mirror of
https://github.com/RfidResearchGroup/proxmark3.git
synced 2024-09-20 15:26:13 +08:00
282 lines
10 KiB
C
282 lines
10 KiB
C
//-----------------------------------------------------------------------------
|
|
//
|
|
// 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 "cmdlfpresco.h"
|
|
|
|
#include <string.h>
|
|
#include <stdio.h>
|
|
#include <stdlib.h>
|
|
#include <ctype.h>
|
|
|
|
#include "commonutil.h" // ARRAYLEN
|
|
#include "cmdparser.h" // command_t
|
|
#include "comms.h"
|
|
#include "ui.h"
|
|
#include "cmddata.h"
|
|
#include "cmdlf.h"
|
|
#include "protocols.h" // for T55xx config register definitions
|
|
#include "lfdemod.h" // parityTest
|
|
#include "cmdlft55xx.h" // verifywrite
|
|
|
|
static int CmdHelp(const char *Cmd);
|
|
|
|
static int usage_lf_presco_clone(void) {
|
|
PrintAndLogEx(NORMAL, "clone a Presco tag to a T55x7 tag.");
|
|
PrintAndLogEx(NORMAL, "Usage: lf presco clone [h] d <Card-ID> c <hex-ID> <Q5>");
|
|
PrintAndLogEx(NORMAL, "Options:");
|
|
PrintAndLogEx(NORMAL, " h : this help");
|
|
PrintAndLogEx(NORMAL, " d <Card-ID> : 9 digit presco card ID");
|
|
PrintAndLogEx(NORMAL, " c <hex-ID> : 8 digit hex card number");
|
|
PrintAndLogEx(NORMAL, " <Q5> : specify write to Q5 (t5555 instead of t55x7)");
|
|
PrintAndLogEx(NORMAL, "");
|
|
PrintAndLogEx(NORMAL, "Examples:");
|
|
PrintAndLogEx(NORMAL, " lf presco clone d 123456789");
|
|
return PM3_SUCCESS;
|
|
}
|
|
|
|
static int usage_lf_presco_sim(void) {
|
|
PrintAndLogEx(NORMAL, "Enables simulation of presco card with specified card number.");
|
|
PrintAndLogEx(NORMAL, "Simulation runs until the button is pressed or another USB command is issued.");
|
|
PrintAndLogEx(NORMAL, "Per presco format, the card number is 9 digit number and can contain *# chars. Larger values are truncated.");
|
|
PrintAndLogEx(NORMAL, "");
|
|
PrintAndLogEx(NORMAL, "Usage: lf presco sim [h] d <Card-ID> or c <hex-ID>");
|
|
PrintAndLogEx(NORMAL, "Options:");
|
|
PrintAndLogEx(NORMAL, " h : this help");
|
|
PrintAndLogEx(NORMAL, " d <Card-ID> : 9 digit presco card number");
|
|
PrintAndLogEx(NORMAL, " c <hex-ID> : 8 digit hex card number");
|
|
PrintAndLogEx(NORMAL, "");
|
|
PrintAndLogEx(NORMAL, "Examples:");
|
|
PrintAndLogEx(NORMAL, " lf presco sim d 123456789");
|
|
return PM3_SUCCESS;
|
|
}
|
|
|
|
//see ASKDemod for what args are accepted
|
|
static int CmdPrescoDemod(const char *Cmd) {
|
|
(void)Cmd; // Cmd is not used so far
|
|
bool st = true;
|
|
if (ASKDemod_ext("32 0 0 0 0 a", false, false, 1, &st) != PM3_SUCCESS) {
|
|
PrintAndLogEx(DEBUG, "DEBUG: Error Presco ASKDemod failed");
|
|
return PM3_ESOFT;
|
|
}
|
|
size_t size = DemodBufferLen;
|
|
int ans = detectPresco(DemodBuffer, &size);
|
|
if (ans < 0) {
|
|
if (ans == -1)
|
|
PrintAndLogEx(DEBUG, "DEBUG: Error - Presco: too few bits found");
|
|
else if (ans == -2)
|
|
PrintAndLogEx(DEBUG, "DEBUG: Error - Presco: preamble not found");
