// Low frequency Hitag support
//-----------------------------------------------------------------------------
+#include "cmdlfhitag.h"
+
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
-#include "data.h"
-#include "proxusb.h"
+#include "comms.h"
#include "ui.h"
#include "cmdparser.h"
#include "common.h"
#include "util.h"
-#include "hitag2.h"
+#include "parity.h"
+#include "hitag.h"
+#include "cmdmain.h"
-static int CmdHelp(const char *Cmd);
+static size_t nbytes(size_t nbits) {
+ return (nbits/8) + ((nbits%8)>0);
+}
-int CmdLFHitagList(const char *Cmd)
-{
- uint8_t got[3000];
- GetFromBigBuf(got,sizeof(got),0);
-
- PrintAndLog("recorded activity:");
- PrintAndLog(" ETU :rssi: who bytes");
- PrintAndLog("---------+----+----+-----------");
-
- int i = 0;
- int prev = -1;
-
- for (;;) {
- if(i >= 1900) {
- break;
- }
-
- bool isResponse;
- int timestamp = *((uint32_t *)(got+i));
- if (timestamp & 0x80000000) {
- timestamp &= 0x7fffffff;
- isResponse = 1;
- } else {
- isResponse = 0;
- }
-
- int metric = 0;
- int parityBits = *((uint32_t *)(got+i+4));
- // 4 bytes of additional information...
- // maximum of 32 additional parity bit information
- //
- // TODO:
- // at each quarter bit period we can send power level (16 levels)
- // or each half bit period in 256 levels.
-
- int len = got[i+8];
-
- if (len > 100) {
- break;
- }
- if (i + len >= 1900) {
- break;
- }
-
- uint8_t *frame = (got+i+9);
-
- // Break and stick with current result if buffer was not completely full
- if (frame[0] == 0x44 && frame[1] == 0x44 && frame[3] == 0x44) { break; }
-
- char line[1000] = "";
- int j;
- for (j = 0; j < len; j++) {
- int oddparity = 0x01;
- int k;
-
- for (k=0;k<8;k++) {
- oddparity ^= (((frame[j] & 0xFF) >> k) & 0x01);
- }
-
- //if((parityBits >> (len - j - 1)) & 0x01) {
- if (isResponse && (oddparity != ((parityBits >> (len - j - 1)) & 0x01))) {
- sprintf(line+(j*4), "%02x! ", frame[j]);
- }
- else {
- sprintf(line+(j*4), "%02x ", frame[j]);
- }
- }
-
- char metricString[100];
- if (isResponse) {
- sprintf(metricString, "%3d", metric);
- } else {
- strcpy(metricString, " ");
- }
-
- PrintAndLog(" +%7d: %s: %s %s",
- (prev < 0 ? 0 : (timestamp - prev)),
- metricString,
- (isResponse ? "TAG" : " "),
- line);
-
- prev = timestamp;
- i += (len + 9);
- }
+
+static int CmdLFHitagList(const char *Cmd) {
+ uint8_t *got = malloc(USB_CMD_DATA_SIZE);
+ // Query for the actual size of the trace
+ UsbCommand response;
+ GetFromBigBuf(got, USB_CMD_DATA_SIZE, 0, &response, -1, false);
+ uint16_t traceLen = response.arg[2];
+ if (traceLen > USB_CMD_DATA_SIZE) {
+ uint8_t *p = realloc(got, traceLen);
+ if (p == NULL) {
+ PrintAndLog("Cannot allocate memory for trace");
+ free(got);
+ return 2;
+ }
+ got = p;
+ GetFromBigBuf(got, traceLen, 0, NULL, -1, false);
+ }
+
+ PrintAndLog("recorded activity (TraceLen = %d bytes):");
+ PrintAndLog(" ETU :nbits: who bytes");
+ PrintAndLog("---------+-----+----+-----------");
+
+ int j;
+ int i = 0;
+ int prev = -1;
+ int len = strlen(Cmd);
+
+ char filename[FILE_PATH_SIZE] = { 0x00 };
+ FILE* pf = NULL;
+
+ if (len > FILE_PATH_SIZE)
+ len = FILE_PATH_SIZE;
+ memcpy(filename, Cmd, len);
+
+ if (strlen(filename) > 0) {
+ if ((pf = fopen(filename,"wb")) == NULL) {
+ PrintAndLog("Error: Could not open file [%s]",filename);
+ free(got);
+ return 1;
+ }
+ }
+
+ for (;;) {
+
+ if(i >= traceLen) { break; }
+
+ bool isResponse;
+ int timestamp = *((uint32_t *)(got+i));
+ if (timestamp & 0x80000000) {
+ timestamp &= 0x7fffffff;
+ isResponse = 1;
+ } else {
+ isResponse = 0;
+ }
+
+ int parityBits = *((uint32_t *)(got+i+4));
+ // 4 bytes of additional information...
