-#include <stdio.h>
-#include <string.h>
-#include "proxusb.h"
-#include "data.h"
-#include "ui.h"
-#include "cmdparser.h"
+//-----------------------------------------------------------------------------
+// Copyright (C) 2010 iZsh <izsh at fail0verflow.com>
+//
+// This code is licensed to you under the terms of the GNU GPL, version 2 or,
+// at your option, any later version. See the LICENSE.txt file for the text of
+// the license.
+//-----------------------------------------------------------------------------
+// High frequency Legic commands
+//-----------------------------------------------------------------------------
#include "cmdhflegic.h"
-#include "cmdmain.h"
static int CmdHelp(const char *Cmd);
-static command_t CommandTable[] =
-{
- {"help", CmdHelp, 1, "This help"},
- {"decode", CmdLegicDecode, 0, "Display deobfuscated and decoded LEGIC RF tag data (use after hf legic reader)"},
- {"reader", CmdLegicRFRead, 0, "[offset [length]] -- read bytes from a LEGIC card"},
- {NULL, NULL, 0, NULL}
-};
+#define MAX_LENGTH 1024
-int CmdHFLegic(const char *Cmd)
-{
- CmdsParse(CommandTable, Cmd);
- return 0;
+int usage_legic_calccrc(void){
+ PrintAndLog("Calculates the legic crc8/crc16 on the input hexbytes.");
+ PrintAndLog("There must be an even number of hexsymbols as input.");
+ PrintAndLog("Usage: hf legic crc [h] b <hexbytes> u <uidcrc> c <crc type>");
+ PrintAndLog("Options:");
+ PrintAndLog(" h : this help");
+ PrintAndLog(" b <hexbytes> : hex bytes");
+ PrintAndLog(" u <uidcrc> : MCC hexbyte");
+ PrintAndLog(" c <crc type> : 8|16 bit crc size");
+ PrintAndLog("");
+ PrintAndLog("Samples:");
+ PrintAndLog(" hf legic crc b deadbeef1122");
+ PrintAndLog(" hf legic crc b deadbeef1122 u 9A c 16");
+ return 0;
}
-
-int CmdHelp(const char *Cmd)
-{
- CmdsHelp(CommandTable);
- 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");
+ 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("");
+ 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");
+ 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("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("");
+ PrintAndLog("Samples:");
+ PrintAndLog(" hf legic write 10 4 - writes 0x4 to byte[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("");
+ PrintAndLog("Samples:");
+ PrintAndLog(" hf legic reader");
+ return 0;
+}
+int usage_legic_info(void){
+ PrintAndLog("Reads information from a legic prime tag.");
+ PrintAndLog("Shows systemarea, user areas etc");
+ PrintAndLog("Usage: hf legic info [h]");
+ PrintAndLog("Options:");
+ 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("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("");
+ PrintAndLog("Samples:");
+ PrintAndLog(" hf legic dump");
+ PrintAndLog(" hf legic dump o 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("");
+ PrintAndLog("Samples:");
+ PrintAndLog(" hf legic eload filename");
+ PrintAndLog(" hf legic eload 2 filename");
+ 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("");
+ PrintAndLog("Samples:");
+ PrintAndLog(" hf legic esave ");
+ PrintAndLog(" hf legic esave 2");
+ PrintAndLog(" hf legic esave 2 filename");
+ return 0;
}
/*
* Output BigBuf and deobfuscate LEGIC RF tag data.
