]> cvs.zerfleddert.de Git - proxmark3-svn/blobdiff - client/cmdhficlass.c
added magic cards
[proxmark3-svn] / client / cmdhficlass.c
index 55dd555ad56013ca92bf7f98963515e5c558ecac..d42f7eef6badf6d3d53dd21de7d81ec1f50e2e3b 100644 (file)
@@ -14,6 +14,7 @@
 #include <stdlib.h>
 #include <string.h>
 #include <sys/stat.h>
+#include <ctype.h>
 #include "iso14443crc.h" // Can also be used for iClass, using 0xE012 as CRC-type
 #include "data.h"
 #include "proxmark3.h"
@@ -23,7 +24,7 @@
 #include "common.h"
 #include "util.h"
 #include "cmdmain.h"
-#include "loclass/des.h"
+#include "polarssl/des.h"
 #include "loclass/cipherutils.h"
 #include "loclass/cipher.h"
 #include "loclass/ikeys.h"
@@ -32,6 +33,7 @@
 #include "protocols.h"
 #include "usb_cmd.h"
 #include "cmdhfmfu.h"
+#include "util_posix.h"
 
 static int CmdHelp(const char *Cmd);
 
@@ -51,6 +53,20 @@ typedef struct iclass_block {
     uint8_t d[8];
 } iclass_block_t;
 
+int usage_hf_iclass_chk(void) {
+       PrintAndLog("Checkkeys loads a dictionary text file with 8byte hex keys to test authenticating against a iClass tag");  
+       PrintAndLog("Usage: hf iclass chk [h|e|r] <f  (*.dic)>");
+       PrintAndLog("Options:");
+       PrintAndLog("h             Show this help");
+       PrintAndLog("f <filename>  Dictionary file with default iclass keys");
+       PrintAndLog("      e             target Elite / High security key scheme");
+       PrintAndLog("      r             interpret dictionary file as raw (diversified keys)");
+       PrintAndLog("Samples:");
+       PrintAndLog("            hf iclass chk f default_iclass_keys.dic");     
+       PrintAndLog("            hf iclass chk f default_iclass_keys.dic e");   
+       return 0;
+}
+
 int xorbits_8(uint8_t val) {
        uint8_t res = val ^ (val >> 1); //1st pass
        res = res ^ (res >> 1);                 // 2nd pass
@@ -180,10 +196,10 @@ int CmdHFiClassSim(const char *Cmd) {
 
 int HFiClassReader(const char *Cmd, bool loop, bool verbose) {
        bool tagFound = false;
-       UsbCommand c = {CMD_READER_ICLASS, {FLAG_ICLASS_READER_CSN|
-                                       FLAG_ICLASS_READER_CONF|FLAG_ICLASS_READER_AA}};
+       UsbCommand c = {CMD_READER_ICLASS, {FLAG_ICLASS_READER_CSN |
+                   FLAG_ICLASS_READER_CC | FLAG_ICLASS_READER_CONF | FLAG_ICLASS_READER_AA |
+                   FLAG_ICLASS_READER_ONLY_ONCE | FLAG_ICLASS_READER_ONE_TRY } };
        // loop in client not device - else on windows have a communication error
-       c.arg[0] |= FLAG_ICLASS_READER_ONLY_ONCE | FLAG_ICLASS_READER_ONE_TRY;
        UsbCommand resp;
        while(!ukbhit()){
                SendCommand(&c);
@@ -191,27 +207,28 @@ int HFiClassReader(const char *Cmd, bool loop, bool verbose) {
                        uint8_t readStatus = resp.arg[0] & 0xff;
                        uint8_t *data = resp.d.asBytes;
 
