//-----------------------------------------------------------------------------
// Copyright (C) 2010 iZsh <izsh at fail0verflow.com>, Hagen Fritsch
// Copyright (C) 2011 Gerhard de Koning Gans
+// Copyright (C) 2014 Midnitesnake & Andy Davies & Martin Holst Swende
//
// 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
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
+#include <sys/stat.h>
#include "iso14443crc.h" // Can also be used for iClass, using 0xE012 as CRC-type
#include "data.h"
-#include "proxusb.h"
+#include "proxmark3.h"
#include "ui.h"
#include "cmdparser.h"
#include "cmdhficlass.h"
#include "common.h"
#include "util.h"
+#include "cmdmain.h"
+#include "loclass/des.h"
+#include "loclass/cipherutils.h"
+#include "loclass/cipher.h"
+#include "loclass/ikeys.h"
+#include "loclass/elite_crack.h"
+#include "loclass/fileutils.h"
+#include "protocols.h"
+#include "usb_cmd.h"
static int CmdHelp(const char *Cmd);
+int xorbits_8(uint8_t val)
+{
+ uint8_t res = val ^ (val >> 1); //1st pass
+ res = res ^ (res >> 1); // 2nd pass
+ res = res ^ (res >> 2); // 3rd pass
+ res = res ^ (res >> 4); // 4th pass
+ return res & 1;
+}
+
int CmdHFiClassList(const char *Cmd)
{
- uint8_t got[1920];
- 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 *crc;
- crc = "";
- if (len > 2) {
- uint8_t b1, b2;
- for (j = 0; j < (len - 1); j++) {
- // gives problems... search for the reason..
- /*if(frame[j] == 0xAA) {
- switch(frame[j+1]) {
- case 0x01:
- crc = "[1] Two drops close after each other";
- break;
- case 0x02:
- crc = "[2] Potential SOC with a drop in second half of bitperiod";
- break;
- case 0x03:
- crc = "[3] Segment Z after segment X is not possible";
- break;
- case 0x04:
- crc = "[4] Parity bit of a fully received byte was wrong";
- break;
- default:
- crc = "[?] Unknown error";
- break;
- }
- break;
- }*/
- }
-
- if (strlen(crc)==0) {
- if(!isResponse && len == 4) {
- // Rough guess that this is a command from the reader
- // For iClass the command byte is not part of the CRC
- ComputeCrc14443(CRC_ICLASS, &frame[1], len-3, &b1, &b2);
- }
- else {
- // For other data.. CRC might not be applicable (UPDATE commands etc.)
- ComputeCrc14443(CRC_ICLASS, frame, len-2, &b1, &b2);
- }
- //printf("%1x %1x",(unsigned)b1,(unsigned)b2);
- if (b1 != frame[len-2] || b2 != frame[len-1]) {
- crc = (isResponse & (len < 8)) ? "" : " !crc";
- } else {
- crc = "";
- }
- }
- } else {
- crc = ""; // SHORT
- }
-
- char metricString[100];
- if (isResponse) {
- sprintf(metricString, "%3d", metric);
- } else {
- strcpy(metricString, " ");
- }
-
- PrintAndLog(" +%7d: %s: %s %s %s",
- (prev < 0 ? 0 : (timestamp - prev)),
- metricString,
- (isResponse ? "TAG" : " "), line, crc);
-
- prev = timestamp;
- i += (len + 9);
- }
- return 0;
-}
-
-/*void iso14a_set_timeout(uint32_t timeout) {
- UsbCommand c = {CMD_READER_ISO_14443a, {ISO14A_SET_TIMEOUT, 0, timeout}};
