From a8be77afd1653dc83f1803d78ef0379a7bb630db Mon Sep 17 00:00:00 2001 From: iceman1001 Date: Wed, 29 Apr 2015 20:24:37 +0200 Subject: [PATCH 1/1] CHG: re-factored the "HF MFU CAUTH" command to be simpler. ADD: "HF MFU INFO", added detection of MAGIC UL-C tags and a simple loop test 5 default 3des keys. --- client/cmdhfmfu.c | 323 +++++++++++++++++++++++++++------------------- client/cmdhfmfu.h | 3 + 2 files changed, 192 insertions(+), 134 deletions(-) diff --git a/client/cmdhfmfu.c b/client/cmdhfmfu.c index 85b824cf..79f1f027 100644 --- a/client/cmdhfmfu.c +++ b/client/cmdhfmfu.c @@ -13,14 +13,60 @@ #include "cmdhf14a.h" #include "mifare.h" -#define MAX_ULTRA_BLOCKS 0x0f -#define MAX_ULTRAC_BLOCKS 0x2f -//#define MAX_ULTRAC_BLOCKS 0x2c +#define MAX_UL_BLOCKS 0x0f +#define MAX_ULC_BLOCKS 0x2f +#define MAX_ULEV1a_BLOCKS 0x0b; +#define MAX_ULEV1b_BLOCKS 0x20; +uint8_t default_3des_keys[7][16] = { + { 0x42,0x52,0x45,0x41,0x4b,0x4d,0x45,0x49,0x46,0x59,0x4f,0x55,0x43,0x41,0x4e,0x21 },// 3des std key + { 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00 },// all zeroes + { 0x00,0x01,0x02,0x03,0x04,0x05,0x06,0x07,0x08,0x09,0x0a,0x0b,0x0c,0x0d,0x0e,0x0f },// 0x00-0x0F + { 0x49,0x45,0x4D,0x4B,0x41,0x45,0x52,0x42,0x21,0x4E,0x41,0x43,0x55,0x4F,0x59,0x46 },// NFC-key + { 0x01,0x01,0x01,0x01,0x01,0x01,0x01,0x01,0x01,0x01,0x01,0x01,0x01,0x01,0x01,0x01 },// all ones + { 0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF },// all FF + { 0x00,0x11,0x22,0x33,0x44,0x55,0x66,0x77,0x88,0x99,0xAA,0xBB,0xCC,0xDD,0xEE,0xFF } // 11 22 33 + }; + static int CmdHelp(const char *Cmd); +// return 1 if tag responded to 0x1A. +uint8_t requestAuthentication( uint8_t* nonce){ + + UsbCommand c = {CMD_READER_ISO_14443a, {ISO14A_CONNECT | ISO14A_RAW | ISO14A_APPEND_CRC ,2 ,0}}; + c.d.asBytes[0] = 0x1A; + c.d.asBytes[1] = 0x00; + SendCommand(&c); + UsbCommand resp; + WaitForResponse(CMD_ACK, &resp); // skip select answer. + + if ( !(resp.arg[0] & 0xff) ) + return 0; + + if (WaitForResponseTimeout(CMD_ACK, &resp, 1500)) { + + if ( resp.arg[0] & 0xff ) { + memcpy(nonce, resp.d.asBytes+1, 8); + return 1; + } + } + return 0; +} + +typedef enum TAGTYPE_UL { + UNKNOWN = 0x00, + UL = 0x01, + UL_C = 0x02, + UL_EV1_48 = 0x04, + UL_EV1_128 = 0x08, + UL_MAGIC = 0x10, + UL_C_MAGIC = 0x14, +} TagTypeUL_t; + int CmdHF14AMfUInfo(const char *Cmd){ + TagTypeUL_t tagtype = UNKNOWN; + uint8_t datatemp[7] = {0x00}; uint8_t isOK = 0; uint8_t data[16] = {0x00}; @@ -45,9 +91,12 @@ int CmdHF14AMfUInfo(const char *Cmd){ PrintAndLog("\n-- Tag Information ---------"); PrintAndLog("-------------------------------------------------------------"); - UsbCommand cmd = {CMD_READER_ISO_14443a, {ISO14A_CONNECT | ISO14A_RAW | ISO14A_APPEND_CRC , 1, 0}}; - cmd.d.asBytes[0] = 0x60; - SendCommand(&cmd); + c.cmd = CMD_READER_ISO_14443a; + c.arg[0] = ISO14A_CONNECT | ISO14A_RAW | ISO14A_APPEND_CRC; + c.arg[1] = 1; + c.arg[2] = 0; + c.d.asBytes[0] = 0x60; + SendCommand(&c); WaitForResponse(CMD_ACK, &resp); if ( resp.arg[0] ) { @@ -56,46 +105,93 @@ int CmdHF14AMfUInfo(const char *Cmd){ uint8_t version[8] = {0,0,0,0,0,0,0,0}; memcpy(&version, resp.d.asBytes, sizeof(version)); uint8_t len = resp.arg[0] & 0xff; - switch (len) { - // todo, identify "Magic UL-C tags". // they usually have a static nonce response to 0x1A command. - // UL-EV1, size, check version[6] == 0x0b (smaller) 0x0b * 4 == 48 - case 0x0A:PrintAndLog(" TYPE : NXP MIFARE Ultralight EV1 %d bytes", (version[6] == 0xB) ? 48 : 128); break; - case 0x01:PrintAndLog(" TYPE : NXP MIFARE Ultralight C");break; - case 0x00:PrintAndLog(" TYPE : NXP MIFARE Ultralight");break; - } + + if ( len == 0x0A && version[6] == 0x0B ) + tagtype = UL_EV1_48; + else if ( len == 0x0A && version[6] != 0x0B ) + tagtype = UL_EV1_128; + else if ( len == 0x01 ) + tagtype = UL_C | UL_C_MAGIC; + else if ( len == 0x00 ) + tagtype = UL | UL_MAGIC | UL_C_MAGIC; } } - // TODO: - // Answers to 0x1A == UL-C - // NONCE seems to be fixed for my Magic UL-C. How to detect a Magic UL? - // maybe read Block0, change 1 byte, write back, and see if it failes or not. If magic, revert changes made? + + // Magic UL-C, mine have a static nonce response to 0x1A command. + uint8_t nonce1[8] = {0,0,0,0,0,0,0,0}; + uint8_t nonce2[8] = {0,0,0,0,0,0,0,0}; + uint8_t status = requestAuthentication(nonce1); + if ( status ) { + requestAuthentication(nonce2); + if ( !memcmp(nonce1, nonce2, 8) ) + tagtype = UL_C_MAGIC; + } else { + + //remove UL_C_MAGIC + tagtype = tagtype & UL_C_MAGIC; + + // Magic Ultralight test here + } + + switch(tagtype){ + case UNKNOWN : PrintAndLog(" TYPE : Unknown"); return 0; + case UL : PrintAndLog(" TYPE : MIFARE Ultralight");break; + case UL_C : PrintAndLog(" TYPE : MIFARE Ultralight C");break; + case UL_EV1_48 : PrintAndLog(" TYPE : MIFARE Ultralight EV1 48 bytes"); break; + case UL_EV1_128 : PrintAndLog(" TYPE : MIFARE Ultralight EV1 128 bytes"); break; + case UL_MAGIC : PrintAndLog(" TYPE : MIFARE Ultralight (MAGIC)");break; + case UL_C_MAGIC : PrintAndLog(" TYPE : MIFARE Ultralight-C (MAGIC)");break; + } // UID memcpy( datatemp, data, 3); memcpy( datatemp+3, data+4, 4); - PrintAndLog("MANUFACTURER : %s", getTagInfo(datatemp[0])); - PrintAndLog(" UID : %s ", sprint_hex(datatemp, 7)); + PrintAndLog(" UID : %s ", sprint_hex(datatemp, 7)); + PrintAndLog(" UID[0] (Manufacturer Byte) = %02x, Manufacturer: %s", datatemp[0], getTagInfo(datatemp[0]) ); + // BBC // CT (cascade tag byte) 0x88 xor SN0 xor SN1 xor SN2 int crc0 = 0x88 ^ data[0] ^ data[1] ^data[2]; if ( data[3] == crc0 ) - PrintAndLog(" BCC0 : %02x - Ok", data[3]); + PrintAndLog(" BCC0 : %02x - Ok", data[3]); else - PrintAndLog(" BCC0 : %02x - crc should be %02x", data[3], crc0); + PrintAndLog(" BCC0 : %02x - crc should be %02x", data[3], crc0); int crc1 = data[4] ^ data[5] ^ data[6] ^data[7]; if ( data[8] == crc1 ) - PrintAndLog(" BCC1 : %02x - Ok", data[8]); + PrintAndLog(" BCC1 : %02x - Ok", data[8]); else - PrintAndLog(" BCC1 : %02x - crc should be %02x", data[8], crc1 ); + PrintAndLog(" BCC1 : %02x - crc should be %02x", data[8], crc1 ); - PrintAndLog(" Internal : %s ", sprint_hex(data + 9, 1)); + PrintAndLog(" Internal : %s ", sprint_hex(data + 9, 1)); memcpy(datatemp, data+10, 2); - PrintAndLog(" Lock : %s - %s", sprint_hex(datatemp, 2),printBits( 2, &datatemp) ); - PrintAndLog(" OneTimePad : %s ", sprint_hex(data + 3*4, 4)); + PrintAndLog(" Lock : %s - %s", sprint_hex(datatemp, 2),printBits( 2, &datatemp) ); + PrintAndLog("OneTimePad : %s ", sprint_hex(data + 3*4, 4)); PrintAndLog(""); + + + PrintAndLog("--- "); + if ( (tagtype & UL_C) == UL_C || (tagtype & UL_C_MAGIC) == UL_C_MAGIC ){ + + PrintAndLog("Trying some default 3des keys"); + uint8_t *key; + + for (uint8_t i = 0; i < 5; ++i ){ + key = default_3des_keys[i]; + if (try3DesAuthentication(key)){ + PrintAndLog("Found default 3des key: %s", sprint_hex(key,16)); + return 0; + } + } + } + else if ( + (tagtype & UL_EV1_48) == UL_EV1_48 || + (tagtype & UL_EV1_128) == UL_EV1_128 + ) { + PrintAndLog("Trying some known EV1 passwords."); + } return 0; } @@ -122,7 +218,7 @@ int CmdHF14AMfUWrBl(const char *Cmd){ blockNo = param_get8(Cmd, 0); - if (blockNo > MAX_ULTRA_BLOCKS){ + if (blockNo > MAX_UL_BLOCKS){ PrintAndLog("Error: Maximum number of blocks is 15 for Ultralight Cards!"); return 1; } @@ -185,7 +281,7 @@ int CmdHF14AMfURdBl(const char *Cmd){ blockNo = param_get8(Cmd, 0); - if (blockNo > MAX_ULTRA_BLOCKS){ + if (blockNo > MAX_UL_BLOCKS){ PrintAndLog("Error: Maximum number of blocks is 15 for Ultralight"); return 1; } @@ -394,30 +490,21 @@ void rol (uint8_t *data, const size_t len){ // int CmdHF14AMfucAuth(const char *Cmd){ - uint8_t default_keys[7][16] = { - { 0x42,0x52,0x45,0x41,0x4b,0x4d,0x45,0x49,0x46,0x59,0x4f,0x55,0x43,0x41,0x4e,0x21 },// 3des std key - { 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00 },// all zeroes - { 0x00,0x01,0x02,0x03,0x04,0x05,0x06,0x07,0x08,0x09,0x0a,0x0b,0x0c,0x0d,0x0e,0x0f },// 0x00-0x0F - { 0x49,0x45,0x4D,0x4B,0x41,0x45,0x52,0x42,0x21,0x4E,0x41,0x43,0x55,0x4F,0x59,0x46 },// NFC-key - { 0x01,0x01,0x01,0x01,0x01,0x01,0x01,0x01,0x01,0x01,0x01,0x01,0x01,0x01,0x01,0x01 },// all ones - { 0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF },// all FF - { 0x00,0x11,0x22,0x33,0x44,0x55,0x66,0x77,0x88,0x99,0xAA,0xBB,0xCC,0xDD,0xEE,0xFF } // 11 22 33 - }; - - char cmdp = param_getchar(Cmd, 0); - uint8_t keyNo = 0; bool errors = false; + + char cmdp = param_getchar(Cmd, 0); + //Change key to user defined one if (cmdp == 'k' || cmdp == 'K'){ keyNo = param_get8(Cmd, 1); - if(keyNo > 6) errors = true; + if(keyNo > 6) + errors = true; } - if (cmdp == 'h' || cmdp == 'H') { + if (cmdp == 'h' || cmdp == 'H') errors = true; - } - + if (errors) { PrintAndLog("Usage: hf mfu cauth k "); PrintAndLog(" 0 (default): 3DES standard key"); @@ -432,109 +519,78 @@ int CmdHF14AMfucAuth(const char *Cmd){ return 0; } - uint8_t random_a[8] = { 1,1,1,1,1,1,1,1 }; - //uint8_t enc_random_a[8] = { 0 }; - uint8_t random_b[8] = { 0 }; - uint8_t enc_random_b[8] = { 0 }; - uint8_t random_a_and_b[16] = { 0 }; - des3_context ctx = { 0 }; - uint8_t *key = default_keys[keyNo]; + uint8_t *key = default_3des_keys[keyNo]; + if (try3DesAuthentication(key)) + PrintAndLog("Authentication successful. 