Files
proxmark3/client/src/cmdlfem4x.c
2020-10-16 01:30:08 +02:00

2069 lines
76 KiB
C

//-----------------------------------------------------------------------------
// 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.
//-----------------------------------------------------------------------------
// Low frequency EM4x commands
//-----------------------------------------------------------------------------
#include "cmdlfem4x.h"
#include "cmdlfem4x50.h"
#include <stdio.h>
#include <string.h>
#include <inttypes.h>
#include <ctype.h>
#include <stdlib.h>
#include "fileutils.h"
#include "cmdparser.h" // command_t
#include "comms.h"
#include "commonutil.h"
#include "common.h"
#include "util_posix.h"
#include "protocols.h"
#include "ui.h"
#include "proxgui.h"
#include "graph.h"
#include "cmddata.h"
#include "cmdlf.h"
#include "lfdemod.h"
#include "generator.h"
#include "cliparser.h"
#include "cmdhw.h"
static uint64_t g_em410xid = 0;
static int CmdHelp(const char *Cmd);
//////////////// 410x commands
static int usage_lf_em410x_demod(void) {
PrintAndLogEx(NORMAL, "Usage: lf em 410x_demod [h] [clock] <0|1> [maxError]");
PrintAndLogEx(NORMAL, "Options:");
PrintAndLogEx(NORMAL, " h - this help");
PrintAndLogEx(NORMAL, " clock - set clock as integer, optional, if not set, autodetect.");
PrintAndLogEx(NORMAL, " <0|1> - 0 normal output, 1 for invert output");
PrintAndLogEx(NORMAL, " maxerror - set maximum allowed errors, default = 100.");
PrintAndLogEx(NORMAL, "");
PrintAndLogEx(NORMAL, "Examples:");
PrintAndLogEx(NORMAL, _YELLOW_(" lf em 410x_demod") " = demod an EM410x Tag ID from GraphBuffer");
PrintAndLogEx(NORMAL, _YELLOW_(" lf em 410x_demod 32") " = demod an EM410x Tag ID from GraphBuffer using a clock of RF/32");
PrintAndLogEx(NORMAL, _YELLOW_(" lf em 410x_demod 32 1") " = demod an EM410x Tag ID from GraphBuffer using a clock of RF/32 and inverting data");
PrintAndLogEx(NORMAL, _YELLOW_(" lf em 410x_demod 1") " = demod an EM410x Tag ID from GraphBuffer while inverting data");
PrintAndLogEx(NORMAL, _YELLOW_(" lf em 410x_demod 64 1 0") " = demod an EM410x Tag ID from GraphBuffer using a clock of RF/64 and inverting data and allowing 0 demod errors");
return PM3_SUCCESS;
}
static int usage_lf_em410x_watch(void) {
PrintAndLogEx(NORMAL, "Enables IOProx compatible reader mode printing details of scanned tags.");
PrintAndLogEx(NORMAL, "By default, values are printed and logged until the button is pressed or another USB command is issued.");
PrintAndLogEx(NORMAL, "");
PrintAndLogEx(NORMAL, "Usage: lf em 410x_watch");
PrintAndLogEx(NORMAL, "");
PrintAndLogEx(NORMAL, "Examples:");
PrintAndLogEx(NORMAL, _YELLOW_(" lf em 410x_watch"));
return PM3_SUCCESS;
}
static int usage_lf_em410x_clone(void) {
PrintAndLogEx(NORMAL, "Writes EM410x ID to a T55x7 or Q5/T5555 tag");
PrintAndLogEx(NORMAL, "");
PrintAndLogEx(NORMAL, "Usage: lf em 410x_clone [h] <id> <card> [clock]");
PrintAndLogEx(NORMAL, "Options:");
PrintAndLogEx(NORMAL, " h - this help");
PrintAndLogEx(NORMAL, " <id> - ID number");
PrintAndLogEx(NORMAL, " <card> - 0|1 0 = Q5/T5555, 1 = T55x7");
PrintAndLogEx(NORMAL, " <clock> - 16|32|40|64, optional, set R/F clock rate, defaults to 64");
PrintAndLogEx(NORMAL, "Examples:");
PrintAndLogEx(NORMAL, _YELLOW_(" lf em 410x_clone 0F0368568B 1") " = write ID to t55x7 card");
return PM3_SUCCESS;
}
static int usage_lf_em410x_ws(void) {
PrintAndLogEx(NORMAL, "Watch 'nd Spoof, activates reader, waits until a EM410x tag gets presented then it starts simulating the found UID");
PrintAndLogEx(NORMAL, "");
PrintAndLogEx(NORMAL, "Usage: lf em 410x_spoof [h]");
PrintAndLogEx(NORMAL, "Options:");
PrintAndLogEx(NORMAL, " h - this help");
PrintAndLogEx(NORMAL, "Examples:");
PrintAndLogEx(NORMAL, _YELLOW_(" lf em 410x_spoof"));
return PM3_SUCCESS;
}
static int usage_lf_em410x_sim(void) {
PrintAndLogEx(NORMAL, "Simulating EM410x tag");
PrintAndLogEx(NORMAL, "");
PrintAndLogEx(NORMAL, "Usage: lf em 410x_sim [h] <uid> <clock>");
PrintAndLogEx(NORMAL, "Options:");
PrintAndLogEx(NORMAL, " h - this help");
PrintAndLogEx(NORMAL, " uid - uid (10 HEX symbols)");
PrintAndLogEx(NORMAL, " clock - clock (32|64) (optional)");
PrintAndLogEx(NORMAL, "Examples:");
PrintAndLogEx(NORMAL, _YELLOW_(" lf em 410x_sim 0F0368568B"));
PrintAndLogEx(NORMAL, _YELLOW_(" lf em 410x_sim 0F0368568B 32"));
return PM3_SUCCESS;
}
static int usage_lf_em410x_brute(void) {
PrintAndLogEx(NORMAL, "Bruteforcing by emulating EM410x tag");
PrintAndLogEx(NORMAL, "");
PrintAndLogEx(NORMAL, "Usage: lf em 410x_brute [h] ids.txt [d 2000] [c clock]");
PrintAndLogEx(NORMAL, "Options:");
PrintAndLogEx(NORMAL, " h - this help");
PrintAndLogEx(NORMAL, " ids.txt - file with UIDs in HEX format, one per line");
PrintAndLogEx(NORMAL, " d (2000) - pause delay in milliseconds between UIDs simulation, default 1000 ms (optional)");
PrintAndLogEx(NORMAL, " c (32) - clock (32|64), default 64 (optional)");
PrintAndLogEx(NORMAL, "Examples:");
PrintAndLogEx(NORMAL, _YELLOW_(" lf em 410x_brute ids.txt"));
PrintAndLogEx(NORMAL, _YELLOW_(" lf em 410x_brute ids.txt c 32"));
PrintAndLogEx(NORMAL, _YELLOW_(" lf em 410x_brute ids.txt d 3000"));
PrintAndLogEx(NORMAL, _YELLOW_(" lf em 410x_brute ids.txt d 3000 c 32"));
return PM3_SUCCESS;
}
//////////////// 4205 / 4305 commands
static int usage_lf_em4x05_dump(void) {
PrintAndLogEx(NORMAL, "Dump EM4x05/EM4x69. Tag must be on antenna. ");
PrintAndLogEx(NORMAL, "");
PrintAndLogEx(NORMAL, "Usage: lf em 4x05_dump [h] [f <filename prefix>] <pwd>");
PrintAndLogEx(NORMAL, "Options:");
PrintAndLogEx(NORMAL, " h - this help");
PrintAndLogEx(NORMAL, " f <filename prefix> - overide filename prefix (optional). Default is based on UID");
PrintAndLogEx(NORMAL, " pwd - password (hex) (optional)");
PrintAndLogEx(NORMAL, "Examples:");
PrintAndLogEx(NORMAL, " lf em 4x05_dump");
PrintAndLogEx(NORMAL, " lf em 4x05_dump 11223344");
PrintAndLogEx(NORMAL, " lf em 4x05_dump f card1 11223344");
return PM3_SUCCESS;
}
static int usage_lf_em4x05_wipe(void) {
PrintAndLogEx(NORMAL, "Wipe EM4x05/EM4x69. Tag must be on antenna. ");
PrintAndLogEx(NORMAL, "");
PrintAndLogEx(NORMAL, "Usage: lf em 4x05_wipe [h] <pwd>");
PrintAndLogEx(NORMAL, "Options:");
PrintAndLogEx(NORMAL, " h - this help");
PrintAndLogEx(NORMAL, " c - chip type : 0 em4205");
PrintAndLogEx(NORMAL, " 1 em4305 (default)");
PrintAndLogEx(NORMAL, " pwd - password (hex) (optional)");
PrintAndLogEx(NORMAL, "Examples:");
PrintAndLogEx(NORMAL, " lf em 4x05_wipe");
PrintAndLogEx(NORMAL, " lf em 4x05_wipe 11223344");
return PM3_SUCCESS;
}
static int usage_lf_em4x05_read(void) {
PrintAndLogEx(NORMAL, "Read EM4x05/EM4x69. Tag must be on antenna. ");
PrintAndLogEx(NORMAL, "");
PrintAndLogEx(NORMAL, "Usage: lf em 4x05_read [h] <address> <pwd>");
PrintAndLogEx(NORMAL, "Options:");
PrintAndLogEx(NORMAL, " h - this help");
PrintAndLogEx(NORMAL, " address - memory address to read. (0-15)");
PrintAndLogEx(NORMAL, " pwd - password (hex) (optional)");
PrintAndLogEx(NORMAL, "Examples:");
PrintAndLogEx(NORMAL, " lf em 4x05_read 1");
PrintAndLogEx(NORMAL, " lf em 4x05_read 1 11223344");
return PM3_SUCCESS;
}
static int usage_lf_em4x05_write(void) {
PrintAndLogEx(NORMAL, "Write EM4x05/4x69. Tag must be on antenna. ");
PrintAndLogEx(NORMAL, "");
PrintAndLogEx(NORMAL, "Usage: lf em 4x05_write [h] <address> <data> <pwd>");
PrintAndLogEx(NORMAL, "Options:");
PrintAndLogEx(NORMAL, " h - this help");
PrintAndLogEx(NORMAL, " address - memory address to write to. (0-13, 99 for Protection Words)");
PrintAndLogEx(NORMAL, " data - data to write (hex)");
PrintAndLogEx(NORMAL, " pwd - password (hex) (optional)");
PrintAndLogEx(NORMAL, "Examples:");
PrintAndLogEx(NORMAL, " lf em 4x05_write 1 deadc0de");
PrintAndLogEx(NORMAL, " lf em 4x05_write 1 deadc0de 11223344");
return PM3_SUCCESS;
}
static int usage_lf_em4x05_info(void) {
PrintAndLogEx(NORMAL, "Tag information EM4205/4305/4469//4569 tags. Tag must be on antenna.");
PrintAndLogEx(NORMAL, "");
PrintAndLogEx(NORMAL, "Usage: lf em 4x05_info [h] <pwd>");
PrintAndLogEx(NORMAL, "Options:");
PrintAndLogEx(NORMAL, " h - this help");
PrintAndLogEx(NORMAL, " pwd - password (hex) (optional)");
PrintAndLogEx(NORMAL, "Examples:");
PrintAndLogEx(NORMAL, " lf em 4x05_info");
PrintAndLogEx(NORMAL, " lf em 4x05_info deadc0de");
return PM3_SUCCESS;
}
/* Read the ID of an EM410x tag.
