added PSK2 to lf simpsk

[proxmark3-svn] / client / cmdhficlass.c

diff --git a/client/cmdhficlass.c b/client/cmdhficlass.c
index dd0a8e2fd905605c7a03b60cd12934f77633856d..31f7ba973f8d2a956194d9152fdf65584b3f76a7 100644 (file)
--- a/client/cmdhficlass.c
+++ b/client/cmdhficlass.c
@@ -29,16 +29,17 @@
 #include "loclass/ikeys.h"
 #include "loclass/elite_crack.h"
 #include "loclass/fileutils.h"
 #include "loclass/ikeys.h"
 #include "loclass/elite_crack.h"
 #include "loclass/fileutils.h"

+#include "protocols.h"

 
 static int CmdHelp(const char *Cmd);
 
 int xorbits_8(uint8_t val)
 {
 
 static int CmdHelp(const char *Cmd);
 
 int xorbits_8(uint8_t val)
 {

-    uint8_t res = val ^ (val >> 1); //1st pass
-    res = res ^ (res >> 1);            // 2nd pass
-    res = res ^ (res >> 2);            // 3rd pass
-    res = res ^ (res >> 4);                    // 4th pass
-    return res & 1;
+       uint8_t res = val ^ (val >> 1); //1st pass
+       res = res ^ (res >> 1);                 // 2nd pass
+       res = res ^ (res >> 2);                 // 3rd pass
+       res = res ^ (res >> 4);                         // 4th pass
+       return res & 1;

 }
 
 int CmdHFiClassList(const char *Cmd)
 }
 
 int CmdHFiClassList(const char *Cmd)


@@ -49,77 +50,73 @@ int CmdHFiClassList(const char *Cmd)
 
 int CmdHFiClassSnoop(const char *Cmd)
 {
 
 int CmdHFiClassSnoop(const char *Cmd)
 {

-  UsbCommand c = {CMD_SNOOP_ICLASS};
-  SendCommand(&c);
-  return 0;
+       UsbCommand c = {CMD_SNOOP_ICLASS};
+       SendCommand(&c);
+       return 0;

 }
 }

-#define NUM_CSNS 15
-int CmdHFiClassSim(const char *Cmd)
+int usage_hf_iclass_sim()

 {
 {

-  uint8_t simType = 0;
-  uint8_t CSN[8] = {0, 0, 0, 0, 0, 0, 0, 0};
-
-  if (strlen(Cmd)<1) {
-       PrintAndLog("Usage:  hf iclass sim [0 <CSN>] | x");
+       PrintAndLog("Usage:  hf iclass sim <option> [CSN]");

        PrintAndLog("        options");
        PrintAndLog("                0 <CSN> simulate the given CSN");
        PrintAndLog("                1       simulate default CSN");
        PrintAndLog("        options");
        PrintAndLog("                0 <CSN> simulate the given CSN");
        PrintAndLog("                1       simulate default CSN");

-       PrintAndLog("                2       iterate CSNs, gather MACs");
-       PrintAndLog("        sample: hf iclass sim 0 031FEC8AF7FF12E0");
-       PrintAndLog("        sample: hf iclass sim 2");
+       PrintAndLog("                2       Reader-attack, gather reader responses to extract elite key");
+       PrintAndLog("                3       Full simulation using emulator memory (see 'hf iclass eload')");
+       PrintAndLog("        example: hf iclass sim 0 031FEC8AF7FF12E0");
+       PrintAndLog("        example: hf iclass sim 2");
+       PrintAndLog("        example: hf iclass eload 'tagdump.bin'");
+       PrintAndLog("                 hf iclass sim 3");

        return 0;
        return 0;