3des key: %s",sprint_hex(key, 8)); + else + PrintAndLog("Authentication failed"); + + return 0; +} + +int try3DesAuthentication( uint8_t *key){ + uint8_t blockNo = 0; uint32_t cuid = 0; - //Auth1 + des3_context ctx = { 0 }; + + uint8_t random_a[8] = { 1,1,1,1,1,1,1,1 }; + uint8_t random_b[8] = { 0 }; + uint8_t enc_random_b[8] = { 0 }; + uint8_t rnd_ab[16] = { 0 }; + uint8_t iv[8] = { 0 }; + UsbCommand c = {CMD_MIFAREUC_AUTH1, {blockNo}}; SendCommand(&c); UsbCommand resp; - if (WaitForResponseTimeout(CMD_ACK,&resp,1500)) { - uint8_t isOK = resp.arg[0] & 0xff; - cuid = resp.arg[1]; - uint8_t * data= resp.d.asBytes; - - if (isOK){ - memcpy(enc_random_b,data+1,8); - } else { - PrintAndLog("Auth failed"); - return 2; - } - } else { - PrintAndLog("Command execute timeout"); - return 1; - } - uint8_t iv[8] = { 0 }; - - PrintAndLog(" RndA :%s",sprint_hex(random_a, 8)); - PrintAndLog(" enc(RndB):%s",sprint_hex(enc_random_b, 8)); + if ( !WaitForResponseTimeout(CMD_ACK, &resp, 1500) ) return -1; + if ( !(resp.arg[0] & 0xff) ) return -2; + + cuid = resp.arg[1]; + memcpy(enc_random_b,resp.d.asBytes+1,8); des3_set2key_dec(&ctx, key); - - des3_crypt_cbc(&ctx // des3_context *ctx - , DES_DECRYPT // int mode - , sizeof(random_b) // size_t length - , iv // unsigned char iv[8] - , enc_random_b // const unsigned char *input - , random_b // unsigned char *output - ); - - PrintAndLog(" RndB:%s",sprint_hex(random_b, 8)); + // context, mode, length, IV, input, output + des3_crypt_cbc( &ctx, DES_DECRYPT, sizeof(random_b), iv , enc_random_b , random_b); rol(random_b,8); - memcpy(random_a_and_b ,random_a,8); - memcpy(random_a_and_b+8,random_b,8); - - PrintAndLog(" A+B:%s",sprint_hex(random_a_and_b, 16)); + memcpy(rnd_ab ,random_a,8); + memcpy(rnd_ab+8,random_b,8); des3_set2key_enc(&ctx, key); - - des3_crypt_cbc(&ctx // des3_context *ctx - , DES_ENCRYPT // int mode - , sizeof(random_a_and_b) // size_t length - , enc_random_b // unsigned char iv[8] - , random_a_and_b // const unsigned char *input - , random_a_and_b // unsigned char *output - ); - - PrintAndLog("enc(A+B):%s",sprint_hex(random_a_and_b, 16)); + // context, mode, length, IV, input, output + des3_crypt_cbc(&ctx, DES_ENCRYPT, sizeof(rnd_ab), enc_random_b, rnd_ab, rnd_ab); //Auth2 - UsbCommand d = {CMD_MIFAREUC_AUTH2, {cuid}}; - memcpy(d.d.asBytes,random_a_and_b, 16); - SendCommand(&d); - - UsbCommand respb; - if (WaitForResponseTimeout(CMD_ACK,&respb,1500)) { - uint8_t isOK = respb.arg[0] & 0xff; - uint8_t * data2= respb.d.asBytes; + c.cmd = CMD_MIFAREUC_AUTH2; + c.arg[0] = cuid; + memcpy(c.d.asBytes, rnd_ab, 16); + SendCommand(&c); - if (isOK){ - PrintAndLog("enc(RndA'):%s", sprint_hex(data2+1, 8)); - - uint8_t foo[8] = { 0 }; - uint8_t bar[8] = { 0 }; - memcpy(foo, data2+1, 8); - des3_set2key_dec(&ctx, key); - - des3_crypt_cbc(&ctx // des3_context *ctx - , DES_DECRYPT // int mode - , 8 // size_t length - , enc_random_b // unsigned char iv[8] - , foo // const unsigned char *input - , bar // unsigned char *output - ); + if ( !WaitForResponseTimeout(CMD_ACK, &resp, 1500)) return -1; + if ( !