]> cvs.zerfleddert.de Git - proxmark3-svn/blobdiff - client/mifarehost.c
Changes in cmd handling
[proxmark3-svn] / client / mifarehost.c
index cfcc17ba17872036c1477b581f3e39de51b96ec0..9676e6f7a63e28fe2ae64a196947220d2ed00861 100644 (file)
@@ -12,9 +12,9 @@
 #include <stdlib.h> \r
 #include <string.h>\r
 #include "mifarehost.h"\r
+#include "proxmark3.h"\r
 \r
 // MIFARE\r
-\r
 int compar_int(const void * a, const void * b) {\r
        return (*(uint64_t*)b - *(uint64_t*)a);\r
 }\r
@@ -59,12 +59,12 @@ int mfnested(uint8_t blockNo, uint8_t keyType, uint8_t * key, uint8_t trgBlockNo
        fnVector * vector = NULL;\r
        countKeys       *ck;\r
        int lenVector = 0;\r
-       UsbCommand * resp = NULL;\r
+       UsbCommand resp;\r
        \r
        memset(resultKeys, 0x00, 16 * 6);\r
 \r
        // flush queue\r
-       while (WaitForResponseTimeout(CMD_ACK, 500) != NULL) ;\r
+       WaitForResponseTimeout(CMD_ACK,NULL,100);\r
        \r
   UsbCommand c = {CMD_MIFARE_NESTED, {blockNo, keyType, trgBlockNo + trgKeyType * 0x100}};\r
        memcpy(c.d.asBytes, key, 6);\r
@@ -81,18 +81,16 @@ int mfnested(uint8_t blockNo, uint8_t keyType, uint8_t * key, uint8_t trgBlockNo
                        break;\r
                }\r
 \r
-               resp = WaitForResponseTimeout(CMD_ACK, 1500);\r
-\r
-               if (resp != NULL) {\r
-                       isEOF  = resp->arg[0] & 0xff;\r
+               if (WaitForResponseTimeout(CMD_ACK,&resp,1500)) {\r
+                       isEOF  = resp.arg[0] & 0xff;\r
 \r
                        if (isEOF) break;\r
                        \r
-                       len = resp->arg[1] & 0xff;\r
+                       len = resp.arg[1] & 0xff;\r
                        if (len == 0) continue;\r
                        \r
-                       memcpy(&uid, resp->d.asBytes, 4); \r
-                       PrintAndLog("uid:%08x len=%d trgbl=%d trgkey=%x", uid, len, resp->arg[2] & 0xff, (resp->arg[2] >> 8) & 0xff);\r
+                       memcpy(&uid, resp.d.asBytes, 4);\r
+                       PrintAndLog("uid:%08x len=%d trgbl=%d trgkey=%x", uid, len, resp.arg[2] & 0xff, (resp.arg[2] >> 8) & 0xff);\r
                        vector = (fnVector *) realloc((void *)vector, (lenVector + len) * sizeof(fnVector) + 200);\r
                        if (vector == NULL) {\r
                                PrintAndLog("Memory allocation error for fnVector. len: %d bytes: %d", lenVector + len, (lenVector + len) * sizeof(fnVector)); \r
@@ -100,12 +98,12 @@ int mfnested(uint8_t blockNo, uint8_t keyType, uint8_t * key, uint8_t trgBlockNo
                        }\r
                        \r
                        for (i = 0; i < len; i++) {\r
-                               vector[lenVector + i].blockNo = resp->arg[2] & 0xff;\r
-                               vector[lenVector + i].keyType = (resp->arg[2] >> 8) & 0xff;\r
+                               vector[lenVector + i].blockNo = resp.arg[2] & 0xff;\r
+                               vector[lenVector + i].keyType = (resp.arg[2] >> 8) & 0xff;\r
                                vector[lenVector + i].uid = uid;\r
 \r
-                               memcpy(&vector[lenVector + i].nt,  (void *)(resp->d.asBytes + 8 + i * 8 + 0), 4);\r
-                               memcpy(&vector[lenVector + i].ks1, (void *)(resp->d.asBytes + 8 + i * 8 + 4), 4);\r
