]> git.zerfleddert.de Git - proxmark3-svn/blobdiff - client/cmdlft55xx.c
FIX: Coverity, resource leaks 'nd more.. in "lf t55xx bruteforce" nasty piece of...
[proxmark3-svn] / client / cmdlft55xx.c
index 75c1a1f8f8ccb197a6e6c1bc225af0dec1842516..10461754fe11f85af2d7898426e9e140ac650a78 100644 (file)
@@ -10,7 +10,7 @@
 #include <stdio.h>\r
 #include <string.h>\r
 #include <inttypes.h>\r
-#include <time.h>\r
+//#include <time.h>\r
 #include "proxmark3.h"\r
 #include "ui.h"\r
 #include "graph.h"\r
@@ -22,8 +22,6 @@
 #include "util.h"\r
 #include "data.h"\r
 #include "lfdemod.h"\r
-#include "../common/crc.h"\r
-#include "../common/iso14443crc.h"\r
 #include "cmdhf14a.h"\r
 \r
 #define T55x7_CONFIGURATION_BLOCK 0x00\r
@@ -166,7 +164,18 @@ int usage_t55xx_bruteforce(){
     PrintAndLog("");\r
     return 0;\r
 }\r
-\r
+int usage_t55xx_wipe(){\r
+       PrintAndLog("Usage:  lf t55xx wipe [h] [Q5]");\r
+       PrintAndLog("This commands wipes a tag, fills blocks 1-7 with zeros and a default configuration block");\r
+       PrintAndLog("Options:");\r
+       PrintAndLog("     h     - this help");\r
+    PrintAndLog("     Q5       - indicates to use the T555 (Q5) default configuration block");\r
+    PrintAndLog("");\r
+       PrintAndLog("Examples:");\r
+    PrintAndLog("      lf t55xx wipe   -  wipes a t55x7 tag,    config block 0x000880E0");\r
+       PrintAndLog("      lf t55xx wipe Q5 -  wipes a t5555 Q5 tag, config block 0x6001F004");\r
+       return 0;\r
+}\r
 static int CmdHelp(const char *Cmd);\r
 \r
 void printT5xxHeader(uint8_t page){\r
@@ -419,6 +428,14 @@ bool DecodeT55xxBlock(){
        return (bool) ans;\r
 }\r
 \r
+bool DecodeT5555TraceBlock() {\r
+       DemodBufferLen = 0x00;\r
+       \r
+       // According to datasheet. Always: RF/64, not inverted, Manchester\r
+       return (bool) ASKDemod("64 0 1", FALSE, FALSE, 1);\r
+}\r
+\r
+\r
 int CmdT55xxDetect(const char *Cmd){\r
        bool errors = FALSE;\r
        bool useGB = FALSE;\r
@@ -936,58 +953,109 @@ int CmdT55xxReadTrace(const char *Cmd) {
        if (strlen(Cmd)==0)\r
                if ( !AquireData( T55x7_PAGE1, REGULAR_READ_MODE_BLOCK, pwdmode, password ) )\r
                        return 0;\r
-       \r
-       if (!DecodeT55xxBlock()) return 0;\r
 \r
-       if ( !DemodBufferLen) return 0;\r
+       if ( config.Q5 ){\r
+               if (!DecodeT5555TraceBlock()) return 0;\r
+       }\r
+       else {\r
+               if (!DecodeT55xxBlock()) return 0;\r
+       }\r
+       \r
+       if ( !DemodBufferLen ) return 0;\r
        \r
        RepaintGraphWindow();\r
-       uint8_t repeat = 0;\r
-       if (config.offset > 5) \r
-               repeat = 32;\r
-       uint8_t si = config.offset+repeat;\r
-       uint32_t bl1     = PackBits(si, 32, DemodBuffer);\r
-       uint32_t bl2     = PackBits(si+32, 32, DemodBuffer);\r
+       uint8_t repeat = (config.offset > 5) ? 32 : 0;\r
        \r
-       uint32_t acl     = PackBits(si, 8,  DemodBuffer); si += 8;\r
-       uint32_t mfc     = PackBits(si, 8,  DemodBuffer); si += 8;\r
-       uint32_t cid     = PackBits(si, 5,  DemodBuffer); si += 5;\r
-       uint32_t icr     = PackBits(si, 3,  DemodBuffer); si += 3;\r
-       uint32_t year    = PackBits(si, 4,  DemodBuffer); si += 4;\r
-       uint32_t quarter = PackBits(si, 2,  DemodBuffer); si += 2;\r
-       uint32_t lotid   = PackBits(si, 14, DemodBuffer); si += 14;\r
-       uint32_t wafer   = PackBits(si, 5,  DemodBuffer); si += 5;\r
-       uint32_t dw      = PackBits(si, 15, DemodBuffer); \r
+       uint8_t si = config.offset + repeat;\r
+       uint32_t bl1 = PackBits(si, 32, DemodBuffer);\r
