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CHG: starting to add the legic changes.. *work in progress*

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iceman1001 2016-08-26 17:19:27 +02:00
parent 89603cbddc
commit ffa306de61
2 changed files with 100 additions and 28 deletions
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127
client/cmdhflegic.c
View file

@ -11,11 +11,15 @@
static int CmdHelp(const char *Cmd);
#define SESSION_IV 0x55
#define MAX_LENGTH 1024
int usage_legic_calccrc8(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 crc8 [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");
@ -25,35 +29,65 @@ int usage_legic_calccrc8(void){
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 <file name>");
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_read(void){
PrintAndLog("Read data from a legic tag.");
PrintAndLog("Usage: hf legic read <offset> <num of bytes>");
PrintAndLog("Usage: hf legic read [h] <offset> <length> <IV>");
PrintAndLog("Options:");
PrintAndLog(" <offset> : offset in data array to start download from");
PrintAndLog(" <num of bytes> : number of bytes to download");
PrintAndLog(" h : this help");
PrintAndLog(" <offset> : offset in data array to start download from");
PrintAndLog(" <length> : number of bytes to download");
PrintAndLog(" <IV> : (optional) Initialization vector to use");
PrintAndLog("");
PrintAndLog("Samples:");
PrintAndLog(" hf legic read");
PrintAndLog(" hf legic read 10 4");
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");
PrintAndLog(" <length> : number of bytes to write");
PrintAndLog(" <IV> : (optional) Initialization vector to use");
PrintAndLog("");
PrintAndLog("Samples:");
PrintAndLog(" hf legic write");
PrintAndLog(" hf legic write 10 4");
return 0;
}
int usage_legic_rawwrite(void){
PrintAndLog("Write raw data direct to a specific address on legic tag.");
PrintAndLog("Usage: hf legic writeraw [h] <address> <value> <IV>");
PrintAndLog("Options:");
PrintAndLog(" h : this help");
PrintAndLog(" <address> : address to write to");
PrintAndLog(" <value> : value to write");
PrintAndLog(" <IV> : (optional) Initialization vector to use");
PrintAndLog("");
PrintAndLog("Samples:");
PrintAndLog(" hf legic writeraw");
PrintAndLog(" hf legic writeraw 10 4");
return 0;
}
int usage_legic_fill(void){
PrintAndLog("Missing help text.");
return 0;
}
@ -346,25 +380,28 @@ int CmdLegicDecode(const char *Cmd) {
}
int CmdLegicRFRead(const char *Cmd) {
// params:
// offset in data
// number of bytes.
char cmdp = param_getchar(Cmd, 0);
if ( cmdp == 'H' || cmdp == 'h' ) return usage_legic_read();
int byte_count = 0, offset = 0;
sscanf(Cmd, "%i %i", &offset, &byte_count);
if(byte_count == 0) byte_count = -1;
if(byte_count + offset > 1024) byte_count = 1024 - offset;
uint32_t offset = 0, len = 0, IV = 0;
sscanf(Cmd, "%x %x %x", &offset, &len, &IV);
UsbCommand c= {CMD_READER_LEGIC_RF, {offset, byte_count, 0}};
// OUT-OF-BOUNDS check
if(len + offset > MAX_LENGTH) len = MAX_LENGTH - offset;
IV &= 0x7F;
PrintAndLog("Current IV: 0x%02x", IV);
UsbCommand c= {CMD_READER_LEGIC_RF, {offset, len, IV}};
clearCommandBuffer();
SendCommand(&c);
return 0;
}
int CmdLegicLoad(const char *Cmd) {
// iceman: potential bug, where all filepaths or filename which starts with H or h will print the helptext :)
@ -505,28 +542,64 @@ int CmdLegicRfSim(const char *Cmd) {
return 0;
}
//TODO: write a help text (iceman)
int CmdLegicRfWrite(const char *Cmd) {
// params:
// offset - in tag memory
// length - num of bytes to be written
// IV - initialisation vector
char cmdp = param_getchar(Cmd, 0);
if ( cmdp == 'H' || cmdp == 'h' ) return usage_legic_write();
uint32_t offset = 0, len = 0, IV = SESSION_IV;
UsbCommand c = {CMD_WRITER_LEGIC_RF, {0,0,0}};
int res = sscanf(Cmd, " 0x%"llx" 0x%"llx, &c.arg[0], &c.arg[1]);
if(res != 2) {
PrintAndLog("Please specify the offset and length as two hex strings");
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;
}
// OUT-OF-BOUNDS check
if(len + offset > MAX_LENGTH) len = MAX_LENGTH - offset;
IV &= 0x7F;
PrintAndLog("Current IV: 0x%02x", IV);
c.arg[0] = offset;
c.arg[1] = len;
c.arg[2] = IV;
clearCommandBuffer();
SendCommand(&c);
return 0;
}
//TODO: write a help text (iceman)
int CmdLegicRfRawWrite(const char *Cmd) {
char cmdp = param_getchar(Cmd, 0);
if ( cmdp == 'H' || cmdp == 'h' ) return usage_legic_rawwrite();
uint32_t address = 0, data = 0, IV = SESSION_IV;
char answer;
UsbCommand c = { CMD_RAW_WRITER_LEGIC_RF, {0,0,0} };
int res = sscanf(Cmd, " 0x%"llx" 0x%"llx, &c.arg[0], &c.arg[1]);
if(res != 2) {
PrintAndLog("Please specify the offset and value as two hex strings");
return -1;
}
int res = sscanf(Cmd, "%x %x %x", &address, &data, &IV);
if(res < 2)
return usage_legic_rawwrite();
// OUT-OF-BOUNDS check
if(address > MAX_LENGTH)
return usage_legic_rawwrite();
IV &= 0x7F;
PrintAndLog("Current IV: 0x%02x", IV);
c.arg[0] = address;
c.arg[1] = data;
c.arg[2] = IV;
if (c.arg[0] == 0x05 || c.arg[0] == 0x06) {
PrintAndLog("############# DANGER !! #############");
@ -659,12 +732,12 @@ int CmdLegicCalcCrc8(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)"},
{"read", CmdLegicRFRead, 0, "[offset][length] -- read bytes from a LEGIC card"},
{"read", CmdLegicRFRead, 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> -- Write sample buffer (user after load or read)"},
{"writeRaw",CmdLegicRfRawWrite, 0, "<address> <value> -- Write direct to address"},
{"write", CmdLegicRfWrite,0, "<offset> <length> <iv> -- Write sample buffer (user after load or read)"},
{"writeraw",CmdLegicRfRawWrite, 0, "<address> <value> <iv> -- Write direct to address"},
{"fill", CmdLegicRfFill, 0, "<offset> <length> <value> -- Fill/Write tag with constant value"},
{"crc8", CmdLegicCalcCrc8, 1, "Calculate Legic CRC8 over given hexbytes"},
{NULL, NULL, 0, NULL}

1
client/cmdhw.c
View file

@ -443,7 +443,6 @@ int CmdStatus(const char *Cmd)
return 0;
}
int CmdPing(const char *Cmd)
{
clearCommandBuffer();