Reverse Engineering a Protocol

[sk8board]

@pascallanger Is there a tutorial of how to reverse engineer an RC 2.4GHz protocol?

Do you start with a logic analyzer between the microprocessor and the RF chip or do you use something like Universal Radio Hacker?

Thank you,

[pascallanger]

I've never written a tutorial...
Spi bus spying was very popular in the past and still on some models.
But most of the chips now have the RF on board. In this case you need to listen over the air with SDR and see if you can understand what's being sent.
Let me know if you have a real thing you want to reverse and I will guide you.

[sk8board]

Thank you for your offer. What SDR device do you recommend?

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-------- Original Message --------

On 8/13/24 6:01 AM, pascallanger wrote: I've never written a tutorial... Spi bus spying was very popular in the past and still on some models. But most of the chips now have the RF on board. In this case you need to listen over the air with SDR and see if you can understand what's being sent. Let me know if you have a real thing you want to reverse and I will guide you. — Reply to this email directly, [view it on GitHub](#1000 (comment)), or [unsubscribe](https://github.com/notifications/unsubscribe-auth/AXDIBJU3G5VO23ISRA6DIHLZRHKN5AVCNFSM6AAAAABMNEVR6CVHI2DSMVQWIX3LMV43URDJONRXK43TNFXW4Q3PNVWWK3TUHMYTAMZSGQYDGOI). You are receiving this because you authored the thread.Message ID: ***@***.***>

[pascallanger]

I have a Pluto SDR but a hackrf is a good choice.