]> git.zerfleddert.de Git - proxmark3-svn/blobdiff - client/cmdlft55xx.c
Merge pull request #21 from alexgrin/iceman_master
[proxmark3-svn] / client / cmdlft55xx.c
index a86dd42328400781c9cb7c9635ce210bb5dd5ead..6ddd84b11de169b96045c9a656b03a05df762e94 100644 (file)
@@ -10,7 +10,6 @@
 #include <stdio.h>\r
 #include <string.h>\r
 #include <inttypes.h>\r
-//#include <time.h>\r
 #include "proxmark3.h"\r
 #include "ui.h"\r
 #include "graph.h"\r
@@ -22,7 +21,7 @@
 #include "util.h"\r
 #include "data.h"\r
 #include "lfdemod.h"\r
-#include "cmdhf14a.h"\r
+#include "cmdhf14a.h" //for getTagInfo\r
 \r
 #define T55x7_CONFIGURATION_BLOCK 0x00\r
 #define T55x7_PAGE0 0x00\r
@@ -49,6 +48,7 @@ int usage_t55xx_config(){
        PrintAndLog("       i [1]                            Invert data signal, defaults to normal");\r
        PrintAndLog("       o [offset]                       Set offset, where data should start decode in bitstream");\r
        PrintAndLog("       Q5                            Set as Q5(T5555) chip instead of T55x7");\r
+       PrintAndLog("       ST                            Set Sequence Terminator on");\r
        PrintAndLog("");\r
        PrintAndLog("Examples:");\r
        PrintAndLog("      lf t55xx config d FSK          - FSK demodulation");\r
@@ -164,12 +164,27 @@ int usage_t55xx_bruteforce(){
     PrintAndLog("");\r
     return 0;\r
 }\r
-int usage_t55xx_wipe(){\r
+int usage_t55xx_recoverpw(){\r
+       PrintAndLog("This command uses a few tricks to try to recover mangled password");\r
+       PrintAndLog("WARNING: this may brick non-password protected chips!");\r
+       PrintAndLog("Usage: lf t55xx recoverpw [password]");\r
+       PrintAndLog("       password must be 4 bytes (8 hex symbols)");\r
+       PrintAndLog("       default password is 51243648, used by many cloners");\r
+       PrintAndLog("Options:");\r
+       PrintAndLog("     h           - this help");\r
+       PrintAndLog("     [password] - 4 byte hex value of password written by cloner");\r
+       PrintAndLog("");\r
+       PrintAndLog("Examples:");\r
+       PrintAndLog("       lf t55xx recoverpw");\r
+       PrintAndLog("       lf t55xx recoverpw 51243648");\r
+       PrintAndLog("");\r
+       return 0;\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("     Q5  - indicates to use the T5555 (Q5) default configuration block");\r
     PrintAndLog("");\r
        PrintAndLog("Examples:");\r
     PrintAndLog("      lf t55xx wipe   -  wipes a t55x7 tag,    config block 0x000880E0");\r
@@ -269,6 +284,11 @@ int CmdT55xxSetConfig(const char *Cmd) {
                        config.Q5 = TRUE;\r
                        cmdp++;\r
                        break;\r
+               case 'S':\r
+               case 's':               \r
+                       config.ST = TRUE;\r
+                       cmdp++;\r
+                       break;\r
                default:\r
                        PrintAndLog("Unknown parameter '%c'", param_getchar(Cmd, cmdp));\r
                        errors = TRUE;\r
@@ -371,6 +391,7 @@ bool DecodeT55xxBlock(){
        char buf[30] = {0x00};\r
        char *cmdStr = buf;\r
        int ans = 0;\r
+       bool ST = config.ST;\r
        uint8_t bitRate[8] = {8,16,32,40,50,64,100,128};\r
        DemodBufferLen = 0x00;\r
 \r
@@ -391,7 +412,7 @@ bool DecodeT55xxBlock(){
                        break;\r
                case DEMOD_ASK:\r
                        snprintf(cmdStr, sizeof(buf),"%d %d 1", bitRate[config.bitrate], config.inverted );\r
-                       ans = ASKDemod(cmdStr, FALSE, FALSE, 1);\r
+                       ans = ASKDemod_ext(cmdStr, FALSE, FALSE, 1, &ST);\r
                        break;\r
                case DEMOD_PSK1:\r
