“My ultimate goal was to answer the question… is it possible to hack a car using JavaScript?”
A HackRF One, the WebUSB API and vanilla JavaScript are enough to receive, record and transmit from a browser tab. Gerard ran a rolljam attack on a friend’s car with consent. Rolling codes, the fix in most cars built after 1995, fall to jamming the fob while recording it. The same page opens doorbells and garage doors.