// Low frequency EM4x commands
//-----------------------------------------------------------------------------
+#include "cmdlfem4x.h"
+
#include <stdio.h>
#include <string.h>
#include <inttypes.h>
-#include "cmdlfem4x.h"
-#include "proxmark3.h"
+#include "comms.h"
#include "ui.h"
#include "util.h"
-#include "data.h"
#include "graph.h"
#include "cmdparser.h"
#include "cmddata.h"
#include "cmdmain.h"
#include "lfdemod.h"
#include "protocols.h"
+#include "util_posix.h"
uint64_t g_em410xId=0;
static int CmdHelp(const char *Cmd);
+void ConstructEM410xEmulGraph(const char *uid,const uint8_t clock);
int CmdEMdemodASK(const char *Cmd)
{
(id2lo & 0x000000000f)
);
uint64_t paxton = (((id>>32) << 24) | (id & 0xffffff)) + 0x143e00;
- PrintAndLog("}\nOther : %05" PRIu64 "_%03" PRIu64 "_%08" PRIu64 "",(id&0xFFFF),((id>>16LL) & 0xFF),(id & 0xFFFFFF));
+ PrintAndLog("}\nOther : %05" PRIu64 "_%03" PRIu64 "_%08" PRIu64 "",(id&0xFFFF),((id>>16LL) & 0xFF),(id & 0xFFFFFF));
PrintAndLog("Pattern Paxton : %" PRIu64 " [0x%" PRIX64 "]", paxton, paxton);
uint32_t p1id = (id & 0xFFFFFF);
uint8_t arr[32] = {0x00};
- int i =0;
+ int i =0;
int j = 23;
for (; i < 24; ++i, --j ){
arr[i] = (p1id >> i) & 1;
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;
int AskEm410xDecode(bool verbose, uint32_t *hi, uint64_t *lo )
{
size_t idx = 0;
- size_t BitLen = DemodBufferLen;
- uint8_t BitStream[MAX_GRAPH_TRACE_LEN]={0};
- memcpy(BitStream, DemodBuffer, BitLen);
- if (Em410xDecode(BitStream, &BitLen, &idx, hi, lo)){
+ uint8_t BitStream[512]={0};
+ size_t BitLen = sizeof(BitStream);
+ if ( !getDemodBuf(BitStream, &BitLen) ) return 0;
+
+ if (Em410xDecode(BitStream, &BitLen, &idx, hi, lo)) {
//set GraphBuffer for clone or sim command
- setDemodBuf(BitStream, BitLen, idx);
- if (g_debugMode){
+ setDemodBuf(DemodBuffer, (BitLen==40) ? 64 : 128, idx+1);
+ setClockGrid(g_DemodClock, g_DemodStartIdx + ((idx+1)*g_DemodClock));
+
+ if (g_debugMode) {
PrintAndLog("DEBUG: idx: %d, Len: %d, Printing Demod Buffer:", idx, BitLen);
printDemodBuff();
}
- if (verbose){
+ if (verbose) {
PrintAndLog("EM410x pattern found: ");
printEM410x(*hi, *lo);
g_em410xId = *lo;
return 0;
}
-// emulate an EM410X tag
-int CmdEM410xSim(const char *Cmd)
+// Construct the graph for emulating an EM410X tag
+void ConstructEM410xEmulGraph(const char *uid,const uint8_t clock)
{
int i, n, j, binary[4], parity[4];
+ /* clear our graph */
+ ClearGraph(0);
+
+ /* write 9 start bits */
+ for (i = 0; i < 9; i++)
+ AppendGraph(0, 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(0, clock, binary[0]);
+ AppendGraph(0, clock, binary[1]);
+ AppendGraph(0, clock, binary[2]);
+ AppendGraph(0, clock, binary[3]);
+
+ /* append parity bit */
+ AppendGraph(0, 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(0, clock, parity[0]);
+ AppendGraph(0, clock, parity[1]);
+ AppendGraph(0, clock, parity[2]);
+ AppendGraph(0, clock, parity[3]);
+
+ /* stop bit */
+ AppendGraph(1, clock, 0);
+}
+// emulate an EM410X tag
+int CmdEM410xSim(const char *Cmd)
+{
char cmdp = param_getchar(Cmd, 0);
uint8_t uid[5] = {0x00};
param_getdec(Cmd,1, &clock);
PrintAndLog("Starting simulating UID %02X%02X%02X%02X%02X clock: %d", uid[0],uid[1],uid[2],uid[3],uid[4],clock);
- PrintAndLog("Press pm3-button to about simulation");
+ PrintAndLog("Press pm3-button to abort simulation");
+
+ ConstructEM410xEmulGraph(Cmd, clock);
+
+ CmdLFSim("0"); //240 start_gap.
