X-Git-Url: https://git.zerfleddert.de/cgi-bin/gitweb.cgi/proxmark3-svn/blobdiff_plain/4abe4f5867e52615c0e053a2bab4b3b129b12d45..1282b0e6917006ece024a18517b062accdf74a7f:/armsrc/mifareutil.c

diff --git a/armsrc/mifareutil.c b/armsrc/mifareutil.c
index 59dafedc..085531f4 100644
--- a/armsrc/mifareutil.c
+++ b/armsrc/mifareutil.c
@@ -1,12 +1,12 @@
 //-----------------------------------------------------------------------------
-// Merlok, May 2011
-// Many authors, that makes it possible
+// Merlok, May 2011, 2012
+// Many authors, whom made it possible
 //
 // This code is licensed to you under the terms of the GNU GPL, version 2 or,
 // at your option, any later version. See the LICENSE.txt file for the text of
 // the license.
 //-----------------------------------------------------------------------------
-// code for work with mifare cards.
+// Work with mifare cards.
 //-----------------------------------------------------------------------------
 
 #include "proxmark3.h"
@@ -19,11 +19,70 @@
 #include "crapto1.h"
 #include "mifareutil.h"
 
+int MF_DBGLEVEL = MF_DBG_ALL;
+
+// memory management
 uint8_t* mifare_get_bigbufptr(void) {
-	return (((uint8_t *)BigBuf) + 3560);	// was 3560 - tied to other size changes
+	return (((uint8_t *)BigBuf) + MIFARE_BUFF_OFFSET);	// was 3560 - tied to other size changes
+}
+uint8_t* eml_get_bigbufptr_sendbuf(void) {
+	return (((uint8_t *)BigBuf) + RECV_CMD_OFFSET);	
+}
+uint8_t* eml_get_bigbufptr_recbuf(void) {
+	return (((uint8_t *)BigBuf) + MIFARE_BUFF_OFFSET);
+}
+uint8_t* eml_get_bigbufptr_cardmem(void) {
+	return (((uint8_t *)BigBuf) + CARD_MEMORY);
+}
+
+// crypto1 helpers
+void mf_crypto1_decrypt(struct Crypto1State *pcs, uint8_t *data, int len){
+	uint8_t	bt = 0;
+	int i;
+	
+	if (len != 1) {
+		for (i = 0; i < len; i++)
+			data[i] = crypto1_byte(pcs, 0x00, 0) ^ data[i];
+	} else {
+		bt = 0;
+		for (i = 0; i < 4; i++)
+			bt |= (crypto1_bit(pcs, 0, 0) ^ BIT(data[0], i)) << i;
+				
+		data[0] = bt;
+	}
+	return;
+}
+
+void mf_crypto1_encrypt(struct Crypto1State *pcs, uint8_t *data, int len, uint32_t *par) {
+	uint8_t bt = 0;
+	int i;
+	uint32_t mltpl = 1 << (len - 1); // for len=18 it=0x20000
+	*par = 0;
+	for (i = 0; i < len; i++) {
+		bt = data[i];
+		data[i] = crypto1_byte(pcs, 0x00, 0) ^ data[i];
+		*par = (*par >> 1) | ( ((filter(pcs->odd) ^ oddparity(bt)) & 0x01) * mltpl );
+	}	
+	return;
+}
+
+uint8_t mf_crypto1_encrypt4bit(struct Crypto1State *pcs, uint8_t data) {
+	uint8_t bt = 0;
+	int i;
+
+	for (i = 0; i < 4; i++)
+		bt |= (crypto1_bit(pcs, 0, 0) ^ BIT(data, i)) << i;
+		
+	return bt;
 }
 
+// send commands
 int mifare_sendcmd_short(struct Crypto1State *pcs, uint8_t crypted, uint8_t cmd, uint8_t data, uint8_t* answer)
+{
+	return mifare_sendcmd_shortex(pcs, crypted, cmd, data, answer, NULL);
+}
+
+int mifare_sendcmd_shortex(struct Crypto1State *pcs, uint8_t crypted, uint8_t cmd, uint8_t data, uint8_t* answer, uint32_t * parptr)
 {
 	uint8_t dcmd[4], ecmd[4];
 	uint32_t pos, par, res;
@@ -48,7 +107,9 @@ int mifare_sendcmd_short(struct Crypto1State *pcs, uint8_t crypted, uint8_t cmd,
 		ReaderTransmit(dcmd, sizeof(dcmd));
 	}
 
-	int len = ReaderReceive(answer);
+	int len = ReaderReceivePar(answer, &par);
+	
+	if (parptr) *parptr = par;
 
 	if (crypted == CRYPT_ALL) {
 		if (len == 1) {
@@ -69,7 +130,13 @@ int mifare_sendcmd_short(struct Crypto1State *pcs, uint8_t crypted, uint8_t cmd,
 	return len;
 }
 
