// Low frequency EM4x commands
//-----------------------------------------------------------------------------
+#include "cmdlfem4x.h"
+
#include <stdio.h>
#include <string.h>
#include <inttypes.h>
-#include "proxmark3.h"
+#include "comms.h"
#include "ui.h"
#include "util.h"
#include "graph.h"
#include "cmddata.h"
#include "cmdlf.h"
#include "cmdmain.h"
-#include "cmdlfem4x.h"
#include "lfdemod.h"
+#include "protocols.h"
+#include "util_posix.h"
-char *global_em410xId;
+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)
{
return 0;
}
+//by marshmellow
+//print 64 bit EM410x ID in multiple formats
+void printEM410x(uint32_t hi, uint64_t id)
+{
+ if (id || hi){
+ uint64_t iii=1;
+ uint64_t id2lo=0;
+ uint32_t ii=0;
+ uint32_t i=0;
+ for (ii=5; ii>0;ii--){
+ for (i=0;i<8;i++){
+ id2lo=(id2lo<<1LL) | ((id & (iii << (i+((ii-1)*8)))) >> (i+((ii-1)*8)));
+ }
+ }
+ if (hi){
+ //output 88 bit em id
+ PrintAndLog("\nEM TAG ID : %06X%016" PRIX64, hi, id);
+ } else{
+ //output 40 bit em id
+ PrintAndLog("\nEM TAG ID : %010" PRIX64, id);
+ PrintAndLog("\nPossible de-scramble patterns");
+ PrintAndLog("Unique TAG ID : %010" PRIX64, id2lo);
+ PrintAndLog("HoneyWell IdentKey {");
+ PrintAndLog("DEZ 8 : %08" PRIu64,id & 0xFFFFFF);
+ PrintAndLog("DEZ 10 : %010" PRIu64,id & 0xFFFFFFFF);
+ PrintAndLog("DEZ 5.5 : %05lld.%05" PRIu64,(id>>16LL) & 0xFFFF,(id & 0xFFFF));
+ PrintAndLog("DEZ 3.5A : %03lld.%05" PRIu64,(id>>32ll),(id & 0xFFFF));
+ PrintAndLog("DEZ 3.5B : %03lld.%05" PRIu64,(id & 0xFF000000) >> 24,(id & 0xFFFF));
+ PrintAndLog("DEZ 3.5C : %03lld.%05" PRIu64,(id & 0xFF0000) >> 16,(id & 0xFFFF));
+ PrintAndLog("DEZ 14/IK2 : %014" PRIu64,id);
+ PrintAndLog("DEZ 15/IK3 : %015" PRIu64,id2lo);
+ PrintAndLog("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;
+ 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 j = 23;
+ for (; i < 24; ++i, --j ){
+ arr[i] = (p1id >> i) & 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;
+ PrintAndLog("Pattern 1 : %d [0x%X]", p1, p1);
+
+ uint16_t sebury1 = id & 0xFFFF;
+ uint8_t sebury2 = (id >> 16) & 0x7F;
+ uint32_t sebury3 = id & 0x7FFFFF;
+ PrintAndLog("Pattern Sebury : %d %d %d [0x%X 0x%X 0x%X]", sebury1, sebury2, sebury3, sebury1, sebury2, sebury3);
+ }
+ }
+ return;
+}
+
/* Read the ID of an EM410x tag.
