asBytes, key, 6); SendCommand(&c); - if (WaitForResponseTimeout(CMD_ACK,&resp,1500)) { - len = resp.arg[1]; - if (len == 2) { - memcpy(&uid, resp.d.asBytes, 4); - PrintAndLog("uid:%08x len=%d trgbl=%d trgkey=%x", uid, len, (uint16_t)resp.arg[2] & 0xff, (uint16_t)resp.arg[2] >> 8); - - for (i = 0; i < 2; i++) { - statelists[i].blockNo = resp.arg[2] & 0xff; - statelists[i].keyType = (resp.arg[2] >> 8) & 0xff; - statelists[i].uid = uid; + if (!WaitForResponseTimeout(CMD_ACK, &resp, 1500)) { + return -1; + } - memcpy(&statelists[i].nt, (void *)(resp.d.asBytes + 4 + i * 8 + 0), 4); - memcpy(&statelists[i].ks1, (void *)(resp.d.asBytes + 4 + i * 8 + 4), 4); - } - } - else { - PrintAndLog("Got 0 keys from proxmark."); - return 1; - } + if (resp.arg[0]) { + return resp.arg[0]; // error during nested + } + + memcpy(&uid, resp.d.asBytes, 4); + PrintAndLog("uid:%08x trgbl=%d trgkey=%x", uid, (uint16_t)resp.arg[2] & 0xff, (uint16_t)resp.arg[2] >> 8); + + for (i = 0; i < 2; i++) { + statelists[i].blockNo = resp.arg[2] & 0xff; + statelists[i].keyType = (resp.arg[2] >> 8) & 0xff; + statelists[i].uid = uid; + memcpy(&statelists[i].nt, (void *)(resp.d.asBytes + 4 + i * 8 + 0), 4); + memcpy(&statelists[i].ks1, (void *)(resp.d.asBytes + 4 + i * 8 + 4), 4); } // calc keys @@ -190,7 +214,7 @@ int mfnested(uint8_t blockNo, uint8_t keyType, uint8_t * key, uint8_t trgBlockNo crypto1_get_lfsr(statelists[0].head.slhead + i, &key64); num_to_bytes(key64, 6, keyBlock); key64 = 0; - if (!mfCheckKeys(statelists[0].blockNo, statelists[0].keyType, 1, keyBlock, &key64)) { + if (!mfCheckKeys(statelists[0].blockNo, statelists[0].keyType, false, 1, keyBlock, &key64)) { num_to_bytes(key64, 6, resultKey); break; } @@ -202,21 +226,6 @@ int mfnested(uint8_t blockNo, uint8_t keyType, uint8_t * key, uint8_t trgBlockNo return 0; } -int mfCheckKeys (uint8_t blockNo, uint8_t keyType, uint8_t keycnt, uint8_t * keyBlock, uint64_t * key){ - - *key = 0; - - UsbCommand c = {CMD_MIFARE_CHKKEYS, {blockNo, keyType, keycnt}}; - memcpy(c.d.asBytes, keyBlock, 6 * keycnt); - SendCommand(&c); - - UsbCommand resp; - if (!WaitForResponseTimeout(CMD_ACK,&resp,3000)) return 1; - if ((resp.arg[0] & 0xff) != 0x01) return 2; - *key = bytes_to_num(resp.d.asBytes, 6); - return 0; -} - // EMULATOR int mfEmlGetMem(uint8_t *data, int blockNum, int blocksCount) { @@ -238,30 +247,16 @@ int mfEmlSetMem(uint8_t *data, int blockNum, int blocksCount) { // "MAGIC" CARD -int mfCSetUID(uint8_t *uid, uint8_t *oldUID, bool wantWipe) { - uint8_t block0[16]; - memset(block0, 0, 16); - memcpy(block0, uid, 4); - block0[4] = block0[0]^block0[1]^block0[2]^block0[3]; // Mifare UID BCC - // mifare classic SAK(byte 5) and ATQA(byte 6 and 7) - block0[5] = 0x88; - block0[6] = 0x04; - block0[7] = 0x00; - - return mfCSetBlock(0, block0, oldUID, wantWipe, CSETBLOCK_SINGLE_OPER); -} - -int mfCSetBlock(uint8_t blockNo, uint8_t *data, uint8_t *uid, bool wantWipe, uint8_t params) { +int mfCGetBlock(uint8_t blockNo, uint8_t *data, uint8_t params) { uint8_t isOK = 0; - UsbCommand c = {CMD_MIFARE_EML_CSETBLOCK, {wantWipe, params & (0xFE | (uid == NULL ? 