]> git.zerfleddert.de Git - proxmark3-svn/blobdiff - client/cmdhfmfu.c
Potential fix for 0-length usb packets seen on OSX
[proxmark3-svn] / client / cmdhfmfu.c
index 7f0e8fc5687a927fc0bd02793fbb2df81a3de54e..25a073d34440b2de98b3c56d67597dbc2df14111 100644 (file)
 #include "protocols.h"
 #include "data.h"
 
-#define MAX_UL_BLOCKS     0x0f
-#define MAX_ULC_BLOCKS    0x2b
-#define MAX_ULEV1a_BLOCKS 0x13
-#define MAX_ULEV1b_BLOCKS 0x28
-#define MAX_NTAG_203      0x29
-#define MAX_NTAG_210      0x13
-#define MAX_NTAG_212      0x28
-#define MAX_NTAG_213      0x2c
-#define MAX_NTAG_215      0x86
-#define MAX_NTAG_216      0xe6
+#define MAX_UL_BLOCKS      0x0f
+#define MAX_ULC_BLOCKS     0x2b
+#define MAX_ULEV1a_BLOCKS  0x13
+#define MAX_ULEV1b_BLOCKS  0x28
+#define MAX_NTAG_203       0x29
+#define MAX_NTAG_210       0x13
+#define MAX_NTAG_212       0x28
+#define MAX_NTAG_213       0x2c
+#define MAX_NTAG_215       0x86
+#define MAX_NTAG_216       0xe6
+#define MAX_MY_D_NFC       0xff
+#define MAX_MY_D_MOVE      0x25
+#define MAX_MY_D_MOVE_LEAN 0x0f
 
 #define KEYS_3DES_COUNT 7
 uint8_t default_3des_keys[KEYS_3DES_COUNT][16] = {
@@ -54,17 +57,18 @@ uint8_t default_pwd_pack[KEYS_PWD_COUNT][4] = {
        {0x32,0x0C,0x16,0x17}, // PACK 0x80,0x80 -- AMiiboo (sniffed) 
 };
 
-#define MAX_UL_TYPES 16
-uint16_t UL_TYPES_ARRAY[MAX_UL_TYPES] = {UNKNOWN, UL, UL_C, UL_EV1_48, UL_EV1_128, NTAG, NTAG_203,
-           NTAG_210, NTAG_212, NTAG_213, NTAG_215, NTAG_216, MY_D, MY_D_NFC, MY_D_MOVE, MY_D_MOVE_NFC};
+#define MAX_UL_TYPES 18
+uint32_t UL_TYPES_ARRAY[MAX_UL_TYPES] = {UNKNOWN, UL, UL_C, UL_EV1_48, UL_EV1_128, NTAG, NTAG_203,
+           NTAG_210, NTAG_212, NTAG_213, NTAG_215, NTAG_216, MY_D, MY_D_NFC, MY_D_MOVE, MY_D_MOVE_NFC, MY_D_MOVE_LEAN, FUDAN_UL};
 
 uint8_t UL_MEMORY_ARRAY[MAX_UL_TYPES] = {MAX_UL_BLOCKS, MAX_UL_BLOCKS, MAX_ULC_BLOCKS, MAX_ULEV1a_BLOCKS,
            MAX_ULEV1b_BLOCKS, MAX_NTAG_203, MAX_NTAG_203, MAX_NTAG_210, MAX_NTAG_212, MAX_NTAG_213,
-           MAX_NTAG_215, MAX_NTAG_216, MAX_UL_BLOCKS, MAX_UL_BLOCKS, MAX_UL_BLOCKS, MAX_UL_BLOCKS};
+           MAX_NTAG_215, MAX_NTAG_216, MAX_UL_BLOCKS, MAX_MY_D_NFC, MAX_MY_D_MOVE, MAX_MY_D_MOVE, MAX_MY_D_MOVE_LEAN, MAX_UL_BLOCKS};
 
 
 static int CmdHelp(const char *Cmd);
 
+// get version nxp product type 
 char *getProductTypeStr( uint8_t id){
 
        static char buf[20];
@@ -94,25 +98,28 @@ char *getUlev1CardSizeStr( uint8_t fsize ){
 
        // is  LSB set?
        if (  fsize & 1 )
-               sprintf(retStr, "%02X (%u <-> %u bytes)",fsize, usize, lsize);
+               sprintf(retStr, "%02X, (%u <-> %u bytes)",fsize, usize, lsize);
        else 
-               sprintf(retStr, "%02X (%u bytes)", fsize, lsize);               
+               sprintf(retStr, "%02X, (%u bytes)", fsize, lsize);              
        return buf;
 }
 
 static void ul_switch_on_field(void) {
        UsbCommand c = {CMD_READER_ISO_14443a, {ISO14A_CONNECT | ISO14A_NO_DISCONNECT, 0, 0}};
+       clearCommandBuffer();
        SendCommand(&c);
 }
 
 void ul_switch_off_field(void) {
        UsbCommand c = {CMD_READER_ISO_14443a, {0, 0, 0}};
+       clearCommandBuffer();
        SendCommand(&c);
 }
 
 static int ul_send_cmd_raw( uint8_t *cmd, uint8_t cmdlen, uint8_t *response, uint16_t responseLength ) {
        UsbCommand c = {CMD_READER_ISO_14443a, {ISO14A_RAW | ISO14A_NO_DISCONNECT | ISO14A_APPEND_CRC, cmdlen, 0}};
        memcpy(c.d.asBytes, cmd, cmdlen);
+       clearCommandBuffer();
        SendCommand(&c);
        UsbCommand resp;
        if (!WaitForResponseTimeout(CMD_ACK, &resp, 1500)) return -1;
@@ -129,6 +136,7 @@ static int ul_send_cmd_raw_crc( uint8_t *cmd, uint8_t cmdlen, uint8_t *response,
                c.arg[0] |= ISO14A_APPEND_CRC;
 
        memcpy(c.d.asBytes, cmd, cmdlen);       
+       clearCommandBuffer();
        SendCommand(&c);
        UsbCommand resp;
        if (!WaitForResponseTimeout(CMD_ACK, &resp, 1500)) return -1;
@@ -193,6 +201,7 @@ static int ulc_authentication( uint8_t *key, bool switch_off_field ){
 
        UsbCommand c = {CMD_MIFAREUC_AUTH, {switch_off_field}};
        memcpy(c.d.asBytes, key, 16);
+       clearCommandBuffer();
        SendCommand(&c);
        UsbCommand resp;
        if ( !WaitForResponseTimeout(CMD_ACK, &resp, 1500) ) return 0;
@@ -267,6 +276,38 @@ static int ulev1_readSignature( uint8_t *response, uint16_t responseLength ){
        return len;
 }
 
+
+// Fudan check checks for which error is given for a command with incorrect crc
+// NXP UL chip responds with 01, fudan 00.
+// other possible checks:
+//  send a0 + crc 
+//  UL responds with 00, fudan doesn't respond
+//  or
+//  send a200 + crc
+//  UL doesn't respond, fudan responds with 00
+//  or
+//  send 300000 + crc (read with extra byte(s))
+//  UL responds with read of page 0, fudan doesn't respond.
+//
+// make sure field is off before calling this function
+static int ul_fudan_check( void ){
+       iso14a_card_select_t card;
+       if ( !ul_select(&card) ) 
+               return UL_ERROR;
+
+       UsbCommand c = {CMD_READER_ISO_14443a, {ISO14A_RAW | ISO14A_NO_DISCONNECT, 4, 0}};
+
+       uint8_t cmd[4] = {0x30,0x00,0x02,0xa7}; //wrong crc on purpose  should be 0xa8
+       memcpy(c.d.asBytes, cmd, 4);
+       clearCommandBuffer();
+       SendCommand(&c);
+       UsbCommand resp;
+       if (!WaitForResponseTimeout(CMD_ACK, &resp, 1500)) return UL_ERROR;
+       if (resp.arg[0] != 1) return UL_ERROR;
+
+       return (!resp.d.asBytes[0]) ? FUDAN_UL : UL; //if response == 0x00 then Fudan, else Genuine NXP
+}
+
 static int ul_print_default( uint8_t *data){
 
        uint8_t uid[7];
@@ -279,13 +320,13 @@ static int ul_print_default( uint8_t *data){
        uid[6] = data[7];
 