|
|
else if (ans == -3)
|
|
PrintAndLogEx(DEBUG, "DEBUG: Error - Presco: Size not correct: %zu", size);
|
|
else
|
|
PrintAndLogEx(DEBUG, "DEBUG: Error - Presco: ans: %d", ans);
|
|
return PM3_ESOFT;
|
|
}
|
|
setDemodBuff(DemodBuffer, 128, ans);
|
|
setClockGrid(g_DemodClock, g_DemodStartIdx + (ans * g_DemodClock));
|
|
|
|
//got a good demod
|
|
uint32_t raw1 = bytebits_to_byte(DemodBuffer, 32);
|
|
uint32_t raw2 = bytebits_to_byte(DemodBuffer + 32, 32);
|
|
uint32_t raw3 = bytebits_to_byte(DemodBuffer + 64, 32);
|
|
uint32_t raw4 = bytebits_to_byte(DemodBuffer + 96, 32);
|
|
uint32_t cardid = raw4;
|
|
PrintAndLogEx(SUCCESS, "Presco Tag Found: Card ID %08X, Raw: %08X%08X%08X%08X", cardid, raw1, raw2, raw3, raw4);
|
|
|
|
uint32_t sitecode = 0, usercode = 0, fullcode = 0;
|
|
bool Q5 = false;
|
|
char cmd[12] = {0};
|
|
sprintf(cmd, "H %08X", cardid);
|
|
getWiegandFromPresco(cmd, &sitecode, &usercode, &fullcode, &Q5);
|
|
PrintAndLogEx(SUCCESS, "SiteCode %u, UserCode %u, FullCode, %08X", sitecode, usercode, fullcode);
|
|
return PM3_SUCCESS;
|
|
}
|
|
|
|
//see ASKDemod for what args are accepted
|
|
static int CmdPrescoRead(const char *Cmd) {
|
|
// Presco Number: 123456789 --> Sitecode 30 | usercode 8665
|
|
lf_read(true, 12000);
|
|
return CmdPrescoDemod(Cmd);
|
|
}
|
|
|
|
// takes base 12 ID converts to hex
|
|
// Or takes 8 digit hex ID
|
|
static int CmdPrescoClone(const char *Cmd) {
|
|
|
|
bool Q5 = false;
|
|
uint32_t sitecode = 0, usercode = 0, fullcode = 0;
|
|
uint32_t blocks[5] = {T55x7_MODULATION_MANCHESTER | T55x7_BITRATE_RF_32 | 4 << T55x7_MAXBLOCK_SHIFT | T55x7_ST_TERMINATOR, 0, 0, 0, 0};
|
|
|
|
// get wiegand from printed number.
|
|
if (getWiegandFromPresco(Cmd, &sitecode, &usercode, &fullcode, &Q5) == PM3_EINVARG) return usage_lf_presco_clone();
|
|
|
|
if (Q5)
|
|
blocks[0] = T5555_MODULATION_MANCHESTER | T5555_SET_BITRATE(32) | 4 << T5555_MAXBLOCK_SHIFT | T5555_ST_TERMINATOR;
|
|
|
|
if ((sitecode & 0xFF) != sitecode) {
|
|
sitecode &= 0xFF;
|
|
PrintAndLogEx(INFO, "Facility-Code Truncated to 8-bits (Presco): %u", sitecode);
|
|
}
|
|
|
|
if ((usercode & 0xFFFF) != usercode) {
|
|
usercode &= 0xFFFF;
|
|
PrintAndLogEx(INFO, "Card Number Truncated to 16-bits (Presco): %u", usercode);
|
|
}
|
|
|
|
blocks[1] = 0x10D00000; //preamble
|
|
blocks[2] = 0x00000000;
|
|
blocks[3] = 0x00000000;
|
|
blocks[4] = fullcode;
|
|
|
|
PrintAndLogEx(INFO, "Preparing to clone Presco to T55x7 with SiteCode: %u, UserCode: %u, FullCode: %08x", sitecode, usercode, fullcode);
|
|
print_blocks(blocks, ARRAYLEN(blocks));
|
|
|
|
return clone_t55xx_tag(blocks, ARRAYLEN(blocks));
|
|
}
|
|
|
|
// takes base 12 ID converts to hex
|
|
// Or takes 8 digit hex ID
|
|
static int CmdPrescoSim(const char *Cmd) {
|
|
uint32_t sitecode = 0, usercode = 0, fullcode = 0;
|
|
bool Q5 = false;
|
|
// get wiegand from printed number.