- * This is based on information given in the talk held
+ * This is based on information given in the talk held
* by Henryk Ploetz and Karsten Nohl at 26c3
- * FIXME: will crash if sample buffer does not contain valid legic data
*/
-int CmdLegicDecode(const char *Cmd)
-{
- int h, i, j, k, n;
- int segment_len = 0;
- int segment_flag = 0;
- int stamp_len = 0;
- int crc = 0;
- int wrp = 0;
- int wrc = 0;
- int data_buf[1032]; // receiver buffer
- char out_string[3076]; // just use big buffer - bad practice
- char token_type[4];
- int delivered = 0;
-
- h = 0;
-
- // copy data from proxmark into buffer
- for (i = 0; i < 256; i += 12, h += 48) {
- UsbCommand c = {CMD_DOWNLOAD_RAW_ADC_SAMPLES_125K, {i, 0, 0}};
- SendCommand(&c);
- WaitForResponse(CMD_DOWNLOADED_RAW_ADC_SAMPLES_125K);
-
- for (j = 0; j < 48; j += 8) {
- for (k = 0; k < 8; k++) {
- data_buf[h+j+k] = sample_buf[j+k];
- }
- delivered += 8;
- if (delivered >= 1024)
- break;
- }
- }
-
- // Output CDF System area (9 bytes) plus remaining header area (12 bytes)
-
- PrintAndLog("\nCDF: System Area");
-
- PrintAndLog("MCD: %02x, MSN: %02x %02x %02x, MCC: %02x",
- data_buf[0],
- data_buf[1],
- data_buf[2],
- data_buf[3],
- data_buf[4]
- );
-
- crc = data_buf[4];
+int CmdLegicInfo(const char *Cmd) {
+
+ char cmdp = param_getchar(Cmd, 0);
+ if ( cmdp == 'H' || cmdp == 'h' ) return usage_legic_info();
+
+ int i = 0, k = 0, segmentNum = 0, segment_len = 0, segment_flag = 0;
+ int crc = 0, wrp = 0, wrc = 0;
+ uint8_t stamp_len = 0;
+ uint8_t data[1024]; // receiver buffer
+ char token_type[5] = {0,0,0,0,0};
+ int dcf = 0;
+ int bIsSegmented = 0;
+
+ CmdLegicRdmem("0 22 55");
+
+ // copy data from device
+ GetEMLFromBigBuf(data, sizeof(data), 0);
+ if ( !WaitForResponseTimeout(CMD_ACK, NULL, 2000)){
+ PrintAndLog("Command execute timeout");
+ return 1;
+ }
+
+ // Output CDF System area (9 bytes) plus remaining header area (12 bytes)
+ crc = data[4];
+ uint32_t calc_crc = CRC8Legic(data, 4);
+
+ PrintAndLog("\nCDF: System Area");
+ PrintAndLog("------------------------------------------------------");
+ PrintAndLog("MCD: %02x, MSN: %02x %02x %02x, MCC: %02x %s",
+ data[0],
+ data[1],
+ data[2],
+ data[3],
+ data[4],
+ (calc_crc == crc) ? "OK":"Fail"
+ );
- switch (data_buf[5]&0x7f) {
- case 0x00 ... 0x2f:
- strncpy(token_type, "IAM",sizeof(token_type));
- break;
- case 0x30 ... 0x6f:
- strcpy(token_type, "SAM");
- break;
- case 0x70 ... 0x7f:
- strcpy(token_type, "GAM");
- break;
- default:
- strcpy(token_type, "???");
- break;
- }
-
- stamp_len = 0xfc - data_buf[6];
-
- PrintAndLog("DCF: %02x %02x, Token_Type=%s (OLE=%01u), Stamp_len=%02u",
- data_buf[5],
- data_buf[6],
- token_type,
- (data_buf[5]&0x80)>>7,
- stamp_len
- );
-
- PrintAndLog("WRP=%02u, WRC=%01u, RD=%01u, raw=%02x, SSC=%02x",
- data_buf[7]&0x0f,
- (data_buf[7]&0x70)>>4,
- (data_buf[7]&0x80)>>7,
- data_buf[7],
- data_buf[8]
- );
-
- PrintAndLog("Remaining Header Area");
-
- PrintAndLog("%02x %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x",
- data_buf[9],
- data_buf[10],
- data_buf[11],
- data_buf[12],
- data_buf[13],
- data_buf[14],
- data_buf[15],
- data_buf[16],
- data_buf[17],
- data_buf[18],
- data_buf[19],
- data_buf[20],
- data_buf[21]
- );
-
- PrintAndLog("\nADF: User Area");
-
- i = 22;
- for (n=0; n<64; n++) {
- segment_len = ((data_buf[i+1]^crc)&0x0f) * 256 + (data_buf[i]^crc);
- segment_flag = ((data_buf[i+1]^crc)&0xf0)>>4;
-
- wrp = (data_buf[i+2]^crc);
- wrc = ((data_buf[i+3]^crc)&0x70)>>4;
-
- PrintAndLog("Segment %02u: raw header=%02x %02x %02x %02x, flag=%01x (valid=%01u, last=%01u), len=%04u, WRP=%02u, WRC=%02u, RD=%01u, CRC=%02x",
- n,
- data_buf[i]^crc,
- data_buf[i+1]^crc,
- data_buf[i+2]^crc,
- data_buf[i+3]^crc,
- segment_flag,
- (segment_flag&0x4)>>2,
- (segment_flag&0x8)>>3,
- segment_len,
- wrp,
- wrc,
- ((data_buf[i+3]^crc)&0x80)>>7,
- (data_buf[i+4]^crc)
- );
+ // MCD = Manufacturer ID (should be list meaning something?)
