#define MAX_LENGTH 1024
-int usage_legic_calccrc8(void){
- PrintAndLog("Calculates the legic crc8/crc16 on the input hexbytes.");
+int usage_legic_calccrc(void){
+ 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 crc8 [h] b <hexbytes> u <uidcrc> c <crc type>");
+ PrintAndLog("Usage: hf legic crc [h] d <data> u <uidcrc> c <8|16>");
PrintAndLog("Options:");
PrintAndLog(" h : this help");
- PrintAndLog(" b <hexbytes> : hex bytes");
+ PrintAndLog(" d <data> : (hex symbols) bytes to calculate crc over");
PrintAndLog(" u <uidcrc> : MCC hexbyte");
- PrintAndLog(" c <crc type> : 8|16 bit crc size");
+ PrintAndLog(" c <8|16> : Crc type");
PrintAndLog("");
PrintAndLog("Samples:");
- PrintAndLog(" hf legic crc8 b deadbeef1122");
- PrintAndLog(" hf legic crc8 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] <file name>");
- PrintAndLog("Options:");
- PrintAndLog(" h : this help");
- PrintAndLog(" <filename> : Name of file to load");
- PrintAndLog("");
- PrintAndLog("Samples:");
- PrintAndLog(" hf legic load filename");
+ PrintAndLog(" hf legic crc b deadbeef1122");
+ PrintAndLog(" hf legic crc b deadbeef1122 u 9A c 16");
return 0;
}
int usage_legic_rdmem(void){
PrintAndLog("Read data from a legic tag.");
PrintAndLog("Usage: hf legic rdmem [h] <offset> <length> <IV>");
PrintAndLog("Options:");
- PrintAndLog(" h : this help");
- PrintAndLog(" <offset> : offset in data array to start download from (hex)");
- PrintAndLog(" <length> : number of bytes to read (hex)");
- PrintAndLog(" <IV> : (optional) Initialization vector to use (hex, odd and 7bits)");
+ PrintAndLog(" h : this help");
+ PrintAndLog(" <offset> : (hex) offset in data array to start download from");
+ PrintAndLog(" <length> : (hex) number of bytes to read");
+ PrintAndLog(" <IV> : (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.");
- return 0;
-}
-int usage_legic_write(void){
- PrintAndLog(" Write sample buffer to a legic tag. (use after load or read)");
- PrintAndLog("Usage: hf legic write [h] <offset> <length> <IV>");
+ 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] <tagtype> <phase> <frame> <reqresp>");
PrintAndLog("Options:");
- PrintAndLog(" h : this help");
- PrintAndLog(" <offset> : offset in data array to start writing from (hex)");
- PrintAndLog(" <length> : number of bytes to write (hex)");
- PrintAndLog(" <IV> : (optional) Initialization vector to use (ODD and 7bits)");
+ PrintAndLog(" h : this help");
+ PrintAndLog(" <tagtype> : 0 = MIM22");
+ PrintAndLog(" : 1 = MIM256 (default)");
+ PrintAndLog(" : 2 = MIM1024");
+ PrintAndLog(" <phase> : phase drift");
+ PrintAndLog(" <frame> : frame drift");
+ PrintAndLog(" <reqresp> : reqresp drift");
PrintAndLog("");
PrintAndLog("Samples:");
- PrintAndLog(" hf legic write 10 4 - writes 0x4 to byte[0x10]");
+ PrintAndLog(" hf legic sim");
+ PrintAndLog(" hf legic sim ");
return 0;
}
-int usage_legic_rawwrite(void){
- PrintAndLog("Write raw data direct to a specific offset on legic tag.");
- PrintAndLog("Usage: hf legic writeraw [h] <offset> <value> <IV>");
+int usage_legic_write(void){
+ PrintAndLog("Write data to a LEGIC Prime tag. It autodetects tagsize to make sure size");
+ PrintAndLog("Usage: hf legic write [h] o <offset> d <data (hex symbols)>");
PrintAndLog("Options:");
- PrintAndLog(" h : this help");
- PrintAndLog(" <offset> : offset to write to (hex)");
- PrintAndLog(" <value> : value (hex)");
- PrintAndLog(" <IV> : (optional) Initialization vector to use (hex, odd and 7bits)");
+ PrintAndLog(" h : this help");
+ PrintAndLog(" o <offset> : (hex) offset in data array to start writing");
