X-Git-Url: http://cvs.zerfleddert.de/cgi-bin/gitweb.cgi/proxmark3-svn/blobdiff_plain/61972abbdd0a03832cae7d5ae58548fed11e619e..ea54ec739592304a3aa03f3f1bc24c12c4d4b708:/client/mifarehost.c?ds=sidebyside

diff --git a/client/mifarehost.c b/client/mifarehost.c
index 35499b83..57afd203 100644
--- a/client/mifarehost.c
+++ b/client/mifarehost.c
@@ -14,6 +14,7 @@
 #include <pthread.h>
 #include "mifarehost.h"
 #include "proxmark3.h"
+//#include "radixsort.h"
 
 // MIFARE
 int compar_int(const void * a, const void * b) {
@@ -21,16 +22,31 @@ int compar_int(const void * a, const void * b) {
 	//return (*(uint64_t*)b - *(uint64_t*)a);
 
 	// better:
-	if (*(uint64_t*)b == *(uint64_t*)a) return 0;
-	else if (*(uint64_t*)b > *(uint64_t*)a) return 1;
-	else return -1;
+	// if (*(uint64_t*)b > *(uint64_t*)a) return 1;
+	// if (*(uint64_t*)b < *(uint64_t*)a) return -1;
+	// return 0;
+
+	return (*(uint64_t*)b > *(uint64_t*)a) - (*(uint64_t*)b < *(uint64_t*)a);
+	//return (*(int64_t*)b > *(int64_t*)a) - (*(int64_t*)b < *(int64_t*)a);
 }
 
 // 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;
-	else if ((*(uint64_t*)b & 0x00ff000000ff0000) > (*(uint64_t*)a & 0x00ff000000ff0000)) return 1;
-	else return -1;
+
+	// if ((*(uint64_t*)b & 0x00ff000000ff0000) > (*(uint64_t*)a & 0x00ff000000ff0000)) return 1;	
+	// if ((*(uint64_t*)b & 0x00ff000000ff0000) < (*(uint64_t*)a & 0x00ff000000ff0000)) return -1;	
+	// return 0;
+
+	return 
+		((*(uint64_t*)b & 0x00ff000000ff0000) > (*(uint64_t*)a & 0x00ff000000ff0000))
+		-
+		((*(uint64_t*)b & 0x00ff000000ff0000) < (*(uint64_t*)a & 0x00ff000000ff0000))
+		;
+	// return 
+		// ((*(int64_t*)b & 0x00ff000000ff0000) > (*(int64_t*)a & 0x00ff000000ff0000))
+		// -
+		// ((*(int64_t*)b & 0x00ff000000ff0000) < (*(int64_t*)a & 0x00ff000000ff0000))
+		// ;
 }
 
 typedef 
@@ -59,7 +75,9 @@ void* nested_worker_thread(void *arg)
 	StateList_t *statelist = arg;
 
 	statelist->head.slhead = lfsr_recovery32(statelist->ks1, statelist->nt ^ statelist->uid);
-	for (p1 = statelist->head.slhead; *(uint64_t *)p1 != 0; p1++);
+	
+	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);
@@ -69,54 +87,41 @@ void* nested_worker_thread(void *arg)
 
 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);
-	
 	UsbCommand c = {CMD_MIFARE_NESTED, {blockNo + keyType * 0x100, trgBlockNo + trgKeyType * 0x100, calibrate}};
 	memcpy(c.d.asBytes, key, 6);
+	clearCommandBuffer();
 	SendCommand(&c);
+	if (!WaitForResponseTimeout(CMD_ACK, &resp, 1500)) return -1;
 
-	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);
+	// error during nested
+	if (resp.arg[0]) return resp.arg[0];
+	
+	memcpy(&uid, resp.d.asBytes, 4);
 			
-			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);
-			}
-		}
-		else {
-			PrintAndLog("Got 0 keys from proxmark."); 
-			return 1;
-		}
+	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
-	
+	// calc keys	
 	pthread_t thread_id[2];
 		
 	// create and run worker threads
-	for (i = 0; i < 2; i++) {
+	for (i = 0; i < 2; i++)
 		pthread_create(thread_id + i, NULL, nested_worker_thread, &statelists[i]);
-	}
 	