-                       if (verbose)
-                               PrintAndLog("Readstatus:%02x", readStatus);
-                       if( readStatus == 0){
-                               //Aborted
+                       // no tag found or button pressed
+                       if( (readStatus == 0 && !loop) || readStatus == 0xFF) {
+                               // abort
                                if (verbose) PrintAndLog("Quitting...");
                                return 0;
                        }
-                       if( readStatus & FLAG_ICLASS_READER_CSN){
+
+                       if( readStatus & FLAG_ICLASS_READER_CSN) {
                                PrintAndLog("   CSN: %s",sprint_hex(data,8));
                                tagFound = true;
                        }
-                       if( readStatus & FLAG_ICLASS_READER_CC)  PrintAndLog("    CC: %s",sprint_hex(data+16,8));
-                       if( readStatus & FLAG_ICLASS_READER_CONF){
+                       if( readStatus & FLAG_ICLASS_READER_CC) { 
+                               PrintAndLog("    CC: %s",sprint_hex(data+16,8));
+                       }
+                       if( readStatus & FLAG_ICLASS_READER_CONF) {
                                printIclassDumpInfo(data);
                        }
-                       //TODO add iclass read block 05 and test iclass type..
                        if (readStatus & FLAG_ICLASS_READER_AA) {
                                bool legacy = true;
-                               PrintAndLog(" AppIA: %s",sprint_hex(data+8*4,8));
+                               PrintAndLog(" AppIA: %s",sprint_hex(data+8*5,8));
                                for (int i = 0; i<8; i++) {
-                                       if (data[8*4+i] != 0xFF) {
+                                       if (data[8*5+i] != 0xFF) {
                                                legacy = false;
                                        } 
                                }
@@ -277,7 +294,7 @@ int CmdHFiClassELoad(const char *Cmd) {
        //File handling and reading
        FILE *f;
        char filename[FILE_PATH_SIZE];
-       if(opt == 'f' && param_getstr(Cmd, 1, filename) > 0)
+       if(opt == 'f' && param_getstr(Cmd, 1, filename, sizeof(filename)) > 0)
        {
                f = fopen(filename, "rb");
        }else{
@@ -383,7 +400,7 @@ int CmdHFiClassDecrypt(const char *Cmd) {
        //Open the tagdump-file
        FILE *f;
        char filename[FILE_PATH_SIZE];
-       if(opt == 'f' && param_getstr(Cmd, 1, filename) > 0) {
+       if(opt == 'f' && param_getstr(Cmd, 1, filename, sizeof(filename)) > 0) {
                f = fopen(filename, "rb");
                if ( f == NULL ) {
                        PrintAndLog("Could not find file %s", filename);
@@ -530,7 +547,7 @@ static bool select_and_auth(uint8_t *KEY, uint8_t *MAC, uint8_t *div_key, bool u
                memcpy(div_key, KEY, 8);
        else
                HFiClassCalcDivKey(CSN, KEY, div_key, elite);
-       PrintAndLog("Authing with %s: %02x%02x%02x%02x%02x%02x%02x%02x", rawkey ? "raw key" : "diversified key", div_key[0],div_key[1],div_key[2],div_key[3],div_key[4],div_key[5],div_key[6],div_key[7]);
+        if (verbose) PrintAndLog("Authing with %s: %02x%02x%02x%02x%02x%02x%02x%02x", rawkey ? "raw key" : "diversified key", div_key[0],div_key[1],div_key[2],div_key[3],div_key[4],div_key[5],div_key[6],div_key[7]);
 
        doMAC(CCNR, div_key, MAC);
        UsbCommand resp;
@@ -540,12 +557,12 @@ static bool select_and_auth(uint8_t *KEY, uint8_t *MAC, uint8_t *div_key, bool u
        SendCommand(&d);
        if (!WaitForResponseTimeout(CMD_ACK,&resp,4500))
        {
-               PrintAndLog("Auth Command execute timeout");
+               if (verbose) PrintAndLog("Auth Command execute timeout");
                return false;
        }
        uint8_t isOK = resp.arg[0] & 0xff;
        if (!isOK) {
-               PrintAndLog("Authentication error");
+               if (verbose) PrintAndLog("Authentication error");
                return false;
        }
        return true;
@@ -604,7 +621,7 @@ int CmdHFiClassReader_Dump(const char *Cmd) {
                case 'c':
                case 'C':
                        have_credit_key = true;
-                       dataLen = param_getstr(Cmd, cmdp+1, tempStr);
+                       dataLen = param_getstr(Cmd, cmdp+1, tempStr, sizeof(tempStr));
                        if (dataLen == 16) {
                                errors = param_gethex(tempStr, 0, CreditKEY, dataLen);
                        } else if (dataLen == 1) {
@@ -628,7 +645,7 @@ int CmdHFiClassReader_Dump(const char *Cmd) {
                        break;
                case 'f':
                case 'F':
-                       fileNameLen = param_getstr(Cmd, cmdp+1, filename); 
+                       fileNameLen = param_getstr(Cmd, cmdp+1, filename, sizeof(filename)); 
                        if (fileNameLen < 1) {
                                PrintAndLog("No filename found after f");
                                errors = true;
@@ -638,7 +655,7 @@ int CmdHFiClassReader_Dump(const char *Cmd) {
                case 'k':
                case 'K':
                        have_debit_key = true;
-                       dataLen = param_getstr(Cmd, cmdp+1, tempStr);
+                       dataLen = param_getstr(Cmd, cmdp+1, tempStr, sizeof(tempStr));
                        if (dataLen == 16) { 
                                errors = param_gethex(tempStr, 0, KEY, dataLen);
                        } else if (dataLen == 1) {
@@ -682,7 +699,7 @@ int CmdHFiClassReader_Dump(const char *Cmd) {
        SendCommand(&c);
        if (!WaitForResponseTimeout(CMD_ACK, &resp, 4500)) {
                PrintAndLog("Command execute timeout");
-               ul_switch_off_field();
+               DropField();
                return 0;
        }
        uint8_t readStatus = resp.arg[0] & 0xff;
@@ -690,7 +707,7 @@ int CmdHFiClassReader_Dump(const char *Cmd) {
 
