ADD: @marshmellow42 's fixes to cmdlft55xx.c (save_restoreGB)

[proxmark3-svn] / client / cmdlft55xx.c

diff --git a/client/cmdlft55xx.c b/client/cmdlft55xx.c
index ba82087af0fa8a775b00f0a9e4c4703a1b476ef0..de0ade283813695a73ccaa99b55aad4cf3a5803d 100644 (file)
--- a/client/cmdlft55xx.c
+++ b/client/cmdlft55xx.c
@@ -152,13 +152,15 @@ int usage_t55xx_wakup(){
 int usage_t55xx_bruteforce(){\r
     PrintAndLog("Usage: lf t55xx bruteforce <start password> <end password> [i <*.dic>]");\r
     PrintAndLog("       password must be 4 bytes (8 hex symbols)");\r
+       PrintAndLog("This command uses A) bruteforce to scan a number range");\r
+       PrintAndLog("                  B) a dictionary attack");\r
        PrintAndLog("Options:");\r
        PrintAndLog("     h                     - this help");\r
     PrintAndLog("     i <*.dic>        - loads a default keys dictionary file <*.dic>");\r
     PrintAndLog("");\r
     PrintAndLog("Examples:");\r
     PrintAndLog("       lf t55xx bruteforce aaaaaaaa bbbbbbbb");\r
-       PrintAndLog("       lf t55xx bruteforce i mykeys.dic");\r
+       PrintAndLog("       lf t55xx bruteforce i default_pwd.dic");\r
     PrintAndLog("");\r
     return 0;\r
 }\r
@@ -382,18 +384,22 @@ bool DecodeT55xxBlock(){
                        ans = ASKDemod(cmdStr, FALSE, FALSE, 1);\r
                        break;\r
                case DEMOD_PSK1:\r
-                       // skip first 160 samples to allow antenna to settle in (psk gets inverted occasionally otherwise)\r
+                       // skip first 16 samples to allow antenna to settle in (psk gets inverted occasionally otherwise)\r
+                       save_restoreGB(1);\r
                        CmdLtrim("160");\r
                        snprintf(cmdStr, sizeof(buf),"%d %d 6", bitRate[config.bitrate], config.inverted );\r
                        ans = PSKDemod(cmdStr, FALSE);\r
+                       save_restoreGB(0);\r
                        break;\r
                case DEMOD_PSK2: //inverted won't affect this\r
                case DEMOD_PSK3: //not fully implemented\r
                        // skip first 160 samples to allow antenna to settle in (psk gets inverted occasionally otherwise)\r
+                       save_restoreGB(1);\r
                        CmdLtrim("160");\r
                        snprintf(cmdStr, sizeof(buf),"%d 0 6", bitRate[config.bitrate] );\r
                        ans = PSKDemod(cmdStr, FALSE);\r
                        psk1TOpsk2(DemodBuffer, DemodBufferLen);\r
+                       save_restoreGB(1);\r
                        break;\r
                case DEMOD_NRZ:\r
                        snprintf(cmdStr, sizeof(buf),"%d %d 1", bitRate[config.bitrate], config.inverted );\r
@@ -1009,8 +1015,14 @@ int CmdT55xxInfo(const char *Cmd){
 \r
        if (!DecodeT55xxBlock()) return 1;\r
 \r
+       // too little space to start with\r
        if ( DemodBufferLen < 32) return 1;\r
 \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
@@ -1315,7 +1327,7 @@ int CmdT55xxWipe(const char *Cmd) {
                if (!CmdT55xxWriteBlock(ptrData)) \r
                        PrintAndLog("Error writing blk %d", blk);\r
                \r
-               memset(writeData, sizeof(writeData), 0x00);\r
+               memset(writeData,0x00, sizeof(writeData));\r
        }\r
        return 0;\r
 }\r
@@ -1388,43 +1400,68 @@ int CmdT55xxBruteForce(const char *Cmd) {
                        PrintAndLog("No keys found in file");\r
                        return 1;\r
                }\r
+               PrintAndLog("Loaded %d keys", keycnt);\r
                \r
                // loop\r
-               uint32_t testpwd = 0x00;\r
+               uint64_t testpwd = 0x00;\r
                for (uint16_t c = 0; c < keycnt; ++c ) {\r
        \r
-                       testpwd = bytes_to_num(keyBlock + 4*keycnt, 4);\r
+                       if (ukbhit()) {\r
+                               getchar();\r
+                               printf("\naborted via keyboard!\n");\r
+                               return 0;\r
+                       }\r
+               \r
+                       testpwd = bytes_to_num(keyBlock + 4*c, 4);\r
+\r
+                       PrintAndLog("Testing %08X", testpwd);\r
+                       \r
+                       \r
+                       if ( !AquireData(T55x7_PAGE0, T55x7_CONFIGURATION_BLOCK, TRUE, testpwd)) {\r
+                               PrintAndLog("Aquireing data from device failed. Quitting");\r
+                               return 0;\r
+                       }\r
                        \r
-                       AquireData(T55x7_PAGE0, T55x7_CONFIGURATION_BLOCK, TRUE, testpwd);\r
                        found = tryDetectModulation();\r
-               \r
+\r
                        if ( found ) {\r
-                               PrintAndLog("Found valid password:[%08X]", testpwd);\r
+                               PrintAndLog("Found valid password: [%08X]", testpwd);\r
                                return 0;\r
                        } \r
                }\r
+               PrintAndLog("Password NOT found.");\r
+               return 0;\r
        }\r
        \r
+       // Try to read Block 7, first :)\r
        \r
+       // incremental pwd range search\r
     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
        \r
-    PrintAndLog("Search password  range [%08X -> %08X]", start_password, end_password);\r
+    PrintAndLog("Search password range [%08X -> %08X]", start_password, end_password);\r
        \r
     uint32_t i = start_password;\r
 \r
     while ((!found) && (i <= end_password)){\r
 \r
-               AquireData(T55x7_PAGE0, T55x7_CONFIGURATION_BLOCK, TRUE, i);\r
+               printf(".");\r
+               fflush(stdout);\r
+               if (ukbhit()) {\r
+                       getchar();\r
+                       printf("\naborted via keyboard!\n");\r
+                       return 0;\r
+               }\r
+                       \r
+               if (!AquireData(T55x7_PAGE0, T55x7_CONFIGURATION_BLOCK, TRUE, i)) {\r
+                       PrintAndLog("Aquireing data from device failed. Quitting");\r
+                       return 0;\r
+               }\r
                found = tryDetectModulation();\r
         \r
-               if (found)\r
-                       break;\r
-        \r
-        if ((i % 0x100) == 0) printf("[%08x], ",i);\r
-\r
+               if (found) break;\r
                i++;\r
     }\r
     \r
@@ -1433,7 +1470,7 @@ int CmdT55xxBruteForce(const char *Cmd) {
     if (found)\r
                PrintAndLog("Found valid password: [%08x]", i);\r
     else\r
-               PrintAndLog("Password NOT found. Last tried: [%08x]", i);\r
+               PrintAndLog("Password NOT found. Last tried: [%08x]", --i);\r
     return 0;\r
 }\r
 \r