+ // maximum of 32 additional parity bit information
+ //
+ // TODO:
+ // at each quarter bit period we can send power level (16 levels)
+ // or each half bit period in 256 levels.
+
+ int bits = got[i+8];
+ int len = nbytes(bits);
+
+ if (len > 100) {
+ break;
+ }
+ if (i + len > traceLen) { break;}
+
+ uint8_t *frame = (got+i+9);
+/*
+ int fillupBits = 8 - (bits % 8);
+ byte_t framefilled[bits+fillupBits];
+ byte_t* ff = framefilled;
+
+ int response_bit[200] = {0};
+ int z = 0;
+ for (int y = 0; y < len; y++) {
+ for (j = 0; j < 8; j++) {
+ response_bit[z] = 0;
+ if ((frame[y] & ((mask << 7) >> j)) != 0)
+ response_bit[z] = 1;
+ z++;
+ }
+ }
+ z = 0;
+ for (int y = 0; y < len; y++) {
+ ff[y] = (response_bit[z] << 7) | (response_bit[z + 1] << 6)
+ | (response_bit[z + 2] << 5) | (response_bit[z + 3] << 4)
+ | (response_bit[z + 4] << 3) | (response_bit[z + 5] << 2)
+ | (response_bit[z + 6] << 1) | response_bit[z + 7];
+ z += 8;
+ }
+*/
+
+
+
+
+ // Break and stick with current result if buffer was not completely full
+ if (frame[0] == 0x44 && frame[1] == 0x44 && frame[3] == 0x44) { break; }
+
+ char line[1000] = "";
+ for (j = 0; j < len; j++) {
+ //if((parityBits >> (len - j - 1)) & 0x01) {
+ if (isResponse && (oddparity8(frame[j]) != ((parityBits >> (len - j - 1)) & 0x01))) {
+ sprintf(line+(j*4), "%02x! ", frame[j]);
+ } else {
+ sprintf(line+(j*4), "%02x ", frame[j]);
+ }
+ }
+
+ PrintAndLog(" +%7d: %3d: %s %s",
+ (prev < 0 ? 0 : (timestamp - prev)),
+ bits,
+ (isResponse ? "TAG" : " "),
+ line);
+
+ if (pf) {
+ fprintf(pf," +%7d: %3d: %s %s\n",
+ (prev < 0 ? 0 : (timestamp - prev)),
+ bits,
+ (isResponse ? "TAG" : " "),
+ line);
+ }
+
+ prev = timestamp;
+ i += (len + 9);
+ }
+
+ if (pf) {
+ fclose(pf);
+ PrintAndLog("Recorded activity succesfully written to file: %s", filename);
+ }
+
+ free(got);
return 0;
}
-int CmdLFHitagSnoop(const char *Cmd) {
- UsbCommand c = {CMD_SNOOP_HITAG};
- SendCommand(&c);
- return 0;
+
+static int CmdLFHitagSnoop(const char *Cmd) {
+ UsbCommand c = {CMD_SNOOP_HITAG};
+ SendCommand(&c);
+ return 0;
}
-int CmdLFHitagSim(const char *Cmd) {
- UsbCommand c = {CMD_SIMULATE_HITAG};
- char filename[256];
+
