X-Git-Url: https://git.zerfleddert.de/cgi-bin/gitweb.cgi/proxmark3-svn/blobdiff_plain/59fc313d9907729397aa27d3b8f90455aa53d81e..de39bf505ab3a2f4166e858cc448e3ef45b7092f:/client/cmdhflegic.c?ds=sidebyside diff --git a/client/cmdhflegic.c b/client/cmdhflegic.c index 1b323796..62c43f04 100644 --- a/client/cmdhflegic.c +++ b/client/cmdhflegic.c @@ -14,58 +14,61 @@ static int CmdHelp(const char *Cmd); #define MAX_LENGTH 1024 int usage_legic_calccrc(void){ - PrintAndLog("Calculates the legic crc8/crc16 on the input hexbytes."); + PrintAndLog("Calculates the legic crc8/crc16 on the given data."); PrintAndLog("There must be an even number of hexsymbols as input."); - PrintAndLog("Usage: hf legic crc [h] b u c "); + PrintAndLog("Usage: hf legic crc [h] d u c <8|16>"); PrintAndLog("Options:"); PrintAndLog(" h : this help"); - PrintAndLog(" b : hex bytes"); + PrintAndLog(" d : (hex symbols) bytes to calculate crc over"); PrintAndLog(" u : MCC hexbyte"); - PrintAndLog(" c : 8|16 bit crc size"); + PrintAndLog(" c <8|16> : Crc type"); PrintAndLog(""); PrintAndLog("Samples:"); PrintAndLog(" hf legic crc b deadbeef1122"); PrintAndLog(" hf legic crc b deadbeef1122 u 9A c 16"); return 0; } -int usage_legic_load(void){ - PrintAndLog("It loads datasamples from the file `filename` to device memory"); - PrintAndLog("Usage: hf legic load [h] "); - PrintAndLog("Options:"); - PrintAndLog(" h : this help"); - PrintAndLog(" : Name of file to load"); - PrintAndLog(""); - PrintAndLog("Samples:"); - PrintAndLog(" hf legic load filename"); - return 0; -} int usage_legic_rdmem(void){ PrintAndLog("Read data from a legic tag."); PrintAndLog("Usage: hf legic rdmem [h] "); PrintAndLog("Options:"); - PrintAndLog(" h : this help"); - PrintAndLog(" : offset in data array to start download from (hex)"); - PrintAndLog(" : number of bytes to read (hex)"); - PrintAndLog(" : (optional) Initialization vector to use (hex, odd and 7bits)"); + PrintAndLog(" h : this help"); + PrintAndLog(" : (hex) offset in data array to start download from"); + PrintAndLog(" : (hex) number of bytes to read"); + PrintAndLog(" : (hex) (optional) Initialization vector to use. Must be odd and 7bits max"); PrintAndLog(""); PrintAndLog("Samples:"); - PrintAndLog(" hf legic rdmem 0 21 - reads from byte[0] 21 bytes(system header)"); - PrintAndLog(" hf legic rdmem 0 4 55 - reads from byte[0] 4 bytes with IV 0x55"); - PrintAndLog(" hf legic rdmem 0 100 55 - reads 256bytes with IV 0x55"); + PrintAndLog(" hf legic rdmem 0 16 - reads from byte[0] 0x16 bytes(system header)"); + PrintAndLog(" hf legic rdmem 0 4 55 - reads from byte[0] 0x4 bytes with IV 0x55"); + PrintAndLog(" hf legic rdmem 0 100 55 - reads 0x100 bytes with IV 0x55"); return 0; } int usage_legic_sim(void){ - PrintAndLog("Missing help text."); + PrintAndLog("Simulates a LEGIC Prime tag. MIM22, MIM256, MIM1024 types can be emulated"); + PrintAndLog("Use eload/esave to upload a dump into emulator memory"); + PrintAndLog("Usage: hf legic sim [h] "); + PrintAndLog("Options:"); + PrintAndLog(" h : this help"); + PrintAndLog(" : 0 = MIM22"); + PrintAndLog(" : 1 = MIM256 (default)"); + PrintAndLog(" : 2 = MIM1024"); + PrintAndLog(" : phase drift"); + PrintAndLog(" : frame drift"); + PrintAndLog(" : reqresp drift"); + PrintAndLog(""); + PrintAndLog("Samples:"); + PrintAndLog(" hf legic