Car Keyless Entry Replay Hack (Raspberry Pi)
Cybersecurity & RF Hacking

Car Keyless Entry Replay Hack (Raspberry Pi)

Case Study DetailsID: car-hacking-pi

Name

Muhammad Ahsan

ID

F2019376007

“Car Hacking System sing RTL SDR and RASPBERRY ”

Car Hacking System sing RTL SDR and RASPBERRY

IN This project we hack car using a RTL SDR and RASPBERRY.

Most RKEs operate at a frequency of 315 MHz for North America-made cars and at 433.92 MHz for European, Japanese and Asian cars.

First we use rtl sdr to check frequency of car key remote.

We use Airspay software for recording frequency .

So we get frequency of car key remote and know we record this frequency and then we do replay attack with the help of raspberry.

For doing this replay attack we use a software

“rpitx “

For installing this software we use these commands .

We connect RTL-SDR Dongle with raspberry pi to Do reply attack

We do reply attack using rpitx software in raspberry pi

We get this software from github

Source https://github.com/F5OEO/rpitx

After installing this software we use this command to record frequency:

“ rtl_sdr -s 250000 -g 42 -f 314650000 car_remote.iq ”

After recording frequency we do replay attack

We use this command for reply attack

“ ./sendiq -s 250000 -f 314650000 -t u8 -i car_remote.iq ”

“KNOW our car opens without key just doing this replay attack.”

The

End

Project Summary

Brief Description

Captured and replayed car key fob signals on the 314.65 MHz spectrum using low-cost hardware.

Methodology Summary

Captured the key transmission code using rtl_sdr command. Saved the signal as a raw IQ file. Re-transmitted the data stream using the sendiq library on a Raspberry Pi's GPIO pins.

Results & Performance

Unlocked the target vehicle doors programmatically using low-cost DIY equipment.

Tech Stack

RTL-SDRRaspberry PirpitxSub-GHz RF Transmission
Author:Muhammad Ahsan
Date:2025 - 2026
Class:security