+static int CmdLFHitagSim(const char *Cmd) {
+
+ UsbCommand c = {CMD_SIMULATE_HITAG};
+ char filename[FILE_PATH_SIZE] = { 0x00 };
FILE* pf;
bool tag_mem_supplied;
+ int len = strlen(Cmd);
+ if (len > FILE_PATH_SIZE) len = FILE_PATH_SIZE;
+ memcpy(filename, Cmd, len);
- param_getstr(Cmd,0,filename);
-
if (strlen(filename) > 0) {
if ((pf = fopen(filename,"rb+")) == NULL) {
PrintAndLog("Error: Could not open file [%s]",filename);
return 1;
}
tag_mem_supplied = true;
- fread(c.d.asBytes,48,1,pf);
+ if (fread(c.d.asBytes,1,48,pf) != 48) {
+ PrintAndLog("Error: File reading error");
+ fclose(pf);
+ return 1;
+ }
fclose(pf);
} else {
tag_mem_supplied = false;
}
-
+
// Does the tag comes with memory
c.arg[0] = (uint32_t)tag_mem_supplied;
- SendCommand(&c);
- return 0;
+ SendCommand(&c);
+ return 0;
}
-int CmdLFHitagReader(const char *Cmd) {
-// UsbCommand c = {CMD_READER_HITAG};
+
+bool getHitagUid(uint32_t *uid, bool quiet) {
+ // ToDo: this is for Hitag2 only (??)
-// param_get32ex(Cmd,1,0,16);
- UsbCommand c = {CMD_READER_HITAG};//, {param_get32ex(Cmd,0,0,10),param_get32ex(Cmd,1,0,16),param_get32ex(Cmd,2,0,16),param_get32ex(Cmd,3,0,16)}};
+ UsbCommand c = {CMD_READER_HITAG, {RHT2F_UID_ONLY}};
+
+ SendCommand(&c);
+
+ UsbCommand resp;
+ if (!WaitForResponseTimeout(CMD_ACK, &resp, 2500)) {
+ if (!quiet) PrintAndLogEx(WARNING, "timeout while waiting for reply.");
+ return false;
+ }
+
+ if (resp.arg[0] == false) {
+ if (!quiet) PrintAndLogEx(DEBUG, "DEBUG: Error - failed getting UID");
+ return false;
+ }
+
+ if (uid)
+ *uid = bytes_to_num(resp.d.asBytes, 4);
+
+ return true;
+}
+
+
+static int CmdLFHitagInfo(const char *Cmd) {
+ char ctmp = param_getchar(Cmd, 0);
+ if (ctmp != '\0') {
+ PrintAndLog("Usage: lf hitag info [h]");
+ PrintAndLog("Options:");
+ PrintAndLog(" h This help");
+ PrintAndLog("Examples:");
+ PrintAndLog(" lf hitag info");
+ return 0;
+ }
+
+ // read UID
+ uint32_t uid = 0;
+ if (getHitagUid(&uid, false) == false)
+ return 1;
+
+ PrintAndLogEx(SUCCESS, "UID: %08X", uid);
+
+ // how to detemine Hitag types?
+ // read block3, get configuration byte.
+ // PrintAndLogEx(FAILED, _RED_("TODO: This is a hardcoded example!"));
+
+ // common configurations.