sim"); + PrintAndLog(" hf legic sim "); return 0; } int usage_legic_write(void){ - PrintAndLog(" Write sample buffer to a legic tag. (use after load or read)"); + PrintAndLog("Write data to a LEGIC Prime tag. It autodetects tagsize to make sure size"); PrintAndLog("Usage: hf legic write [h] o d "); PrintAndLog("Options:"); - PrintAndLog(" h : this help"); - PrintAndLog(" o : offset in data array to start writing"); + PrintAndLog(" h : this help"); + PrintAndLog(" o : (hex) offset in data array to start writing"); //PrintAndLog(" : (optional) Initialization vector to use (ODD and 7bits)"); - PrintAndLog(" d : bytes to write (hex symbols)"); + PrintAndLog(" d : (hex symbols) bytes to write "); PrintAndLog(""); PrintAndLog("Samples:"); PrintAndLog(" hf legic write o 10 d 11223344 - Write 0x11223344 starting from offset 0x10"); @@ -75,7 +78,7 @@ int usage_legic_reader(void){ PrintAndLog("Read UID and type information from a legic tag."); PrintAndLog("Usage: hf legic reader [h]"); PrintAndLog("Options:"); - PrintAndLog(" h : this help"); + PrintAndLog(" h : this help"); PrintAndLog(""); PrintAndLog("Samples:"); PrintAndLog(" hf legic reader"); @@ -86,58 +89,76 @@ int usage_legic_info(void){ PrintAndLog("Shows systemarea, user areas etc"); PrintAndLog("Usage: hf legic info [h]"); PrintAndLog("Options:"); - PrintAndLog(" h : this help"); + PrintAndLog(" h : this help"); PrintAndLog(""); PrintAndLog("Samples:"); PrintAndLog(" hf legic info"); return 0; } int usage_legic_dump(void){ - PrintAndLog("Reads all pages from LEGIC MIM22, MIM256, MIM1024"); + PrintAndLog("Reads all pages from LEGIC Prime MIM22, MIM256, MIM1024"); PrintAndLog("and saves binary dump into the file `filename.bin` or `cardUID.bin`"); PrintAndLog("It autodetects card type.\n"); PrintAndLog("Usage: hf legic dump [h] o "); PrintAndLog("Options:"); - PrintAndLog(" h : this help"); - PrintAndLog(" n : filename w/o .bin to save the dump as"); + PrintAndLog(" h : this help"); + PrintAndLog(" o : filename w/o '.bin' to dump bytes"); PrintAndLog(""); PrintAndLog("Samples:"); PrintAndLog(" hf legic dump"); PrintAndLog(" hf legic dump o myfile"); return 0; } +int usage_legic_restore(void){ + PrintAndLog("Reads binary file and it autodetects card type and verifies that the file has the same size"); + PrintAndLog("Then write the data back to card. All bytes except the first 7bytes [UID(4) MCC(1) DCF(2)]\n"); + PrintAndLog("Usage: hf legic restore [h] i "); + PrintAndLog("Options:"); + PrintAndLog(" h : this help"); + PrintAndLog(" i : filename w/o '.bin' to restore bytes on to card from"); + PrintAndLog(""); + PrintAndLog("Samples:"); + PrintAndLog(" hf legic restore i myfile"); + return 0; +} int usage_legic_eload(void){ PrintAndLog("It loads binary dump from the file `filename.bin`"); PrintAndLog("Usage: hf legic eload [h] [card memory] "); PrintAndLog("Options:"); - PrintAndLog(" h : this help"); - PrintAndLog(" [card memory] : 0 = MIM22"); - PrintAndLog(" : 1 = MIM256 (default)"); - PrintAndLog(" : 2 = MIM1024"); - PrintAndLog(" : filename w/o .bin to load"); + PrintAndLog(" h : this help"); + PrintAndLog(" [card memory] : 0 = MIM22"); + PrintAndLog(" : 1 = MIM256 (default)"); + PrintAndLog(" : 2 = MIM1024"); + PrintAndLog(" : filename w/o .bin to load"); PrintAndLog(""); PrintAndLog("Samples:"); - PrintAndLog(" hf legic eload