]> git.zerfleddert.de Git - proxmark3-svn/blobdiff - client/cmdhfmf.c
Add Mifare Classic EV1 set load modulation command
[proxmark3-svn] / client / cmdhfmf.c
index 20bb59298630cebabff7bb686253830b7e714584..13cbee68587b9c321b50fa645d2ea9704b47192b 100644 (file)
@@ -340,7 +340,7 @@ int CmdHF14AMfRdBl(const char *Cmd) {
        SendCommand(&c);\r
 \r
        UsbCommand resp;\r
-       if (WaitForResponseTimeout(CMD_ACK,&resp,1500)) {\r
+       if (WaitForResponseTimeout(CMD_ACK, &resp, 1500)) {\r
                uint8_t isOK  = resp.arg[0] & 0xff;\r
                uint8_t *data = resp.d.asBytes;\r
 \r
@@ -470,10 +470,9 @@ int CmdHF14AMfDump(const char *Cmd) {
        size_t bytes_read;\r
        for (sectorNo=0; sectorNo<numSectors; sectorNo++) {\r
                bytes_read = fread( keyA[sectorNo], 1, 6, fin );\r
-               if ( bytes_read == 0) {\r
+               if ( bytes_read != 6) {\r
                        PrintAndLog("File reading error.");\r
                        fclose(fin);\r
-                       fin = NULL;\r
                        return 2;\r
                }\r
        }\r
@@ -481,22 +480,21 @@ int CmdHF14AMfDump(const char *Cmd) {
        // Read keys B from file\r
        for (sectorNo=0; sectorNo<numSectors; sectorNo++) {\r
                bytes_read = fread( keyB[sectorNo], 1, 6, fin );\r
-               if ( bytes_read == 0) {\r
+               if ( bytes_read != 6) {\r
                        PrintAndLog("File reading error.");\r
                        fclose(fin);\r
-                       fin = NULL;\r
                        return 2;\r
                }\r
        }\r
        \r
        fclose(fin);\r
-       fin = NULL;\r
                        \r
        PrintAndLog("|-----------------------------------------|");\r
        PrintAndLog("|------ Reading sector access bits...-----|");\r
        PrintAndLog("|-----------------------------------------|");\r
-       \r
+       uint8_t tries = 0;\r
        for (sectorNo = 0; sectorNo < numSectors; sectorNo++) {\r
+               for (tries = 0; tries < 3; tries++) {           \r
                UsbCommand c = {CMD_MIFARE_READBL, {FirstBlockOfSector(sectorNo) + NumBlocksPerSector(sectorNo) - 1, 0, 0}};\r
                memcpy(c.d.asBytes, keyA[sectorNo], 6);\r
                clearCommandBuffer();\r
@@ -510,7 +508,8 @@ int CmdHF14AMfDump(const char *Cmd) {
                                rights[sectorNo][1] = ((data[7] & 0x20)>>3) | ((data[8] & 0x2)<<0) | ((data[8] & 0x20)>>5); // C1C2C3 for data area 1\r
                                rights[sectorNo][2] = ((data[7] & 0x40)>>4) | ((data[8] & 0x4)>>1) | ((data[8] & 0x40)>>6); // C1C2C3 for data area 2\r
                                rights[sectorNo][3] = ((data[7] & 0x80)>>5) | ((data[8] & 0x8)>>2) | ((data[8] & 0x80)>>7); // C1C2C3 for sector trailer\r
-                       } else {\r
+                                       break;\r
+                               } else if (tries == 2) { // on last try set defaults\r
                                PrintAndLog("Could not get access rights for sector %2d. Trying with defaults...", sectorNo);\r
                                rights[sectorNo][0] = rights[sectorNo][1] = rights[sectorNo][2] = 0x00;\r
                                rights[sectorNo][3] = 0x01;\r
@@ -521,6 +520,7 @@ int CmdHF14AMfDump(const char *Cmd) {
                        rights[sectorNo][3] = 0x01;\r
                }\r
        }\r
+       }\r
        \r
        PrintAndLog("|-----------------------------------------|");\r
        PrintAndLog("|----- Dumping all blocks to file... -----|");\r
@@ -530,7 +530,7 @@ int CmdHF14AMfDump(const char *Cmd) {
        for (sectorNo = 0; isOK && sectorNo < numSectors; sectorNo++) {\r
                for (blockNo = 0; isOK && blockNo < NumBlocksPerSector(sectorNo); blockNo++) {\r
                        bool received = false;\r
-                       \r
+                       for (tries = 0; tries < 3; tries++) {                   \r
                        if (blockNo == NumBlocksPerSector(sectorNo) - 1) {              // sector trailer. At least the Access Conditions can always be read with key A. \r
                                UsbCommand c = {CMD_MIFARE_READBL, {FirstBlockOfSector(sectorNo) + blockNo, 0, 0}};\r
                                memcpy(c.d.asBytes, keyA[sectorNo], 6);\r
@@ -547,12 +547,18 @@ int CmdHF14AMfDump(const char *Cmd) {
                                } else if (rights[sectorNo][data_area] == 0x07) {                                                                               // no key would work\r
                                        isOK = false;\r