+
+ token_type[0] = 0;
+ dcf = ((int)data[6] << 8) | (int)data[5];
+
+ // New unwritten media?
+ if(dcf == 0xFFFF) {
+
+ PrintAndLog("DCF: %d (%02x %02x), Token Type=NM (New Media)",
+ dcf,
+ data[5],
+ data[6]
+ );
+
+ } else if(dcf > 60000) { // Master token?
+
+ int fl = 0;
+
+ if(data[6] == 0xec) {
+ strncpy(token_type, "XAM", sizeof(token_type));
+ fl = 1;
+ stamp_len = 0x0c - (data[5] >> 4);
+ } else {
+ switch (data[5] & 0x7f) {
+ case 0x00 ... 0x2f:
+ strncpy(token_type, "IAM", sizeof(token_type));
+ fl = (0x2f - (data[5] & 0x7f)) + 1;
+ break;
+ case 0x30 ... 0x6f:
+ strncpy(token_type, "SAM", sizeof(token_type));
+ fl = (0x6f - (data[5] & 0x7f)) + 1;
+ break;
+ case 0x70 ... 0x7f:
+ strncpy(token_type, "GAM", sizeof(token_type));
+ fl = (0x7f - (data[5] & 0x7f)) + 1;
+ break;
+ }
+
+ stamp_len = 0xfc - data[6];
+ }
+
+ PrintAndLog("DCF: %d (%02x %02x), Token Type=%s (OLE=%01u), OL=%02u, FL=%02u",
+ dcf,
+ data[5],
+ data[6],
+ token_type,
+ (data[5] & 0x80 )>> 7,
+ stamp_len,
+ fl
+ );
+
+ } else { // Is IM(-S) type of card...
+
+ if(data[7] == 0x9F && data[8] == 0xFF) {
+ bIsSegmented = 1;
+ strncpy(token_type, "IM-S", sizeof(token_type));
+ } else {
+ strncpy(token_type, "IM", sizeof(token_type));
+ }
+
+ PrintAndLog("DCF: %d (%02x %02x), Token Type=%s (OLE=%01u)",
+ dcf,
+ data[5],
+ data[6],
+ token_type,
+ (data[5]&0x80) >> 7
+ );
+ }
+
+ // Makes no sence to show this on blank media...
+ if(dcf != 0xFFFF) {
+
+ if(bIsSegmented) {
+ PrintAndLog("WRP=%02u, WRC=%01u, RD=%01u, SSC=%02x",
+ data[7] & 0x0f,
+ (data[7] & 0x70) >> 4,
+ (data[7] & 0x80) >> 7,
+ data[8]
+ );
+ }
+
+ // Header area is only available on IM-S cards, on master tokens this data is the master token data itself
+ if(bIsSegmented || dcf > 60000) {
+ if(dcf > 60000) {
+ PrintAndLog("Master token data");
+ PrintAndLog("%s", sprint_hex(data+8, 14));
+ } else {
+ PrintAndLog("Remaining Header Area");
+ PrintAndLog("%s", sprint_hex(data+9, 13));
+ }
+ }
+ }
+
+ uint8_t segCrcBytes[8] = {0,0,0,0,0,0,0,0};
+ uint32_t segCalcCRC = 0;
+ uint32_t segCRC = 0;
+
+ // Data card?