        PrintAndLog("       UID : %s ", sprint_hex(uid, 7));
-       PrintAndLog("    UID[0] : %02X, Manufacturer: %s",  uid[0], getTagInfo(uid[0]) );
-       if ( uid[0] == 0x05 ) {
+       PrintAndLog("    UID[0] : %02X, %s",  uid[0], getTagInfo(uid[0]) );
+       if ( uid[0] == 0x05 && ((uid[1] & 0xf0) >> 4) == 2 ) { // is infineon and 66RxxP
                uint8_t chip = (data[8] & 0xC7); // 11000111  mask, bit 3,4,5 RFU
                switch (chip){
-                       case 0xc2: PrintAndLog("   IC type : SLE 66R04P"); break;
-                       case 0xc4: PrintAndLog("   IC type : SLE 66R16P"); break;
-                       case 0xc6: PrintAndLog("   IC type : SLE 66R32P"); break;
+                       case 0xc2: PrintAndLog("   IC type : SLE 66R04P 770 Bytes"); break; //77 pages
+                       case 0xc4: PrintAndLog("   IC type : SLE 66R16P 2560 Bytes"); break; //256 pages
+                       case 0xc6: PrintAndLog("   IC type : SLE 66R32P 5120 Bytes"); break; //512 pages /2 sectors
                }
        }
        // CT (cascade tag byte) 0x88 xor SN0 xor SN1 xor SN2 
@@ -371,13 +412,17 @@ int ul_print_type(uint32_t tagtype, uint8_t spaces){
        else if ( tagtype & NTAG_I2C_2K )       
                PrintAndLog("%sTYPE : NTAG I%sC 1904bytes (NT3H1201FHK)", spacer, "\xFD");
        else if ( tagtype & MY_D )
-               PrintAndLog("%sTYPE : INFINEON my-d\x99", spacer);
+               PrintAndLog("%sTYPE : INFINEON my-d\x99 (SLE 66RxxS)", spacer);
        else if ( tagtype & MY_D_NFC )
-               PrintAndLog("%sTYPE : INFINEON my-d\x99 NFC", spacer);
+               PrintAndLog("%sTYPE : INFINEON my-d\x99 NFC (SLE 66RxxP)", spacer);
        else if ( tagtype & MY_D_MOVE )
-               PrintAndLog("%sTYPE : INFINEON my-d\x99 move", spacer);
+               PrintAndLog("%sTYPE : INFINEON my-d\x99 move (SLE 66R01P)", spacer);
        else if ( tagtype & MY_D_MOVE_NFC )
-               PrintAndLog("%sTYPE : INFINEON my-d\x99 move NFC", spacer);
+               PrintAndLog("%sTYPE : INFINEON my-d\x99 move NFC (SLE 66R01P)", spacer);
+       else if ( tagtype & MY_D_MOVE_LEAN )
+               PrintAndLog("%sTYPE : INFINEON my-d\x99 move lean (SLE 66R01L)", spacer);
+       else if ( tagtype & FUDAN_UL )
+               PrintAndLog("%sTYPE : FUDAN Ultralight Compatible (or other compatible) %s", spacer, (tagtype & MAGIC) ? "<magic>" : "" );
        else
                PrintAndLog("%sTYPE : Unknown %06x", spacer, tagtype);
        return 0;
@@ -415,7 +460,7 @@ static int ulc_print_configuration( uint8_t *data){
        return 0;
 }
 
-static int ulev1_print_configuration( uint8_t *data){
+static int ulev1_print_configuration( uint8_t *data, uint8_t startPage){
 
        PrintAndLog("\n--- Tag Configuration");
 
@@ -425,13 +470,13 @@ static int ulev1_print_configuration( uint8_t *data){
        bool prot = (data[4] & 0x80);
        uint8_t vctid = data[5];
 
-       PrintAndLog("  cfg0 [16/0x10] : %s", sprint_hex(data, 4));
+       PrintAndLog("  cfg0 [%u/0x%02X] : %s", startPage, startPage, sprint_hex(data, 4));
        if ( data[3] < 0xff )
                PrintAndLog("                    - page %d and above need authentication",data[3]);
        else 
                PrintAndLog("                    - pages don't need authentication");
        PrintAndLog("                    - strong modulation mode %s", (strg_mod_en) ? "enabled":"disabled");
-       PrintAndLog("  cfg1 [17/0x11] : %s", sprint_hex(data+4, 4) );
+       PrintAndLog("  cfg1 [%u/0x%02X] : %s", startPage + 1, startPage + 1,  sprint_hex(data+4, 4) );
        if ( authlim == 0)
                PrintAndLog("                    - Unlimited password attempts");
        else
@@ -439,8 +484,9 @@ static int ulev1_print_configuration( uint8_t *data){
        PrintAndLog("                    - user configuration %s", cfglck ? "permanently locked":"writeable");
        PrintAndLog("                    - %s access is protected with password", prot ? "read and write":"write");
        PrintAndLog("                    - %02X, Virtual Card Type Identifier is %s default", vctid, (vctid==0x05)? "":"not");
-       PrintAndLog("  PWD  [18/0x12] : %s", sprint_hex(data+8, 4));
-       PrintAndLog("  PACK [19/0x13] : %s", sprint_hex(data+12, 4));
+       PrintAndLog("  PWD  [%u/0x%02X] : %s- (cannot be read)", startPage + 2, startPage + 2,  sprint_hex(data+8, 4));
+       PrintAndLog("  PACK [%u/0x%02X] : %s      - (cannot be read)", startPage + 3, startPage + 3,  sprint_hex(data+12, 2));
+       PrintAndLog("  RFU  [%u/0x%02X] :       %s- (cannot be read)", startPage + 3, startPage + 3,  sprint_hex(data+12, 2));
        return 0;
 }
 