                                        PrintAndLog("Access rights do not allow reading of sector %2d block %3d", sectorNo, blockNo);\r
+                                               tries = 2;\r
                                } else {                                                                                                                                                                // key A would work\r
                                        UsbCommand c = {CMD_MIFARE_READBL, {FirstBlockOfSector(sectorNo) + blockNo, 0, 0}};\r
                                        memcpy(c.d.asBytes, keyA[sectorNo], 6);\r
                                        clearCommandBuffer();\r
                                        SendCommand(&c);\r
                                        received = WaitForResponseTimeout(CMD_ACK,&resp,1500);\r
+                                       }\r
+                               }\r
+                               if (received) {\r
+                                       isOK  = resp.arg[0] & 0xff;\r
+                                       if (isOK) break;\r
                                }\r
                        }\r
 \r
@@ -597,7 +603,6 @@ int CmdHF14AMfDump(const char *Cmd) {
                uint16_t numblocks = FirstBlockOfSector(numSectors - 1) + NumBlocksPerSector(numSectors - 1);\r
                fwrite(carddata, 1, 16*numblocks, fout);\r
                fclose(fout);\r
-               fout = NULL;            \r
                PrintAndLog("Dumped %d blocks (%d bytes) to file dumpdata.bin", numblocks, 16*numblocks);\r
        }\r
                \r
@@ -643,20 +648,18 @@ int CmdHF14AMfRestore(const char *Cmd) {
        size_t bytes_read;\r
        for (sectorNo = 0; sectorNo < numSectors; sectorNo++) {\r
                bytes_read = fread( keyA[sectorNo], 1, 6, fkeys );\r
-               if ( bytes_read == 0) {\r
+               if ( bytes_read != 6) {\r
                        PrintAndLog("File reading error (dumpkeys.bin).");\r
                        fclose(fkeys);\r
-                       fkeys = NULL;\r
                        return 2;\r
                }\r
        }\r
 \r
        for (sectorNo = 0; sectorNo < numSectors; sectorNo++) {\r
                bytes_read = fread( keyB[sectorNo], 1, 6, fkeys );\r
-               if ( bytes_read == 0) {\r
+               if ( bytes_read != 6) {\r
                        PrintAndLog("File reading error (dumpkeys.bin).");\r
                        fclose(fkeys);\r
-                       fkeys = NULL;\r
                        return 2;\r
                }\r
        }\r
@@ -674,7 +677,7 @@ int CmdHF14AMfRestore(const char *Cmd) {
                        UsbCommand c = {CMD_MIFARE_WRITEBL, {FirstBlockOfSector(sectorNo) + blockNo, keyType, 0}};\r
                        memcpy(c.d.asBytes, key, 6);                    \r
                        bytes_read = fread(bldata, 1, 16, fdump);\r
-                       if ( bytes_read == 0) {\r
+                       if ( bytes_read != 16) {\r
                                PrintAndLog("File reading error (dumpdata.bin).");\r
                                fclose(fdump);\r
                                fdump = NULL;                           \r
@@ -713,13 +716,12 @@ int CmdHF14AMfRestore(const char *Cmd) {
        }\r
        \r
        fclose(fdump);\r
-       fdump = NULL;   \r
        return 0;\r
 }\r
 \r
 int CmdHF14AMfNested(const char *Cmd) {\r
        int i, j, res, iterations;\r
-       sector *e_sector = NULL;\r
+       sector_t *e_sector = NULL;\r
        uint8_t blockNo = 0;\r
        uint8_t keyType = 0;\r
        uint8_t trgBlockNo = 0;\r
@@ -789,7 +791,7 @@ int CmdHF14AMfNested(const char *Cmd) {
                switch (isOK) {\r
                        case -1 : PrintAndLog("Error: No response from Proxmark.\n"); break;\r
                        case -2 : PrintAndLog("Button pressed. Aborted.\n"); break;\r
-                       case -3 : PrintAndLog("Tag isn't vulnerable to Nested Attack (its random number generator is not predictable).\n"); break;\r
+                       case -3 : PrintAndLog("Tag isn't vulnerable to Nested Attack (random number generator is not predictable).\n"); break;\r
                        case -4 : PrintAndLog("No valid key found"); break;\r
                        case -5 : \r
                                key64 = bytes_to_num(keyBlock, 6);\r
@@ -821,7 +823,7 @@ int CmdHF14AMfNested(const char *Cmd) {
                time_t start, end;\r
                time(&start);\r
                \r
-               e_sector = calloc(SectorsCnt, sizeof(sector));\r
+               e_sector = calloc(SectorsCnt, sizeof(sector_t));\r
                if (e_sector == NULL) return 1;\r
                \r
