add first attempt at lf miller decoding

[proxmark3-svn] / client / mifarehost.c

diff --git a/client/mifarehost.c b/client/mifarehost.c
index 7f784850841095713a0a54284259bf9e1b552d05..5e0f47603f2498521b1cad4ab7e0aebb2f2522d7 100644 (file)
--- a/client/mifarehost.c
+++ b/client/mifarehost.c
@@ -12,10 +12,43 @@
 #include <stdlib.h> \r
 #include <string.h>\r
 #include <pthread.h>\r
 #include <stdlib.h> \r
 #include <string.h>\r
 #include <pthread.h>\r

-#include "mifarehost.h"\r
+\r
+#include "nonce2key/crapto1.h"\r

 #include "proxmark3.h"\r
 #include "proxmark3.h"\r

+#include "usb_cmd.h"\r
+#include "cmdmain.h"\r
+#include "ui.h"\r
+#include "util.h"\r
+#include "iso14443crc.h"\r
+#include "mifarehost.h"\r
+\r
+// mifare tracer flags used in mfTraceDecode()\r
+#define TRACE_IDLE                                             0x00\r
+#define TRACE_AUTH1                                            0x01\r
+#define TRACE_AUTH2                                            0x02\r
+#define TRACE_AUTH_OK                                  0x03\r
+#define TRACE_READ_DATA                                0x04\r
+#define TRACE_WRITE_OK                                 0x05\r
+#define TRACE_WRITE_DATA                               0x06\r
+#define TRACE_ERROR                                            0xFF\r
+\r

 \r
 // MIFARE\r
 \r
 // MIFARE\r

+int mfCheckKeys (uint8_t blockNo, uint8_t keyType, bool clear_trace, uint8_t keycnt, uint8_t * keyBlock, uint64_t * key){\r
+\r
+       *key = 0;\r
+\r
+       UsbCommand c = {CMD_MIFARE_CHKKEYS, {((blockNo & 0xff) | ((keyType&0xff)<<8)), clear_trace, keycnt}};\r
+       memcpy(c.d.asBytes, keyBlock, 6 * keycnt);\r
+       SendCommand(&c);\r
+\r
+       UsbCommand resp;\r
+       if (!WaitForResponseTimeout(CMD_ACK,&resp,3000)) return 1;\r
+       if ((resp.arg[0] & 0xff) != 0x01) return 2;\r
+       *key = bytes_to_num(resp.d.asBytes, 6);\r
+       return 0;\r
+}\r
+\r

 int compar_int(const void * a, const void * b) {\r
        // didn't work: (the result is truncated to 32 bits)\r
        //return (*(uint64_t*)b - *(uint64_t*)a);\r
 int compar_int(const void * a, const void * b) {\r
        // didn't work: (the result is truncated to 32 bits)\r
        //return (*(uint64_t*)b - *(uint64_t*)a);\r


@@ -69,7 +102,7 @@ void* nested_worker_thread(void *arg)
 \r
 int mfnested(uint8_t blockNo, uint8_t keyType, uint8_t * key, uint8_t trgBlockNo, uint8_t trgKeyType, uint8_t * resultKey, bool calibrate) \r
 {\r
 \r
 int mfnested(uint8_t blockNo, uint8_t keyType, uint8_t * key, uint8_t trgBlockNo, uint8_t trgKeyType, uint8_t * resultKey, bool calibrate) \r
 {\r

-       uint16_t i, len;\r
+       uint16_t i;\r

        uint32_t uid;\r
        UsbCommand resp;\r
 \r
        uint32_t uid;\r
        UsbCommand resp;\r
 \r


@@ -77,31 +110,29 @@ int mfnested(uint8_t blockNo, uint8_t keyType, uint8_t * key, uint8_t trgBlockNo
        struct Crypto1State *p1, *p2, *p3, *p4;\r
        \r
        // flush queue\r
        struct Crypto1State *p1, *p2, *p3, *p4;\r
        \r
        // flush queue\r

-       WaitForResponseTimeout(CMD_ACK,NULL,100);\r
+       WaitForResponseTimeout(CMD_ACK, NULL, 100);\r

        \r
        UsbCommand c = {CMD_MIFARE_NESTED, {blockNo + keyType * 0x100, trgBlockNo + trgKeyType * 0x100, calibrate}};\r
        memcpy(c.d.asBytes, key, 6);\r
        SendCommand(&c);\r
 \r
        \r
        UsbCommand c = {CMD_MIFARE_NESTED, {blockNo + keyType * 0x100, trgBlockNo + trgKeyType * 0x100, calibrate}};\r
        memcpy(c.d.asBytes, key, 6);\r
        SendCommand(&c);\r
 \r