-  }    
-
-  simType = param_get8(Cmd, 0);
-
-  if(simType == 0)
-  {
-         if (param_gethex(Cmd, 1, CSN, 16)) {
-                 PrintAndLog("A CSN should consist of 16 HEX symbols");
-                 return 1;
-         }
-         PrintAndLog("--simtype:%02x csn:%s", simType, sprint_hex(CSN, 8));
-
-  }
-  if(simType > 2)
-  {
-         PrintAndLog("Undefined simptype %d", simType);
-         return 1;
-  }
-  uint8_t numberOfCSNs=0;
+}
+
+#define NUM_CSNS 15
+int CmdHFiClassSim(const char *Cmd)
+{
+       uint8_t simType = 0;
+       uint8_t CSN[8] = {0, 0, 0, 0, 0, 0, 0, 0};
+
+       if (strlen(Cmd)<1) {
+               return usage_hf_iclass_sim();
+       }
+       simType = param_get8ex(Cmd, 0, 0, 10);
+
+       if(simType == 0)
+       {
+               if (param_gethex(Cmd, 1, CSN, 16)) {
+                       PrintAndLog("A CSN should consist of 16 HEX symbols");
+                       return usage_hf_iclass_sim();
+               }
+
+               PrintAndLog("--simtype:%02x csn:%s", simType, sprint_hex(CSN, 8));
+       }
+       if(simType > 3)
+       {
+               PrintAndLog("Undefined simptype %d", simType);
+               return usage_hf_iclass_sim();
+       }

 
 

+       uint8_t numberOfCSNs=0;

        if(simType == 2)
        {
                UsbCommand c = {CMD_SIMULATE_TAG_ICLASS, {simType,NUM_CSNS}};
                UsbCommand resp = {0};
 
        if(simType == 2)
        {
                UsbCommand c = {CMD_SIMULATE_TAG_ICLASS, {simType,NUM_CSNS}};
                UsbCommand resp = {0};
 

-               /*uint8_t csns[8 * NUM_CSNS] = {
-                        0x00,0x0B,0x0F,0xFF,0xF7,0xFF,0x12,0xE0 ,
-                        0x00,0x13,0x94,0x7e,0x76,0xff,0x12,0xe0 ,
-                        0x2a,0x99,0xac,0x79,0xec,0xff,0x12,0xe0 ,
-                        0x17,0x12,0x01,0xfd,0xf7,0xff,0x12,0xe0 ,
-                        0xcd,0x56,0x01,0x7c,0x6f,0xff,0x12,0xe0 ,
-                        0x4b,0x5e,0x0b,0x72,0xef,0xff,0x12,0xe0 ,
-                        0x00,0x73,0xd8,0x75,0x58,0xff,0x12,0xe0 ,
-                        0x0c,0x90,0x32,0xf3,0x5d,0xff,0x12,0xe0 };
-*/
-      
-       uint8_t csns[8*NUM_CSNS] = {
-        0x00, 0x0B, 0x0F, 0xFF, 0xF7, 0xFF, 0x12, 0xE0,
-        0x00, 0x04, 0x0E, 0x08, 0xF7, 0xFF, 0x12, 0xE0,
-        0x00, 0x09, 0x0D, 0x05, 0xF7, 0xFF, 0x12, 0xE0,
-        0x00, 0x0A, 0x0C, 0x06, 0xF7, 0xFF, 0x12, 0xE0,
-        0x00, 0x0F, 0x0B, 0x03, 0xF7, 0xFF, 0x12, 0xE0,
-        0x00, 0x08, 0x0A, 0x0C, 0xF7, 0xFF, 0x12, 0xE0,
-        0x00, 0x0D, 0x09, 0x09, 0xF7, 0xFF, 0x12, 0xE0,
-        0x00, 0x0E, 0x08, 0x0A, 0xF7, 0xFF, 0x12, 0xE0,
-        0x00, 0x03, 0x07, 0x17, 0xF7, 0xFF, 0x12, 0xE0,
-        0x00, 0x3C, 0x06, 0xE0, 0xF7, 0xFF, 0x12, 0xE0,
-        0x00, 0x01, 0x05, 0x1D, 0xF7, 0xFF, 0x12, 0xE0,
-        0x00, 0x02, 0x04, 0x1E, 0xF7, 0xFF, 0x12, 0xE0,
-        0x00, 0x07, 0x03, 0x1B, 0xF7, 0xFF, 0x12, 0xE0,
-        0x00, 0x00, 0x02, 0x24, 0xF7, 0xFF, 0x12, 0xE0,
-        0x00, 0x05, 0x01, 0x21, 0xF7, 0xFF, 0x12, 0xE0 };
+               uint8_t csns[8*NUM_CSNS] = {
+                       0x00, 0x0B, 0x0F, 0xFF, 0xF7, 0xFF, 0x12, 0xE0,
+                       0x00, 0x04, 0x0E, 0x08, 0xF7, 0xFF, 0x12, 0xE0,
+                       0x00, 0x09, 0x0D, 0x05, 0xF7, 0xFF, 0x12, 0xE0,
+                       0x00, 0x0A, 0x0C, 0x06, 0xF7, 0xFF, 0x12, 0xE0,
+                       0x00, 0x0F, 0x0B, 0x03, 0xF7, 0xFF, 0x12, 0xE0,
+                       0x00, 0x08, 0x0A, 0x0C, 0xF7, 0xFF, 0x12, 0xE0,
+                       0x00, 0x0D, 0x09, 0x09, 0xF7, 0xFF, 0x12, 0xE0,
+                       0x00, 0x0E, 0x08, 0x0A, 0xF7, 0xFF, 0x12, 0xE0,
+                       0x00, 0x03, 0x07, 0x17, 0xF7, 0xFF, 0x12, 0xE0,
+                       0x00, 0x3C, 0x06, 0xE0, 0xF7, 0xFF, 0x12, 0xE0,
+                       0x00, 0x01, 0x05, 0x1D, 0xF7, 0xFF, 0x12, 0xE0,
+                       0x00, 0x02, 0x04, 0x1E, 0xF7, 0xFF, 0x12, 0xE0,
+                       0x00, 0x07, 0x03, 0x1B, 0xF7, 0xFF, 0x12, 0xE0,
+                       0x00, 0x00, 0x02, 0x24, 0xF7, 0xFF, 0x12, 0xE0,
+                       0x00, 0x05, 0x01, 0x21, 0xF7, 0xFF, 0x12, 0xE0 };

