Rolling codes explained #flipperzero

Is my car or carport at risk from attacks from a Flipper Zero?
#rollingcodes #flipperhacks #carport

[procheathepitai]

If you're able to Read a signal instead of Read Raw, the FZ has built-in rolling code. But you must pinpoint the exact frequency. Use the Frequency Analyzer to pinpoint the frequency, making sure its the same frequency at least four times and then hold the center button and it automatically take you to Read and then from there you can config and get a more exact reading before saving it to be emulated later.

[mostfunnestchannel]

Very well explained, you are good at putting things in simple terms.

[habez]

Im not sure about the last part in the video. In a rolling code system, a transmission must be successful for the code to be sent and the expected code to change. When a transmission is successful, the code sequence is updated in both the remote control and the vehicle. This ensures synchronization, and the next time you use the key, a new code is generated based on the updated sequence. This approach prevents unauthorized attempts to capture or reproduce earlier codes, enhancing security.

[alextrezvy]

04:40: What if the key was pressed one or more times out of range? Then the next time it will send "3xPi" or "4xPi" while the receiver expects "2xPi". How the receiver will treat this?

[minibikemadman]

my flipper just shipped..can't friggin wait for it to show up next week.

[iamnode]

your car garage explanation is so good

[greyship]

How does the remote control know which code is next? eg if I press it 5 times and i'm out of range of the receiver, how does it know that the code is used or not. Also, is there a limit to the number of codes in general?

[GeneralThargor]

So, is there a two way communication with the FOB and the receiver? or the fob just blindly sends the next one until it runs out, or recycles it's table? It's a great video but leaves me with more questions!

[draconicproductionsinactiv]

rolling codes + signal jammer can permanently disable a remote so for example, there is a jammer active and then the remote button doesn't work then if rolling codes does not loop and go on forever than the device will be rendered unusable unless you find a way to reset rolling code to 1

[murkypuddle]

thanks! you know, even after doing some research on rolling codes, I still never understood how they work. but I get it now! When you press a key fob it creates a "good" code and tries to communicate with the door/car, etc. When it reaches it, the code is now dead and can't be reused. However, if you're able to isolate the keyfob from the car/door whatever, then the codes created and recorded are still good, only until they're used. great video. i was finally able to store a few codes for my garage (one time my keyfob died and I had to pick the door open).

[gabrieleserafini]

aren't rolling codes really easy to clone/inferred if you can record a relatively high number of signals?

[der-]

Very well made videos, hopefully you keep making them!

[MrBobHaley]

Isn't there any way to read multiple signals and get the formula/algorithm at which the rerolling is performed?

[Cysecsg]

So what happens when you recorded 618, then the legit user trying to unlock his car, his car key will generate third set of code? It’s not synced anymore. How to solve that? Supposedly he has no control over that flipper

[AffyisAffy]

Im really surprised there isn't an acknowledgement signal involved here somewhere. I guess the FZ doesn't need it, you just go to the next code

[grzegorzp.]

I don't understand one thing..
How the remote can know the the first or second code that was jammed didn't work? It is a transmitter, not a reciever..
On Peter Fairlie channel he presented something else.. The codes that were jammed (e.g. #1, #2... #7) can be used ONLY if the remote DIDN'T send next one.
Even without the original remote.. if #1 worked, after that with Flipper he used #6 then all previous #2-#5 became useles.
So the logic says, that remote sends consecutive codes (out of probably a huge base of codes).. And one use of original remote/keyfob should make all previous ones inactive..

Could you test that too?

[bruno-devs]

So it is not possible to re-record the rolling code on a control and use it normally as there will always be this change in the pin?

[bubbermelon]

Solution is simple. I use a smart relay to open my garage door connected to Home Assistant. Decrypt a 4G /5G communication with HTTPS using flipper :) Also I can open my garage door from anywhere when a delivery guy has to put a package inside. These remotes are outdated.

[arosiek]

Hi, lets pretend that I pushed the button on my garage opener device couple of times in a different city. Why it still works when I get back home?

[GreenStorm]

Doesn't recording and using one or more rolling codes in the flipper "desync" the key fob?
So to use the F0 as a key for a rolling code fob one would have to either store many keys in advance, and then replay them, and then also keep count for the fob itself. To actually replace the fob the flipper would need to know the algorithm. Huh. I learned something here, thanks for the video!