From 50564be0f809e61f3148fb2f27db035b6362321f Mon Sep 17 00:00:00 2001
From: iceman1001 <iceman@iuse.se>
Date: Sat, 27 Feb 2016 19:47:10 +0100
Subject: [PATCH] ADD:  Started to add a "LF GUARD CLONE/SIM" functionality.
 *not working*  all thats needed now is fixing the transformation from
 FacilityCode/CardNumber -> raw data for t55x7.

---
 client/Makefile       |   3 +-
 client/cmdlf.c        |  26 +----
 client/cmdlf.h        |  25 +++++
 client/cmdlfguard.c   | 224 ++++++++++++++++++++++++++++++++++++++++++
 client/cmdlfguard.h   |  30 ++++++
 client/cmdlfpyramid.c |   7 +-
 6 files changed, 284 insertions(+), 31 deletions(-)
 create mode 100644 client/cmdlfguard.c
 create mode 100644 client/cmdlfguard.h

diff --git a/client/Makefile b/client/Makefile
index eabe0d38..3345aa8b 100644
--- a/client/Makefile
+++ b/client/Makefile
@@ -135,7 +135,8 @@ CMDSRCS = 	nonce2key/crapto1.c\
 			radixsort.c\
 			bucketsort.c\
 			cmdlfpresco.c\
-			cmdlfpyramid.c
+			cmdlfpyramid.c\
+			cmdlfguard.c
 
 ZLIBSRCS = deflate.c adler32.c trees.c zutil.c inflate.c inffast.c inftrees.c
 ZLIB_FLAGS = -DZ_SOLO -DZ_PREFIX -DNO_GZIP -DZLIB_PM3_TUNED 
diff --git a/client/cmdlf.c b/client/cmdlf.c
index 8469d80d..0f5d0dc0 100644
--- a/client/cmdlf.c
+++ b/client/cmdlf.c
@@ -7,32 +7,7 @@
 //-----------------------------------------------------------------------------
 // Low frequency commands
 //-----------------------------------------------------------------------------
-
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-#include <limits.h>
-#include "proxmark3.h"
-#include "data.h"
-#include "graph.h"
-#include "ui.h"
-#include "cmdparser.h"
-#include "cmdmain.h"
-#include "cmddata.h"
-#include "util.h"
 #include "cmdlf.h"
-#include "cmdlfhid.h"
-#include "cmdlfawid.h"
-#include "cmdlfti.h"
-#include "cmdlfem4x.h"
-#include "cmdlfhitag.h"
-#include "cmdlft55xx.h"
-#include "cmdlfpcf7931.h"
-#include "cmdlfio.h"
-#include "lfdemod.h"
-#include "cmdlfviking.h"
-#include "cmdlfpresco.h"
-#include "cmdlfpyramid.h"
 static int CmdHelp(const char *Cmd);
 
 int usage_lf_cmdread(void) {
@@ -1213,6 +1188,7 @@ static command_t CommandTable[] =
 	{"help",        CmdHelp,            1, "This help"},
 	{"awid",        CmdLFAWID,          1, "{ AWID RFIDs... }"},
 	{"em4x",        CmdLFEM4X,          1, "{ EM4X RFIDs... }"},
+	{"guard",       CmdLFGuard,         1, "{ Guardall RFIDs... }"},
 	{"hid",         CmdLFHID,           1, "{ HID RFIDs... }"},
 	{"hitag",       CmdLFHitag,         1, "{ HITAG RFIDs... }"},
 	{"io",			CmdLFIO,			1, "{ IOPROX RFIDs... }"},
diff --git a/client/cmdlf.h b/client/cmdlf.h
index 5dbb9b6e..21c79b42 100644
--- a/client/cmdlf.h
+++ b/client/cmdlf.h
@@ -10,6 +10,31 @@
 
