int usage_t55xx_config(){\r
PrintAndLog("Usage: lf t55xx config [d <demodulation>] [i 1] [o <offset>] [Q5]");\r
PrintAndLog("Options:");\r
- PrintAndLog(" h This help");\r
- PrintAndLog(" b <8|16|32|40|50|64|100|128> Set bitrate");\r
- PrintAndLog(" d <FSK|FSK1|FSK1a|FSK2|FSK2a|ASK|PSK1|PSK2|NRZ|BI|BIa> Set demodulation FSK / ASK / PSK / NRZ / Biphase / Biphase A");\r
- 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(" h - This help");\r
+ PrintAndLog(" b <8|16|32|40|50|64|100|128> - Set bitrate");\r
+ PrintAndLog(" d <FSK|FSK1|FSK1a|FSK2|FSK2a|ASK|PSK1|PSK2|NRZ|BI|BIa> - Set demodulation FSK / ASK / PSK / NRZ / Biphase / Biphase A");\r
+ 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
int usage_t55xx_trace() {\r
PrintAndLog("Usage: lf t55xx trace [1]");\r
PrintAndLog("Options:");\r
- PrintAndLog(" [graph buffer data] - if set, use Graphbuffer otherwise read data from tag.");\r
+ PrintAndLog(" 1 - if set, use Graphbuffer otherwise read data from tag.");\r
PrintAndLog("");\r
PrintAndLog("Examples:");\r
PrintAndLog(" lf t55xx trace");\r
int usage_t55xx_info() {\r
PrintAndLog("Usage: lf t55xx info [1]");\r
PrintAndLog("Options:");\r
- PrintAndLog(" [graph buffer data] - if set, use Graphbuffer otherwise read data from tag.");\r
+ PrintAndLog(" 1 - if set, use Graphbuffer otherwise read data from tag.");\r
PrintAndLog("");\r
PrintAndLog("Examples:");\r
PrintAndLog(" lf t55xx info");\r
int usage_t55xx_bruteforce(){\r
PrintAndLog("This command uses A) bruteforce to scan a number range");\r
PrintAndLog(" B) a dictionary attack");\r
- PrintAndLog("Usage: lf t55xx bruteforce <start password> <end password> [i <*.dic>]");\r
+ PrintAndLog("Usage: lf t55xx bruteforce [h] <start password> <end password> [i <*.dic>]");\r
PrintAndLog(" password must be 4 bytes (8 hex symbols)");\r
PrintAndLog("Options:");\r
PrintAndLog(" h - this help");\r
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
return (bool) ASKDemod("64 0 1", FALSE, FALSE, 1);\r
}\r
\r
+// sanity check. Don't use proxmark if it is offline and you didn't specify useGraphbuf\r
+static int SanityOfflineCheck( bool useGraphBuffer ){\r
+ if ( !useGraphBuffer && offline) {\r
+ PrintAndLog("Your proxmark3 device is offline. Specify [1] to use graphbuffer data instead");\r
+ return 0;\r
+ }\r
+ return 1;\r
+}\r
\r
int CmdT55xxDetect(const char *Cmd){\r
bool errors = FALSE;\r
}\r
if (errors) return usage_t55xx_detect();\r
\r
+ // sanity check.\r
+ if (!SanityOfflineCheck(useGB)) return 1;\r
+ \r
if ( !useGB) {\r
if ( !AquireData(T55x7_PAGE0, T55x7_CONFIGURATION_BLOCK, usepwd, password) )\r
- return 0;\r
+ return 1;\r
}\r
\r
if ( !tryDetectModulation() )\r
PrintAndLog("Could not detect modulation automatically. Try setting it manually with \'lf t55xx config\'");\r
\r
- return 1;\r
+ return 0;\r
}\r
\r
// detect configuration?\r
uint32_t password = 0; \r
if (strlen(Cmd) > 1 || cmdp == 'h' || cmdp == 'H') return usage_t55xx_trace();\r
\r
- if (strlen(Cmd)==0)\r
+ if (strlen(Cmd)==0) {\r
+ // sanity check.\r
+ if (!SanityOfflineCheck(FALSE)) return 1;\r
+\r
if ( !AquireData( T55x7_PAGE1, REGULAR_READ_MODE_BLOCK, pwdmode, password ) )\r
- return 0;\r
+ return 1;\r
+ }\r
\r
if ( config.Q5 ){\r
- if (!DecodeT5555TraceBlock()) return 0;\r
+ if (!DecodeT5555TraceBlock()) return 1;\r
} else {\r
- if (!DecodeT55xxBlock()) return 0;\r
+ if (!DecodeT55xxBlock()) return 1;\r
}\r
\r
- if ( !DemodBufferLen ) return 0;\r
+ if ( !DemodBufferLen ) return 1;\r
\r
RepaintGraphWindow();\r
uint8_t repeat = (config.offset > 5) ? 32 : 0;\r
\r
if (hdr != 0x1FF) {\r
PrintAndLog("Invalid Q5 Trace data header (expected 0x1FF, found %X)", hdr);\r
- return 0;\r
+ return 1;\r
}\r
\r
t5555_tracedata_t data = {.bl1 = bl1, .bl2 = bl2, .icr = 0, .lotidc = '?', .lotid = 0, .wafer = 0, .dw =0};\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
+ return 1;\r
}\r
\r
data.mfc = PackBits(si, 8, DemodBuffer); si += 8;\r
\r
if (strlen(Cmd) > 1 || cmdp == 'h' || cmdp == 'H') return usage_t55xx_info();\r
\r
- if (strlen(Cmd)==0)\r
+ if (strlen(Cmd)==0){\r
+ // sanity check.\r
+ if (!SanityOfflineCheck(FALSE)) return 1;\r
+ \r
if ( !AquireData( T55x7_PAGE0, T55x7_CONFIGURATION_BLOCK, pwdmode, password ) )\r
return 1;\r
+ }\r
\r
if (!DecodeT55xxBlock()) return 1;\r
\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
+ {"bruteforce", CmdT55xxBruteForce,0, "<start password> <end password> [i <*.dic>] Simple bruteforce attack to find password"},\r
{"config", CmdT55xxSetConfig, 1, "Set/Get T55XX configuration (modulation, inverted, offset, rate)"},\r
{"detect", CmdT55xxDetect, 1, "[1] Try detecting the tag modulation from reading the configuration block."},\r
{"dump", CmdT55xxDump, 0, "[password] [o] Dump T55xx card block 0-7. Optional [password], [override]"},\r
{"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
projects / proxmark3-svn / blobdiff