+ return 0;
+}
+int usage_lf_em410x_brute(void) {
+ PrintAndLog("Bruteforcing by emulating EM410x tag");
+ PrintAndLog("");
+ PrintAndLog("Usage: lf em 410xbrute [h] ids.txt [d 2000] [c clock]");
+ PrintAndLog("Options:");
+ PrintAndLog(" h - this help");
+ PrintAndLog(" ids.txt - file with UIDs in HEX format, one per line");
+ PrintAndLog(" d (2000) - pause delay in milliseconds between UIDs simulation, default 1000 ms (optional)");
+ PrintAndLog(" c (32) - clock (32|64), default 64 (optional)");
+ PrintAndLog("samples:");
+ PrintAndLog(" lf em 410xbrute ids.txt");
+ PrintAndLog(" lf em 410xbrute ids.txt c 32");
+ PrintAndLog(" lf em 410xbrute ids.txt d 3000");
+ PrintAndLog(" lf em 410xbrute ids.txt d 3000 c 32");
+ return 0;
+}
- /* clear our graph */
- ClearGraph(0);
+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;
+ int ch;
+ uint8_t uid[5] = {0x00};
+ /* clock is 64 in EM410x tags */
+ uint8_t clock = 64;
+ /* default pause time: 1 second */
+ uint32_t delay = 1000;
+
+ char cmdp = param_getchar(Cmd, 0);
+
+ if (cmdp == 'h' || cmdp == 'H') return usage_lf_em410x_brute();
+
- /* write 9 start bits */
- for (i = 0; i < 9; i++)
- AppendGraph(0, clock, 1);
+ cmdp = param_getchar(Cmd, 1);
+
+ if (cmdp == 'd' || cmdp == 'D') {
+ delay = param_get32ex(Cmd, 2, 1000, 10);
+ param_getdec(Cmd, 4, &clock);
+ } else if (cmdp == 'c' || cmdp == 'C') {
+ param_getdec(Cmd, 2, &clock);
+ delay = param_get32ex(Cmd, 4, 1000, 10);
+ }
- /* for each hex char */
- parity[0] = parity[1] = parity[2] = parity[3] = 0;
- for (i = 0; i < 10; i++)
- {
- /* read each hex char */
- sscanf(&Cmd[i], "%1x", &n);
- for (j = 3; j >= 0; j--, n/= 2)
- binary[j] = n % 2;
-
- /* append each bit */
- AppendGraph(0, clock, binary[0]);
- AppendGraph(0, clock, binary[1]);
- AppendGraph(0, clock, binary[2]);
- AppendGraph(0, clock, binary[3]);
-
- /* append parity bit */
- AppendGraph(0, 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];
+ param_getstr(Cmd, 0, filename, sizeof(filename));
+
+ uidBlock = calloc(stUidBlock, 5);
+ if (uidBlock == NULL) return 1;
+
+ if (strlen(filename) > 0) {
+ if ((f = fopen(filename, "r")) == NULL) {
+ PrintAndLog("Error: Could not open UIDs file [%s]",filename);
+ free(uidBlock);
+ return 1;
}
+ } else {
+ PrintAndLog("Error: Please specify a filename");
+ free(uidBlock);
+ return 1;
+ }
- /* parity columns */
- AppendGraph(0, clock, parity[0]);
- AppendGraph(0, clock, parity[1]);
- AppendGraph(0, clock, parity[2]);
- AppendGraph(0, clock, parity[3]);
+ while( fgets(buf, sizeof(buf), f) ) {
+ if (strlen(buf) < 10 || buf[9] == '\n') continue;
+ while (fgetc(f) != '\n' && !feof(f)); //goto next line
- /* stop bit */
- AppendGraph(1, clock, 0);
-
- CmdLFSim("0"); //240 start_gap.