                        // skip first 160 samples to allow antenna to settle in (psk gets inverted occasionally otherwise)\r
@@ -496,6 +517,7 @@ bool tryDetectModulation(){
                        tests[hits].bitrate = bitRate;\r
                        tests[hits].inverted = FALSE;\r
                        tests[hits].block0 = PackBits(tests[hits].offset, 32, DemodBuffer);\r
+                       tests[hits].ST = FALSE;\r
                        ++hits;\r
                }\r
                if ( FSKrawDemod("0 1", FALSE) && test(DEMOD_FSK, &tests[hits].offset, &bitRate, clk, &tests[hits].Q5)) {\r
@@ -507,19 +529,22 @@ bool tryDetectModulation(){
                        tests[hits].bitrate = bitRate;\r
                        tests[hits].inverted = TRUE;\r
                        tests[hits].block0 = PackBits(tests[hits].offset, 32, DemodBuffer);\r
+                       tests[hits].ST = FALSE;\r
                        ++hits;\r
                }\r
        } else {\r
                clk = GetAskClock("", FALSE, FALSE);\r
                if (clk>0) {\r
-                       if ( ASKDemod("0 0 1", FALSE, FALSE, 1) && test(DEMOD_ASK, &tests[hits].offset, &bitRate, clk, &tests[hits].Q5)) {\r
+                       tests[hits].ST = TRUE;\r
+                       if ( ASKDemod_ext("0 0 1", FALSE, FALSE, 1, &tests[hits].ST) && test(DEMOD_ASK, &tests[hits].offset, &bitRate, clk, &tests[hits].Q5)) {\r
                                tests[hits].modulation = DEMOD_ASK;\r
                                tests[hits].bitrate = bitRate;\r
                                tests[hits].inverted = FALSE;\r
                                tests[hits].block0 = PackBits(tests[hits].offset, 32, DemodBuffer);\r
                                ++hits;\r
                        }\r
-                       if ( ASKDemod("0 1 1", FALSE, FALSE, 1)  && test(DEMOD_ASK, &tests[hits].offset, &bitRate, clk, &tests[hits].Q5)) {\r
+                       tests[hits].ST = TRUE;\r
+                       if ( ASKDemod_ext("0 1 1", FALSE, FALSE, 1, &tests[hits].ST)  && test(DEMOD_ASK, &tests[hits].offset, &bitRate, clk, &tests[hits].Q5)) {\r
                                tests[hits].modulation = DEMOD_ASK;\r
                                tests[hits].bitrate = bitRate;\r
                                tests[hits].inverted = TRUE;\r
@@ -531,6 +556,7 @@ bool tryDetectModulation(){
                                tests[hits].bitrate = bitRate;\r
                                tests[hits].inverted = FALSE;\r
                                tests[hits].block0 = PackBits(tests[hits].offset, 32, DemodBuffer);\r
+                               tests[hits].ST = FALSE;\r
                                ++hits;\r
                        }\r
                        if ( ASKbiphaseDemod("0 0 1 2", FALSE) && test(DEMOD_BIa, &tests[hits].offset, &bitRate, clk, &tests[hits].Q5) ) {\r
@@ -538,6 +564,7 @@ bool tryDetectModulation(){
                                tests[hits].bitrate = bitRate;\r
                                tests[hits].inverted = TRUE;\r
                                tests[hits].block0 = PackBits(tests[hits].offset, 32, DemodBuffer);\r
+                               tests[hits].ST = FALSE;\r
                                ++hits;\r
                        }\r
                }\r
@@ -550,6 +577,7 @@ bool tryDetectModulation(){
                                tests[hits].bitrate = bitRate;\r
                                tests[hits].inverted = FALSE;\r
                                tests[hits].block0 = PackBits(tests[hits].offset, 32, DemodBuffer);\r
+                               tests[hits].ST = FALSE;\r
                                ++hits;\r