 	// wait for threads to terminate:
-	for (i = 0; i < 2; i++) {
+	for (i = 0; i < 2; i++)
 		pthread_join(thread_id[i], (void*)&statelists[i].head.slhead);
-	}
 
 
 	// the first 16 Bits of the cryptostate already contain part of our key.
@@ -147,6 +152,7 @@ int mfnested(uint8_t blockNo, uint8_t keyType, uint8_t * key, uint8_t trgBlockNo
 			while (Compare16Bits(p1, p2) == 1) p2++;
 		}
 	}
+	
 	p3->even = 0; p3->odd = 0;
 	p4->even = 0; p4->odd = 0;
 	statelists[0].len = p3 - statelists[0].head.slhead;
@@ -159,6 +165,12 @@ int mfnested(uint8_t blockNo, uint8_t keyType, uint8_t * key, uint8_t trgBlockNo
 	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);
 
+	// 	clock_t t1 = clock();
+	//radixSort(statelists[0].head.keyhead, statelists[0].len);
+	//radixSort(statelists[1].head.keyhead, statelists[1].len);
+	// t1 = clock() - t1;	
+	// PrintAndLog("radixsort, ticks %.0f", (float)t1);
+
 	uint64_t *p5, *p6, *p7;
 	p5 = p7 = statelists[0].head.keyhead; 
 	p6 = statelists[1].head.keyhead;
@@ -173,38 +185,39 @@ int mfnested(uint8_t blockNo, uint8_t keyType, uint8_t * key, uint8_t trgBlockNo
 		}
 	}
 	statelists[0].len = p7 - statelists[0].head.keyhead;
-	statelists[0].tail.keytail=--p7;
+	statelists[0].tail.keytail = --p7;
 
 	memset(resultKey, 0, 6);
+	uint64_t key64 = 0;
+
 	// 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].head.slhead + i, &key64);
-		num_to_bytes(key64, 6, keyBlock);
-		key64 = 0;
-		if (!mfCheckKeys(statelists[0].blockNo, statelists[0].keyType, 1, keyBlock, &key64)) {
-			num_to_bytes(key64, 6, resultKey);
-			break;
+		num_to_bytes(key64, 6, resultKey);
+
+		if (!mfCheckKeys(statelists[0].blockNo, statelists[0].keyType, false, 1, resultKey, &key64)) {
+			free(statelists[0].head.slhead);
+			free(statelists[1].head.slhead);
+			PrintAndLog("UID: %08x target block:%3u key type: %c  -- Found key [%012"llx"]", uid, (uint16_t)resp.arg[2] & 0xff, (resp.arg[2] >> 8)?'B':'A', key64);
+			return -5;
 		}
 	}
-	
+	PrintAndLog("UID: %08x target block:%3u key type: %c", uid, (uint16_t)resp.arg[2] & 0xff, (resp.arg[2] >> 8)?'B':'A');	
 	free(statelists[0].head.slhead);
 	free(statelists[1].head.slhead);
-	
-	return 0;
+	return -4;
 }
 
-int mfCheckKeys (uint8_t blockNo, uint8_t keyType, uint8_t keycnt, uint8_t * keyBlock, uint64_t * key){
+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, keyType, keycnt}};
+	UsbCommand c = {CMD_MIFARE_CHKKEYS, { (blockNo | (keyType<<8)), clear_trace, keycnt}};
 	memcpy(c.d.asBytes, keyBlock, 6 * keycnt);
+	clearCommandBuffer();
 	SendCommand(&c);
-
 	UsbCommand resp;
-	if (!WaitForResponseTimeout(CMD_ACK,&resp,3000)) return 1;
+	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;
@@ -214,34 +227,40 @@ int mfCheckKeys (uint8_t blockNo, uint8_t keyType, uint8_t keycnt, uint8_t * key
 
 int mfEmlGetMem(uint8_t *data, int blockNum, int blocksCount) {
 	UsbCommand c = {CMD_MIFARE_EML_MEMGET, {blockNum, blocksCount, 0}};
+	clearCommandBuffer();
  	SendCommand(&c);
-
-  UsbCommand resp;
+	UsbCommand resp;
 	if (!WaitForResponseTimeout(CMD_ACK,&resp,1500)) return 1;
 	memcpy(data, resp.d.asBytes, blocksCount * 16);
 	return 0;
 }
 