-       if (WaitForResponseTimeout(CMD_ACK,&resp,1500)) {\r
-               len = resp.arg[1];\r
-               if (len == 2) { \r
-                       memcpy(&uid, resp.d.asBytes, 4);\r
-                       PrintAndLog("uid:%08x len=%d trgbl=%d trgkey=%x", uid, len, (uint16_t)resp.arg[2] & 0xff, (uint16_t)resp.arg[2] >> 8);\r
-                       \r
-                       for (i = 0; i < 2; i++) {\r
-                               statelists[i].blockNo = resp.arg[2] & 0xff;\r
-                               statelists[i].keyType = (resp.arg[2] >> 8) & 0xff;\r
-                               statelists[i].uid = uid;\r
+       if (!WaitForResponseTimeout(CMD_ACK, &resp, 1500)) {\r
+               return -1;\r
+       }\r

 \r
 \r

-                               memcpy(&statelists[i].nt,  (void *)(resp.d.asBytes + 4 + i * 8 + 0), 4);\r
-                               memcpy(&statelists[i].ks1, (void *)(resp.d.asBytes + 4 + i * 8 + 4), 4);\r
-                       }\r
-               }\r
-               else {\r
-                       PrintAndLog("Got 0 keys from proxmark."); \r
-                       return 1;\r
-               }\r
+       if (resp.arg[0]) {\r
+               return resp.arg[0];  // error during nested\r
+       }\r
+               \r
+       memcpy(&uid, resp.d.asBytes, 4);\r
+       PrintAndLog("uid:%08x trgbl=%d trgkey=%x", uid, (uint16_t)resp.arg[2] & 0xff, (uint16_t)resp.arg[2] >> 8);\r
+       \r
+       for (i = 0; i < 2; i++) {\r
+               statelists[i].blockNo = resp.arg[2] & 0xff;\r
+               statelists[i].keyType = (resp.arg[2] >> 8) & 0xff;\r
+               statelists[i].uid = uid;\r
+               memcpy(&statelists[i].nt,  (void *)(resp.d.asBytes + 4 + i * 8 + 0), 4);\r
+               memcpy(&statelists[i].ks1, (void *)(resp.d.asBytes + 4 + i * 8 + 4), 4);\r

        }\r
        \r
        // calc keys\r
        }\r
        \r
        // calc keys\r


@@ -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);\r
                num_to_bytes(key64, 6, keyBlock);\r
                key64 = 0;\r
                crypto1_get_lfsr(statelists[0].head.slhead + i, &key64);\r
                num_to_bytes(key64, 6, keyBlock);\r
                key64 = 0;\r

-               if (!mfCheckKeys(statelists[0].blockNo, statelists[0].keyType, 1, keyBlock, &key64)) {\r
+               if (!mfCheckKeys(statelists[0].blockNo, statelists[0].keyType, false, 1, keyBlock, &key64)) {\r

                        num_to_bytes(key64, 6, resultKey);\r
                        break;\r
                }\r
                        num_to_bytes(key64, 6, resultKey);\r
                        break;\r
                }\r


@@ -195,21 +226,6 @@ int mfnested(uint8_t blockNo, uint8_t keyType, uint8_t * key, uint8_t trgBlockNo
        return 0;\r
 }\r
 \r
        return 0;\r
 }\r
 \r

-int mfCheckKeys (uint8_t blockNo, uint8_t keyType, uint8_t keycnt, uint8_t * keyBlock, uint64_t * key){\r
-\r
-       *key = 0;\r
-\r
-       UsbCommand c = {CMD_MIFARE_CHKKEYS, {blockNo, keyType, keycnt}};\r
-       memcpy(c.d.asBytes, keyBlock, 6 * keycnt);\r
-       SendCommand(&c);\r
-\r
-       UsbCommand resp;\r
-       if (!WaitForResponseTimeout(CMD_ACK,&resp,3000)) return 1;\r
-       if ((resp.arg[0] & 0xff) != 0x01) return 2;\r
-       *key = bytes_to_num(resp.d.asBytes, 6);\r
-       return 0;\r
-}\r
-\r

 // EMULATOR\r
 \r
 int mfEmlGetMem(uint8_t *data, int blockNum, int blocksCount) {\r
 // EMULATOR\r
 \r
 int mfEmlGetMem(uint8_t *data, int blockNum, int blocksCount) {\r


@@ -231,29 +247,22 @@ int mfEmlSetMem(uint8_t *data, int blockNum, int blocksCount) {
 \r
 // "MAGIC" CARD\r
 \r
 \r
 // "MAGIC" CARD\r
 \r