* Format:
* 1111 1111 1 <-- standard non-repeatable header
* XXXX [row parity bit] <-- 10 rows of 5 bits for our 40 bit tag ID
* ....
* CCCC <-- each bit here is parity for the 10 bits above in corresponding column
* 0 <-- stop bit, end of tag
*/
// Construct the graph for emulating an EM410X tag
static void ConstructEM410xEmulGraph(const char *uid, const uint8_t clock) {
int i, j, binary[4], parity[4];
uint32_t n;
/* clear our graph */
ClearGraph(true);
/* write 16 zero bit sledge */
for (i = 0; i < 20; i++)
AppendGraph(false, clock, 0);
/* write 9 start bits */
for (i = 0; i < 9; i++)
AppendGraph(false, clock, 1);
/* for each hex char */
parity[0] = parity[1] = parity[2] = parity[3] = 0;
for (i = 0; i < 10; i++) {
/* read each hex char */
sscanf(&uid[i], "%1x", &n);
for (j = 3; j >= 0; j--, n /= 2)
binary[j] = n % 2;
/* append each bit */
AppendGraph(false, clock, binary[0]);
AppendGraph(false, clock, binary[1]);
AppendGraph(false, clock, binary[2]);
AppendGraph(false, clock, binary[3]);
/* append parity bit */
AppendGraph(false, clock, binary[0] ^ binary[1] ^ binary[2] ^ binary[3]);
/* keep track of column parity */
parity[0] ^= binary[0];
parity[1] ^= binary[1];
parity[2] ^= binary[2];
parity[3] ^= binary[3];
}
/* parity columns */
AppendGraph(false, clock, parity[0]);
AppendGraph(false, clock, parity[1]);
AppendGraph(false, clock, parity[2]);
AppendGraph(false, clock, parity[3]);
/* stop bit */
AppendGraph(true, clock, 0);
}
//by marshmellow
//print 64 bit EM410x ID in multiple formats
void printEM410x(uint32_t hi, uint64_t id) {
if (!id && !hi) return;
PrintAndLogEx(SUCCESS, "EM410x%s pattern found", (hi) ? " XL" : "");
uint64_t n = 1;
uint64_t id2lo = 0;
uint8_t m, i;
for (m = 5; m > 0; m--) {
for (i = 0; i < 8; i++) {
id2lo = (id2lo << 1LL) | ((id & (n << (i + ((m - 1) * 8)))) >> (i + ((m - 1) * 8)));
}
}
if (hi) {
//output 88 bit em id
PrintAndLogEx(NORMAL, "\nEM TAG ID : "_YELLOW_("%06X%016" PRIX64), hi, id);
} else {
//output 40 bit em id
PrintAndLogEx(NORMAL, "\nEM TAG ID : "_YELLOW_("%010" PRIX64), id);
PrintAndLogEx(NORMAL, "\nPossible de-scramble patterns\n");
PrintAndLogEx(NORMAL, "Unique TAG ID : %010" PRIX64, id2lo);
PrintAndLogEx(NORMAL, "HoneyWell IdentKey {");
PrintAndLogEx(NORMAL, "DEZ 8 : %08" PRIu64, id & 0xFFFFFF);
PrintAndLogEx(NORMAL, "DEZ 10 : %010" PRIu64, id & 0xFFFFFFFF);
PrintAndLogEx(NORMAL, "DEZ 5.5 : %05" PRIu64 ".%05" PRIu64, (id >> 16LL) & 0xFFFF, (id & 0xFFFF));
PrintAndLogEx(NORMAL, "DEZ 3.5A : %03" PRIu64 ".%05" PRIu64, (id >> 32ll), (id & 0xFFFF));
PrintAndLogEx(NORMAL, "DEZ 3.5B : %03" PRIu64 ".%05" PRIu64, (id & 0xFF000000) >> 24, (id & 0xFFFF));
PrintAndLogEx(NORMAL, "DEZ 3.5C : %03" PRIu64 ".%05" PRIu64, (id & 0xFF0000) >> 16, (id & 0xFFFF));
PrintAndLogEx(NORMAL, "DEZ 14/IK2 : %014" PRIu64, id);
PrintAndLogEx(NORMAL, "DEZ 15/IK3 : %015" PRIu64, id2lo);
PrintAndLogEx(NORMAL, "DEZ 20/ZK : %02" PRIu64 "%02" PRIu64 "%02" PRIu64 "%02" PRIu64 "%02" PRIu64 "%02" PRIu64 "%02" PRIu64 "%02" PRIu64 "%02" PRIu64 "%02" PRIu64,
(id2lo & 0xf000000000) >> 36,
(id2lo & 0x0f00000000) >> 32,
(id2lo & 0x00f0000000) >> 28,
(id2lo & 0x000f000000) >> 24,
(id2lo & 0x0000f00000) >> 20,
(id2lo & 0x00000f0000) >> 16,
(id2lo & 0x000000f000) >> 12,
(id2lo & 0x0000000f00) >> 8,
(id2lo & 0x00000000f0) >> 4,
(id2lo & 0x000000000f)
);
uint64_t paxton = (((id >> 32) << 24) | (id & 0xffffff)) + 0x143e00;
PrintAndLogEx(NORMAL, "}\nOther : %05" PRIu64 "_%03" PRIu64 "_%08" PRIu64, (id & 0xFFFF), ((id >> 16LL) & 0xFF), (id & 0xFFFFFF));
PrintAndLogEx(NORMAL, "Pattern Paxton : %" PRIu64 " [0x%" PRIX64 "]", paxton, paxton);
uint32_t p1id = (id & 0xFFFFFF);
uint8_t arr[32] = {0x00};
int j = 23;
for (int k = 0 ; k < 24; ++k, --j) {
arr[k] = (p1id >> k) & 1;
}
uint32_t p1 = 0;
p1 |= arr[23] << 21;
p1 |= arr[22] << 23;
p1 |= arr[21] << 20;
p1 |= arr[20] << 22;
p1 |= arr[19] << 18;
p1 |= arr[18] << 16;
p1 |= arr[17] << 19;
p1 |= arr[16] << 17;
p1 |= arr[15] << 13;
p1 |= arr[14] << 15;
p1 |= arr[13] << 12;
p1 |= arr[12] << 14;
p1 |= arr[11] << 6;
p1 |= arr[10] << 2;
p1 |= arr[9] << 7;
p1 |= arr[8] << 1;
p1 |= arr[7] << 0;
p1 |= arr[6] << 8;
p1 |= arr[5] << 11;
p1 |= arr[4] << 3;
p1 |= arr[3] << 10;
p1 |= arr[2] << 4;
p1 |= arr[1] << 5;
p1 |= arr[0] << 9;
PrintAndLogEx(NORMAL, "Pattern 1 : %d [0x%X]", p1, p1);
uint16_t sebury1 = id & 0xFFFF;
uint8_t sebury2 = (id >> 16) & 0x7F;
uint32_t sebury3 = id & 0x7FFFFF;
PrintAndLogEx(NORMAL, "Pattern Sebury : %d %d %d [0x%X 0x%X 0x%X]", sebury1, sebury2, sebury3, sebury1, sebury2, sebury3);
}
}
/* Read the ID of an EM410x tag.
* Format:
* 1111 1111 1 <-- standard non-repeatable header
* XXXX [row parity bit] <-- 10 rows of 5 bits for our 40 bit tag ID
* ....
* CCCC <-- each bit here is parity for the 10 bits above in corresponding column
* 0 <-- stop bit, end of tag
*/
int AskEm410xDecode(bool verbose, uint32_t *hi, uint64_t *lo) {
size_t idx = 0;
uint8_t bits[512] = {0};
size_t size = sizeof(bits);
if (!getDemodBuff(bits, &size)) {
PrintAndLogEx(DEBUG, "DEBUG: Error - Em410x problem during copy from ASK demod");
return PM3_ESOFT;
}
int ans = Em410xDecode(bits, &size, &idx, hi, lo);
if (ans < 0) {
if (ans == -2)
PrintAndLogEx(DEBUG, "DEBUG: Error - Em410x not enough samples after demod");
else if (ans == -4)
PrintAndLogEx(DEBUG, "DEBUG: Error - Em410x preamble not found");
else if (ans == -5)
PrintAndLogEx(DEBUG, "DEBUG: Error - Em410x Size not correct: %zu", size);
else if (ans == -6)
PrintAndLogEx(DEBUG, "DEBUG: Error - Em410x parity failed");
return PM3_ESOFT;
}
if (!lo && !hi) {
PrintAndLogEx(DEBUG, "DEBUG: Error - Em410x decoded to all zeros");
return PM3_ESOFT;
}
//set GraphBuffer for clone or sim command
setDemodBuff(DemodBuffer, (size == 40) ? 64 : 128, idx + 1);
setClockGrid(g_DemodClock, g_DemodStartIdx + ((idx + 1)*g_DemodClock));
PrintAndLogEx(DEBUG, "DEBUG: Em410x idx: %zu, Len: %zu, Printing Demod Buffer:", idx, size);
if (g_debugMode)
printDemodBuff();
if (verbose)
printEM410x(*hi, *lo);
return PM3_SUCCESS;
}
int AskEm410xDemod(int clk, int invert, int maxErr, size_t maxLen, bool amplify, uint32_t *hi, uint64_t *lo, bool verbose) {
bool st = true;
// em410x simulation etc uses 0/1 as signal data. This must be converted in order to demod it back again
if (isGraphBitstream()) {
convertGraphFromBitstream();
}
if (ASKDemod_ext(clk, invert, maxErr, maxLen, amplify, false, false, 1, &st) != PM3_SUCCESS)
return PM3_ESOFT;
return AskEm410xDecode(verbose, hi, lo);
}
// this read loops on device side.