 int mfEmlSetMem(uint8_t *data, int blockNum, int blocksCount) {
-	UsbCommand c = {CMD_MIFARE_EML_MEMSET, {blockNum, blocksCount, 0}};
-	memcpy(c.d.asBytes, data, blocksCount * 16); 
+	return mfEmlSetMem_xt(data, blockNum, blocksCount, 16);
+}
+
+int mfEmlSetMem_xt(uint8_t *data, int blockNum, int blocksCount, int blockBtWidth) {
+	UsbCommand c = {CMD_MIFARE_EML_MEMSET, {blockNum, blocksCount, blockBtWidth}};
+	memcpy(c.d.asBytes, data, blocksCount * blockBtWidth); 
+
+	clearCommandBuffer();
 	SendCommand(&c);
 	return 0;
 }
 
 // "MAGIC" CARD
 
-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 mfCSetUID(uint8_t *uid, uint8_t *atqa, uint8_t *sak, uint8_t *oldUID, uint8_t wipecard) {
 
-	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.");
-	}
+	uint8_t params = MAGIC_SINGLE;
+	uint8_t block0[16];
+	memset(block0, 0x00, sizeof(block0));
+
+	int old = mfCGetBlock(0, block0, params);
+	if (old == 0)
+		PrintAndLog("old block 0:  %s", sprint_hex(block0, sizeof(block0)));
+	else 
+		PrintAndLog("Couldn't get old data. Will write over the last bytes of Block 0.");	
 
 	// fill in the new values
 	// UID
@@ -249,25 +268,30 @@ int mfCSetUID(uint8_t *uid, uint8_t *atqa, uint8_t *sak, uint8_t *oldUID, bool w
 	// 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)
+	if ( sak != NULL )
 		block0[5]=sak[0];
-	if (atqa!=NULL) {
+	
+	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);
+	
+	if ( wipecard )		 params |= MAGIC_WIPE;	
+	if ( oldUID == NULL) params |= MAGIC_UID;
+	
+	return mfCSetBlock(0, block0, oldUID, params);
 }
 
-int mfCSetBlock(uint8_t blockNo, uint8_t *data, uint8_t *uid, bool wantWipe, uint8_t params) {
+int mfCSetBlock(uint8_t blockNo, uint8_t *data, uint8_t *uid, uint8_t params) {
 
 	uint8_t isOK = 0;
-	UsbCommand c = {CMD_MIFARE_CSETBLOCK, {wantWipe, params & (0xFE | (uid == NULL ? 0:1)), blockNo}};
+	UsbCommand c = {CMD_MIFARE_CSETBLOCK, {params, blockNo, 0}};
 	memcpy(c.d.asBytes, data, 16); 
+	clearCommandBuffer();
 	SendCommand(&c);
-
-  UsbCommand resp;
-	if (WaitForResponseTimeout(CMD_ACK,&resp,1500)) {
+	UsbCommand resp;
+	if (WaitForResponseTimeout(CMD_ACK, &resp, 1500)) {
 		isOK  = resp.arg[0] & 0xff;
 		if (uid != NULL) 
 			memcpy(uid, resp.d.asBytes, 4);
@@ -282,11 +306,10 @@ int mfCSetBlock(uint8_t blockNo, uint8_t *data, uint8_t *uid, bool wantWipe, uin
 
 int mfCGetBlock(uint8_t blockNo, uint8_t *data, uint8_t params) {
 	uint8_t isOK = 0;
-
-	UsbCommand c = {CMD_MIFARE_CGETBLOCK, {params, 0, blockNo}};
+	UsbCommand c = {CMD_MIFARE_CGETBLOCK, {params, blockNo, 0}};	
+	clearCommandBuffer();
 	SendCommand(&c);
-
-  UsbCommand resp;
+	UsbCommand resp;
 	if (WaitForResponseTimeout(CMD_ACK,&resp,1500)) {
 		isOK  = resp.arg[0] & 0xff;
 		memcpy(data, resp.d.asBytes, 16);
@@ -313,16 +336,17 @@ 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 nr_enc;  // encrypted reader challenge
-uint32_t ar_enc;  // encrypted reader response
-uint32_t at_enc;  // encrypted tag response
+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));
@@ -336,7 +360,7 @@ int isBlockEmpty(int blockN) {
 }
 
 int isBlockTrailer(int blockN) {
- return ((blockN & 0x03) == 0x03);
+	return ((blockN & 0x03) == 0x03);
 }
 
 int loadTraceCard(uint8_t *tuid) {
@@ -354,10 +378,7 @@ int loadTraceCard(uint8_t *tuid) {
 	FillFileNameByUID(traceFileName, tuid, ".eml", 7);
 
 	f = fopen(traceFileName, "r");
-	if (!f) {
-		fclose(f);
-		return 1;
-	}
+	if (!f) return 1;
 	
 	blockNum = 0;
 		