+ // printHitagConfiguration(0x06);
+ //printHitagConfiguration( 0x0E );
+ //printHitagConfiguration( 0x02 );
+ //printHitagConfiguration( 0x00 );
+ //printHitagConfiguration( 0x04 );
+ return 0;
+}
+
+
+int CmdLFHitagReader(const char *Cmd) {
+ UsbCommand c = {CMD_READER_HITAG};
hitag_data* htd = (hitag_data*)c.d.asBytes;
- hitag_function htf = param_get32ex(Cmd,0,0,10);
-
+ hitag_function htf = param_get32ex(Cmd, 0, 0, 10);
+
switch (htf) {
+ case RHTSF_CHALLENGE: {
+ c = (UsbCommand){ CMD_READ_HITAG_S };
+ num_to_bytes(param_get32ex(Cmd, 1, 0, 16), 4, htd->auth.NrAr);
+ num_to_bytes(param_get32ex(Cmd, 2, 0, 16), 4, htd->auth.NrAr+4);
+ c.arg[1] = param_get64ex(Cmd, 3, 0, 0); //firstpage
+ c.arg[2] = param_get64ex(Cmd, 4, 0, 0); //tag mode
+ } break;
+ case RHTSF_KEY: {
+ c = (UsbCommand){ CMD_READ_HITAG_S };
+ num_to_bytes(param_get64ex(Cmd, 1, 0, 16), 6, htd->crypto.key);
+ c.arg[1] = param_get64ex(Cmd, 2, 0, 0); //firstpage
+ c.arg[2] = param_get64ex(Cmd, 3, 0, 0); //tag mode
+ } break;
case RHT2F_PASSWORD: {
- num_to_bytes(param_get32ex(Cmd,1,0,16),4,htd->pwd.password);
+ num_to_bytes(param_get32ex(Cmd, 1, 0, 16), 4, htd->pwd.password);
} break;
case RHT2F_AUTHENTICATE: {
- num_to_bytes(param_get32ex(Cmd,1,0,16),4,htd->auth.NrAr);
- num_to_bytes(param_get32ex(Cmd,2,0,16),4,htd->auth.NrAr+4);
+ num_to_bytes(param_get32ex(Cmd, 1, 0, 16), 4, htd->auth.NrAr);
+ num_to_bytes(param_get32ex(Cmd, 2, 0, 16), 4, htd->auth.NrAr+4);
+ } break;
+ case RHT2F_CRYPTO: {
+ num_to_bytes(param_get64ex(Cmd, 1, 0, 16), 6, htd->crypto.key);
+ // num_to_bytes(param_get32ex(Cmd,2,0,16),4,htd->auth.NrAr+4);
} break;
case RHT2F_TEST_AUTH_ATTEMPTS: {
// No additional parameters needed
} break;
+ case RHT2F_UID_ONLY: {
+ // No additional parameters needed
+ } break;
default: {
- PrintAndLog("Error: unkown reader function %d",htf);
- PrintAndLog("Hitag reader functions",htf);
- PrintAndLog(" HitagS (0*)",htf);
- PrintAndLog(" Hitag1 (1*)",htf);
- PrintAndLog(" Hitag2 (2*)",htf);
- PrintAndLog(" 21 <password> (password mode)",htf);
- PrintAndLog(" 22 <nr> <ar> (authentication)",htf);
- PrintAndLog(" 25 (test recorded authentications)",htf);
+ PrintAndLog("\nError: unkown reader function %d",htf);
+ PrintAndLog("");
+ PrintAndLog("Usage: hitag reader <Reader Function #>");
+ PrintAndLog("Reader Functions:");
+ PrintAndLog(" HitagS (0*):");
+ PrintAndLog(" 01 <nr> <ar> (Challenge) <firstPage> <tagmode> read all pages from a Hitag S tag");
+ PrintAndLog(" 02 <key> (set to 0 if no authentication is needed) <firstPage> <tagmode> read all pages from a Hitag S tag");
+ PrintAndLog(" Valid tagmodes are 0=STANDARD, 1=ADVANCED, 2=FAST_ADVANCED (default is ADVANCED)");
+ PrintAndLog(" Hitag1 (1*):");
+ PrintAndLog(" (not yet implemented)");
+ PrintAndLog(" Hitag2 (2*):");
+ PrintAndLog(" 21 <password> (password mode)");
+ PrintAndLog(" 22 <nr> <ar> (authentication)");
+ PrintAndLog(" 23 <key> (authentication) key is in format: ISK high + ISK low");
+ PrintAndLog(" 25 (test recorded authentications)");