// uses the demod in lfops.c
static int CmdEM410xWatch(const char *Cmd) {
uint8_t c = tolower(param_getchar(Cmd, 0));
if (c == 'h') return usage_lf_em410x_watch();
PrintAndLogEx(SUCCESS, "Watching for EM410x cards - place tag on antenna");
PrintAndLogEx(INFO, "Press pm3-button to stop reading cards");
clearCommandBuffer();
SendCommandNG(CMD_LF_EM410X_WATCH, NULL, 0);
PacketResponseNG resp;
WaitForResponse(CMD_LF_EM410X_WATCH, &resp);
PrintAndLogEx(INFO, "Done");
return resp.status;
}
//by marshmellow
//takes 3 arguments - clock, invert and maxErr as integers
//attempts to demodulate ask while decoding manchester
//prints binary found and saves in graphbuffer for further commands
int demodEM410x(bool verbose) {
(void) verbose; // unused so far
uint32_t hi = 0;
uint64_t lo = 0;
return AskEm410xDemod(0, 0, 100, 0, false, &hi, &lo, true);
}
static int CmdEM410xDemod(const char *Cmd) {
char cmdp = tolower(param_getchar(Cmd, 0));
if (strlen(Cmd) > 10 || cmdp == 'h') return usage_lf_em410x_demod();
uint32_t hi = 0;
uint64_t lo = 0;
int clk = 0;
int invert = 0;
int maxErr = 100;
size_t maxLen = 0;
char amp = tolower(param_getchar(Cmd, 0));
sscanf(Cmd, "%i %i %i %zu %c", &clk, &invert, &maxErr, &maxLen, &amp);
bool amplify = amp == 'a';
if (AskEm410xDemod(clk, invert, maxErr, maxLen, amplify, &hi, &lo, true) != PM3_SUCCESS)
return PM3_ESOFT;
g_em410xid = lo;
return PM3_SUCCESS;
}
// this read is the "normal" read, which download lf signal and tries to demod here.
static int CmdEM410xRead(const char *Cmd) {
char cmdp = tolower(param_getchar(Cmd, 0));
if (strlen(Cmd) > 10 || cmdp == 'h') return usage_lf_em410x_demod();
uint32_t hi = 0;
uint64_t lo = 0;
int clk = 0;
int invert = 0;
int maxErr = 100;
size_t maxLen = 0;
char amp = tolower(param_getchar(Cmd, 0));
sscanf(Cmd, "%i %i %i %zu %c", &clk, &invert, &maxErr, &maxLen, &amp);
bool amplify = amp == 'a';
lf_read(false, 12288);
return AskEm410xDemod(clk, invert, maxErr, maxLen, amplify, &hi, &lo, true);
}
// emulate an EM410X tag
static int CmdEM410xSim(const char *Cmd) {
char cmdp = tolower(param_getchar(Cmd, 0));
if (cmdp == 'h') return usage_lf_em410x_sim();
uint8_t uid[5] = {0x00};
/* clock is 64 in EM410x tags */
uint8_t clk = 64;
if (param_gethex(Cmd, 0, uid, 10)) {
PrintAndLogEx(FAILED, "UID must include 10 HEX symbols");
return PM3_EINVARG;
}
param_getdec(Cmd, 1, &clk);
PrintAndLogEx(SUCCESS, "Starting simulating UID "_YELLOW_("%02X%02X%02X%02X%02X")" clock: "_YELLOW_("%d"), uid[0], uid[1], uid[2], uid[3], uid[4], clk);
PrintAndLogEx(SUCCESS, "Press pm3-button to abort simulation");
ConstructEM410xEmulGraph(Cmd, clk);
CmdLFSim("0"); //240 start_gap.
return PM3_SUCCESS;
}
static int CmdEM410xBrute(const char *Cmd) {
char filename[FILE_PATH_SIZE] = {0};
FILE *f = NULL;
char buf[11];
uint32_t uidcnt = 0;
uint8_t stUidBlock = 20;
uint8_t *uidBlock = NULL, *p = NULL;
uint8_t uid[5] = {0x00};
/* clock is 64 in EM410x tags */
uint8_t clock1 = 64;
/* default pause time: 1 second */
uint32_t delay = 1000;
char cmdp = tolower(param_getchar(Cmd, 0));
if (cmdp == 'h') return usage_lf_em410x_brute();
cmdp = tolower(param_getchar(Cmd, 1));
if (cmdp == 'd') {
delay = param_get32ex(Cmd, 2, 1000, 10);
param_getdec(Cmd, 4, &clock1);
} else if (cmdp == 'c') {
param_getdec(Cmd, 2, &clock1);
delay = param_get32ex(Cmd, 4, 1000, 10);
}
int filelen = param_getstr(Cmd, 0, filename, FILE_PATH_SIZE);
if (filelen == 0) {
PrintAndLogEx(ERR, "Error: Please specify a filename");
return PM3_EINVARG;
}
if ((f = fopen(filename, "r")) == NULL) {
PrintAndLogEx(ERR, "Error: Could not open UIDs file ["_YELLOW_("%s")"]", filename);
return PM3_EFILE;
}
uidBlock = calloc(stUidBlock, 5);
if (uidBlock == NULL) {
fclose(f);
return PM3_ESOFT;
}
while (fgets(buf, sizeof(buf), f)) {
if (strlen(buf) < 10 || buf[9] == '\n') continue;
while (fgetc(f) != '\n' && !feof(f)); //goto next line
//The line start with # is comment, skip
if (buf[0] == '#') continue;
if (param_gethex(buf, 0, uid, 10)) {
PrintAndLogEx(FAILED, "UIDs must include 10 HEX symbols");
free(uidBlock);
fclose(f);
return PM3_ESOFT;
}
buf[10] = 0;
if (stUidBlock - uidcnt < 2) {
p = realloc(uidBlock, 5 * (stUidBlock += 10));
if (!p) {
PrintAndLogEx(WARNING, "Cannot allocate memory for UIDs");
free(uidBlock);
fclose(f);
return PM3_ESOFT;
}
uidBlock = p;
}
memset(uidBlock + 5 * uidcnt, 0, 5);
num_to_bytes(strtoll(buf, NULL, 16), 5, uidBlock + 5 * uidcnt);
uidcnt++;
memset(buf, 0, sizeof(buf));
}
fclose(f);
if (uidcnt == 0) {
PrintAndLogEx(FAILED, "No UIDs found in file");
free(uidBlock);
return PM3_ESOFT;
}
PrintAndLogEx(SUCCESS, "Loaded "_YELLOW_("%d")" UIDs from "_YELLOW_("%s")", pause delay:"_YELLOW_("%d")" ms", uidcnt, filename, delay);
// loop
for (uint32_t c = 0; c < uidcnt; ++c) {
char testuid[11];
testuid[10] = 0;
if (kbd_enter_pressed()) {
PrintAndLogEx(WARNING, "\nAborted via keyboard!\n");
free(uidBlock);
return PM3_EOPABORTED;
}
sprintf(testuid, "%010" PRIX64, bytes_to_num(uidBlock + 5 * c, 5));
PrintAndLogEx(NORMAL, "Bruteforce %d / %d: simulating UID %s, clock %d", c + 1, uidcnt, testuid, clock1);
ConstructEM410xEmulGraph(testuid, clock1);
CmdLFSim("0"); //240 start_gap.
msleep(delay);
}
free(uidBlock);
return PM3_SUCCESS;
}
//currently only supports manchester modulations
static int CmdEM410xWatchnSpoof(const char *Cmd) {
char cmdp = tolower(param_getchar(Cmd, 0));
if (cmdp == 'h') return usage_lf_em410x_ws();
// loops if the captured ID was in XL-format.
CmdEM410xWatch(Cmd);
PrintAndLogEx(SUCCESS, "# Replaying captured ID: "_YELLOW_("%010" PRIx64), g_em410xid);
CmdLFaskSim("");
return PM3_SUCCESS;
}
static int CmdEM410xClone(const char *Cmd) {
char cmdp = tolower(param_getchar(Cmd, 0));
if (cmdp == 0x00 || cmdp == 'h') return usage_lf_em410x_clone();
uint64_t id = param_get64ex(Cmd, 0, -1, 16);
uint8_t card = param_get8ex(Cmd, 1, 0xFF, 10);
uint8_t clock1 = param_get8ex(Cmd, 2, 0, 10);
// Check ID
if (id == 0xFFFFFFFFFFFFFFFF) {
PrintAndLogEx(ERR, "error, ID is required\n");
usage_lf_em410x_clone();
return PM3_EINVARG;
}
if (id >= 0x10000000000) {
PrintAndLogEx(ERR, "error, given EM410x ID is longer than 40 bits\n");
usage_lf_em410x_clone();
return PM3_EINVARG;
}
// Check Card
if (card > 1) {
PrintAndLogEx(FAILED, "error, bad card type selected\n");
usage_lf_em410x_clone();
return PM3_EINVARG;
}
// Check Clock
if (clock1 == 0)
clock1 = 64;
// Allowed clock rates: 16, 32, 40 and 64
if ((clock1 != 16) && (clock1 != 32) && (clock1 != 64) && (clock1 != 40)) {
PrintAndLogEx(FAILED, "error, clock rate" _RED_("%d")" not valid", clock1);
PrintAndLogEx(INFO, "supported clock rates: " _YELLOW_("16, 32, 40, 60") "\n");
usage_lf_em410x_clone();
return PM3_EINVARG;
}
PrintAndLogEx(SUCCESS, "Writing " _YELLOW_("%s") " tag with UID 0x%010" PRIx64 " (clock rate: %d)", (card == 1) ? "T55x7" : "Q5/T5555", id, clock1);
// NOTE: We really should pass the clock in as a separate argument, but to
// provide for backwards-compatibility for older firmware, and to avoid
// having to add another argument to CMD_LF_EM410X_WRITE, we just store
// the clock rate in bits 8-15 of the card value
struct {
uint8_t card;
uint8_t clock;
uint32_t high;
uint32_t low;
} PACKED params;
params.card = card;
params.clock = clock1;
params.high = (uint32_t)(id >> 32);
params.low = (uint32_t)id;
clearCommandBuffer();
SendCommandNG(CMD_LF_EM410X_WRITE, (uint8_t *)&params, sizeof(params));
PacketResponseNG resp;
WaitForResponse(CMD_LF_EM410X_WRITE, &resp);
switch (resp.status) {
case PM3_SUCCESS: {
PrintAndLogEx(SUCCESS, "Done");
PrintAndLogEx(HINT, "Hint: try " _YELLOW_("`lf em 410x_read`") " to verify");
break;
}
default: {
PrintAndLogEx(WARNING, "Something went wrong");
break;
}
}
return resp.status;
}
//**************** Start of EM4x50 Code ************************
// even parity COLUMN
static bool EM_ColParityTest(uint8_t *bs, size_t size, uint8_t rows, uint8_t cols, uint8_t pType) {
if (rows * cols > size) return false;
uint8_t colP = 0;
for (uint8_t c = 0; c < cols - 1; c++) {
for (uint8_t r = 0; r < rows; r++) {
colP ^= bs[(r * cols) + c];
}
if (colP != pType) return false;
colP = 0;
}
return true;
}
#define EM_PREAMBLE_LEN 6
// download samples from device and copy to Graphbuffer
static bool downloadSamplesEM(void) {
// 8 bit preamble + 32 bit word response (max clock (128) * 40bits = 5120 samples)
uint8_t got[5500];
if (!GetFromDevice(BIG_BUF, got, sizeof(got), 0, NULL, 0, NULL, 2500, false)) {
PrintAndLogEx(WARNING, "(downloadSamplesEM) command execution time out");
return false;
}
setGraphBuf(got, sizeof(got));
// set signal properties low/high/mean/amplitude and is_noise detection
computeSignalProperties(got, sizeof(got));
RepaintGraphWindow();
if (getSignalProperties()->isnoise) {
PrintAndLogEx(DEBUG, "No tag found - signal looks like noise");
return false;
}
return true;
}
// em_demod
static int doPreambleSearch(size_t *startIdx) {
// sanity check
if (DemodBufferLen < EM_PREAMBLE_LEN) {
PrintAndLogEx(DEBUG, "DEBUG: Error - EM4305 demodbuffer too small");
return PM3_ESOFT;
}
// set size to 9 to only test first 3 positions for the preamble
// do not set it too long else an error preamble followed by 010 could be seen as success.