- SendCommand(&c);
-}*/
+ PrintAndLog("Deprecated command, use 'hf list iclass' instead");
+ return 0;
+}
int CmdHFiClassSnoop(const char *Cmd)
{
- UsbCommand c = {CMD_SNOOP_ICLASS};
- SendCommand(&c);
- return 0;
+ UsbCommand c = {CMD_SNOOP_ICLASS};
+ SendCommand(&c);
+ return 0;
+}
+int usage_hf_iclass_sim()
+{
+ PrintAndLog("Usage: hf iclass sim <option> [CSN]");
+ PrintAndLog(" options");
+ PrintAndLog(" 0 <CSN> simulate the given CSN");
+ PrintAndLog(" 1 simulate default CSN");
+ PrintAndLog(" 2 Reader-attack, gather reader responses to extract elite key");
+ PrintAndLog(" 3 Full simulation using emulator memory (see 'hf iclass eload')");
+ PrintAndLog(" example: hf iclass sim 0 031FEC8AF7FF12E0");
+ PrintAndLog(" example: hf iclass sim 2");
+ PrintAndLog(" example: hf iclass eload 'tagdump.bin'");
+ PrintAndLog(" hf iclass sim 3");
+ return 0;
}
+#define NUM_CSNS 15
int CmdHFiClassSim(const char *Cmd)
{
- uint8_t simType = 0;
- uint8_t CSN[8] = {0, 0, 0, 0, 0, 0, 0, 0};
+ uint8_t simType = 0;
+ uint8_t CSN[8] = {0, 0, 0, 0, 0, 0, 0, 0};
- if (strlen(Cmd)<2) {
- PrintAndLog("Usage: hf iclass sim <sim type> <CSN (16 hex symbols)>");
- PrintAndLog(" sample: hf iclass sim 0 031FEC8AF7FF12E0");
- return 0;
- }
+ if (strlen(Cmd)<1) {
+ return usage_hf_iclass_sim();
+ }
+ simType = param_get8ex(Cmd, 0, 0, 10);
- simType = param_get8(Cmd, 0);
- if (param_gethex(Cmd, 1, CSN, 16)) {
- PrintAndLog("A CSN should consist of 16 HEX symbols");
- return 1;
- }
- PrintAndLog("--simtype:%02x csn:%s", simType, sprint_hex(CSN, 8));
+ if(simType == 0)
+ {
+ if (param_gethex(Cmd, 1, CSN, 16)) {
+ PrintAndLog("A CSN should consist of 16 HEX symbols");
+ return usage_hf_iclass_sim();
+ }
- UsbCommand c = {CMD_SIMULATE_TAG_ICLASS, {simType}};
- memcpy(c.d.asBytes, CSN, 8);
- SendCommand(&c);
+ PrintAndLog("--simtype:%02x csn:%s", simType, sprint_hex(CSN, 8));
+ }
+ if(simType > 3)
+ {
+ PrintAndLog("Undefined simptype %d", simType);
+ return usage_hf_iclass_sim();
+ }
- /*UsbCommand * resp = WaitForResponseTimeout(CMD_ACK, 1500);
- if (resp != NULL) {
- uint8_t isOK = resp->arg[0] & 0xff;
- PrintAndLog("isOk:%02x", isOK);
- } else {
- PrintAndLog("Command execute timeout");
- }*/
+ uint8_t numberOfCSNs=0;
+ if(simType == 2)
+ {
+ UsbCommand c = {CMD_SIMULATE_TAG_ICLASS, {simType,NUM_CSNS}};
+ UsbCommand resp = {0};
+
+ uint8_t csns[8*NUM_CSNS] = {
+ 0x00, 0x0B, 0x0F, 0xFF, 0xF7, 0xFF, 0x12, 0xE0,
+ 0x00, 0x04, 0x0E, 0x08, 0xF7, 0xFF, 0x12, 0xE0,
+ 0x00, 0x09, 0x0D, 0x05, 0xF7, 0xFF, 0x12, 0xE0,
+ 0x00, 0x0A, 0x0C, 0x06, 0xF7, 0xFF, 0x12, 0xE0,
+ 0x00, 0x0F, 0x0B, 0x03, 0xF7, 0xFF, 0x12, 0xE0,
+ 0x00, 0x08, 0x0A, 0x0C, 0xF7, 0xFF, 0x12, 0xE0,
+ 0x00, 0x0D, 0x09, 0x09, 0xF7, 0xFF, 0x12, 0xE0,
+ 0x00, 0x0E, 0x08, 0x0A, 0xF7, 0xFF, 0x12, 0xE0,
+ 0x00, 0x03, 0x07, 0x17, 0xF7, 0xFF, 0x12, 0xE0,
+ 0x00, 0x3C, 0x06, 0xE0, 0xF7, 0xFF, 0x12, 0xE0,
