CODEWITHSUNDEEP
gnuradio-companion
Paola Ngwe
Paola Ngwe

Reputation: 31

unblocking a car with hackrf One and gnu radio companion does not work properly

I'm new to SDR, I'm trying to perform a replay attack that consists of unlocking a blocked car with hackRF ONE and the software gnu radio companion but the problem is that when I record the unlock signal, then I run the replay attack, it locks the car if it is unlocked and does nothing if it is locked. I want to clarify that I used as a frequency of 433 Megahertz. I would have liked to share my flowgraph but my reputation does not allow me. If anyone had a similar problem or know the solution to my problem, please share with me. Thank you

Upvotes: 1

Views: 1063

Answers (1)

zhovner
zhovner

Reputation: 59

Probably your key fob is using challenge-response exchange with cryptography. Try to use URH (Universal Radio Hacker) to analyze protocol.

Check this video tutorial playlist https://www.youtube.com/watch?list=PLlKjreY6G-1EKKBs9sucMdk8PwzcFuIPB&v=kuubkTDAxwA

And this keynote A Suite for Analyzing and Attacking Stateful Wireless Protocols

And my simple tutorial about replay attack https://habr.com/ru/434634/

Upvotes: 2

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