size_t size = (9 > DemodBufferLen) ? DemodBufferLen : 9;
*startIdx = 0;
// skip first two 0 bits as they might have been missed in the demod
uint8_t preamble[EM_PREAMBLE_LEN] = {0, 0, 1, 0, 1, 0};
if (!preambleSearchEx(DemodBuffer, preamble, EM_PREAMBLE_LEN, &size, startIdx, true)) {
uint8_t errpreamble[EM_PREAMBLE_LEN] = {0, 0, 0, 0, 0, 1};
if (!preambleSearchEx(DemodBuffer, errpreamble, EM_PREAMBLE_LEN, &size, startIdx, true)) {
PrintAndLogEx(DEBUG, "DEBUG: Error - EM4305 preamble not found :: %zu", *startIdx);
return PM3_ESOFT;
}
return PM3_EFAILED; // Error preamble found
}
return PM3_SUCCESS;
}
static bool detectFSK(void) {
// detect fsk clock
if (GetFskClock("", false) == 0) {
PrintAndLogEx(DEBUG, "DEBUG: Error - EM: FSK clock failed");
return false;
}
// demod
int ans = FSKrawDemod(0, 0, 0, 0, false);
if (ans != PM3_SUCCESS) {
PrintAndLogEx(DEBUG, "DEBUG: Error - EM: FSK Demod failed");
return false;
}
return true;
}
// PSK clocks should be easy to detect ( but difficult to demod a non-repeating pattern... )
static bool detectPSK(void) {
int ans = GetPskClock("", false);
if (ans <= 0) {
PrintAndLogEx(DEBUG, "DEBUG: Error - EM: PSK clock failed");
return false;
}
//demod
//try psk1 -- 0 0 6 (six errors?!?)
ans = PSKDemod(0, 0, 6, false);
if (ans != PM3_SUCCESS) {
PrintAndLogEx(DEBUG, "DEBUG: Error - EM: PSK1 Demod failed");
//try psk1 inverted
ans = PSKDemod(0, 1, 6, false);
if (ans != PM3_SUCCESS) {
PrintAndLogEx(DEBUG, "DEBUG: Error - EM: PSK1 inverted Demod failed");
return false;
}
}
// either PSK1 or PSK1 inverted is ok from here.
// lets check PSK2 later.
return true;
}
// try manchester - NOTE: ST only applies to T55x7 tags.
static bool detectASK_MAN(void) {
bool stcheck = false;
if (ASKDemod_ext(0, 0, 50, 0, false, false, false, 1, &stcheck) != PM3_SUCCESS) {
PrintAndLogEx(DEBUG, "DEBUG: Error - EM: ASK/Manchester Demod failed");
return false;
}
return true;
}
static bool detectASK_BI(void) {
int ans = ASKbiphaseDemod(0, 0, 1, 50, false);
if (ans != PM3_SUCCESS) {
PrintAndLogEx(DEBUG, "DEBUG: Error - EM: ASK/biphase normal demod failed");
ans = ASKbiphaseDemod(0, 1, 1, 50, false);
if (ans != PM3_SUCCESS) {
PrintAndLogEx(DEBUG, "DEBUG: Error - EM: ASK/biphase inverted demod failed");
return false;
}
}
return true;
}
static bool detectNRZ(void) {
int ans = NRZrawDemod(0, 0, 1, false);
if (ans != PM3_SUCCESS) {
PrintAndLogEx(DEBUG, "DEBUG: Error - EM: NRZ normal demod failed");
ans = NRZrawDemod(0, 1, 1, false);
if (ans != PM3_SUCCESS) {
PrintAndLogEx(DEBUG, "DEBUG: Error - EM: NRZ inverted demod failed");
return false;
}
}
return true;
}
// param: idx - start index in demoded data.
static int setDemodBufferEM(uint32_t *word, size_t idx) {
//test for even parity bits.
uint8_t parity[45] = {0};
memcpy(parity, DemodBuffer, 45);
if (!EM_ColParityTest(DemodBuffer + idx + EM_PREAMBLE_LEN, 45, 5, 9, 0)) {
PrintAndLogEx(DEBUG, "DEBUG: Error - End Parity check failed");
return PM3_ESOFT;
}
// test for even parity bits and remove them. (leave out the end row of parities so 36 bits)
if (!removeParity(DemodBuffer, idx + EM_PREAMBLE_LEN, 9, 0, 36)) {
PrintAndLogEx(DEBUG, "DEBUG: Error - EM, failed removing parity");
return PM3_ESOFT;
}
setDemodBuff(DemodBuffer, 32, 0);
*word = bytebits_to_byteLSBF(DemodBuffer, 32);
return PM3_SUCCESS;
}
// FSK, PSK, ASK/MANCHESTER, ASK/BIPHASE, ASK/DIPHASE, NRZ
// should cover 90% of known used configs
// the rest will need to be manually demoded for now...
static int demodEM4x05resp(uint32_t *word, bool onlyPreamble) {
size_t idx = 0;
*word = 0;
bool found_err = false;
int res = PM3_SUCCESS;
do {
if (detectASK_MAN()) {
res = doPreambleSearch(&idx);
if (res == PM3_SUCCESS)
break;
if (res == PM3_EFAILED)
// go on, maybe it's false positive and another modulation will work
found_err = true;
}
if (detectASK_BI()) {
res = doPreambleSearch(&idx);
if (res == PM3_SUCCESS)
break;
if (res == PM3_EFAILED)
found_err = true;
}
if (detectNRZ()) {
res = doPreambleSearch(&idx);
if (res == PM3_SUCCESS)
break;
if (res == PM3_EFAILED)
found_err = true;
}
if (detectFSK()) {
res = doPreambleSearch(&idx);
if (res == PM3_SUCCESS)
break;
if (res == PM3_EFAILED)
found_err = true;
}
if (detectPSK()) {
res = doPreambleSearch(&idx);
if (res == PM3_SUCCESS)
break;
if (res == PM3_EFAILED)
found_err = true;
psk1TOpsk2(DemodBuffer, DemodBufferLen);
res = doPreambleSearch(&idx);
if (res == PM3_SUCCESS)
break;
if (res == PM3_EFAILED)
found_err = true;
}
if (found_err)
return PM3_EFAILED;
return PM3_ESOFT;
} while (0);
if (onlyPreamble)
return PM3_SUCCESS;
res = setDemodBufferEM(word, idx);
if (res == PM3_SUCCESS)
return res;
if (found_err)
return PM3_EFAILED;
return res;
}
//////////////// 4205 / 4305 commands
#include "util_posix.h" // msclock
int EM4x05ReadWord_ext(uint8_t addr, uint32_t pwd, bool usePwd, uint32_t *word) {
struct {
uint32_t password;
uint8_t address;
uint8_t usepwd;
} PACKED payload;
payload.password = pwd;
payload.address = addr;
payload.usepwd = usePwd;
clearCommandBuffer();
SendCommandNG(CMD_LF_EM4X_READWORD, (uint8_t *)&payload, sizeof(payload));
PacketResponseNG resp;
if (!WaitForResponseTimeout(CMD_LF_EM4X_READWORD, &resp, 10000)) {
PrintAndLogEx(WARNING, "(EM4x05ReadWord_ext) timeout while waiting for reply.");
return PM3_ETIMEOUT;
}
if (downloadSamplesEM() == false) {
return PM3_ESOFT;
}
return demodEM4x05resp(word, false);
}
static int CmdEM4x05Demod(const char *Cmd) {
// uint8_t ctmp = tolower(param_getchar(Cmd, 0));
// if (ctmp == 'h') return usage_lf_em4x05_demod();
uint32_t dummy = 0;
return demodEM4x05resp(&dummy, false);
}
static int CmdEM4x05Dump(const char *Cmd) {
uint8_t addr = 0;
uint32_t pwd = 0;
bool usePwd = false;
bool needReadPwd = true;
uint8_t cmdp = 0;
uint8_t bytes[4] = {0};
uint32_t data[16];
char preferredName[FILE_PATH_SIZE] = {0};
char optchk[10];
while (param_getchar(Cmd, cmdp) != 0x00) {
switch (tolower(param_getchar(Cmd, cmdp))) {
case 'h':
return usage_lf_em4x05_dump();
break;
case 'f': // since f could match in password, lets confirm it is 1 character only for an option
param_getstr(Cmd, cmdp, optchk, sizeof(optchk));
if (strlen(optchk) == 1) { // Have a single character f so filename no password
param_getstr(Cmd, cmdp + 1, preferredName, FILE_PATH_SIZE);
cmdp += 2;
break;
} // if not a single 'f' dont break and flow onto default as should be password
default : // for backwards-compatibility options should be > 'f' else assume its the hex password`
// for now use default input of 1 as invalid (unlikely 1 will be a valid password...)
pwd = param_get32ex(Cmd, cmdp, 1, 16);
if (pwd != 1)
usePwd = true;
cmdp++;
};
}
int success = PM3_SUCCESS;
int status, status14, status15;
uint32_t lock_bits = 0x00; // no blocks locked
bool gotLockBits = false;
bool lockInPW2 = false;
uint32_t word = 0;
const char *info[] = {"Info/User", "UID", "Password", "User", "Config", "User", "User", "User", "User", "User", "User", "User", "User", "User", "Lock", "Lock"};
if (usePwd) {
// Test first if a password is required
status = EM4x05ReadWord_ext(14, pwd, false, &word);
if (status == PM3_SUCCESS) {
PrintAndLogEx(INFO, "Note that password doesn't seem to be needed");
needReadPwd = false;
}
}
PrintAndLogEx(NORMAL, "Addr | data | ascii |lck| info");
PrintAndLogEx(NORMAL, "-----+----------+-------+---+-----");
// To flag any blocks locked we need to read blocks 14 and 15 first
// dont swap endin until we get block lock flags.