@@ -462,7 +508,7 @@ static int ulev1_print_counters(){
 
 static int ulev1_print_signature( uint8_t *data, uint8_t len){
        PrintAndLog("\n--- Tag Signature");     
-       PrintAndLog("IC signature public key name  : NXP NTAG21x 2013"); // don't know if there is other NXP public keys.. :(
+       //PrintAndLog("IC signature public key name  : NXP NTAG21x 2013"); // don't know if there is other NXP public keys.. :(
        PrintAndLog("IC signature public key value : 04494e1a386d3d3cfe3dc10e5de68a499b1c202db5b132393e89ed19fe5be8bc61");
        PrintAndLog("    Elliptic curve parameters : secp128r1");
        PrintAndLog("            Tag ECC Signature : %s", sprint_hex(data, len));
@@ -600,7 +646,7 @@ uint32_t GetHF14AMfU_Type(void){
                                        tagtype = UL;
                                } else {
                                        // read page 0x30 (should error if it is a ntag203)
-                                       status = ul_read(30, data, sizeof(data));
+                                       status = ul_read(0x30, data, sizeof(data));
                                        if ( status <= 1 ){
                                                tagtype = NTAG_203;
                                        } else {
@@ -610,17 +656,23 @@ uint32_t GetHF14AMfU_Type(void){
                                ul_switch_off_field();
                        }
                }
+               if (tagtype & UL) {
+                       tagtype = ul_fudan_check(); 
+                       ul_switch_off_field();
+               }
        } else {
+               ul_switch_off_field();
                // Infinition MY-D tests   Exam high nibble 
                uint8_t nib = (card.uid[1] & 0xf0) >> 4;
                switch ( nib ){
-                       case 1: tagtype =  MY_D; break;
-                       case 2: tagtype = (MY_D | MY_D_NFC); break; //notice: we can not currently distinguish between these two
-                       case 3: tagtype = (MY_D_MOVE | MY_D_MOVE_NFC); break; //notice: we can not currently distinguish between these two
+                       // case 0: tagtype =  SLE66R35E7; break; //or SLE 66R35E7 - mifare compat... should have different sak/atqa for mf 1k
+                       case 1: tagtype =  MY_D; break; //or SLE 66RxxS ... up to 512 pages of 8 user bytes...
+                       case 2: tagtype = (MY_D_NFC); break; //or SLE 66RxxP ... up to 512 pages of 8 user bytes... (or in nfc mode FF pages of 4 bytes)
+                       case 3: tagtype = (MY_D_MOVE | MY_D_MOVE_NFC); break; //or SLE 66R01P // 38 pages of 4 bytes //notice: we can not currently distinguish between these two
+                       case 7: tagtype =  MY_D_MOVE_LEAN; break; //or SLE 66R01L  // 16 pages of 4 bytes
                }
        }
 
-
        tagtype |= ul_magic_test();
        if (tagtype == (UNKNOWN | MAGIC)) tagtype = (UL_MAGIC);
        return tagtype;
@@ -631,16 +683,19 @@ int CmdHF14AMfUInfo(const char *Cmd){
        uint8_t authlim = 0xff;
        uint8_t data[16] = {0x00};
        iso14a_card_select_t card;
-       uint8_t *key;
        int status;
        bool errors = false;
        bool hasAuthKey = false;
        bool locked = false;
+       bool swapEndian = false;
        uint8_t cmdp = 0;
-       uint8_t datalen = 0;
+       uint8_t dataLen = 0;
        uint8_t authenticationkey[16] = {0x00};
+       uint8_t *authkeyptr = authenticationkey;
+       uint8_t *key;
        uint8_t pack[4] = {0,0,0,0};
-       int len=0;
+       int len = 0;
+       char tempStr[50];
 
        while(param_getchar(Cmd, cmdp) != 0x00)
        {
@@ -651,23 +706,21 @@ int CmdHF14AMfUInfo(const char *Cmd){
                        return usage_hf_mfu_info();
                case 'k':
                case 'K':
-                       // EV1/NTAG size key
-                       datalen = param_gethex(Cmd, cmdp+1, data, 8);
-                       if ( !datalen ) {
-                               memcpy(authenticationkey, data, 4);
-                               cmdp += 2;
-                               hasAuthKey = true;
-                               break;
-                       }
-                       // UL-C size key        
-                       datalen = param_gethex(Cmd, cmdp+1, data, 32);
-                       if (!datalen){
-                               memcpy(authenticationkey, data, 16);
-                               cmdp += 2;
-                               hasAuthKey = true;
-                               break;
+                       dataLen = param_getstr(Cmd, cmdp+1, tempStr);
+                       if (dataLen == 32 || dataLen == 8) { //ul-c or ev1/ntag key length
+                               errors = param_gethex(tempStr, 0, authenticationkey, dataLen);
+                               dataLen /= 2; // handled as bytes from now on
+                       } else {
+                               PrintAndLog("\nERROR: Key is incorrect length\n");
+                               errors = true;
                        }
-                       errors = true; 
+                       cmdp += 2;
+                       hasAuthKey = true;
+                       break;
+               case 'l':
+               case 'L':
+                       swapEndian = true;
+                       cmdp++;
                        break;
                default:
                        PrintAndLog("Unknown parameter '%c'", param_getchar(Cmd, cmdp));
@@ -679,7 +732,7 @@ int CmdHF14AMfUInfo(const char *Cmd){
 
        //Validations
        if(errors) return usage_hf_mfu_info();
-       
+
        TagTypeUL_t tagtype = GetHF14AMfU_Type();
        if (tagtype == UL_ERROR) return -1;
 
@@ -687,7 +740,10 @@ int CmdHF14AMfUInfo(const char *Cmd){
        PrintAndLog("-------------------------------------------------------------");
        ul_print_type(tagtype, 6);
 
-       if (!ul_auth_select( &card, tagtype, hasAuthKey, authenticationkey, pack, sizeof(pack))) return -1;
+       // Swap endianness 
+       if (swapEndian && hasAuthKey) authkeyptr = SwapEndian64(authenticationkey, dataLen, (dataLen == 16) ? 8 : 4 );
+
+       if (!ul_auth_select( &card, tagtype, hasAuthKey, authkeyptr, pack, sizeof(pack))) return -1;
 
        // read pages 0,1,2,3 (should read 4pages)
        status = ul_read(0, data, sizeof(data));
@@ -698,7 +754,7 @@ int CmdHF14AMfUInfo(const char *Cmd){
        } else if (status == 16) {
                ul_print_default(data);
                ndef_print_CC(data+12);
-       }       else {
+       } else {
                locked = true;
        }
 
@@ -732,6 +788,7 @@ int CmdHF14AMfUInfo(const char *Cmd){
                        // if we called info with key, just return 
                        if ( hasAuthKey ) return 1;
 
+                       // also try to diversify default keys..  look into CmdHF14AMfuGenDiverseKeys
                        PrintAndLog("Trying some default 3des keys");
                        for (uint8_t i = 0; i < KEYS_3DES_COUNT; ++i ) {
                                key = default_3des_keys[i];
@@ -740,11 +797,10 @@ int CmdHF14AMfUInfo(const char *Cmd){
                                        uint8_t keySwap[16];
                                        memcpy(keySwap, SwapEndian64(key,16,8), 16);
                                        ulc_print_3deskey(keySwap);
-                                       break;
+                                       return 1;
                                } 
                        }
-                       // reselect for future tests (ntag test)
-                       if (!ul_auth_select( &card, tagtype, hasAuthKey, authenticationkey, pack, sizeof(pack))) return -1;
+                       return 1;
                }
        }
 
@@ -754,7 +810,7 @@ int CmdHF14AMfUInfo(const char *Cmd){
        if ((tagtype & (UL_EV1_48 | UL_EV1_128))) {
                if (ulev1_print_counters() != 3) {
                        // failed - re-select
-                       if (!ul_auth_select( &card, tagtype, hasAuthKey, authenticationkey, pack, sizeof(pack))) return -1;
+                       if (!ul_auth_select( &card, tagtype, hasAuthKey, authkeyptr, pack, sizeof(pack))) return -1;
                }
        }
 
@@ -769,7 +825,7 @@ int CmdHF14AMfUInfo(const char *Cmd){
                if (status == 32) ulev1_print_signature( ulev1_signature, sizeof(ulev1_signature));
                else {
                        // re-select
-                       if (!ul_auth_select( &card, tagtype, hasAuthKey, authenticationkey, pack, sizeof(pack))) return -1;
+                       if (!ul_auth_select( &card, tagtype, hasAuthKey, authkeyptr, pack, sizeof(pack))) return -1;
                }
        }
 