+ PrintAndLog(" 26 just read UID");
return 1;
} break;
}
// Copy the hitag2 function into the first argument
c.arg[0] = htf;
- SendCommand(&c);
- return 0;
+ // Send the command to the proxmark
+ clearCommandBuffer();
+ SendCommand(&c);
+
+ UsbCommand resp;
+ if (!WaitForResponseTimeout(CMD_ACK, &resp, 4000)) {
+ PrintAndLogEx(WARNING, "timeout while waiting for reply.");
+ return 1;
+ }
+
+ // Check the return status, stored in the first argument
+ if (resp.arg[0] == false) {
+ PrintAndLogEx(DEBUG, "DEBUG: Error - hitag failed");
+ return 1;
+ }
+
+ uint32_t id = bytes_to_num(resp.d.asBytes, 4);
+
+ PrintAndLog("Valid Hitag2 tag found - UID: %08x", id);
+ if (htf != RHT2F_UID_ONLY) {
+ PrintAndLogEx(SUCCESS, "Dumping tag memory...");
+ char filename[256];
+ FILE* pf = NULL;
+
+ sprintf(filename,"%08x_%04x.ht2",id,(rand() & 0xffff));
+ if ((pf = fopen(filename,"wb")) == NULL) {
+ PrintAndLog("Error: Could not open file [%s]",filename);
+ return 1;
+ }
+
+ // Write the 48 tag memory bytes to file and finalize
+ fwrite(resp.d.asBytes,1,48,pf);
+ fclose(pf);
+
+ PrintAndLog("Succesfully saved tag memory to [%s]",filename);
+ }
+
+ return 0;
+}
+
+
+static int CmdLFHitagSimS(const char *Cmd) {
+ UsbCommand c = { CMD_SIMULATE_HITAG_S };
+ char filename[FILE_PATH_SIZE] = { 0x00 };
+ FILE* pf;
+ bool tag_mem_supplied;
+ int len = strlen(Cmd);
+ if (len > FILE_PATH_SIZE)
+ len = FILE_PATH_SIZE;
+ memcpy(filename, Cmd, len);
+
+ if (strlen(filename) > 0) {
+ if ((pf = fopen(filename, "rb+")) == NULL) {
+ PrintAndLog("Error: Could not open file [%s]", filename);
+ return 1;
+ }
+ tag_mem_supplied = true;
+ if (fread(c.d.asBytes, 1, 4*64, pf) != 4*64) {
+ PrintAndLog("Error: File reading error");
+ fclose(pf);
+ return 1;
+ }
+ fclose(pf);
+ } else {
+ tag_mem_supplied = false;
+ }
+
+ // Does the tag comes with memory
+ c.arg[0] = (uint32_t) tag_mem_supplied;
+
+ SendCommand(&c);
+ return 0;
+}
+
+
+static int CmdLFHitagCheckChallenges(const char *Cmd) {
+ UsbCommand c = { CMD_TEST_HITAGS_TRACES };
+ char filename[FILE_PATH_SIZE] = { 0x00 };
+ FILE* pf;
+ bool file_given;
+ int len = strlen(Cmd);
+ if (len > FILE_PATH_SIZE) len = FILE_PATH_SIZE;
+ memcpy(filename, Cmd, len);
+
+ if (strlen(filename) > 0) {
+ if ((pf = fopen(filename,"rb+")) == NULL) {
+ PrintAndLog("Error: Could not open file [%s]",filename);
+ return 1;
+ }
+ file_given = true;
+ if (fread(c.d.asBytes,1,8*60,pf) != 8*60) {
+ PrintAndLog("Error: File reading error");
+ fclose(pf);
+ return 1;
+ }
+ fclose(pf);
+ } else {
+ file_given = false;
+ }
+
+ //file with all the challenges to try
+ c.arg[0] = (uint32_t)file_given;
+ c.arg[1] = param_get64ex(Cmd,2,0,0); //get mode
+
+ SendCommand(&c);
+ return 0;
+}
+
+
+static int CmdLFHitagWriter(const char *Cmd) {
+ UsbCommand c = { CMD_WR_HITAG_S };
+ hitag_data* htd = (hitag_data*)c.d.asBytes;
+ hitag_function htf = param_get32ex(Cmd,0,0,10);
+ switch (htf) {
+ case WHTSF_CHALLENGE: {
+ num_to_bytes(param_get64ex(Cmd,1,0,16),8,htd->auth.NrAr);
+ c.arg[2]= param_get32ex(Cmd, 2, 0, 10);
