X-Git-Url: https://git.zerfleddert.de/cgi-bin/gitweb.cgi/proxmark3-svn/blobdiff_plain/9492e0b0986a557afe1c85f08fd02a7fb979f536..4d2e4eea58a6a2411855f14590dc3582150baaea:/client/mifarehost.c diff --git a/client/mifarehost.c b/client/mifarehost.c index 03951e2d..d754b06b 100644 --- a/client/mifarehost.c +++ b/client/mifarehost.c @@ -15,6 +15,8 @@ #include "mifarehost.h" #include "proxmark3.h" +#define llx PRIx64 + // MIFARE int compar_int(const void * a, const void * b) { // didn't work: (the result is truncated to 32 bits) @@ -26,8 +28,6 @@ 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; @@ -35,17 +35,16 @@ int Compare16Bits(const void * a, const void * b) { else return -1; } - typedef struct { union { struct Crypto1State *slhead; uint64_t *keyhead; - }; + } head; union { struct Crypto1State *sltail; uint64_t *keytail; - }; + } tail; uint32_t len; uint32_t uid; uint32_t blockNo; @@ -61,25 +60,20 @@ void* nested_worker_thread(void *arg) struct Crypto1State *p1; StateList_t *statelist = arg; - statelist->slhead = lfsr_recovery32(statelist->ks1, statelist->nt ^ statelist->uid); - for (p1 = statelist->slhead; *(uint64_t *)p1 != 0; p1++); - statelist->len = p1 - statelist->slhead; - statelist->sltail = --p1; - qsort(statelist->slhead, statelist->len, sizeof(uint64_t), Compare16Bits); + statelist->head.slhead = lfsr_recovery32(statelist->ks1, statelist->nt ^ statelist->uid); + for (p1 = statelist->head.slhead; *(uint64_t *)p1 != 0; p1++); + statelist->len = p1 - statelist->head.slhead; + statelist->tail.sltail = --p1; + qsort(statelist->head.slhead, statelist->len, sizeof(uint64_t), Compare16Bits); - return statelist->slhead; + 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; uint32_t uid; UsbCommand resp; - - StateList_t statelists[2]; struct Crypto1State *p1, *p2, *p3, *p4; @@ -122,27 +116,27 @@ int mfnested(uint8_t blockNo, uint8_t keyType, uint8_t * key, uint8_t trgBlockNo // wait for threads to terminate: for (i = 0; i < 2; i++) { - pthread_join(thread_id[i], (void*)&statelists[i].slhead); + pthread_join(thread_id[i], (void*)&statelists[i].head.slhead); } // the first 16 Bits of the cryptostate already contain part of our key. // Create the intersection of the two lists based on these 16 Bits and // roll back the cryptostate - p1 = p3 = statelists[0].slhead; - p2 = p4 = statelists[1].slhead; - while (p1 <= statelists[0].sltail && p2 <= statelists[1].sltail) { + p1 = p3 = statelists[0].head.slhead; + p2 = p4 = statelists[1].head.slhead; + while (p1 <= statelists[0].tail.sltail && p2 <= statelists[1].tail.sltail) { if (Compare16Bits(p1, p2) == 0) { struct Crypto1State savestate, *savep = &savestate; savestate = *p1; - while(Compare16Bits(p1, savep) == 0 && p1 <= statelists[0].sltail) { + while(Compare16Bits(p1, savep) == 0 && p1 <= statelists[0].tail.sltail) { *p3 = *p1; lfsr_rollback_word(p3, statelists[0].nt ^ statelists[0].uid, 0); p3++; p1++; } savestate = *p2; - while(Compare16Bits(p2, savep) == 0 && p2 <= statelists[1].sltail) { + while(Compare16Bits(p2, savep) == 0 && p2 <= statelists[1].tail.sltail) { *p4 = *p2; lfsr_rollback_word(p4, statelists[1].nt ^ statelists[1].uid, 0); p4++; @@ -156,20 +150,20 @@ int mfnested(uint8_t blockNo, uint8_t keyType, uint8_t * key, uint8_t trgBlockNo } p3->even = 0; p3->odd = 0; p4->even = 0; p4->odd = 0; - statelists[0].len = p3 - statelists[0].slhead; - statelists[1].len = p4 - statelists[1].slhead; - statelists[0].sltail=--p3; - statelists[1].sltail=--p4; + statelists[0].len = p3 - statelists[0].head.slhead; + statelists[1].len = p4 - statelists[1].head.slhead; + statelists[0].tail.sltail=--p3; + statelists[1].tail.sltail=--p4; // the statelists now contain possible keys. The key we are searching for must be in the // intersection of both lists. Create the intersection: - qsort(statelists[0].keyhead, statelists[0].len, sizeof(uint64_t), compar_int); - qsort(statelists[1].keyhead, statelists[1].len, sizeof(uint64_t), compar_int); + qsort(statelists[0].head.keyhead, statelists[0].len, sizeof(uint64_t), compar_int); + qsort(statelists[1].head.keyhead, statelists[1].len, sizeof(uint64_t), compar_int); uint64_t *p5, *p6, *p7; - p5 = p7 = statelists[0].keyhead; - p6 = statelists[1].keyhead; - while (p5 <= statelists[0].keytail && p6 <= statelists[1].keytail) { + p5 = p7 = statelists[0].head.keyhead; + p6 = statelists[1].head.keyhead; + while (p5 <= statelists[0].tail.keytail && p6 <= statelists[1].tail.keytail) { if (compar_int(p5, p6) == 0) { *p7++ = *p5++; p6++; @@ -179,15 +173,15 @@ int mfnested(uint8_t blockNo, uint8_t keyType, uint8_t * key, uint8_t trgBlockNo while (compar_int(p5, p6) == 1) p6++; } } - statelists[0].len = p7 - statelists[0].keyhead; - statelists[0].keytail=--p7; + statelists[0].len = p7 - statelists[0].head.keyhead; + statelists[0].tail.keytail=--p7; memset(resultKey, 0, 6); // The list may still contain several key candidates. Test each of them with mfCheckKeys for (i = 0; i < statelists[0].len; i++) { uint8_t keyBlock[6]; uint64_t key64; - crypto1_get_lfsr(statelists[0].slhead + i, &key64); + 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)) { @@ -196,8 +190,8 @@ int mfnested(uint8_t blockNo, uint8_t keyType, uint8_t * key, uint8_t trgBlockNo } } - free(statelists[0].slhead); - free(statelists[1].slhead); + free(statelists[0].head.slhead); + free(statelists[1].head.slhead); return 0; } @@ -223,7 +217,7 @@ int mfEmlGetMem(uint8_t *data, int blockNum, int blocksCount) { UsbCommand c = {CMD_MIFARE_EML_MEMGET, {blockNum, blocksCount, 0}}; SendCommand(&c); - UsbCommand resp; + UsbCommand resp; if (!WaitForResponseTimeout(CMD_ACK,&resp,1500)) return 1; memcpy(data, resp.d.asBytes, blocksCount * 16); return 0; @@ -238,31 +232,48 @@ int mfEmlSetMem(uint8_t *data, int blockNum, int blocksCount) { // "MAGIC" CARD -int mfCSetUID(uint8_t *uid, uint8_t *oldUID, int wantWipe) { - uint8_t block0[16]; - memset(block0, 0, 16); +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); - 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; - + // 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); } -int mfCSetBlock(uint8_t blockNo, uint8_t *data, uint8_t *uid, int wantWipe, 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_CSETBLOCK, {wantWipe, params & (0xFE | (uid == NULL ? 0:1)), 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; + UsbCommand resp; if (WaitForResponseTimeout(CMD_ACK,&resp,1500)) { isOK = resp.arg[0] & 0xff; - if (uid != NULL) memcpy(uid, resp.d.asBytes, 4); - if (!isOK) return 2; + if (uid != NULL) + memcpy(uid, resp.d.asBytes, 4); + if (!isOK) + return 2; } else { PrintAndLog("Command execute timeout"); return 1; @@ -273,7 +284,7 @@ int mfCSetBlock(uint8_t blockNo, uint8_t *data, uint8_t *uid, int wantWipe, uint int mfCGetBlock(uint8_t blockNo, uint8_t *data, uint8_t params) { uint8_t isOK = 0; - UsbCommand c = {CMD_MIFARE_EML_CGETBLOCK, {params, 0, blockNo}}; + UsbCommand c = {CMD_MIFARE_CGETBLOCK, {params, 0, blockNo}}; SendCommand(&c); UsbCommand resp; @@ -294,28 +305,26 @@ int mfCGetBlock(uint8_t blockNo, uint8_t *data, uint8_t params) { 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[20]; +static char traceFileName[FILE_PATH_SIZE] = {0x00}; static int traceState = TRACE_IDLE; static uint8_t traceCurBlock = 0; static uint8_t traceCurKey = 0; struct Crypto1State *traceCrypto1 = NULL; -struct Crypto1State *revstate; -uint64_t lfsr; -uint32_t ks2; -uint32_t ks3; +struct Crypto1State *revstate = NULL; -uint32_t uid; // serial number -uint32_t nt; // tag challenge -uint32_t nt_par; -uint32_t nr_enc; // encrypted reader challenge -uint32_t ar_enc; // encrypted reader response -uint32_t nr_ar_par; -uint32_t at_enc; // encrypted tag response -uint32_t at_par; +uint64_t key = 0; +uint32_t ks2 = 0; +uint32_t ks3 = 0; + +uint32_t uid = 0; // serial number +uint32_t nt =0; // tag challenge +uint32_t nr_enc =0; // encrypted reader challenge +uint32_t ar_enc =0; // encrypted reader response +uint32_t at_enc =0; // encrypted tag response