+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, sizeof(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);
+
+ if (fsize < 0) {
+ PrintAndLog("Error, when getting filesize");
+ fclose(f);
+ return 1;
+ }
+
+ 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;
+}
+
+static 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 usage_hf_iclass_decrypt(void) {
+ PrintAndLog("Usage: hf iclass decrypt f <tagdump>");
+ 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 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, sizeof(filename)) > 0) {
+ f = fopen(filename, "rb");
+ if ( f == NULL ) {
+ PrintAndLog("Could not find file %s", filename);
+ return 1;
+ }
+ } 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);
+ mbedtls_des3_context ctx = { {0} };
+ mbedtls_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{
+ mbedtls_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);
+ free(decrypted);
+ return 0;
+}
+
+int usage_hf_iclass_encrypt(void) {
+ PrintAndLog("Usage: hf iclass encrypt <BlockData>");
+ 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 encrypt 0102030405060708");
+ PrintAndLog("");
+ return 0;
+}
+
+static int iClassEncryptBlkData(uint8_t *blkData) {
+ uint8_t key[16] = { 0 };
+ if(readKeyfile("iclass_decryptionkey.bin", 16, key))
+ {
+ usage_hf_iclass_encrypt();
+ return 1;
+ }
+ PrintAndLog("Decryption file found... ");
+
+ uint8_t encryptedData[16];
+ uint8_t *encrypted = encryptedData;
+ mbedtls_des3_context ctx = { {0} };
+ mbedtls_des3_set2key_enc( &ctx, key);
+
+ mbedtls_des3_crypt_ecb(&ctx, blkData,encrypted);
+ //printvar("decrypted block", decrypted, 8);
+ memcpy(blkData,encrypted,8);
+
+ return 1;
+}
+
+int CmdHFiClassEncryptBlk(const char *Cmd) {
+ uint8_t blkData[8] = {0};
+ char opt = param_getchar(Cmd, 0);
+ if (strlen(Cmd)<1 || opt == 'h')
+ return usage_hf_iclass_encrypt();
+
+ //get the bytes to encrypt
+ if (param_gethex(Cmd, 0, blkData, 16))
+ {
+ PrintAndLog("BlockData must include 16 HEX symbols");
+ return 0;
+ }
+ if (!iClassEncryptBlkData(blkData)) return 0;
+
+ printvar("encrypted block", blkData, 8);
+ return 1;
+}
+
+void Calc_wb_mac(uint8_t blockno, uint8_t *data, uint8_t *div_key, uint8_t MAC[4]) {
+ uint8_t WB[9];
+ WB[0] = blockno;
+ memcpy(WB + 1,data,8);
+ doMAC_N(WB,sizeof(WB),div_key,MAC);
+ //printf("Cal wb mac block [%02x][%02x%02x%02x%02x%02x%02x%02x%02x] : MAC [%02x%02x%02x%02x]",WB[0],WB[1],WB[2],WB[3],WB[4],WB[5],WB[6],WB[7],WB[8],MAC[0],MAC[1],MAC[2],MAC[3]);
+}
+
+static bool select_only(uint8_t *CSN, uint8_t *CCNR, bool use_credit_key, bool verbose) {
+ UsbCommand resp;
+
+ UsbCommand c = {CMD_READER_ICLASS, {0}};
+ c.arg[0] = FLAG_ICLASS_READER_ONLY_ONCE | FLAG_ICLASS_READER_CC | FLAG_ICLASS_READER_ONE_TRY;
+ if (use_credit_key)
+ c.arg[0] |= FLAG_ICLASS_READER_CEDITKEY;
+
+ clearCommandBuffer();
+ SendCommand(&c);
+ if (!WaitForResponseTimeout(CMD_ACK,&resp,4500))
+ {
+ PrintAndLog("Command execute timeout");
+ return false;
+ }
+
+ uint8_t isOK = resp.arg[0] & 0xff;
+ uint8_t *data = resp.d.asBytes;