+                               memcpy(&vector[lenVector + i].nt,  (void *)(resp.d.asBytes + 8 + i * 8 + 0), 4);\r
+                               memcpy(&vector[lenVector + i].ks1, (void *)(resp.d.asBytes + 8 + i * 8 + 4), 4);\r
                        }\r
 \r
                        lenVector += len;\r
@@ -187,14 +185,12 @@ int mfCheckKeys (uint8_t blockNo, uint8_t keyType, uint8_t keycnt, uint8_t * key
 \r
   UsbCommand c = {CMD_MIFARE_CHKKEYS, {blockNo, keyType, keycnt}};\r
        memcpy(c.d.asBytes, keyBlock, 6 * keycnt);\r
-\r
   SendCommand(&c);\r
 \r
-       UsbCommand * resp = WaitForResponseTimeout(CMD_ACK, 3000);\r
-\r
-       if (resp == NULL) return 1;\r
-       if ((resp->arg[0] & 0xff) != 0x01) return 2;\r
-       *key = bytes_to_num(resp->d.asBytes, 6);\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
@@ -202,13 +198,11 @@ int mfCheckKeys (uint8_t blockNo, uint8_t keyType, uint8_t keycnt, uint8_t * key
 \r
 int mfEmlGetMem(uint8_t *data, int blockNum, int blocksCount) {\r
        UsbCommand c = {CMD_MIFARE_EML_MEMGET, {blockNum, blocksCount, 0}};\r
\r
-       SendCommand(&c);\r
-\r
-       UsbCommand * resp = WaitForResponseTimeout(CMD_ACK, 1500);\r
+       SendCommand(&c);\r
 \r
-       if (resp == NULL) return 1;\r
-       memcpy(data, resp->d.asBytes, blocksCount * 16); \r
+  UsbCommand resp;\r
+       if (!WaitForResponseTimeout(CMD_ACK,&resp,1500)) return 1;\r
+       memcpy(data, resp.d.asBytes, blocksCount * 16);\r
        return 0;\r
 }\r
 \r
@@ -241,11 +235,10 @@ int mfCSetBlock(uint8_t blockNo, uint8_t *data, uint8_t *uid, int wantWipe, uint
        memcpy(c.d.asBytes, data, 16); \r
        SendCommand(&c);\r
 \r
-       UsbCommand * resp = WaitForResponseTimeout(CMD_ACK, 1500);\r
-\r
-       if (resp != NULL) {\r
-               isOK  = resp->arg[0] & 0xff;\r
-               if (uid != NULL) memcpy(uid, resp->d.asBytes, 4); \r
+  UsbCommand resp;\r
+       if (WaitForResponseTimeout(CMD_ACK,&resp,1500)) {\r
+               isOK  = resp.arg[0] & 0xff;\r
+               if (uid != NULL) memcpy(uid, resp.d.asBytes, 4);\r
                if (!isOK) return 2;\r
        } else {\r
                PrintAndLog("Command execute timeout");\r
@@ -260,11 +253,10 @@ int mfCGetBlock(uint8_t blockNo, uint8_t *data, uint8_t params) {
        UsbCommand c = {CMD_MIFARE_EML_CGETBLOCK, {params, 0, blockNo}};\r
        SendCommand(&c);\r
 \r
-       UsbCommand * resp = WaitForResponseTimeout(CMD_ACK, 1500);\r
-\r
-       if (resp != NULL) {\r
-               isOK  = resp->arg[0] & 0xff;\r
-               memcpy(data, resp->d.asBytes, 16); \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
                PrintAndLog("Command execute timeout");\r
@@ -275,9 +267,13 @@ int mfCGetBlock(uint8_t blockNo, uint8_t *data, uint8_t params) {
 \r
 // SNIFFER\r
 \r
+// constants\r
+static uint8_t trailerAccessBytes[4] = {0x08, 0x77, 0x8F, 0x00};\r
+\r
 // variables\r
 char logHexFileName[200] = {0x00};\r
-static uint8_t traceCard[4096];\r
+static uint8_t traceCard[4096] = {0x00};\r
+static char traceFileName[20];\r
 static int traceState = TRACE_IDLE;\r
 static uint8_t traceCurBlock = 0;\r
 static uint8_t traceCurKey = 0;\r
@@ -291,17 +287,89 @@ uint32_t ks3;
 \r
 uint32_t uid;     // serial number\r
 uint32_t nt;      // tag challenge\r
+uint32_t nt_par; \r
 uint32_t nr_enc;  // encrypted reader challenge\r
 uint32_t ar_enc;  // encrypted reader response\r