        if(readStatus == 0){
                PrintAndLog("No tag found...");
-               ul_switch_off_field();
+               DropField();
                return 0;
        }
        if( readStatus & (FLAG_ICLASS_READER_CSN|FLAG_ICLASS_READER_CONF|FLAG_ICLASS_READER_CC)){
@@ -701,12 +718,12 @@ int CmdHFiClassReader_Dump(const char *Cmd) {
                // large memory - not able to dump pages currently
                if (numblks > maxBlk) numblks = maxBlk;
        }
-       ul_switch_off_field();
+       DropField();
        // authenticate debit key and get div_key - later store in dump block 3
        if (!select_and_auth(KEY, MAC, div_key, use_credit_key, elite, rawkey, false)){
                //try twice - for some reason it sometimes fails the first time...
                if (!select_and_auth(KEY, MAC, div_key, use_credit_key, elite, rawkey, false)){
-                       ul_switch_off_field();
+                       DropField();
                        return 0;
                }
        }
@@ -717,14 +734,14 @@ int CmdHFiClassReader_Dump(const char *Cmd) {
        SendCommand(&w);
        if (!WaitForResponseTimeout(CMD_ACK, &resp, 4500)) {
                PrintAndLog("Command execute time-out 1");
-               ul_switch_off_field();
+               DropField();
                return 1;
        }
        uint32_t blocksRead = resp.arg[1];
        uint8_t isOK = resp.arg[0] & 0xff;
        if (!isOK && !blocksRead) {
                PrintAndLog("Read Block Failed");
-               ul_switch_off_field();
+               DropField();
                return 0;
        }
        uint32_t startindex = resp.arg[2];
@@ -740,13 +757,13 @@ int CmdHFiClassReader_Dump(const char *Cmd) {
        // try AA2
        if (have_credit_key) {
                //turn off hf field before authenticating with different key
-               ul_switch_off_field();
+               DropField();
                memset(MAC,0,4);
                // AA2 authenticate credit key and git c_div_key - later store in dump block 4
                if (!select_and_auth(CreditKEY, MAC, c_div_key, true, false, false, false)){
                        //try twice - for some reason it sometimes fails the first time...
                        if (!select_and_auth(CreditKEY, MAC, c_div_key, true, false, false, false)){
-                               ul_switch_off_field();
+                               DropField();
                                return 0;
                        }
                }
@@ -759,14 +776,14 @@ int CmdHFiClassReader_Dump(const char *Cmd) {
                        SendCommand(&w);
                        if (!WaitForResponseTimeout(CMD_ACK, &resp, 4500)) {
                                PrintAndLog("Command execute timeout 2");
-                               ul_switch_off_field();
+                               DropField();
                                return 0;
                        }
                        uint8_t isOK = resp.arg[0] & 0xff;
                        blocksRead = resp.arg[1];
                        if (!isOK && !blocksRead) {
                                PrintAndLog("Read Block Failed 2");
-                               ul_switch_off_field();
+                               DropField();
                                return 0;
                        }               
 
@@ -781,7 +798,7 @@ int CmdHFiClassReader_Dump(const char *Cmd) {
 
                        gotBytes += blocksRead*8;                       
                } else { //field is still on - turn it off...
-                       ul_switch_off_field();
+                       DropField();
                }
        }
 