@@ -368,7 +389,7 @@ int loadTraceCard(uint8_t *tuid) {
 			PrintAndLog("File reading error.");
 			fclose(f);
 			return 2;
-    	}
+		}
 
 		if (strlen(buf) < 32){
 			if (feof(f)) break;
@@ -394,10 +415,7 @@ int saveTraceCard(void) {
 	if ((!strlen(traceFileName)) || (isTraceCardEmpty())) return 0;
 	
 	f = fopen(traceFileName, "w+");
-	if ( !f ) {
-		fclose(f);
-		return 1;
-	}
+	if ( !f ) return 1;
 	
 	for (int i = 0; i < 64; i++) {  // blocks
 		for (int j = 0; j < 16; j++)  // bytes
@@ -437,20 +455,22 @@ void mf_crypto1_decrypt(struct Crypto1State *pcs, uint8_t *data, int len, bool i
 		for (i = 0; i < len; i++)
 			data[i] = crypto1_byte(pcs, 0x00, isEncrypted) ^ data[i];
 	} else {
-		bt = 0;
-		for (i = 0; i < 4; i++)
-			bt |= (crypto1_bit(pcs, 0, isEncrypted) ^ BIT(data[0], i)) << i;
-				
+		bt = 0;		
+		bt |= (crypto1_bit(pcs, 0, isEncrypted) ^ BIT(data[0], 0)) << 0;
+		bt |= (crypto1_bit(pcs, 0, isEncrypted) ^ BIT(data[0], 1)) << 1;
+		bt |= (crypto1_bit(pcs, 0, isEncrypted) ^ BIT(data[0], 2)) << 2;
+		bt |= (crypto1_bit(pcs, 0, isEncrypted) ^ BIT(data[0], 3)) << 3;			
 		data[0] = bt;
 	}
 	return;
 }
 
-
 int mfTraceDecode(uint8_t *data_src, int len, bool wantSaveToEmlFile) {
+	
 	uint8_t data[64];
 
 	if (traceState == TRACE_ERROR) return 1;
+	
 	if (len > 64) {
 		traceState = TRACE_ERROR;
 		return 1;
@@ -474,7 +494,7 @@ int mfTraceDecode(uint8_t *data_src, int len, bool wantSaveToEmlFile) {
 		}
 		
 		// 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;
@@ -584,17 +604,17 @@ int mfTraceDecode(uint8_t *data_src, int len, bool wantSaveToEmlFile) {
 			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); 
+			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();
 
@@ -607,7 +627,7 @@ int mfTraceDecode(uint8_t *data_src, int len, bool wantSaveToEmlFile) {
 			
 //	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);
@@ -627,3 +647,28 @@ 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 nr_enc;  // encrypted reader challenge
+	uint32_t ar_enc;  // encrypted reader response
+	uint32_t at_enc;  // encrypted tag response
+	*/
+	struct Crypto1State *pcs = NULL;
+	
+	ks2 = ar_enc ^ prng_successor(nt, 64);
+	ks3 = at_enc ^ prng_successor(nt, 96);
+	
+	PrintAndLog("Decrypting data with:");
+	PrintAndLog("      nt: %08x",nt);
+	PrintAndLog("  ar_enc: %08x",ar_enc);
+	PrintAndLog("  at_enc: %08x",at_enc);
+	PrintAndLog("\nEncrypted data: [%s]", sprint_hex(data,len) );
+
+	pcs = lfsr_recovery64(ks2, ks3);
+	mf_crypto1_decrypt(pcs, data, len, FALSE);
+	PrintAndLog("Decrypted data: [%s]", sprint_hex(data,len) );
+	crypto1_destroy(pcs);
+	return 0;
+}