status14 = EM4x05ReadWord_ext(14, pwd, usePwd, &word);
if (status14 == PM3_SUCCESS) {
if (!usePwd)
needReadPwd = false;
if ((word & 0x00008000) != 0x00) {
lock_bits = word;
gotLockBits = true;
}
data[14] = word;
} else {
success = PM3_ESOFT; // If any error ensure fail is set so not to save invalid data
}
status15 = EM4x05ReadWord_ext(15, pwd, usePwd, &word);
if (status15 == PM3_SUCCESS) {
if ((word & 0x00008000) != 0x00) { // assume block 15 is the current lock block
lock_bits = word;
gotLockBits = true;
lockInPW2 = true;
}
data[15] = word;
} else {
success = PM3_ESOFT; // If any error ensure fail is set so not to save invalid data
}
uint32_t lockbit;
// Now read blocks 0 - 13 as we have 14 and 15
for (; addr < 14; addr++) {
lockbit = (lock_bits >> addr) & 1;
if (addr == 2) {
if (usePwd) {
if ((needReadPwd) && (success != PM3_ESOFT)) {
data[addr] = BSWAP_32(pwd);
num_to_bytes(pwd, 4, bytes);
PrintAndLogEx(NORMAL, " %02u | %08X | %s | %s | %s", addr, pwd, sprint_ascii(bytes, 4), gotLockBits ? (lockbit ? _RED_("x") : " ") : _YELLOW_("?"), info[addr]);
} else {
// The pwd is not needed for Login so we're not sure what's the actual content of that block
PrintAndLogEx(NORMAL, " %02u | | | | %-10s " _YELLOW_("write only"), addr, info[addr]);
}
} else {
data[addr] = 0x00; // Unknown password, but not used to set to zeros
PrintAndLogEx(NORMAL, " %02u | | | | %-10s " _YELLOW_("write only"), addr, info[addr]);
}
} else {
// success &= EM4x05ReadWord_ext(addr, pwd, usePwd, &word);
status = EM4x05ReadWord_ext(addr, pwd, usePwd, &word); // Get status for single read
if (status != PM3_SUCCESS)
success = PM3_ESOFT; // If any error ensure fail is set so not to save invalid data
data[addr] = BSWAP_32(word);
if (status == PM3_SUCCESS) {
num_to_bytes(word, 4, bytes);
PrintAndLogEx(NORMAL, " %02u | %08X | %s | %s | %s", addr, word, sprint_ascii(bytes, 4), gotLockBits ? (lockbit ? _RED_("x") : " ") : _YELLOW_("?"), info[addr]);
} else
PrintAndLogEx(NORMAL, " %02u | | | | %-10s %s", addr, info[addr], status == PM3_EFAILED ? _RED_("read denied") : _RED_("read failed"));
}
}
// Print blocks 14 and 15
// Both lock bits are protected with bit idx 14 (special case)
addr = 14;
if (status14 == PM3_SUCCESS) {
lockbit = (lock_bits >> addr) & 1;
PrintAndLogEx(NORMAL, " %02u | %08X | %s | %s | %-10s %s", addr, data[addr], sprint_ascii(bytes, 4), gotLockBits ? (lockbit ? _RED_("x") : " ") : _YELLOW_("?"), info[addr], lockInPW2 ? "" : _GREEN_("active"));
} else {
PrintAndLogEx(NORMAL, " %02u | | | | %-10s %s", addr, info[addr], status14 == PM3_EFAILED ? _RED_("read denied") : _RED_("read failed"));
}
addr = 15;
if (status15 == PM3_SUCCESS) {
lockbit = (lock_bits >> 14) & 1; // beware lock bit of word15 is pr14
PrintAndLogEx(NORMAL, " %02u | %08X | %s | %s | %-10s %s", addr, data[addr], sprint_ascii(bytes, 4), gotLockBits ? (lockbit ? _RED_("x") : " ") : _YELLOW_("?"), info[addr], lockInPW2 ? _GREEN_("active") : "");
} else {
PrintAndLogEx(NORMAL, " %02u | | | | %-10s %s", addr, info[addr], status15 == PM3_EFAILED ? _RED_("read denied") : _RED_("read failed"));
}
// Update endian for files
data[14] = BSWAP_32(data[14]);
data[15] = BSWAP_32(data[15]);
if (success == PM3_SUCCESS) { // all ok save dump to file
// saveFileEML will add .eml extension to filename
// saveFile (binary) passes in the .bin extension.
if (strcmp(preferredName, "") == 0) // Set default filename, if not set by user
sprintf(preferredName, "lf-4x05-%08X-dump", BSWAP_32(data[1]));
saveFileEML(preferredName, (uint8_t *)data, 16 * sizeof(uint32_t), sizeof(uint32_t));
saveFile(preferredName, ".bin", data, sizeof(data));
}
return success;
}
static int CmdEM4x05Read(const char *Cmd) {
uint8_t addr;
uint32_t pwd;
bool usePwd = false;
uint8_t ctmp = tolower(param_getchar(Cmd, 0));
if (strlen(Cmd) == 0 || ctmp == 'h') return usage_lf_em4x05_read();
addr = param_get8ex(Cmd, 0, 50, 10);
pwd = param_get32ex(Cmd, 1, 0xFFFFFFFF, 16);
if (addr > 15) {
PrintAndLogEx(WARNING, "Address must be between 0 and 15");
return PM3_ESOFT;
}
if (pwd == 0xFFFFFFFF) {
PrintAndLogEx(INFO, "Reading address %02u", addr);
} else {
usePwd = true;
PrintAndLogEx(INFO, "Reading address %02u using password %08X", addr, pwd);
}
uint32_t word = 0;
int status = EM4x05ReadWord_ext(addr, pwd, usePwd, &word);
if (status == PM3_SUCCESS)
PrintAndLogEx(SUCCESS, "Address %02d | %08X - %s", addr, word, (addr > 13) ? "Lock" : "");
else if (status == PM3_EFAILED)
PrintAndLogEx(ERR, "Tag denied Read operation");
else
PrintAndLogEx(WARNING, "No answer from tag");
return status;
}
static int CmdEM4x05Write(const char *Cmd) {
uint8_t ctmp = tolower(param_getchar(Cmd, 0));
if (strlen(Cmd) == 0 || ctmp == 'h') return usage_lf_em4x05_write();
bool usePwd = false;
uint8_t addr;
uint32_t data, pwd;
addr = param_get8ex(Cmd, 0, 50, 10);
data = param_get32ex(Cmd, 1, 0, 16);
pwd = param_get32ex(Cmd, 2, 0xFFFFFFFF, 16);
bool protectOperation = addr == 99; // will do better with cliparser...
if ((addr > 13) && (!protectOperation)) {
PrintAndLogEx(WARNING, "Address must be between 0 and 13");
return PM3_EINVARG;
}
if (pwd == 0xFFFFFFFF) {
if (protectOperation)
PrintAndLogEx(INFO, "Writing protection words data %08X", data);
else
PrintAndLogEx(INFO, "Writing address %d data %08X", addr, data);
} else {
usePwd = true;
if (protectOperation)
PrintAndLogEx(INFO, "Writing protection words data %08X using password %08X", data, pwd);
else
PrintAndLogEx(INFO, "Writing address %d data %08X using password %08X", addr, data, pwd);
}
if (protectOperation) { // set Protect Words
struct {
uint32_t password;
uint32_t data;
uint8_t usepwd;
} PACKED payload;
payload.password = pwd;
payload.data = data;
payload.usepwd = usePwd;
clearCommandBuffer();
SendCommandNG(CMD_LF_EM4X_PROTECTWORD, (uint8_t *)&payload, sizeof(payload));
PacketResponseNG resp;
if (!WaitForResponseTimeout(CMD_LF_EM4X_PROTECTWORD, &resp, 2000)) {
PrintAndLogEx(ERR, "Error occurred, device did not respond during write operation.");
return PM3_ETIMEOUT;
}
} else {
struct {
uint32_t password;
uint32_t data;
uint8_t address;
uint8_t usepwd;
} PACKED payload;
payload.password = pwd;
payload.data = data;
payload.address = addr;
payload.usepwd = usePwd;
clearCommandBuffer();
SendCommandNG(CMD_LF_EM4X_WRITEWORD, (uint8_t *)&payload, sizeof(payload));
PacketResponseNG resp;
if (!WaitForResponseTimeout(CMD_LF_EM4X_WRITEWORD, &resp, 2000)) {
PrintAndLogEx(ERR, "Error occurred, device did not respond during write operation.");
return PM3_ETIMEOUT;
}
}
if (!downloadSamplesEM())
return PM3_ENODATA;
uint32_t dummy = 0;
int status = demodEM4x05resp(&dummy, true);
if (status == PM3_SUCCESS)
PrintAndLogEx(SUCCESS, "Success writing to tag");
else if (status == PM3_EFAILED)
PrintAndLogEx(ERR, "Tag denied %s operation", protectOperation ? "Protect" : "Write");
else
PrintAndLogEx(DEBUG, "No answer from tag");
PrintAndLogEx(HINT, "Hint: try " _YELLOW_("`lf em 4x05_read`") " to verify");
return status;
}
static int CmdEM4x05Wipe(const char *Cmd) {
uint8_t addr = 0;
uint32_t pwd = 0;
uint8_t cmdp = 0;
uint8_t chipType = 1; // em4305
uint32_t chipInfo = 0x00040072; // Chip info/User Block normal 4305 Chip Type
uint32_t chipUID = 0x614739AE; // UID normally readonly, but just in case
uint32_t blockData = 0x00000000; // UserBlock/Password (set to 0x00000000 for a wiped card1
uint32_t config = 0x0001805F; // Default config (no password)
int success = PM3_SUCCESS;
char cmdStr [100];
char optchk[10];
while (param_getchar(Cmd, cmdp) != 0x00) {
// check if cmd is a 1 byte option
param_getstr(Cmd, cmdp, optchk, sizeof(optchk));
if (strlen(optchk) == 1) { // Have a single character so option not part of password
switch (tolower(param_getchar(Cmd, cmdp))) {
case 'c': // chip type
if (param_getchar(Cmd, cmdp) != 0x00)
chipType = param_get8ex(Cmd, cmdp + 1, 0, 10);
cmdp += 2;
break;
case 'h': // return usage_lf_em4x05_wipe();
default : // Unknown or 'h' send help
return usage_lf_em4x05_wipe();
break;
};