 
                memcpy(c.d.asBytes, csns, 8*NUM_CSNS);
 
 
                memcpy(c.d.asBytes, csns, 8*NUM_CSNS);
 


@@ -164,124 +161,124 @@ int CmdHFiClassSim(const char *Cmd)
                SendCommand(&c);
        }
 
                SendCommand(&c);
        }
 

-  return 0;
+       return 0;

 }
 
 int CmdHFiClassReader(const char *Cmd)
 {
 }
 
 int CmdHFiClassReader(const char *Cmd)
 {

-  UsbCommand c = {CMD_READER_ICLASS, {0}};
-  SendCommand(&c);
-    UsbCommand resp;
-  while(!ukbhit()){
-      if (WaitForResponseTimeout(CMD_ACK,&resp,4500)) {
-            uint8_t isOK    = resp.arg[0] & 0xff;
-            uint8_t * data  = resp.d.asBytes;
-
-            PrintAndLog("isOk:%02x", isOK);
-            if( isOK == 0){
-                //Aborted
-                PrintAndLog("Quitting...");
-                return 0;
-            }
-            if(isOK > 0)
-            {
-                PrintAndLog("CSN: %s",sprint_hex(data,8));
-            }
-            if(isOK >= 1)
-            {
-                PrintAndLog("CC: %s",sprint_hex(data+8,8));
-            }else{
-                PrintAndLog("No CC obtained");
-            }
-        } else {
-            PrintAndLog("Command execute timeout");
-        }
-    }
-
-  return 0;
+       UsbCommand c = {CMD_READER_ICLASS, {0}};
+       SendCommand(&c);
+       UsbCommand resp;
+       while(!ukbhit()){
+               if (WaitForResponseTimeout(CMD_ACK,&resp,4500)) {
+                       uint8_t isOK    = resp.arg[0] & 0xff;
+                       uint8_t * data  = resp.d.asBytes;
+
+                       PrintAndLog("isOk:%02x", isOK);
+                       if( isOK == 0){
+                               //Aborted
+                               PrintAndLog("Quitting...");
+                               return 0;
+                       }
+                       if(isOK > 0)
+                       {
+                               PrintAndLog("CSN: %s",sprint_hex(data,8));
+                       }
+                       if(isOK >= 1)
+                       {
+                               PrintAndLog("CC: %s",sprint_hex(data+8,8));
+                       }else{
+                               PrintAndLog("No CC obtained");
+                       }
+               } else {
+                       PrintAndLog("Command execute timeout");
+               }
+       }
+
+       return 0;

 }
 
 int CmdHFiClassReader_Replay(const char *Cmd)
 {
 }
 
 int CmdHFiClassReader_Replay(const char *Cmd)
 {

-  uint8_t readerType = 0;
-  uint8_t MAC[4]={0x00, 0x00, 0x00, 0x00};
+       uint8_t readerType = 0;
+       uint8_t MAC[4]={0x00, 0x00, 0x00, 0x00};

 
 