                        }\r
 \r
@@ -558,6 +586,7 @@ bool tryDetectModulation(){
                                tests[hits].bitrate = bitRate;\r
                                tests[hits].inverted = TRUE;\r
                                tests[hits].block0 = PackBits(tests[hits].offset, 32, DemodBuffer);\r
+                               tests[hits].ST = FALSE;\r
                                ++hits;\r
                        }\r
                }\r
@@ -573,6 +602,7 @@ bool tryDetectModulation(){
                                tests[hits].bitrate = bitRate;\r
                                tests[hits].inverted = FALSE;\r
                                tests[hits].block0 = PackBits(tests[hits].offset, 32, DemodBuffer);\r
+                               tests[hits].ST = FALSE;\r
                                ++hits;\r
                        }\r
                        if ( PSKDemod("0 1 6", FALSE) && test(DEMOD_PSK1, &tests[hits].offset, &bitRate, clk, &tests[hits].Q5)) {\r
@@ -580,6 +610,7 @@ bool tryDetectModulation(){
                                tests[hits].bitrate = bitRate;\r
                                tests[hits].inverted = TRUE;\r
                                tests[hits].block0 = PackBits(tests[hits].offset, 32, DemodBuffer);\r
+                               tests[hits].ST = FALSE;\r
                                ++hits;\r
                        }\r
                        // PSK2 - needs a call to psk1TOpsk2.\r
@@ -590,6 +621,7 @@ bool tryDetectModulation(){
                                        tests[hits].bitrate = bitRate;\r
                                        tests[hits].inverted = FALSE;\r
                                        tests[hits].block0 = PackBits(tests[hits].offset, 32, DemodBuffer);\r
+                                       tests[hits].ST = FALSE;\r
                                        ++hits;\r
                                }\r
                        } // inverse waves does not affect this demod\r
@@ -601,6 +633,7 @@ bool tryDetectModulation(){
                                        tests[hits].bitrate = bitRate;\r
                                        tests[hits].inverted = FALSE;\r
                                        tests[hits].block0 = PackBits(tests[hits].offset, 32, DemodBuffer);\r
+                                       tests[hits].ST = FALSE;\r
                                        ++hits;\r
                                }\r
                        } // inverse waves does not affect this demod\r
@@ -615,6 +648,7 @@ bool tryDetectModulation(){
                config.offset = tests[0].offset;\r
                config.block0 = tests[0].block0;\r
                config.Q5 = tests[0].Q5;\r
+               config.ST = tests[0].ST;\r
                printConfiguration( config );\r
                return TRUE;\r
        }\r
@@ -767,14 +801,14 @@ bool test(uint8_t mode, uint8_t *offset, int *fndBitRate, uint8_t clk, bool *Q5)
                uint8_t extend   = PackBits(si, 1, DemodBuffer); si += 1;     //bit 15 extended mode\r
                uint8_t modread  = PackBits(si, 5, DemodBuffer); si += 5+2+1; \r
                //uint8_t pskcr   = PackBits(si, 2, DemodBuffer); si += 2+1;  //could check psk cr\r
-               uint8_t nml01    = PackBits(si, 1, DemodBuffer); si += 1+5;   //bit 24, 30, 31 could be tested for 0 if not extended mode\r
-               uint8_t nml02    = PackBits(si, 2, DemodBuffer); si += 2;\r
+               //uint8_t nml01    = PackBits(si, 1, DemodBuffer); si += 1+5;   //bit 24, 30, 31 could be tested for 0 if not extended mode\r
+               //uint8_t nml02    = PackBits(si, 2, DemodBuffer); si += 2;\r
                \r