+       uint32_t bl2 = PackBits(si+32, 32, DemodBuffer);        \r
        \r
-       time_t t = time(NULL);\r
-       struct tm tm = *localtime(&t);\r
-       if ( year > tm.tm_year-110)\r
-               year += 2000;\r
-       else\r
-               year += 2010;\r
-\r
-       if (config.Q5) PrintAndLog("*** Warning *** Info read off a Q5 will not work as expected");\r
-       if ( acl != 0xE0 ) {\r
-               PrintAndLog("The modulation is most likely wrong since the ACL is not 0xE0. ");\r
-               return 0;\r
+       if (config.Q5) {\r
+               uint32_t hdr = PackBits(si, 9,  DemodBuffer); si += 9;\r
+    \r
+               if (hdr != 0x1FF) {\r
+                 PrintAndLog("Invalid Q5 Trace data header (expected 0x1FF, found %X)", hdr);\r
+                 return 0;\r
+               }\r
+    \r
+               t5555_tracedata_t data = {.bl1 = bl1, .bl2 = bl2, .icr = 0, .lotidc = '?', .lotid = 0, .wafer = 0, .dw =0};\r
+                       \r
+               data.icr     = PackBits(si, 2,  DemodBuffer); si += 2;\r
+               data.lotidc  = 'Z' - PackBits(si, 2,  DemodBuffer); si += 3;\r
+               \r
+               data.lotid   = PackBits(si, 4,  DemodBuffer); si += 5;\r
+               data.lotid <<= 4;\r
+               data.lotid  |= PackBits(si, 4,  DemodBuffer); si += 5;\r
+               data.lotid <<= 4;\r
+               data.lotid  |= PackBits(si, 4,  DemodBuffer); si += 5;\r
+               data.lotid <<= 4;\r
+               data.lotid  |= PackBits(si, 4,  DemodBuffer); si += 5;\r
+               data.lotid <<= 1;\r
+               data.lotid  |= PackBits(si, 1,  DemodBuffer); si += 1;\r
+               \r
+               data.wafer   = PackBits(si, 3,  DemodBuffer); si += 4;\r
+               data.wafer <<= 2;\r
+               data.wafer  |= PackBits(si, 2,  DemodBuffer); si += 2;\r
+               \r
+               data.dw      = PackBits(si, 2,  DemodBuffer); si += 3;\r
+               data.dw    <<= 4;\r
+               data.dw     |= PackBits(si, 4,  DemodBuffer); si += 5;\r
+               data.dw    <<= 4;\r
+               data.dw     |= PackBits(si, 4,  DemodBuffer); si += 5;\r
+               data.dw    <<= 4;\r
+               data.dw     |= PackBits(si, 4,  DemodBuffer); si += 5;\r
+       \r
+               printT5555Trace(data, repeat);\r
+               \r
+       } else {\r
+       \r
+               t55xx_tracedata_t data = {.bl1 = bl1, .bl2 = bl2, .acl = 0, .mfc = 0, .cid = 0, .year = 0, .quarter = 0, .icr = 0,  .lotid = 0, .wafer = 0, .dw = 0};\r
+               \r
+               data.acl = PackBits(si, 8,  DemodBuffer); si += 8;\r
+               if ( data.acl != 0xE0 ) {\r
+                       PrintAndLog("The modulation is most likely wrong since the ACL is not 0xE0. ");\r
+                       return 0;\r
+               }\r
+\r
+               data.mfc     = PackBits(si, 8,  DemodBuffer); si += 8;\r
+               data.cid     = PackBits(si, 5,  DemodBuffer); si += 5;\r
+               data.icr     = PackBits(si, 3,  DemodBuffer); si += 3;\r
+               data.year    = PackBits(si, 4,  DemodBuffer); si += 4;\r
+               data.quarter = PackBits(si, 2,  DemodBuffer); si += 2;\r
+               data.lotid   = PackBits(si, 14, DemodBuffer); si += 14;\r
+               data.wafer   = PackBits(si, 5,  DemodBuffer); si += 5;\r
+               data.dw      = PackBits(si, 15, DemodBuffer); \r
+\r
+               time_t t = time(NULL);\r
+               struct tm tm = *localtime(&t);\r
+               if ( data.year > tm.tm_year-110)\r
+                       data.year += 2000;\r
