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Merge pull request #4 from gcohen55/ubuntu_makefile
[proxmark3-svn] / client / cmdhfmf.c
diff --git a/client/cmdhfmf.c b/client/cmdhfmf.c
index f225359d7d8801cfb4e053f0d47bce73e1f831e1..83310a54f0ae62ed625bc1ac234126236c573341 100644 (file)
--- a/client/cmdhfmf.c
+++ b/client/cmdhfmf.c
@@ -9,6 +9,7 @@
 //-----------------------------------------------------------------------------\r
 \r
 #include "cmdhfmf.h"\r
 //-----------------------------------------------------------------------------\r
 \r
 #include "cmdhfmf.h"\r
+#include "nonce2key/nonce2key.h"\r
 \r
 static int CmdHelp(const char *Cmd);\r
 \r
 \r
 static int CmdHelp(const char *Cmd);\r
 \r
@@ -17,15 +18,14 @@ int CmdHF14AMifare(const char *Cmd)
        uint32_t uid = 0;\r
        uint32_t nt = 0, nr = 0;\r
        uint64_t par_list = 0, ks_list = 0, r_key = 0;\r
        uint32_t uid = 0;\r
        uint32_t nt = 0, nr = 0;\r
        uint64_t par_list = 0, ks_list = 0, r_key = 0;\r
-       uint8_t isOK = 0;\r
-       uint8_t keyBlock[8] = {0};\r
+       int16_t isOK = 0;\r
 \r
        UsbCommand c = {CMD_READER_MIFARE, {true, 0, 0}};\r
 \r
        // message\r
        printf("-------------------------------------------------------------------------\n");\r
        printf("Executing command. Expected execution time: 25sec on average  :-)\n");\r
 \r
        UsbCommand c = {CMD_READER_MIFARE, {true, 0, 0}};\r
 \r
        // message\r
        printf("-------------------------------------------------------------------------\n");\r
        printf("Executing command. Expected execution time: 25sec on average  :-)\n");\r
-       printf("Press the key on the proxmark3 device to abort both proxmark3 and client.\n");\r
+       printf("Press button on the proxmark3 device to abort both proxmark3 and client.\n");\r
        printf("-------------------------------------------------------------------------\n");\r
 \r
        \r
        printf("-------------------------------------------------------------------------\n");\r
 \r
        \r
@@ -48,14 +48,19 @@ start:
                \r
                UsbCommand resp;\r
                if (WaitForResponseTimeout(CMD_ACK,&resp,1000)) {\r
                \r
                UsbCommand resp;\r
                if (WaitForResponseTimeout(CMD_ACK,&resp,1000)) {\r
-                       isOK  = resp.arg[0] & 0xff;\r
+                       isOK  = resp.arg[0];\r
                        uid = (uint32_t)bytes_to_num(resp.d.asBytes +  0, 4);\r
                        nt =  (uint32_t)bytes_to_num(resp.d.asBytes +  4, 4);\r
                        par_list = bytes_to_num(resp.d.asBytes +  8, 8);\r
                        ks_list = bytes_to_num(resp.d.asBytes +  16, 8);\r
                        nr = bytes_to_num(resp.d.asBytes + 24, 4);\r
                        printf("\n\n");\r
                        uid = (uint32_t)bytes_to_num(resp.d.asBytes +  0, 4);\r
                        nt =  (uint32_t)bytes_to_num(resp.d.asBytes +  4, 4);\r
                        par_list = bytes_to_num(resp.d.asBytes +  8, 8);\r
                        ks_list = bytes_to_num(resp.d.asBytes +  16, 8);\r
                        nr = bytes_to_num(resp.d.asBytes + 24, 4);\r
                        printf("\n\n");\r
-                       if (!isOK) PrintAndLog("Proxmark can't get statistic info. Execution aborted.\n");\r
+                       switch (isOK) {\r
+                               case -1 : PrintAndLog("Button pressed. Aborted.\n"); break;\r
+                               case -2 : PrintAndLog("Card is not vulnerable to Darkside attack (doesn't send NACK on authentication requests).\n"); break;\r
+                               case -3 : PrintAndLog("Card is not vulnerable to Darkside attack (its random number generator is not predictable).\n"); break;\r
+                               default: ;\r
+                       }\r
                        break;\r
                }\r
        }       \r
                        break;\r
                }\r
        }       \r
@@ -69,22 +74,13 @@ start:
        if (nonce2key(uid, nt, nr, par_list, ks_list, &r_key)) {\r
                isOK = 2;\r
                PrintAndLog("Key not found (lfsr_common_prefix list is null). Nt=%08x", nt);    \r