+uint32_t nr_ar_par; \r
 uint32_t at_enc;  // encrypted tag response\r
+uint32_t at_par; \r
 \r
-int mfTraceInit(uint8_t *tuid, uint8_t *atqa, uint8_t sak) {\r
+int isTraceCardEmpty(void) {\r
+       return ((traceCard[0] == 0) && (traceCard[1] == 0) && (traceCard[2] == 0) && (traceCard[3] == 0));\r
+}\r
 \r
-       if (traceCrypto1) crypto1_destroy(traceCrypto1);\r
-       traceCrypto1 = NULL;\r
+int isBlockEmpty(int blockN) {\r
+       for (int i = 0; i < 16; i++) \r
+               if (traceCard[blockN * 16 + i] != 0) return 0;\r
 \r
+       return 1;\r
+}\r
+\r
+int isBlockTrailer(int blockN) {\r
+ return ((blockN & 0x03) == 0x03);\r
+}\r
+\r
+int loadTraceCard(uint8_t *tuid) {\r
+       FILE * f;\r
+       char buf[64];\r
+       uint8_t buf8[64];\r
+       int i, blockNum;\r
+       \r
+       if (!isTraceCardEmpty()) saveTraceCard();\r
        memset(traceCard, 0x00, 4096);\r
        memcpy(traceCard, tuid + 3, 4);\r
+       FillFileNameByUID(traceFileName, tuid, ".eml", 7);\r
+\r
+       f = fopen(traceFileName, "r");\r
+       if (!f) return 1;\r
+       \r
+       blockNum = 0;\r
+       while(!feof(f)){\r
+               memset(buf, 0, sizeof(buf));\r
+               if (fgets(buf, sizeof(buf), f) == NULL) {\r
+      PrintAndLog("File reading error.");\r
+                       return 2;\r
+    }\r
+\r
+               if (strlen(buf) < 32){\r
+                       if (feof(f)) break;\r
+                       PrintAndLog("File content error. Block data must include 32 HEX symbols");\r
+                       return 2;\r
+               }\r
+               for (i = 0; i < 32; i += 2)\r
+                       sscanf(&buf[i], "%02x", (unsigned int *)&buf8[i / 2]);\r
+\r
+               memcpy(traceCard + blockNum * 16, buf8, 16);\r
+\r
+               blockNum++;\r
+       }\r
+       fclose(f);\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
+       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
+\r
+       return 0;\r
+}\r
+\r
+int mfTraceInit(uint8_t *tuid, uint8_t *atqa, uint8_t sak, bool wantSaveToEmlFile) {\r
+\r
+       if (traceCrypto1) crypto1_destroy(traceCrypto1);\r
+       traceCrypto1 = NULL;\r
+\r
+       if (wantSaveToEmlFile) loadTraceCard(tuid);\r
        traceCard[4] = traceCard[0] ^ traceCard[1] ^ traceCard[2] ^ traceCard[3];\r
        traceCard[5] = sak;\r
        memcpy(&traceCard[6], atqa, 2);\r
@@ -331,7 +399,7 @@ void mf_crypto1_decrypt(struct Crypto1State *pcs, uint8_t *data, int len, bool i
 }\r
 \r
 \r
-int mfTraceDecode(uint8_t *data_src, int len) {\r
+int mfTraceDecode(uint8_t *data_src, int len, uint32_t parity, bool wantSaveToEmlFile) {\r
        uint8_t data[64];\r
 \r
        if (traceState == TRACE_ERROR) return 1;\r
@@ -349,7 +417,13 @@ int mfTraceDecode(uint8_t *data_src, int len) {
        \r
        switch (traceState) {\r
        case TRACE_IDLE: \r
-               // TODO: check packet crc16!\r
+               // check packet crc16!\r
+               if ((len >= 4) && (!CheckCrc14443(CRC_14443_A, data, len))) {\r
+                       PrintAndLog("dec> CRC ERROR!!!");\r
+                       AddLogLine(logHexFileName, "dec> ", "CRC ERROR!!!"); \r
+                       traceState = TRACE_ERROR;  // do not decrypt the next commands\r
+                       return 1;\r
+               }\r
                \r
                // AUTHENTICATION\r
