X-Git-Url: https://git.zerfleddert.de/cgi-bin/gitweb.cgi/proxmark3-svn/blobdiff_plain/0de8e3874d6524379550a50a4d9c29faf2d239ea..6063655a3ca719d224c61ece09645cedd5b4818c:/client/mifarehost.c

diff --git a/client/mifarehost.c b/client/mifarehost.c
index d3f4a4cd..4e9ac539 100644
--- a/client/mifarehost.c
+++ b/client/mifarehost.c
@@ -14,8 +14,8 @@
 #include <pthread.h>
 #include "mifarehost.h"
 #include "proxmark3.h"
-
-#define llx PRIx64
+//#include "radixsort.h"
+#include <time.h>
 
 // MIFARE
 int compar_int(const void * a, const void * b) {
@@ -23,16 +23,25 @@ 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);
 }
 
 // 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))
+		;
+*/
 }
 
 typedef 
@@ -59,13 +68,13 @@ void* nested_worker_thread(void *arg)
 {
 	struct Crypto1State *p1;
 	StateList_t *statelist = arg;
-
-	statelist->head.slhead = lfsr_recovery32(statelist->ks1, statelist->nt ^ statelist->uid);
+	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->head.slhead;
 }
 
@@ -74,28 +83,20 @@ int mfnested(uint8_t blockNo, uint8_t keyType, uint8_t * key, uint8_t trgBlockNo
 	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)) {
-		return -1;
-	}
-
-	if (resp.arg[0]) {
-		return resp.arg[0];  // error during nested
-	}
-		
+	// error during nested
+	if (resp.arg[0]) return resp.arg[0];
+	
 	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;
@@ -104,28 +105,26 @@ int mfnested(uint8_t blockNo, uint8_t keyType, uint8_t * key, uint8_t trgBlockNo
 		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.
 	// Create the intersection of the two lists based on these 16 Bits and
 	// roll back the cryptostate
 	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].tail.sltail) {
@@ -147,6 +146,7 @@ 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;
@@ -158,10 +158,11 @@ int mfnested(uint8_t blockNo, uint8_t keyType, uint8_t * key, uint8_t trgBlockNo
 	// intersection of both lists. Create the intersection:
 	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].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++;
@@ -173,38 +174,58 @@ 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;
 
+	uint32_t numOfCandidates = statelists[0].len;
+	if ( numOfCandidates == 0 ) goto out;
+	
 	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;
+	// uint32_t max_keys = keycnt > (USB_CMD_DATA_SIZE/6) ? (USB_CMD_DATA_SIZE/6) : keycnt;
+	uint8_t keyBlock[USB_CMD_DATA_SIZE] = {0x00};
+
+	for (i = 0; i < numOfCandidates; ++i){
 		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, false, 1, keyBlock, &key64)) {
-			num_to_bytes(key64, 6, resultKey);
-			break;
-		}
+		num_to_bytes(key64, 6, keyBlock + i * 6);
+	}
+
+	if (!mfCheckKeys(statelists[0].blockNo, statelists[0].keyType, false, numOfCandidates, keyBlock, &key64)) {		
+		free(statelists[0].head.slhead);
+		free(statelists[1].head.slhead);
+		num_to_bytes(key64, 6, resultKey);
+
+		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;
 	}
 	
+out:
+	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;
+	free(statelists[1].head.slhead);
+	return -4;
 }
 
 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}};
+	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, 2500)) return 1;
 	if ((resp.arg[0] & 0xff) != 0x01) return 2;
 	*key = bytes_to_num(resp.d.asBytes, 6);
 	return 0;
@@ -237,17 +258,17 @@ int mfEmlSetMem_xt(uint8_t *data, int blockNum, int blocksCount, int blockBtWidt
 
 // "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
@@ -255,26 +276,30 @@ 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)) {
+	if (WaitForResponseTimeout(CMD_ACK, &resp, 1500)) {
 		isOK  = resp.arg[0] & 0xff;
 		if (uid != NULL) 
 			memcpy(uid, resp.d.asBytes, 4);
@@ -289,9 +314,7 @@ 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;
@@ -345,7 +368,7 @@ int isBlockEmpty(int blockN) {
 }
 
 int isBlockTrailer(int blockN) {
- return ((blockN & 0x03) == 0x03);
+	return ((blockN & 0x03) == 0x03);
 }
 
 int loadTraceCard(uint8_t *tuid) {
@@ -440,20 +463,22 @@ 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;
@@ -630,3 +655,28 @@ 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;
+}