+ if(dcf <= 60000) {
+
+ PrintAndLog("\nADF: User Area");
+ PrintAndLog("------------------------------------------------------");
+
+ if(bIsSegmented) {
+
+ // Data start point on segmented cards
+ i = 22;
+
+ // decode segments
+ for (segmentNum=1; segmentNum < 128; segmentNum++ )
+ {
+ segment_len = ((data[i+1] ^ crc) & 0x0f) * 256 + (data[i] ^ crc);
+ segment_flag = ((data[i+1] ^ crc) & 0xf0) >> 4;
+ wrp = (data[i+2] ^ crc);
+ wrc = ((data[i+3] ^ crc) & 0x70) >> 4;
+
+ bool hasWRC = (wrc > 0);
+ bool hasWRP = (wrp > wrc);
+ int wrp_len = (wrp - wrc);
+ int remain_seg_payload_len = (segment_len - wrp - 5);
+
+ // validate segment-crc
+ segCrcBytes[0]=data[0]; //uid0
+ segCrcBytes[1]=data[1]; //uid1
+ segCrcBytes[2]=data[2]; //uid2
+ segCrcBytes[3]=data[3]; //uid3
+ segCrcBytes[4]=(data[i] ^ crc); //hdr0
+ segCrcBytes[5]=(data[i+1] ^ crc); //hdr1
+ segCrcBytes[6]=(data[i+2] ^ crc); //hdr2
+ segCrcBytes[7]=(data[i+3] ^ crc); //hdr3
+
+ segCalcCRC = CRC8Legic(segCrcBytes, 8);
+ segCRC = data[i+4] ^ crc;
+
+ PrintAndLog("Segment %02u \nraw header | 0x%02X 0x%02X 0x%02X 0x%02X \nSegment len: %u, Flag: 0x%X (valid:%01u, last:%01u), WRP: %02u, WRC: %02u, RD: %01u, CRC: 0x%02X (%s)",
+ segmentNum,
+ data[i] ^ crc,
+ data[i+1] ^ crc,
+ data[i+2] ^ crc,
+ data[i+3] ^ crc,
+ segment_len,
+ segment_flag,
+ (segment_flag & 0x4) >> 2,
+ (segment_flag & 0x8) >> 3,
+ wrp,
+ wrc,
+ ((data[i+3]^crc) & 0x80) >> 7,
+ segCRC,
+ ( segCRC == segCalcCRC ) ? "OK" : "fail"
+ );
+
+ i += 5;
- i+=5;
+ if ( hasWRC ) {
+ PrintAndLog("WRC protected area: (I %d | K %d| WRC %d)", i, k, wrc);
+ PrintAndLog("\nrow | data");
+ PrintAndLog("-----+------------------------------------------------");
+
+ for ( k=i; k < (i + wrc); ++k)
+ data[k] ^= crc;
+
+ print_hex_break( data+i, wrc, 16);
+
+ i += wrc;
+ }
- if (wrc>0) {
- PrintAndLog("WRC protected area:");
- for (k=0, j=0; k < wrc; k++, i++, j += 3) {
- sprintf(&out_string[j], "%02x", (data_buf[i]^crc));
- out_string[j+2] = ' ';
- };
-
- out_string[j] = '\0';
+ if ( hasWRP ) {
+ PrintAndLog("Remaining write protected area: (I %d | K %d | WRC %d | WRP %d WRP_LEN %d)",i, k, wrc, wrp, wrp_len);
+ PrintAndLog("\nrow | data");
+ PrintAndLog("-----+------------------------------------------------");
+
+ for (k=i; k < (i+wrp_len); ++k)
+ data[k] ^= crc;
+
+ print_hex_break( data+i, wrp_len, 16);
+
+ i += wrp_len;
+
+ // does this one work? (Answer: Only if KGH/BGH is used with BCD encoded card number! So maybe this will show just garbage...)
+ if( wrp_len == 8 )
+ PrintAndLog("Card ID: %2X%02X%02X", data[i-4]^crc, data[i-3]^crc, data[i-2]^crc);
+ }
- PrintAndLog("%s", out_string);
- }
+ PrintAndLog("Remaining segment payload: (I %d | K %d | Remain LEN %d)", i, k, remain_seg_payload_len);
+ PrintAndLog("\nrow | data");
+ PrintAndLog("-----+------------------------------------------------");
+
+ for ( k=i; k < (i+remain_seg_payload_len); ++k)
+ data[k] ^= crc;
+
+ print_hex_break( data+i, remain_seg_payload_len, 16);
- if (wrp>wrc) {
- PrintAndLog("Remaining write protected area:");
-
- for (k=0, j=0; k < (wrp-wrc); k++, i++, j += 3) {
- sprintf(&out_string[j], "%02x", (data_buf[i]^crc));
- out_string[j+2] = ' ';
- };
+ i += remain_seg_payload_len;
+
+ PrintAndLog("-----+------------------------------------------------\n");
+
+ // end with last segment
+ if (segment_flag & 0x8) return 0;
+
+ } // end for loop
+
+ } else {
+
+ // Data start point on unsegmented cards
+ i = 8;
+
+ wrp = data[7] & 0x0F;
+ wrc = (data[7] & 0x70) >> 4;
+
+ bool hasWRC = (wrc > 0);
+ bool hasWRP = (wrp > wrc);
+ int wrp_len = (wrp - wrc);
+ int remain_seg_payload_len = (1024 - 22 - wrp); // Any chance to get physical card size here!?