 #ifndef CMDLF_H__
 #define CMDLF_H__
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <limits.h>
+#include "proxmark3.h"
+#include "data.h"
+#include "graph.h"
+#include "ui.h"
+#include "cmdparser.h"
+#include "cmdmain.h"
+#include "cmddata.h"
+#include "util.h"
+#include "cmdlfhid.h"
+#include "cmdlfawid.h"
+#include "cmdlfti.h"
+#include "cmdlfem4x.h"
+#include "cmdlfhitag.h"
+#include "cmdlft55xx.h"
+#include "cmdlfpcf7931.h"
+#include "cmdlfio.h"
+#include "lfdemod.h"
+#include "cmdlfviking.h"
+#include "cmdlfpresco.h"
+#include "cmdlfpyramid.h"
+#include "cmdlfguard.h"
 
 int CmdLF(const char *Cmd);
 
diff --git a/client/cmdlfguard.c b/client/cmdlfguard.c
new file mode 100644
index 00000000..b2079d83
--- /dev/null
+++ b/client/cmdlfguard.c
@@ -0,0 +1,224 @@
+//-----------------------------------------------------------------------------
+//
+// 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.
+//-----------------------------------------------------------------------------
+// Low frequency Farpoint / Pyramid tag commands
+//-----------------------------------------------------------------------------
+#include <string.h>
+#include <inttypes.h>
+#include "cmdlfguard.h"
+static int CmdHelp(const char *Cmd);
+
+int usage_lf_guard_clone(void){
+	PrintAndLog("clone a Guardall tag to a T55x7 tag.");
+	PrintAndLog("The facility-code is 8-bit and the card number is 16-bit.  Larger values are truncated. ");
+	PrintAndLog("Currently work only on 26bit");
+	PrintAndLog("");
+	PrintAndLog("Usage: lf guard clone <Facility-Code> <Card-Number>");
+	PrintAndLog("Options :");
+	PrintAndLog("  <Facility-Code> :  8-bit value facility code");
+	PrintAndLog("  <Card Number>   : 16-bit value card number");
+	PrintAndLog("");
+	PrintAndLog("Sample  : lf guard clone 123 11223");
+	return 0;
+}
+
+int usage_lf_guard_sim(void) {
+	PrintAndLog("Enables simulation of Guardall card with specified card number.");
+	PrintAndLog("Simulation runs until the button is pressed or another USB command is issued.");
+	PrintAndLog("The facility-code is 8-bit and the card number is 16-bit.  Larger values are truncated.");
+	PrintAndLog("Currently work only on 26bit");
+	PrintAndLog("");
+	PrintAndLog("Usage:  lf guard sim <Card-Number>");
+	PrintAndLog("Options :");
+	PrintAndLog("  <Facility-Code> :  8-bit value facility code");
+	PrintAndLog("  <Card Number>   : 16-bit value card number");
+	PrintAndLog("");
+	PrintAndLog("Sample  : lf guard sim 123 11223");
+	return 0;
+}
+
+
+// Works for 26bits.
+int GetGuardBits(uint32_t fc, uint32_t cn, uint8_t *guardBits) {
+  
+	// Intializes random number generator
+	time_t t;
+	srand((unsigned) time(&t));
+
+	uint8_t pre[96];
+	memset(pre, 0x00, sizeof(pre));
+
+	uint8_t index = 8;
+	
+	// preamble  6bits
+	pre[0] = 1;
+	pre[1] = 1;
+	pre[2] = 1;
+	pre[3] = 1;
+	pre[4] = 1;
+	//pre[5] = 0;
+
+	// add xor key
+	uint8_t xorKey = rand() % 0xFF;
+	num_to_bytebits(xorKey, 8, pre+index);
+	index += 8;
+	
+	// add format length
+	// len | hex | bin  wiegand pos fc/cn   