filename"); - PrintAndLog(" hf legic eload 2 filename"); + PrintAndLog(" hf legic eload 2 myfile"); return 0; } int usage_legic_esave(void){ PrintAndLog("It saves binary dump into the file `filename.bin` or `cardID.bin`"); PrintAndLog(" Usage: hf legic esave [h] [card memory] [file name w/o `.bin`]"); PrintAndLog("Options:"); - PrintAndLog(" h : this help"); - PrintAndLog(" [card memory] : 0 = MIM22"); - PrintAndLog(" : 1 = MIM256 (default)"); - PrintAndLog(" : 2 = MIM1024"); - PrintAndLog(" : filename w/o .bin to load"); + PrintAndLog(" h : this help"); + PrintAndLog(" [card memory] : 0 = MIM22"); + PrintAndLog(" : 1 = MIM256 (default)"); + PrintAndLog(" : 2 = MIM1024"); + PrintAndLog(" : filename w/o .bin to load"); PrintAndLog(""); PrintAndLog("Samples:"); - PrintAndLog(" hf legic esave "); - PrintAndLog(" hf legic esave 2"); - PrintAndLog(" hf legic esave 2 filename"); + PrintAndLog(" hf legic esave 2 myfile"); + return 0; +} +int usage_legic_wipe(void){ + PrintAndLog("Fills a legic tag memory with zeros. From byte7 and to the end."); + PrintAndLog(" Usage: hf legic wipe [h]"); + PrintAndLog("Options:"); + PrintAndLog(" h : this help"); + PrintAndLog(""); + PrintAndLog("Samples:"); + PrintAndLog(" hf legic wipe"); return 0; } - /* * Output BigBuf and deobfuscate LEGIC RF tag data. * This is based on information given in the talk held @@ -194,7 +215,7 @@ int CmdLegicInfo(const char *Cmd) { data[6] ); - } else if(dcf > 60000) { // Master token? + } else if (dcf > 60000) { // Master token? int fl = 0; @@ -443,10 +464,20 @@ int CmdLegicRdmem(const char *Cmd) { uint32_t offset = 0, len = 0, IV = 1; sscanf(Cmd, "%x %x %x", &offset, &len, &IV); + // tagtype + legic_card_select_t card; + if (legic_get_type(&card)) { + PrintAndLog("Failed to identify tagtype"); + return 1; + } + + legic_print_type(card.cardsize, 0); + // OUT-OF-BOUNDS check - if ( len + offset > MAX_LENGTH ) { - len = MAX_LENGTH - offset; - PrintAndLog("Out-of-bound, shorten len to %d (0x%02X)", len, len); + // UID 4 bytes can't be written to. + if ( len + offset >= card.cardsize ) { + len = card.cardsize - offset; + PrintAndLog("Out-of-bounds, Cardsize = %d, Trunc offset+len = %d", card.cardsize, len + offset); } legic_chk_iv(&IV); @@ -484,151 +515,16 @@ int CmdLegicRdmem(const char *Cmd) { return 1; } - PrintAndLog("\n ## | Data"); - PrintAndLog("-----+-----"); + PrintAndLog("\n ## | 0 1 2 3 4 5 6 7 8 9 A B C D E F 10 11 12 13 14 15 16 17 18 19 1A 1B 1C 1D 1E 1F"); + PrintAndLog("-----+------------------------------------------------------------------------------------------------"); print_hex_break( data, readlen, 32); free(data); return 0; } -// load, filename (ascii hex textfile) -// uploads it to device mem -int CmdLegicLoad(const char *Cmd) { - -// iceman: potential bug, where all filepaths or filename which starts with H or h will print the helptext :) - char cmdp = param_getchar(Cmd, 0); - if ( cmdp == 'H' || cmdp == 'h' || cmdp == 0x00) return usage_legic_load(); - - char filename[FILE_PATH_SIZE] = {0x00}; - int len = strlen(Cmd); - - if (len > FILE_PATH_SIZE) { - PrintAndLog("Filepath too long (was %s bytes), max allowed is %s ", len, FILE_PATH_SIZE); - return 0; - } - memcpy(filename, Cmd, len); - - FILE *f = fopen(filename, "r"); - if(!f) { - PrintAndLog("couldn't open '%s'", Cmd); - return -1; - } - - char