        if (nonce2key(uid, nt, nr, par_list, ks_list, &r_key)) {\r
                isOK = 2;\r
                PrintAndLog("Key not found (lfsr_common_prefix list is null). Nt=%08x", nt);    \r
-       } else {\r
-               printf("------------------------------------------------------------------\n");\r
-               PrintAndLog("Key found:%012"llx" \n", r_key);\r
-\r
-               num_to_bytes(r_key, 6, keyBlock);\r
-               isOK = mfCheckKeys(0, 0, 1, keyBlock, &r_key);\r
-       }\r
-       \r
-       if (!isOK) \r
-               PrintAndLog("Found valid key:%012"llx, r_key);\r
-       else\r
-       {\r
-               if (isOK != 2) PrintAndLog("Found invalid key. ");      \r
                PrintAndLog("Failing is expected to happen in 25%% of all cases. Trying again with a different reader nonce...");\r
                c.arg[0] = false;\r
                goto start;\r
                PrintAndLog("Failing is expected to happen in 25%% of all cases. Trying again with a different reader nonce...");\r
                c.arg[0] = false;\r
                goto start;\r
+       } else {\r
+               isOK = 0;\r
+               printf("------------------------------------------------------------------\n");\r
+               PrintAndLog("Found valid key:%012"llx" \n", r_key);\r
        }\r
        \r
        PrintAndLog("");\r
        }\r
        \r
        PrintAndLog("");\r
@@ -434,7 +430,7 @@ int CmdHF14AMfRestore(const char *Cmd)
 {\r
        uint8_t sectorNo,blockNo;\r
        uint8_t keyType = 0;\r
 {\r
        uint8_t sectorNo,blockNo;\r
        uint8_t keyType = 0;\r
-       uint8_t key[6] = {0xFF};\r
+       uint8_t key[6] = {0xFF,0xFF,0xFF,0xFF,0xFF,0xFF};\r
        uint8_t bldata[16] = {0x00};\r
        uint8_t keyA[40][6];\r
        uint8_t keyB[40][6];\r
        uint8_t bldata[16] = {0x00};\r
        uint8_t keyA[40][6];\r
        uint8_t keyB[40][6];\r
@@ -547,7 +543,7 @@ int CmdHF14AMfNested(const char *Cmd)
        uint8_t trgKeyType = 0;\r
        uint8_t SectorsCnt = 0;\r
        uint8_t key[6] = {0, 0, 0, 0, 0, 0};\r
        uint8_t trgKeyType = 0;\r
        uint8_t SectorsCnt = 0;\r
        uint8_t key[6] = {0, 0, 0, 0, 0, 0};\r
-       uint8_t keyBlock[13*6];\r
+       uint8_t keyBlock[14*6];\r
        uint64_t key64 = 0;\r
        bool transferToEml = false;\r
        \r
        uint64_t key64 = 0;\r
        bool transferToEml = false;\r
        \r
@@ -622,8 +618,14 @@ int CmdHF14AMfNested(const char *Cmd)
        \r
        if (cmdp == 'o') {\r
                PrintAndLog("--target block no:%3d, target key type:%c ", trgBlockNo, trgKeyType?'B':'A');\r
        \r
        if (cmdp == 'o') {\r
                PrintAndLog("--target block no:%3d, target key type:%c ", trgBlockNo, trgKeyType?'B':'A');\r
-               if (mfnested(blockNo, keyType, key, trgBlockNo, trgKeyType, keyBlock, true)) {\r
-                       PrintAndLog("Nested error.");\r
+               int16_t isOK = mfnested(blockNo, keyType, key, trgBlockNo, trgKeyType, keyBlock, true);\r
+               if (isOK) {\r
+                       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 (random numbers are not predictable).\n"); break;\r
+                               default : PrintAndLog("Unknown Error.\n");\r
+                       }\r
                        return 2;\r
                }\r
                key64 = bytes_to_num(keyBlock, 6);\r
                        return 2;\r
                }\r
                key64 = bytes_to_num(keyBlock, 6);\r
@@ -678,7 +680,7 @@ int CmdHF14AMfNested(const char *Cmd)
                        for (j = 0; j < 2; j++) {\r
                                if (e_sector[i].foundKey[j]) continue;\r
                                \r
                        for (j = 0; j < 2; j++) {\r
                                if (e_sector[i].foundKey[j]) continue;\r
                                \r
-                               res = mfCheckKeys(FirstBlockOfSector(i), j, 6, keyBlock, &key64);\r
+                               res = mfCheckKeys(FirstBlockOfSector(i), j, true, 6, keyBlock, &key64);\r
                                \r
                                if (!res) {\r
                                        e_sector[i].Key[j] = key64;\r