+
+ PrintAndLog("Unsegmented card - WRP: %02u, WRC: %02u, RD: %01u",
+ wrp,
+ wrc,
+ (data[7] & 0x80) >> 7
+ );
+
+ if ( hasWRC ) {
+ PrintAndLog("WRC protected area: (I %d | WRC %d)", i, wrc);
+ PrintAndLog("\nrow | data");
+ PrintAndLog("-----+------------------------------------------------");
+ print_hex_break( data+i, wrc, 16);
+ i += wrc;
+ }
- out_string[j] = '\0';
+ if ( hasWRP ) {
+ PrintAndLog("Remaining write protected area: (I %d | WRC %d | WRP %d | WRP_LEN %d)", i, wrc, wrp, wrp_len);
+ PrintAndLog("\nrow | data");
+ PrintAndLog("-----+------------------------------------------------");
+ print_hex_break( data + i, wrp_len, 16);
+ i += wrp_len;
+
+ // does this one work? (Answer: Only if KGH/BGH is used with BCD encoded card number! So maybe this will show just garbage...)
+ if( wrp_len == 8 )
+ PrintAndLog("Card ID: %2X%02X%02X", data[i-4], data[i-3], data[i-2]);
+ }
- PrintAndLog("%s", out_string);
- if((wrp-wrc) == 8) {
- sprintf(out_string,"Card ID: %2X%02X%02X",data_buf[i-4]^crc,data_buf[i-3]^crc,data_buf[i-2]^crc);
- PrintAndLog("%s", out_string);
- }
+ PrintAndLog("Remaining segment payload: (I %d | Remain LEN %d)", i, remain_seg_payload_len);
+ PrintAndLog("\nrow | data");
+ PrintAndLog("-----+------------------------------------------------");
+ print_hex_break( data + i, remain_seg_payload_len, 16);
+ i += remain_seg_payload_len;
+
+ PrintAndLog("-----+------------------------------------------------\n");
+ }
+ }
+ return 0;
+}
+
+// params:
+// offset in data memory
+// number of bytes to read
+int CmdLegicRdmem(const char *Cmd) {
+
+ 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);
+
+ // 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);
+ }
+
+ legic_chk_iv(&IV);
+
+ UsbCommand c = {CMD_READER_LEGIC_RF, {offset, len, IV}};
+ clearCommandBuffer();
+ SendCommand(&c);
+ UsbCommand resp;
+ if ( !WaitForResponseTimeout(CMD_ACK, &resp, 3000) ) {
+ PrintAndLog("command execution time out");
+ return 1;
+ }
+
+ uint8_t isOK = resp.arg[0] & 0xFF;
+ uint16_t readlen = resp.arg[1];
+ if ( !isOK ) {
+ PrintAndLog("failed reading tag");
+ return 2;
+ }
+
+ 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");
+ free(data);
+ return 1;
+ }
+
+ PrintAndLog("\n ## | Data");
+ 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;
}
-
- PrintAndLog("Remaining segment payload:");
- for (k=0, j=0; k < (segment_len - wrp - 5); k++, i++, j += 3) {
- sprintf(&out_string[j], "%02x", (data_buf[i]^crc));
- out_string[j+2] = ' ';
- };
-
- out_string[j] = '\0';
-
- PrintAndLog("%s", out_string);
-
- // end with last segment
- if (segment_flag & 0x8)
- return 0;
- };
- return 0;
-}
-
-int CmdLegicRFRead(const char *Cmd)
-{
- int byte_count=0,offset=0;
- sscanf(Cmd, "%i %i", &offset, &byte_count);
- if(byte_count == 0) byte_count = 256;
- if(byte_count + offset > 256) byte_count = 256 - offset;
- UsbCommand c={CMD_READER_LEGIC_RF, {offset, byte_count, 0}};
- SendCommand(&c);
- return 0;
+
+ 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 ){