* Format:
* 1111 1111 1 <-- standard non-repeatable header
* CCCC <-- each bit here is parity for the 10 bits above in corresponding column
* 0 <-- stop bit, end of tag
*/
-int CmdEM410xRead(const char *Cmd)
+int AskEm410xDecode(bool verbose, uint32_t *hi, uint64_t *lo )
+{
+ size_t idx = 0;
+ 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(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) {
+ PrintAndLog("EM410x pattern found: ");
+ printEM410x(*hi, *lo);
+ g_em410xId = *lo;
+ }
+ return 1;
+ }
+ return 0;
+}
+
+//askdemod then call Em410xdecode
+int AskEm410xDemod(const char *Cmd, uint32_t *hi, uint64_t *lo, bool verbose)
+{
+ bool st = true;
+ if (!ASKDemod_ext(Cmd, false, false, 1, &st)) return 0;
+ return AskEm410xDecode(verbose, hi, lo);
+}
+
+//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 CmdAskEM410xDemod(const char *Cmd)
{
- uint32_t hi=0;
- uint64_t lo=0;
-
- if(!AskEm410xDemod("", &hi, &lo, false)) return 0;
- PrintAndLog("EM410x pattern found: ");
- printEM410x(hi, lo);
- if (hi){
- PrintAndLog ("EM410x XL pattern found");
+ char cmdp = param_getchar(Cmd, 0);
+ if (strlen(Cmd) > 10 || cmdp == 'h' || cmdp == 'H') {
+ PrintAndLog("Usage: lf em 410xdemod [clock] <0|1> [maxError]");
+ PrintAndLog(" [set clock as integer] optional, if not set, autodetect.");
+ PrintAndLog(" <invert>, 1 for invert output");
+ PrintAndLog(" [set maximum allowed errors], default = 100.");
+ PrintAndLog("");
+ PrintAndLog(" sample: lf em 410xdemod = demod an EM410x Tag ID from GraphBuffer");
+ PrintAndLog(" : lf em 410xdemod 32 = demod an EM410x Tag ID from GraphBuffer using a clock of RF/32");
+ PrintAndLog(" : lf em 410xdemod 32 1 = demod an EM410x Tag ID from GraphBuffer using a clock of RF/32 and inverting data");
+ PrintAndLog(" : lf em 410xdemod 1 = demod an EM410x Tag ID from GraphBuffer while inverting data");
+ PrintAndLog(" : lf em 410xdemod 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 0;
}
- char id[12] = {0x00};
- sprintf(id, "%010"PRIx64,lo);
-
- global_em410xId = id;
- return 1;
+ uint64_t lo = 0;
+ uint32_t hi = 0;
+ return AskEm410xDemod(Cmd, &hi, &lo, true);
}
-// emulate an EM410X tag
-int CmdEM410xSim(const char *Cmd)
+int usage_lf_em410x_sim(void) {
+ PrintAndLog("Simulating EM410x tag");
+ PrintAndLog("");
+ PrintAndLog("Usage: lf em 410xsim [h] <uid> <clock>");
+ PrintAndLog("Options:");
+ PrintAndLog(" h - this help");
+ PrintAndLog(" uid - uid (10 HEX symbols)");
+ PrintAndLog(" clock - clock (32|64) (optional)");
+ PrintAndLog("samples:");
+ PrintAndLog(" lf em 410xsim 0F0368568B");
+ PrintAndLog(" lf em 410xsim 0F0368568B 32");
+ return 0;
+}
+
+// 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};
- if (cmdp == 'h' || cmdp == 'H') {
- PrintAndLog("Usage: lf em 410xsim <UID> <clock>");
- PrintAndLog("");
- PrintAndLog(" sample: lf em 410xsim 0F0368568B");
- return 0;
- }
+ if (cmdp == 'h' || cmdp == 'H') return usage_lf_em410x_sim();
/* clock is 64 in EM410x tags */
uint8_t clock = 64;
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;
+}
- /* clear our graph */
- ClearGraph(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;
+}
+
+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];
- }
-
- /* 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);
-
- CmdLFSim("0"); //240 start_gap.
+ 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;
+ }
+
+ 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)) {
+ 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
*/
int CmdEM410xWatch(const char *Cmd)
{
printf("\naborted via keyboard!\n");
break;
}
-
- CmdLFRead("s");
- getSamples("8201",true); //capture enough to get 2 complete preambles (4096*2+9)
- } while (!CmdEM410xRead(""));
+ lf_read(true, 8201);
+ } while (!CmdAskEM410xDemod(""));
return 0;
}
int CmdEM410xWatchnSpoof(const char *Cmd)
{
CmdEM410xWatch(Cmd);
- PrintAndLog("# Replaying captured ID: %s",global_em410xId);
+ PrintAndLog("# Replaying captured ID: %010"PRIx64, g_em410xId);
CmdLFaskSim("");
return 0;
}
int card = 0xFF; // invalid card value
unsigned int clock = 0; // invalid clock value
- sscanf(Cmd, "%" PRIx64 " %d %d", &id, &card, &clock);
+ sscanf(Cmd, "%" SCNx64 " %d %d", &id, &card, &clock);
// Check ID
if (id == 0xFFFFFFFFFFFFFFFF) {
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;
}
}
bool EM4x05testDemodReadData(uint32_t *word, bool readCmd) {
- // em4x05/em4x69 preamble is 00001010
+ // em4x05/em4x69 command response preamble is 00001010
// skip first two 0 bits as they might have been missed in the demod
uint8_t preamble[] = {0,0,1,0,1,0};
size_t startIdx = 0;
- // set size to 20 to only test first 14 positions for the preamble
- size_t size = (20 > DemodBufferLen) ? DemodBufferLen : 20;
- //test preamble
- if ( !onePreambleSearch(DemodBuffer, preamble, sizeof(preamble), size, &startIdx) ) {
+ // set size to 20 to only test first 14 positions for the preamble or less if not a read command
+ size_t size = (readCmd) ? 20 : 11;
+ // sanity check
+ size = (size > DemodBufferLen) ? DemodBufferLen : size;
+ // test preamble
+ if ( !preambleSearchEx(DemodBuffer, preamble, sizeof(preamble), &size, &startIdx, true) ) {
if (g_debugMode) PrintAndLog("DEBUG: Error - EM4305 preamble not found :: %d", startIdx);
return false;
}
if (g_debugMode) PrintAndLog("DEBUG: Error - End Parity check failed");
return false;
}
- //test for even parity bits.