@@ -784,7 +840,7 @@ int CmdHF14AMfUInfo(const char *Cmd){
                        ulev1_print_version(version);
                } else {
                        locked = true;
-                       if (!ul_auth_select( &card, tagtype, hasAuthKey, authenticationkey, pack, sizeof(pack))) return -1;
+                       if (!ul_auth_select( &card, tagtype, hasAuthKey, authkeyptr, pack, sizeof(pack))) return -1;
                }
 
                uint8_t startconfigblock = 0;
@@ -803,7 +859,7 @@ int CmdHF14AMfUInfo(const char *Cmd){
                        } else if (status == 16) {
                                // save AUTHENTICATION LIMITS for later:
                                authlim = (ulev1_conf[4] & 0x07);
-                               ulev1_print_configuration(ulev1_conf);
+                               ulev1_print_configuration(ulev1_conf, startconfigblock);
                        }
                }
 
@@ -821,7 +877,7 @@ int CmdHF14AMfUInfo(const char *Cmd){
                                        PrintAndLog("Found a default password: %s || Pack: %02X %02X",sprint_hex(key, 4), pack[0], pack[1]);
                                        break;
                                } else {
-                                       if (!ul_auth_select( &card, tagtype, hasAuthKey, authenticationkey, pack, sizeof(pack))) return -1;
+                                       if (!ul_auth_select( &card, tagtype, hasAuthKey, authkeyptr, pack, sizeof(pack))) return -1;
                                }
                        }
                        if (len < 1) PrintAndLog("password not known");
@@ -835,105 +891,239 @@ int CmdHF14AMfUInfo(const char *Cmd){
 }
 
 //
-//  Mifare Ultralight Write Single Block
+//  Write Single Block
 //
 int CmdHF14AMfUWrBl(const char *Cmd){
-       uint8_t blockNo    = -1;
-       bool chinese_card  = FALSE;
-       uint8_t bldata[16] = {0x00};
-       UsbCommand resp;
 
-       char cmdp = param_getchar(Cmd, 0);
-       if (strlen(Cmd) < 3 || cmdp == 'h' || cmdp == 'H') {
-               PrintAndLog("Usage:  hf mfu wrbl <block number> <block data (8 hex symbols)> [w]");
-               PrintAndLog("       [block number]");
-               PrintAndLog("       [block data] - (8 hex symbols)");
-               PrintAndLog("       [w] - Chinese magic ultralight tag");
-               PrintAndLog("");
-               PrintAndLog("        sample: hf mfu wrbl 0 01020304");
-               PrintAndLog("");                
-               return 0;
-       }       
-       
-       blockNo = param_get8(Cmd, 0);
+       int blockNo = -1;
+       bool errors = false;
+       bool hasAuthKey = false;
+       bool hasPwdKey = false;
+       bool swapEndian = false;
 
-       if (blockNo > MAX_UL_BLOCKS){
-               PrintAndLog("Error: Maximum number of blocks is 15 for Ultralight Cards!");
-               return 1;
+       uint8_t cmdp = 0;
+       uint8_t keylen = 0;
+       uint8_t blockdata[20] = {0x00};
+       uint8_t data[16] = {0x00};
+       uint8_t authenticationkey[16] = {0x00};
+       uint8_t *authKeyPtr = authenticationkey;
+
+       while(param_getchar(Cmd, cmdp) != 0x00)
+       {
+               switch(param_getchar(Cmd, cmdp))
+               {
+                       case 'h':
+                       case 'H':
+                               return usage_hf_mfu_wrbl();
+                       case 'k':
+                       case 'K':
+                               // EV1/NTAG size key
+                               keylen = param_gethex(Cmd, cmdp+1, data, 8);
+                               if ( !keylen ) {
+                                       memcpy(authenticationkey, data, 4);
+                                       cmdp += 2;
+                                       hasPwdKey = true;
+                                       break;
+                               }
+                               // UL-C size key        
+                               keylen = param_gethex(Cmd, cmdp+1, data, 32);
+                               if (!keylen){
+                                       memcpy(authenticationkey, data, 16);
+                                       cmdp += 2;
+                                       hasAuthKey = true;
+                                       break;
+                               }
+                               PrintAndLog("\nERROR: Key is incorrect length\n");
+                               errors = true; 
+                               break;
+                       case 'b':
+                       case 'B':
+                               blockNo = param_get8(Cmd, cmdp+1);
+                               if (blockNo < 0) {
+                                       PrintAndLog("Wrong block number");
+                                       errors = true;
+                               }
+                               cmdp += 2;
+                               break;
+                       case 'l':
+                       case 'L':
+                               swapEndian = true;
+                               cmdp++; 
+                               break;
+                       case 'd':
+                       case 'D':
+                               if ( param_gethex(Cmd, cmdp+1, blockdata, 8) ) {
+                                       PrintAndLog("Block data must include 8 HEX symbols");
+                                       errors = true;
+                                       break;
+                               }
+                               cmdp += 2;
+                               break;
+                       default:
+                               PrintAndLog("Unknown parameter '%c'", param_getchar(Cmd, cmdp));
+                               errors = true;
+                               break;
+               }
+               //Validations
+               if(errors) return usage_hf_mfu_wrbl();
        }
-       
-       if (param_gethex(Cmd, 1, bldata, 8)) {
-               PrintAndLog("Block data must include 8 HEX symbols");
-               return 1;
+
+       if ( blockNo == -1 ) return usage_hf_mfu_wrbl();
+       // starting with getting tagtype
+       TagTypeUL_t tagtype = GetHF14AMfU_Type();
+       if (tagtype == UL_ERROR) return -1;
+
+       uint8_t maxblockno = 0;
+       for (uint8_t idx = 0; idx < MAX_UL_TYPES; idx++){
+               if (tagtype & UL_TYPES_ARRAY[idx])
+                       maxblockno = UL_MEMORY_ARRAY[idx];
        }
-       
-       if (strchr(Cmd,'w') != 0  || strchr(Cmd,'W') != 0 ) {
-               chinese_card = TRUE; 
+       if (blockNo > maxblockno){
+               PrintAndLog("block number too large. Max block is %u/0x%02X \n", maxblockno,maxblockno);
+               return usage_hf_mfu_wrbl();
        }
-       
-       if ( blockNo <= 3) {
-               if (!chinese_card){
-                       PrintAndLog("Access Denied");
-               } else {
-                       PrintAndLog("--specialblock no:%02x", blockNo);
-                       PrintAndLog("--data: %s", sprint_hex(bldata, 4));
-                       UsbCommand d = {CMD_MIFAREU_WRITEBL, {blockNo}};
-                       memcpy(d.d.asBytes,bldata, 4);
-                       SendCommand(&d);
-                       if (WaitForResponseTimeout(CMD_ACK,&resp,1500)) {
-                               uint8_t isOK  = resp.arg[0] & 0xff;
-                               PrintAndLog("isOk:%02x", isOK);
-                       } else {
-                               PrintAndLog("Command execute timeout");
-                       }  
-               }
+
+       // Swap endianness 
+       if (swapEndian && hasAuthKey) authKeyPtr = SwapEndian64(authenticationkey, 16, 8);
+       if (swapEndian && hasPwdKey)  authKeyPtr = SwapEndian64(authenticationkey, 4, 4);
+
+       if ( blockNo <= 3)
+               PrintAndLog("Special Block: %0d (0x%02X) [ %s]", blockNo, blockNo, sprint_hex(blockdata, 4));
+       else
+               PrintAndLog("Block: %0d (0x%02X) [ %s]", blockNo, blockNo, sprint_hex(blockdata, 4));
+
+       //Send write Block
+       UsbCommand c = {CMD_MIFAREU_WRITEBL, {blockNo}};
+       memcpy(c.d.asBytes,blockdata,4);
+
+       if ( hasAuthKey ) {
+               c.arg[1] = 1;
+               memcpy(c.d.asBytes+4,authKeyPtr,16);
+       }
+       else if ( hasPwdKey ) {
+               c.arg[1] = 2;
+               memcpy(c.d.asBytes+4,authKeyPtr,4);
+       }
+
+       clearCommandBuffer();
+       SendCommand(&c);
+       UsbCommand resp;
+       if (WaitForResponseTimeout(CMD_ACK,&resp,1500)) {
+               uint8_t isOK  = resp.arg[0] & 0xff;
+               PrintAndLog("isOk:%02x", isOK);
        } else {
-               PrintAndLog("--block no:%02x", blockNo);
-               PrintAndLog("--data: %s", sprint_hex(bldata, 4));               
-               UsbCommand e = {CMD_MIFAREU_WRITEBL, {blockNo}};
-               memcpy(e.d.asBytes,bldata, 4);
-               SendCommand(&e);
-               if (WaitForResponseTimeout(CMD_ACK,&resp,1500)) {
-                       uint8_t isOK  = resp.arg[0] & 0xff;
-                       PrintAndLog("isOk:%02x", isOK);
-               } else {
-                       PrintAndLog("Command execute timeout");
-               }
+               PrintAndLog("Command execute timeout");
        }
+
        return 0;
 }
-
 //
-//  Mifare Ultralight Read Single Block
+//  Read Single Block
 //
 int CmdHF14AMfURdBl(const char *Cmd){
 
