I Hacked Into My Own Car

Summary by Krater

The host explores car key fob security vulnerabilities, explaining static codes, rolling codes, and Manchester encoding, and demonstrates how replay and roll jam attacks work using a HackRF One software-defined radio and Universal Radio Hacker software.

From the video

Answers: How do car key fob replay and roll jam attacks work?

• Car key fob security
• Static codes
• Rolling codes
• Manchester encoding
• Replay attack
• Roll jam attack
• HackRF One
• Universal Radio Hacker

What it concludes

• Static code systems are vulnerable to simple replay attacks where a signal is recorded and re-sent to unlock a car.
• Rolling codes prevent replay attacks by changing the code every time the button is pressed, ensuring old codes become invalid.
• A roll jam attack requires two radios: one to jam and record the car key signal, and a second to record a backup signal while withholding the first one.
• Modern BMW Mini keys are basically secure against a roll jam attack due to clock synchronization requirements.
• Manchester encoding ensures that every bit has a fixed length of time, making it easy to distinguish between zeros and ones.