int isTraceCardEmpty(void) { return ((traceCard[0] == 0) && (traceCard[1] == 0) && (traceCard[2] == 0) && (traceCard[3] == 0)); @@ -334,29 +343,36 @@ int isBlockTrailer(int blockN) { 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."); + PrintAndLog("File reading error."); + fclose(f); return 2; - } + } if (strlen(buf) < 32){ if (feof(f)) break; PrintAndLog("File content error. Block data must include 32 HEX symbols"); + fclose(f); return 2; } for (i = 0; i < 32; i += 2) @@ -377,22 +393,27 @@ int saveTraceCard(void) { 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 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); @@ -422,7 +443,7 @@ void mf_crypto1_decrypt(struct Crypto1State *pcs, uint8_t *data, int len, bool i } -int mfTraceDecode(uint8_t *data_src, int len, uint32_t parity, bool wantSaveToEmlFile) { +int mfTraceDecode(uint8_t *data_src, int len, bool wantSaveToEmlFile) { uint8_t data[64]; if (traceState == TRACE_ERROR) return 1; @@ -449,7 +470,7 @@ int mfTraceDecode(uint8_t *data_src, int len, uint32_t parity, bool wantSaveToEm } // AUTHENTICATION - if ((len ==4) && ((data[0] == 0x60) || (data[0] == 0x61))) { + if ((len == 4) && ((data[0] == 0x60) || (data[0] == 0x61))) { traceState = TRACE_AUTH1; traceCurBlock = data[1]; traceCurKey = data[0] == 60 ? 1:0; @@ -497,7 +518,7 @@ int mfTraceDecode(uint8_t *data_src, int len, uint32_t parity, bool wantSaveToEm break; case TRACE_WRITE_OK: - if ((len == 1) && (data[0] = 0x0a)) { + if ((len == 1) && (data[0] == 0x0a)) { traceState = TRACE_WRITE_DATA; return 0; @@ -523,9 +544,7 @@ int mfTraceDecode(uint8_t *data_src, int len, uint32_t parity, bool wantSaveToEm case TRACE_AUTH1: if (len == 4) { traceState = TRACE_AUTH2; - nt = bytes_to_num(data, 4); - nt_par = parity; return 0; } else { traceState = TRACE_ERROR; @@ -539,7 +558,6 @@ int mfTraceDecode(uint8_t *data_src, int len, uint32_t parity, bool wantSaveToEm nr_enc = bytes_to_num(data, 4); ar_enc = bytes_to_num(data + 4, 4); - nr_ar_par = parity; return 0; } else { traceState = TRACE_ERROR; @@ -552,37 +570,27 @@ int mfTraceDecode(uint8_t *data_src, int len, uint32_t parity, bool wantSaveToEm traceState = TRACE_IDLE; at_enc = bytes_to_num(data, 4); - at_par = parity; // decode key here) - if (!traceCrypto1) { - ks2 = ar_enc ^ prng_successor(nt, 64); - ks3 = at_enc ^ prng_successor(nt, 96); - revstate = lfsr_recovery64(ks2, ks3); - lfsr_rollback_word(revstate, 0, 0); - lfsr_rollback_word(revstate, 0, 0); - lfsr_rollback_word(revstate, nr_enc, 1); - lfsr_rollback_word(revstate, uid ^ nt, 0); - }else{ - ks2 = ar_enc ^ prng_successor(nt, 64); - ks3 = at_enc ^ prng_successor(nt, 96); - revstate = lfsr_recovery64(ks2, ks3); - lfsr_rollback_word(revstate, 0, 0); - 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); + ks2 = ar_enc ^ prng_successor(nt, 64); + ks3 = at_enc ^ prng_successor(nt, 96); + revstate = lfsr_recovery64(ks2, ks3); + lfsr_rollback_word(revstate, 0, 0); + lfsr_rollback_word(revstate, 0, 0); + lfsr_rollback_word(revstate, nr_enc, 1); + lfsr_rollback_word(revstate, uid ^ nt, 0); + + crypto1_get_lfsr(revstate, &key); + printf("Key: %012"llx"\n",key); + AddLogUint64(logHexFileName, "key: ", key); int blockShift = ((traceCurBlock & 0xFC) + 3) * 16; if (isBlockEmpty((traceCurBlock & 0xFC) + 3)) memcpy(traceCard + blockShift + 6, trailerAccessBytes, 4); if (traceCurKey) { - num_to_bytes(lfsr, 6, traceCard + blockShift + 10); + num_to_bytes(key, 6, traceCard + blockShift + 10); } else { - num_to_bytes(lfsr, 6, traceCard + blockShift); + num_to_bytes(key, 6, traceCard + blockShift); } if (wantSaveToEmlFile) saveTraceCard(); @@ -595,7 +603,7 @@ int mfTraceDecode(uint8_t *data_src, int len, uint32_t parity, bool wantSaveToEm // nt = crypto1_word(traceCrypto1, nt ^ uid, 1) ^ nt; - /* traceCrypto1 = crypto1_create(lfsr); // key in lfsr + /* traceCrypto1 = crypto1_create(key); // key in lfsr crypto1_word(traceCrypto1, nt ^ uid, 0); crypto1_word(traceCrypto1, ar, 1); crypto1_word(traceCrypto1, 0, 0);