                                \r
                                if (!res) {\r
                                        e_sector[i].Key[j] = key64;\r
@@ -696,11 +698,17 @@ int CmdHF14AMfNested(const char *Cmd)
                                for (trgKeyType = 0; trgKeyType < 2; trgKeyType++) { \r
                                        if (e_sector[sectorNo].foundKey[trgKeyType]) continue;\r
                                        PrintAndLog("-----------------------------------------------");\r
                                for (trgKeyType = 0; trgKeyType < 2; trgKeyType++) { \r
                                        if (e_sector[sectorNo].foundKey[trgKeyType]) continue;\r
                                        PrintAndLog("-----------------------------------------------");\r
-                                       if(mfnested(blockNo, keyType, key, FirstBlockOfSector(sectorNo), trgKeyType, keyBlock, calibrate)) {\r
-                                               PrintAndLog("Nested error.\n");\r
+                                       int16_t isOK = mfnested(blockNo, keyType, key, FirstBlockOfSector(sectorNo), trgKeyType, keyBlock, calibrate);\r
+                                       if(isOK) {\r
+                                               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 (random numbers are not predictable).\n"); break;\r
+                                                       default : PrintAndLog("Unknown Error.\n");\r
+                                               }\r
                                                free(e_sector);\r
                                                free(e_sector);\r
-                                               return 2;                                       }\r
-                                       else {\r
+                                               return 2;\r
+                                       } else {\r
                                                calibrate = false;\r
                                        }\r
                                        \r
                                                calibrate = false;\r
                                        }\r
                                        \r
@@ -781,8 +789,8 @@ int CmdHF14AMfChk(const char *Cmd)
                PrintAndLog("Usage:  hf mf chk <block number>|<*card memory> <key type (A/B/?)> [t|d] [<key (12 hex symbols)>] [<dic (*.dic)>]");\r
                PrintAndLog("          * - all sectors");\r
                PrintAndLog("card memory - 0 - MINI(320 bytes), 1 - 1K, 2 - 2K, 4 - 4K, <other> - 1K");\r
                PrintAndLog("Usage:  hf mf chk <block number>|<*card memory> <key type (A/B/?)> [t|d] [<key (12 hex symbols)>] [<dic (*.dic)>]");\r
                PrintAndLog("          * - all sectors");\r
                PrintAndLog("card memory - 0 - MINI(320 bytes), 1 - 1K, 2 - 2K, 4 - 4K, <other> - 1K");\r
-               PrintAndLog("d - write keys to binary file\n");\r
-               PrintAndLog("t - write keys to emulator memory");\r
+               PrintAndLog("d - write keys to binary file");\r
+               PrintAndLog("t - write keys to emulator memory\n");\r
                PrintAndLog("      sample: hf mf chk 0 A 1234567890ab keys.dic");\r
                PrintAndLog("              hf mf chk *1 ? t");\r
                PrintAndLog("              hf mf chk *1 ? d");\r
                PrintAndLog("      sample: hf mf chk 0 A 1234567890ab keys.dic");\r
                PrintAndLog("              hf mf chk *1 ? t");\r
                PrintAndLog("              hf mf chk *1 ? d");\r
@@ -956,7 +964,7 @@ int CmdHF14AMfChk(const char *Cmd)
                        uint32_t max_keys = keycnt>USB_CMD_DATA_SIZE/6?USB_CMD_DATA_SIZE/6:keycnt;\r
                        for (uint32_t c = 0; c < keycnt; c+=max_keys) {\r
                                uint32_t size = keycnt-c>max_keys?max_keys:keycnt-c;\r
                        uint32_t max_keys = keycnt>USB_CMD_DATA_SIZE/6?USB_CMD_DATA_SIZE/6:keycnt;\r
                        for (uint32_t c = 0; c < keycnt; c+=max_keys) {\r
                                uint32_t size = keycnt-c>max_keys?max_keys:keycnt-c;\r
-                               res = mfCheckKeys(b, t, size, &keyBlock[6*c], &key64);\r