} else { // Not a single character so assume password
pwd = param_get32ex(Cmd, cmdp, 1, 16);
cmdp++;
}
}
switch (chipType) {
case 0 : // em4205
chipInfo = 0x00040070;
config = 0x0001805F;
break;
case 1 : // em4305
chipInfo = 0x00040072;
config = 0x0001805F;
break;
default : // Type 0/Default : EM4305
chipInfo = 0x00040072;
config = 0x0001805F;
}
// block 0 : User Data or Chip Info
sprintf(cmdStr, "%d %08X %08X", 0, chipInfo, pwd);
CmdEM4x05Write(cmdStr);
// block 1 : UID - this should be read only for EM4205 and EM4305 not sure about others
sprintf(cmdStr, "%d %08X %08X", 1, chipUID, pwd);
CmdEM4x05Write(cmdStr);
// block 2 : password
sprintf(cmdStr, "%d %08X %08X", 2, blockData, pwd);
CmdEM4x05Write(cmdStr);
pwd = blockData; // Password should now have changed, so use new password
// block 3 : user data
sprintf(cmdStr, "%d %08X %08X", 3, blockData, pwd);
CmdEM4x05Write(cmdStr);
// block 4 : config
sprintf(cmdStr, "%d %08X %08X", 4, config, pwd);
CmdEM4x05Write(cmdStr);
// Remainder of user/data blocks
for (addr = 5; addr < 14; addr++) {// Clear user data blocks
sprintf(cmdStr, "%d %08X %08X", addr, blockData, pwd);
CmdEM4x05Write(cmdStr);
}
return success;
}
static void printEM4x05config(uint32_t wordData) {
uint16_t datarate = (((wordData & 0x3F) + 1) * 2);
uint8_t encoder = ((wordData >> 6) & 0xF);
char enc[14];
memset(enc, 0, sizeof(enc));
uint8_t PSKcf = (wordData >> 10) & 0x3;
char cf[10];
memset(cf, 0, sizeof(cf));
uint8_t delay = (wordData >> 12) & 0x3;
char cdelay[33];
memset(cdelay, 0, sizeof(cdelay));
uint8_t numblks = EM4x05_GET_NUM_BLOCKS(wordData);
uint8_t LWR = numblks + 5 - 1; //last word read
switch (encoder) {
case 0:
snprintf(enc, sizeof(enc), "NRZ");
break;
case 1:
snprintf(enc, sizeof(enc), "Manchester");
break;
case 2:
snprintf(enc, sizeof(enc), "Biphase");
break;
case 3:
snprintf(enc, sizeof(enc), "Miller");
break;
case 4:
snprintf(enc, sizeof(enc), "PSK1");
break;
case 5:
snprintf(enc, sizeof(enc), "PSK2");
break;
case 6:
snprintf(enc, sizeof(enc), "PSK3");
break;
case 7:
snprintf(enc, sizeof(enc), "Unknown");
break;
case 8:
snprintf(enc, sizeof(enc), "FSK1");
break;
case 9:
snprintf(enc, sizeof(enc), "FSK2");
break;
default:
snprintf(enc, sizeof(enc), "Unknown");
break;
}
switch (PSKcf) {
case 0:
snprintf(cf, sizeof(cf), "RF/2");
break;
case 1:
snprintf(cf, sizeof(cf), "RF/8");
break;
case 2:
snprintf(cf, sizeof(cf), "RF/4");
break;
case 3:
snprintf(cf, sizeof(cf), "unknown");
break;
}
switch (delay) {
case 0:
snprintf(cdelay, sizeof(cdelay), "no delay");
break;
case 1:
snprintf(cdelay, sizeof(cdelay), "BP/8 or 1/8th bit period delay");
break;
case 2:
snprintf(cdelay, sizeof(cdelay), "BP/4 or 1/4th bit period delay");
break;
case 3:
snprintf(cdelay, sizeof(cdelay), "no delay");
break;
}
uint8_t readLogin = (wordData & EM4x05_READ_LOGIN_REQ) >> 18;
uint8_t readHKL = (wordData & EM4x05_READ_HK_LOGIN_REQ) >> 19;
uint8_t writeLogin = (wordData & EM4x05_WRITE_LOGIN_REQ) >> 20;
uint8_t writeHKL = (wordData & EM4x05_WRITE_HK_LOGIN_REQ) >> 21;
uint8_t raw = (wordData & EM4x05_READ_AFTER_WRITE) >> 22;
uint8_t disable = (wordData & EM4x05_DISABLE_ALLOWED) >> 23;
uint8_t rtf = (wordData & EM4x05_READER_TALK_FIRST) >> 24;
uint8_t pigeon = (wordData & (1 << 26)) >> 26;
PrintAndLogEx(NORMAL, "");
PrintAndLogEx(INFO, "--- " _CYAN_("Config Information") " ---------------------------");
PrintAndLogEx(INFO, "ConfigWord: %08X (Word 4)", wordData);
PrintAndLogEx(INFO, " Data Rate: %02u | "_YELLOW_("RF/%u"), wordData & 0x3F, datarate);
PrintAndLogEx(INFO, " Encoder: %u | " _YELLOW_("%s"), encoder, enc);
PrintAndLogEx(INFO, " PSK CF: %u | %s", PSKcf, cf);
PrintAndLogEx(INFO, " Delay: %u | %s", delay, cdelay);
PrintAndLogEx(INFO, " LastWordR: %02u | Address of last word for default read - meaning %u blocks are output", LWR, numblks);
PrintAndLogEx(INFO, " ReadLogin: %u | Read login is %s", readLogin, readLogin ? _YELLOW_("required") : _GREEN_("not required"));
PrintAndLogEx(INFO, " ReadHKL: %u | Read housekeeping words login is %s", readHKL, readHKL ? _YELLOW_("required") : _GREEN_("not required"));
PrintAndLogEx(INFO, "WriteLogin: %u | Write login is %s", writeLogin, writeLogin ? _YELLOW_("required") : _GREEN_("not required"));
PrintAndLogEx(INFO, " WriteHKL: %u | Write housekeeping words login is %s", writeHKL, writeHKL ? _YELLOW_("required") : _GREEN_("not Required"));
PrintAndLogEx(INFO, " R.A.W.: %u | Read after write is %s", raw, raw ? "on" : "off");
PrintAndLogEx(INFO, " Disable: %u | Disable command is %s", disable, disable ? "accepted" : "not accepted");
PrintAndLogEx(INFO, " R.T.F.: %u | Reader talk first is %s", rtf, rtf ? _YELLOW_("enabled") : "disabled");
PrintAndLogEx(INFO, " Pigeon: %u | Pigeon mode is %s", pigeon, pigeon ? _YELLOW_("enabled") : "disabled");
}
static void printEM4x05info(uint32_t block0, uint32_t serial) {
uint8_t chipType = (block0 >> 1) & 0xF;
uint8_t cap = (block0 >> 5) & 3;
uint16_t custCode = (block0 >> 9) & 0x2FF;
PrintAndLogEx(INFO, " block0: %X", block0);
PrintAndLogEx(INFO, " chiptype: %X", chipType);
PrintAndLogEx(INFO, "capacitor: %X", cap);
PrintAndLogEx(INFO, " custcode: %X", custCode);
/* bits
// 0, rfu
// 1,2,3,4 chip type
// 5,6 resonant cap
// 7,8, rfu
// 9 - 18 customer code
// 19, rfu
98765432109876543210
001000000000
// 00100000000001111000
xxx----
// 1100
// 011
// 00100000000
*/
PrintAndLogEx(INFO, "--- " _CYAN_("Tag Information") " ---------------------------");
char ctstr[50];
snprintf(ctstr, sizeof(ctstr), " Chip Type: %u | ", chipType);
switch (chipType) {
case 9:
snprintf(ctstr + strlen(ctstr), sizeof(ctstr) - strlen(ctstr), _YELLOW_("%s"), "EM4305");
break;
case 4:
snprintf(ctstr + strlen(ctstr), sizeof(ctstr) - strlen(ctstr), _YELLOW_("%s"), "EM4469");
break;
case 8:
snprintf(ctstr + strlen(ctstr), sizeof(ctstr) - strlen(ctstr), _YELLOW_("%s"), "EM4205");
break;
//add more here when known
default:
snprintf(ctstr + strlen(ctstr), sizeof(ctstr) - strlen(ctstr), _YELLOW_("%s"), "Unknown");
break;
}
PrintAndLogEx(SUCCESS, "%s", ctstr);
switch (cap) {
case 3:
PrintAndLogEx(SUCCESS, " Cap Type: %u | 330pF", cap);
break;
case 2:
PrintAndLogEx(SUCCESS, " Cap Type: %u | %spF", cap, (chipType == 2) ? "75" : "210");
break;
case 1:
PrintAndLogEx(SUCCESS, " Cap Type: %u | 250pF", cap);
break;
case 0:
PrintAndLogEx(SUCCESS, " Cap Type: %u | no resonant capacitor", cap);
break;
default:
PrintAndLogEx(SUCCESS, " Cap Type: %u | unknown", cap);
break;
}
PrintAndLogEx(SUCCESS, " Cust Code: %03u | %s", custCode, (custCode == 0x200) ? "Default" : "Unknown");
if (serial != 0)
PrintAndLogEx(SUCCESS, " Serial #: " _YELLOW_("%08X"), serial);
}
static void printEM4x05ProtectionBits(uint32_t word, uint8_t addr) {
PrintAndLogEx(NORMAL, "");
PrintAndLogEx(INFO, "--- " _CYAN_("Protection") " ---------------------------");
PrintAndLogEx(INFO, "ProtectionWord: %08X (Word %i)", word, addr);
for (uint8_t i = 0; i < 15; i++) {
PrintAndLogEx(INFO, " Word: %02u | %s", i, ((1 << i) & word) ? _RED_("write Locked") : "unlocked");
if (i == 14)
PrintAndLogEx(INFO, " Word: %02u | %s", i + 1, ((1 << i) & word) ? _RED_("write locked") : "unlocked");
}
}
//quick test for EM4x05/EM4x69 tag
bool EM4x05IsBlock0(uint32_t *word) {
return (EM4x05ReadWord_ext(0, 0, false, word) == PM3_SUCCESS);
}
static int CmdEM4x05Info(const char *Cmd) {
#define EM_SERIAL_BLOCK 1
#define EM_CONFIG_BLOCK 4
#define EM_PROT1_BLOCK 14
#define EM_PROT2_BLOCK 15
uint32_t pwd;
uint32_t word = 0, block0 = 0, serial = 0;
bool usePwd = false;
uint8_t ctmp = tolower(param_getchar(Cmd, 0));
if (ctmp == 'h') return usage_lf_em4x05_info();
// for now use default input of 1 as invalid (unlikely 1 will be a valid password...)
pwd = param_get32ex(Cmd, 0, 0xFFFFFFFF, 16);
if (pwd != 0xFFFFFFFF)
usePwd = true;
// read word 0 (chip info)
// block 0 can be read even without a password.
if (EM4x05IsBlock0(&block0) == false)
return PM3_ESOFT;
// read word 1 (serial #) doesn't need pwd
// continue if failed, .. non blocking fail.