+
+ memcpy(CSN,data,8);
+ if (CCNR!=NULL)memcpy(CCNR,data+16,8);
+ if(isOK > 0)
+ {
+ if (verbose) PrintAndLog("CSN: %s",sprint_hex(CSN,8));
+ }
+ if(isOK <= 1){
+ PrintAndLog("Failed to obtain CC! Aborting");
+ return false;
+ }
+ return true;
+}
+
+static bool select_and_auth(uint8_t *KEY, uint8_t *MAC, uint8_t *div_key, bool use_credit_key, bool elite, bool rawkey, bool verbose) {
+ 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};
+
+ if (!select_only(CSN, CCNR, use_credit_key, verbose))
+ return false;
+
+ //get div_key
+ if(rawkey)
+ memcpy(div_key, KEY, 8);
+ else
+ HFiClassCalcDivKey(CSN, KEY, div_key, elite);
+ if (verbose) PrintAndLog("Authing with %s: %02x%02x%02x%02x%02x%02x%02x%02x", rawkey ? "raw key" : "diversified key", div_key[0],div_key[1],div_key[2],div_key[3],div_key[4],div_key[5],div_key[6],div_key[7]);
+
+ doMAC(CCNR, div_key, MAC);
+ UsbCommand resp;
+ UsbCommand d = {CMD_ICLASS_AUTHENTICATION, {0}};
+ memcpy(d.d.asBytes, MAC, 4);
+ clearCommandBuffer();
+ SendCommand(&d);
+ if (!WaitForResponseTimeout(CMD_ACK,&resp,4500))
+ {
+ if (verbose) PrintAndLog("Auth Command execute timeout");
+ return false;
+ }
+ uint8_t isOK = resp.arg[0] & 0xff;
+ if (!isOK) {
+ if (verbose) PrintAndLog("Authentication error");
+ return false;
+ }
+ return true;
+}
+
+int usage_hf_iclass_dump(void) {
+ PrintAndLog("Usage: hf iclass dump f <fileName> k <Key> c <CreditKey> e|r\n");
+ PrintAndLog("Options:");
+ PrintAndLog(" f <filename> : specify a filename to save dump to");
+ PrintAndLog(" k <Key> : *Access Key as 16 hex symbols or 1 hex to select key from memory");
+ PrintAndLog(" c <CreditKey>: Credit Key as 16 hex symbols or 1 hex to select key from memory");
+ 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(" r : If 'r' is specified, the key is interpreted as raw block 3/4");
+ PrintAndLog(" NOTE: * = required");
+ PrintAndLog("Samples:");
+ PrintAndLog(" hf iclass dump k 001122334455667B");
+ PrintAndLog(" hf iclass dump k AAAAAAAAAAAAAAAA c 001122334455667B");
+ PrintAndLog(" hf iclass dump k AAAAAAAAAAAAAAAA e");
+ return 0;
+}
+
+int CmdHFiClassReader_Dump(const char *Cmd) {
+
+ uint8_t MAC[4] = {0x00,0x00,0x00,0x00};
+ uint8_t div_key[8] = {0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00};
+ uint8_t c_div_key[8] = {0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00};
+ uint8_t blockno = 0;
+ uint8_t numblks = 0;
+ uint8_t maxBlk = 31;
+ uint8_t app_areas = 1;
+ uint8_t kb = 2;
+ uint8_t KEY[8] = {0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00};
+ uint8_t CreditKEY[8] = {0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00};
+ uint8_t keyNbr = 0;
+ uint8_t dataLen = 0;
+ uint8_t fileNameLen = 0;
+ char filename[FILE_PATH_SIZE]={0};
+ char tempStr[50] = {0};
+ bool have_debit_key = false;
+ bool have_credit_key = false;
+ bool use_credit_key = false;
+ bool elite = false;
+ bool rawkey = false;
+ bool errors = false;
+ uint8_t cmdp = 0;
+
+ while(param_getchar(Cmd, cmdp) != 0x00)
+ {
+ switch(param_getchar(Cmd, cmdp))
+ {