0:1)), blockNo}}; - memcpy(c.d.asBytes, data, 16); + UsbCommand c = {CMD_MIFARE_CGETBLOCK, {params, 0, blockNo}}; SendCommand(&c); UsbCommand resp; if (WaitForResponseTimeout(CMD_ACK,&resp,1500)) { isOK = resp.arg[0] & 0xff; - if (uid != NULL) memcpy(uid, resp.d.asBytes, 4); + memcpy(data, resp.d.asBytes, 16); if (!isOK) return 2; } else { PrintAndLog("Command execute timeout"); @@ -270,17 +265,20 @@ int mfCSetBlock(uint8_t blockNo, uint8_t *data, uint8_t *uid, bool wantWipe, uin return 0; } -int mfCGetBlock(uint8_t blockNo, uint8_t *data, uint8_t params) { - uint8_t isOK = 0; +int mfCSetBlock(uint8_t blockNo, uint8_t *data, uint8_t *uid, bool wantWipe, uint8_t params) { - UsbCommand c = {CMD_MIFARE_EML_CGETBLOCK, {params, 0, blockNo}}; + uint8_t isOK = 0; + UsbCommand c = {CMD_MIFARE_CSETBLOCK, {wantWipe, params & (0xFE | (uid == NULL ? 0:1)), blockNo}}; + memcpy(c.d.asBytes, data, 16); SendCommand(&c); UsbCommand resp; if (WaitForResponseTimeout(CMD_ACK,&resp,1500)) { isOK = resp.arg[0] & 0xff; - memcpy(data, resp.d.asBytes, 16); - if (!isOK) return 2; + if (uid != NULL) + memcpy(uid, resp.d.asBytes, 4); + if (!isOK) + return 2; } else { PrintAndLog("Command execute timeout"); return 1; @@ -288,15 +286,43 @@ int mfCGetBlock(uint8_t blockNo, uint8_t *data, uint8_t params) { return 0; } +int mfCSetUID(uint8_t *uid, uint8_t *atqa, uint8_t *sak, uint8_t *oldUID, bool wantWipe) { + uint8_t oldblock0[16] = {0x00}; + uint8_t block0[16] = {0x00}; + + int old = mfCGetBlock(0, oldblock0, CSETBLOCK_SINGLE_OPER); + if (old == 0) { + memcpy(block0, oldblock0, 16); + PrintAndLog("old block 0: %s", sprint_hex(block0,16)); + } else { + PrintAndLog("Couldn't get old data. Will write over the last bytes of Block 0."); + } + + // fill in the new values + // UID + memcpy(block0, uid, 4); + // Mifare UID BCC + block0[4] = block0[0]^block0[1]^block0[2]^block0[3]; + // mifare classic SAK(byte 5) and ATQA(byte 6 and 7, reversed) + if (sak!=NULL) + block0[5]=sak[0]; + if (atqa!=NULL) { + block0[6]=atqa[1]; + block0[7]=atqa[0]; + } + PrintAndLog("new block 0: %s", sprint_hex(block0,16)); + return mfCSetBlock(0, block0, oldUID, wantWipe, CSETBLOCK_SINGLE_OPER); +} + // SNIFFER // constants static uint8_t trailerAccessBytes[4] = {0x08, 0x77, 0x8F, 0x00}; // variables -char logHexFileName[200] = {0x00}; +char logHexFileName[FILE_PATH_SIZE] = {0x00}; static uint8_t traceCard[4096] = {0x00}; -static char traceFileName[200] = {0}; +static char traceFileName[FILE_PATH_SIZE] = {0x00}; static int traceState = TRACE_IDLE; static uint8_t traceCurBlock = 0; static uint8_t traceCurKey = 0; @@ -329,22 +355,44 @@ int isBlockTrailer(int blockN) { return ((blockN & 0x03) == 0x03); } +int saveTraceCard(void) { + FILE * f; + + if ((!strlen(traceFileName)) || (isTraceCardEmpty())) return 