-  if (strlen(Cmd)<1) {
-    PrintAndLog("Usage:  hf iclass replay <MAC>");
-    PrintAndLog("        sample: hf iclass replay 00112233");
-    return 0;
-  }
+       if (strlen(Cmd)<1) {
+               PrintAndLog("Usage:  hf iclass replay <MAC>");
+               PrintAndLog("        sample: hf iclass replay 00112233");
+               return 0;
+       }

 
 

-  if (param_gethex(Cmd, 0, MAC, 8)) {
-    PrintAndLog("MAC must include 8 HEX symbols");
-    return 1;
-  }
+       if (param_gethex(Cmd, 0, MAC, 8)) {
+               PrintAndLog("MAC must include 8 HEX symbols");
+               return 1;
+       }

 
 

-  UsbCommand c = {CMD_READER_ICLASS_REPLAY, {readerType}};
-  memcpy(c.d.asBytes, MAC, 4);
-  SendCommand(&c);
+       UsbCommand c = {CMD_READER_ICLASS_REPLAY, {readerType}};
+       memcpy(c.d.asBytes, MAC, 4);
+       SendCommand(&c);

 
 

-  return 0;
+       return 0;

 }
 
 int CmdHFiClassReader_Dump(const char *Cmd)
 {
 }
 
 int CmdHFiClassReader_Dump(const char *Cmd)
 {

-  uint8_t readerType = 0;
-  uint8_t MAC[4]={0x00,0x00,0x00,0x00};
-  uint8_t KEY[8]={0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00};
-  uint8_t CSN[8]={0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00};
-  uint8_t CCNR[12]={0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00};
-  //uint8_t CC_temp[8]={0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00};
-  uint8_t div_key[8]={0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00};
-  uint8_t keytable[128] = {0};
-  int elite = 0;
-  uint8_t *used_key;
-  int i;
-  if (strlen(Cmd)<1) 
-  {
-    PrintAndLog("Usage:  hf iclass dump <Key> [e]");
-    PrintAndLog("        Key    - A 16 byte master key");
-    PrintAndLog("        e      - If 'e' is specified, the key is interpreted as the 16 byte");
-    PrintAndLog("                 Custom Key (KCus), which can be obtained via reader-attack");
-    PrintAndLog("                 See 'hf iclass sim 2'. This key should be on iclass-format");
-    PrintAndLog("        sample: hf iclass dump 0011223344556677");
-
-
-    return 0;
-  }
-
-  if (param_gethex(Cmd, 0, KEY, 16)) 
-  {
-    PrintAndLog("KEY must include 16 HEX symbols");
-    return 1;
-  }
-
-  if (param_getchar(Cmd, 1) == 'e')
-  {
-    PrintAndLog("Elite switch on");
-    elite = 1;
-
-    //calc h2
-    hash2(KEY, keytable);
-    printarr_human_readable("keytable", keytable, 128);
-
-  }
-
-  UsbCommand resp;
-  uint8_t key_sel[8] = {0};
-  uint8_t key_sel_p[8] = { 0 };
-
-  UsbCommand c = {CMD_READER_ICLASS, {0}};
-  c.arg[0] = FLAG_ICLASS_READER_ONLY_ONCE| FLAG_ICLASS_READER_GET_CC;
-  SendCommand(&c);
-  
-
-
-  if (!WaitForResponseTimeout(CMD_ACK,&resp,4500))
-  {
-         PrintAndLog("Command execute timeout");
-         return 0;
-  }
+       uint8_t readerType = 0;
+       uint8_t MAC[4]={0x00,0x00,0x00,0x00};
+       uint8_t KEY[8]={0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00};
+       uint8_t CSN[8]={0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00};
+       uint8_t CCNR[12]={0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00};
+       //uint8_t CC_temp[8]={0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00};
+       uint8_t div_key[8]={0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00};
+       uint8_t keytable[128] = {0};
+       int elite = 0;
+       uint8_t *used_key;
+       int i;
+       if (strlen(Cmd)<1)
+       {
+               PrintAndLog("Usage:  hf iclass dump <Key> [e]");
+               PrintAndLog("        Key    - A 16 byte master key");
+               PrintAndLog("        e      - If 'e' is specified, the key is interpreted as the 16 byte");
+               PrintAndLog("                 Custom Key (KCus), which can be obtained via reader-attack");
+               PrintAndLog("                 See 'hf iclass sim 2'. This key should be on iclass-format");
+               PrintAndLog("        sample: hf iclass dump 0011223344556677");
+
+
+               return 0;
+       }
+
+       if (param_gethex(Cmd, 0, KEY, 16))
+       {
+               PrintAndLog("KEY must include 16 HEX symbols");
+               return 1;
+       }
+
+       if (param_getchar(Cmd, 1) == 'e')
+       {
+               PrintAndLog("Elite switch on");
+               elite = 1;
+
+               //calc h2
+               hash2(KEY, keytable);
+               printarr_human_readable("keytable", keytable, 128);
+
+       }
+
+       UsbCommand resp;
+       uint8_t key_sel[8] = {0};
+       uint8_t key_sel_p[8] = { 0 };
+
+       UsbCommand c = {CMD_READER_ICLASS, {0}};
+       c.arg[0] = FLAG_ICLASS_READER_ONLY_ONCE| FLAG_ICLASS_READER_GET_CC;
+       SendCommand(&c);
+
+
+
+       if (!WaitForResponseTimeout(CMD_ACK,&resp,4500))
+       {
+               PrintAndLog("Command execute timeout");
+               return 0;
+       }