EM4x05ReadWord_ext(EM_SERIAL_BLOCK, 0, false, &serial);
printEM4x05info(block0, serial);
// read word 4 (config block)
// needs password if one is set
if (EM4x05ReadWord_ext(EM_CONFIG_BLOCK, pwd, usePwd, &word) != PM3_SUCCESS)
return PM3_ESOFT;
printEM4x05config(word);
// read word 14 and 15 to see which is being used for the protection bits
if (EM4x05ReadWord_ext(EM_PROT1_BLOCK, pwd, usePwd, &word) != PM3_SUCCESS) {
return PM3_ESOFT;
}
if (word & 0x8000) {
printEM4x05ProtectionBits(word, EM_PROT1_BLOCK);
return PM3_SUCCESS;
} else { // if status bit says this is not the used protection word
if (EM4x05ReadWord_ext(EM_PROT2_BLOCK, pwd, usePwd, &word) != PM3_SUCCESS)
return PM3_ESOFT;
if (word & 0x8000) {
printEM4x05ProtectionBits(word, EM_PROT2_BLOCK);
return PM3_SUCCESS;
}
}
//something went wrong
return PM3_ESOFT;
}
static bool is_cancelled(void) {
if (kbd_enter_pressed()) {
PrintAndLogEx(WARNING, "\naborted via keyboard!\n");
return true;
}
return false;
}
// load a default pwd file.
static int CmdEM4x05Chk(const char *Cmd) {
CLIParserContext *ctx;
CLIParserInit(&ctx, "lf em 4x05_chk",
"This command uses a dictionary attack against EM4205/4305/4469/4569",
"lf em 4x05_chk\n"
"lf em 4x05_chk -e 0x00000022B8 -> remember to use 0x for hex\n"
"lf em 4x05_chk -f t55xx_default_pwds -> use T55xx default dictionary"
);
void *argtable[] = {
arg_param_begin,
arg_strx0("f", "file", "<*.dic>", "loads a default keys dictionary file <*.dic>"),
arg_u64_0("e", "em", "<EM4100>", "try the calculated password from some cloners based on EM4100 ID"),
arg_param_end
};
CLIExecWithReturn(ctx, Cmd, argtable, true);
int fnlen = 0;
char filename[FILE_PATH_SIZE] = {0};
CLIParamStrToBuf(arg_get_str(ctx, 1), (uint8_t *)filename, FILE_PATH_SIZE, &fnlen);
uint64_t card_id = arg_get_u64_def(ctx, 2, 0);
CLIParserFree(ctx);
if (strlen(filename) == 0) {
snprintf(filename, sizeof(filename), "t55xx_default_pwds");
}
PrintAndLogEx(NORMAL, "");
uint8_t addr = 4;
uint32_t word = 0;
bool found = false;
uint64_t t1 = msclock();
// White cloner password based on EM4100 ID
if ( card_id > 0 ) {
uint32_t pwd = lf_t55xx_white_pwdgen(card_id & 0xFFFFFFFF);
PrintAndLogEx(INFO, "testing %08"PRIX32" generated ", pwd);
int status = EM4x05ReadWord_ext(addr, pwd, true, &word);
if (status == PM3_SUCCESS) {
PrintAndLogEx(SUCCESS, "found valid password [ " _GREEN_("%08"PRIX32) " ]", pwd);
found = true;
}
}
// Loop dictionary
uint8_t *keyBlock = NULL;
if (found == false) {
PrintAndLogEx(INFO, "press " _YELLOW_("'enter'") " to cancel the command");
word = 0;
uint32_t keycount = 0;
int res = loadFileDICTIONARY_safe(filename, (void **) &keyBlock, 4, &keycount);
if (res != PM3_SUCCESS || keycount == 0 || keyBlock == NULL) {
PrintAndLogEx(WARNING, "no keys found in file");
if (keyBlock != NULL)
free(keyBlock);
return PM3_ESOFT;
}
for (uint32_t c = 0; c < keycount; ++c) {
if (!session.pm3_present) {
PrintAndLogEx(WARNING, "device offline\n");
free(keyBlock);
return PM3_ENODATA;
}
if (is_cancelled()) {
free(keyBlock);
return PM3_EOPABORTED;
}
uint32_t curr_password = bytes_to_num(keyBlock + 4 * c, 4);
PrintAndLogEx(INFO, "testing %08"PRIX32, curr_password);
int status = EM4x05ReadWord_ext(addr, curr_password, 1, &word);
if (status == PM3_SUCCESS) {
PrintAndLogEx(SUCCESS, "found valid password [ " _GREEN_("%08"PRIX32) " ]", curr_password);
found = true;
break;
}
}
}
if (found == false)
PrintAndLogEx(WARNING, "check pwd failed");
free(keyBlock);
t1 = msclock() - t1;
PrintAndLogEx(SUCCESS, "\ntime in check pwd " _YELLOW_("%.0f") " seconds\n", (float)t1 / 1000.0);
return PM3_SUCCESS;
}
static int unlock_write_protect(bool use_pwd, uint32_t pwd, uint32_t data, bool verbose) {
struct {
uint32_t password;
uint32_t data;
uint8_t usepwd;
} PACKED payload;
payload.password = pwd;
payload.data = data;
payload.usepwd = use_pwd;
clearCommandBuffer();
SendCommandNG(CMD_LF_EM4X_PROTECTWORD, (uint8_t *)&payload, sizeof(payload));
PacketResponseNG resp;
if (WaitForResponseTimeout(CMD_LF_EM4X_PROTECTWORD, &resp, 2000) == false) {
PrintAndLogEx(ERR, "Error occurred, device did not respond during write operation.");
return PM3_ETIMEOUT;
}
if (!downloadSamplesEM())
return PM3_ENODATA;
uint32_t dummy = 0;
int status = demodEM4x05resp(&dummy, true);
if (status == PM3_SUCCESS && verbose)
PrintAndLogEx(SUCCESS, "Success writing to tag");
else if (status == PM3_EFAILED)
PrintAndLogEx(ERR, "Tag denied PROTECT operation");
else
PrintAndLogEx(DEBUG, "No answer from tag");
return status;
}
static int unlock_reset(bool use_pwd, uint32_t pwd, uint32_t data, bool verbose) {
if (verbose)
PrintAndLogEx(INFO, "resetting the " _RED_("active") " lock block");
return unlock_write_protect(use_pwd, pwd, data, false);
}
static int CmdEM4x05Unlock(const char *Cmd) {
CLIParserContext *ctx;
CLIParserInit(&ctx, "lf em 4x05_unlock",
"execute tear off against EM4205/4305/4469/4569",
"lf em 4x05_unlock\n"
"lf em 4x05_unlock -s 4100 -e 4100 -> lock on and autotune at 4100us\n"
"lf em 4x05_unlock -n 10 -s 3000 -e 4400 -> scan delays 3000us -> 4400us"
);
void *argtable[] = {
arg_param_begin,
arg_int0("n", NULL, NULL, "steps to skip"),
arg_int0("s", "start", "<us>", "start scan from delay (us)"),
arg_int0("e", "end", "<us>", "end scan at delay (us)"),
arg_u64_0("p", "pwd", "", "password (0x00000000)"),
arg_lit0("v", "verbose", "verbose output"),
arg_param_end
};
CLIExecWithReturn(ctx, Cmd, argtable, true);
double n = (double)arg_get_int_def(ctx, 1, 0);
double start = (double)arg_get_int_def(ctx, 2, 2000);
double end = (double)arg_get_int_def(ctx, 3, 6000);
uint64_t inputpwd = arg_get_u64_def(ctx, 4, 0xFFFFFFFFFFFFFFFF);
bool verbose = arg_get_lit(ctx, 5);
CLIParserFree(ctx);
if ( start > end ) {
PrintAndLogEx(FAILED, "start delay can\'t be larger than end delay %.0lf vs %.0lf", start, end);
return PM3_EINVARG;
}
if (session.pm3_present == false) {
PrintAndLogEx(WARNING, "device offline\n");
return PM3_ENODATA;
}
bool use_pwd = false;
uint32_t pwd = 0;
if (inputpwd != 0xFFFFFFFFFFFFFFFF) {
use_pwd = true;
pwd = inputpwd & 0xFFFFFFFF;
}
uint32_t search_value = 0;
uint32_t write_value = 0;
//
// inital phase
//
// read word 14
uint32_t init_14 = 0;
int res = EM4x05ReadWord_ext(14, pwd, use_pwd, &init_14);
if (res != PM3_SUCCESS) {
PrintAndLogEx(FAILED, "failed to read word 14\n");
return PM3_ENODATA;
}
// read 15
uint32_t init_15 = 0;
res = EM4x05ReadWord_ext(15, pwd, use_pwd, &init_15);
if (res != PM3_SUCCESS) {
PrintAndLogEx(FAILED, "failed to read word 15\n");
return PM3_ENODATA;
}
#define ACTIVE_MASK 0x00008000
if ((init_15 & ACTIVE_MASK) == ACTIVE_MASK) {
search_value = init_15;
} else {
search_value = init_14;
}
if (search_value == ACTIVE_MASK) {
PrintAndLogEx(SUCCESS, "Tag already fully unlocked, nothing to do");
return PM3_SUCCESS;
}
bool my_auto = false;
if (n == 0) {
my_auto = true;
n = (end - start) / 2;
}
// fix at one specific delay
if (start == end) {
n = 0;
}
PrintAndLogEx(INFO, "--------------- " _CYAN_("EM4x05 tear-off : target PROTECT") " -----------------------\n");
PrintAndLogEx(INFO, "initial prot 14&15 [ " _GREEN_("%08X") ", " _GREEN_("%08X") " ]", init_14, init_15);
if (use_pwd) {
PrintAndLogEx(INFO, " target password [ " _GREEN_("%08"PRIX64) " ]", pwd);
}
if (my_auto) {
PrintAndLogEx(INFO, " automatic mode [ " _GREEN_("enabled") " ]");
}
PrintAndLogEx(INFO, " target stepping [ " _GREEN_("%.0lf") " ]", n);
PrintAndLogEx(INFO, "target delay range [ " _GREEN_("%.0lf") " ... " _GREEN_("%.0lf") " ]", start, end);
PrintAndLogEx(INFO, " search value [ " _GREEN_("%08X") " ]", search_value);
PrintAndLogEx(INFO, " write value [ " _GREEN_("%08X") " ]", write_value);
PrintAndLogEx(INFO, "----------------------------------------------------------------------------\n");
PrintAndLogEx(NORMAL, "");
PrintAndLogEx(INFO, "press " _YELLOW_("'enter'") " to cancel the command");
PrintAndLogEx(NORMAL, "");
PrintAndLogEx(INFO, "--------------- " _CYAN_("start") " -----------------------\n");
int exit_code = PM3_SUCCESS;
uint32_t word14 = 0, word15 = 0;
