ADD: Started to add a Presco LF clone functionality. Can calc Wiegand from printed number.

This commit is contained in:
iceman1001 2016-02-13 20:53:06 +01:00
parent 6bb7609cad
commit 5a6e19e614
5 changed files with 233 additions and 3 deletions

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@ -143,7 +143,8 @@ CMDSRCS = nonce2key/crapto1.c\
tea.c\
prng.c\
radixsort.c\
bucketsort.c
bucketsort.c\
cmdlfpresco.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

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@ -31,6 +31,7 @@
#include "cmdlfio.h"
#include "lfdemod.h"
#include "cmdlfviking.h"
#include "cmdlfpresco.h"
static int CmdHelp(const char *Cmd);
int usage_lf_cmdread(void) {
@ -1212,13 +1213,13 @@ static command_t CommandTable[] =
{"em4x", CmdLFEM4X, 1, "{ EM4X RFIDs... }"},
{"hid", CmdLFHID, 1, "{ HID RFIDs... }"},
{"hitag", CmdLFHitag, 1, "{ HITAG RFIDs... }"},
{"io", CmdLFIO, 1, "{ IOPROX RFIDs... }"},
{"io", CmdLFIO, 1, "{ IOPROX RFIDs... }"},
{"pcf7931", CmdLFPCF7931, 1, "{ PCF7931 RFIDs... }"},
{"presco", CmdLFPresco, 1, "{ Presco RFIDs... }"},
{"ti", CmdLFTI, 1, "{ TI RFIDs... }"},
{"t55xx", CmdLFT55XX, 1, "{ T55X7 RFIDs... }"},
{"viking", CmdLFViking, 1, "{ Viking RFIDs... }"},
{"config", CmdLFSetConfig, 0, "Set config for LF sampling, bit/sample, decimation, frequency"},
{"cmdread", CmdLFCommandRead, 0, "<off period> <'0' period> <'1' period> <command> ['h' 134] \n\t\t-- Modulate LF reader field to send command before read (all periods in microseconds)"},
{"flexdemod", CmdFlexdemod, 1, "Demodulate samples for FlexPass"},
{"indalademod", CmdIndalaDemod, 1, "['224'] -- Demodulate samples for Indala 64 bit UID (option '224' for 224 bit)"},