@@ -897,7 +914,7 @@ int CmdHFiClass_WriteBlock(const char *Cmd) {
                        break;
                case 'k':
                case 'K':
-                       dataLen = param_getstr(Cmd, cmdp+1, tempStr);
+                       dataLen = param_getstr(Cmd, cmdp+1, tempStr, sizeof(tempStr));
                        if (dataLen == 16) { 
                                errors = param_gethex(tempStr, 0, KEY, dataLen);
                        } else if (dataLen == 1) {
@@ -929,7 +946,7 @@ int CmdHFiClass_WriteBlock(const char *Cmd) {
 
        if (cmdp < 6) return usage_hf_iclass_writeblock();
        int ans = WriteBlock(blockno, bldata, KEY, use_credit_key, elite, rawkey, true);
-       ul_switch_off_field();
+       DropField();
        return ans;
 }
 
@@ -991,7 +1008,7 @@ int CmdHFiClassCloneTag(const char *Cmd) {
                        break;
                case 'f':
                case 'F':
-                       fileNameLen = param_getstr(Cmd, cmdp+1, filename); 
+                       fileNameLen = param_getstr(Cmd, cmdp+1, filename, sizeof(filename)); 
                        if (fileNameLen < 1) {
                                PrintAndLog("No filename found after f");
                                errors = true;
@@ -1000,7 +1017,7 @@ int CmdHFiClassCloneTag(const char *Cmd) {
                        break;
                case 'k':
                case 'K':
-                       dataLen = param_getstr(Cmd, cmdp+1, tempStr);
+                       dataLen = param_getstr(Cmd, cmdp+1, tempStr, sizeof(tempStr));
                        if (dataLen == 16) { 
                                errors = param_gethex(tempStr, 0, KEY, dataLen);
                        } else if (dataLen == 1) {
@@ -1195,7 +1212,7 @@ int CmdHFiClass_ReadBlock(const char *Cmd) {
                case 'k':
                case 'K':
                        auth = true;
-                       dataLen = param_getstr(Cmd, cmdp+1, tempStr);
+                       dataLen = param_getstr(Cmd, cmdp+1, tempStr, sizeof(tempStr));
                        if (dataLen == 16) { 
                                errors = param_gethex(tempStr, 0, KEY, dataLen);
                        } else if (dataLen == 1) {
@@ -1252,7 +1269,7 @@ int CmdHFiClass_loclass(const char *Cmd) {
        char fileName[255] = {0};
        if(opt == 'f')
        {
-               if(param_getstr(Cmd, 1, fileName) > 0)
+               if(param_getstr(Cmd, 1, fileName, sizeof(fileName)) > 0)
                {
                        return bruteforceFileNoKeys(fileName);
                }else
@@ -1317,14 +1334,14 @@ int CmdHFiClassReadTagFile(const char *Cmd) {
        char tempnum[5];
        FILE *f;
        char filename[FILE_PATH_SIZE];
-       if (param_getstr(Cmd, 0, filename) < 1)
+       if (param_getstr(Cmd, 0, filename, sizeof(filename)) < 1)
                return usage_hf_iclass_readtagfile();
-       if (param_getstr(Cmd,1,(char *)&tempnum) < 1)
+       if (param_getstr(Cmd, 1, tempnum, sizeof(tempnum)) < 1)
                startblock = 0;
        else
                sscanf(tempnum,"%d",&startblock);
 