                //test current key and additional standard keys first\r
@@ -1081,7 +1083,7 @@ int CmdHF14AMfChk(const char *Cmd) {
        uint8_t *keyBlock = NULL, *p;\r
        uint8_t stKeyBlock = 20;\r
        \r
-       sector *e_sector = NULL;\r
+       sector_t *e_sector = NULL;\r
        \r
        int i, res;\r
        int     keycnt = 0;\r
@@ -1228,7 +1230,7 @@ int CmdHF14AMfChk(const char *Cmd) {
        }\r
        \r
        // initialize storage for found keys\r
-       e_sector = calloc(SectorsCnt, sizeof(sector));\r
+       e_sector = calloc(SectorsCnt, sizeof(sector_t));\r
        if (e_sector == NULL) {\r
                free(keyBlock);\r
                return 1;\r
@@ -1360,13 +1362,13 @@ int CmdHF14AMfChk(const char *Cmd) {
        return 0;\r
 }\r
 \r
-sector *k_sector = NULL;\r
+sector_t *k_sector = NULL;\r
 uint8_t k_sectorsCount = 16;\r
 static void emptySectorTable(){\r
 \r
        // initialize storage for found keys\r
        if (k_sector == NULL)\r
-               k_sector = calloc(k_sectorsCount, sizeof(sector));\r
+               k_sector = calloc(k_sectorsCount, sizeof(sector_t));\r
        if (k_sector == NULL) \r
                return;\r
                \r
@@ -1584,7 +1586,7 @@ int CmdHF14AMfSniff(const char *Cmd){
 \r
                        if (res == 1) {                                                         // there is (more) data to be transferred\r
                                if (pckNum == 0) {                                              // first packet, (re)allocate necessary buffer\r
-                                       if (traceLen > bufsize) {\r
+                                       if (traceLen > bufsize || buf == NULL) {\r
                                                uint8_t *p;\r
                                                if (buf == NULL)                                // not yet allocated\r
                                                        p = malloc(traceLen);\r
@@ -1718,7 +1720,7 @@ int CmdHF14AMfKeyBrute(const char *Cmd) {
        return 0;       \r
 }\r
 \r
-void printKeyTable( uint8_t sectorscnt, sector *e_sector ){\r
+void printKeyTable( uint8_t sectorscnt, sector_t *e_sector ){\r
        PrintAndLog("|---|----------------|---|----------------|---|");\r
        PrintAndLog("|sec|key A           |res|key B           |res|");\r
        PrintAndLog("|---|----------------|---|----------------|---|");\r
@@ -2449,6 +2451,43 @@ int CmdHf14MfDecryptBytes(const char *Cmd){
        return tryDecryptWord( nt, ar_enc, at_enc, data, len);\r
 }\r
 \r
+int CmdHf14AMfSetMod(const char *Cmd) {\r
+       uint8_t key[6] = {0, 0, 0, 0, 0, 0};\r
+       uint8_t mod = 2;\r
+\r
+       char ctmp = param_getchar(Cmd, 0);\r
+       if (ctmp == '0') {\r
+               mod = 0;\r
+       } else if (ctmp == '1') {\r
+               mod = 1;\r
+       }\r
+       int gethexfail = param_gethex(Cmd, 1, key, 12);\r
+       if (mod == 2 || gethexfail) {\r
+               PrintAndLog("Sets the load modulation strength of a MIFARE Classic EV1 card.");\r
+               PrintAndLog("Usage: hf mf setmod <0/1> <block 0 key A>");\r
+               PrintAndLog("       0 = normal modulation");\r
+               PrintAndLog("       1 = strong modulation (default)");\r
+               return 1;\r
+       }\r
+\r
+       UsbCommand c = {CMD_MIFARE_SETMOD, {mod, 0, 0}};\r
+       memcpy(c.d.asBytes, key, 6);\r
+       clearCommandBuffer();\r
+       SendCommand(&c);\r
+\r
+       UsbCommand resp;\r
+       if (WaitForResponseTimeout(CMD_ACK, &resp, 1500)) {\r
+               uint8_t ok = resp.arg[0] & 0xff;\r
+               PrintAndLog("isOk:%02x", ok);\r
+               if (!ok) {\r
+                       PrintAndLog("Failed.");\r
+               }\r
+       } else {\r
+               PrintAndLog("Command execute timeout");\r
+       }\r
+       return 0;\r
+}\r
+\r
 static command_t CommandTable[] = {\r
        {"help",                CmdHelp,                                1, "This help"},\r
        {"dbg",                 CmdHF14AMfDbg,                  0, "Set default debug mode"},\r
@@ -2478,6 +2517,7 @@ static command_t CommandTable[] = {
        {"cload",               CmdHF14AMfCLoad,                0, "Load dump into magic Chinese card"},\r
        {"csave",               CmdHF14AMfCSave,                0, "Save dump from magic Chinese card into file or emulator"},\r
        {"decrypt",             CmdHf14MfDecryptBytes,  1, "[nt] [ar_enc] [at_enc] [data] - to decrypt snoop or trace"},\r
+       {"setmod",              CmdHf14AMfSetMod,               0, "Set MIFARE Classic EV1 load modulation strength"},\r
        {NULL, NULL, 0, NULL}\r
 };\r
 \r
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