+ 0x00, 0x01, 0x05, 0x1D, 0xF7, 0xFF, 0x12, 0xE0,
+ 0x00, 0x02, 0x04, 0x1E, 0xF7, 0xFF, 0x12, 0xE0,
+ 0x00, 0x07, 0x03, 0x1B, 0xF7, 0xFF, 0x12, 0xE0,
+ 0x00, 0x00, 0x02, 0x24, 0xF7, 0xFF, 0x12, 0xE0,
+ 0x00, 0x05, 0x01, 0x21, 0xF7, 0xFF, 0x12, 0xE0 };
+
+ memcpy(c.d.asBytes, csns, 8*NUM_CSNS);
+
+ SendCommand(&c);
+ if (!WaitForResponseTimeout(CMD_ACK, &resp, -1)) {
+ PrintAndLog("Command timed out");
+ return 0;
+ }
+
+ uint8_t num_mac_responses = resp.arg[1];
+ PrintAndLog("Mac responses: %d MACs obtained (should be %d)", num_mac_responses,NUM_CSNS);
+
+ size_t datalen = NUM_CSNS*24;
+ /*
+ * Now, time to dump to file. We'll use this format:
+ * <8-byte CSN><8-byte CC><4 byte NR><4 byte MAC>....
+ * So, it should wind up as
+ * 8 * 24 bytes.
+ *
+ * The returndata from the pm3 is on the following format
+ * <4 byte NR><4 byte MAC>
+ * CC are all zeroes, CSN is the same as was sent in
+ **/
+ void* dump = malloc(datalen);
+ memset(dump,0,datalen);//<-- Need zeroes for the CC-field
+ uint8_t i = 0;
+ for(i = 0 ; i < NUM_CSNS ; i++)
+ {
+ memcpy(dump+i*24, csns+i*8,8); //CSN
+ //8 zero bytes here...
+ //Then comes NR_MAC (eight bytes from the response)
+ memcpy(dump+i*24+16,resp.d.asBytes+i*8,8);
+
+ }
+ /** Now, save to dumpfile **/
+ saveFile("iclass_mac_attack", "bin", dump,datalen);
+ free(dump);
+ }else
+ {
+ UsbCommand c = {CMD_SIMULATE_TAG_ICLASS, {simType,numberOfCSNs}};
+ memcpy(c.d.asBytes, CSN, 8);
+ SendCommand(&c);
+ }
+
+ return 0;
+}
+
+int HFiClassReader(const char *Cmd, bool loop, bool verbose)
+{
+ bool tagFound = false;
+ UsbCommand c = {CMD_READER_ICLASS, {FLAG_ICLASS_READER_CSN|
+ FLAG_ICLASS_READER_CONF|FLAG_ICLASS_READER_AA}};
+ if (!loop) c.arg[0] |= FLAG_ICLASS_READER_ONLY_ONCE | FLAG_ICLASS_READER_ONE_TRY;
+ SendCommand(&c);
+ UsbCommand resp;
+ while(!ukbhit()){
+ if (WaitForResponseTimeout(CMD_ACK,&resp, 4500)) {
+ uint8_t readStatus = resp.arg[0] & 0xff;
+ uint8_t *data = resp.d.asBytes;
+
+ if (verbose)
+ PrintAndLog("Readstatus:%02x", readStatus);
+ if( readStatus == 0){
+ //Aborted
+ if (verbose) PrintAndLog("Quitting...");
+ return 0;
+ }
+ if( readStatus & FLAG_ICLASS_READER_CSN){
+ PrintAndLog("CSN: %s",sprint_hex(data,8));
+ tagFound = true;
+ }
+ if( readStatus & FLAG_ICLASS_READER_CC) PrintAndLog("CC: %s",sprint_hex(data+16,8));
+ if( readStatus & FLAG_ICLASS_READER_CONF){
+ printIclassDumpInfo(data);
+ }
+ if (tagFound && !loop) return 1;
+ } else {
+ if (verbose) PrintAndLog("Command execute timeout");
+ }
+ if (!loop) break;
+ }
+ return 0;
- return 0;
}
int CmdHFiClassReader(const char *Cmd)
{
- uint8_t readerType = 0;
+ return HFiClassReader(Cmd, true, true);
+}
+
+int CmdHFiClassReader_Replay(const char *Cmd)
+{
+ uint8_t readerType = 0;
+ uint8_t MAC[4]={0x00, 0x00, 0x00, 0x00};
+
+ if (strlen(Cmd)<1) {
+ PrintAndLog("Usage: hf iclass replay <MAC>");
+ PrintAndLog(" sample: hf iclass replay 00112233");
+ return 0;