+               else\r
+                       data.year += 2010;\r
+\r
+               \r
+               printT55xxTrace(data, repeat);\r
        }\r
-       PrintAndLog("");\r
+       return 0;\r
+}\r
+\r
+void printT55xxTrace( t55xx_tracedata_t data, uint8_t repeat ){\r
        PrintAndLog("-- T55xx Trace Information ----------------------------------");\r
        PrintAndLog("-------------------------------------------------------------");\r
-       PrintAndLog(" ACL Allocation class (ISO/IEC 15963-1)  : 0x%02X (%d)", acl, acl);\r
-       PrintAndLog(" MFC Manufacturer ID (ISO/IEC 7816-6)    : 0x%02X (%d) - %s", mfc, mfc, getTagInfo(mfc));\r
-       PrintAndLog(" CID                                     : 0x%02X (%d) - %s", cid, cid, GetModelStrFromCID(cid));\r
-       PrintAndLog(" ICR IC Revision                         : %d",icr );\r
+       PrintAndLog(" ACL Allocation class (ISO/IEC 15963-1)  : 0x%02X (%d)", data.acl, data.acl);\r
+       PrintAndLog(" MFC Manufacturer ID (ISO/IEC 7816-6)    : 0x%02X (%d) - %s", data.mfc, data.mfc, getTagInfo(data.mfc));\r
+       PrintAndLog(" CID                                     : 0x%02X (%d) - %s", data.cid, data.cid, GetModelStrFromCID(data.cid));\r
+       PrintAndLog(" ICR IC Revision                         : %d", data.icr );\r
        PrintAndLog(" Manufactured");\r
-       PrintAndLog("     Year/Quarter : %d/%d",year, quarter);\r
-       PrintAndLog("     Lot ID       : %d", lotid );\r
-       PrintAndLog("     Wafer number : %d", wafer);\r
-       PrintAndLog("     Die Number   : %d", dw);\r
+       PrintAndLog("     Year/Quarter : %d/%d", data.year, data.quarter);\r
+       PrintAndLog("     Lot ID       : %d", data.lotid );\r
+       PrintAndLog("     Wafer number : %d", data.wafer);\r
+       PrintAndLog("     Die Number   : %d", data.dw);\r
        PrintAndLog("-------------------------------------------------------------");\r
        PrintAndLog(" Raw Data - Page 1");\r
-       PrintAndLog("     Block 1  : 0x%08X  %s", bl1, sprint_bin(DemodBuffer+config.offset+repeat,32) );\r
-       PrintAndLog("     Block 2  : 0x%08X  %s", bl2, sprint_bin(DemodBuffer+config.offset+repeat+32,32) );\r
-       PrintAndLog("-------------------------------------------------------------");\r
+       PrintAndLog("     Block 1  : 0x%08X  %s", data.bl1, sprint_bin(DemodBuffer+config.offset+repeat,32) );\r
+       PrintAndLog("     Block 2  : 0x%08X  %s", data.bl2, sprint_bin(DemodBuffer+config.offset+repeat+32,32) );\r
+       PrintAndLog("-------------------------------------------------------------");   \r
 \r
        /*\r
        TRACE - BLOCK O\r
@@ -1005,8 +1073,32 @@ int CmdT55xxReadTrace(const char *Cmd) {
                13-17   Wafer number\r
                18-32   DW,  die number sequential\r
        */\r
+}\r
+void printT5555Trace( t5555_tracedata_t data, uint8_t repeat ){\r
+       PrintAndLog("-- T5555 (Q5) Trace Information -----------------------------");\r
+       PrintAndLog("-------------------------------------------------------------");\r
+       PrintAndLog(" ICR IC Revision  : %d", data.icr );       \r
+       PrintAndLog("     Lot          : %c%d", data.lotidc, data.lotid);\r
+       PrintAndLog("     Wafer number : %d", data.wafer);\r
+       PrintAndLog("     Die Number   : %d", data.dw);\r
+       PrintAndLog("-------------------------------------------------------------");\r
+       PrintAndLog(" Raw Data - Page 1");\r
+       PrintAndLog("     Block 1  : 0x%08X  %s", data.bl1, sprint_bin(DemodBuffer+config.offset+repeat,32) );\r