-       if (param_getstr(Cmd,2,(char *)&tempnum) < 1)
+       if (param_getstr(Cmd,2, tempnum, sizeof(tempnum)) < 1)
                endblock = 0;
        else
                sscanf(tempnum,"%d",&endblock);
@@ -1457,7 +1474,7 @@ int CmdHFiClassCalcNewKey(const char *Cmd) {
                        return usage_hf_iclass_calc_newkey();
                case 'e':
                case 'E':
-                       dataLen = param_getstr(Cmd, cmdp, tempStr);
+                       dataLen = param_getstr(Cmd, cmdp, tempStr, sizeof(tempStr));
                        if (dataLen==2)
                                oldElite = true;
                        elite = true;
@@ -1465,7 +1482,7 @@ int CmdHFiClassCalcNewKey(const char *Cmd) {
                        break;
                case 'n':
                case 'N':
-                       dataLen = param_getstr(Cmd, cmdp+1, tempStr);
+                       dataLen = param_getstr(Cmd, cmdp+1, tempStr, sizeof(tempStr));
                        if (dataLen == 16) { 
                                errors = param_gethex(tempStr, 0, NEWKEY, dataLen);
                        } else if (dataLen == 1) {
@@ -1484,7 +1501,7 @@ int CmdHFiClassCalcNewKey(const char *Cmd) {
                        break;
                case 'o':
                case 'O':
-                       dataLen = param_getstr(Cmd, cmdp+1, tempStr);
+                       dataLen = param_getstr(Cmd, cmdp+1, tempStr, sizeof(tempStr));
                        if (dataLen == 16) { 
                                errors = param_gethex(tempStr, 0, OLDKEY, dataLen);
                        } else if (dataLen == 1) {
@@ -1625,7 +1642,7 @@ int CmdHFiClassManageKeys(const char *Cmd) {
                        return usage_hf_iclass_managekeys();
                case 'f':
                case 'F':
-                       fileNameLen = param_getstr(Cmd, cmdp+1, filename); 
+                       fileNameLen = param_getstr(Cmd, cmdp+1, filename, sizeof(filename)); 
                        if (fileNameLen < 1) {
                                PrintAndLog("No filename found after f");
                                errors = true;
@@ -1644,7 +1661,7 @@ int CmdHFiClassManageKeys(const char *Cmd) {
                case 'k':
                case 'K':
                        operation += 3; //set key 
-                       dataLen = param_getstr(Cmd, cmdp+1, tempStr);
+                       dataLen = param_getstr(Cmd, cmdp+1, tempStr, sizeof(tempStr));
                        if (dataLen == 16) { //ul-c or ev1/ntag key length
                                errors = param_gethex(tempStr, 0, KEY, dataLen);
                        } else {
@@ -1698,10 +1715,152 @@ int CmdHFiClassManageKeys(const char *Cmd) {
        return 0;
 }
 