+ }
+
+ if (param_gethex(Cmd, 0, MAC, 8)) {
+ PrintAndLog("MAC must include 8 HEX symbols");
+ return 1;
+ }
+
+ UsbCommand c = {CMD_READER_ICLASS_REPLAY, {readerType}};
+ memcpy(c.d.asBytes, MAC, 4);
+ SendCommand(&c);
- if (strlen(Cmd)<1) {
- PrintAndLog("Usage: hf iclass reader <reader type>");
- PrintAndLog(" sample: hf iclass reader 0");
return 0;
- }
+}
+
+int CmdHFiClassReader_Dump(const char *Cmd)
+{
+ uint8_t readerType = 0;
+ uint8_t MAC[4]={0x00,0x00,0x00,0x00};
+ uint8_t KEY[8]={0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00};
+ uint8_t CSN[8]={0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00};
+ uint8_t CCNR[12]={0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00};
+ //uint8_t CC_temp[8]={0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00};
+ uint8_t div_key[8]={0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00};
+ uint8_t keytable[128] = {0};
+ int elite = 0;
+ uint8_t *used_key;
+ int i;
+ if (strlen(Cmd)<1)
+ {
+ PrintAndLog("Usage: hf iclass dump <Key> [e]");
+ PrintAndLog(" Key - A 16 byte master key");
+ PrintAndLog(" e - If 'e' is specified, the key is interpreted as the 16 byte");
+ PrintAndLog(" Custom Key (KCus), which can be obtained via reader-attack");
+ PrintAndLog(" See 'hf iclass sim 2'. This key should be on iclass-format");
+ PrintAndLog(" sample: hf iclass dump 0011223344556677");
+
+
+ return 0;
+ }
+
+ if (param_gethex(Cmd, 0, KEY, 16))
+ {
+ PrintAndLog("KEY must include 16 HEX symbols");
+ return 1;
+ }
+
+ if (param_getchar(Cmd, 1) == 'e')
+ {
+ PrintAndLog("Elite switch on");
+ elite = 1;
+
+ //calc h2
+ hash2(KEY, keytable);
+ printarr_human_readable("keytable", keytable, 128);
- readerType = param_get8(Cmd, 0);
- PrintAndLog("--readertype:%02x", readerType);
+ }
+
+ UsbCommand resp;
+ uint8_t key_sel[8] = {0};
+ uint8_t key_sel_p[8] = { 0 };
+
+ UsbCommand c = {CMD_READER_ICLASS, {0}};
+ c.arg[0] = FLAG_ICLASS_READER_ONLY_ONCE| FLAG_ICLASS_READER_CC;
+ SendCommand(&c);
+
+
+
+ if (!WaitForResponseTimeout(CMD_ACK,&resp,4500))
+ {
+ PrintAndLog("Command execute timeout");
+ return 0;
+ }
- UsbCommand c = {CMD_READER_ICLASS, {readerType}};
- //memcpy(c.d.asBytes, CSN, 8);
- SendCommand(&c);
+ uint8_t isOK = resp.arg[0] & 0xff;
+ uint8_t * data = resp.d.asBytes;
+
+ memcpy(CSN,data,8);
+ memcpy(CCNR,data+16,8);
- /*UsbCommand * resp = WaitForResponseTimeout(CMD_ACK, 1500);
- if (resp != NULL) {
- uint8_t isOK = resp->arg[0] & 0xff;
PrintAndLog("isOk:%02x", isOK);
- } else {
- PrintAndLog("Command execute timeout");
- }*/
- return 0;
+ if(isOK > 0)
+ {
+ PrintAndLog("CSN: %s",sprint_hex(CSN,8));
+ }
+ if(isOK <= 1){
+ PrintAndLog("Failed to obtain CC! Aborting");
+ return 0;
+ }
+ //Status 2 or higher
+
+ if(elite)
+ {
+ //Get the key index (hash1)
+ uint8_t key_index[8] = {0};
+
+ hash1(CSN, key_index);
+ printvar("hash1", key_index,8);
+ for(i = 0; i < 8 ; i++)