0; + + f = fopen(traceFileName, "w+"); + if ( !f ) return 1; + + for (int i = 0; i < 64; i++) { // blocks + for (int j = 0; j < 16; j++) // bytes + fprintf(f, "%02x", *(traceCard + i * 16 + j)); + fprintf(f,"\n"); + } + fclose(f); + return 0; +} + int loadTraceCard(uint8_t *tuid) { FILE * f; - char buf[64]; - uint8_t buf8[64]; + char buf[64] = {0x00}; + uint8_t buf8[64] = {0x00}; int i, blockNum; - if (!isTraceCardEmpty()) saveTraceCard(); + if (!isTraceCardEmpty()) + saveTraceCard(); + memset(traceCard, 0x00, 4096); memcpy(traceCard, tuid + 3, 4); + FillFileNameByUID(traceFileName, tuid, ".eml", 7); f = fopen(traceFileName, "r"); if (!f) return 1; blockNum = 0; + while(!feof(f)){ + memset(buf, 0, sizeof(buf)); if (fgets(buf, sizeof(buf), f) == NULL) { PrintAndLog("File reading error."); @@ -370,28 +418,16 @@ int loadTraceCard(uint8_t *tuid) { return 0; } -int saveTraceCard(void) { - FILE * f; - - if ((!strlen(traceFileName)) || (isTraceCardEmpty())) return 0; - - f = fopen(traceFileName, "w+"); - for (int i = 0; i < 64; i++) { // blocks - for (int j = 0; j < 16; j++) // bytes - fprintf(f, "%02x", *(traceCard + i * 16 + j)); - fprintf(f,"\n"); - } - fclose(f); - - return 0; -} - int mfTraceInit(uint8_t *tuid, uint8_t *atqa, uint8_t sak, bool wantSaveToEmlFile) { - if (traceCrypto1) crypto1_destroy(traceCrypto1); + if (traceCrypto1) + crypto1_destroy(traceCrypto1); + traceCrypto1 = NULL; - if (wantSaveToEmlFile) loadTraceCard(tuid); + if (wantSaveToEmlFile) + loadTraceCard(tuid); + traceCard[4] = traceCard[0] ^ traceCard[1] ^ traceCard[2] ^ traceCard[3]; traceCard[5] = sak; memcpy(&traceCard[6], atqa, 2); @@ -522,7 +558,6 @@ int mfTraceDecode(uint8_t *data_src, int len, bool wantSaveToEmlFile) { case TRACE_AUTH1: if (len == 4) { traceState = TRACE_AUTH2; - nt = bytes_to_num(data, 4); return 0; } else { @@ -558,6 +593,7 @@ int mfTraceDecode(uint8_t *data_src, int len, bool wantSaveToEmlFile) { lfsr_rollback_word(revstate, 0, 0); lfsr_rollback_word(revstate, nr_enc, 1); lfsr_rollback_word(revstate, uid ^ nt, 0); + crypto1_get_lfsr(revstate, &lfsr); printf("key> %x%x\n", (unsigned int)((lfsr & 0xFFFFFFFF00000000) >> 32), (unsigned int)(lfsr & 0xFFFFFFFF)); AddLogUint64(logHexFileName, "key> ", lfsr); @@ -601,3 +637,23 @@ int mfTraceDecode(uint8_t *data_src, int len, bool wantSaveToEmlFile) { return 0; } + +int tryDecryptWord(uint32_t nt, uint32_t ar_enc, uint32_t at_enc, uint8_t *data, int len){ + /* + uint32_t nt; // tag challenge + uint32_t ar_enc; // encrypted reader response + uint32_t at_enc; // encrypted tag response + */ + if (traceCrypto1) { + crypto1_destroy(traceCrypto1); + } + ks2 = ar_enc ^ prng_successor(nt, 64); + ks3 = at_enc ^ prng_successor(nt, 96); + traceCrypto1 = lfsr_recovery64(ks2, ks3); + + mf_crypto1_decrypt(traceCrypto1, data, len, 0); + + PrintAndLog("Decrypted data: [%s]", sprint_hex(data,len) ); + crypto1_destroy(traceCrypto1); + return 0; +}