- if ( removeParity(DemodBuffer, startIdx + sizeof(preamble),9,0,44) == 0 ) {
+ // 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 (g_debugMode) PrintAndLog("DEBUG: Error - Parity not detected");
return false;
}
- setDemodBuf(DemodBuffer, 40, 0);
+ 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:
uint32_t wordData = 0;
int success = EM4x05ReadWord_ext(addr, pwd, usePwd, &wordData);
if (success == 1)
- PrintAndLog(" Got Address %02d | %08X",addr,wordData);
+ PrintAndLog("%s Address %02d | %08X", (addr>13) ? "Lock":" Got",addr,wordData);
else
PrintAndLog("Read Address %02d | failed",addr);
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;
}
int usage_lf_em_write(void) {
PrintAndLog("Write EM4x05/EM4x69. Tag must be on antenna. ");
PrintAndLog("");
- PrintAndLog("Usage: lf em 4x05writeword [h] <address> <data> <pwd>");
+ PrintAndLog("Usage: lf em 4x05writeword [h] a <address> d <data> p <pwd> [s] [i]");
PrintAndLog("Options:");
- PrintAndLog(" h - this help");
- PrintAndLog(" address - memory address to write to. (0-15)");
- PrintAndLog(" data - data to write (hex)");
- PrintAndLog(" pwd - password (hex) (optional)");
+ PrintAndLog(" h - this help");
+ PrintAndLog(" a <address> - memory address to write to. (0-15)");
+ 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("samples:");
- PrintAndLog(" lf em 4x05writeword 1");
- PrintAndLog(" lf em 4x05writeword 1 deadc0de 11223344");
+ PrintAndLog(" lf em 4x05writeword a 5 d 11223344");
+ PrintAndLog(" lf em 4x05writeword a 5 p deadc0de d 11223344 s i");
return 0;
}
-int CmdEM4x05WriteWord(const char *Cmd) {
- uint8_t ctmp = param_getchar(Cmd, 0);
- if ( strlen(Cmd) == 0 || ctmp == 'H' || ctmp == 'h' ) return usage_lf_em_write();
-
- bool usePwd = false;
-
- uint8_t addr = 16; // default to invalid address
- uint32_t data = 0xFFFFFFFF; // default to blank data
- uint32_t pwd = 0xFFFFFFFF; // default to blank password
-
- addr = param_get8ex(Cmd, 0, 16, 10);
- data = param_get32ex(Cmd, 1, 0, 16);
- pwd = param_get32ex(Cmd, 2, 1, 16);
-
-
+// note: em4x05 doesn't have a way to invert data output so we must invert the data prior to writing
+// it if invertion is needed. (example FSK2a vs FSK)
+// also em4x05 requires swapping word data when compared to the data used for t55xx chips.
+int EM4x05WriteWord(uint8_t addr, uint32_t data, uint32_t pwd, bool usePwd, bool swap, bool invert) {
+ if (swap) data = SwapBits(data, 32);
+
+ if (invert) data ^= 0xFFFFFFFF;
+
if ( (addr > 15) ) {
PrintAndLog("Address must be between 0 and 15");
- return 1;
+ return -1;
}
- if ( pwd == 1 )
- PrintAndLog("Writing address %d data %08X", addr, data);
- else {
- usePwd = true;
- PrintAndLog("Writing address %d data %08X using password %08X", addr, data, pwd);
+ if ( !usePwd ) {
+ PrintAndLog("Writing address %d data %08X", addr, data);
+ } else {
+ PrintAndLog("Writing address %d data %08X using password %08X", addr, data, pwd);
}
-
+
uint16_t flag = (addr << 8 ) | usePwd;
-
+
UsbCommand c = {CMD_EM4X_WRITE_WORD, {flag, data, pwd}};
clearCommandBuffer();
SendCommand(&c);
- UsbCommand resp;
+ UsbCommand resp;
if (!WaitForResponseTimeout(CMD_ACK, &resp, 2000)){
PrintAndLog("Error occurred, device did not respond during write operation.");
return -1;
if ( !downloadSamplesEM() ) {
return -1;
}
- //check response for 00001010 for write confirmation!