+ key_sel[i] = keytable[key_index[i]] & 0xFF;
+ PrintAndLog("Pre-fortified 'permuted' HS key that would be needed by an iclass reader to talk to above CSN:");
+ printvar("k_sel", key_sel,8);
+ //Permute from iclass format to standard format
+ permutekey_rev(key_sel,key_sel_p);
+ used_key = key_sel_p;
+ }else{
+ used_key = KEY;
+ }
+
+ PrintAndLog("Pre-fortified key that would be needed by the OmniKey reader to talk to above CSN:");
+ printvar("Used key",used_key,8);
+ diversifyKey(CSN,used_key, div_key);
+ PrintAndLog("Hash0, a.k.a diversified key, that is computed using Ksel and stored in the card (Block 3):");
+ printvar("Div key", div_key, 8);
+ printvar("CC_NR:",CCNR,12);
+ doMAC(CCNR,div_key, MAC);
+ printvar("MAC", MAC, 4);
+
+ uint8_t iclass_data[32000] = {0};
+ uint32_t iclass_datalen = 0;
+ uint32_t iclass_blocksFailed = 0;//Set to 1 if dump was incomplete
+
+ UsbCommand d = {CMD_READER_ICLASS_REPLAY, {readerType}};
+ memcpy(d.d.asBytes, MAC, 4);
+ clearCommandBuffer();
+ SendCommand(&d);
+ PrintAndLog("Waiting for device to dump data. Press button on device and key on keyboard to abort...");
+ while (true) {
+ printf(".");
+ if (ukbhit()) {
+ getchar();
+ printf("\naborted via keyboard!\n");
+ break;
+ }
+ if(WaitForResponseTimeout(CMD_ACK,&resp,4500))
+ {
+ uint32_t dataLength = resp.arg[0];
+ iclass_blocksFailed |= resp.arg[1];
+ if(dataLength > 0)
+ {
+ PrintAndLog("Got %d bytes data (total so far %d)" ,dataLength,iclass_datalen);
+ memcpy(iclass_data+iclass_datalen, resp.d.asBytes,dataLength);
+ iclass_datalen += dataLength;
+ }else
+ {//Last transfer, datalength 0 means the dump is finished
+ PrintAndLog("Dumped %d bytes of data from tag. ", iclass_datalen);
+ if(iclass_blocksFailed)
+ {
+ PrintAndLog("OBS! Some blocks failed to be dumped correctly!");
+ }
+ if(iclass_datalen > 0)
+ {
+ char filename[100] = {0};
+ //create a preferred filename
+ snprintf(filename, 100,"iclass_tagdump-%02x%02x%02x%02x%02x%02x%02x%02x",
+ CSN[0],CSN[1],CSN[2],CSN[3],
+ CSN[4],CSN[5],CSN[6],CSN[7]);
+ //Place the div_key in block 3
+ memcpy(iclass_data+(3*8), div_key, 8);
+ saveFile(filename,"bin",iclass_data, iclass_datalen );
+ }
+ //Aaaand we're finished
+ return 0;
+ }
+ }
+ }
+
+
+ return 0;
+}
+
+int hf_iclass_eload_usage()
+{
+ PrintAndLog("Loads iclass tag-dump into emulator memory on device");
+ PrintAndLog("Usage: hf iclass eload f <filename>");
+ PrintAndLog("");
+ PrintAndLog("Example: hf iclass eload f iclass_tagdump-aa162d30f8ff12f1.bin");
+ return 0;
+
+}
+
+int iclassEmlSetMem(uint8_t *data, int blockNum, int blocksCount) {
+ UsbCommand c = {CMD_MIFARE_EML_MEMSET, {blockNum, blocksCount, 0}};
+ memcpy(c.d.asBytes, data, blocksCount * 16);
+ SendCommand(&c);
+ return 0;
+}
+int CmdHFiClassELoad(const char *Cmd)
+{
+
+ char opt = param_getchar(Cmd, 0);
+ if (strlen(Cmd)<1 || opt == 'h')
+ return hf_iclass_eload_usage();
+
