proxmark3/client/cmdhflegic.c

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//-----------------------------------------------------------------------------
// 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 <stdio.h>
#include <string.h>
Client cleanup and restructuring. Stage 1... Next Step is refactoring some of the giant functions which are just copy/paste of some other ones with just a few line changes, removing unnecessary 'goto' etc. The MS Windows version is broken with this commit but will be fixed soon. Everything can't be done all at once :P The commands are now hierarchical, for example: "hf 14a read" vs. "hf 14b read". You can also request help: "hf help", "data help", "hf 15 help" etc. Indents are now space-based, not tab-based anymore. Hopefully no one will be trolling about it, considering the suicide-prone work being done here ;) client/cmdhw.c, client/proxusb.c, client/cmdhw.h, client/proxusb.h, client/cmdmain.c, client/cmdlfhid.c, client/cmdmain.h, client/cmdlfhid.h, client/data.c, client/data.h, client/cmdhf.c, client/cmdlf.c, client/cmdhf.h, client/cmdhf15.c, client/cmdhf14b.c, client/cmdlf.h, client/cmdhf15.h, client/cmdhf14b.h, client/cmddata.c, client/cmddata.h, client/ui.c, client/cmdparser.c, client/cmdlfti.c, client/ui.h, client/cmdlfem4x.c, client/cmdparser.h, client/cmdlfti.h, client/cmdlfem4x.h, client/graph.c, client/graph.h, client/cmdhf14a.c, client/cmdhf14a.h, client/cmdhflegic.c, client/cmdhflegic.c: New files. client/cli.c, client/flasher.c, client/snooper.c, client/proxmark3.c, client/proxmark3.h, client/Makefile: Update accordingly. client/flash.h, client/flash.c, client/proxgui.cpp: Cosmetic changes. client/translate.h, client/command.c, client/gui.c, client/usb.c, client/prox.h: Remove. include/usb_cmd.h (CMD_ACQUIRE_RAW_ADC_SAMPLES_ISO_14443_SIM): Remove dead cmd. common/crc16.h: New file. common/crc16.c: Modify accordingly. common/iso14443crc.h: New file. common/iso14443_crc.c: Rename to common/iso14443crc.c: and modify accordingly. armsrc/lfops.c, armsrc/iso14443.c, armsrc/iso14443a.c: include .h files from the common directory instead of including the c files. common/Makefile.common, armsrc/Makefile: Modify accordingly.
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#include "proxusb.h"
#include "data.h"
#include "ui.h"
Client cleanup and restructuring. Stage 1... Next Step is refactoring some of the giant functions which are just copy/paste of some other ones with just a few line changes, removing unnecessary 'goto' etc. The MS Windows version is broken with this commit but will be fixed soon. Everything can't be done all at once :P The commands are now hierarchical, for example: "hf 14a read" vs. "hf 14b read". You can also request help: "hf help", "data help", "hf 15 help" etc. Indents are now space-based, not tab-based anymore. Hopefully no one will be trolling about it, considering the suicide-prone work being done here ;) client/cmdhw.c, client/proxusb.c, client/cmdhw.h, client/proxusb.h, client/cmdmain.c, client/cmdlfhid.c, client/cmdmain.h, client/cmdlfhid.h, client/data.c, client/data.h, client/cmdhf.c, client/cmdlf.c, client/cmdhf.h, client/cmdhf15.c, client/cmdhf14b.c, client/cmdlf.h, client/cmdhf15.h, client/cmdhf14b.h, client/cmddata.c, client/cmddata.h, client/ui.c, client/cmdparser.c, client/cmdlfti.c, client/ui.h, client/cmdlfem4x.c, client/cmdparser.h, client/cmdlfti.h, client/cmdlfem4x.h, client/graph.c, client/graph.h, client/cmdhf14a.c, client/cmdhf14a.h, client/cmdhflegic.c, client/cmdhflegic.c: New files. client/cli.c, client/flasher.c, client/snooper.c, client/proxmark3.c, client/proxmark3.h, client/Makefile: Update accordingly. client/flash.h, client/flash.c, client/proxgui.cpp: Cosmetic changes. client/translate.h, client/command.c, client/gui.c, client/usb.c, client/prox.h: Remove. include/usb_cmd.h (CMD_ACQUIRE_RAW_ADC_SAMPLES_ISO_14443_SIM): Remove dead cmd. common/crc16.h: New file. common/crc16.c: Modify accordingly. common/iso14443crc.h: New file. common/iso14443_crc.c: Rename to common/iso14443crc.c: and modify accordingly. armsrc/lfops.c, armsrc/iso14443.c, armsrc/iso14443a.c: include .h files from the common directory instead of including the c files. common/Makefile.common, armsrc/Makefile: Modify accordingly.