+ //check response for 00001010 for write confirmation!
//attempt demod:
uint32_t dummy = 0;
int result = demodEM4x05resp(&dummy,false);
if (result == 1) {
PrintAndLog("Write Verified");
+ } else {
+ PrintAndLog("Write could not be verified");
}
return result;
}
+int CmdEM4x05WriteWord(const char *Cmd) {
+ bool errors = false;
+ bool usePwd = false;
+ uint32_t data = 0xFFFFFFFF;
+ uint32_t pwd = 0xFFFFFFFF;
+ bool swap = false;
+ bool invert = false;
+ uint8_t addr = 16; // default to invalid address
+ bool gotData = false;
+ char cmdp = 0;
+ while(param_getchar(Cmd, cmdp) != 0x00)
+ {
+ switch(param_getchar(Cmd, cmdp))
+ {
+ case 'h':
+ case 'H':
+ return usage_lf_em_write();
+ case 'a':
+ case 'A':
+ addr = param_get8ex(Cmd, cmdp+1, 16, 10);
+ cmdp += 2;
+ break;
+ case 'd':
+ case 'D':
+ data = param_get32ex(Cmd, cmdp+1, 0, 16);
+ gotData = true;
+ cmdp += 2;
+ break;
+ case 'i':
+ case 'I':
+ invert = true;
+ cmdp++;
+ break;
+ case 'p':
+ case 'P':
+ pwd = param_get32ex(Cmd, cmdp+1, 1, 16);
+ if (pwd == 1) {
+ PrintAndLog("invalid pwd");
+ errors = true;
+ }
+ usePwd = true;
+ cmdp += 2;
+ break;
+ case 's':
+ case 'S':
+ swap = true;
+ cmdp++;
+ break;
+ default:
+ PrintAndLog("Unknown parameter '%c'", param_getchar(Cmd, cmdp));
+ errors = true;
+ break;
+ }
+ if(errors) break;
+ }
+ //Validations
+ if(errors) return usage_lf_em_write();
+
+ if ( strlen(Cmd) == 0 ) return usage_lf_em_write();
+
+ if (!gotData) {
+ PrintAndLog("You must enter the data you want to write");
+ return usage_lf_em_write();
+ }
+ return EM4x05WriteWord(addr, data, pwd, usePwd, swap, invert);
+}
+
void printEM4x05config(uint32_t wordData) {
- uint16_t datarate = (((wordData & 0x3F)+1)*2);
+ uint16_t datarate = EM4x05_GET_BITRATE(wordData);
uint8_t encoder = ((wordData >> 6) & 0xF);
char enc[14];
memset(enc,0,sizeof(enc));
uint8_t delay = (wordData >> 12) & 0x3;
char cdelay[33];
memset(cdelay,0,sizeof(cdelay));
- uint8_t LWR = (wordData >> 14) & 0xF; //last word read
-
+ 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(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;
PrintAndLog("ConfigWord: %08X (Word 4)\n", wordData);
- PrintAndLog("Config Breakdown:", wordData);
- PrintAndLog(" Data Rate: %02X | RF/%u", wordData & 0x3F, datarate);
+ PrintAndLog("Config Breakdown:");
+ PrintAndLog(" Data Rate: %02u | RF/%u", wordData & 0x3F, datarate);
PrintAndLog(" Encoder: %u | %s", encoder, enc);
PrintAndLog(" PSK CF: %u | %s", PSKcf, cf);
PrintAndLog(" Delay: %u | %s", delay, cdelay);
- PrintAndLog(" LastWordR: %02u | Address of last default word read", LWR);
- PrintAndLog(" ReadLogin: %u | Read Login is %s", (wordData & 0x40000)>>18, (wordData & 0x40000) ? "Required" : "Not Required");
- PrintAndLog(" ReadHKL: %u | Read Housekeeping Words Login is %s", (wordData & 0x80000)>>19, (wordData & 0x80000) ? "Required" : "Not Required");
- PrintAndLog("WriteLogin: %u | Write Login is %s", (wordData & 0x100000)>>20, (wordData & 0x100000) ? "Required" : "Not Required");
- PrintAndLog(" WriteHKL: %u | Write Housekeeping Words Login is %s", (wordData & 0x200000)>>21, (wordData & 0x200000) ? "Required" : "Not Required");
- PrintAndLog(" R.A.W.: %u | Read After Write is %s", (wordData & 0x400000)>>22, (wordData & 0x400000) ? "On" : "Off");