 
        uint8_t isOK    = resp.arg[0] & 0xff;
        uint8_t * data  = resp.d.asBytes;
 
        uint8_t isOK    = resp.arg[0] & 0xff;
        uint8_t * data  = resp.d.asBytes;


@@ -325,7 +322,7 @@ int CmdHFiClassReader_Dump(const char *Cmd)
        PrintAndLog("Hash0, a.k.a diversified key, that is computed using Ksel and stored in the card (Block 3):");
        printvar("Div key", div_key, 8);
        printvar("CC_NR:",CCNR,12);
        PrintAndLog("Hash0, a.k.a diversified key, that is computed using Ksel and stored in the card (Block 3):");
        printvar("Div key", div_key, 8);
        printvar("CC_NR:",CCNR,12);

-       doMAC(CCNR,12,div_key, MAC);
+       doMAC(CCNR,div_key, MAC);

        printvar("MAC", MAC, 4);
 
        uint8_t iclass_data[32000] = {0};
        printvar("MAC", MAC, 4);
 
        uint8_t iclass_data[32000] = {0};


@@ -366,7 +363,9 @@ int CmdHFiClassReader_Dump(const char *Cmd)
                                        //create a preferred filename
                                        snprintf(filename, 100,"iclass_tagdump-%02x%02x%02x%02x%02x%02x%02x%02x",
                                                         CSN[0],CSN[1],CSN[2],CSN[3],
                                        //create a preferred filename
                                        snprintf(filename, 100,"iclass_tagdump-%02x%02x%02x%02x%02x%02x%02x%02x",
                                                         CSN[0],CSN[1],CSN[2],CSN[3],

-                                                        CSN[4],CSN[5],CSN[6],CSN[7]);
+                                                       CSN[4],CSN[5],CSN[6],CSN[7]);
+                                       //Place the div_key in block 3
+                                       memcpy(iclass_data+(3*8), div_key, 8);

                                        saveFile(filename,"bin",iclass_data, iclass_datalen );
                                }
                                //Aaaand we're finished
                                        saveFile(filename,"bin",iclass_data, iclass_datalen );
                                }
                                //Aaaand we're finished


@@ -376,7 +375,7 @@ int CmdHFiClassReader_Dump(const char *Cmd)
        }
 
 
        }
 
 

-  return 0;
+       return 0;

 }
 
 int hf_iclass_eload_usage()
 }
 
 int hf_iclass_eload_usage()


@@ -422,9 +421,12 @@ int CmdHFiClassELoad(const char *Cmd)
        fseek(f, 0, SEEK_SET);
 
        uint8_t *dump = malloc(fsize);
        fseek(f, 0, SEEK_SET);
 
        uint8_t *dump = malloc(fsize);

+
+

        size_t bytes_read = fread(dump, 1, fsize, f);
        fclose(f);
 
        size_t bytes_read = fread(dump, 1, fsize, f);
        fclose(f);
 

+       printIclassDumpInfo(dump);

        //Validate
 
        if (bytes_read < fsize)
        //Validate
 
        if (bytes_read < fsize)