+       PrintAndLog("     Block 2  : 0x%08X  %s", data.bl2, sprint_bin(DemodBuffer+config.offset+repeat+32,32) );\r
        \r
-  return 0;\r
+       /*\r
+               ** Q5 **\r
+               TRACE - BLOCK O and BLOCK1\r
+               Bits    Definition                              HEX\r
+               1-9             Header                  0x1FF\r
+               10-11 IC Revision\r
+               12-13 Lot ID char\r
+               15-35 Lot ID (NB parity)\r
+               36-41 Wafer number (NB parity)\r
+               42-58 DW, die number sequential (NB parity)\r
+               60-63 Parity bits\r
+               64    Always zero\r
+       */\r
 }\r
 \r
 int CmdT55xxInfo(const char *Cmd){\r
@@ -1032,12 +1124,9 @@ int CmdT55xxInfo(const char *Cmd){
 \r
        // \r
        PrintAndLog("Offset+32 ==%d\n DemodLen == %d", config.offset + 32,DemodBufferLen );\r
-               \r
 \r
-       \r
        uint8_t si = config.offset;\r
-       uint32_t bl0      = PackBits(si, 32, DemodBuffer);\r
-       \r
+       uint32_t bl0      = PackBits(si, 32, DemodBuffer);      \r
        uint32_t safer    = PackBits(si, 4, DemodBuffer); si += 4;      \r
        uint32_t resv     = PackBits(si, 7, DemodBuffer); si += 7;\r
        uint32_t dbr      = PackBits(si, 3, DemodBuffer); si += 3;\r
@@ -1052,6 +1141,7 @@ int CmdT55xxInfo(const char *Cmd){
        uint32_t fw       = PackBits(si, 1, DemodBuffer); si += 1;\r
        uint32_t inv      = PackBits(si, 1, DemodBuffer); si += 1;      \r
        uint32_t por      = PackBits(si, 1, DemodBuffer); si += 1;\r
+       \r
        if (config.Q5) PrintAndLog("*** Warning *** Config Info read off a Q5 will not display as expected");\r
        PrintAndLog("");\r
        PrintAndLog("-- T55xx Configuration & Tag Information --------------------");\r
@@ -1162,45 +1252,19 @@ char * GetModulationStr( uint32_t id){
        char *retStr = buf;\r
        \r
        switch (id){\r
-               case 0: \r
-                       snprintf(retStr,sizeof(buf),"%d - DIRECT (ASK/NRZ)",id);\r
-                       break;\r
-               case 1:\r
-                       snprintf(retStr,sizeof(buf),"%d - PSK 1 phase change when input changes",id);\r
-                       break;\r
-               case 2:         \r
-                       snprintf(retStr,sizeof(buf),"%d - PSK 2 phase change on bitclk if input high",id);\r
-                       break;\r
-               case 3:\r
-                       snprintf(retStr,sizeof(buf),"%d - PSK 3 phase change on rising edge of input",id);\r
-                       break;\r
-               case 4:\r
-                       snprintf(retStr,sizeof(buf),"%d - FSK 1 RF/8  RF/5",id);\r
-                       break;\r
-               case 5:\r
-                       snprintf(retStr,sizeof(buf),"%d - FSK 2 RF/8  RF/10",id);\r
-                       break;\r
-               case 6:\r
-                       snprintf(retStr,sizeof(buf),"%d - FSK 1a RF/5  RF/8",id);\r
-                       break;\r
-               case 7:\r
-                       snprintf(retStr,sizeof(buf),"%d - FSK 2a RF/10  RF/8",id);\r
-                       break;\r
-               case 8:\r
-                       snprintf(retStr,sizeof(buf),"%d - Manchester",id);\r
-                       break;\r
-               case 16:\r
-                       snprintf(retStr,sizeof(buf),"%d - Biphase",id);\r
-                       break;\r
-               case 0x18:\r
-                       snprintf(retStr,sizeof(buf),"%d - Biphase a - AKA Conditional Dephase Encoding(CDP)",id);\r
-                       break;\r
-               case 17:\r