+	//  26 | 1A  | 0001 1010
+	num_to_bytebits(26, 8, pre+index);
+	//  36 | 24  | 0010 0100
+	//num_to_bytebits(36, 8, pre+index);
+	//  40 | 28  | 0010 1000
+	//num_to_bytebits(40, 8, pre+index);
+
+	index += 8;
+	
+	// 2bit checksum
+	// unknown today.
+	index += 2;
+	
+	// Get 26 wiegand from FacilityCode, CardNumber	
+	uint8_t wiegand[24];
+	memset(wiegand, 0x00, sizeof(wiegand));
+	num_to_bytebits(fc, 8, wiegand);
+	num_to_bytebits(cn, 16, wiegand+8);
+
+	// add wiegand parity bits (dest, source, len)
+	wiegand_add_parity(pre+index, wiegand, 24);
+
+	uint8_t tmp = 0, i = 0;
+	for (i = 2; i < 12; ++i) {
+		// // xor all bytes
+		// tmp = xorKey ^ bytebits_to_byte(pre + (i*8), 8);
+		
+		// // copy to out..
+		// num_to_bytebits(tmp, 8, pre + (i*8) );
+	}
+
+	// add spacer bit 0 every 5
+	
+	// swap nibbles
+	
+	
+	// copy to outarray
+	memcpy(guardBits, pre, sizeof(pre));
+	
+	printf(" | %s\n", sprint_bin(guardBits, 96) );
+	return 1;
+}
+
+int CmdGuardRead(const char *Cmd) {
+	CmdLFRead("s");
+	getSamples("30000",false);
+	return CmdG_Prox_II_Demod("");
+}
+
+int CmdGuardClone(const char *Cmd) {
+
+	char cmdp = param_getchar(Cmd, 0);
+	if (strlen(Cmd) == 0 || cmdp == 'h' || cmdp == 'H') return usage_lf_guard_clone();
+
+	uint32_t facilitycode=0, cardnumber=0, fc = 0, cn = 0;
+	uint8_t i;
+	uint8_t bs[96];
+	memset(bs, 0x00, sizeof(bs));
+	
+	//GuardProxII - compat mode, ASK/Biphase,  data rate 64, 3 data blocks
+	uint32_t blocks[5] = {T55x7_MODULATION_BIPHASE | T55x7_BITRATE_RF_64 | 3<<T55x7_MAXBLOCK_SHIFT, 0, 0, 0, 0};
+	
+//	if (param_getchar(Cmd, 3) == 'Q' || param_getchar(Cmd, 3) == 'q')
+//		blocks[0] = T5555_MODULATION_FSK2 | 50<<T5555_BITRATE_SHIFT | 4<<T5555_MAXBLOCK_SHIFT;
+
+	if (sscanf(Cmd, "%u %u", &fc, &cn ) != 2) return usage_lf_guard_clone();
+
+	facilitycode = (fc & 0x000000FF);
+	cardnumber = (cn & 0x0000FFFF);
+	
+	if ( !GetGuardBits(facilitycode, cardnumber, bs)) {
+		PrintAndLog("Error with tag bitstream generation.");
+		return 1;
+	}	
+
+	blocks[1] = bytebits_to_byte(bs,32);
+	blocks[2] = bytebits_to_byte(bs+32,32);
+	blocks[3] = bytebits_to_byte(bs+64,32);
+
+	PrintAndLog("Preparing to clone Guardall to T55x7 with Facility Code: %u, Card Number: %u", facilitycode, cardnumber);
+	PrintAndLog("Blk | Data ");
+	PrintAndLog("----+------------");
+	for ( i = 0; i<4; ++i )
+		PrintAndLog(" %02d | %08x", i, blocks[i]);
+
+	// UsbCommand resp;
+	// UsbCommand c = {CMD_T55XX_WRITE_BLOCK, {0,0,0}};
+
+	// for ( i = 0; i<5; ++i ) {
+		// c.arg[0] = blocks[i];
+		// c.arg[1] = i;
+		// clearCommandBuffer();
+		// SendCommand(&c);
+		// if (!WaitForResponseTimeout(CMD_ACK, &resp, 1000)){
+			// PrintAndLog("Error occurred, device did not respond during write operation.");
+			// return -1;
+		// }
+	// }
+    return 0;
+}
+
+int CmdGuardSim(const char *Cmd) {
+
+	char cmdp = param_getchar(Cmd, 0);
+	if (strlen(Cmd) == 0 || cmdp == 'h' || cmdp == 'H') return usage_lf_guard_sim();
+
+	uint32_t facilitycode = 0, cardnumber = 0, fc = 0, cn = 0;
+	