+                               res = mfCheckKeys(b, t, true, size, &keyBlock[6*c], &key64);\r
                                if (res != 1) {\r
                                        if (!res) {\r
                                                PrintAndLog("Found valid key:[%012"llx"]",key64);\r
                                if (res != 1) {\r
                                        if (!res) {\r
                                                PrintAndLog("Found valid key:[%012"llx"]",key64);\r
@@ -1011,8 +1019,10 @@ int CmdHF14AMf1kSim(const char *Cmd)
        uint8_t uid[7] = {0, 0, 0, 0, 0, 0, 0};\r
        uint8_t exitAfterNReads = 0;\r
        uint8_t flags = 0;\r
        uint8_t uid[7] = {0, 0, 0, 0, 0, 0, 0};\r
        uint8_t exitAfterNReads = 0;\r
        uint8_t flags = 0;\r
-\r
+       \r
        uint8_t cmdp = param_getchar(Cmd, 0);\r
        uint8_t cmdp = param_getchar(Cmd, 0);\r
+\r
+       clearCommandBuffer();\r
        \r
        if (cmdp == 'h' || cmdp == 'H') {\r
                PrintAndLog("Usage:  hf mf sim  u <uid (8 hex symbols)> n <numreads> i x");\r
        \r
        if (cmdp == 'h' || cmdp == 'H') {\r
                PrintAndLog("Usage:  hf mf sim  u <uid (8 hex symbols)> n <numreads> i x");\r
@@ -1063,15 +1073,42 @@ int CmdHF14AMf1kSim(const char *Cmd)
        SendCommand(&c);\r
 \r
        if(flags & FLAG_INTERACTIVE)\r
        SendCommand(&c);\r
 \r
        if(flags & FLAG_INTERACTIVE)\r
-       {\r
-               UsbCommand resp;\r
+       {               \r
                PrintAndLog("Press pm3-button to abort simulation");\r
                PrintAndLog("Press pm3-button to abort simulation");\r
-               while(! WaitForResponseTimeout(CMD_ACK,&resp,1500)) {\r
-                       //We're waiting only 1.5 s at a time, otherwise we get the\r
-                       // annoying message about "Waiting for a response... "\r
+               \r
+               uint8_t data[40];\r
+               uint8_t key[6];\r
+\r
+               UsbCommand resp;                \r
+               while(!ukbhit() ){\r
+                       if ( WaitForResponseTimeout(CMD_ACK,&resp,1500) ) {\r
+                               if ( (resp.arg[0] & 0xffff) == CMD_SIMULATE_MIFARE_CARD ){\r
+                                       memset(data, 0x00, sizeof(data));\r
+                                       memset(key, 0x00, sizeof(key));\r
+                                       int len = (resp.arg[1] > sizeof(data)) ? sizeof(data) : resp.arg[1];\r
+                                       \r
+                                       memcpy(data, resp.d.asBytes, len);\r
+                                       \r
+                                       uint64_t corr_uid = 0;\r
+                                       if ( memcmp(data, "\x00\x00\x00\x00", 4) == 0 ) {\r
+                                               corr_uid = (data[3] << 24) | (data[2] << 16) | (data[1] << 8) | data[0];\r
+                                       }\r
+                                       else {\r
+                                               corr_uid |= (uint64_t)data[2] << 48; \r
+                                               corr_uid |= (uint64_t)data[1] << 40; \r
+                                               corr_uid |= (uint64_t)data[0] << 32;\r
+                                               corr_uid |= data[7] << 24;\r
+                                               corr_uid |= data[6] << 16;\r
+                                               corr_uid |= data[5] << 8;\r
+                                               corr_uid |= data[4];\r
+                                       }\r
+                                       tryMfk32(corr_uid, data, key);\r
+                                       //tryMfk64(corr_uid, data, key);\r
+                                       PrintAndLog("--");\r
+                               }\r
+                       }\r
                }\r
        }\r
                }\r
        }\r
-       \r
        return 0;\r
 }\r
 \r
        return 0;\r
 }\r
 \r
@@ -1200,7 +1237,7 @@ int CmdHF14AMfELoad(const char *Cmd)
 \r
        len = param_getstr(Cmd,nameParamNo,filename);\r
        \r
 \r
        len = param_getstr(Cmd,nameParamNo,filename);\r
