A significant consequence of this attack is that the original, legitimate keyfob is immediately desynchronized from the vehicle and ceases to function. This could be the first sign for an owner that their vehicle’s security has been compromised.
I think the first sign would be the stolen car
How does this work if a family is using two keyfobs? Does each one have its own rolling code?
Technically, the other fob shouldn’t be affected if it works the way I think it does. There’s usually a maximum number of keys synced to the vehicle.
This attack basically forces the key fob the flipper zero is substituting itself for to fall out of sync because the flipper zero doesn’t transmit the rollover response from the vehicle back to the key fob. So the F0 sends the rolling code it intercepted from the key fob to the vehicle. Vehicle is like, yep, that’s matches, and then it does it’s rollover and sends out the rollover response. The response doesn’t get back to the key because of range etc and then the key remains a step behind the vehicle in the rollover sequence from then on out.
Technically I think
theythe key could potentially be resynced to the car. (My understanding is that a key of the correct type could be synced to any car that it can be programmed for so long as the key isn’t physically damaged, and the security module isn’t compromised with malicious code that would prevent it).Yeah. This is what I assumed also. Thanks for your input.
Yeah I would assume there’s a maximum number of fobs you can register to an individual car and it just keeps the state for all of them individually
That’s the only way I think it could work. Makes sense. Thanks for your input.
Until I see proof of concept in action I’m going to be suspicious that this is as bad as the sensational headlines claim.
Hysterica gets clicks, gets news coverage then turns into nothing more times than not.
Talking Sasquatch did it to his car on video, it’s on his youtube.
And people wonder why I use my key toget into the car.
Why do you use your key toget into the car?
Because of some potential but low risk attack in the future that would be covered by insurance? Sounds like a posting in the ass for little gain.
I’m not going to deal with insurance if I can prevent a theft in the first place.
Never seen one of these, huh?
(Amazon link, for those who’d like a warning.)
Anybody know if this disables any fob or just one? I wouldn’t mind using my Flipper for my car, but my wife still needs to drive it.
I would check YouTube to see how complicated pairing a new fob with the car is. Some are pretty straightforward with just a few button presses on the fob and in the car.
If that’s easy to do I don’t see why you couldn’t clone the original fob and then re-pair it as a ‘new’ key afterwards.
Just one, there’s no way your multiple fobs could sync with each other to begin with.