uint32_t word14b = 0, word15b = 0;
uint32_t tries = 0;
uint32_t soon = 0;
uint32_t late = 0;
//
// main loop
//
//uint32_t prev_delay = 0;
bool success = false;
uint64_t t1 = msclock();
while (start <= end) {
if (my_auto && n < 1) {
PrintAndLogEx(INFO, "Reached n < 1 => " _YELLOW_("disabling automatic mode"));
end = start;
my_auto = false;
n = 0;
}
if (my_auto == false) {
start += n;
}
if (tries >= 5 && n == 0 && soon != late) {
if (soon > late) {
PrintAndLogEx(INFO, "Tried %d times, soon:%i late:%i => " _CYAN_("adjust +1 us >> %.0lf us"), tries, soon, late, start);
start++;
end++;
} else {
PrintAndLogEx(INFO, "Tried %d times, soon:%i late:%i => " _CYAN_("adjust -1 us >> %.0lf us"), tries, soon, late, start);
start--;
end--;
}
tries = 0;
soon = 0;
late = 0;
}
if (is_cancelled()) {
exit_code = PM3_EOPABORTED;
break;
}
// set tear off trigger
clearCommandBuffer();
tearoff_params_t params = {
.delay_us = start,
.on = true,
.off = false
};
res = handle_tearoff(&params, verbose);
if ( res != PM3_SUCCESS ) {
PrintAndLogEx(WARNING, "failed to configure tear off");
return PM3_ESOFT;
}
// write
res = unlock_write_protect(use_pwd, pwd, write_value, verbose);
// read after trigger
res = EM4x05ReadWord_ext(14, pwd, use_pwd, &word14);
if (res != PM3_SUCCESS) {
PrintAndLogEx(WARNING, "failed to read 14");
return PM3_ESOFT;
}
// read after trigger
res = EM4x05ReadWord_ext(15, pwd, use_pwd, &word15);
if (res != PM3_SUCCESS) {
PrintAndLogEx(WARNING, "failed to read 15");
return PM3_ESOFT;
}
if (verbose)
PrintAndLogEx(INFO, "ref:%08X 14:%08X 15:%08X ", search_value, word14, word15);
if ( word14 == search_value && word15 == 0) {
PrintAndLogEx(INFO, "Status: Nothing happened => " _GREEN_("tearing too soon"));
if (my_auto) {
start += n;
PrintAndLogEx(INFO, " => " _CYAN_("adjust +%.0lf us >> %.0lf us"), n, start);
n /= 2;
} else {
soon++;
}
} else {
if (word15 == search_value) {
if (word14 == 0) {
PrintAndLogEx(INFO, "Status: Protect succeeded => " _GREEN_("tearing too late"));
} else {
if ( word14 == search_value) {
PrintAndLogEx(INFO, "Status: 15 ok, 14 not yet erased => " _GREEN_("tearing too late"));
} else {
PrintAndLogEx(INFO, "Status: 15 ok, 14 partially erased => " _GREEN_("tearing too late"));
}
}
unlock_reset(use_pwd, pwd, write_value, verbose);
// read after reset
res = EM4x05ReadWord_ext(14, pwd, use_pwd, &word14b);
if (res != PM3_SUCCESS) {
PrintAndLogEx(WARNING, "failed to read 14");
return PM3_ESOFT;
}
if (word14b == 0) {
unlock_reset(use_pwd, pwd, write_value, verbose);
res = EM4x05ReadWord_ext(14, pwd, use_pwd, &word14b);
if (res != PM3_SUCCESS) {
PrintAndLogEx(WARNING, "failed to read 14");
return PM3_ESOFT;
}
}
if (word14b != search_value) {
res = EM4x05ReadWord_ext(15, pwd, use_pwd, &word15b);
if (res == PM3_SUCCESS) {
PrintAndLogEx(INFO, "Status: new definitive value! => " _RED_("SUCCESS:") " 14: " _CYAN_("%08X") " 15: %08X", word14b, word15b);
success = true;
break;
} else {
PrintAndLogEx(WARNING, "failed to read 15");
return PM3_ESOFT;
}
}
if (my_auto) {
end = start;
start -= n;
PrintAndLogEx(INFO, " => " _CYAN_("adjust -%.0lf us >> %.0lf us"), n, start);
n /= 2;
} else {
late++;
}
} else {
if (( word15 & ACTIVE_MASK) == ACTIVE_MASK) {
PrintAndLogEx(INFO, "Status: 15 bitflipped and active => " _RED_("SUCCESS?: ") "14: %08X 15: " _CYAN_("%08X"), word14, word15);
PrintAndLogEx(INFO, "Committing results...");
unlock_reset(use_pwd, pwd, write_value, verbose);
// read after reset
res = EM4x05ReadWord_ext(14, pwd, use_pwd, &word14b);
if ( res != PM3_SUCCESS ) {
PrintAndLogEx(WARNING, "failed to read 14");
return PM3_ESOFT;
}
res = EM4x05ReadWord_ext(15, pwd, use_pwd, &word15b);
if ( res != PM3_SUCCESS ) {
PrintAndLogEx(WARNING, "failed to read 15");
return PM3_ESOFT;
}
if (verbose)
PrintAndLogEx(INFO, "ref:%08x 14:%08X 15:%08X", search_value, word14b, word15b);
if ((word14b & ACTIVE_MASK) == ACTIVE_MASK) {
if (word14b == word15) {
PrintAndLogEx(INFO, "Status: confirmed => " _RED_("SUCCESS: ") "14: " _CYAN_("%08X") " 15: %08X", word14b, word15b);
success = true;
break;
}
if (word14b != search_value) {
PrintAndLogEx(INFO, "Status: new definitive value! => " _RED_("SUCCESS: ") "14: " _CYAN_("%08X") " 15: %08X", word14b, word15b);
success = true;
break;
}
PrintAndLogEx(INFO, "Status: failed to commit bitflip => " _RED_("FAIL: ") "14: %08X 15: %08X", word14b, word15b);
}
if (my_auto) {
n = 0;
end = start;
} else {
tries = 0;
soon = 0;
late = 0;
}
} else {
PrintAndLogEx(INFO, "Status: 15 bitflipped but inactive => " _YELLOW_("PROMISING: ") "14: %08X 15: " _CYAN_("%08X"), word14, word15);
soon ++;
}
}
}
if (my_auto == false) {
tries++;
}
}
PrintAndLogEx(INFO, "----------------------------- " _CYAN_("exit") " ----------------------------------\n");
t1 = msclock() - t1;
PrintAndLogEx(SUCCESS, "\ntime in unlock " _YELLOW_("%.0f") " seconds\n", (float)t1 / 1000.0);
if (success) {
uint32_t bitflips = search_value ^ word14b;
PrintAndLogEx(INFO, "Old protection word => " _YELLOW_("%08X"), search_value);
char bitstring[9] = {0};
for (int i=0; i < 8; i++) {
bitstring[i] = bitflips & (0xF << ((7-i) * 4)) ? 'x' : '.';
}
// compute number of bits flipped
uint32_t i = bitflips;
i = i - ((i >> 1) & 0x55555555);
i = (i & 0x33333333) + ((i >> 2) & 0x33333333);
i = (((i + (i >> 4)) & 0x0F0F0F0F) * 0x01010101) >> 24;
PrintAndLogEx(INFO, "Bitflips: %2u events => %s", i, bitstring);
PrintAndLogEx(INFO, "New protection word => " _CYAN_("%08X") "\n", word14b);
PrintAndLogEx(INFO, "Try " _YELLOW_("`lf em 4x05_dump`"));
}
PrintAndLogEx(NORMAL, "");
return exit_code;
}
static command_t CommandTable[] = {
{"help", CmdHelp, AlwaysAvailable, "This help"},
{"----------", CmdHelp, AlwaysAvailable, "----------------------- " _CYAN_("EM 410x") " -----------------------"},
//{"410x_demod", CmdEMdemodASK, IfPm3Lf, "Extract ID from EM410x tag on antenna)"},
{"410x_demod", CmdEM410xDemod, AlwaysAvailable, "demodulate a EM410x tag from the GraphBuffer"},
{"410x_read", CmdEM410xRead, IfPm3Lf, "attempt to read and extract tag data"},
{"410x_sim", CmdEM410xSim, IfPm3Lf, "simulate EM410x tag"},
{"410x_brute", CmdEM410xBrute, IfPm3Lf, "reader bruteforce attack by simulating EM410x tags"},
{"410x_watch", CmdEM410xWatch, IfPm3Lf, "watches for EM410x 125/134 kHz tags (option 'h' for 134)"},
{"410x_spoof", CmdEM410xWatchnSpoof, IfPm3Lf, "watches for EM410x 125/134 kHz tags, and replays them. (option 'h' for 134)" },
{"410x_clone", CmdEM410xClone, IfPm3Lf, "write EM410x UID to T55x7 or Q5/T5555 tag"},
{"----------", CmdHelp, AlwaysAvailable, "-------------------- " _CYAN_("EM 4x05 / 4x69") " -------------------"},
{"4x05_chk", CmdEM4x05Chk, IfPm3Lf, "Check passwords from dictionary"},
{"4x05_demod", CmdEM4x05Demod, AlwaysAvailable, "demodulate a EM4x05/EM4x69 tag from the GraphBuffer"},
{"4x05_dump", CmdEM4x05Dump, IfPm3Lf, "dump EM4x05/EM4x69 tag"},
{"4x05_wipe", CmdEM4x05Wipe, IfPm3Lf, "wipe EM4x05/EM4x69 tag"},
{"4x05_info", CmdEM4x05Info, IfPm3Lf, "tag information EM4x05/EM4x69"},
{"4x05_read", CmdEM4x05Read, IfPm3Lf, "read word data from EM4x05/EM4x69"},
{"4x05_write", CmdEM4x05Write, IfPm3Lf, "write word data to EM4x05/EM4x69"},
{"4x05_unlock", CmdEM4x05Unlock, IfPm3Lf, "execute tear off against EM4x05/EM4x69"},
{"----------", CmdHelp, AlwaysAvailable, "----------------------- " _CYAN_("EM 4x50") " -----------------------"},
{"4x50_dump", CmdEM4x50Dump, IfPm3EM4x50, "dump EM4x50 tag"},
{"4x50_info", CmdEM4x50Info, IfPm3EM4x50, "tag information EM4x50"},
{"4x50_write", CmdEM4x50Write, IfPm3EM4x50, "write word data to EM4x50"},
{"4x50_write_password", CmdEM4x50WritePassword, IfPm3EM4x50, "change passwword of EM4x50 tag"},
{"4x50_read", CmdEM4x50Read, IfPm3EM4x50, "read word data from EM4x50"},
{"4x50_wipe", CmdEM4x50Wipe, IfPm3EM4x50, "wipe data from EM4x50"},
{NULL, NULL, NULL, NULL}
};
static int CmdHelp(const char *Cmd) {
(void)Cmd; // Cmd is not used so far
CmdsHelp(CommandTable);
return PM3_SUCCESS;
}
int CmdLFEM4X(const char *Cmd) {
clearCommandBuffer();
return CmdsParse(CommandTable, Cmd);
}