+// mifare commands
 int mifare_classic_auth(struct Crypto1State *pcs, uint32_t uid, uint8_t blockNo, uint8_t keyType, uint64_t ui64Key, uint64_t isNested) 
+{
+	return mifare_classic_authex(pcs, uid, blockNo, keyType, ui64Key, isNested, NULL);
+}
+
+int mifare_classic_authex(struct Crypto1State *pcs, uint32_t uid, uint8_t blockNo, uint8_t keyType, uint64_t ui64Key, uint64_t isNested, uint32_t * ntptr) 
 {
 	// variables
 	int len;	
@@ -84,7 +151,7 @@ int mifare_classic_auth(struct Crypto1State *pcs, uint32_t uid, uint8_t blockNo,
 
 	// Transmit MIFARE_CLASSIC_AUTH
 	len = mifare_sendcmd_short(pcs, isNested, 0x60 + (keyType & 0x01), blockNo, receivedAnswer);
-//	Dbprintf("rand nonce len: %x", len);  
+  if (MF_DBGLEVEL >= 4)	Dbprintf("rand nonce len: %x", len);  
 	if (len != 4) return 1;
 	
 	ar[0] = 0x55;
@@ -111,7 +178,12 @@ int mifare_classic_auth(struct Crypto1State *pcs, uint32_t uid, uint8_t blockNo,
 	}
 
 	// some statistic
-	Dbprintf("auth uid: %08x nt: %08x", uid, nt);  
+	if (!ntptr && (MF_DBGLEVEL >= 3))
+		Dbprintf("auth uid: %08x nt: %08x", uid, nt);  
+	
+	// save Nt
+	if (ntptr)
+		*ntptr = nt;
 
 	par = 0;
 	// Generate (encrypted) nr+parity by loading it into the cipher (Nr)
@@ -139,7 +211,7 @@ int mifare_classic_auth(struct Crypto1State *pcs, uint32_t uid, uint8_t blockNo,
 	len = ReaderReceive(receivedAnswer);
 	if (!len)
 	{
-		Dbprintf("Authentication failed. Card timeout.");
+		if (MF_DBGLEVEL >= 1)	Dbprintf("Authentication failed. Card timeout.");
 		return 2;
 	}
 	
@@ -147,7 +219,7 @@ int mifare_classic_auth(struct Crypto1State *pcs, uint32_t uid, uint8_t blockNo,
 	ntpp = prng_successor(nt, 32) ^ crypto1_word(pcs, 0,0);
 	
 	if (ntpp != bytes_to_num(tmp4, 4)) {
-		Dbprintf("Authentication failed. Error card response.");
+		if (MF_DBGLEVEL >= 1)	Dbprintf("Authentication failed. Error card response.");
 		return 3;
 	}
 
@@ -165,18 +237,18 @@ int mifare_classic_readblock(struct Crypto1State *pcs, uint32_t uid, uint8_t blo
 	// command MIFARE_CLASSIC_READBLOCK
 	len = mifare_sendcmd_short(pcs, 1, 0x30, blockNo, receivedAnswer);
 	if (len == 1) {
-		Dbprintf("Cmd Error: %02x", receivedAnswer[0]);  
+		if (MF_DBGLEVEL >= 1)	Dbprintf("Cmd Error: %02x", receivedAnswer[0]);  
 		return 1;
 	}
 	if (len != 18) {
-		Dbprintf("Cmd Error: card timeout. len: %x", len);  
+		if (MF_DBGLEVEL >= 1)	Dbprintf("Cmd Error: card timeout. len: %x", len);  
 		return 2;
 	}
 
 	memcpy(bt, receivedAnswer + 16, 2);
 	AppendCrc14443a(receivedAnswer, 16);
 	if (bt[0] != receivedAnswer[16] || bt[1] != receivedAnswer[17]) {
-		Dbprintf("Cmd CRC response error.");  
+		if (MF_DBGLEVEL >= 1)	Dbprintf("Cmd CRC response error.");  
 		return 3;
 	}
 	
@@ -199,7 +271,7 @@ int mifare_classic_writeblock(struct Crypto1State *pcs, uint32_t uid, uint8_t bl
 	len = mifare_sendcmd_short(pcs, 1, 0xA0, blockNo, receivedAnswer);
 
 	if ((len != 1) || (receivedAnswer[0] != 0x0A)) {   //  0x0a - ACK
-		Dbprintf("Cmd Error: %02x", receivedAnswer[0]);  
+		if (MF_DBGLEVEL >= 1)	Dbprintf("Cmd Error: %02x", receivedAnswer[0]);  
 		return 1;
 	}
 	
@@ -224,7 +296,7 @@ int mifare_classic_writeblock(struct Crypto1State *pcs, uint32_t uid, uint8_t bl
 		res |= (crypto1_bit(pcs, 0, 0) ^ BIT(receivedAnswer[0], i)) << i;
 
 	if ((len != 1) || (res != 0x0A)) {
-		Dbprintf("Cmd send data2 Error: %02x", res);  
+		if (MF_DBGLEVEL >= 1)	Dbprintf("Cmd send data2 Error: %02x", res);  
 		return 2;
 	}
 	
