- 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);
-
- }
-
- UsbCommand resp;
- uint8_t key_sel[8] = {0};
- uint8_t key_sel_p[8] = { 0 };
-
- //HACK -- Below is for testing without access to a tag
- uint8_t fake_dummy_test = false;
- if(fake_dummy_test)
- {
- uint8_t xdata[16] = {0x01,0x02,0x03,0x04,0xF7,0xFF,0x12,0xE0, //CSN from http://www.proxmark.org/forum/viewtopic.php?pid=11230#p11230
- 0xFE,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF}; // Just a random CC. Would be good to add a real testcase here
- memcpy(resp.d.asBytes,xdata, 16);
- resp.arg[0] = 2;
- }
-
- //End hack
-
-
- UsbCommand c = {CMD_READER_ICLASS, {0}};
- c.arg[0] = FLAG_ICLASS_READER_ONLY_ONCE| FLAG_ICLASS_READER_GET_CC;
- if(!fake_dummy_test)
- SendCommand(&c);
-
-
-
- if (fake_dummy_test || 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("isOk:%02x", isOK);
-
- if(isOK > 0)
- {
- PrintAndLog("CSN: %s",sprint_hex(CSN,8));
- }
- if(isOK > 1)
- {
- 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{
- //Perhaps this should also be permuted to std format?
- // Something like the code below? I have no std system
- // to test this with /Martin
-
- //uint8_t key_sel_p[8] = { 0 };
- //permutekey_rev(KEY,key_sel_p);
- //used_key = key_sel_p;
-
- 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,12,div_key, MAC);
- printvar("MAC", MAC, 4);
-
- UsbCommand d = {CMD_READER_ICLASS_REPLAY, {readerType}};
- memcpy(d.d.asBytes, MAC, 4);
- if(!fake_dummy_test) SendCommand(&d);
-
- }else{
- PrintAndLog("Failed to obtain CC! Aborting");
- }
- } else {
- PrintAndLog("Command execute timeout");
- }
-
- return 0;
+ 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);
+
+ }
+
+ 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_GET_CC;
+ SendCommand(&c);
+
+
+
+ if (!WaitForResponseTimeout(CMD_ACK,&resp,4500))
+ {
+ PrintAndLog("Command execute timeout");
+ return 0;
+ }
+
+ uint8_t isOK = resp.arg[0] & 0xff;
+ uint8_t * data = resp.d.asBytes;
+
+ memcpy(CSN,data,8);
+ memcpy(CCNR,data+8,8);
+
+ PrintAndLog("isOk:%02x", isOK);
+
+ 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,12,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, 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);
+
+ //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 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;
projects / proxmark3-svn / blobdiff