        \r
-       if (len > FILE_PATH_SIZE) len = FILE_PATH_SIZE;\r
+       if (len > FILE_PATH_SIZE - 4) len = FILE_PATH_SIZE - 4;\r
 \r
        fnameptr += len;\r
 \r
 \r
        fnameptr += len;\r
 \r
@@ -1299,17 +1336,20 @@ int CmdHF14AMfESave(const char *Cmd)
 \r
        len = param_getstr(Cmd,nameParamNo,filename);\r
        \r
 \r
        len = param_getstr(Cmd,nameParamNo,filename);\r
        \r
-       if (len > FILE_PATH_SIZE) len = FILE_PATH_SIZE;\r
+       if (len > FILE_PATH_SIZE - 4) len = FILE_PATH_SIZE - 4;\r
        \r
        // user supplied filename?\r
        if (len < 1) {\r
                // get filename (UID from memory)\r
                if (mfEmlGetMem(buf, 0, 1)) {\r
                        PrintAndLog("Can\'t get UID from block: %d", 0);\r
        \r
        // user supplied filename?\r
        if (len < 1) {\r
                // get filename (UID from memory)\r
                if (mfEmlGetMem(buf, 0, 1)) {\r
                        PrintAndLog("Can\'t get UID from block: %d", 0);\r
-                       sprintf(filename, "dump.eml"); \r
+                       len = sprintf(fnameptr, "dump");\r
+                       fnameptr += len;\r
+               }\r
+               else {\r
+                       for (j = 0; j < 7; j++, fnameptr += 2)\r
+                               sprintf(fnameptr, "%02X", buf[j]);\r
                }\r
                }\r
-               for (j = 0; j < 7; j++, fnameptr += 2)\r
-                       sprintf(fnameptr, "%02X", buf[j]); \r
        } else {\r
                fnameptr += len;\r
        }\r
        } else {\r
                fnameptr += len;\r
        }\r
@@ -1433,27 +1473,60 @@ int CmdHF14AMfCSetUID(const char *Cmd)
        uint8_t wipeCard = 0;\r
        uint8_t uid[8] = {0x00};\r
        uint8_t oldUid[8] = {0x00};\r
        uint8_t wipeCard = 0;\r
        uint8_t uid[8] = {0x00};\r
        uint8_t oldUid[8] = {0x00};\r
+       uint8_t atqa[2] = {0x00};\r
+       uint8_t sak[1] = {0x00};\r
+       uint8_t atqaPresent = 1;\r
        int res;\r
        int res;\r
-\r
-       if (strlen(Cmd) < 1 || param_getchar(Cmd, 0) == 'h') {\r
-               PrintAndLog("Usage:  hf mf csetuid <UID 8 hex symbols> <w>");\r
-               PrintAndLog("sample:  hf mf csetuid 01020304 w");\r
-               PrintAndLog("Set UID for magic Chinese card (only works with!!!)");\r
-               PrintAndLog("If you want wipe card then add 'w' into command line. \n");\r
+       char ctmp;\r
+       int argi=0;\r
+\r
+       if (strlen(Cmd) < 1 || param_getchar(Cmd, argi) == 'h') {\r
+               PrintAndLog("Usage:  hf mf csetuid <UID 8 hex symbols> [ATQA 4 hex symbols SAK 2 hex symbols] [w]");\r
+               PrintAndLog("sample:  hf mf csetuid 01020304");\r
+               PrintAndLog("sample:  hf mf csetuid 01020304 0004 08 w");\r
+               PrintAndLog("Set UID, ATQA, and SAK for magic Chinese card (only works with such cards)");\r
+               PrintAndLog("If you also want to wipe the card then add 'w' at the end of the command line.");\r
                return 0;\r
                return 0;\r
-       }       \r
+       }\r
 \r
 \r
-       if (param_getchar(Cmd, 0) && param_gethex(Cmd, 0, uid, 8)) {\r
+       if (param_getchar(Cmd, argi) && param_gethex(Cmd, argi, uid, 8)) {\r
                PrintAndLog("UID must include 8 HEX symbols");\r
                return 1;\r
        }\r
                PrintAndLog("UID must include 8 HEX symbols");\r
                return 1;\r
        }\r
+       argi++;\r
+\r
+       ctmp = param_getchar(Cmd, argi);\r
+       if (ctmp == 'w' || ctmp == 'W') {\r
+               wipeCard = 1;\r
+               atqaPresent = 0;\r
+       }\r
+\r
+       if (atqaPresent) {\r
+               if (param_getchar(Cmd, argi)) {\r
+                       if (param_gethex(Cmd, argi, atqa, 4)) {\r
+                               PrintAndLog("ATQA must include 4 HEX symbols");\r
+                               return 1;\r
+                       }\r
+                       argi++;\r
+                       if (!param_getchar(Cmd, argi) || param_gethex(Cmd, argi, sak, 2)) {\r
+                               PrintAndLog("SAK must include 2 HEX symbols");\r
+                               return 1;\r
