Proxmark3 community

nemer

Contributor

Registered: 2010-09-07

Posts: 34

Mifare Classic Stand-Alone for 3 modes !

Thanking for merlok, I'm begining my research on my own PM3!
The original PM3 Stand-Alone Mode is just for recording and simulating 125K cards.But my study focusing on Mifare Classic 1K.So I tried to edit the code to perform some useful function ,such as simulating a fixed UID , sniffing and recording-replaying UID in stand-alone mode.My code as below:

File:appmain.c

#ifdef WITH_LF
// Nemer's sniff and repeat routine
void NemerRun()
{
  DbpString("Nemer's Stand-alone mode! No PC necessary.");

  // 3 possible options:1-simulate a fixed uid;2-siffer;3-recording-replaying
  unsigned int lo=0;
  uint8_t cuid[4]={ 0x00,0x00,0x00,0x00 };;
  int select=0;
  int opt=3;
  int uid[4]={0x2E,0x8C,0x80,0x38};
  int respon=0;
  LED(LED_RED,  200);
  LED(LED_ORANGE, 200);
  LED(LED_GREEN,  200);
  LED(LED_ORANGE, 200);
  LED(LED_RED,  200);
  for(;;)
  {
    LEDsoff();
    LED(1<<(select),0);
    int button_pressed = BUTTON_HELD(1000);
      SpinDelay(300);
    if (button_pressed > 0)   //hold the button for 1s to run selected mode
    {
      if (select==0)  //mode 1:simulating a fixed uid
      {  
        LEDsoff();
        for(int i=0;i<4;i++)
        {
          lo=lo|(uid[i]&0xff);
          if (i<3)
          {
          lo=lo<<8;
          }
        }
        while(BUTTON_PRESS())
        WDT_HIT();
        SpinDelay(500);
        Dbprintf("Simulating %x %x %x %x", uid[0],uid[1],uid[2],uid[3]);
        SimulateIso14443aTag(lo);
        Dbprintf("Simulating Done");
        // Turn on selected LED
        return;
      }
      else if(select==1)   //mode 2:sniffing
      {
        LEDsoff();
        Dbprintf("Snooping");
        while(BUTTON_PRESS())
        WDT_HIT();
        SpinDelay(500);
        SnoopIso14443a();
        Dbprintf("Snooping Done");
        return;
      }
      else   //mode 3:recording-replaying
      {
        LEDsoff();
        while(BUTTON_PRESS())
        WDT_HIT();
        SpinDelay(500);
        respon=iso14443a_select_card(cuid,NULL,NULL);
        Dbprintf("Recorded %x %x %x %x", cuid[0],cuid[1],cuid[2],cuid[3]);
        for(int i=0;i<4;i++)
        {
          lo=lo|(cuid[i]&0xff);
          if (i<3)
          {
          lo=lo<<8;
          }
        }
        while(BUTTON_PRESS())
        WDT_HIT();
        SpinDelay(500);
        Dbprintf("Simulating %x %x %x %x", cuid[0],cuid[1],cuid[2],cuid[3]);
        SimulateIso14443aTag(lo);
        Dbprintf("Simulating Done");
        // Turn on selected LED
        return;
      }
    }
    else if(button_pressed) //click button to switch mode
    {
      select++;
      select=select%opt;
    }
  }
}
#endif

There is a problem in the codes above and make me crying!!! when I wanna to record a new card's uid ,the PM3 always hung up...But,if I use "hf 14a reader" to read a uid first,and then press button on PM3 to run the stand-alone mode 3,it works...I have no idea why this happon.Who can help me !!! Come dude,fix my bugs...

merlok

Contributor

Registered: 2011-05-16

Posts: 132

Re: Mifare Classic Stand-Alone for 3 modes !

uid array must be 8 bytes long

P.S. as for my full emulation of mifare card -  i will start working at the end of next week (after completed code for nested auth).

Last edited by merlok (2011-06-05 08:15:55)

uberdude

Contributor

Registered: 2011-05-24

Posts: 17

Re: Mifare Classic Stand-Alone for 3 modes !

Let me know if you get the bugs worked out, I just finished a portable proxmark (http://www.proxmark.org/forum/viewtopic.php?id=858) and would love some standalone HF modes so I can replace the thick LF antenna.

I mostly do hardware but when I get some time, I'll try to take a look at the code.

moebius

Contributor

Registered: 2011-03-10

Posts: 206

Re: Mifare Classic Stand-Alone for 3 modes !

Any updates on this?