X-Git-Url: http://git.zerfleddert.de/cgi-bin/gitweb.cgi/proxmark3-svn/blobdiff_plain/9c0f13d5dd68761154694c71a8c4fba4f876ed2d..33443e7:/client/mifarehost.c

diff --git a/client/mifarehost.c b/client/mifarehost.c
index 7f784850..411a44c1 100644
--- a/client/mifarehost.c
+++ b/client/mifarehost.c
@@ -12,10 +12,43 @@
 #include <stdlib.h> 
 #include <string.h>
 #include <pthread.h>
-#include "mifarehost.h"
+
+#include "crapto1/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);
@@ -69,7 +102,7 @@ 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;
 
@@ -77,31 +110,29 @@ int mfnested(uint8_t blockNo, uint8_t keyType, uint8_t * key, uint8_t trgBlockNo
 	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
@@ -183,7 +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;
 		}
@@ -195,21 +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) {
@@ -231,29 +247,22 @@ int mfEmlSetMem(uint8_t *data, int blockNum, int blocksCount) {
 
 // "MAGIC" CARD
 
-int mfCSetUID(uint8_t *uid, uint8_t *oldUID, bool wantWipe) {
-	
-	uint8_t oldblock0[16] = {0x00};
-	uint8_t block0[16] = {0x00};
-	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] = 0x08;
-	//block0[6] = 0x04;
-	//block0[7] = 0x00;
-	
-	block0[5] = 0x01;  //sak
-	block0[6] = 0x01;
-	block0[7] = 0x0f;
-	
-	int old = mfCGetBlock(0, oldblock0, CSETBLOCK_SINGLE_OPER);
-	if ( old == 0) {
-		memcpy(block0+8, oldblock0+8, 8);
-		PrintAndLog("block 0:  %s", sprint_hex(block0,16));
+int mfCGetBlock(uint8_t blockNo, uint8_t *data, uint8_t params) {
+	uint8_t isOK = 0;
+
+	UsbCommand c = {CMD_MIFARE_CGETBLOCK, {params, 0, blockNo}};
+	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;
 	} else {
-		PrintAndLog("Couldn't get olddata. Will write over the last bytes of Block 0.");
+		PrintAndLog("Command execute timeout");
+		return 1;
 	}
-	return mfCSetBlock(0, block0, oldUID, wantWipe, CSETBLOCK_SINGLE_OPER);
+	return 0;
 }
 
 int mfCSetBlock(uint8_t blockNo, uint8_t *data, uint8_t *uid, bool wantWipe, uint8_t params) {
@@ -277,22 +286,32 @@ 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;
-
-	UsbCommand c = {CMD_MIFARE_CGETBLOCK, {params, 0, blockNo}};
-	SendCommand(&c);
+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};
 
-  UsbCommand resp;
-	if (WaitForResponseTimeout(CMD_ACK,&resp,1500)) {
-		isOK  = resp.arg[0] & 0xff;
-		memcpy(data, resp.d.asBytes, 16);
-		if (!isOK) return 2;
+	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("Command execute timeout");
-		return 1;
+		PrintAndLog("Couldn't get old data. Will write over the last bytes of Block 0.");
 	}
-	return 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
@@ -336,6 +355,23 @@ 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] = {0x00};
@@ -351,10 +387,7 @@ 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;
 		
@@ -385,26 +418,6 @@ int loadTraceCard(uint8_t *tuid) {
 	return 0;
 }
 
-int saveTraceCard(void) {
-	FILE * f;
-	
-	if ((!strlen(traceFileName)) || (isTraceCardEmpty())) return 0;
-	
-	f = fopen(traceFileName, "w+");
-	if ( !f ) {
-		fclose(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) 
@@ -624,3 +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;
+}