+                       }\r
+                       argi++;\r
+               } else\r
+                       atqaPresent = 0;\r
+       }\r
+\r
+       if(!wipeCard) {\r
+               ctmp = param_getchar(Cmd, argi);\r
+               if (ctmp == 'w' || ctmp == 'W') {\r
+                       wipeCard = 1;\r
+               }\r
+       }\r
 \r
 \r
-       char ctmp = param_getchar(Cmd, 1);\r
-       if (ctmp == 'w' || ctmp == 'W') wipeCard = 1;\r
-       \r
        PrintAndLog("--wipe card:%s  uid:%s", (wipeCard)?"YES":"NO", sprint_hex(uid, 4));\r
 \r
        PrintAndLog("--wipe card:%s  uid:%s", (wipeCard)?"YES":"NO", sprint_hex(uid, 4));\r
 \r
-       res = mfCSetUID(uid, oldUid, wipeCard);\r
+       res = mfCSetUID(uid, (atqaPresent)?atqa:NULL, (atqaPresent)?sak:NULL, oldUid, wipeCard);\r
        if (res) {\r
                        PrintAndLog("Can't set UID. error=%d", res);\r
                        return 1;\r
        if (res) {\r
                        PrintAndLog("Can't set UID. error=%d", res);\r
                        return 1;\r
@@ -1466,16 +1539,16 @@ int CmdHF14AMfCSetUID(const char *Cmd)
 \r
 int CmdHF14AMfCSetBlk(const char *Cmd)\r
 {\r
 \r
 int CmdHF14AMfCSetBlk(const char *Cmd)\r
 {\r
-       uint8_t uid[8] = {0x00};\r
        uint8_t memBlock[16] = {0x00};\r
        uint8_t blockNo = 0;\r
        uint8_t memBlock[16] = {0x00};\r
        uint8_t blockNo = 0;\r
+       bool wipeCard = FALSE;\r
        int res;\r
 \r
        if (strlen(Cmd) < 1 || param_getchar(Cmd, 0) == 'h') {\r
        int res;\r
 \r
        if (strlen(Cmd) < 1 || param_getchar(Cmd, 0) == 'h') {\r
-               PrintAndLog("Usage:  hf mf csetblk <block number> <block data (32 hex symbols)>");\r
+               PrintAndLog("Usage:  hf mf csetblk <block number> <block data (32 hex symbols)> [w]");\r
                PrintAndLog("sample:  hf mf csetblk 1 01020304050607080910111213141516");\r
                PrintAndLog("sample:  hf mf csetblk 1 01020304050607080910111213141516");\r
-               PrintAndLog("Set block data for magic Chinese card (only works with!!!)");\r
-               PrintAndLog("If you want wipe card then add 'w' into command line. \n");\r
+               PrintAndLog("Set block data for magic Chinese card (only works with such cards)");\r
+               PrintAndLog("If you also want wipe the card then add 'w' at the end of the command line");\r
                return 0;\r
        }       \r
 \r
                return 0;\r
        }       \r
 \r
@@ -1486,14 +1559,15 @@ int CmdHF14AMfCSetBlk(const char *Cmd)
                return 1;\r
        }\r
 \r
                return 1;\r
        }\r
 \r
+       char ctmp = param_getchar(Cmd, 2);\r
+       wipeCard = (ctmp == 'w' || ctmp == 'W');\r
        PrintAndLog("--block number:%2d data:%s", blockNo, sprint_hex(memBlock, 16));\r
 \r
        PrintAndLog("--block number:%2d data:%s", blockNo, sprint_hex(memBlock, 16));\r
 \r
-       res = mfCSetBlock(blockNo, memBlock, uid, 0, CSETBLOCK_SINGLE_OPER);\r
+       res = mfCSetBlock(blockNo, memBlock, NULL, wipeCard, CSETBLOCK_SINGLE_OPER);\r
        if (res) {\r
        if (res) {\r
-                       PrintAndLog("Can't write block. error=%d", res);\r
-                       return 1;\r
-               }\r
-       \r
+               PrintAndLog("Can't write block. error=%d", res);\r
+               return 1;\r
+       }\r
        return 0;\r
 }\r
 \r
        return 0;\r
 }\r
 \r
@@ -1506,7 +1580,7 @@ int CmdHF14AMfCLoad(const char *Cmd)
        char buf[64] = {0x00};\r
        uint8_t buf8[64] = {0x00};\r
        uint8_t fillFromEmulator = 0;\r
        char buf[64] = {0x00};\r
        uint8_t buf8[64] = {0x00};\r
        uint8_t fillFromEmulator = 0;\r
-       int i, len, blockNum, flags;\r
+       int i, len, blockNum, flags=0;\r
        \r
        if (param_getchar(Cmd, 0) == 'h' || param_getchar(Cmd, 0)== 0x00) {\r
                PrintAndLog("It loads magic Chinese card from the file `filename.eml`");\r
        \r
        if (param_getchar(Cmd, 0) == 'h' || param_getchar(Cmd, 0)== 0x00) {\r
                PrintAndLog("It loads magic Chinese card from the file `filename.eml`");\r
@@ -1521,15 +1595,14 @@ int CmdHF14AMfCLoad(const char *Cmd)
        if (ctmp == 'e' || ctmp == 'E') fillFromEmulator = 1;\r
