4 ms·

Here is a similar attack using HackRF: https://www.youtube.com/watch?v=JomewN_1OdE https://www.youtube.com/watch?v=JomewN_1OdE

• wallaBBB 5y ago
  This one is significantly different, here fob is pressed outside the vehicle range, and then signal is replayed at vehicle range. Rolling Code does not help here since the vehicle never received the original signal from the key. Thus it is for the first time played to the vehicle, and no rolling code increment is expected compared to the key's initial rolling code value. The point of rolling code is that same signal cannot be used twice to open the vehicle.