|
|
if (getWiegandFromPresco(Cmd, &sitecode, &usercode, &fullcode, &Q5) == PM3_EINVARG)
|
|
return usage_lf_presco_sim();
|
|
|
|
PrintAndLogEx(SUCCESS, "Simulating Presco - SiteCode: %u, UserCode: %u, FullCode: %08X", sitecode, usercode, fullcode);
|
|
|
|
uint8_t bs[128];
|
|
getPrescoBits(fullcode, bs);
|
|
|
|
lf_asksim_t *payload = calloc(1, sizeof(lf_asksim_t) + sizeof(bs));
|
|
payload->encoding = 1;
|
|
payload->invert = 0;
|
|
payload->separator = 1;
|
|
payload->clock = 32;
|
|
memcpy(payload->data, bs, sizeof(bs));
|
|
|
|
clearCommandBuffer();
|
|
SendCommandNG(CMD_LF_ASK_SIMULATE, (uint8_t *)payload, sizeof(lf_asksim_t) + sizeof(bs));
|
|
free(payload);
|
|
|
|
PacketResponseNG resp;
|
|
WaitForResponse(CMD_LF_ASK_SIMULATE, &resp);
|
|
|
|
PrintAndLogEx(INFO, "Done");
|
|
if (resp.status != PM3_EOPABORTED)
|
|
return resp.status;
|
|
return PM3_SUCCESS;
|
|
}
|
|
|
|
static command_t CommandTable[] = {
|
|
{"help", CmdHelp, AlwaysAvailable, "This help"},
|
|
{"read", CmdPrescoRead, IfPm3Lf, "Attempt to read and Extract tag data"},
|
|
{"clone", CmdPrescoClone, IfPm3Lf, "clone presco tag"},
|
|
{"sim", CmdPrescoSim, IfPm3Lf, "simulate presco tag"},
|
|
{NULL, NULL, NULL, NULL}
|
|
};
|
|
|
|
static int CmdHelp(const char *Cmd) {
|
|
(void)Cmd; // Cmd is not used so far
|
|
CmdsHelp(CommandTable);
|
|
return PM3_SUCCESS;
|
|
}
|
|
|
|
int CmdLFPresco(const char *Cmd) {
|
|
clearCommandBuffer();
|
|
return CmdsParse(CommandTable, Cmd);
|
|
}
|
|
|
|
// find presco preamble 0x10D in already demoded data
|
|
int detectPresco(uint8_t *dest, size_t *size) {
|
|
if (*size < 128 * 2) return -1; //make sure buffer has data
|
|
size_t startIdx = 0;
|
|
uint8_t preamble[] = {0, 0, 0, 1, 0, 0, 0, 0, 1, 1, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0};
|
|
if (!preambleSearch(dest, preamble, sizeof(preamble), size, &startIdx))
|
|
return -2; //preamble not found
|
|
if (*size != 128) return -3; //wrong demoded size
|
|
//return start position
|
|
return (int)startIdx;
|
|
}
|
|
|
|
// convert base 12 ID to sitecode & usercode & 8 bit other unknown code
|
|
int getWiegandFromPresco(const char *Cmd, uint32_t *sitecode, uint32_t *usercode, uint32_t *fullcode, bool *Q5) {
|
|
|
|
bool hex = false, errors = false;
|
|
uint8_t cmdp = 0;
|
|
char id[11];
|
|
int stringlen = 0;
|
|
memset(id, 0x00, sizeof(id));
|
|
|
|
while (param_getchar(Cmd, cmdp) != 0x00 && !errors) {
|
|
switch (tolower(param_getchar(Cmd, cmdp))) {
|
|
case 'h':
|
|
return PM3_EINVARG;
|
|
case 'c':
|
|
hex = true;
|
|
//get hex
|
|
*fullcode = param_get32ex(Cmd, cmdp + 1, 0, 16);
|
|
cmdp += 2;
|
|
break;
|
|
case 'd':
|
|
//param get string int param_getstr(const char *line, int paramnum, char * str)
|
|
stringlen = param_getstr(Cmd, cmdp + 1, id, sizeof(id));
|
|
if (stringlen < 2) return PM3_EINVARG;
|
|
cmdp += 2;
|
|
break;
|
|
case 'q':
|
|
*Q5 = true;
|
|
cmdp++;
|
|
break;
|
|
default:
|
|
PrintAndLogEx(WARNING, "Unknown parameter '%c'", param_getchar(Cmd, cmdp));
|
|
errors = 1;
|
|
break;
|
|
}
|
|
}
|
|
//Validations
|
|
if (errors || cmdp == 0) return PM3_EINVARG;
|
|
|
|
if (!hex) {
|
|
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;
|
|
|
|
*fullcode += val;
|
|
|
|
// last digit is only added, not multipled.
|
|
if (index < strlen(id) - 1)
|
|
*fullcode *= 12;
|
|
}
|
|
}
|
|
|
|
*usercode = *fullcode & 0x0000FFFF; //% 65566
|
|
*sitecode = (*fullcode >> 24) & 0x000000FF; // /= 16777216;
|
|
return PM3_SUCCESS;
|
|
}
|
|
|
|
// calc not certain - intended to get bitstream for programming / sim
|
|
int getPrescoBits(uint32_t fullcode, uint8_t *prescoBits) {
|
|
num_to_bytebits(0x10D00000, 32, prescoBits);
|
|
num_to_bytebits(0x00000000, 32, prescoBits + 32);
|
|
num_to_bytebits(0x00000000, 32, prescoBits + 64);
|
|
num_to_bytebits(fullcode, 32, prescoBits + 96);
|
|
return PM3_SUCCESS;
|
|
}
|
|
|
|
int demodPresco(void) {
|
|
return CmdPrescoDemod("");
|
|
}
|
|
|