+ //File handling and reading
+ FILE *f;
+ char filename[FILE_PATH_SIZE];
+ if(opt == 'f' && param_getstr(Cmd, 1, filename) > 0)
+ {
+ f = fopen(filename, "rb");
+ }else{
+ return hf_iclass_eload_usage();
+ }
+
+ if(!f) {
+ PrintAndLog("Failed to read from file '%s'", filename);
+ return 1;
+ }
+
+ fseek(f, 0, SEEK_END);
+ long fsize = ftell(f);
+ fseek(f, 0, SEEK_SET);
+
+ uint8_t *dump = malloc(fsize);
+
+
+ size_t bytes_read = fread(dump, 1, fsize, f);
+ fclose(f);
+
+ printIclassDumpInfo(dump);
+ //Validate
+
+ if (bytes_read < fsize)
+ {
+ prnlog("Error, could only read %d bytes (should be %d)",bytes_read, fsize );
+ free(dump);
+ return 1;
+ }
+ //Send to device
+ uint32_t bytes_sent = 0;
+ uint32_t bytes_remaining = bytes_read;
+
+ while(bytes_remaining > 0){
+ uint32_t bytes_in_packet = MIN(USB_CMD_DATA_SIZE, bytes_remaining);
+ UsbCommand c = {CMD_ICLASS_EML_MEMSET, {bytes_sent,bytes_in_packet,0}};
+ memcpy(c.d.asBytes, dump, bytes_in_packet);
+ SendCommand(&c);
+ bytes_remaining -= bytes_in_packet;
+ bytes_sent += bytes_in_packet;
+ }
+ free(dump);
+ PrintAndLog("Sent %d bytes of data to device emulator memory", bytes_sent);
+ return 0;
+}
+
+int usage_hf_iclass_decrypt()
+{
+ PrintAndLog("Usage: hf iclass decrypt f <tagdump> o ");
+ PrintAndLog("");
+ PrintAndLog("OBS! In order to use this function, the file 'iclass_decryptionkey.bin' must reside");
+ PrintAndLog("in the working directory. The file should be 16 bytes binary data");
+ PrintAndLog("");
+ PrintAndLog("example: hf iclass decrypt f tagdump_12312342343.bin");
+ PrintAndLog("");
+ PrintAndLog("OBS! This is pretty stupid implementation, it tries to decrypt every block after block 6. ");
+ PrintAndLog("Correct behaviour would be to decrypt only the application areas where the key is valid,");
+ PrintAndLog("which is defined by the configuration block.");
+ return 1;
+}
+
+int readKeyfile(const char *filename, size_t len, uint8_t* buffer)
+{
+ FILE *f = fopen(filename, "rb");
+ if(!f) {
+ PrintAndLog("Failed to read from file '%s'", filename);
+ return 1;
+ }
+ fseek(f, 0, SEEK_END);
+ long fsize = ftell(f);
+ fseek(f, 0, SEEK_SET);
+ size_t bytes_read = fread(buffer, 1, len, f);
+ fclose(f);
+ if(fsize != len)
+ {
+ PrintAndLog("Warning, file size is %d, expected %d", fsize, len);
+ return 1;
+ }
+ if(bytes_read != len)
+ {
+ PrintAndLog("Warning, could only read %d bytes, expected %d" ,bytes_read, len);
+ return 1;
+ }
+ return 0;
+}
+
+int CmdHFiClassDecrypt(const char *Cmd)
+{
+ uint8_t key[16] = { 0 };
+ if(readKeyfile("iclass_decryptionkey.bin", 16, key))
+ {
+ usage_hf_iclass_decrypt();
+ return 1;
+ }
+ PrintAndLog("Decryption file found... ");
+ char opt = param_getchar(Cmd, 0);
+ if (strlen(Cmd)<1 || opt == 'h')
+ return usage_hf_iclass_decrypt();
+
+ //Open the tagdump-file
+ FILE *f;
+ char filename[FILE_PATH_SIZE];
+ if(opt == 'f' && param_getstr(Cmd, 1, filename) > 0)