        \r
        if (fillFromEmulator) {\r
        if (ctmp == 'e' || ctmp == 'E') fillFromEmulator = 1;\r
        \r
        if (fillFromEmulator) {\r
-               flags = CSETBLOCK_INIT_FIELD + CSETBLOCK_WUPC;\r
                for (blockNum = 0; blockNum < 16 * 4; blockNum += 1) {\r
                        if (mfEmlGetMem(buf8, blockNum, 1)) {\r
                                PrintAndLog("Cant get block: %d", blockNum);\r
                                return 2;\r
                        }\r
                for (blockNum = 0; blockNum < 16 * 4; blockNum += 1) {\r
                        if (mfEmlGetMem(buf8, blockNum, 1)) {\r
                                PrintAndLog("Cant get block: %d", blockNum);\r
                                return 2;\r
                        }\r
-                       \r
-                       if (blockNum == 2) flags = 0;\r
-                       if (blockNum == 16 * 4 - 1) flags = CSETBLOCK_HALT + CSETBLOCK_RESET_FIELD;\r
+                       if (blockNum == 0) flags = CSETBLOCK_INIT_FIELD + CSETBLOCK_WUPC;                               // switch on field and send magic sequence\r
+                       if (blockNum == 1) flags = 0;                                                                                                   // just write\r
+                       if (blockNum == 16 * 4 - 1) flags = CSETBLOCK_HALT + CSETBLOCK_RESET_FIELD;             // Done. Magic Halt and switch off field.\r
 \r
                        if (mfCSetBlock(blockNum, buf8, NULL, 0, flags)) {\r
                                PrintAndLog("Cant set magic card block: %d", blockNum);\r
 \r
                        if (mfCSetBlock(blockNum, buf8, NULL, 0, flags)) {\r
                                PrintAndLog("Cant set magic card block: %d", blockNum);\r
@@ -1539,7 +1612,7 @@ int CmdHF14AMfCLoad(const char *Cmd)
                return 0;\r
        } else {\r
                len = strlen(Cmd);\r
                return 0;\r
        } else {\r
                len = strlen(Cmd);\r
-               if (len > FILE_PATH_SIZE) len = FILE_PATH_SIZE;\r
+               if (len > FILE_PATH_SIZE - 4) len = FILE_PATH_SIZE - 4;\r
 \r
                memcpy(filename, Cmd, len);\r
                fnameptr += len;\r
 \r
                memcpy(filename, Cmd, len);\r
                fnameptr += len;\r
@@ -1554,27 +1627,29 @@ int CmdHF14AMfCLoad(const char *Cmd)
                }\r
        \r
                blockNum = 0;\r
                }\r
        \r
                blockNum = 0;\r
-               flags = CSETBLOCK_INIT_FIELD + CSETBLOCK_WUPC;\r
                while(!feof(f)){\r
                \r
                        memset(buf, 0, sizeof(buf));\r
                        \r
                        if (fgets(buf, sizeof(buf), f) == NULL) {\r
                while(!feof(f)){\r
                \r
                        memset(buf, 0, sizeof(buf));\r
                        \r
                        if (fgets(buf, sizeof(buf), f) == NULL) {\r
+                               fclose(f);\r
                                PrintAndLog("File reading error.");\r
                                return 2;\r
                        }\r
 \r
                                PrintAndLog("File reading error.");\r
                                return 2;\r
                        }\r
 \r
-                       if (strlen(buf) < 32){\r
+                       if (strlen(buf) < 32) {\r
                                if(strlen(buf) && feof(f))\r
                                        break;\r
                                PrintAndLog("File content error. Block data must include 32 HEX symbols");\r
                                if(strlen(buf) && feof(f))\r
                                        break;\r
                                PrintAndLog("File content error. Block data must include 32 HEX symbols");\r
+                               fclose(f);\r
                                return 2;\r
                        }\r
                        for (i = 0; i < 32; i += 2)\r
                                sscanf(&buf[i], "%02x", (unsigned int *)&buf8[i / 2]);\r
 \r
                                return 2;\r
                        }\r
                        for (i = 0; i < 32; i += 2)\r