-       UsbCommand resp;
-       uint8_t blockNo = -1;   
-       char cmdp = param_getchar(Cmd, 0);
-       
-       if (strlen(Cmd) < 1 || cmdp == 'h' || cmdp == 'H') {    
-               PrintAndLog("Usage:  hf mfu rdbl <block number>");
-               PrintAndLog("        sample: hfu mfu rdbl 0");
-               return 0;
+       int blockNo = -1;       
+       bool errors = false;
+       bool hasAuthKey = false;
+       bool hasPwdKey = false;
+       bool swapEndian = false;
+       uint8_t cmdp = 0;
+       uint8_t keylen = 0;
+       uint8_t data[16] = {0x00};
+       uint8_t authenticationkey[16] = {0x00};
+       uint8_t *authKeyPtr = authenticationkey;
+
+       while(param_getchar(Cmd, cmdp) != 0x00)
+       {
+               switch(param_getchar(Cmd, cmdp))
+               {
+                       case 'h':
+                       case 'H':
+                               return usage_hf_mfu_rdbl();
+                       case 'k':
+                       case 'K':
+                               // EV1/NTAG size key
+                               keylen = param_gethex(Cmd, cmdp+1, data, 8);
+                               if ( !keylen ) {
+                                       memcpy(authenticationkey, data, 4);
+                                       cmdp += 2;
+                                       hasPwdKey = true;
+                                       break;
+                               }
+                               // UL-C size key        
+                               keylen = param_gethex(Cmd, cmdp+1, data, 32);
+                               if (!keylen){
+                                       memcpy(authenticationkey, data, 16);
+                                       cmdp += 2;
+                                       hasAuthKey = true;
+                                       break;
+                               }
+                               PrintAndLog("\nERROR: Key is incorrect length\n");
+                               errors = true; 
+                               break;
+                       case 'b':
+                       case 'B':
+                               blockNo = param_get8(Cmd, cmdp+1);
+                               if (blockNo < 0) {
+                                       PrintAndLog("Wrong block number");
+                                       errors = true;
+                               }
+                               cmdp += 2;
+                               break;
+                       case 'l':
+                       case 'L':
+                               swapEndian = true;
+                               cmdp++;
+                               break;
+                       default:
+                               PrintAndLog("Unknown parameter '%c'", param_getchar(Cmd, cmdp));
+                               errors = true;
+                               break;
+               }
+               //Validations
+               if(errors) return usage_hf_mfu_rdbl();
        }
 
-       blockNo = param_get8(Cmd, 0);
+       if ( blockNo == -1 ) return usage_hf_mfu_rdbl();
+       // start with getting tagtype
+       TagTypeUL_t tagtype = GetHF14AMfU_Type();
+       if (tagtype == UL_ERROR) return -1;
 
-       if (blockNo > MAX_UL_BLOCKS){
-               PrintAndLog("Error: Maximum number of blocks is 15 for Ultralight");
-               return 1;
+       uint8_t maxblockno = 0;
+       for (uint8_t idx = 0; idx < MAX_UL_TYPES; idx++){
+               if (tagtype & UL_TYPES_ARRAY[idx])
+                       maxblockno = UL_MEMORY_ARRAY[idx];
+       }
+       if (blockNo > maxblockno){
+               PrintAndLog("block number to large. Max block is %u/0x%02X \n", maxblockno,maxblockno);
+               return usage_hf_mfu_rdbl();
        }
 
-       UsbCommand c = {CMD_MIFAREU_READBL, {blockNo}};
-       SendCommand(&c);
+       // Swap endianness 
+       if (swapEndian && hasAuthKey) authKeyPtr = SwapEndian64(authenticationkey, 16, 8);
+       if (swapEndian && hasPwdKey)  authKeyPtr = SwapEndian64(authenticationkey, 4, 4);
 
+       //Read Block
+       UsbCommand c = {CMD_MIFAREU_READBL, {blockNo}};
+       if ( hasAuthKey ){
+               c.arg[1] = 1;
+               memcpy(c.d.asBytes,authKeyPtr,16);
+       }
+       else if ( hasPwdKey ) {
+               c.arg[1] = 2;
+               memcpy(c.d.asBytes,authKeyPtr,4);
+       }
 
+       clearCommandBuffer();
+       SendCommand(&c);
+       UsbCommand resp;
        if (WaitForResponseTimeout(CMD_ACK,&resp,1500)) {
                uint8_t isOK = resp.arg[0] & 0xff;
                if (isOK) {
                        uint8_t *data = resp.d.asBytes;
-                       PrintAndLog("Block: %0d (0x%02X) [ %s]", (int)blockNo, blockNo, sprint_hex(data, 4));
+                       PrintAndLog("\nBlock#  | Data        | Ascii");
+                       PrintAndLog("-----------------------------");
+                       PrintAndLog("%02d/0x%02X | %s| %.4s\n", blockNo, blockNo, sprint_hex(data, 4), data);
                }
                else {
                        PrintAndLog("Failed reading block: (%02x)", isOK);
@@ -941,36 +1131,36 @@ int CmdHF14AMfURdBl(const char *Cmd){
        } else {
                PrintAndLog("Command execute time-out");
        }
-
        return 0;
 }
 
-int usage_hf_mfu_info(void)
-{
+int usage_hf_mfu_info(void) {
        PrintAndLog("It gathers information about the tag and tries to detect what kind it is.");
        PrintAndLog("Sometimes the tags are locked down, and you may need a key to be able to read the information");
        PrintAndLog("The following tags can be identified:\n");
-       PrintAndLog("Ultralight, Ultralight-C, Ultralight EV1");
-       PrintAndLog("NTAG 213, NTAG 215, NTAG 216");
+       PrintAndLog("Ultralight, Ultralight-C, Ultralight EV1, NTAG 203, NTAG 210,");
+       PrintAndLog("NTAG 212, NTAG 213, NTAG 215, NTAG 216, NTAG I2C 1K & 2K");
        PrintAndLog("my-d, my-d NFC, my-d move, my-d move NFC\n");
-       PrintAndLog("Usage:  hf mfu info k <key>");
+       PrintAndLog("Usage:  hf mfu info k <key> l");
        PrintAndLog("  Options : ");
-       PrintAndLog("  k <key> : key for authentication [UL-C 16bytes, EV1/NTAG 4bytes]");
+       PrintAndLog("  k <key> : (optional) key for authentication [UL-C 16bytes, EV1/NTAG 4bytes]");
+       PrintAndLog("  l       : (optional) swap entered key's endianness");
        PrintAndLog("");
        PrintAndLog("   sample : hf mfu info");
-       PrintAndLog("          : hf mfu info k 11223344");
+       PrintAndLog("          : hf mfu info k 00112233445566778899AABBCCDDEEFF");
+       PrintAndLog("          : hf mfu info k AABBCCDDD");
        return 0;
 }
 