+ num_to_bytes(param_get32ex(Cmd,3,0,16),4,htd->auth.data);
+ } break;
+ case WHTSF_KEY:
+ case WHT2F_CRYPTO: {
+ num_to_bytes(param_get64ex(Cmd,1,0,16),6,htd->crypto.key);
+ c.arg[2]= param_get32ex(Cmd, 2, 0, 10);
+ num_to_bytes(param_get32ex(Cmd,3,0,16),4,htd->crypto.data);
+ } break;
+ case WHT2F_PASSWORD: {
+ num_to_bytes(param_get64ex(Cmd, 1, 0, 16), 4, htd->pwd.password);
+ c.arg[2] = param_get32ex(Cmd, 2, 0, 10);
+ num_to_bytes(param_get32ex(Cmd, 3, 0, 16), 4, htd->crypto.data);
+ } break;
+ default: {
+ PrintAndLog("Error: unkown writer function %d",htf);
+ PrintAndLog("Hitag writer functions");
+ PrintAndLog(" HitagS (0*):");
+ PrintAndLog(" 03 <nr,ar> (Challenge) <page> <byte0...byte3> write page on a Hitag S tag");
+ PrintAndLog(" 04 <key> (set to 0 if no authentication is needed) <page> <byte0...byte3> write page on a Hitag S tag");
+ PrintAndLog(" Hitag1 (1*)");
+ PrintAndLog(" (not yet implemented)");
+ PrintAndLog(" Hitag2 (2*):");
+ PrintAndLog(" 24 <key> (set to 0 if no authentication is needed) <page> <byte0...byte3> write page on a Hitag S tag");
+ PrintAndLog(" 27 <password> <page> <byte0...byte3> write page on a Hitag2 tag");
+ return 1;
+ } break;
+ }
+ // Copy the hitag function into the first argument
+ c.arg[0] = htf;
+
+ // Send the command to the proxmark
+ SendCommand(&c);
+
+ UsbCommand resp;
+ if (!WaitForResponseTimeout(CMD_ACK, &resp, 4000)) {
+ PrintAndLogEx(WARNING, "timeout while waiting for reply.");
+ return 1;
+ }
+
+ // Check the return status, stored in the first argument
+ if (resp.arg[0] == false) {
+ PrintAndLogEx(DEBUG, "DEBUG: Error - hitag write failed");
+ return 1;
+ }
+ return 0;
}
-static command_t CommandTableHitag[] =
+
+static int CmdHelp(const char *Cmd);
+
+static command_t CommandTable[] =
{
- {"help", CmdHelp, 1, "This help"},
- {"list", CmdLFHitagList, 1, "List Hitag trace history"},
- {"reader", CmdLFHitagReader, 1, "Act like a Hitag Reader"},
- {"sim", CmdLFHitagSim, 1, "Simulate Hitag transponder"},
- {"snoop", CmdLFHitagSnoop, 1, "Eavesdrop Hitag communication"},
- {NULL, NULL, 0, NULL}
+ {"help", CmdHelp, 1, "This help"},
+ {"list", CmdLFHitagList, 0, "<outfile> List Hitag trace history"},
+ {"info", CmdLFHitagInfo, 0, "Tag information" },
+ {"reader", CmdLFHitagReader, 0, "Act like a Hitag Reader"},
+ {"sim", CmdLFHitagSim, 0, "Simulate Hitag transponder"},
+ {"snoop", CmdLFHitagSnoop, 0, "Eavesdrop Hitag communication"},
+ {"writer", CmdLFHitagWriter, 0, "Act like a Hitag Writer" },
+ {"simS", CmdLFHitagSimS, 0, "Simulate HitagS transponder" },
+ {"checkChallenges", CmdLFHitagCheckChallenges, 0, "Test challenges from a file" },
+ { NULL, NULL, 0, NULL }
};
-int CmdLFHitag(const char *Cmd)
-{
- CmdsParse(CommandTableHitag, Cmd);
- return 0;
+
+static int CmdHelp(const char *Cmd) {
+ CmdsHelp(CommandTable);
+ return 0;
}
-int CmdHelp(const char *Cmd)
-{
- CmdsHelp(CommandTableHitag);
- return 0;
+
+int CmdLFHitag(const char *Cmd) {
+ CmdsParse(CommandTable, Cmd);
+ return 0;
}
projects / proxmark3-svn / blobdiff