From: root <root@localhost.localdomain>
Date: Sat, 1 Jul 2017 15:53:06 +0000 (+0200)
Subject: EM410x bruteforcing changes: Load the whole file at once, pause delay as parameter...
X-Git-Tag: v3.1.0~196^2~7
X-Git-Url: http://cvs.zerfleddert.de/cgi-bin/gitweb.cgi/proxmark3-svn/commitdiff_plain/539337a7d2daca5918de38060c3caf7d08b5c3e6?ds=inline;hp=-c
EM410x bruteforcing changes: Load the whole file at once, pause delay as parameter, stop the execution on key press and EM410x conversion to signal function.
---
539337a7d2daca5918de38060c3caf7d08b5c3e6
diff --git a/client/cmdlfem4x.c b/client/cmdlfem4x.c
index 167042d7..04308bc0 100644
--- a/client/cmdlfem4x.c
+++ b/client/cmdlfem4x.c
@@ -28,6 +28,7 @@
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)
{
@@ -217,11 +218,54 @@ int usage_lf_em410x_sim(void) {
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};
@@ -238,48 +282,8 @@ int CmdEM410xSim(const char *Cmd)
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 abort simulation");
-
- /* 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(&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);
-
+ ConstructEM410xEmulGraph(Cmd, clock);
+
CmdLFSim("0"); //240 start_gap.
return 0;
}
@@ -287,14 +291,16 @@ int CmdEM410xSim(const char *Cmd)
int usage_lf_em410x_brute(void) {
PrintAndLog("Bruteforcing by emulating EM410x tag");
PrintAndLog("");
- PrintAndLog("Usage: lf em 410xbrute [h] ids.txt");
+ PrintAndLog("Usage: lf em 410xbrute [h] ids.txt [d 2000] [clock]");
PrintAndLog("Options:");
- PrintAndLog(" h - this help");
- PrintAndLog(" ids.txt - file with id in HEX format one per line");
- PrintAndLog(" clock - clock (32|64) (optional)");
+ PrintAndLog(" h - this help");
+ PrintAndLog(" ids.txt - file with UIDs in HEX format one per line");
+ PrintAndLog(" d (2000) - pause delay in milliseonds between UIDs simulation, default 1000ms (optional)");
+ PrintAndLog(" clock - clock (32|64), default 64 (optional)");
PrintAndLog("samples:");
PrintAndLog(" lf em 410xbrute ids.txt");
PrintAndLog(" lf em 410xbrute ids.txt 32");
+ PrintAndLog(" lf em 410xbrute ids.txt d 3000 32");
return 0;
}
@@ -303,96 +309,113 @@ int CmdEM410xBrute(const char *Cmd)
char filename[FILE_PATH_SIZE]={0};
FILE *f = NULL;
char buf[11];
- int i, n, j, binary[4], parity[4];
-
- char cmdp = param_getchar(Cmd, 0);
+ uint32_t uidcnt = 0;
+ uint8_t stUidBlock = 20;
+ uint8_t *uidBlock = NULL, *p = NULL;
+ int ch;
uint8_t uid[5] = {0x00};
-
- 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);
+ /* default pause time: 1 second */
+ uint32_t delay = 1000;
+ char delaystr[32] = {0x00};
+
+ char cmdp = param_getchar(Cmd, 0);
+
+ if (cmdp == 'h' || cmdp == 'H') return usage_lf_em410x_brute();
+
+
+ cmdp = param_getchar(Cmd, 1);
+
+ if (cmdp == 'd' || cmdp == 'D') {
+ param_getstr(Cmd,2, delaystr);
+ if (strlen(delaystr) > 0) delay = (uint32_t) atoi(delaystr);
+ param_getdec(Cmd,3, &clock);
+ } else {
+ param_getdec(Cmd,1, &clock);
+ }
param_getstr(Cmd, 0, 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 IDs file [%s]",filename);
+ 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) ) {
- msleep(1000);
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;
- //PrintAndLog("ID: %s", buf);
-
- if (param_gethex(buf, 0, uid, 10)) {
- PrintAndLog("UID must include 10 HEX symbols");
- return 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;
}
-
- PrintAndLog("Starting simulating UID %02X%02X%02X%02X%02X clock: %d", uid[0],uid[1],uid[2],uid[3],uid[4],clock);
-
- /* 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(&buf[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];
+ 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;
}
-
- /* 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);
-
+
+ sprintf(testuid, "%010lX", 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.
- memset(buf, 0, sizeof(buf));
-
+ msleep(delay);
}
-
- fclose(f);
-
+
+ free(uidBlock);
return 0;
}
@@ -1316,7 +1339,7 @@ static command_t CommandTable[] =
{"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 [clock rate] -- Bruteforcing by simulating EM410x tags (1 UID/s)"},
+ {"410xbrute", CmdEM410xBrute, 0, "ids.txt [d (delay in ms)][clock rate] -- Bruteforcing by simulating EM410x tags (1 UID/s)"},
{"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"},
diff --git a/client/cmdlfem4x.h b/client/cmdlfem4x.h
index 869d72d0..c4c4c2b2 100644
--- a/client/cmdlfem4x.h
+++ b/client/cmdlfem4x.h
@@ -21,6 +21,7 @@ extern int CmdAskEM410xDemod(const char *Cmd);
extern int AskEm410xDecode(bool verbose, uint32_t *hi, uint64_t *lo );
extern int AskEm410xDemod(const char *Cmd, uint32_t *hi, uint64_t *lo, bool verbose);
extern int CmdEM410xSim(const char *Cmd);
+extern int CmdEM410xBrute(const char *Cmd);
extern int CmdEM410xWatch(const char *Cmd);
extern int CmdEM410xWatchnSpoof(const char *Cmd);
extern int CmdEM410xWrite(const char *Cmd);