line[80]; - int offset = 0; - uint8_t data[USB_CMD_DATA_SIZE] = {0x00}; - int index = 0; - int totalbytes = 0; - while ( fgets(line, sizeof(line), f) ) { - int res = sscanf(line, "%x %x %x %x %x %x %x %x", - (unsigned int *)&data[index], - (unsigned int *)&data[index + 1], - (unsigned int *)&data[index + 2], - (unsigned int *)&data[index + 3], - (unsigned int *)&data[index + 4], - (unsigned int *)&data[index + 5], - (unsigned int *)&data[index + 6], - (unsigned int *)&data[index + 7]); - - if(res != 8) { - PrintAndLog("Error: could not read samples"); - fclose(f); - return -1; - } - index += res; - - if ( index == USB_CMD_DATA_SIZE ){ - UsbCommand c = { CMD_DOWNLOADED_SIM_SAMPLES_125K, {offset, 0, 0}}; - memcpy(c.d.asBytes, data, sizeof(data)); - clearCommandBuffer(); - SendCommand(&c); - if ( !WaitForResponseTimeout(CMD_ACK, NULL, 1500)){ - PrintAndLog("Command execute timeout"); - fclose(f); - return 1; - } - offset += index; - totalbytes += index; - index = 0; - } - } - fclose(f); - - // left over bytes? - if ( index != 0 ) { - UsbCommand c = { CMD_DOWNLOADED_SIM_SAMPLES_125K, {offset, 0, 0}}; - memcpy(c.d.asBytes, data, 8); - clearCommandBuffer(); - SendCommand(&c); - if ( !WaitForResponseTimeout(CMD_ACK, NULL, 1500)){ - PrintAndLog("Command execute timeout"); - return 1; - } - totalbytes += index; - } - - PrintAndLog("loaded %u samples", totalbytes); - return 0; -} - -// Save, filename, num of bytes, starting offset. (in decimal) -// ie: "hf legic save nnn.txt 100 0 (saves the first 100bytes) -// (ascii hex textfile) -int CmdLegicSave(const char *Cmd) { - int requested = 1024; - int offset = 0; - int delivered = 0; - char filename[FILE_PATH_SIZE] = {0x00}; - uint8_t got[1024] = {0x00}; - - memset(filename, 0, FILE_PATH_SIZE); - - sscanf(Cmd, " %s %i %i", filename, &requested, &offset); - - /* If no length given save entire legic read buffer */ - /* round up to nearest 8 bytes so the saved data can be used with legicload */ - if (requested == 0) - requested = 1024; - - if (requested % 8 != 0) { - int remainder = requested % 8; - requested = requested + 8 - remainder; - } - - if (offset + requested > sizeof(got)) { - PrintAndLog("Tried to read past end of buffer, + > 1024"); - return 0; - } - - GetFromBigBuf(got, requested, offset); - if ( !WaitForResponseTimeout(CMD_ACK, NULL, 2000)){ - PrintAndLog("Command execute timeout"); - return 1; - } - - FILE *f = fopen(filename, "w"); - if(!f) { - PrintAndLog("couldn't open '%s'", Cmd+1); - return -1; - } - - for (int j = 0; j < requested; j += 8) { - fprintf(f, "%02x %02x %02x %02x %02x %02x %02x %02x\n", - got[j+0], got[j+1], got[j+2], got[j+3], - got[j+4], got[j+5], got[j+6], got[j+7] - ); - delivered += 8; - if (delivered >= requested) break; - } - - fclose(f); - PrintAndLog("saved %u samples", delivered); - return 0; -} - -//TODO: write a help text (iceman) // should say which tagtype // should load a tag to device mem. +// int phase, int frame, int reqresp int CmdLegicRfSim(const char *Cmd) { UsbCommand c = {CMD_SIMULATE_TAG_LEGIC_RF, {6,3,0}}; sscanf(Cmd, " %"lli" %"lli" %"lli, &c.arg[0], &c.arg[1], &c.arg[2]); @@ -664,11 +560,19 @@ int CmdLegicRfWrite(const char *Cmd) { errors = true; break; } + + // limit number of bytes to write. This is not a 'restore' command. + if ( (len>>1) > 100 ){ + PrintAndLog("Max bound