-                       snprintf(retStr,sizeof(buf),"%d - Reserved",id);\r
-                       break;\r
-               default:\r
-                       snprintf(retStr,sizeof(buf),"0x%02X (Unknown)",id);\r
-                       break;\r
+               case 0: snprintf(retStr,sizeof(buf),"%d - DIRECT (ASK/NRZ)",id); break;\r
+               case 1: snprintf(retStr,sizeof(buf),"%d - PSK 1 phase change when input changes",id); break;\r
+               case 2: snprintf(retStr,sizeof(buf),"%d - PSK 2 phase change on bitclk if input high",id); break;\r
+               case 3: snprintf(retStr,sizeof(buf),"%d - PSK 3 phase change on rising edge of input",id); break;\r
+               case 4: snprintf(retStr,sizeof(buf),"%d - FSK 1 RF/8  RF/5",id); break;\r
+               case 5: snprintf(retStr,sizeof(buf),"%d - FSK 2 RF/8  RF/10",id); break;\r
+               case 6: snprintf(retStr,sizeof(buf),"%d - FSK 1a RF/5  RF/8",id); break;\r
+               case 7: snprintf(retStr,sizeof(buf),"%d - FSK 2a RF/10  RF/8",id); break;\r
+               case 8: snprintf(retStr,sizeof(buf),"%d - Manchester",id); break;\r
+               case 16: snprintf(retStr,sizeof(buf),"%d - Biphase",id); break;\r
+               case 0x18:snprintf(retStr,sizeof(buf),"%d - Biphase a - AKA Conditional Dephase Encoding(CDP)",id); break;\r
+               case 17: snprintf(retStr,sizeof(buf),"%d - Reserved",id); break;\r
+               default: snprintf(retStr,sizeof(buf),"0x%02X (Unknown)",id); break;\r
                }\r
        return buf;\r
 }\r
@@ -1221,45 +1285,19 @@ char * GetSelectedModulationStr( uint8_t id){
        char *retStr = buf;\r
 \r
        switch (id){\r
-               case DEMOD_FSK:\r
-                       snprintf(retStr,sizeof(buf),"FSK");\r
-                       break;\r
-               case DEMOD_FSK1:\r
-                       snprintf(retStr,sizeof(buf),"FSK1");\r
-                       break;\r
-               case DEMOD_FSK1a:\r
-                       snprintf(retStr,sizeof(buf),"FSK1a");\r
-                       break;\r
-               case DEMOD_FSK2:\r
-                       snprintf(retStr,sizeof(buf),"FSK2");\r
-                       break;\r
-               case DEMOD_FSK2a:\r
-                       snprintf(retStr,sizeof(buf),"FSK2a");\r
-                       break;\r
-               case DEMOD_ASK:         \r
-                       snprintf(retStr,sizeof(buf),"ASK");\r
-                       break;\r
-               case DEMOD_NRZ:\r
-                       snprintf(retStr,sizeof(buf),"DIRECT/NRZ");\r
-                       break;\r
-               case DEMOD_PSK1:\r
-                       snprintf(retStr,sizeof(buf),"PSK1");\r
-                       break;\r
-               case DEMOD_PSK2:\r
-                       snprintf(retStr,sizeof(buf),"PSK2");\r
-                       break;\r
-               case DEMOD_PSK3:\r
-                       snprintf(retStr,sizeof(buf),"PSK3");\r
-                       break;\r
-               case DEMOD_BI:\r
-                       snprintf(retStr,sizeof(buf),"BIPHASE");\r
-                       break;\r
-               case DEMOD_BIa:\r
-                       snprintf(retStr,sizeof(buf),"BIPHASEa - (CDP)");\r
-                       break;\r
-               default:\r
-                       snprintf(retStr,sizeof(buf),"(Unknown)");\r
-                       break;\r
+               case DEMOD_FSK: snprintf(retStr,sizeof(buf),"FSK");     break;\r
+               case DEMOD_FSK1: snprintf(retStr,sizeof(buf),"FSK1"); break;\r
+               case DEMOD_FSK1a: snprintf(retStr,sizeof(buf),"FSK1a"); break;\r