197
client/cmdlfpresco.c Normal file
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@ -0,0 +1,197 @@
//-----------------------------------------------------------------------------
//
// 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 Presco tag commands
//-----------------------------------------------------------------------------
#include <string.h>
#include <inttypes.h>
#include "cmdlfpresco.h"
static int CmdHelp(const char *Cmd);
int usage_lf_presco_clone(void){
PrintAndLog("clone a Presco tag to a T55x7 tag.");
PrintAndLog("Usage: lf presco clone <Card ID - 9 digits> <Q5>");
PrintAndLog("Options :");
PrintAndLog(" <Card Number> : 9 digit presco card number");
//PrintAndLog(" <Q5> : specify write to Q5 (t5555 instead of t55x7)");
PrintAndLog("");
PrintAndLog("Sample : lf presco clone 123456789");
return 0;
}
int usage_lf_presco_sim(void) {
PrintAndLog("Enables simulation of presco card with specified card number.");
PrintAndLog("Simulation runs until the button is pressed or another USB command is issued.");
PrintAndLog("Per presco format, the card number is 9 digit number and can contain *# chars. Larger values are truncated.");
PrintAndLog("");
PrintAndLog("Usage: lf presco sim <Card-Number>");
PrintAndLog("Options :");
PrintAndLog(" <Card Number> : 9 digit presco card number");
PrintAndLog("");
PrintAndLog("Sample : lf presco sim 123456789");
return 0;
}
// calc checksum
int GetWiegandFromPresco(const char *id, uint32_t *sitecode, uint32_t *usercode) {
uint8_t val = 0;
for (int index =0; index < strlen(id); ++index) {
// Get value from number string.
if ( id[index] == '*' ) val = 10;
if ( id[index] == '#') val = 11;
if ( id[index] >= 0x30 && id[index] <= 0x39 )
val = id[index] - 0x30;
*sitecode += val;
// last digit is only added, not multipled.
if ( index < strlen(id)-1 )
*sitecode *= 12;
}
*usercode = *sitecode % 65536;
*sitecode /= 16777216;
return 0;
}
int GetPrescoBits(uint32_t sitecode, uint32_t usercode, uint8_t *prescoBits) {
uint8_t pre[66];
memset(pre, 0, sizeof(pre));
prescoBits[7]=1;
num_to_bytebits(26, 8, pre);
uint8_t wiegand[24];
num_to_bytebits(sitecode, 8, wiegand);
num_to_bytebits(usercode, 16, wiegand+8);
wiegand_add_parity(pre+8, wiegand, 24);
size_t bitLen = addParity(pre, prescoBits+8, 66, 4, 1);
if (bitLen != 88) return 0;
return 1;
}
//see ASKDemod for what args are accepted
int CmdPrescoRead(const char *Cmd) {
PrintAndLog("Number: 123456789 --> Sitecode 30 | usercode 8665");
// GetWiegandFromPresco("123456789");
// read lf silently
//CmdLFRead("s");
// get samples silently
//getSamples("30000",false);
// demod and output viking ID
//return CmdVikingDemod(Cmd);
return 0;
}
int CmdPrescoClone(const char *Cmd) {
char cmdp = param_getchar(Cmd, 0);
if (strlen(Cmd) == 0 || cmdp == 'h' || cmdp == 'H') return usage_lf_presco_clone();
uint32_t sitecode=0, usercode=0;
uint8_t bits[96];
uint8_t *bs = bits;
memset(bs,0,sizeof(bits));
uint32_t blocks[5] = {T55x7_MODULATION_MANCHESTER | T55x7_BITRATE_RF_32 | 4<<T55x7_MAXBLOCK_SHIFT | T55x7_ST_TERMINATOR, 0, 0, 0, 5};
if (param_getchar(Cmd, 3) == 'Q' || param_getchar(Cmd, 3) == 'q')
blocks[0] = T5555_MODULATION_MANCHESTER | 32<<T5555_BITRATE_SHIFT | 4<<T5555_MAXBLOCK_SHIFT | T5555_ST_TERMINATOR;
// get wiegand from printed number.
GetWiegandFromPresco(Cmd, &sitecode, &usercode);
if ((sitecode & 0xFF) != sitecode) {
sitecode &= 0xFF;
PrintAndLog("Facility-Code Truncated to 8-bits (Presco): %u", sitecode);
}
if ((usercode & 0xFFFF) != usercode) {
usercode &= 0xFFFF;
PrintAndLog("Card Number Truncated to 16-bits (Presco): %u", usercode);
}
if ( !GetPrescoBits(sitecode, usercode, 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);
blocks[4] = bytebits_to_byte(bs+96,32);
PrintAndLog("Preparing to clone Presco to T55x7 with SiteCode: %u, UserCode: %u", sitecode, usercode);
PrintAndLog("Blk | Data ");
PrintAndLog("----+------------");
PrintAndLog(" 00 | 0x%08x", blocks[0]);
PrintAndLog(" 01 | 0x%08x", blocks[1]);
PrintAndLog(" 02 | 0x%08x", blocks[2]);
PrintAndLog(" 03 | 0x%08x", blocks[3]);
PrintAndLog(" 04 | 0x%08x", blocks[4]);
// UsbCommand resp;
// UsbCommand c = {CMD_T55XX_WRITE_BLOCK, {0,0,0}};
// for (uint8_t 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 CmdPrescoSim(const char *Cmd) {
// uint32_t id = 0;
// uint64_t rawID = 0;
// uint8_t clk = 32, encoding = 1, separator = 0, invert = 0;
// char cmdp = param_getchar(Cmd, 0);
// if (strlen(Cmd) == 0 || cmdp == 'h' || cmdp == 'H') return usage_lf_presco_sim();
// id = param_get32ex(Cmd, 0, 0, 16);
// if (id == 0) return usage_lf_presco_sim();
//rawID = getVikingBits(id);
// uint16_t arg1, arg2;
// size_t size = 64;
// arg1 = clk << 8 | encoding;
// arg2 = invert << 8 | separator;
// PrintAndLog("Simulating - ID: %08X, Raw: %08X%08X",id,(uint32_t)(rawID >> 32),(uint32_t) (rawID & 0xFFFFFFFF));
// UsbCommand c = {CMD_ASK_SIM_TAG, {arg1, arg2, size}};
// num_to_bytebits(rawID, size, c.d.asBytes);
// clearCommandBuffer();
// SendCommand(&c);
return 0;
}
static command_t CommandTable[] = {
{"help", CmdHelp, 1, "This help"},
{"read", CmdPrescoRead, 0, "Attempt to read and Extract tag data"},
{"clone", CmdPrescoClone, 0, "<8 digit ID number> clone presco tag"},
// {"sim", CmdPrescoSim, 0, "<8 digit ID number> simulate presco tag"},
{NULL, NULL, 0, NULL}
};
int CmdLFPresco(const char *Cmd) {
CmdsParse(CommandTable, Cmd);
return 0;
}
int CmdHelp(const char *Cmd) {
CmdsHelp(CommandTable);
return 0;
}

30
client/cmdlfpresco.h Normal file
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@ -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 CMDLFPRESCO_H__
#define CMDLFPRESCO_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
int CmdLFPresco(const char *Cmd);
int CmdPrescoClone(const char *Cmd);
//int CmdPrescoSim(const char *Cmd);
int usage_lf_presco_clone(void);
int usage_lf_presco_sim(void);
int GetWiegandFromPresco(const char *id, uint32_t *sitecode, uint32_t *usercode);
#endif

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@ -30,6 +30,7 @@
#define T55X7_VIKING_CONFIG_BLOCK 0x00088040 // compat mode, data rate 32, Manchester, 2 data blocks
#define T55X7_NORALYS_CONFIG_BLOCK 0x00088C6A // compat mode, (NORALYS - KCP3000)
#define T55X7_IOPROX_CONFIG_BLOCK 0x00147040 // maxblock 2
#define T55X7_PRESCO_CONFIG_BLOCK 0x00088088 // data rate 32, Manchester, 5 data blocks, STT
#define T55X7_bin 0b0010
#define T5555_DEFAULT_CONFIG_BLOCK 0x6001F004 // data rate 64 , ask, manchester, 2 data blocks?