@@ -450,83 +452,180 @@ int CmdHFiClassELoad(const char *Cmd)
        return 0;
 }
 
        return 0;
 }
 

+int usage_hf_iclass_decrypt()
+{
+       PrintAndLog("Usage: hf iclass decrypt f <tagdump> o ");
+       PrintAndLog("");
+       PrintAndLog("OBS! In order to use this function, the file 'iclass_decryptionkey.bin' must reside");
+       PrintAndLog("in the working directory. The file should be 16 bytes binary data");
+       PrintAndLog("");
+       PrintAndLog("example: hf iclass decrypt f tagdump_12312342343.bin");
+       PrintAndLog("");
+       PrintAndLog("OBS! This is pretty stupid implementation, it tries to decrypt every block after block 6. ");
+       PrintAndLog("Correct behaviour would be to decrypt only the application areas where the key is valid,");
+       PrintAndLog("which is defined by the configuration block.");
+       return 1;
+}
+
+int readKeyfile(const char *filename, size_t len, uint8_t* buffer)
+{
+       FILE *f = fopen(filename, "rb");
+       if(!f) {
+               PrintAndLog("Failed to read from file '%s'", filename);
+               return 1;
+       }
+       fseek(f, 0, SEEK_END);
+       long fsize = ftell(f);
+       fseek(f, 0, SEEK_SET);
+       size_t bytes_read = fread(buffer, 1, len, f);
+       fclose(f);
+       if(fsize != len)
+       {
+               PrintAndLog("Warning, file size is %d, expected %d", fsize, len);
+               return 1;
+       }
+       if(bytes_read != len)
+       {
+               PrintAndLog("Warning, could only read %d bytes, expected %d" ,bytes_read, len);
+               return 1;
+       }
+       return 0;
+}
+
+int CmdHFiClassDecrypt(const char *Cmd)
+{
+       uint8_t key[16] = { 0 };
+       if(readKeyfile("iclass_decryptionkey.bin", 16, key))
+       {
+               usage_hf_iclass_decrypt();
+               return 1;
+       }
+       PrintAndLog("Decryption file found... ");
+       char opt = param_getchar(Cmd, 0);
+       if (strlen(Cmd)<1 || opt == 'h')
+               return usage_hf_iclass_decrypt();
+
+       //Open the tagdump-file
+       FILE *f;
+       char filename[FILE_PATH_SIZE];
+       if(opt == 'f' && param_getstr(Cmd, 1, filename) > 0)
+       {
+               f = fopen(filename, "rb");
+       }else{
+               return usage_hf_iclass_decrypt();
+       }
+
+       fseek(f, 0, SEEK_END);
+       long fsize = ftell(f);
+       fseek(f, 0, SEEK_SET);
+       uint8_t enc_dump[8] = {0};
+       uint8_t *decrypted = malloc(fsize);
+       des3_context ctx = { DES_DECRYPT ,{ 0 } };
+       des3_set2key_dec( &ctx, key);
+       size_t bytes_read = fread(enc_dump, 1, 8, f);
+
+       //Use the first block (CSN) for filename
+       char outfilename[FILE_PATH_SIZE] = { 0 };
+       snprintf(outfilename,FILE_PATH_SIZE,"iclass_tagdump-%02x%02x%02x%02x%02x%02x%02x%02x-decrypted",
+                        enc_dump[0],enc_dump[1],enc_dump[2],enc_dump[3],
+                        enc_dump[4],enc_dump[5],enc_dump[6],enc_dump[7]);
+
+       size_t blocknum =0;
+       while(bytes_read == 8)
+       {
+               if(blocknum < 7)
+               {
+                       memcpy(decrypted+(blocknum*8), enc_dump, 8);
+               }else{
+                       des3_crypt_ecb(&ctx, enc_dump,decrypted +(blocknum*8) );
+               }
+               printvar("decrypted block", decrypted +(blocknum*8), 8);
+               bytes_read = fread(enc_dump, 1, 8, f);
+               blocknum++;
+       }
+       fclose(f);
+
+       saveFile(outfilename,"bin", decrypted, blocknum*8);
+
+       return 0;
+}

