]> git.zerfleddert.de Git - proxmark3-svn/blobdiff - client/cmdhfmfu.c
ADD: @pwpiwi 's fixes for 14b. Including a rename from iso14443.c -> iso14443b.c
[proxmark3-svn] / client / cmdhfmfu.c
index b3304f1632a72eb631d6abe87b60799dca6b9c58..027214ab00b061a5e9800a6b04d66b887d107b8f 100644 (file)
@@ -94,25 +94,28 @@ 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 +132,7 @@ 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 +197,7 @@ 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;
@@ -279,7 +284,7 @@ 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]) );
+       PrintAndLog("    UID[0] : %02X, %s",  uid[0], getTagInfo(uid[0]) );
        if ( uid[0] == 0x05 ) {
                uint8_t chip = (data[8] & 0xC7); // 11000111  mask, bit 3,4,5 RFU
                switch (chip){
@@ -415,7 +420,7 @@ 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 +430,13 @@ 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 +444,9 @@ 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 +468,7 @@ 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));
@@ -516,6 +522,7 @@ static int ul_magic_test(){
        // Magic Ultralight tests
        // 1) take present UID, and try to write it back. OBSOLETE 
        // 2) make a wrong length write to page0, and see if tag answers with ACK/NACK:
+       ul_switch_off_field();
        iso14a_card_select_t card;
        if ( !ul_select(&card) ) 
                return UL_ERROR;
@@ -620,7 +627,6 @@ uint32_t GetHF14AMfU_Type(void){
                }
        }
 
-
        tagtype |= ul_magic_test();
        if (tagtype == (UNKNOWN | MAGIC)) tagtype = (UL_MAGIC);
        return tagtype;
@@ -631,16 +637,19 @@ 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 +660,21 @@ 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));
@@ -687,7 +694,10 @@ 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));
@@ -732,6 +742,7 @@ 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];
@@ -753,7 +764,7 @@ 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;
                }
        }
 
@@ -768,7 +779,7 @@ 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;
                }
        }
 
@@ -783,7 +794,7 @@ 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;
@@ -802,7 +813,7 @@ 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);
                        }
                }
 
@@ -820,7 +831,7 @@ 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");
@@ -834,105 +845,243 @@ 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;
        
-       if (param_gethex(Cmd, 1, bldata, 8)) {
-               PrintAndLog("Block data must include 8 HEX symbols");
-               return 1;
+       // starting with getting tagtype
+       TagTypeUL_t tagtype = GetHF14AMfU_Type();
+       if (tagtype == UL_ERROR) return -1;
+       
+       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);
+                               
+                               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 < 0) {
+                                       PrintAndLog("Wrong block number");
+                                       errors = true;                                  
+                               }
+                               if (blockNo > maxblockno){
+                                       PrintAndLog("block number too large. Max block is %u/0x%02X \n", maxblockno,maxblockno);
+                                       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 ( blockNo == -1 ) return usage_hf_mfu_wrbl();
        
-       if (strchr(Cmd,'w') != 0  || strchr(Cmd,'W') != 0 ) {
-               chinese_card = TRUE; 
+       // 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);
        }
        
-       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");
-                       }  
-               }
+       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;
-       }
-
-       blockNo = param_get8(Cmd, 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;
 
-       if (blockNo > MAX_UL_BLOCKS){
-               PrintAndLog("Error: Maximum number of blocks is 15 for Ultralight");
-               return 1;
+       // starting with getting tagtype
+       TagTypeUL_t tagtype = GetHF14AMfU_Type();
+       if (tagtype == UL_ERROR) return -1;
+       
+       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);
+                               
+                               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 < 0) {
+                                       PrintAndLog("Wrong block number");
+                                       errors = true;                                  
+                               }
+                               if (blockNo > maxblockno){
+                                       PrintAndLog("block number to large. Max block is %u/0x%02X \n", maxblockno,maxblockno);
+                                       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();
        }
 
+       if ( blockNo == -1 ) return usage_hf_mfu_rdbl();
+       
+       // 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);
@@ -940,37 +1089,36 @@ 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, 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 +1127,35 @@ 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 +1174,14 @@ 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 +1199,15 @@ 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 +1244,30 @@ 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 +1279,13 @@ 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;
@@ -1133,17 +1311,26 @@ 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){
@@ -1171,7 +1358,7 @@ 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 +1377,9 @@ 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 +1392,7 @@ 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);
@@ -1357,151 +1545,15 @@ 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
 //
 int CmdHF14AMfucSetPwd(const char *Cmd){
 
-       uint8_t pwd[16] = {0x00};
+       uint8_t pwd[16] = {0x00};       
        
        char cmdp = param_getchar(Cmd, 0);
-       
+
        if (strlen(Cmd) == 0  || cmdp == 'h' || cmdp == 'H') {  
                PrintAndLog("Usage:  hf mfu setpwd <password (32 hex symbols)>");
                PrintAndLog("       [password] - (32 hex symbols)");
@@ -1518,6 +1570,7 @@ int CmdHF14AMfucSetPwd(const char *Cmd){
        
        UsbCommand c = {CMD_MIFAREUC_SETPWD};   
        memcpy( c.d.asBytes, pwd, 16);
+       clearCommandBuffer();
        SendCommand(&c);
 
        UsbCommand resp;
@@ -1566,12 +1619,13 @@ 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");
                return 2;
        }
-       
+
        // save old block2.
        uint8_t oldblock2[4] = {0x00};
        memcpy(resp.d.asBytes, oldblock2, 4);
@@ -1583,18 +1637,20 @@ 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");
                return 3;
        }
-       
+
        // block 1.
        c.arg[0] = 1;
        c.d.asBytes[0] = uid[3];
        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 +1663,7 @@ 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");
@@ -1723,11 +1780,9 @@ 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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