+int CmdHFiClassCheckKeys(const char *Cmd) {
+
+       uint8_t mac[4] = {0x00,0x00,0x00,0x00};
+       uint8_t key[8] = {0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00};
+       uint8_t div_key[8] = {0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00};
+
+       // elite key,  raw key, standard key
+       bool use_elite = false;
+       bool use_raw = false;   
+       bool found_debit = false;
+       bool found_credit = false;      
+       bool errors = false;
+       uint8_t cmdp = 0x00;
+       FILE * f;
+       char filename[FILE_PATH_SIZE] = {0};
+       uint8_t fileNameLen = 0;
+       char buf[17];
+       uint8_t *keyBlock = NULL, *p;
+       int keyitems = 0, keycnt = 0;
+
+       while (param_getchar(Cmd, cmdp) != 0x00 && !errors) {
+               switch (param_getchar(Cmd, cmdp)) {
+               case 'h':
+               case 'H':
+                       return usage_hf_iclass_chk();
+               case 'f':
+               case 'F':
+                       fileNameLen = param_getstr(Cmd, cmdp+1, filename, sizeof(filename)); 
+                       if (fileNameLen < 1) {
+                               PrintAndLog("No filename found after f");
+                               errors = true;
+                       }
+                       cmdp += 2;
+                       break;
+               case 'e':
+               case 'E':
+                       use_elite = true;
+                       cmdp++;
+                       break;
+               case 'r':
+               case 'R':
+                       use_raw = true;
+                       cmdp++;
+                       break;
+               default:
+                       PrintAndLog("Unknown parameter '%c'\n", param_getchar(Cmd, cmdp));
+                       errors = true;
+                       break;
+               }
+       }
+       if (errors) return usage_hf_iclass_chk();       
+                       
+       if ( !(f = fopen( filename , "r")) ) {
+               PrintAndLog("File: %s: not found or locked.", filename);
+               return 1;
+       }
+
+       while( fgets(buf, sizeof(buf), f) ){
+               if (strlen(buf) < 16 || buf[15] == '\n')
+                       continue;
+       
+               while (fgetc(f) != '\n' && !feof(f)) ;  //goto next line
+               
+               if( buf[0]=='#' ) continue;     //The line start with # is comment, skip
+
+               if (!isxdigit(buf[0])){
+                       PrintAndLog("File content error. '%s' must include 16 HEX symbols",buf);
+                       continue;
+               }
+               
+               buf[16] = 0;
+
+               p = realloc(keyBlock, 8 * (keyitems += 64));
+               if (!p) {
+                       PrintAndLog("Cannot allocate memory for default keys");
+                       free(keyBlock);
+                       fclose(f);
+                       return 2;
+               }
+               keyBlock = p;
+
+               memset(keyBlock + 8 * keycnt, 0, 8);
+               num_to_bytes(strtoull(buf, NULL, 16), 8, keyBlock + 8 * keycnt);
+
+               //PrintAndLog("check key[%2d] %016" PRIx64, keycnt, bytes_to_num(keyBlock + 8*keycnt, 8));
+               keycnt++;
+               memset(buf, 0, sizeof(buf));
+       }
+       fclose(f);
+       PrintAndLog("Loaded %2d keys from %s", keycnt, filename);
+       
+       // time
+       uint64_t t1 = msclock();
+                               
+       for (uint32_t c = 0; c < keycnt; c += 1) {
+                       printf("."); fflush(stdout);                    
+                       if (ukbhit()) {
+                               int gc = getchar(); (void)gc;
+                               printf("\naborted via keyboard!\n");
+                               break;
+                       }
+                       
+                       memcpy(key, keyBlock + 8 * c , 8); 
+
+                       // debit key. try twice
+                       for (int foo = 0; foo < 2 && !found_debit; foo++) {
+                               if (!select_and_auth(key, mac, div_key, false, use_elite, use_raw, false))
+                                       continue;
+
+                               // key found.
+                               PrintAndLog("\n--------------------------------------------------------");
+                       PrintAndLog("   Found AA1 debit key\t\t[%s]", sprint_hex(key, 8));
+                               found_debit = true;
+                       }
+                       
+                       // credit key. try twice
+                       for (int foo = 0; foo < 2 && !found_credit; foo++) {
+                               if (!select_and_auth(key, mac, div_key, true, use_elite, use_raw, false))
+                                       continue;
+                               
+                               // key found
+                               PrintAndLog("\n--------------------------------------------------------");
+                               PrintAndLog("   Found AA2 credit key\t\t[%s]", sprint_hex(key, 8));
+                               found_credit = true;
+                       }
+                       
+                       // both keys found.
+                       if ( found_debit && found_credit )
+                               break;
+       }
+
+       t1 = msclock() - t1;
+
+       PrintAndLog("\nTime in iclass checkkeys: %.0f seconds\n", (float)t1/1000.0);
+       
+       DropField();
+       free(keyBlock);
+       PrintAndLog("");
+       return 0;
+}
+
 static command_t CommandTable[] = 
 {
        {"help",        CmdHelp,                        1,      "This help"},
        {"calcnewkey",  CmdHFiClassCalcNewKey,          1,      "[options..] Calc Diversified keys (blocks 3 & 4) to write new keys"},
+       {"chk",         CmdHFiClassCheckKeys,           0,      "            Check keys"},      
        {"clone",       CmdHFiClassCloneTag,            0,      "[options..] Authenticate and Clone from iClass bin file"},
        {"decrypt",     CmdHFiClassDecrypt,             1,      "[f <fname>] Decrypt tagdump" },
        {"dump",        CmdHFiClassReader_Dump,         0,      "[options..] Authenticate and Dump iClass tag's AA1"},
@@ -1711,7 +1870,7 @@ static command_t CommandTable[] =
        {"loclass",     CmdHFiClass_loclass,            1,      "[options..] Use loclass to perform bruteforce of reader attack dump"},
        {"managekeys",  CmdHFiClassManageKeys,          1,      "[options..] Manage the keys to use with iClass"},
        {"readblk",     CmdHFiClass_ReadBlock,          0,      "[options..] Authenticate and Read iClass block"},
-       {"reader",      CmdHFiClassReader,              0,      "            Read an iClass tag"},
+       {"reader",      CmdHFiClassReader,              0,      "            Look for iClass tags until a key or the pm3 button is pressed"},
        {"readtagfile", CmdHFiClassReadTagFile,         1,      "[options..] Display Content from tagfile"},
        {"replay",      CmdHFiClassReader_Replay,       0,      "<mac>       Read an iClass tag via Reply Attack"},
        {"sim",         CmdHFiClassSim,                 0,      "[options..] Simulate iClass tag"},
@@ -1722,6 +1881,7 @@ static command_t CommandTable[] =
 
 int CmdHFiClass(const char *Cmd)
 {
+       clearCommandBuffer();   
        CmdsParse(CommandTable, Cmd);
        return 0;
 }
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