+ //PrintAndLog(" <IV> : (optional) Initialization vector to use (ODD and 7bits)");
+ PrintAndLog(" d <data> : (hex symbols) bytes to write ");
PrintAndLog("");
PrintAndLog("Samples:");
- PrintAndLog(" hf legic writeraw 10 4 - writes 0x4 to byte[0x10]");
+ PrintAndLog(" hf legic write o 10 d 11223344 - Write 0x11223344 starting from offset 0x10");
return 0;
}
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");
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 <filename w/o .bin>");
PrintAndLog("Options:");
- PrintAndLog(" h : this help");
- PrintAndLog(" n <FN> : filename w/o .bin to save the dump as");
+ PrintAndLog(" h : this help");
+ PrintAndLog(" o <filename> : 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 <filename w/o .bin>");
+ PrintAndLog("Options:");
+ PrintAndLog(" h : this help");
+ PrintAndLog(" i <filename> : 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] <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> : filename w/o .bin to load");
+ PrintAndLog(" h : this help");
+ PrintAndLog(" [card memory] : 0 = MIM22");
+ PrintAndLog(" : 1 = MIM256 (default)");
+ PrintAndLog(" : 2 = MIM1024");
+ PrintAndLog(" <filename> : 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> : filename w/o .bin to load");
+ PrintAndLog(" h : this help");
+ PrintAndLog(" [card memory] : 0 = MIM22");
+ PrintAndLog(" : 1 = MIM256 (default)");
+ PrintAndLog(" : 2 = MIM1024");
+ PrintAndLog(" <filename> : 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
data[6]
);
- } else if(dcf > 60000) { // Master token?
+ } else if (dcf > 60000) { // Master token?
int fl = 0;
return 0;
}
+// params:
+// offset in data memory
+// number of bytes to read
int CmdLegicRdmem(const char *Cmd) {
- // params:
- // offset in data memory
- // number of bytes to read
char cmdp = param_getchar(Cmd, 0);
if ( cmdp == 'H' || cmdp == 'h' ) return usage_legic_rdmem();
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);
clearCommandBuffer();
SendCommand(&c);
UsbCommand resp;
- if (WaitForResponseTimeout(CMD_ACK, &resp, 3000)) {
- uint8_t isOK = resp.arg[0] & 0xFF;
- uint16_t readlen = resp.arg[1];
- if ( isOK ) {
-
- uint8_t *data = malloc(readlen);
- if ( !data ){
- PrintAndLog("Cannot allocate memory");
- return 2;
- }
-
- if ( readlen != len )
- PrintAndLog("Fail, only managed to read 0x%02X bytes", readlen);
-
- // copy data from device
- GetEMLFromBigBuf(data, readlen, 0);
- if ( !WaitForResponseTimeout(CMD_ACK, NULL, 2500)){
- PrintAndLog("Command execute timeout");
- if ( data )
- free(data);
- return 1;
- }
-
- PrintAndLog("\n ## | Data");
- PrintAndLog("-----+-----");
- print_hex_break( data, readlen, 32);
- } else {
- PrintAndLog("failed reading tag");
- }
- } else {
+ if ( !WaitForResponseTimeout(CMD_ACK, &resp, 3000) ) {
PrintAndLog("command execution time out");
return 1;
}
- 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;
+ uint8_t isOK = resp.arg[0] & 0xFF;
+ uint16_t readlen = resp.arg[1];
+ if ( !isOK ) {
+ PrintAndLog("failed reading tag");
+ return 2;
}
- 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]);
+ uint8_t *data = malloc(readlen);
+ if ( !data ){
+ PrintAndLog("Cannot allocate memory");
+ return 2;
+ }
- if(res != 8) {
- PrintAndLog("Error: could not read samples");
- fclose(f);
- return -1;
- }
- index += res;
+ if ( readlen != len )
+ PrintAndLog("Fail, only managed to read 0x%02X bytes", readlen);
- if ( index == USB_CMD_DATA_SIZE ){
-// PrintAndLog("sent %d | %d | %d", index, offset, totalbytes);
- 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, <bytes> + <offset> > 1024");
- return 0;
- }
-