- PrintAndLog(" Disable: %u | Disable Command is %s", (wordData & 0x800000)>>23, (wordData & 0x800000) ? "Accepted" : "Not Accepted");
- PrintAndLog(" R.T.F.: %u | Reader Talk First is %s", (wordData & 0x1000000)>>24, (wordData & 0x1000000) ? "Enabled" : "Disabled");
- PrintAndLog(" Pigeon: %u | Pigeon Mode is %s\n", (wordData & 0x4000000)>>26, (wordData & 0x4000000) ? "Enabled" : "Disabled");
+ 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(" 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");
+ PrintAndLog(" Pigeon: %u | Pigeon Mode is %s\n", pigeon, pigeon ? "Enabled" : "Disabled");
}
void printEM4x05info(uint8_t chipType, uint8_t cap, uint16_t custCode, uint32_t serial) {
}
}
+void printEM4x05ProtectionBits(uint32_t wordData) {
+ for (uint8_t i = 0; i < 15; i++) {
+ PrintAndLog(" Word: %02u | %s", i, (((1 << i) & wordData ) || i < 2) ? "Is Write Locked" : "Is Not Write Locked");
+ if (i==14) {
+ PrintAndLog(" Word: %02u | %s", i+1, (((1 << i) & wordData ) || i < 2) ? "Is Write Locked" : "Is Not Write Locked");
+ }
+ }
+}
+
//quick test for EM4x05/EM4x69 tag
bool EM4x05Block0Test(uint32_t *wordData) {
if (EM4x05ReadWord_ext(0,0,false,wordData) == 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;
}
// 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 ) {
//failed
+ PrintAndLog("Config block read failed - might be password protected.");
return 0;
}
printEM4x05config(wordData);
+
+ // read word 14 and 15 to see which is being used for the protection bits
+ wordData = 0;
+ if ( EM4x05ReadWord_ext(14, pwd, usePwd, &wordData) != 1 ) {
+ //failed
+ return 0;
+ }
+ // if status bit says this is not the used protection word
+ if (!(wordData & 0x8000)) {
+ if ( EM4x05ReadWord_ext(15, pwd, usePwd, &wordData) != 1 ) {
+ //failed
+ return 0;
+ }
+ }
+ if (!(wordData & 0x8000)) {
+ //something went wrong
+ return 0;
+ }
+ printEM4x05ProtectionBits(wordData);
+
return 1;
}
static command_t CommandTable[] =
{
- {"help", CmdHelp, 1, "This help"},
- {"410xdemod", CmdEMdemodASK, 0, "[findone] -- Extract ID from EM410x tag (option 0 for continuous loop, 1 for only 1 tag)"},
- {"410xread", CmdEM410xRead, 1, "[clock rate] -- Extract ID from EM410x tag in GraphBuffer"},
- {"410xsim", CmdEM410xSim, 0, "<UID> [clock rate] -- Simulate EM410x tag"},
+ {"help", CmdHelp, 1, "This help"},
+ {"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"},
- {"4x05dump", CmdEM4x05dump, 0, "(pwd) -- Read EM4x05/EM4x69 all word data"},
- {"4x05info", CmdEM4x05info, 0, "(pwd) -- Get info from EM4x05/EM4x69 tag"},
- {"4x05readword", CmdEM4x05ReadWord, 0, "<Word> (pwd) -- Read EM4x05/EM4x69 word data"},
+ {"4x05dump", CmdEM4x05dump, 0, "(pwd) -- Read EM4x05/EM4x69 all word data"},
+ {"4x05info", CmdEM4x05info, 0, "(pwd) -- Get info from EM4x05/EM4x69 tag"},
+ {"4x05readword", CmdEM4x05ReadWord, 0, "<Word> (pwd) -- Read EM4x05/EM4x69 word data"},
{"4x05writeword", CmdEM4x05WriteWord, 0, "<Word> <data> (pwd) -- Write EM4x05/EM4x69 word data"},
- {"4x50read", CmdEM4x50Read, 1, "demod data from EM4x50 tag from the graph buffer"},
+ {"4x50read", CmdEM4x50Read, 1, "demod data from EM4x50 tag from the graph buffer"},
{NULL, NULL, 0, NULL}
};
projects / proxmark3-svn / blobdiff