+ {
+ f = fopen(filename, "rb");
+ }else{
+ return usage_hf_iclass_decrypt();
+ }
+
+ fseek(f, 0, SEEK_END);
+ long fsize = ftell(f);
+ fseek(f, 0, SEEK_SET);
+ uint8_t enc_dump[8] = {0};
+ uint8_t *decrypted = malloc(fsize);
+ des3_context ctx = { DES_DECRYPT ,{ 0 } };
+ des3_set2key_dec( &ctx, key);
+ size_t bytes_read = fread(enc_dump, 1, 8, f);
+
+ //Use the first block (CSN) for filename
+ char outfilename[FILE_PATH_SIZE] = { 0 };
+ snprintf(outfilename,FILE_PATH_SIZE,"iclass_tagdump-%02x%02x%02x%02x%02x%02x%02x%02x-decrypted",
+ enc_dump[0],enc_dump[1],enc_dump[2],enc_dump[3],
+ enc_dump[4],enc_dump[5],enc_dump[6],enc_dump[7]);
+
+ size_t blocknum =0;
+ while(bytes_read == 8)
+ {
+ if(blocknum < 7)
+ {
+ memcpy(decrypted+(blocknum*8), enc_dump, 8);
+ }else{
+ des3_crypt_ecb(&ctx, enc_dump,decrypted +(blocknum*8) );
+ }
+ printvar("decrypted block", decrypted +(blocknum*8), 8);
+ bytes_read = fread(enc_dump, 1, 8, f);
+ blocknum++;
+ }
+ fclose(f);
+
+ saveFile(outfilename,"bin", decrypted, blocknum*8);
+
+ return 0;
+}
+
+int CmdHFiClass_iso14443A_write(const char *Cmd)
+{
+ uint8_t readerType = 0;
+ uint8_t MAC[4]={0x00,0x00,0x00,0x00};
+ uint8_t KEY[8]={0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00};
+ uint8_t CSN[8]={0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00};
+ uint8_t CCNR[12]={0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00};
+ uint8_t div_key[8]={0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00};
+
+ uint8_t blockNo=0;
+ uint8_t bldata[8]={0};
+
+ if (strlen(Cmd)<3)
+ {
+ PrintAndLog("Usage: hf iclass write <Key> <Block> <Data>");
+ PrintAndLog(" sample: hf iclass write 0011223344556677 10 AAAAAAAAAAAAAAAA");
+ return 0;
+ }
+
+ if (param_gethex(Cmd, 0, KEY, 16))
+ {
+ PrintAndLog("KEY must include 16 HEX symbols");
+ return 1;
+ }
+
+ blockNo = param_get8(Cmd, 1);
+ if (blockNo>32)
+ {
+ PrintAndLog("Error: Maximum number of blocks is 32 for iClass 2K Cards!");
+ return 1;
+ }
+ if (param_gethex(Cmd, 2, bldata, 8))
+ {
+ PrintAndLog("Block data must include 8 HEX symbols");
+ return 1;
+ }
+
+ UsbCommand c = {CMD_ICLASS_ISO14443A_WRITE, {0}};
+ SendCommand(&c);
+ UsbCommand resp;
+
+ if (WaitForResponseTimeout(CMD_ACK,&resp,4500)) {
+ uint8_t isOK = resp.arg[0] & 0xff;
+ uint8_t * data = resp.d.asBytes;
+
+ memcpy(CSN,data,8);
+ memcpy(CCNR,data+8,8);
+ PrintAndLog("DEBUG: %s",sprint_hex(CSN,8));
+ PrintAndLog("DEBUG: %s",sprint_hex(CCNR,8));
+ PrintAndLog("isOk:%02x", isOK);
+ } else {
+ PrintAndLog("Command execute timeout");
+ }
+
+ diversifyKey(CSN,KEY, div_key);
+
+ PrintAndLog("Div Key: %s",sprint_hex(div_key,8));
+ doMAC(CCNR, div_key, MAC);
+
+ UsbCommand c2 = {CMD_ICLASS_ISO14443A_WRITE, {readerType,blockNo}};
+ memcpy(c2.d.asBytes, bldata, 8);
+ memcpy(c2.d.asBytes+8, MAC, 4);
+ SendCommand(&c2);
+
+ if (WaitForResponseTimeout(CMD_ACK,&resp,1500)) {
+ uint8_t isOK = resp.arg[0] & 0xff;