-int mfCSetUID(uint8_t *uid, uint8_t *oldUID, bool wantWipe) {\r
-       \r
-       uint8_t oldblock0[16] = {0x00};\r
-       uint8_t block0[16] = {0x00};\r
-       memcpy(block0, uid, 4); \r
-       block0[4] = block0[0]^block0[1]^block0[2]^block0[3]; // Mifare UID BCC\r
-       // mifare classic SAK(byte 5) and ATQA(byte 6 and 7)\r
-       //block0[5] = 0x08;\r
-       //block0[6] = 0x04;\r
-       //block0[7] = 0x00;\r
-       \r
-       block0[5] = 0x01;  //sak\r
-       block0[6] = 0x01;\r
-       block0[7] = 0x0f;\r
-       \r
-       int old = mfCGetBlock(0, oldblock0, CSETBLOCK_SINGLE_OPER);\r
-       if ( old == 0) {\r
-               memcpy(block0+8, oldblock0+8, 8);\r
-               PrintAndLog("block 0:  %s", sprint_hex(block0,16));\r
+int mfCGetBlock(uint8_t blockNo, uint8_t *data, uint8_t params) {\r
+       uint8_t isOK = 0;\r
+\r
+       UsbCommand c = {CMD_MIFARE_CGETBLOCK, {params, 0, blockNo}};\r
+       SendCommand(&c);\r
+\r
+  UsbCommand resp;\r
+       if (WaitForResponseTimeout(CMD_ACK,&resp,1500)) {\r
+               isOK  = resp.arg[0] & 0xff;\r
+               memcpy(data, resp.d.asBytes, 16);\r
+               if (!isOK) return 2;\r

        } else {\r
        } else {\r

-               PrintAndLog("Couldn't get olddata. Will write over the last bytes of Block 0.");\r
+               PrintAndLog("Command execute timeout");\r
+               return 1;\r

        }\r
        }\r

-       return mfCSetBlock(0, block0, oldUID, wantWipe, CSETBLOCK_SINGLE_OPER);\r
+       return 0;\r

 }\r
 \r
 int mfCSetBlock(uint8_t blockNo, uint8_t *data, uint8_t *uid, bool wantWipe, uint8_t params) {\r
 }\r
 \r
 int mfCSetBlock(uint8_t blockNo, uint8_t *data, uint8_t *uid, bool wantWipe, uint8_t params) {\r


@@ -277,22 +286,32 @@ int mfCSetBlock(uint8_t blockNo, uint8_t *data, uint8_t *uid, bool wantWipe, uin
        return 0;\r
 }\r
 \r
        return 0;\r
 }\r
 \r

-int mfCGetBlock(uint8_t blockNo, uint8_t *data, uint8_t params) {\r
-       uint8_t isOK = 0;\r
-\r
-       UsbCommand c = {CMD_MIFARE_CGETBLOCK, {params, 0, blockNo}};\r
-       SendCommand(&c);\r
+int mfCSetUID(uint8_t *uid, uint8_t *atqa, uint8_t *sak, uint8_t *oldUID, bool wantWipe) {\r
+       uint8_t oldblock0[16] = {0x00};\r
+       uint8_t block0[16] = {0x00};\r

 \r
 \r

-  UsbCommand resp;\r
-       if (WaitForResponseTimeout(CMD_ACK,&resp,1500)) {\r
-               isOK  = resp.arg[0] & 0xff;\r
-               memcpy(data, resp.d.asBytes, 16);\r
-               if (!isOK) return 2;\r
+       int old = mfCGetBlock(0, oldblock0, CSETBLOCK_SINGLE_OPER);\r
+       if (old == 0) {\r
+               memcpy(block0, oldblock0, 16);\r
+               PrintAndLog("old block 0:  %s", sprint_hex(block0,16));\r

        } else {\r
        } else {\r

-               PrintAndLog("Command execute timeout");\r
-               return 1;\r
+               PrintAndLog("Couldn't get old data. Will write over the last bytes of Block 0.");\r

        }\r
        }\r

-       return 0;\r
+\r
+       // fill in the new values\r
+       // UID\r
+       memcpy(block0, uid, 4); \r
+       // Mifare UID BCC\r
+       block0[4] = block0[0]^block0[1]^block0[2]^block0[3];\r
+       // mifare classic SAK(byte 5) and ATQA(byte 6 and 7, reversed)\r
+       if (sak!=NULL)\r
+               block0[5]=sak[0];\r
+       if (atqa!=NULL) {\r
+               block0[6]=atqa[1];\r
+               block0[7]=atqa[0];\r
+       }\r
+       PrintAndLog("new block 0:  %s", sprint_hex(block0,16));\r
+       return mfCSetBlock(0, block0, oldUID, wantWipe, CSETBLOCK_SINGLE_OPER);\r