+// 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");
+ 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 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]);
+ 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;
+ }
+
+ // 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 > card.cardsize ) {
+ PrintAndLog("Out-of-bounds, Cardsize = %d, [offset+len = %d ]", card.cardsize, len + offset);
+ return -2;
+ }
+
+ legic_chk_iv(&IV);
+
+ UsbCommand c = {CMD_WRITER_LEGIC_RF, {offset, len, IV}};
+ clearCommandBuffer();
+ SendCommand(&c);
+ UsbCommand resp;
+ if (WaitForResponseTimeout(CMD_ACK, &resp, 2000)) {
+ uint8_t isOK = resp.arg[0] & 0xFF;
+ if ( !isOK )
+ PrintAndLog("failed writing tag");
+ } else {
+ PrintAndLog("command execution time out");
+ 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;
+}
+*/
+
+int CmdLegicCalcCrc(const char *Cmd){
+
+ uint8_t *data = NULL;
+ uint8_t cmdp = 0, uidcrc = 0, type=0;
+ bool errors = false;
+ int len = 0;
+ int bg, en;
+
+ while(param_getchar(Cmd, cmdp) != 0x00) {
+ switch(param_getchar(Cmd, cmdp)) {
+ case 'b':
+ case 'B':
+ // 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;
+ }
+
+ // 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 'u':
+ case 'U':
+ uidcrc = param_get8ex(Cmd, cmdp+1, 0, 16);
+ cmdp += 2;
+ break;
+ case 'c':
+ case 'C':
+ type = param_get8ex(Cmd, cmdp+1, 0, 10);
+ 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_calccrc();
+ }
+
+ switch (type){
+ case 16:
+ PrintAndLog("Legic crc16: %X", CRC16Legic(data, len, uidcrc));
+ break;
+ default:
+ PrintAndLog("Legic crc8: %X", CRC8Legic(data, len) );
+ break;
+ }
+
+ if (data) free(data);
+ return 0;
+}
+
+int legic_print_type(uint32_t tagtype, uint8_t spaces){
+ char spc[11] = " ";
+ spc[10]=0x00;
+ char *spacer = spc + (10-spaces);
+
+ if ( tagtype == 22 )
+ PrintAndLog("%sTYPE : MIM%d card (outdated)", spacer, tagtype);
+ else if ( tagtype == 256 )
+ PrintAndLog("%sTYPE : MIM%d card (234 bytes)", spacer, tagtype);
+ else if ( tagtype == 1024 )
+ PrintAndLog("%sTYPE : MIM%d card (1002 bytes)", spacer, tagtype);
+ else
+ PrintAndLog("%sTYPE : Unknown %06x", spacer, tagtype);
+ return 0;
+}
+int legic_get_type(legic_card_select_t *card){
+
+ if ( card == NULL ) return 1;
+
+ UsbCommand c = {CMD_LEGIC_INFO, {0,0,0}};
+ clearCommandBuffer();
+ SendCommand(&c);
+ UsbCommand resp;
+ if (!WaitForResponseTimeout(CMD_ACK, &resp, 500))
+ return 2;
+
+ uint8_t isOK = resp.arg[0] & 0xFF;
+ if ( !isOK )
+ return 3;
+
+ memcpy(card, (legic_card_select_t *)resp.d.asBytes, sizeof(legic_card_select_t));
+ return 0;
+}
+void legic_chk_iv(uint32_t *iv){
+ if ( (*iv & 0x7F) != *iv ){
+ *iv &= 0x7F;
+ PrintAndLog("Truncating IV to 7bits, %u", *iv);
+ }
+ // IV must be odd
+ if ( (*iv & 1) == 0 ){
+ *iv |= 0x01;
+ 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+i, len);
+ clearCommandBuffer();
+ SendCommand(&c);
+ PrintAndLog("ICE: offset %d | len %d", i, len);
+ }
+}
+
+int HFLegicReader(const char *Cmd, bool verbose) {
+
+ char cmdp = param_getchar(Cmd, 0);