@@ -239,11 +311,103 @@ int mifare_classic_halt(struct Crypto1State *pcs, uint32_t uid)
 	// Mifare HALT
 	uint8_t* receivedAnswer = mifare_get_bigbufptr();
 
-	len = mifare_sendcmd_short(pcs, 1, 0x50, 0x00, receivedAnswer);
+	len = mifare_sendcmd_short(pcs, pcs == NULL ? 0:1, 0x50, 0x00, receivedAnswer);
 	if (len != 0) {
-		Dbprintf("halt error. response len: %x", len);  
+		if (MF_DBGLEVEL >= 1)	Dbprintf("halt error. response len: %x", len);  
+		return 1;
+	}
+
+	return 0;
+}
+
+// work with emulator memory
+void emlSetMem(uint8_t *data, int blockNum, int blocksCount) {
+	uint8_t* emCARD = eml_get_bigbufptr_cardmem();
+	
+	memcpy(emCARD + blockNum * 16, data, blocksCount * 16);
+}
+
+void emlGetMem(uint8_t *data, int blockNum, int blocksCount) {
+	uint8_t* emCARD = eml_get_bigbufptr_cardmem();
+	
+	memcpy(data, emCARD + blockNum * 16, blocksCount * 16);
+}
+
+void emlGetMemBt(uint8_t *data, int bytePtr, int byteCount) {
+	uint8_t* emCARD = eml_get_bigbufptr_cardmem();
+	
+	memcpy(data, emCARD + bytePtr, byteCount);
+}
+
+int emlCheckValBl(int blockNum) {
+	uint8_t* emCARD = eml_get_bigbufptr_cardmem();
+	uint8_t* data = emCARD + blockNum * 16;
+
+	if ((data[0] != (data[4] ^ 0xff)) || (data[0] != data[8]) ||
+			(data[1] != (data[5] ^ 0xff)) || (data[1] != data[9]) ||
+			(data[2] != (data[6] ^ 0xff)) || (data[2] != data[10]) ||
+			(data[3] != (data[7] ^ 0xff)) || (data[3] != data[11]) ||
+			(data[12] != (data[13] ^ 0xff)) || (data[12] != data[14]) ||
+			(data[12] != (data[15] ^ 0xff))
+		 ) 
+		return 1;
+	return 0;
+}
+
+int emlGetValBl(uint32_t *blReg, uint8_t *blBlock, int blockNum) {
+	uint8_t* emCARD = eml_get_bigbufptr_cardmem();
+	uint8_t* data = emCARD + blockNum * 16;
+	
+	if (emlCheckValBl(blockNum)) {
 		return 1;
 	}
+	
+	memcpy(blReg, data, 4);
+	*blBlock = data[12];
+	
+	return 0;
+}
 
+int emlSetValBl(uint32_t blReg, uint8_t blBlock, int blockNum) {
+	uint8_t* emCARD = eml_get_bigbufptr_cardmem();
+	uint8_t* data = emCARD + blockNum * 16;
+	
+	memcpy(data + 0, &blReg, 4);
+	memcpy(data + 8, &blReg, 4);
+	blReg = blReg ^ 0xffffffff;
+	memcpy(data + 4, &blReg, 4);
+	
+	data[12] = blBlock;
+	data[13] = blBlock ^ 0xff;
+	data[14] = blBlock;
+	data[15] = blBlock ^ 0xff;
+	
 	return 0;
 }
+
+uint64_t emlGetKey(int sectorNum, int keyType) {
+	uint8_t key[6];
+	uint8_t* emCARD = eml_get_bigbufptr_cardmem();
+	
+	memcpy(key, emCARD + 3 * 16 + sectorNum * 4 * 16 + keyType * 10, 6);
+	return bytes_to_num(key, 6);
+}
+
+void emlClearMem(void) {
+	int b;
+	
+	const uint8_t trailer[] = {0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x07, 0x80, 0x69, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff};
+	const uint8_t uid[]   =   {0xe6, 0x84, 0x87, 0xf3, 0x16, 0x88, 0x04, 0x00, 0x46, 0x8e, 0x45, 0x55, 0x4d, 0x70, 0x41, 0x04};
+	uint8_t* emCARD = eml_get_bigbufptr_cardmem();
+	
+	memset(emCARD, 0, CARD_MEMORY_LEN);
+	
+	// fill sectors trailer data
+	for(b = 3; b < 256; b<127?(b+=4):(b+=16)) {
+		emlSetMem((uint8_t *)trailer, b , 1);
+	}	
+
+	// uid
+	emlSetMem((uint8_t *)uid, 0, 1);
+	return;
+}