+               case DEMOD_FSK2: snprintf(retStr,sizeof(buf),"FSK2"); break;\r
+               case DEMOD_FSK2a: snprintf(retStr,sizeof(buf),"FSK2a"); break;\r
+               case DEMOD_ASK: snprintf(retStr,sizeof(buf),"ASK"); break;\r
+               case DEMOD_NRZ: snprintf(retStr,sizeof(buf),"DIRECT/NRZ"); break;\r
+               case DEMOD_PSK1: snprintf(retStr,sizeof(buf),"PSK1"); break;\r
+               case DEMOD_PSK2: snprintf(retStr,sizeof(buf),"PSK2"); break;\r
+               case DEMOD_PSK3: snprintf(retStr,sizeof(buf),"PSK3"); break;\r
+               case DEMOD_BI: snprintf(retStr,sizeof(buf),"BIPHASE"); break;\r
+               case DEMOD_BIa: snprintf(retStr,sizeof(buf),"BIPHASEa - (CDP)"); break;\r
+               default: snprintf(retStr,sizeof(buf),"(Unknown)"); break;\r
                }\r
        return buf;\r
 }\r
@@ -1278,6 +1316,7 @@ void t55x7_create_config_block( int tagtype ){
        switch (tagtype){\r
                case 0: snprintf(retStr, sizeof(buf),"%08X - T55X7 Default", T55X7_DEFAULT_CONFIG_BLOCK); break;\r
                case 1: snprintf(retStr, sizeof(buf),"%08X - T55X7 Raw", T55X7_RAW_CONFIG_BLOCK); break;\r
+               case 2: snprintf(retStr, sizeof(buf),"%08X - T5555 Q5 Default", T5555_DEFAULT_CONFIG_BLOCK); break;\r
                default:\r
                        break;\r
        }\r
@@ -1300,25 +1339,32 @@ int CmdResetRead(const char *Cmd) {
        setGraphBuf(got, sizeof(got));\r
        return 1;\r
 }\r
-\r
+// ADD T5555 (Q5) Default config block\r
 int CmdT55xxWipe(const char *Cmd) {\r
        char writeData[20] = {0};\r
        char *ptrData = writeData;\r
-       \r
+       char cmdp = param_getchar(Cmd, 0);      \r
+       if ( cmdp == 'h' || cmdp == 'H') return usage_t55xx_wipe();\r
+\r
+       bool Q5 = (cmdp == 'q' || cmdp == 'Q');\r
+\r
+       // Try with the default password to reset block 0\r
+       // With a pwd should work even if pwd bit not set\r
        PrintAndLog("\nBeginning Wipe of a T55xx tag (assuming the tag is not password protected)\n");\r
+               \r
+       if ( Q5 ){\r
+               snprintf(ptrData,sizeof(writeData),"b 0 d 6001F004 p 0");\r
+       } else {\r
+               snprintf(ptrData,sizeof(writeData),"b 0 d 000880E0 p 0");\r
+       }\r
        \r
-       //try with the default password to reset block 0  (with a pwd should work even if pwd bit not set)\r
-       snprintf(ptrData,sizeof(writeData),"b 0 d 000880E0 p 0");\r
-       \r
-       if (!CmdT55xxWriteBlock(ptrData))\r
-               PrintAndLog("Error writing blk 0");\r
+       if (!CmdT55xxWriteBlock(ptrData)) PrintAndLog("Error writing blk 0");\r
        \r
        for (uint8_t blk = 1; blk<8; blk++) {\r
                \r
                snprintf(ptrData,sizeof(writeData),"b %d d 0", blk);\r
                \r
-               if (!CmdT55xxWriteBlock(ptrData)) \r
-                       PrintAndLog("Error writing blk %d", blk);\r
+               if (!CmdT55xxWriteBlock(ptrData)) PrintAndLog("Error writing blk %d", blk);\r
                \r
                memset(writeData,0x00, sizeof(writeData));\r
        }\r
@@ -1341,7 +1387,10 @@ int CmdT55xxBruteForce(const char *Cmd) {
     bool found = false;\r
 \r
     char cmdp = param_getchar(Cmd, 0);\r
-    if (cmdp == 'h' || cmdp == 'H') return usage_t55xx_bruteforce();\r
+    if (cmdp == 'h' || cmdp == 'H') {\r
+               free(keyBlock);\r
+               return usage_t55xx_bruteforce();\r
+       }\r
 \r
        if (cmdp == 'i' || cmdp == 'I') {\r
        \r
@@ -1377,6 +1426,7 @@ int CmdT55xxBruteForce(const char *Cmd) {
                                if (!p) {\r