- GetFromBigBuf(got, requested, offset);
- if ( !WaitForResponseTimeout(CMD_ACK, NULL, 2000)){
- PrintAndLog("Command execute timeout");
+ // copy data from device
+ GetEMLFromBigBuf(data, readlen, 0);
+ if ( !WaitForResponseTimeout(CMD_ACK, NULL, 2500)){
+ PrintAndLog("Command execute timeout");
+ free(data);
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);
+ 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;
}
-//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]);
+ sscanf(Cmd, " %" SCNi64 " %" SCNi64 " %" SCNi64 , &c.arg[0], &c.arg[1], &c.arg[2]);
clearCommandBuffer();
SendCommand(&c);
return 0;
int CmdLegicRfWrite(const char *Cmd) {
- // offset - in tag memory
- // length - num of bytes to be written
-
- char cmdp = param_getchar(Cmd, 0);
- if ( cmdp == 'H' || cmdp == 'h' ) return usage_legic_write();
-
- uint32_t offset = 0, len = 0, IV = 0;
-
- int res = sscanf(Cmd, "%x %x %x", &offset, &len, &IV);
- if(res < 2) {
- PrintAndLog("Please specify the offset and length as two hex strings and, optionally, the IV also as an hex string");
- return -1;
- }
+ uint8_t *data = NULL;
+ uint8_t cmdp = 0;
+ bool errors = false;
+ int len = 0, bg, en;
+ uint32_t offset = 0, IV = 0x55;
+ while(param_getchar(Cmd, cmdp) != 0x00) {
+ switch(param_getchar(Cmd, cmdp)) {
+ case 'd':
+ case 'D':
+ // peek at length of the input string so we can
+ // figure out how many elements to malloc in "data"
+ bg=en=0;
+ if (param_getptr(Cmd, &bg, &en, cmdp+1)) {
+ errors = true;
+ break;
+ }
+ len = (en - bg + 1);
+
+ // check that user entered even number of characters
+ // for hex data string
+ if (len & 1) {
+ 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");
+ errors = true;
+ break;
+ }
+
+ if (param_gethex(Cmd, cmdp+1, data, len)) {
+ errors = true;
+ break;
+ }
+
+ len >>= 1;
+ cmdp += 2;
+ break;
+ case 'o':
+ case 'O':
+ offset = param_get32ex(Cmd, cmdp+1, 4, 16);
+ cmdp += 2;
+ break;
+ case 'h':
+ case 'H':
+ errors = true;
+ break;
+ default:
+ PrintAndLog("Unknown parameter '%c'", param_getchar(Cmd, cmdp));
+ errors = true;
+ break;
+ }
+ if (errors) break;
+ }
+ //Validations
+ if (errors){
+ if (data)
+ free(data);
+ return usage_legic_write();
+ }
+
// tagtype
legic_card_select_t card;
if (legic_get_type(&card)) {
legic_print_type(card.cardsize, 0);
- // OUT-OF-BOUNDS check
- if ( len + offset > card.cardsize ) {
+ // 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);
- UsbCommand c = {CMD_WRITER_LEGIC_RF, {offset, len, IV}};
- clearCommandBuffer();
- SendCommand(&c);
+ PrintAndLog("Writing to tag");
+
+ UsbCommand c = {CMD_WRITER_LEGIC_RF, {offset, len, IV}};
+ memcpy(c.d.asBytes, data, len);
UsbCommand resp;
- if (WaitForResponseTimeout(CMD_ACK, &resp, 2000)) {
- uint8_t isOK = resp.arg[0] & 0xFF;
- if ( !isOK )
- PrintAndLog("failed writing tag");
- } else {
+ clearCommandBuffer();
+ SendCommand(&c);
+
+ if (!WaitForResponseTimeout(CMD_ACK, &resp, 2000)) {
PrintAndLog("command execution time out");
return 1;
}
-
- return 0;
-}
-
-int CmdLegicRfRawWrite(const char *Cmd) {
-
- char cmdp = param_getchar(Cmd, 0);
- if ( cmdp == 'H' || cmdp == 'h' ) return usage_legic_rawwrite();
-
- uint32_t offset = 0, data = 0, IV = 0;
- char answer;
-
- int res = sscanf(Cmd, "%x %x %x", &offset, &data, &IV);
- if(res < 2)
- return usage_legic_rawwrite();
-
- // OUT-OF-BOUNDS check
- if ( offset > MAX_LENGTH ) {
- PrintAndLog("Out-of-bound, offset");
+ uint8_t isOK = resp.arg[0] & 0xFF;
+ if ( !isOK ) {
+ PrintAndLog("failed writing tag");
return 1;
}
-
- if ( (IV & 0x7F) != IV ){
- IV &= 0x7F;
- PrintAndLog("Truncating IV to 7bits");
- }