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#include "cmdparser.h"
#include "cmdhflegic.h"
#include "cmdmain.h"
Client cleanup and restructuring. Stage 1... Next Step is refactoring some of the giant functions which are just copy/paste of some other ones with just a few line changes, removing unnecessary 'goto' etc. The MS Windows version is broken with this commit but will be fixed soon. Everything can't be done all at once :P The commands are now hierarchical, for example: "hf 14a read" vs. "hf 14b read". You can also request help: "hf help", "data help", "hf 15 help" etc. Indents are now space-based, not tab-based anymore. Hopefully no one will be trolling about it, considering the suicide-prone work being done here ;) client/cmdhw.c, client/proxusb.c, client/cmdhw.h, client/proxusb.h, client/cmdmain.c, client/cmdlfhid.c, client/cmdmain.h, client/cmdlfhid.h, client/data.c, client/data.h, client/cmdhf.c, client/cmdlf.c, client/cmdhf.h, client/cmdhf15.c, client/cmdhf14b.c, client/cmdlf.h, client/cmdhf15.h, client/cmdhf14b.h, client/cmddata.c, client/cmddata.h, client/ui.c, client/cmdparser.c, client/cmdlfti.c, client/ui.h, client/cmdlfem4x.c, client/cmdparser.h, client/cmdlfti.h, client/cmdlfem4x.h, client/graph.c, client/graph.h, client/cmdhf14a.c, client/cmdhf14a.h, client/cmdhflegic.c, client/cmdhflegic.c: New files. client/cli.c, client/flasher.c, client/snooper.c, client/proxmark3.c, client/proxmark3.h, client/Makefile: Update accordingly. client/flash.h, client/flash.c, client/proxgui.cpp: Cosmetic changes. client/translate.h, client/command.c, client/gui.c, client/usb.c, client/prox.h: Remove. include/usb_cmd.h (CMD_ACQUIRE_RAW_ADC_SAMPLES_ISO_14443_SIM): Remove dead cmd. common/crc16.h: New file. common/crc16.c: Modify accordingly. common/iso14443crc.h: New file. common/iso14443_crc.c: Rename to common/iso14443crc.c: and modify accordingly. armsrc/lfops.c, armsrc/iso14443.c, armsrc/iso14443a.c: include .h files from the common directory instead of including the c files. common/Makefile.common, armsrc/Makefile: Modify accordingly.
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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"},
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{"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)"},
{"fill", CmdLegicRfFill, 0, "<offset> <length> <value> -- Fill/Write tag with constant value"},
Client cleanup and restructuring. Stage 1... Next Step is refactoring some of the giant functions which are just copy/paste of some other ones with just a few line changes, removing unnecessary 'goto' etc. The MS Windows version is broken with this commit but will be fixed soon. Everything can't be done all at once :P The commands are now hierarchical, for example: "hf 14a read" vs. "hf 14b read". You can also request help: "hf help", "data help", "hf 15 help" etc. Indents are now space-based, not tab-based anymore. Hopefully no one will be trolling about it, considering the suicide-prone work being done here ;) client/cmdhw.c, client/proxusb.c, client/cmdhw.h, client/proxusb.h, client/cmdmain.c, client/cmdlfhid.c, client/cmdmain.h, client/cmdlfhid.h, client/data.c, client/data.h, client/cmdhf.c, client/cmdlf.c, client/cmdhf.h, client/cmdhf15.c, client/cmdhf14b.c, client/cmdlf.h, client/cmdhf15.h, client/cmdhf14b.h, client/cmddata.c, client/cmddata.h, client/ui.c, client/cmdparser.c, client/cmdlfti.c, client/ui.h, client/cmdlfem4x.c, client/cmdparser.h, client/cmdlfti.h, client/cmdlfem4x.h, client/graph.c, client/graph.h, client/cmdhf14a.c, client/cmdhf14a.h, client/cmdhflegic.c, client/cmdhflegic.c: New files. client/cli.c, client/flasher.c, client/snooper.c, client/proxmark3.c, client/proxmark3.h, client/Makefile: Update accordingly. client/flash.h, client/flash.c, client/proxgui.cpp: Cosmetic changes. client/translate.h, client/command.c, client/gui.c, client/usb.c, client/prox.h: Remove. include/usb_cmd.h (CMD_ACQUIRE_RAW_ADC_SAMPLES_ISO_14443_SIM): Remove dead cmd. common/crc16.h: New file. common/crc16.c: Modify accordingly. common/iso14443crc.h: New file. common/iso14443_crc.c: Rename to common/iso14443crc.c: and modify accordingly. armsrc/lfops.c, armsrc/iso14443.c, armsrc/iso14443a.c: include .h files from the common directory instead of including the c files. common/Makefile.common, armsrc/Makefile: Modify accordingly.
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{NULL, NULL, 0, NULL}
};
int CmdHFLegic(const char *Cmd)
{
CmdsParse(CommandTable, Cmd);
return 0;
}
int CmdHelp(const char *Cmd)
{
CmdsHelp(CommandTable);
return 0;
}
/*
* Output BigBuf and deobfuscate LEGIC RF tag data.