-int usage_hf_mfu_dump(void)
-{
+int usage_hf_mfu_dump(void) {
        PrintAndLog("Reads all pages from Ultralight, Ultralight-C, Ultralight EV1");
+       PrintAndLog("NTAG 203, NTAG 210, NTAG 212, NTAG 213, NTAG 215, NTAG 216");
        PrintAndLog("and saves binary dump into the file `filename.bin` or `cardUID.bin`");
        PrintAndLog("It autodetects card type.\n");     
-       PrintAndLog("Usage:  hf mfu dump l k <key> n <filename w/o .bin>");
+       PrintAndLog("Usage:  hf mfu dump k <key> l n <filename w/o .bin>");
        PrintAndLog("  Options : ");
-       PrintAndLog("  k <key> : key for authentication [UL-C 16bytes, EV1/NTAG 4bytes]");
-       PrintAndLog("  l       : swap entered key's endianness for auth");
+       PrintAndLog("  k <key> : (optional) key for authentication [UL-C 16bytes, EV1/NTAG 4bytes]");
+       PrintAndLog("  l       : (optional) swap entered key's endianness");
        PrintAndLog("  n <FN > : filename w/o .bin to save the dump as");       
        PrintAndLog("  p <Pg > : starting Page number to manually set a page to start the dump at");    
        PrintAndLog("  q <qty> : number of Pages to manually set how many pages to dump");      
@@ -979,6 +1169,35 @@ int usage_hf_mfu_dump(void)
        PrintAndLog("   sample : hf mfu dump");
        PrintAndLog("          : hf mfu dump n myfile");
        PrintAndLog("          : hf mfu dump k 00112233445566778899AABBCCDDEEFF");
+       PrintAndLog("          : hf mfu dump k AABBCCDDD\n");
+       return 0;
+}
+
+int usage_hf_mfu_rdbl(void) {
+       PrintAndLog("Read a block and print. It autodetects card type.\n");     
+       PrintAndLog("Usage:  hf mfu rdbl b <block number> k <key> l\n");
+       PrintAndLog("  Options:");
+       PrintAndLog("  b <no>  : block to read");
+       PrintAndLog("  k <key> : (optional) key for authentication [UL-C 16bytes, EV1/NTAG 4bytes]");
+       PrintAndLog("  l       : (optional) swap entered key's endianness");    
+       PrintAndLog("");
+       PrintAndLog("   sample : hf mfu rdbl b 0");
+       PrintAndLog("          : hf mfu rdbl b 0 k 00112233445566778899AABBCCDDEEFF");
+       PrintAndLog("          : hf mfu rdbl b 0 k AABBCCDDD\n");
+       return 0;
+}
+
+int usage_hf_mfu_wrbl(void) {
+       PrintAndLog("Write a block. It autodetects card type.\n");              
+       PrintAndLog("Usage:  hf mfu wrbl b <block number> d <data> k <key> l\n");
+       PrintAndLog("  Options:");
+       PrintAndLog("  b <no>   : block to write");
+       PrintAndLog("  d <data> : block data - (8 hex symbols)");
+       PrintAndLog("  k <key>  : (optional) key for authentication [UL-C 16bytes, EV1/NTAG 4bytes]");
+       PrintAndLog("  l        : (optional) swap entered key's endianness");   
+       PrintAndLog("");
+       PrintAndLog("    sample : hf mfu wrbl b 0 d 01234567");
+       PrintAndLog("           : hf mfu wrbl b 0 d 01234567 k AABBCCDDD\n");
        return 0;
 }
 
@@ -997,14 +1216,14 @@ int CmdHF14AMfUDump(const char *Cmd){
        bool bit[16]  = {0x00};
        bool bit2[16] = {0x00};
        uint8_t data[1024] = {0x00};
-       bool hasPwd = false;
+       bool hasAuthKey = false;
        int i = 0;
        int Pages = 16;
        bool tmplockbit = false;
-       uint8_t dataLen=0;
-       uint8_t cmdp =0;
-       uint8_t key[16] = {0x00};
-       uint8_t *keyPtr = key;
+       uint8_t dataLen = 0;
+       uint8_t cmdp = 0;
+       uint8_t authenticationkey[16] = {0x00};
+       uint8_t *authKeyPtr = authenticationkey;
        size_t fileNlen = 0;
        bool errors = false;
        bool swapEndian = false;
@@ -1022,17 +1241,15 @@ int CmdHF14AMfUDump(const char *Cmd){
                case 'k':
                case 'K':
                        dataLen = param_getstr(Cmd, cmdp+1, tempStr);
-                       if (dataLen == 32) //ul-c
-                               errors = param_gethex(tempStr, 0, key, dataLen);
-                       else if (dataLen == 8) //ev1/ntag
-                               errors = param_gethex(tempStr, 0, key, dataLen);
-                       else{
+                       if (dataLen == 32 || dataLen == 8) { //ul-c or ev1/ntag key length
+                               errors = param_gethex(tempStr, 0, authenticationkey, dataLen);
+                               dataLen /= 2;
+                       } else {
                                PrintAndLog("\nERROR: Key is incorrect length\n");
                                errors = true;
                        }
-                               
                        cmdp += 2;
-                       hasPwd = true;
+                       hasAuthKey = true;
                        break;
                case 'l':
                case 'L':
@@ -1069,28 +1286,30 @@ int CmdHF14AMfUDump(const char *Cmd){
        //Validations
        if(errors) return usage_hf_mfu_dump();
 
-       if (swapEndian && dataLen == 32)
-               keyPtr = SwapEndian64(data, 16, 8);
+       if (swapEndian && hasAuthKey) 
+               authKeyPtr = SwapEndian64(authenticationkey, dataLen, (dataLen == 16) ? 8 : 4);
 
        TagTypeUL_t tagtype = GetHF14AMfU_Type();
        if (tagtype == UL_ERROR) return -1;
 
-       if (!manualPages)
+       if (!manualPages) //get number of pages to read
                for (uint8_t idx = 0; idx < MAX_UL_TYPES; idx++)
                        if (tagtype & UL_TYPES_ARRAY[idx])
-                               Pages = UL_MEMORY_ARRAY[idx]+1;
+                               Pages = UL_MEMORY_ARRAY[idx]+1; //add one as maxblks starts at 0
 
        ul_print_type(tagtype, 0);
        PrintAndLog("Reading tag memory...");
        UsbCommand c = {CMD_MIFAREU_READCARD, {startPage,Pages}};
-       if ( hasPwd ) {
+       if ( hasAuthKey ) {
                if (tagtype & UL_C)
                        c.arg[2] = 1; //UL_C auth
                else
                        c.arg[2] = 2; //UL_EV1/NTAG auth
 
-               memcpy(c.d.asBytes, key, dataLen/2);
+               memcpy(c.d.asBytes, authKeyPtr, dataLen);
        }
+
+       clearCommandBuffer();
        SendCommand(&c);
        UsbCommand resp;
        if (!WaitForResponseTimeout(CMD_ACK, &resp,1500)) {
@@ -1102,12 +1321,13 @@ int CmdHF14AMfUDump(const char *Cmd){
                return 1;
        }
 