+	uint8_t bs[96];
+	size_t size = sizeof(bs);
+	memset(bs, 0x00, size);
+	
+	// Pyramid uses:  ASK Biphase, clk: 32, invert: 0
+	uint64_t arg1, arg2;
+	arg1 = (10 << 8) + 8;
+	arg2 = 32 | 0;
+
+	if (sscanf(Cmd, "%u %u", &fc, &cn ) != 2) return usage_lf_guard_sim();
+
+	facilitycode = (fc & 0x000000FF);
+	cardnumber = (cn & 0x0000FFFF);
+	
+	if ( !GetGuardBits(facilitycode, cardnumber, bs)) {
+		PrintAndLog("Error with tag bitstream generation.");
+		return 1;
+	}	
+
+	PrintAndLog("Simulating Guardall - Facility Code: %u, CardNumber: %u", facilitycode, cardnumber );
+	
+	UsbCommand c = {CMD_ASK_SIM_TAG, {arg1, arg2, size}};
+	memcpy(c.d.asBytes, bs, size);
+	clearCommandBuffer();
+	SendCommand(&c);
+	return 0;
+}
+
+static command_t CommandTable[] = {
+    {"help",	CmdHelp,		1, "This help"},
+	{"read",	CmdGuardRead,  0, "Attempt to read and extract tag data"},
+	{"clone",	CmdGuardClone, 0, "<Facility-Code> <Card Number>  clone Guardall tag"},
+	{"sim",		CmdGuardSim,   0, "<Facility-Code> <Card Number>  simulate Guardall tag"},
+    {NULL, NULL, 0, NULL}
+};
+
+int CmdLFGuard(const char *Cmd) {
+	clearCommandBuffer();
+    CmdsParse(CommandTable, Cmd);
+    return 0;
+}
+
+int CmdHelp(const char *Cmd) {
+    CmdsHelp(CommandTable);
+    return 0;
+}
diff --git a/client/cmdlfguard.h b/client/cmdlfguard.h
new file mode 100644
index 00000000..68ab8f2b
--- /dev/null
+++ b/client/cmdlfguard.h
@@ -0,0 +1,30 @@
+//-----------------------------------------------------------------------------
+//
+// 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.
+//-----------------------------------------------------------------------------
+// Low frequency T55xx commands
+//-----------------------------------------------------------------------------
+#ifndef CMDLFGUARD_H__
+#define CMDLFGUARD_H__
+#include "proxmark3.h"
+#include "ui.h"
+#include "util.h"
+#include "graph.h"
+#include "cmdparser.h"
+#include "cmddata.h"
+#include "cmdmain.h"
+#include "cmdlf.h"
+#include "protocols.h"  // for T55xx config register definitions
+#include "lfdemod.h"    // parityTest
+#include "crc.h"
+
+int CmdLFGuard(const char *Cmd);
+int CmdGuardClone(const char *Cmd);
+int CmdGuardSim(const char *Cmd);
+
+int usage_lf_guard_clone(void);
+int usage_lf_quard_sim(void);
+#endif
+
diff --git a/client/cmdlfpyramid.c b/client/cmdlfpyramid.c
index 0f992cc2..990dccbb 100644
--- a/client/cmdlfpyramid.c
+++ b/client/cmdlfpyramid.c
@@ -40,7 +40,6 @@ int usage_lf_pyramid_sim(void) {
 	return 0;
 }
 
-
 // Works for 26bits.
 int GetPyramidBits(uint32_t fc, uint32_t cn, uint8_t *pyramidBits) {
 
@@ -60,10 +59,8 @@ int GetPyramidBits(uint32_t fc, uint32_t cn, uint8_t *pyramidBits) {
 	wiegand_add_parity(pre+80, wiegand, 24);
 	
 	// add paritybits	(bitsource, dest, sourcelen, paritylen, parityType (odd, even,)
-	size_t s = addParity(pre+8, pyramidBits+8, 102, 8, 1);
-	
-	//printf(" %d |", s);
-	
+	addParity(pre+8, pyramidBits+8, 102, 8, 1);
+
 	// add checksum		
 	uint8_t csBuff[13];
 	for (uint8_t i = 0; i < 13; i++)
-- 
2.39.2