                                        PrintAndLog("Cannot allocate memory for defaultKeys");\r
                                        free(keyBlock);\r
+                                       fclose(f);\r
                                        return 2;\r
                                }\r
                                keyBlock = p;\r
@@ -1391,6 +1441,7 @@ int CmdT55xxBruteForce(const char *Cmd) {
                \r
                if (keycnt == 0) {\r
                        PrintAndLog("No keys found in file");\r
+                       free(keyBlock);\r
                        return 1;\r
                }\r
                PrintAndLog("Loaded %d keys", keycnt);\r
@@ -1402,6 +1453,8 @@ int CmdT55xxBruteForce(const char *Cmd) {
                        if (ukbhit()) {\r
                                getchar();\r
                                printf("\naborted via keyboard!\n");\r
+                               free(keyBlock);\r
+                               free(p);\r
                                return 0;\r
                        }\r
                \r
@@ -1412,6 +1465,8 @@ int CmdT55xxBruteForce(const char *Cmd) {
                        \r
                        if ( !AquireData(T55x7_PAGE0, T55x7_CONFIGURATION_BLOCK, TRUE, testpwd)) {\r
                                PrintAndLog("Aquireing data from device failed. Quitting");\r
+                               free(keyBlock);\r
+                               free(p);\r
                                return 0;\r
                        }\r
                        \r
@@ -1419,10 +1474,14 @@ int CmdT55xxBruteForce(const char *Cmd) {
 \r
                        if ( found ) {\r
                                PrintAndLog("Found valid password: [%08X]", testpwd);\r
+                               free(keyBlock);\r
+                               free(p);\r
                                return 0;\r
                        } \r
                }\r
                PrintAndLog("Password NOT found.");\r
+               free(keyBlock);\r
+               free(p);\r
                return 0;\r
        }\r
        \r
@@ -1432,7 +1491,10 @@ int CmdT55xxBruteForce(const char *Cmd) {
     start_password = param_get32ex(Cmd, 0, 0, 16);\r
        end_password = param_get32ex(Cmd, 1, 0, 16);\r
        \r
-       if ( start_password >= end_password ) return usage_t55xx_bruteforce();\r
+       if ( start_password >= end_password ) {\r
+               free(keyBlock);\r
+               return usage_t55xx_bruteforce();\r
+       }\r
        \r
     PrintAndLog("Search password range [%08X -> %08X]", start_password, end_password);\r
        \r
@@ -1445,11 +1507,13 @@ int CmdT55xxBruteForce(const char *Cmd) {
                if (ukbhit()) {\r
                        getchar();\r
                        printf("\naborted via keyboard!\n");\r
+                       free(keyBlock);\r
                        return 0;\r
                }\r
                        \r
                if (!AquireData(T55x7_PAGE0, T55x7_CONFIGURATION_BLOCK, TRUE, i)) {\r
                        PrintAndLog("Aquireing data from device failed. Quitting");\r
+                       free(keyBlock);\r
                        return 0;\r
                }\r
                found = tryDetectModulation();\r
@@ -1464,6 +1528,8 @@ int CmdT55xxBruteForce(const char *Cmd) {
                PrintAndLog("Found valid password: [%08x]", i);\r
     else\r
                PrintAndLog("Password NOT found. Last tried: [%08x]", --i);\r
+\r
+       free(keyBlock);\r
     return 0;\r
 }\r
 \r
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