+ //The line start with # is comment, skip
+ if( buf[0]=='#' ) continue;
+
+ if (param_gethex(buf, 0, uid, 10)) {
+ PrintAndLog("UIDs must include 10 HEX symbols");
+ free(uidBlock);
+ fclose(f);
+ return 1;
+ }
+
+ buf[10] = 0;
+
+ if ( stUidBlock - uidcnt < 2) {
+ p = realloc(uidBlock, 5*(stUidBlock+=10));
+ if (!p) {
+ PrintAndLog("Cannot allocate memory for UIDs");
+ free(uidBlock);
+ fclose(f);
+ return 1;
+ }
+ 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) {
+ PrintAndLog("No UIDs found in file");
+ free(uidBlock);
+ return 1;
+ }
+ PrintAndLog("Loaded %d UIDs from %s, pause delay: %d ms", uidcnt, filename, delay);
+
+ // loop
+ for(uint32_t c = 0; c < uidcnt; ++c ) {
+ char testuid[11];
+ testuid[10] = 0;
+
+ if (ukbhit()) {
+ ch = getchar();
+ (void)ch;
+ printf("\nAborted via keyboard!\n");
+ free(uidBlock);
+ return 0;
+ }
+
+ sprintf(testuid, "%010" PRIX64, bytes_to_num(uidBlock + 5*c, 5));
+ PrintAndLog("Bruteforce %d / %d: simulating UID %s, clock %d", c + 1, uidcnt, testuid, clock);
+
+ ConstructEM410xEmulGraph(testuid, clock);
+
+ CmdLFSim("0"); //240 start_gap.
+
+ msleep(delay);
+ }
+
+ free(uidBlock);
return 0;
}
+
/* Function is equivalent of lf read + data samples + em410xread
- * looped until an EM410x tag is detected
- *
+ * looped until an EM410x tag is detected
+ *
* Why is CmdSamples("16000")?
* TBD: Auto-grow sample size based on detected sample rate. IE: If the
* rate gets lower, then grow the number of samples
- * Changed by martin, 4000 x 4 = 16000,
+ * Changed by martin, 4000 x 4 = 16000,
* see http://www.proxmark.org/forum/viewtopic.php?pid=7235#p7235
*
* EDIT -- capture enough to get 2 complete preambles at the slowest data rate known to be used (rf/64) (64*64*2+9 = 8201) marshmellow
printf("\naborted via keyboard!\n");
break;
}
-
- CmdLFRead("s");
- getSamples("8201",true);
+ lf_read(true, 8201);
} while (!CmdAskEM410xDemod(""));
return 0;
int EM4x50Read(const char *Cmd, bool verbose)
{
uint8_t fndClk[] = {8,16,32,40,50,64,128};
- int clk = 0;
+ int clk = 0;
int invert = 0;
int tol = 0;
int i, j, startblock, skip, block, start, end, low, high, minClk;
char tmp2[20];
int phaseoff;
high = low = 0;
- memset(tmpbuff, 0, MAX_GRAPH_TRACE_LEN / 64);
+ memset(tmpbuff, 0, sizeof(tmpbuff));
// get user entry if any
sscanf(Cmd, "%i %i", &clk, &invert);
-
- // save GraphBuffer - to restore it later
- save_restoreGB(1);
// first get high and low values
for (i = 0; i < GraphTraceLen; i++) {
if (!clk) {
for (uint8_t clkCnt = 0; clkCnt<7; clkCnt++) {
tol = fndClk[clkCnt]/8;
- if (minClk >= fndClk[clkCnt]-tol && minClk <= fndClk[clkCnt]+1) {
+ if (minClk >= fndClk[clkCnt]-tol && minClk <= fndClk[clkCnt]+1) {
clk=fndClk[clkCnt];
break;
}
// skip over the remainder of LW
skip += tmpbuff[i+1] + tmpbuff[i+2] + clk;
- if (tmpbuff[i+3]>clk)
+ if (tmpbuff[i+3]>clk)
phaseoff = tmpbuff[i+3]-clk;
else
phaseoff = 0;
} else if (start < 0) return 0;
start = skip;
snprintf(tmp2, sizeof(tmp2),"%d %d 1000 %d", clk, invert, clk*47);
- // get rid of leading crap
+ // save GraphBuffer - to restore it later
+ save_restoreGB(GRAPH_SAVE);
+ // get rid of leading crap
snprintf(tmp, sizeof(tmp), "%i", skip);
CmdLtrim(tmp);
bool pTest;
while (block < 6) {
if (verbose || g_debugMode) PrintAndLog("\nBlock %i:", block);
skip = phaseoff;
-
+
// look for LW before start of next block