+ if ( cmdp == 'H' || cmdp == 'h' ) return usage_legic_reader();
+
+ legic_card_select_t card;
+ switch(legic_get_type(&card)){
+ case 1:
+ if ( verbose ) PrintAndLog("command execution time out");
+ return 1;
+ case 2:
+ case 3:
+ if ( verbose ) PrintAndLog("legic card select failed");
+ return 2;
+ default: break;
+ }
+ PrintAndLog(" UID : %s", sprint_hex(card.uid, sizeof(card.uid)));
+ legic_print_type(card.cardsize, 0);
+ return 0;
+}
+int CmdLegicReader(const char *Cmd){
+ return HFLegicReader(Cmd, TRUE);
+}
+
+int CmdLegicDump(const char *Cmd){
+
+ FILE *f;
+ char filename[FILE_PATH_SIZE] = {0x00};
+ char *fnameptr = filename;
+ size_t fileNlen = 0;
+ bool errors = false;
+ uint16_t dumplen;
+ uint8_t cmdp = 0;
+
+ memset(filename, 0, sizeof(filename));
+
+ while(param_getchar(Cmd, cmdp) != 0x00) {
+ switch(param_getchar(Cmd, cmdp)) {
+ case 'h':
+ case 'H':
+ return usage_legic_dump();
+ case 'o':
+ case 'O':
+ fileNlen = param_getstr(Cmd, cmdp+1, filename);
+ if (!fileNlen)
+ errors = true;
+ 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_dump();
+
+ // tagtype
+ legic_card_select_t card;
+ if (legic_get_type(&card)) {
+ PrintAndLog("Failed to identify tagtype");
+ return -1;
+ }
+ dumplen = card.cardsize;
+
+ legic_print_type(dumplen, 0);
+ PrintAndLog("Reading tag memory...");
+
+ UsbCommand c = {CMD_READER_LEGIC_RF, {0x00, dumplen, 0x55}};
+ clearCommandBuffer();
+ SendCommand(&c);
+ UsbCommand resp;
+ if (!WaitForResponseTimeout(CMD_ACK, &resp, 3000)) {
+ PrintAndLog("Command execute time-out");
+ return 1;
+ }
+
+ uint8_t isOK = resp.arg[0] & 0xFF;
+ if ( !isOK ) {
+ PrintAndLog("Failed dumping tag data");
+ return 2;
+ }
+
+ uint16_t readlen = resp.arg[1];
+ uint8_t *data = malloc(readlen);
+ if (!data) {
+ 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);
+
+ // copy data from device
+ GetEMLFromBigBuf(data, readlen, 0);
+ if ( !WaitForResponseTimeout(CMD_ACK, NULL, 2500)) {
+ PrintAndLog("Fail, transfer from device time-out");
+ free(data);
+ return 4;
+ }
+
+ // user supplied filename?
+ if (fileNlen < 1)
+ sprintf(fnameptr,"%02X%02X%02X%02X.bin", data[0], data[1], data[2], data[3]);
+ else
+ sprintf(fnameptr + fileNlen,".bin");
+
+ if ((f = fopen(filename,"wb")) == NULL) {
+ PrintAndLog("Could not create file name %s", filename);
+ if (data)
+ free(data);
+ return 5;
+ }
+ fwrite(data, 1, readlen, f);
+ fclose(f);
+ free(data);
+ PrintAndLog("Wrote %d bytes to %s", readlen, filename);
+ return 0;
+}
+
+int CmdLegicELoad(const char *Cmd) {
+ FILE * f;
+ char filename[FILE_PATH_SIZE];
+ char *fnameptr = filename;
+ int len, numofbytes;
+ int nameParamNo = 1;
+
+ char cmdp = param_getchar(Cmd, 0);
+ if ( cmdp == 'h' || cmdp == 'H' || cmdp == 0x00)
+ return usage_legic_eload();
+
+ switch (cmdp) {
+ case '0' : numofbytes = 22; break;
+ case '1' :
+ case '\0': numofbytes = 256; break;
+ case '2' : numofbytes = 1024; break;
+ default : numofbytes = 256; nameParamNo = 0;break;
+ }
+
+ // set up buffer
+ uint8_t *data = malloc(numofbytes);
+ if (!data) {