                                sscanf(&buf[i], "%02x", (unsigned int *)&buf8[i / 2]);\r
 \r
-                       if (blockNum == 2) flags = 0;\r
-                       if (blockNum == 16 * 4 - 1) flags = CSETBLOCK_HALT + CSETBLOCK_RESET_FIELD;\r
+                       if (blockNum == 0) flags = CSETBLOCK_INIT_FIELD + CSETBLOCK_WUPC;                               // switch on field and send magic sequence\r
+                       if (blockNum == 1) flags = 0;                                                                                                   // just write\r
+                       if (blockNum == 16 * 4 - 1) flags = CSETBLOCK_HALT + CSETBLOCK_RESET_FIELD;             // Done. Switch off field.\r
 \r
                        if (mfCSetBlock(blockNum, buf8, NULL, 0, flags)) {\r
                                PrintAndLog("Can't set magic card block: %d", blockNum);\r
 \r
                        if (mfCSetBlock(blockNum, buf8, NULL, 0, flags)) {\r
                                PrintAndLog("Can't set magic card block: %d", blockNum);\r
@@ -1605,7 +1680,7 @@ int CmdHF14AMfCGetBlk(const char *Cmd) {
        if (strlen(Cmd) < 1 || param_getchar(Cmd, 0) == 'h') {\r
                PrintAndLog("Usage:  hf mf cgetblk <block number>");\r
                PrintAndLog("sample:  hf mf cgetblk 1");\r
        if (strlen(Cmd) < 1 || param_getchar(Cmd, 0) == 'h') {\r
                PrintAndLog("Usage:  hf mf cgetblk <block number>");\r
                PrintAndLog("sample:  hf mf cgetblk 1");\r
-               PrintAndLog("Get block data from magic Chinese card (only works with!!!)\n");\r
+               PrintAndLog("Get block data from magic Chinese card (only works with such cards)\n");\r
                return 0;\r
        }       \r
 \r
                return 0;\r
        }       \r
 \r
@@ -1632,7 +1707,7 @@ int CmdHF14AMfCGetSc(const char *Cmd) {
        if (strlen(Cmd) < 1 || param_getchar(Cmd, 0) == 'h') {\r
                PrintAndLog("Usage:  hf mf cgetsc <sector number>");\r
                PrintAndLog("sample:  hf mf cgetsc 0");\r
        if (strlen(Cmd) < 1 || param_getchar(Cmd, 0) == 'h') {\r
                PrintAndLog("Usage:  hf mf cgetsc <sector number>");\r
                PrintAndLog("sample:  hf mf cgetsc 0");\r
-               PrintAndLog("Get sector data from magic Chinese card (only works with!!!)\n");\r
+               PrintAndLog("Get sector data from magic Chinese card (only works with such cards)\n");\r
                return 0;\r
        }       \r
 \r
                return 0;\r
        }       \r
 \r
@@ -1706,16 +1781,18 @@ int CmdHF14AMfCSave(const char *Cmd) {
                return 0;\r
        } else {\r
                len = strlen(Cmd);\r
                return 0;\r
        } else {\r
                len = strlen(Cmd);\r
-               if (len > FILE_PATH_SIZE) len = FILE_PATH_SIZE;\r
+               if (len > FILE_PATH_SIZE - 4) len = FILE_PATH_SIZE - 4;\r
        \r
                if (len < 1) {\r
                        // get filename\r
                        if (mfCGetBlock(0, buf, CSETBLOCK_SINGLE_OPER)) {\r
                                PrintAndLog("Cant get block: %d", 0);\r
        \r
                if (len < 1) {\r
                        // get filename\r
                        if (mfCGetBlock(0, buf, CSETBLOCK_SINGLE_OPER)) {\r
                                PrintAndLog("Cant get block: %d", 0);\r
-                               return 1;\r
+                               len = sprintf(fnameptr, "dump");\r
+                               fnameptr += len;\r
+                       } else {\r
+                               for (j = 0; j < 7; j++, fnameptr += 2)\r
+                                       sprintf(fnameptr, "%02x", buf[j]); \r
                        }\r
                        }\r
-                       for (j = 0; j < 7; j++, fnameptr += 2)\r
-                               sprintf(fnameptr, "%02x", buf[j]); \r
                } else {\r
                        memcpy(filename, Cmd, len);\r
                        fnameptr += len;\r
                } else {\r
                        memcpy(filename, Cmd, len);\r
                        fnameptr += len;\r
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