+ uint8_t * data = resp.d.asBytes;
+
+ if (isOK)
+ PrintAndLog("isOk:%02x data:%s", isOK, sprint_hex(data, 4));
+ else
+ PrintAndLog("isOk:%02x", isOK);
+ } else {
+ PrintAndLog("Command execute timeout");
+ }
+ return 0;
+}
+int CmdHFiClass_loclass(const char *Cmd)
+{
+ char opt = param_getchar(Cmd, 0);
+
+ if (strlen(Cmd)<1 || opt == 'h') {
+ PrintAndLog("Usage: hf iclass loclass [options]");
+ PrintAndLog("Options:");
+ PrintAndLog("h Show this help");
+ PrintAndLog("t Perform self-test");
+ PrintAndLog("f <filename> Bruteforce iclass dumpfile");
+ PrintAndLog(" An iclass dumpfile is assumed to consist of an arbitrary number of");
+ PrintAndLog(" malicious CSNs, and their protocol responses");
+ PrintAndLog(" The the binary format of the file is expected to be as follows: ");
+ PrintAndLog(" <8 byte CSN><8 byte CC><4 byte NR><4 byte MAC>");
+ PrintAndLog(" <8 byte CSN><8 byte CC><4 byte NR><4 byte MAC>");
+ PrintAndLog(" <8 byte CSN><8 byte CC><4 byte NR><4 byte MAC>");
+ PrintAndLog(" ... totalling N*24 bytes");
+ return 0;
+ }
+ char fileName[255] = {0};
+ if(opt == 'f')
+ {
+ if(param_getstr(Cmd, 1, fileName) > 0)
+ {
+ return bruteforceFileNoKeys(fileName);
+ }else
+ {
+ PrintAndLog("You must specify a filename");
+ }
+ }
+ else if(opt == 't')
+ {
+ int errors = testCipherUtils();
+ errors += testMAC();
+ errors += doKeyTests(0);
+ errors += testElite();
+ if(errors)
+ {
+ prnlog("OBS! There were errors!!!");
+ }
+ return errors;
+ }
+
+ return 0;
}
static command_t CommandTable[] =
{
- {"help", CmdHelp, 1, "This help"},
- {"list", CmdHFiClassList, 0, "List iClass history"},
- {"snoop", CmdHFiClassSnoop, 0, "Eavesdrop iClass communication"},
- {"sim", CmdHFiClassSim, 0, "Simulate iClass tag"},
- {"reader", CmdHFiClassReader, 0, "Read an iClass tag"},
- {NULL, NULL, 0, NULL}
+ {"help", CmdHelp, 1, "This help"},
+ {"list", CmdHFiClassList, 0, "[Deprecated] List iClass history"},
+ {"snoop", CmdHFiClassSnoop, 0, "Eavesdrop iClass communication"},
+ {"sim", CmdHFiClassSim, 0, "Simulate iClass tag"},
+ {"reader",CmdHFiClassReader, 0, "Read an iClass tag"},
+ {"replay",CmdHFiClassReader_Replay, 0, "Read an iClass tag via Reply Attack"},
+ {"dump", CmdHFiClassReader_Dump, 0, "Authenticate and Dump iClass tag"},
+// {"write", CmdHFiClass_iso14443A_write, 0, "Authenticate and Write iClass block"},
+ {"loclass", CmdHFiClass_loclass, 1, "Use loclass to perform bruteforce of reader attack dump"},
+ {"eload", CmdHFiClassELoad, 0, "[experimental] Load data into iclass emulator memory"},
+ {"decrypt", CmdHFiClassDecrypt, 1, "Decrypt tagdump" },
+ {NULL, NULL, 0, NULL}
};
int CmdHFiClass(const char *Cmd)
{
- CmdsParse(CommandTable, Cmd);
- return 0;
+ CmdsParse(CommandTable, Cmd);
+ return 0;
}
int CmdHelp(const char *Cmd)
{
- CmdsHelp(CommandTable);
- return 0;
+ CmdsHelp(CommandTable);
+ return 0;
}
projects / proxmark3-svn / blobdiff