+ PrintAndLog("Fail, cannot allocate memory");
+ return 3;
+ }
+ memset(data, 0, numofbytes);
+
+ // set up file
+ len = param_getstr(Cmd, nameParamNo, filename);
+ if (len > FILE_PATH_SIZE - 5)
+ len = FILE_PATH_SIZE - 5;
+ fnameptr += len;
+ sprintf(fnameptr, ".bin");
+
+ // open file
+ if ((f = fopen(filename,"rb")) == NULL) {
+ PrintAndLog("File %s not found or locked", filename);
+ free(data);
+ return 1;
+ }
+
+ // load file
+ size_t bytes_read = fread(data, 1, numofbytes, f);
+ if ( bytes_read == 0){
+ PrintAndLog("File reading error");
+ free(data);
+ fclose(f);
+ return 2;
+ }
+ fclose(f);
+
+ // transfer to device
+ legic_seteml(data, 0, numofbytes);
+
+ free(data);
+ PrintAndLog("\nLoaded %d bytes from file: %s to emulator memory", numofbytes, filename);
+ return 0;
+}
+
+int CmdLegicESave(const char *Cmd) {
+ FILE *f;
+ char filename[FILE_PATH_SIZE];
+ char *fnameptr = filename;
+ int fileNlen, numofbytes, nameParamNo = 1;
+
+ memset(filename, 0, sizeof(filename));
+
+ char cmdp = param_getchar(Cmd, 0);
+
+ if ( cmdp == 'h' || cmdp == 'H' || cmdp == 0x00)
+ return usage_legic_esave();
+
+ switch (cmdp) {
+ case '0' : numofbytes = 22; break;
+ case '1' :
+ case '\0': numofbytes = 256; break;
+ case '2' : numofbytes = 1024; break;
+ default : numofbytes = 256; nameParamNo = 0; break;
+ }
+
+ fileNlen = param_getstr(Cmd, nameParamNo, filename);
+
+ if (fileNlen > FILE_PATH_SIZE - 5)
+ fileNlen = FILE_PATH_SIZE - 5;
+
+ // set up buffer
+ uint8_t *data = malloc(numofbytes);
+ if (!data) {
+ PrintAndLog("Fail, cannot allocate memory");
+ return 3;
+ }
+ memset(data, 0, numofbytes);
+
+ // download emulator memory
+ PrintAndLog("Reading emulator memory...");
+ GetEMLFromBigBuf(data, numofbytes, 0);
+ if ( !WaitForResponseTimeout(CMD_ACK, NULL, 2500)) {
+ PrintAndLog("Fail, transfer from device time-out");
+ free(data);
+ return 4;
+ }
+
+ // user supplied filename?
+ if (fileNlen < 1)
+ sprintf(fnameptr,"%02X%02X%02X%02X.bin", data[0], data[1], data[2], data[3]);
+ else
+ sprintf(fnameptr + fileNlen,".bin");
+
+ // open file
+ if ((f = fopen(filename,"wb")) == NULL) {
+ PrintAndLog("Could not create file name %s", filename);
+ free(data);
+ return 1;
+ }
+ fwrite(data, 1, numofbytes, f);
+ fclose(f);
+ free(data);
+ PrintAndLog("\nSaved %d bytes from emulator memory to file: %s", numofbytes, filename);
+ return 0;
+}
+
+static command_t CommandTable[] = {
+ {"help", CmdHelp, 1, "This help"},
+ {"reader", CmdLegicReader, 1, "LEGIC Prime Reader UID and Type 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)"},
+ {"crc", CmdLegicCalcCrc, 1, "Calculate Legic CRC over given hexbytes"},
+ {"eload", CmdLegicELoad, 1, "Load binary dump to emulator memory"},
+ {"esave", CmdLegicESave, 1, "Save emulator memory to binary file"},
+ {NULL, NULL, 0, NULL}
+};
+
+int CmdHFLegic(const char *Cmd) {
+ clearCommandBuffer();
+ CmdsParse(CommandTable, Cmd);
+ return 0;
+}
+
+int CmdHelp(const char *Cmd) {
+ CmdsHelp(CommandTable);
+ return 0;
+}
\ No newline at end of file
projects / proxmark3-svn / blobdiff