                //if extended mode\r
                bool extMode =( (safer == 0x6 || safer == 0x9) && extend) ? TRUE : FALSE;\r
 \r
                if (!extMode){\r
-                       if (nml01 || nml02 || xtRate) continue;\r
+                       if (xtRate) continue;  //nml01 || nml02 ||  caused issues on noralys tags\r
                }\r
                //test modulation\r
                if (!testModulation(mode, modread)) continue;\r
@@ -838,6 +872,7 @@ int printConfiguration( t55xx_conf_block_t b){
        PrintAndLog("Bit Rate   : %s", GetBitRateStr(b.bitrate) );\r
        PrintAndLog("Inverted   : %s", (b.inverted) ? "Yes" : "No" );\r
        PrintAndLog("Offset     : %d", b.offset);\r
+       PrintAndLog("Seq. Term. : %s", (b.ST) ? "Yes" : "No" );\r
        PrintAndLog("Block0     : 0x%08X", b.block0);\r
        PrintAndLog("");\r
        return 0;\r
@@ -956,8 +991,7 @@ int CmdT55xxReadTrace(const char *Cmd) {
 \r
        if ( config.Q5 ){\r
                if (!DecodeT5555TraceBlock()) return 0;\r
-       }\r
-       else {\r
+       } else {\r
                if (!DecodeT55xxBlock()) return 0;\r
        }\r
        \r
@@ -1009,7 +1043,7 @@ int CmdT55xxReadTrace(const char *Cmd) {
                \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
+               t55x7_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
@@ -1033,14 +1067,13 @@ int CmdT55xxReadTrace(const char *Cmd) {
                else\r
                        data.year += 2010;\r
 \r
-               \r
-               printT55xxTrace(data, repeat);\r
+               printT55x7Trace(data, repeat);\r
        }\r
        return 0;\r
 }\r
 \r
-void printT55xxTrace( t55xx_tracedata_t data, uint8_t repeat ){\r
-       PrintAndLog("-- T55xx Trace Information ----------------------------------");\r
+void printT55x7Trace( t55x7_tracedata_t data, uint8_t repeat ){\r
+       PrintAndLog("-- T55x7 Trace Information ----------------------------------");\r
        PrintAndLog("-------------------------------------------------------------");\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
@@ -1074,6 +1107,7 @@ void printT55xxTrace( t55xx_tracedata_t data, uint8_t repeat ){
                18-32   DW,  die number sequential\r
        */\r
 }\r
+\r
 void printT5555Trace( t5555_tracedata_t data, uint8_t repeat ){\r
        PrintAndLog("-- T5555 (Q5) Trace Information -----------------------------");\r
        PrintAndLog("-------------------------------------------------------------");\r
@@ -1101,6 +1135,7 @@ void printT5555Trace( t5555_tracedata_t data, uint8_t repeat ){
        */\r
 }\r
 \r
+//need to add Q5 info...\r
 int CmdT55xxInfo(const char *Cmd){\r
        /*\r
                Page 0 Block 0 Configuration data.\r
@@ -1144,7 +1179,7 @@ int CmdT55xxInfo(const char *Cmd){
        \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
+       PrintAndLog("-- T55x7 Configuration & Tag Information --------------------");\r
        PrintAndLog("-------------------------------------------------------------");\r
        PrintAndLog(" Safer key                 : %s", GetSaferStr(safer));\r
        PrintAndLog(" reserved                  : %d", resv);\r
@@ -1377,17 +1412,18 @@ int CmdT55xxBruteForce(const char *Cmd) {
        char buf[9];\r
        char filename[FILE_PATH_SIZE]={0};\r
        int     keycnt = 0;\r
+       int ch;\r
        uint8_t stKeyBlock = 20;\r
-       uint8_t *keyBlock = NULL, *p;\r
-       keyBlock = calloc(stKeyBlock, 6);\r
-       if (keyBlock == NULL) return 1;\r
-       \r
+       uint8_t *keyBlock = NULL, *p = NULL;\r
     uint32_t start_password = 0x00000000; //start password\r
     uint32_t end_password   = 0xFFFFFFFF; //end   password\r