on 100bytes to write a one time."); + PrintAndLog("Use the 'hf legic restore' command if you want to write the whole tag at once"); + errors = true; + } // it's possible for user to accidentally enter "b" parameter // more than once - we have to clean previous malloc if (data) free(data); + data = malloc(len >> 1); if ( data == NULL ) { PrintAndLog("Can't allocate memory. exiting"); @@ -686,7 +590,7 @@ int CmdLegicRfWrite(const char *Cmd) { break; case 'o': case 'O': - offset = param_get32ex(Cmd, cmdp+1, 4, 10); + offset = param_get32ex(Cmd, cmdp+1, 4, 16); cmdp += 2; break; case 'h': @@ -716,23 +620,42 @@ int CmdLegicRfWrite(const char *Cmd) { legic_print_type(card.cardsize, 0); - // OUT-OF-BOUNDS check - // UID 4 bytes can't be written to. - if ( len + offset + 4 >= card.cardsize ) { - PrintAndLog("Out-of-bounds, Cardsize = %d, [offset+len = %d ]", card.cardsize, len + offset + 4); + // OUT-OF-BOUNDS checks + // UID 4+1 bytes can't be written to. + if ( offset < 5 ) { + PrintAndLog("Out-of-bounds, bytes 0-1-2-3-4 can't be written to. Offset = %d", offset); + return -2; + } + + if ( len + offset >= card.cardsize ) { + PrintAndLog("Out-of-bounds, Cardsize = %d, [offset+len = %d ]", card.cardsize, len + offset); return -2; } + if (offset == 5 || offset == 6) { + PrintAndLog("############# DANGER ################"); + PrintAndLog("# changing the DCF is irreversible #"); + PrintAndLog("#####################################"); + char *answer = NULL; + answer = readline("do you really want to continue? y(es) n(o) : "); + bool overwrite = (answer[0] == 'y' || answer[0] == 'Y'); + if (!overwrite){ + PrintAndLog("command cancelled"); + return 0; + } + } + legic_chk_iv(&IV); PrintAndLog("Writing to tag"); - UsbCommand c = {CMD_WRITER_LEGIC_RF, {offset, len, IV}}; - memcpy(c.d.asBytes, data, len); - - clearCommandBuffer(); - SendCommand(&c); + + UsbCommand c = {CMD_WRITER_LEGIC_RF, {offset, len, IV}}; + memcpy(c.d.asBytes, data, len); UsbCommand resp; - if (!WaitForResponseTimeout(CMD_ACK, &resp, 4000)) { + clearCommandBuffer(); + SendCommand(&c); + + if (!WaitForResponseTimeout(CMD_ACK, &resp, 2000)) { PrintAndLog("command execution time out"); return 1; } @@ -741,22 +664,9 @@ int CmdLegicRfWrite(const char *Cmd) { PrintAndLog("failed writing tag"); return 1; } - - return 0; -} -/* -int CmdLegicRfRawWrite(const char *Cmd) { - PrintAndLog("############# DANGER !! #############"); - PrintAndLog("# changing the DCF is irreversible #"); - PrintAndLog("#####################################"); - PrintAndLog("do youe really want to continue? y(es) n(o)"); - // if (scanf(" %c", &answer) > 0 && (answer == 'y' || answer == 'Y')) { - // return 0; - // } - return 0; + return 0; } -*/ int CmdLegicCalcCrc(const char *Cmd){ @@ -899,7 +809,6 @@ void legic_seteml(uint8_t *src, uint32_t offset, uint32_t numofbytes) { memcpy(c.d.asBytes, src+i, len); clearCommandBuffer(); SendCommand(&c); - PrintAndLog("ICE: offset %d | len %d", i, len); } } @@ -1015,7 +924,8 @@ int CmdLegicDump(const char *Cmd){ else sprintf(fnameptr + fileNlen,".bin"); - if ((f = fopen(filename,"wb")) == NULL) { + f = fopen(filename,"wb"); + if (!f) { PrintAndLog("Could not create file name %s", filename); if (data) free(data); @@ -1028,6 +938,131 @@ int CmdLegicDump(const char *Cmd){ return 0; } +int CmdLegicRestore(const char *Cmd){ + + FILE *f; + char filename[FILE_PATH_SIZE] = {0x00}; + char *fnameptr = filename; + size_t fileNlen = 0; + bool errors = true; + uint16_t numofbytes; + uint8_t cmdp = 0; + + memset(filename, 0, sizeof(filename)); + + while(param_getchar(Cmd, cmdp) != 0x00) { + switch(param_getchar(Cmd, cmdp)) { + case 'h': + case 'H': + errors = true; + break; + case 'i': + case 'I': + fileNlen = param_getstr(Cmd, cmdp+1, filename); + if (!fileNlen) + errors = true; + else + errors = false; + + if (fileNlen > FILE_PATH_SIZE-5) + fileNlen = FILE_PATH_SIZE-5; + cmdp += 2; + break; + default: + PrintAndLog("Unknown parameter '%c'", param_getchar(Cmd, cmdp)); + errors = true; + break; + } + if (errors) break; + } + + //Validations + if(errors) return usage_legic_restore(); + + // tagtype + legic_card_select_t card; + if (legic_get_type(&card)) { + PrintAndLog("Failed to identify tagtype"); + return 1; + } + numofbytes = card.cardsize; + + // set up buffer + uint8_t *data = malloc(numofbytes); + if (!data) { + PrintAndLog("Fail, cannot allocate memory"); + return 2; + } + memset(data, 0, numofbytes); + + legic_print_type(numofbytes, 0); + + // set up file + fnameptr += fileNlen; + sprintf(fnameptr, ".bin"); + + f = fopen(filename,"rb"); + if (!f) { + PrintAndLog("File %s not found or locked", filename); + return 3; + } + + // verify size of dumpfile is the same as card. + fseek(f, 0, SEEK_END); // seek to end of file + size_t filesize = ftell(f); // get current file pointer + fseek(f, 0, SEEK_SET); // seek back to beginning of file + + if ( filesize != numofbytes) { + PrintAndLog("Fail, filesize and cardsize is not equal. [%u != %u]", filesize, numofbytes); + free(data); + fclose(f); + return 4; + } + + // load file + size_t bytes_read = fread(data, 1, numofbytes, f); + fclose(f); + + if ( bytes_read == 0){ + PrintAndLog("File reading error"); + free(data); + return 2; + } + + PrintAndLog("Restoring to card"); + + // transfer to device + size_t len = 0; + UsbCommand c = {CMD_WRITER_LEGIC_RF, {0, 0, 0x55}}; + UsbCommand resp; + for(size_t i = 7; i < numofbytes; i += USB_CMD_DATA_SIZE) { + + len = MIN((numofbytes - i), USB_CMD_DATA_SIZE); + c.arg[0] = i; // offset + c.arg[1] = len; // number of bytes + memcpy(c.d.asBytes, data+i, len); + clearCommandBuffer(); + SendCommand(&c); + + if (!WaitForResponseTimeout(CMD_ACK, &resp, 4000)) { + PrintAndLog("command execution time out"); + free(data); + return 1; + } + uint8_t isOK = resp.arg[0] & 0xFF; + if ( !isOK ) { + PrintAndLog("failed writing tag [msg = %u]", resp.arg[1] & 0xFF); + free(data); + return 1; + } + PrintAndLog("Wrote chunk [offset %d | len %d | total %d", i, len, i+len); + } + + free(data); + PrintAndLog("\nWrote %d bytes to card from file %s", numofbytes, filename); + return 0; +} + int CmdLegicELoad(const char *Cmd) { FILE * f; char filename[FILE_PATH_SIZE]; @@ -1060,10 +1095,11 @@ int CmdLegicELoad(const char *Cmd) { if (len > FILE_PATH_SIZE - 5) len = FILE_PATH_SIZE - 5; fnameptr += len; - sprintf(fnameptr, ".bin"); + sprintf(fnameptr, ".bin"); // open file - if ((f = fopen(filename,"rb")) == NULL) { + f = fopen(filename,"rb"); + if (!f) { PrintAndLog("File %s not found or locked", filename); free(data); return 1; @@ -1075,9 +1111,11 @@ int CmdLegicELoad(const char *Cmd) { PrintAndLog("File reading error"); free(data); fclose(f); + f = NULL; return 2; } fclose(f); + f = NULL; // transfer to device legic_seteml(data, 0, numofbytes); @@ -1137,7 +1175,8 @@ int CmdLegicESave(const char *Cmd) { sprintf(fnameptr + fileNlen,".bin"); // open file - if ((f = fopen(filename,"wb")) == NULL) { + f = fopen(filename,"wb"); + if (!f) { PrintAndLog("Could not create file name %s", filename); free(data); return 1; @@ -1148,20 +1187,81 @@ int CmdLegicESave(const char *Cmd) { PrintAndLog("\nSaved %d bytes from emulator memory to file: %s", numofbytes, filename); return 0; } + +int CmdLegicWipe(const char *Cmd){ + + char cmdp = param_getchar(Cmd, 0); + + if ( cmdp == 'h' || cmdp == 'H') return usage_legic_wipe(); + // tagtype + legic_card_select_t card; + if (legic_get_type(&card)) { + PrintAndLog("Failed to identify tagtype"); + return 1; + } + + // set up buffer + uint8_t *data = malloc(card.cardsize); + if (!data) { + PrintAndLog("Fail, cannot allocate memory"); + return 2; + } + memset(data, 0, card.cardsize); + + legic_print_type(card.cardsize, 0); + + printf("Erasing"); + + // transfer to device + size_t len = 0; + UsbCommand c = {CMD_WRITER_LEGIC_RF, {0, 0, 0x55}}; + UsbCommand resp; + for(size_t i = 7; i < card.cardsize; i += USB_CMD_DATA_SIZE) { + + printf("."); + len = MIN((card.cardsize - i), USB_CMD_DATA_SIZE); + c.arg[0] = i; // offset + c.arg[1] = len; // number of bytes + memcpy(c.d.asBytes, data+i, len); + clearCommandBuffer(); + SendCommand(&c); + + if (!WaitForResponseTimeout(CMD_ACK, &resp, 4000)) { + PrintAndLog("command execution time out"); + free(data); + return 3; + } + uint8_t isOK = resp.arg[0] & 0xFF; + if ( !isOK ) { + PrintAndLog("failed writing tag [msg = %u]", resp.arg[1] & 0xFF); + free(data); + return 4; + } + } + printf("ok\n"); + return 0; +} + +int CmdLegicList(const char *Cmd) { + CmdHFList("legic"); + return 0; +} + static command_t CommandTable[] = { {"help", CmdHelp, 1, "This help"}, - {"reader", CmdLegicReader, 1, "LEGIC Prime Reader UID and Type tag info"}, + {"reader", CmdLegicReader, 1, "LEGIC Prime Reader UID and tag info"}, {"info", CmdLegicInfo, 0, "Display deobfuscated and decoded LEGIC Prime tag data"}, - {"dump", CmdLegicDump, 0, "Dump LEGIC Prime card to binary file"}, - {"rdmem", CmdLegicRdmem, 0, "[offset][length] -- read bytes from a LEGIC card"}, - {"save", CmdLegicSave, 0, " [] -- Store samples"}, - {"load", CmdLegicLoad, 0, " -- Restore samples"}, - {"sim", CmdLegicRfSim, 0, "[phase drift [frame drift [req/resp drift]]] Start tag simulator (use after load or read)"}, - {"write", CmdLegicRfWrite, 0, "Write data to tag"}, - {"crc", CmdLegicCalcCrc, 1, "Calculate Legic CRC over given hexbytes"}, + {"dump", CmdLegicDump, 0, "Dump LEGIC Prime tag to binary file"}, + {"restore", CmdLegicRestore, 0, "Restore a dump onto a LEGIC Prime tag"}, + {"rdmem", CmdLegicRdmem, 0, "Read bytes from a LEGIC Prime tag"}, + {"sim", CmdLegicRfSim, 0, "Start tag simulator"}, + {"write", CmdLegicRfWrite, 0, "Write data to a LEGIC Prime tag"}, + {"crc", CmdLegicCalcCrc, 1, "Calculate Legic CRC over given bytes"}, {"eload", CmdLegicELoad, 1, "Load binary dump to emulator memory"}, {"esave", CmdLegicESave, 1, "Save emulator memory to binary file"}, + {"list", CmdLegicList, 1, "[Deprecated] List LEGIC history"}, + {"wipe", CmdLegicWipe, 1, "Wipe a LEGIC Prime tag"}, {NULL, NULL, 0, NULL} };