Original post has no mention on how he did it. He just sent someone in comments a link to a forum where they develop some sort of dev button. Nothing more. I call sus on this one.
this post was submitted on 17 Mar 2026
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I'm betting the infotainment system runs on Android and they side loaded Moonlight or something similar.
Edit: There is a comment on the reddit post where he said he used the update system to execute scripts with admin privileges
Linux, but you can run Android apps once you root it :)
It's an excessively involved process at the moment, this individual managed it by using a common malware method, he imitated a legitimate OTA update but rewrote it to root the system. He was basically his own supply-chain-attacker: https://hackaday.com/2022/07/18/hacker-liberates-hyundai-head-unit-writes-custom-apps/
Didn't realize folks would want a proof-of-concept of HOW it was done.
If you want a proof-of-concept, like steps for how to do the thing, that's here: https://hackaday.com/2022/07/18/hacker-liberates-hyundai-head-unit-writes-custom-apps/
All this article does is just throws random hacker buzzwords for reader to get scared of a hacker boogieman. But, at least it has link to the blog. You shoul've sent it instead. This blog entry is what it should have been posted to begin with.
Haven't seen that OP posted this link somewhere on their original reddit post. Reading "I hacked X and had fun" with only a picture doesn't strike me as impressed. With a step-by-step journal - now we're talking.
¯_(ツ)_/¯
Figured I could trust you to find the link that says "WROTE A TUTORIAL."