     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') return usage_t55xx_bruteforce();\r
+\r
+       keyBlock = calloc(stKeyBlock, 6);\r
+       if (keyBlock == NULL) return 1;\r
 \r
        if (cmdp == 'i' || cmdp == 'I') {\r
        \r
@@ -1423,6 +1459,7 @@ 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
@@ -1437,6 +1474,7 @@ 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
@@ -1446,8 +1484,10 @@ int CmdT55xxBruteForce(const char *Cmd) {
                for (uint16_t c = 0; c < keycnt; ++c ) {\r
        \r
                        if (ukbhit()) {\r
-                               getchar();\r
+                               ch = getchar();\r
+                               (void)ch;\r
                                printf("\naborted via keyboard!\n");\r
+                               free(keyBlock);\r
                                return 0;\r
                        }\r
                \r
@@ -1458,6 +1498,7 @@ 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
                                return 0;\r
                        }\r
                        \r
@@ -1465,10 +1506,12 @@ int CmdT55xxBruteForce(const char *Cmd) {
 \r
                        if ( found ) {\r
                                PrintAndLog("Found valid password: [%08X]", testpwd);\r
+                               free(keyBlock);\r
                                return 0;\r
                        } \r
                }\r
                PrintAndLog("Password NOT found.");\r
+               free(keyBlock);\r
                return 0;\r
        }\r
        \r
@@ -1478,7 +1521,10 @@ 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
@@ -1489,13 +1535,16 @@ int CmdT55xxBruteForce(const char *Cmd) {
                printf(".");\r
                fflush(stdout);\r
                if (ukbhit()) {\r
-                       getchar();\r
+                       ch = getchar();\r
+                       (void)ch;\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
@@ -1510,9 +1559,101 @@ 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
+int tryOnePassword(uint32_t password)\r
+{\r
+       PrintAndLog("Trying password %08x", password);\r
+       if (!AquireData(T55x7_PAGE0, T55x7_CONFIGURATION_BLOCK, TRUE, password)) {\r
+               PrintAndLog("Aquireing data from device failed. Quitting");\r
+               return -1;\r
+       }\r
+\r
+       if (tryDetectModulation())\r
+               return 1;\r
+       else return 0;\r
+}\r
+\r
+int CmdT55xxRecoverPW(const char *Cmd) {\r
+       int bit = 0;\r
+       uint32_t orig_password = 0x0;\r
+       uint32_t curr_password = 0x0;\r
+       uint32_t prev_password = 0xffffffff;\r
+       uint32_t mask = 0x0;\r
+       int found = 0;\r
+\r
+       char cmdp = param_getchar(Cmd, 0);\r
+       if (cmdp == 'h' || cmdp == 'H') return usage_t55xx_recoverpw();\r
+\r
+       orig_password = param_get32ex(Cmd, 0, 0x51243648, 16); //password used by handheld cloners\r
+\r
+       // first try fliping each bit in the expected password\r
+       while ((found != 1) && (bit < 32)) {\r
+               curr_password = orig_password ^ ( 1 << bit );\r
+               found = tryOnePassword(curr_password);\r
+               if (found == 1)\r
+                       goto done;\r
+               else if (found == -1)\r
+                       return 0;\r
+               bit++;\r
+       }\r
+\r
+       // now try to use partial original password, since block 7 should have been completely\r
+       // erased during the write sequence and it is possible that only partial password has been\r
+       // written\r
+       // not sure from which end the bit bits are written, so try from both ends \r
+       // from low bit to high bit\r