* This is based on information given in the talk held
* by Henryk Ploetz and Karsten Nohl at 26c3
*/
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];
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)
);
i+=5;
if (wrc>0) {
PrintAndLog("WRC protected area:");
for (k=0, j=0; k < wrc && j<(sizeof(out_string)-3); 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);
}
if (wrp>wrc) {
PrintAndLog("Remaining write protected area:");
for (k=0, j=0; k < (wrp-wrc) && j<(sizeof(out_string)-3); 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);
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:");
for (k=0, j=0; k < (segment_len - wrp - 5) && j<(sizeof(out_string)-3); 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);
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if(byte_count == 0) byte_count = -1;
if(byte_count + offset > 1024) byte_count = 1024 - offset;
UsbCommand c={CMD_READER_LEGIC_RF, {offset, byte_count, 0}};
SendCommand(&c);
return 0;
}
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int CmdLegicLoad(const char *Cmd)
{
FILE *f = fopen(Cmd, "r");
if(!f) {
PrintAndLog("couldn't open '%s'", Cmd);
return -1;
}
char line[80]; int offset = 0; unsigned int data[8];
while(fgets(line, sizeof(line), f)) {
int res = sscanf(line, "%x %x %x %x %x %x %x %x",
&data[0], &data[1], &data[2], &data[3],
&data[4], &data[5], &data[6], &data[7]);
if(res != 8) {
PrintAndLog("Error: could not read samples");
fclose(f);
return -1;
}
UsbCommand c={CMD_DOWNLOADED_SIM_SAMPLES_125K, {offset, 0, 0}};
int j; for(j = 0; j < 8; j++) {
c.d.asBytes[j] = data[j];
}
SendCommand(&c);
WaitForResponse(CMD_ACK);
offset += 8;
}
fclose(f);
PrintAndLog("loaded %u samples", offset);
return 0;
}
int CmdLegicSave(const char *Cmd)
{
int n;
int requested = 1024;
int offset = 0;
char filename[1024];
sscanf(Cmd, " %s %i %i", filename, &requested, &offset);
if (offset % 4 != 0) {
PrintAndLog("Offset must be a multiple of 4");
return 0;
}
offset = offset/4;
int delivered = 0;
if (requested == 0) {
n = 12;
requested = 12;
} else {
n = requested/4;
}
FILE *f = fopen(filename, "w");
if(!f) {
PrintAndLog("couldn't open '%s'", Cmd+1);
return -1;
}
for (int i = offset; i < n+offset; i += 12) {
UsbCommand c = {CMD_DOWNLOAD_RAW_ADC_SAMPLES_125K, {i, 0, 0}};
SendCommand(&c);
WaitForResponse(CMD_DOWNLOADED_RAW_ADC_SAMPLES_125K);
for (int j = 0; j < 48; j += 8) {
fprintf(f, "%02x %02x %02x %02x %02x %02x %02x %02x\n",
sample_buf[j+0],
sample_buf[j+1],
sample_buf[j+2],
sample_buf[j+3],
sample_buf[j+4],
sample_buf[j+5],
sample_buf[j+6],
sample_buf[j+7]
);
delivered += 8;
if (delivered >= requested)
break;
}
if (delivered >= requested)
break;
}
fclose(f);
PrintAndLog("saved %u samples", delivered);
return 0;
}
int CmdLegicRfSim(const char *Cmd)
{
UsbCommand c={CMD_SIMULATE_TAG_LEGIC_RF};
c.arg[0] = 6;
c.arg[1] = 3;
c.arg[2] = 0;
sscanf(Cmd, " %i %i %i", &c.arg[0], &c.arg[1], &c.arg[2]);
SendCommand(&c);
return 0;
}
int CmdLegicRfWrite(const char *Cmd)
{
UsbCommand c={CMD_WRITER_LEGIC_RF};
int res = sscanf(Cmd, " 0x%x 0x%x", &c.arg[0], &c.arg[1]);
if(res != 2) {
PrintAndLog("Please specify the offset and length as two hex strings");
return -1;
}
SendCommand(&c);
return 0;
}
int CmdLegicRfFill(const char *Cmd)
{
UsbCommand cmd ={CMD_WRITER_LEGIC_RF};
int res = sscanf(Cmd, " 0x%x 0x%x 0x%x", &cmd.arg[0], &cmd.arg[1], &cmd.arg[2]);
if(res != 3) {
PrintAndLog("Please specify the offset, length and value as two hex strings");
return -1;
}
int i;
UsbCommand c={CMD_DOWNLOADED_SIM_SAMPLES_125K, {0, 0, 0}};
for(i = 0; i < 48; i++) {
c.d.asBytes[i] = cmd.arg[2];
}
for(i = 0; i < 22; i++) {
c.arg[0] = i*48;
SendCommand(&c);
WaitForResponse(CMD_ACK);
}
SendCommand(&cmd);
return 0;
}