+ case 'h':
+ case 'H':
+ return usage_hf_iclass_dump();
+ case 'c':
+ case 'C':
+ have_credit_key = true;
+ dataLen = param_getstr(Cmd, cmdp+1, tempStr, sizeof(tempStr));
+ if (dataLen == 16) {
+ errors = param_gethex(tempStr, 0, CreditKEY, dataLen);
+ } else if (dataLen == 1) {
+ keyNbr = param_get8(Cmd, cmdp+1);
+ if (keyNbr < ICLASS_KEYS_MAX) {
+ memcpy(CreditKEY, iClass_Key_Table[keyNbr], 8);
+ } else {
+ PrintAndLog("\nERROR: Credit KeyNbr is invalid\n");
+ errors = true;
+ }
+ } else {
+ PrintAndLog("\nERROR: Credit Key is incorrect length\n");
+ errors = true;
+ }
+ cmdp += 2;
+ break;
+ case 'e':
+ case 'E':
+ elite = true;
+ cmdp++;
+ break;
+ case 'f':
+ case 'F':
+ fileNameLen = param_getstr(Cmd, cmdp+1, filename, sizeof(filename));
+ if (fileNameLen < 1) {
+ PrintAndLog("No filename found after f");
+ errors = true;
+ }
+ cmdp += 2;
+ break;
+ case 'k':
+ case 'K':
+ have_debit_key = true;
+ dataLen = param_getstr(Cmd, cmdp+1, tempStr, sizeof(tempStr));
+ if (dataLen == 16) {
+ errors = param_gethex(tempStr, 0, KEY, dataLen);
+ } else if (dataLen == 1) {
+ keyNbr = param_get8(Cmd, cmdp+1);
+ if (keyNbr < ICLASS_KEYS_MAX) {
+ memcpy(KEY, iClass_Key_Table[keyNbr], 8);
+ } else {
+ PrintAndLog("\nERROR: Credit KeyNbr is invalid\n");
+ errors = true;
+ }
+ } else {
+ PrintAndLog("\nERROR: Credit Key is incorrect length\n");
+ errors = true;
+ }
+ cmdp += 2;
+ break;
+ case 'r':
+ case 'R':
+ rawkey = true;
+ cmdp++;
+ break;
+ default:
+ PrintAndLog("Unknown parameter '%c'\n", param_getchar(Cmd, cmdp));
+ errors = true;
+ break;
+ }
+ if(errors) return usage_hf_iclass_dump();
+ }
+
+ if (cmdp < 2) return usage_hf_iclass_dump();
+ // if no debit key given try credit key on AA1 (not for iclass but for some picopass this will work)
+ if (!have_debit_key && have_credit_key) use_credit_key = true;
+
+ //get config and first 3 blocks
+ UsbCommand c = {CMD_READER_ICLASS, {FLAG_ICLASS_READER_CSN |
+ FLAG_ICLASS_READER_CONF | FLAG_ICLASS_READER_ONLY_ONCE | FLAG_ICLASS_READER_ONE_TRY}};
+ UsbCommand resp;
+ uint8_t tag_data[255*8];
+
+ clearCommandBuffer();
+ SendCommand(&c);
+ if (!WaitForResponseTimeout(CMD_ACK, &resp, 4500)) {
+ PrintAndLog("Command execute timeout");
+ DropField();
+ return 0;
+ }
+ uint8_t readStatus = resp.arg[0] & 0xff;
+ uint8_t *data = resp.d.asBytes;
+
+ if(readStatus == 0){
+ PrintAndLog("No tag found...");
+ DropField();
+ return 0;
+ }
+ if( readStatus & (FLAG_ICLASS_READER_CSN|FLAG_ICLASS_READER_CONF|FLAG_ICLASS_READER_CC)){
+ memcpy(tag_data, data, 8*3);
+ blockno+=2; // 2 to force re-read of block 2 later. (seems to respond differently..)
+ numblks = data[8];
+ getMemConfig(data[13], data[12], &maxBlk, &app_areas, &kb);
+ // large memory - not able to dump pages currently
+ if (numblks > maxBlk) numblks = maxBlk;
+ }
+ DropField();
+ // authenticate debit key and get div_key - later store in dump block 3
+ if (!select_and_auth(KEY, MAC, div_key, use_credit_key, elite, rawkey, false)){
+ //try twice - for some reason it sometimes fails the first time...