(resp.arg[0] & 0xff)) return -2; + + uint8_t enc_resp[8] = { 0 }; + uint8_t resp_random_a[8] = { 0 }; + memcpy(enc_resp, resp.d.asBytes+1, 8); - PrintAndLog("--> : %s : <-- Should be equal to our RndA",sprint_hex(bar, 8)); + des3_set2key_dec(&ctx, key); + // context, mode, length, IV, input, output + des3_crypt_cbc( &ctx, DES_DECRYPT, 8, enc_random_b, enc_resp, resp_random_a); - - } else { - return 2; - } - - } else { - PrintAndLog("Command execute timeout"); - return 1; - } + if ( !memcmp(resp_random_a, random_a, 8)) + return 1; return 0; + + //PrintAndLog(" RndA :%s", sprint_hex(random_a, 8)); + //PrintAndLog(" enc(RndB) :%s", sprint_hex(enc_random_b, 8)); + //PrintAndLog(" RndB :%s", sprint_hex(random_b, 8)); + //PrintAndLog(" A+B :%s", sprint_hex(random_a_and_b, 16)); + //PrintAndLog(" enc(A+B) :%s", sprint_hex(random_a_and_b, 16)); + //PrintAndLog(" enc(RndA') :%s", sprint_hex(data2+1, 8)); } + /** A test function to validate that the polarssl-function works the same was as the openssl-implementation. @@ -656,7 +712,7 @@ int CmdHF14AMfUCRdBl(const char *Cmd) return 1; } - if (blockNo > MAX_ULTRAC_BLOCKS ){ + if (blockNo > MAX_ULC_BLOCKS ){ PrintAndLog("Error: Maximum number of blocks is 47 for Ultralight-C"); return 1; } @@ -718,7 +774,7 @@ int CmdHF14AMfUCWrBl(const char *Cmd){ } blockNo = param_get8(Cmd, 0); - if (blockNo > MAX_ULTRAC_BLOCKS ){ + if (blockNo > MAX_ULC_BLOCKS ){ PrintAndLog("Error: Maximum number of blocks is 47 for Ultralight-C Cards!"); return 1; } @@ -1000,10 +1056,9 @@ static command_t CommandTable[] = {"crdbl", CmdHF14AMfUCRdBl, 0,"Read block - MIFARE Ultralight C"}, {"cwrbl", CmdHF14AMfUCWrBl, 0,"Write block - MIFARE Ultralight C"}, {"cauth", CmdHF14AMfucAuth, 0,"Ultralight C Authentication"}, - //{"testdes", CmdTestDES , 1, "Test DES"}, - {"setpwd", CmdHF14AMfucSetPwd , 1, "Set 3des password [Ultralight-C only]"}, - {"setuid", CmdHF14AMfucSetUid , 1, "Set UID"}, - {"gen", CmdHF14AMfuGenDiverseKeys , 1, "Generate 3des mifare diversified keys"}, + {"setpwd", CmdHF14AMfucSetPwd , 1, "Set 3des password [Ultralight-C only]"}, + {"setuid", CmdHF14AMfucSetUid , 1, "Set UID"}, + {"gen", CmdHF14AMfuGenDiverseKeys , 1, "Generate 3des mifare diversified keys"}, {NULL, NULL, 0, NULL} }; diff --git a/client/cmdhfmfu.h b/client/cmdhfmfu.h index ccb53ad0..72193390 100644 --- a/client/cmdhfmfu.h +++ b/client/cmdhfmfu.h @@ -17,6 +17,9 @@ int CmdHF14AMfucAuth(const char *Cmd); int CmdHF14AMfUDump(const char *Cmd); void rol (uint8_t *data, const size_t len); +uint8_t requestAuthentication( uint8_t *nonce); +int try3DesAuthentication( uint8_t *key); + int CmdHFMFUltra(const char *Cmd); int CmdHF14AMfUInfo(const char *Cmd); #endif -- 2.39.2