+       uint32_t startindex = resp.arg[2];
        uint32_t bufferSize = resp.arg[1];
        if (bufferSize > sizeof(data)) {
                PrintAndLog("Data exceeded Buffer size!");
                bufferSize = sizeof(data);
        }
-       GetFromBigBuf(data, bufferSize, 0);
+       GetFromBigBuf(data, bufferSize, startindex);
        WaitForResponse(CMD_ACK,NULL);
 
        Pages = bufferSize/4;
@@ -1133,26 +1353,35 @@ int CmdHF14AMfUDump(const char *Cmd){
        }
 
        // add keys to block dump
-       if (hasPwd && (tagtype & UL_C)) { //UL_C
-               memcpy(data + Pages*4, key, dataLen/2);
-               Pages += 4;
-       } else if (hasPwd) { //not sure output is in correct location.
-               memcpy(data + Pages*4, key, dataLen/2);
-               Pages += 1;
+       if (hasAuthKey) {
+               if (!swapEndian){
+                       authKeyPtr = SwapEndian64(authenticationkey, dataLen, (dataLen == 16) ? 8 : 4);
+               } else {
+                       authKeyPtr = authenticationkey;
+               }
+
+               if (tagtype & UL_C){ //add 4 pages
+                       memcpy(data + Pages*4, authKeyPtr, dataLen);
+                       Pages += dataLen/4;  
+               } else { // 2nd page from end
+                       memcpy(data + (Pages*4) - 8, authenticationkey, dataLen);
+               }
        }
 
+       PrintAndLog("\nBlock#  | Data        |lck| Ascii");
+       PrintAndLog("---------------------------------");
        for (i = 0; i < Pages; ++i) {
                if ( i < 3 ) {
-                       PrintAndLog("Block %02x:%s ", i,sprint_hex(data + i * 4, 4));
+                       PrintAndLog("%02d/0x%02X | %s|   | ", i+startPage, i+startPage, sprint_hex(data + i * 4, 4));
                        continue;
                }
                switch(i){
                        case 3: tmplockbit = bit[4]; break;
-                       case 4: tmplockbit = bit[3]; break;
-                       case 5: tmplockbit = bit[2]; break;
-                       case 6: tmplockbit = bit[1]; break;
-                       case 7: tmplockbit = bit[0]; break;
-                       case 8: tmplockbit = bit[15]; break;
+                       case 4: tmplockbit = bit[3]; break;
+                       case 5: tmplockbit = bit[2]; break;
+                       case 6: tmplockbit = bit[1]; break;
+                       case 7: tmplockbit = bit[0]; break;
+                       case 8: tmplockbit = bit[15]; break;
                        case 9: tmplockbit = bit[14]; break;
                        case 10: tmplockbit = bit[13]; break;
                        case 11: tmplockbit = bit[12]; break;
@@ -1171,7 +1400,7 @@ int CmdHF14AMfUDump(const char *Cmd){
                        case 24:
                        case 25:
                        case 26:
-                       case 27: tmplockbit = bit2[4]; break;               
+                       case 27: tmplockbit = bit2[4]; break;
                        case 28:
                        case 29:
                        case 30:
@@ -1190,8 +1419,9 @@ int CmdHF14AMfUDump(const char *Cmd){
                        case 43: tmplockbit = bit2[9]; break;  //auth1
                        default: break;
                }
-               PrintAndLog("Block %02x:%s [%d]", i,sprint_hex(data + i * 4, 4),tmplockbit);
-       }  
+               PrintAndLog("%02d/0x%02X | %s| %d | %.4s", i+startPage, i+startPage, sprint_hex(data + i * 4, 4), tmplockbit, data+i*4);
+       }
+       PrintAndLog("---------------------------------");
 
        // user supplied filename?
        if (fileNlen < 1) {
@@ -1204,7 +1434,7 @@ int CmdHF14AMfUDump(const char *Cmd){
 
        if ((fout = fopen(filename,"wb")) == NULL) { 
                PrintAndLog("Could not create file name %s", filename);
-               return 1;       
+               return 1;
        }
        fwrite( data, 1, Pages*4, fout );
        fclose(fout);
@@ -1357,142 +1587,6 @@ int CmdTestDES(const char * cmd)
 }
 **/
 
-//
-// Ultralight C Read Single Block
-//
-int CmdHF14AMfUCRdBl(const char *Cmd)
-{
-       UsbCommand resp;
-       bool hasPwd = FALSE;
-       uint8_t blockNo = -1;
-       uint8_t key[16];
-       char cmdp = param_getchar(Cmd, 0);
-
-       if (strlen(Cmd) < 1 || cmdp == 'h' || cmdp == 'H') {
-               PrintAndLog("Usage:  hf mfu crdbl  <block number> <key>");
-               PrintAndLog("");
-               PrintAndLog("sample: hf mfu crdbl 0");
-               PrintAndLog("        hf mfu crdbl 0 00112233445566778899AABBCCDDEEFF");
-               return 0;
-       }
-
-       blockNo = param_get8(Cmd, 0);
-       if (blockNo < 0) {
-               PrintAndLog("Wrong block number");
-               return 1;
-       }
-
-       if (blockNo > MAX_ULC_BLOCKS ){
-               PrintAndLog("Error: Maximum number of blocks is 47 for Ultralight-C");
-               return 1;
-       } 
-       
-       // key
-       if ( strlen(Cmd) > 3){
-               if (param_gethex(Cmd, 1, key, 32)) {
-                       PrintAndLog("Key must include %d HEX symbols", 32);
-                       return 1;
-               } else {
-                       hasPwd = TRUE;
-               }       
-       }       
-
-       //Read Block
-       UsbCommand c = {CMD_MIFAREU_READBL, {blockNo}};
-       if ( hasPwd ) {
-               c.arg[1] = 1;
-               memcpy(c.d.asBytes,key,16);
-       }
-       SendCommand(&c);
-
-       if (WaitForResponseTimeout(CMD_ACK,&resp,1500)) {
-               uint8_t isOK = resp.arg[0] & 0xff;
-               if (isOK) {
-                       uint8_t *data = resp.d.asBytes;
-                       PrintAndLog("Block: %0d (0x%02X) [ %s]", (int)blockNo, blockNo, sprint_hex(data, 4));
-               }
-               else {
-                       PrintAndLog("Failed reading block: (%02x)", isOK);
-               }
-       } else {
-               PrintAndLog("Command execute time-out");
-       }
-       return 0;
-}
-
-//
-//  Mifare Ultralight C Write Single Block
-//
-int CmdHF14AMfUCWrBl(const char *Cmd){
-       
-       uint8_t blockNo = -1;
-       bool chinese_card = FALSE;
-       uint8_t bldata[16] = {0x00};
-       UsbCommand resp;
-
-       char cmdp = param_getchar(Cmd, 0);
-       
-       if (strlen(Cmd) < 3 || cmdp == 'h' || cmdp == 'H') {    
-               PrintAndLog("Usage:  hf mfu cwrbl <block number> <block data (8 hex symbols)> [w]");
-               PrintAndLog("       [block number]");
-               PrintAndLog("       [block data] - (8 hex symbols)");
-               PrintAndLog("       [w] - Chinese magic ultralight tag");
-               PrintAndLog("");
-               PrintAndLog("        sample: hf mfu cwrbl 0 01020304");
-               PrintAndLog("");
-               return 0;
-       }
-       
-       blockNo = param_get8(Cmd, 0);
-       if (blockNo > MAX_ULC_BLOCKS ){
-               PrintAndLog("Error: Maximum number of blocks is 47 for Ultralight-C Cards!");
-               return 1;
-       }
-       
-       if (param_gethex(Cmd, 1, bldata, 8)) {
-               PrintAndLog("Block data must include 8 HEX symbols");
-               return 1;
-       }
-
-       if (strchr(Cmd,'w') != 0  || strchr(Cmd,'W') != 0 ) {
-               chinese_card = TRUE; 
-       }
-
-       if ( blockNo <= 3 ) {
-               if (!chinese_card){
-                       PrintAndLog("Access Denied");  
-                       return 1;
-               } else {
-                       PrintAndLog("--Special block no: 0x%02x", blockNo);
-                       PrintAndLog("--Data: %s", sprint_hex(bldata, 4));
-                       UsbCommand d = {CMD_MIFAREU_WRITEBL, {blockNo}};
-                       memcpy(d.d.asBytes,bldata, 4);
-                       SendCommand(&d);
-                       if (WaitForResponseTimeout(CMD_ACK,&resp,1500)) {
-                               uint8_t isOK  = resp.arg[0] & 0xff;
-                               PrintAndLog("isOk:%02x", isOK);
-                       } else {
-                               PrintAndLog("Command execute timeout");
-                               return 1;
-                       }
-               }
-       } else {
-                       PrintAndLog("--Block no : 0x%02x", blockNo);
-                       PrintAndLog("--Data: %s", sprint_hex(bldata, 4));               
-                       UsbCommand e = {CMD_MIFAREU_WRITEBL, {blockNo}};
-                       memcpy(e.d.asBytes,bldata, 4);
-                       SendCommand(&e);
-                       if (WaitForResponseTimeout(CMD_ACK,&resp,1500)) {
-                               uint8_t isOK  = resp.arg[0] & 0xff;
-                               PrintAndLog("isOk : %02x", isOK);
-                       } else {
-                               PrintAndLog("Command execute timeout");
-                               return 1;
-                       }
-       }
-       return 0;
-}
-
 // 
 // Mifare Ultralight C - Set password
 //
@@ -1518,6 +1612,7 @@ int CmdHF14AMfucSetPwd(const char *Cmd){
        