+ if (!select_and_auth(KEY, MAC, div_key, use_credit_key, elite, rawkey, false)){
+ DropField();
+ return 0;
+ }
+ }
+
+ // begin dump
+ UsbCommand w = {CMD_ICLASS_DUMP, {blockno, numblks-blockno+1}};
+ clearCommandBuffer();
+ SendCommand(&w);
+ if (!WaitForResponseTimeout(CMD_ACK, &resp, 4500)) {
+ PrintAndLog("Command execute time-out 1");
+ DropField();
+ return 1;
+ }
+ uint32_t blocksRead = resp.arg[1];
+ uint8_t isOK = resp.arg[0] & 0xff;
+ if (!isOK && !blocksRead) {
+ PrintAndLog("Read Block Failed");
+ DropField();
+ return 0;
+ }
+ uint32_t startindex = resp.arg[2];
+ if (blocksRead*8 > sizeof(tag_data)-(blockno*8)) {
+ PrintAndLog("Data exceeded Buffer size!");
+ blocksRead = (sizeof(tag_data)/8) - blockno;
+ }
+ // response ok - now get bigbuf content of the dump
+ GetFromBigBuf(tag_data+(blockno*8), blocksRead*8, startindex, NULL, -1, false);
+ size_t gotBytes = blocksRead*8 + blockno*8;
+
+ // try AA2
+ if (have_credit_key) {
+ //turn off hf field before authenticating with different key
+ DropField();
+ memset(MAC,0,4);
+ // AA2 authenticate credit key and git c_div_key - later store in dump block 4
+ if (!select_and_auth(CreditKEY, MAC, c_div_key, true, false, false, false)){
+ //try twice - for some reason it sometimes fails the first time...
+ if (!select_and_auth(CreditKEY, MAC, c_div_key, true, false, false, false)){
+ DropField();
+ return 0;
+ }
+ }
+ // do we still need to read more block? (aa2 enabled?)
+ if (maxBlk > blockno+numblks+1) {
+ // setup dump and start
+ w.arg[0] = blockno + blocksRead;
+ w.arg[1] = maxBlk - (blockno + blocksRead);
+ clearCommandBuffer();
+ SendCommand(&w);
+ if (!WaitForResponseTimeout(CMD_ACK, &resp, 4500)) {
+ PrintAndLog("Command execute timeout 2");
+ DropField();
+ return 0;
+ }
+ uint8_t isOK = resp.arg[0] & 0xff;
+ blocksRead = resp.arg[1];
+ if (!isOK && !blocksRead) {
+ PrintAndLog("Read Block Failed 2");
+ DropField();
+ return 0;
+ }
+
+ startindex = resp.arg[2];
+ if (blocksRead*8 > sizeof(tag_data)-gotBytes) {
+ PrintAndLog("Data exceeded Buffer size!");
+ blocksRead = (sizeof(tag_data) - gotBytes)/8;
+ }
+ // get dumped data from bigbuf
+ GetFromBigBuf(tag_data+gotBytes, blocksRead*8, startindex, NULL, -1, false);
+
+ gotBytes += blocksRead*8;
+ } else { //field is still on - turn it off...
+ DropField();
+ }
+ }
+
+ // add diversified keys to dump
+ if (have_debit_key) memcpy(tag_data+(3*8),div_key,8);
+ if (have_credit_key) memcpy(tag_data+(4*8),c_div_key,8);
+ // print the dump
+ printf("------+--+-------------------------+\n");
+ printf("CSN |00| %s|\n",sprint_hex(tag_data, 8));
+ printIclassDumpContents(tag_data, 1, (gotBytes/8), gotBytes);
+
+ if (filename[0] == 0){
+ snprintf(filename, FILE_PATH_SIZE,"iclass_tagdump-%02x%02x%02x%02x%02x%02x%02x%02x",
+ tag_data[0],tag_data[1],tag_data[2],tag_data[3],
+ tag_data[4],tag_data[5],tag_data[6],tag_data[7]);
+ }
+
+ // save the dump to .bin file
+ PrintAndLog("Saving dump file - %d blocks read", gotBytes/8);
+ saveFile(filename, "bin", tag_data, gotBytes);
+ return 1;
+}
+
+static int WriteBlock(uint8_t blockno, uint8_t *bldata, uint8_t *KEY, bool use_credit_key, bool elite, bool rawkey, bool verbose) {
+ uint8_t MAC[4]={0x00,0x00,0x00,0x00};
+ uint8_t div_key[8]={0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00};
+ if (!select_and_auth(KEY, MAC, div_key, use_credit_key, elite, rawkey, verbose))
+ return 0;
+
+ UsbCommand resp;
+
+ Calc_wb_mac(blockno,bldata,div_key,MAC);
+ UsbCommand w = {CMD_ICLASS_WRITEBLOCK, {blockno}};
+ memcpy(w.d.asBytes, bldata, 8);
+ memcpy(w.d.asBytes + 8, MAC, 4);
+
+ clearCommandBuffer();
+ SendCommand(&w);
+ if (!WaitForResponseTimeout(CMD_ACK,&resp,4500))
projects / proxmark3-svn / blobdiff