for ( ; i < j - 4 ; ++i) {
skip += tmpbuff[i];
phaseoff = 0;
i += 2;
if (ASKDemod(tmp2, false, false, 1) < 1) {
- save_restoreGB(0);
+ save_restoreGB(GRAPH_RESTORE);
return 0;
}
//set DemodBufferLen to just one block
DemodBufferLen = skip/clk;
//test parities
- pTest = EM_ByteParityTest(DemodBuffer,DemodBufferLen,5,9,0);
+ pTest = EM_ByteParityTest(DemodBuffer,DemodBufferLen,5,9,0);
pTest &= EM_EndParityTest(DemodBuffer,DemodBufferLen,5,9,0);
AllPTest &= pTest;
//get output
PrintAndLog("Partial data - no end found!");
PrintAndLog("Try again with more samples.");
}
- PrintAndLog("Found data at sample: %i - using clock: %i", start, clk);
+ PrintAndLog("Found data at sample: %i - using clock: %i", start, clk);
end = block;
for (block=0; block < end; block++){
PrintAndLog("Block %d: %08x",block,Code[block]);
}
//restore GraphBuffer
- save_restoreGB(0);
+ save_restoreGB(GRAPH_RESTORE);
return (int)AllPTest;
}
// download samples from device and copy them to the Graphbuffer
bool downloadSamplesEM() {
// 8 bit preamble + 32 bit word response (max clock (128) * 40bits = 5120 samples)
- uint8_t got[6000];
- GetFromBigBuf(got, sizeof(got), 0);
- if ( !WaitForResponseTimeout(CMD_ACK, NULL, 4000) ) {
+ uint8_t got[6000];
+ if (!GetFromBigBuf(got, sizeof(got), 0, NULL, 4000, true)) {
PrintAndLog("command execution time out");
return false;
}
return false;
}
// test for even parity bits and remove them. (leave out the end row of parities so 36 bits)
- if ( removeParity(DemodBuffer, startIdx + sizeof(preamble),9,0,36) == 0 ) {
+ if ( removeParity(DemodBuffer, startIdx + sizeof(preamble),9,0,36) == 0 ) {
if (g_debugMode) PrintAndLog("DEBUG: Error - Parity not detected");
return false;
}
setDemodBuf(DemodBuffer, 32, 0);
+ //setClockGrid(0,0);
+
*word = bytebits_to_byteLSBF(DemodBuffer, 32);
}
return true;
}
-// FSK, PSK, ASK/MANCHESTER, ASK/BIPHASE, ASK/DIPHASE
+// FSK, PSK, ASK/MANCHESTER, ASK/BIPHASE, ASK/DIPHASE
// should cover 90% of known used configs
// the rest will need to be manually demoded for now...
int demodEM4x05resp(uint32_t *word, bool readCmd) {
//try biphase
ans = ASKbiphaseDemod("0 0 1", false);
- if (!ans) {
+ if (!ans) {
if (g_debugMode) PrintAndLog("DEBUG: Error - EM4305: ASK/biphase Demod failed, ans: %d", ans);
} else {
if (EM4x05testDemodReadData(word, readCmd)) {
//try diphase (differential biphase or inverted)
ans = ASKbiphaseDemod("0 1 1", false);
- if (!ans) {
+ if (!ans) {
if (g_debugMode) PrintAndLog("DEBUG: Error - EM4305: ASK/biphase Demod failed, ans: %d", ans);
} else {
if (EM4x05testDemodReadData(word, readCmd)) {
UsbCommand c = {CMD_EM4X_READ_WORD, {addr, pwd, usePwd}};
clearCommandBuffer();
SendCommand(&c);
- UsbCommand resp;
+ UsbCommand resp;
if (!WaitForResponseTimeout(CMD_ACK, &resp, 2500)){
PrintAndLog("Command timed out");
return -1;
}
int testLen = (GraphTraceLen < 1000) ? GraphTraceLen : 1000;
if (graphJustNoise(GraphBuffer, testLen)) {
- PrintAndLog("no tag not found");
return -1;
}
//attempt demod:
addr = param_get8ex(Cmd, 0, 50, 10);
// for now use default input of 1 as invalid (unlikely 1 will be a valid password...)
pwd = param_get32ex(Cmd, 1, 1, 16);
-
+
if ( (addr > 15) ) {
PrintAndLog("Address must be between 0 and 15");
return 1;
// for now use default input of 1 as invalid (unlikely 1 will be a valid password...)