        UsbCommand c = {CMD_MIFAREUC_SETPWD};   
        memcpy( c.d.asBytes, pwd, 16);
+       clearCommandBuffer();
        SendCommand(&c);
 
        UsbCommand resp;
@@ -1566,6 +1661,7 @@ int CmdHF14AMfucSetUid(const char *Cmd){
        // read block2. 
        c.cmd = CMD_MIFAREU_READBL;
        c.arg[0] = 2;
+       clearCommandBuffer();
        SendCommand(&c);
        if (!WaitForResponseTimeout(CMD_ACK,&resp,1500)) {
                PrintAndLog("Command execute timeout");
@@ -1583,6 +1679,7 @@ int CmdHF14AMfucSetUid(const char *Cmd){
        c.d.asBytes[1] = uid[1];
        c.d.asBytes[2] = uid[2];
        c.d.asBytes[3] =  0x88 ^ uid[0] ^ uid[1] ^ uid[2];
+       clearCommandBuffer();
        SendCommand(&c);
        if (!WaitForResponseTimeout(CMD_ACK,&resp,1500)) {
                PrintAndLog("Command execute timeout");
@@ -1595,6 +1692,7 @@ int CmdHF14AMfucSetUid(const char *Cmd){
        c.d.asBytes[1] = uid[4];
        c.d.asBytes[2] = uid[5];
        c.d.asBytes[3] = uid[6];
+       clearCommandBuffer();
        SendCommand(&c);
        if (!WaitForResponseTimeout(CMD_ACK,&resp,1500) ) {
                PrintAndLog("Command execute timeout");
@@ -1607,6 +1705,7 @@ int CmdHF14AMfucSetUid(const char *Cmd){
        c.d.asBytes[1] = oldblock2[1];
        c.d.asBytes[2] = oldblock2[2];
        c.d.asBytes[3] = oldblock2[3];
+       clearCommandBuffer();
        SendCommand(&c);
        if (!WaitForResponseTimeout(CMD_ACK,&resp,1500) ) {
                PrintAndLog("Command execute timeout");
@@ -1617,10 +1716,10 @@ int CmdHF14AMfucSetUid(const char *Cmd){
 }
 
 int CmdHF14AMfuGenDiverseKeys(const char *Cmd){
-       
+
        uint8_t iv[8] = { 0x00 };
        uint8_t block = 0x07;
-       
+
        // UL-EV1
        //04 57 b6 e2 05 3f 80 UID
        //4a f8 4b 19   PWD
@@ -1634,14 +1733,14 @@ int CmdHF14AMfuGenDiverseKeys(const char *Cmd){
        
        uint8_t mix[8] = { 0x00 };
        uint8_t divkey[8] = { 0x00 };
-       
+
        memcpy(mix, mifarekeyA, 4);
-       
+
        mix[4] = mifarekeyA[4] ^ uid[0];
        mix[5] = mifarekeyA[5] ^ uid[1];
        mix[6] = block ^ uid[2];
        mix[7] = uid[3];
-       
+
        des3_context ctx = { 0x00 };
        des3_set2key_enc(&ctx, masterkey);
 
@@ -1660,9 +1759,9 @@ int CmdHF14AMfuGenDiverseKeys(const char *Cmd){
        PrintAndLog("Mifare key   :\t %s", sprint_hex(mifarekeyA, sizeof(mifarekeyA)));
        PrintAndLog("Message      :\t %s", sprint_hex(mix, sizeof(mix)));
        PrintAndLog("Diversified key: %s", sprint_hex(divkey+1, 6));
-               
+
        PrintAndLog("\n DES version");
-       
+
        for (int i=0; i < sizeof(mifarekeyA); ++i){
                dkeyA[i] = (mifarekeyA[i] << 1) & 0xff;
                dkeyA[6] |=  ((mifarekeyA[i] >> 7) & 1) << (i+1);
@@ -1680,7 +1779,7 @@ int CmdHF14AMfuGenDiverseKeys(const char *Cmd){
        memcpy(dmkey+8, dkeyB, 8);
        memcpy(dmkey+16, dkeyA, 8);
        memset(iv, 0x00, 8);
-       
+
        des3_set3key_enc(&ctx, dmkey);
 
        des3_crypt_cbc(&ctx  // des3_context
@@ -1723,11 +1822,9 @@ static command_t CommandTable[] =
        {"help",        CmdHelp,                        1, "This help"},
        {"dbg",         CmdHF14AMfDbg,          0, "Set default debug mode"},
        {"info",        CmdHF14AMfUInfo,        0, "Tag information"},
-       {"dump",        CmdHF14AMfUDump,        0, "Dump Ultralight / Ultralight-C tag to binary file"},
-       {"rdbl",        CmdHF14AMfURdBl,        0, "Read block  - Ultralight"},
-       {"wrbl",        CmdHF14AMfUWrBl,        0, "Write block - Ultralight"},    
-       {"crdbl",       CmdHF14AMfUCRdBl,       0, "Read block        - Ultralight C"},
-       {"cwrbl",       CmdHF14AMfUCWrBl,       0, "Write block       - Ultralight C"},
+       {"dump",        CmdHF14AMfUDump,        0, "Dump Ultralight / Ultralight-C / NTAG tag to binary file"},
+       {"rdbl",        CmdHF14AMfURdBl,        0, "Read block"},
+       {"wrbl",        CmdHF14AMfUWrBl,        0, "Write block"},
        {"cauth",       CmdHF14AMfucAuth,       0, "Authentication    - Ultralight C"},
        {"setpwd",      CmdHF14AMfucSetPwd, 1, "Set 3des password - Ultralight-C"},
        {"setuid",      CmdHF14AMfucSetUid, 1, "Set UID - MAGIC tags only"},
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