A failed bruteforce attack on the EFI PIN lock of a MacBook Pro

orvtech.com

9 pointsorvtech6 comments

I wish there were more posts on HN like this. This is super cool, interesting, and a neat simple solution to a problem, even if it didn't work in the end!

Yeah, it was my bad... I should have replaced the HDD with another one and kept his old data while trying this.

I even use testdisk in an attempt to recover the HDD but had no luck.

I don't think recovery after dd would be possible. Also, why if=/dev/random and not if=/dev/zero?

It is a link of this chains of bad decisions but I did not wanted the information to be recovered in any way.

Testdisk managed to recover most information except that some part of the GPT were corrupted.

Initially I though this lock resided on the disk only, specially since it had a nice UI. I thought "this cant be the bios"

Yay for UEFI.

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