                if ((len ==4) && ((data[0] == 0x60) || (data[0] == 0x61))) {\r
@@ -386,7 +460,12 @@ int mfTraceDecode(uint8_t *data_src, int len) {
                if (len == 18) {\r
                        traceState = TRACE_IDLE;\r
 \r
-                       memcpy(traceCard + traceCurBlock * 16, data, 16);\r
+                       if (isBlockTrailer(traceCurBlock)) {\r
+                               memcpy(traceCard + traceCurBlock * 16 + 6, data + 6, 4);\r
+                       } else {\r
+                               memcpy(traceCard + traceCurBlock * 16, data, 16);\r
+                       }\r
+                       if (wantSaveToEmlFile) saveTraceCard();\r
                        return 0;\r
                } else {\r
                        traceState = TRACE_ERROR;\r
@@ -410,6 +489,7 @@ int mfTraceDecode(uint8_t *data_src, int len) {
                        traceState = TRACE_IDLE;\r
 \r
                        memcpy(traceCard + traceCurBlock * 16, data, 16);\r
+                       if (wantSaveToEmlFile) saveTraceCard();\r
                        return 0;\r
                } else {\r
                        traceState = TRACE_ERROR;\r
@@ -422,6 +502,7 @@ int mfTraceDecode(uint8_t *data_src, int len) {
                        traceState = TRACE_AUTH2;\r
 \r
                        nt = bytes_to_num(data, 4);\r
+                       nt_par = parity;\r
                        return 0;\r
                } else {\r
                        traceState = TRACE_ERROR;\r
@@ -435,6 +516,7 @@ int mfTraceDecode(uint8_t *data_src, int len) {
 \r
                        nr_enc = bytes_to_num(data, 4);\r
                        ar_enc = bytes_to_num(data + 4, 4);\r
+                       nr_ar_par = parity;\r
                        return 0;\r
                } else {\r
                        traceState = TRACE_ERROR;\r
@@ -447,6 +529,7 @@ int mfTraceDecode(uint8_t *data_src, int len) {
                        traceState = TRACE_IDLE;\r
 \r
                        at_enc = bytes_to_num(data, 4);\r
+                       at_par = parity;\r
                        \r
                        //  decode key here)\r
                        if (!traceCrypto1) {\r
@@ -470,11 +553,15 @@ int mfTraceDecode(uint8_t *data_src, int len) {
                        printf("key> %x%x\n", (unsigned int)((lfsr & 0xFFFFFFFF00000000) >> 32), (unsigned int)(lfsr & 0xFFFFFFFF));\r
                        AddLogUint64(logHexFileName, "key> ", lfsr); \r
                        \r
+                       int blockShift = ((traceCurBlock & 0xFC) + 3) * 16;\r
+                       if (isBlockEmpty((traceCurBlock & 0xFC) + 3)) memcpy(traceCard + blockShift + 6, trailerAccessBytes, 4);\r
+                       \r
                        if (traceCurKey) {\r
-                               num_to_bytes(lfsr, 6, traceCard + traceCurBlock * 16 + 10);\r
+                               num_to_bytes(lfsr, 6, traceCard + blockShift + 10);\r
                        } else {\r
-                               num_to_bytes(lfsr, 6, traceCard + traceCurBlock * 16);\r
+                               num_to_bytes(lfsr, 6, traceCard + blockShift);\r
                        }\r
+                       if (wantSaveToEmlFile) saveTraceCard();\r
 \r
                        if (traceCrypto1) {\r
                                crypto1_destroy(traceCrypto1);\r
Impressum, Datenschutz