 
 int CmdHFiClass_iso14443A_write(const char *Cmd)
 {
 
 int CmdHFiClass_iso14443A_write(const char *Cmd)
 {

-  uint8_t readerType = 0;
-  uint8_t MAC[4]={0x00,0x00,0x00,0x00};
-  uint8_t KEY[8]={0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00};
-  uint8_t CSN[8]={0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00};
-  uint8_t CCNR[12]={0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00};
-  uint8_t div_key[8]={0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00};
-
-  uint8_t blockNo=0;
-  uint8_t bldata[8]={0};
-
-  if (strlen(Cmd)<3) 
-  {
-    PrintAndLog("Usage:  hf iclass write <Key> <Block> <Data>");
-    PrintAndLog("        sample: hf iclass write 0011223344556677 10 AAAAAAAAAAAAAAAA");
-    return 0;
-  }
-
-  if (param_gethex(Cmd, 0, KEY, 16)) 
-  {
-    PrintAndLog("KEY must include 16 HEX symbols");
-    return 1;
-  }
-  
-  blockNo = param_get8(Cmd, 1);
-  if (blockNo>32)
-  {
-        PrintAndLog("Error: Maximum number of blocks is 32 for iClass 2K Cards!");
-        return 1;
-  }
-  if (param_gethex(Cmd, 2, bldata, 8)) 
-  {
-        PrintAndLog("Block data must include 8 HEX symbols");
-        return 1;
-  }
-  
-  UsbCommand c = {CMD_ICLASS_ISO14443A_WRITE, {0}};
-  SendCommand(&c);
-  UsbCommand resp;
-
-  if (WaitForResponseTimeout(CMD_ACK,&resp,4500)) {
-    uint8_t isOK    = resp.arg[0] & 0xff;
-    uint8_t * data  = resp.d.asBytes;
-    
-    memcpy(CSN,data,8);
-    memcpy(CCNR,data+8,8);
-    PrintAndLog("DEBUG: %s",sprint_hex(CSN,8));
-       PrintAndLog("DEBUG: %s",sprint_hex(CCNR,8));
-       PrintAndLog("isOk:%02x", isOK);
-  } else {
-       PrintAndLog("Command execute timeout");
-  }
-
-  diversifyKey(CSN,KEY, div_key);
-
-  PrintAndLog("Div Key: %s",sprint_hex(div_key,8));
-  doMAC(CCNR, 12,div_key, MAC);
-
-  UsbCommand c2 = {CMD_ICLASS_ISO14443A_WRITE, {readerType,blockNo}};
-  memcpy(c2.d.asBytes, bldata, 8);
-  memcpy(c2.d.asBytes+8, MAC, 4);
-  SendCommand(&c2);
-
-  if (WaitForResponseTimeout(CMD_ACK,&resp,1500)) {
-    uint8_t isOK    = resp.arg[0] & 0xff;
-    uint8_t * data  = resp.d.asBytes;
-
-    if (isOK)
-      PrintAndLog("isOk:%02x data:%s", isOK, sprint_hex(data, 4));
-    else
-      PrintAndLog("isOk:%02x", isOK);
-  } else {
-      PrintAndLog("Command execute timeout");
-  }
-  return 0;
+       uint8_t readerType = 0;
+       uint8_t MAC[4]={0x00,0x00,0x00,0x00};
+       uint8_t KEY[8]={0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00};
+       uint8_t CSN[8]={0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00};
+       uint8_t CCNR[12]={0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00};
+       uint8_t div_key[8]={0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00};
+
+       uint8_t blockNo=0;
+       uint8_t bldata[8]={0};
+
+       if (strlen(Cmd)<3)
+       {
+               PrintAndLog("Usage:  hf iclass write <Key> <Block> <Data>");
+               PrintAndLog("        sample: hf iclass write 0011223344556677 10 AAAAAAAAAAAAAAAA");
+               return 0;
+       }
+
+       if (param_gethex(Cmd, 0, KEY, 16))
+       {
+               PrintAndLog("KEY must include 16 HEX symbols");
+               return 1;
+       }
+
+       blockNo = param_get8(Cmd, 1);
+       if (blockNo>32)
+       {
+               PrintAndLog("Error: Maximum number of blocks is 32 for iClass 2K Cards!");
+               return 1;
+       }
+       if (param_gethex(Cmd, 2, bldata, 8))
+       {
+               PrintAndLog("Block data must include 8 HEX symbols");
+               return 1;
+       }
+
+       UsbCommand c = {CMD_ICLASS_ISO14443A_WRITE, {0}};
+       SendCommand(&c);
+       UsbCommand resp;
+
+       if (WaitForResponseTimeout(CMD_ACK,&resp,4500)) {
+               uint8_t isOK    = resp.arg[0] & 0xff;
+               uint8_t * data  = resp.d.asBytes;
+
+               memcpy(CSN,data,8);
+               memcpy(CCNR,data+8,8);
+               PrintAndLog("DEBUG: %s",sprint_hex(CSN,8));
+               PrintAndLog("DEBUG: %s",sprint_hex(CCNR,8));
+               PrintAndLog("isOk:%02x", isOK);
+       } else {
+               PrintAndLog("Command execute timeout");
+       }
+
+       diversifyKey(CSN,KEY, div_key);
+
+       PrintAndLog("Div Key: %s",sprint_hex(div_key,8));
+       doMAC(CCNR, div_key, MAC);
+
+       UsbCommand c2 = {CMD_ICLASS_ISO14443A_WRITE, {readerType,blockNo}};
+       memcpy(c2.d.asBytes, bldata, 8);
+       memcpy(c2.d.asBytes+8, MAC, 4);
+       SendCommand(&c2);
+
+       if (WaitForResponseTimeout(CMD_ACK,&resp,1500)) {
+               uint8_t isOK    = resp.arg[0] & 0xff;
+               uint8_t * data  = resp.d.asBytes;
+
+               if (isOK)
+                       PrintAndLog("isOk:%02x data:%s", isOK, sprint_hex(data, 4));
+               else
+                       PrintAndLog("isOk:%02x", isOK);
+       } else {
+               PrintAndLog("Command execute timeout");
+       }
+       return 0;