+       bit = 0;\r
+       while ((found != 1) && (bit < 32)) {\r
+               mask += ( 1 << bit );\r
+               curr_password = orig_password & mask;\r
+               // if updated mask didn't change the password, don't try it again\r
+               if (prev_password == curr_password) {\r
+                       bit++;\r
+                       continue;\r
+               }\r
+               found = tryOnePassword(curr_password);\r
+               if (found == 1)\r
+                       goto done;\r
+               else if (found == -1)\r
+                       return 0;\r
+               bit++;\r
+               prev_password=curr_password;\r
+       }\r
+\r
+       // from high bit to low\r
+       bit = 0;\r
+       mask = 0xffffffff;\r
+       while ((found != 1) && (bit < 32)) {\r
+               mask -= ( 1 << bit );\r
+               curr_password = orig_password & mask;\r
+               // if updated mask didn't change the password, don't try it again\r
+               if (prev_password == curr_password) {\r
+                       bit++;\r
+                       continue;\r
+               }\r
+               found = tryOnePassword(curr_password);\r
+               if (found == 1)\r
+                       goto done;\r
+               else if (found == -1)\r
+                       return 0;\r
+               bit++;\r
+               prev_password=curr_password;\r
+       }\r
+done:\r
+       PrintAndLog("");\r
+\r
+       if (found == 1)\r
+               PrintAndLog("Found valid password: [%08x]", curr_password);\r
+       else\r
+               PrintAndLog("Password NOT found.");\r
+\r
+       return 0;\r
+}\r
+\r
 static command_t CommandTable[] = {\r
        {"help",                CmdHelp,           1, "This help"},\r
        {"bruteforce",CmdT55xxBruteForce,0, "<start password> <end password> [i <*.dic>] Simple bruteforce attack to find password"},\r
@@ -1522,20 +1663,22 @@ static command_t CommandTable[] = {
        {"info",                CmdT55xxInfo,      1, "[1] Show T55x7 configuration data (page 0/ blk 0)"},\r
        {"read",                CmdT55xxReadBlock, 0, "b <block> p [password] [o] [1] -- Read T55xx block data. Optional [p password], [override], [page1]"},\r
        {"resetread",   CmdResetRead,      0, "Send Reset Cmd then lf read the stream to attempt to identify the start of it (needs a demod and/or plot after)"},\r
+       {"recoverpw",   CmdT55xxRecoverPW, 0, "[password] Try to recover from bad password write from a cloner. Only use on PW protected chips!"},\r
        {"special",             special,           0, "Show block changes with 64 different offsets"},  \r
        {"trace",               CmdT55xxReadTrace, 1, "[1] Show T55x7 traceability data (page 1/ blk 0-1)"},\r
        {"wakeup",              CmdT55xxWakeUp,    0, "Send AOR wakeup command"},\r
-       {"wipe",                CmdT55xxWipe,      0, "Wipe a T55xx tag and set defaults (will destroy any data on tag)"},\r
+       {"wipe",                CmdT55xxWipe,      0, "[q] Wipe a T55xx tag and set defaults (will destroy any data on tag)"},\r
        {"write",               CmdT55xxWriteBlock,0, "b <block> d <data> p [password] [1] -- Write T55xx block data. Optional [p password], [page1]"},\r
        {NULL, NULL, 0, NULL}\r
 };\r
 \r
 int CmdLFT55XX(const char *Cmd) {\r
-  CmdsParse(CommandTable, Cmd);\r
-  return 0;\r
+       clearCommandBuffer();\r
+       CmdsParse(CommandTable, Cmd);\r
+       return 0;\r
 }\r
 \r
 int CmdHelp(const char *Cmd) {\r
-  CmdsHelp(CommandTable);\r
-  return 0;\r
+       CmdsHelp(CommandTable);\r
+       return 0;\r
 }\r
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