- if ( (IV & 1) == 0 ){
- IV |= 0x01; // IV must be odd
- PrintAndLog("LSB of IV must be SET");
- }
- UsbCommand c = { CMD_RAW_WRITER_LEGIC_RF, {offset, data, IV} };
-
- if (c.arg[0] == 0x05 || c.arg[0] == 0x06) {
- 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')) {
- SendCommand(&c);
- return 0;
- }
- return -1;
- }
-
- clearCommandBuffer();
- SendCommand(&c);
- return 0;
+ return 0;
}
-void static calc4(uint8_t *cmd, uint8_t len){
- crc_t crc;
- //crc_init_ref(&crc, 4, 0x19 >> 1, 0x5, 0, TRUE, TRUE);
- crc_init(&crc, 4, 0x19 >> 1, 0x5, 0);
-
- crc_clear(&crc);
- crc_update(&crc, 1, 1); /* CMD_READ */
- crc_update(&crc, cmd[0], 8);
- crc_update(&crc, cmd[1], 8);
- printf("crc4 %X\n", reflect(crc_finish(&crc), 4) ) ;
-
- crc_clear(&crc);
- crc_update(&crc, 1, 1); /* CMD_READ */
- crc_update(&crc, cmd[0], 8);
- crc_update(&crc, cmd[1], 8);
- printf("crc4 %X\n", crc_finish(&crc) ) ;
-
- printf("---- old ---\n");
- crc_update2(&crc, 1, 1); /* CMD_READ */
- crc_update2(&crc, cmd[0], 8);
- crc_update2(&crc, cmd[1], 8);
- printf("crc4 %X \n", reflect(crc_finish(&crc), 4) ) ;
-
-
- crc_clear(&crc);
- crc_update2(&crc, 1, 1); /* CMD_READ */
- crc_update2(&crc, cmd[0], 8);
- crc_update2(&crc, cmd[1], 8);
- printf("crc4 %X\n", crc_finish(&crc) ) ;
-}
-
-int CmdLegicCalcCrc8(const char *Cmd){
+int CmdLegicCalcCrc(const char *Cmd){
uint8_t *data = NULL;
uint8_t cmdp = 0, uidcrc = 0, type=0;
//Validations
if (errors){
if (data) free(data);
- return usage_legic_calccrc8();
+ return usage_legic_calccrc();
}
switch (type){
case 16:
PrintAndLog("Legic crc16: %X", CRC16Legic(data, len, uidcrc));
break;
- case 4:
- calc4(data, 0);
- break;
default:
PrintAndLog("Legic crc8: %X", CRC8Legic(data, len) );
break;
PrintAndLog("LSB of IV must be SET %u", *iv);
}
}
-
void legic_seteml(uint8_t *src, uint32_t offset, uint32_t numofbytes) {
-
size_t len = 0;
UsbCommand c = {CMD_LEGIC_ESET, {0, 0, 0}};
-
for(size_t i = 0; 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, src, len);
+ memcpy(c.d.asBytes, src+i, len);
clearCommandBuffer();
SendCommand(&c);
- PrintAndLog("ICE: offset %d | len %d", i, len);
}
}
PrintAndLog("Fail, cannot allocate memory");
return 3;
}
+ memset(data, 0, readlen);
if ( readlen != dumplen )
PrintAndLog("Fail, only managed to read 0x%02X bytes of 0x%02X", readlen, dumplen);
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);
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];
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;
PrintAndLog("File reading error");
free(data);
fclose(f);
+ f = NULL;
return 2;
}
fclose(f);
+ f = NULL;
// transfer to device
legic_seteml(data, 0, numofbytes);
memset(data, 0, numofbytes);
// download emulator memory
- PrintAndLog("Reading emulator memory...");
-
+ PrintAndLog("Reading emulator memory...");
GetEMLFromBigBuf(data, numofbytes, 0);
if ( !WaitForResponseTimeout(CMD_ACK, NULL, 2500)) {
PrintAndLog("Fail, transfer from device time-out");
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;
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] <iv> -- read bytes from a LEGIC card"},
- {"save", CmdLegicSave, 0, "<filename> [<length>] -- Store samples"},
- {"load", CmdLegicLoad, 0, "<filename> -- Restore samples"},
- {"sim", CmdLegicRfSim, 0, "[phase drift [frame drift [req/resp drift]]] Start tag simulator (use after load or read)"},
- {"write", CmdLegicRfWrite, 0, "<offset> <length> <iv> -- Write sample buffer (user after load or read)"},
- {"crc8", CmdLegicCalcCrc8, 1, "Calculate Legic CRC8 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}
};
projects / proxmark3-svn / blobdiff