 }\r
 \r
 // SNIFFER\r
 }\r
 \r
 // SNIFFER\r


@@ -336,6 +355,23 @@ int isBlockTrailer(int blockN) {
  return ((blockN & 0x03) == 0x03);\r
 }\r
 \r
  return ((blockN & 0x03) == 0x03);\r
 }\r
 \r

+int saveTraceCard(void) {\r
+       FILE * f;\r
+       \r
+       if ((!strlen(traceFileName)) || (isTraceCardEmpty())) return 0;\r
+       \r
+       f = fopen(traceFileName, "w+");\r
+       if ( !f ) return 1;\r
+       \r
+       for (int i = 0; i < 64; i++) {  // blocks\r
+               for (int j = 0; j < 16; j++)  // bytes\r
+                       fprintf(f, "%02x", *(traceCard + i * 16 + j)); \r
+               fprintf(f,"\n");\r
+       }\r
+       fclose(f);\r
+       return 0;\r
+}\r
+\r

 int loadTraceCard(uint8_t *tuid) {\r
        FILE * f;\r
        char buf[64] = {0x00};\r
 int loadTraceCard(uint8_t *tuid) {\r
        FILE * f;\r
        char buf[64] = {0x00};\r


@@ -351,10 +387,7 @@ int loadTraceCard(uint8_t *tuid) {
        FillFileNameByUID(traceFileName, tuid, ".eml", 7);\r
 \r
        f = fopen(traceFileName, "r");\r
        FillFileNameByUID(traceFileName, tuid, ".eml", 7);\r
 \r
        f = fopen(traceFileName, "r");\r

-       if (!f) {\r
-               fclose(f);\r
-               return 1;\r
-       }\r
+       if (!f) return 1;\r

        \r
        blockNum = 0;\r
                \r
        \r
        blockNum = 0;\r
                \r


@@ -385,26 +418,6 @@ int loadTraceCard(uint8_t *tuid) {
        return 0;\r
 }\r
 \r
        return 0;\r
 }\r
 \r

-int saveTraceCard(void) {\r
-       FILE * f;\r
-       \r
-       if ((!strlen(traceFileName)) || (isTraceCardEmpty())) return 0;\r
-       \r
-       f = fopen(traceFileName, "w+");\r
-       if ( !f ) {\r
-               fclose(f);\r
-               return 1;\r
-       }\r
-       \r
-       for (int i = 0; i < 64; i++) {  // blocks\r
-               for (int j = 0; j < 16; j++)  // bytes\r
-                       fprintf(f, "%02x", *(traceCard + i * 16 + j)); \r
-               fprintf(f,"\n");\r
-       }\r
-       fclose(f);\r
-       return 0;\r
-}\r
-\r

 int mfTraceInit(uint8_t *tuid, uint8_t *atqa, uint8_t sak, bool wantSaveToEmlFile) {\r
 \r
        if (traceCrypto1) \r
 int mfTraceInit(uint8_t *tuid, uint8_t *atqa, uint8_t sak, bool wantSaveToEmlFile) {\r
 \r
        if (traceCrypto1) \r


@@ -624,3 +637,23 @@ int mfTraceDecode(uint8_t *data_src, int len, bool wantSaveToEmlFile) {
 \r
        return 0;\r
 }\r
 \r
        return 0;\r
 }\r

+\r
+int tryDecryptWord(uint32_t nt, uint32_t ar_enc, uint32_t at_enc, uint8_t *data, int len){\r
+       /*\r
+       uint32_t nt;      // tag challenge\r
+       uint32_t ar_enc;  // encrypted reader response\r
+       uint32_t at_enc;  // encrypted tag response\r
+       */\r
+       if (traceCrypto1) {\r
+               crypto1_destroy(traceCrypto1);\r
+       }\r
+       ks2 = ar_enc ^ prng_successor(nt, 64);\r
+       ks3 = at_enc ^ prng_successor(nt, 96);\r
+       traceCrypto1 = lfsr_recovery64(ks2, ks3);\r
+\r
+       mf_crypto1_decrypt(traceCrypto1, data, len, 0);\r
+\r
+       PrintAndLog("Decrypted data: [%s]", sprint_hex(data,len) );\r
+       crypto1_destroy(traceCrypto1);\r
+       return 0;\r
+}\r