 }
 int CmdHFiClass_loclass(const char *Cmd)
 {
 }
 int CmdHFiClass_loclass(const char *Cmd)
 {


@@ -550,13 +649,13 @@ int CmdHFiClass_loclass(const char *Cmd)
        char fileName[255] = {0};
        if(opt == 'f')
        {
        char fileName[255] = {0};
        if(opt == 'f')
        {

-                       if(param_getstr(Cmd, 1, fileName) > 0)
-                       {
-                               return bruteforceFileNoKeys(fileName);
-                       }else
-                       {
-                               PrintAndLog("You must specify a filename");
-                       }
+               if(param_getstr(Cmd, 1, fileName) > 0)
+               {
+                       return bruteforceFileNoKeys(fileName);
+               }else
+               {
+                       PrintAndLog("You must specify a filename");
+               }

        }
        else if(opt == 't')
        {
        }
        else if(opt == 't')
        {


@@ -583,20 +682,21 @@ static command_t CommandTable[] =
        {"reader",CmdHFiClassReader,    0,      "Read an iClass tag"},
        {"replay",CmdHFiClassReader_Replay,     0,      "Read an iClass tag via Reply Attack"},
        {"dump",        CmdHFiClassReader_Dump, 0,              "Authenticate and Dump iClass tag"},
        {"reader",CmdHFiClassReader,    0,      "Read an iClass tag"},
        {"replay",CmdHFiClassReader_Replay,     0,      "Read an iClass tag via Reply Attack"},
        {"dump",        CmdHFiClassReader_Dump, 0,              "Authenticate and Dump iClass tag"},

-       {"write",       CmdHFiClass_iso14443A_write,    0,      "Authenticate and Write iClass block"},
+//     {"write",       CmdHFiClass_iso14443A_write,    0,      "Authenticate and Write iClass block"},

        {"loclass",     CmdHFiClass_loclass,    1,      "Use loclass to perform bruteforce of reader attack dump"},
        {"eload",   CmdHFiClassELoad,    0,     "[experimental] Load data into iclass emulator memory"},
        {"loclass",     CmdHFiClass_loclass,    1,      "Use loclass to perform bruteforce of reader attack dump"},
        {"eload",   CmdHFiClassELoad,    0,     "[experimental] Load data into iclass emulator memory"},

+       {"decrypt", CmdHFiClassDecrypt,  1,     "Decrypt tagdump" },

        {NULL, NULL, 0, NULL}
 };
 
 int CmdHFiClass(const char *Cmd)
 {
        {NULL, NULL, 0, NULL}
 };
 
 int CmdHFiClass(const char *Cmd)
 {

-  CmdsParse(CommandTable, Cmd);
-  return 0;
+       CmdsParse(CommandTable, Cmd);
+       return 0;

 }
 
 int CmdHelp(const char *Cmd)
 {
 }
 
 int CmdHelp(const char *Cmd)
 {

-  CmdsHelp(CommandTable);
-  return 0;
+       CmdsHelp(CommandTable);
+       return 0;

 }
 }