pwd = param_get32ex(Cmd, 0, 1, 16);
-
+
if ( pwd != 1 ) {
usePwd = true;
}
PrintAndLog("Options:");
PrintAndLog(" h - this help");
PrintAndLog(" a <address> - memory address to write to. (0-15)");
- PrintAndLog(" d <data> - data to write (hex)");
+ PrintAndLog(" d <data> - data to write (hex)");
PrintAndLog(" p <pwd> - password (hex) (optional)");
PrintAndLog(" s - swap the data bit order before write");
PrintAndLog(" i - invert the data bits before write");
PrintAndLog(" PSK CF: %u | %s", PSKcf, cf);
PrintAndLog(" Delay: %u | %s", delay, cdelay);
PrintAndLog(" LastWordR: %02u | Address of last word for default read - meaning %u blocks are output", LWR, numblks);
- PrintAndLog(" ReadLogin: %u | Read Login is %s", readLogin, readLogin ? "Required" : "Not Required");
- PrintAndLog(" ReadHKL: %u | Read Housekeeping Words Login is %s", readHKL, readHKL ? "Required" : "Not Required");
- PrintAndLog("WriteLogin: %u | Write Login is %s", writeLogin, writeLogin ? "Required" : "Not Required");
- PrintAndLog(" WriteHKL: %u | Write Housekeeping Words Login is %s", writeHKL, writeHKL ? "Required" : "Not Required");
+ PrintAndLog(" ReadLogin: %u | Read Login is %s", readLogin, readLogin ? "Required" : "Not Required");
+ PrintAndLog(" ReadHKL: %u | Read Housekeeping Words Login is %s", readHKL, readHKL ? "Required" : "Not Required");
+ PrintAndLog("WriteLogin: %u | Write Login is %s", writeLogin, writeLogin ? "Required" : "Not Required");
+ PrintAndLog(" WriteHKL: %u | Write Housekeeping Words Login is %s", writeHKL, writeHKL ? "Required" : "Not Required");
PrintAndLog(" R.A.W.: %u | Read After Write is %s", raw, raw ? "On" : "Off");
PrintAndLog(" Disable: %u | Disable Command is %s", disable, disable ? "Accepted" : "Not Accepted");
PrintAndLog(" R.T.F.: %u | Reader Talk First is %s", rtf, rtf ? "Enabled" : "Disabled");
// for now use default input of 1 as invalid (unlikely 1 will be a valid password...)
pwd = param_get32ex(Cmd, 0, 1, 16);
-
+
if ( pwd != 1 ) {
usePwd = true;
}
// read word 0 (chip info)
// block 0 can be read even without a password.
- if ( !EM4x05Block0Test(&wordData) )
+ if ( !EM4x05Block0Test(&wordData) )
return -1;
-
+
uint8_t chipType = (wordData >> 1) & 0xF;
uint8_t cap = (wordData >> 5) & 3;
uint16_t custCode = (wordData >> 9) & 0x3FF;
-
+
// read word 1 (serial #) doesn't need pwd
wordData = 0;
if (EM4x05ReadWord_ext(1, 0, false, &wordData) != 1) {
}
printEM4x05info(chipType, cap, custCode, wordData);
- // read word 4 (config block)
+ // read word 4 (config block)
// needs password if one is set
wordData = 0;
if ( EM4x05ReadWord_ext(4, pwd, usePwd, &wordData) != 1 ) {
static command_t CommandTable[] =
{
{"help", CmdHelp, 1, "This help"},
- {"410xread", CmdEMdemodASK, 0, "[findone] -- Extract ID from EM410x tag (option 0 for continuous loop, 1 for only 1 tag)"},
+ {"410xread", CmdEMdemodASK, 0, "[findone] -- Extract ID from EM410x tag (option 0 for continuous loop, 1 for only 1 tag)"},
{"410xdemod", CmdAskEM410xDemod, 1, "[clock] [invert<0|1>] [maxErr] -- Demodulate an EM410x tag from GraphBuffer (args optional)"},
{"410xsim", CmdEM410xSim, 0, "<UID> [clock rate] -- Simulate EM410x tag"},
+ {"410xbrute", CmdEM410xBrute, 0, "ids.txt [d (delay in ms)] [c (clock rate)] -- Reader bruteforce attack by simulating EM410x tags"},
{"410xwatch", CmdEM410xWatch, 0, "['h'] -- Watches for EM410x 125/134 kHz tags (option 'h' for 134)"},
{"410xspoof", CmdEM410xWatchnSpoof, 0, "['h'] --- Watches for EM410x 125/134 kHz tags, and replays them. (option 'h' for 134)" },
{"410xwrite", CmdEM410xWrite, 0, "<UID> <'0' T5555> <'1' T55x7> [clock rate] -- Write EM410x UID to T5555(Q5) or T55x7 tag, optionally setting clock rate"},
projects / proxmark3-svn / blobdiff