Yifan Lu publishes write up on The First F00D Exploit and Xerpi posts Vita Linux

July 29th, 2019, 21:49 Posted By: wraggster

For HENkaku’s 3 year anniversary, Yifan Lu has something in store as well although it isn’t in the form of some massive release but of an interesting write-up. This write-up, which was originally written in January 2019 was intended to be published when somebody found the same vulnerability in 0x50002 service that it discuses.
If you want some interesting reading material, then make sure to read Yifan Lu’s write up on the first F00D exploit!

Unfortunately, this didn’t happen even though there were various hints on the HENkaku Wiki that the service buggy probably due to lack of interest in hacking the obscure F00D processor. As usual with Yifan Lu’s blog posts, it’s pretty well written and the gist of it can be grasped by anyone with limited knowledge of computer security so if you’re into learning how vulnerabilities/exploit work, you should surely give it a read when you don’t have much on your hands!

On the other hand, Xerpi has recently posted build instructions for generating a Linux kernel to boot with his PSVita Linux Loader software. Unfortunately, Vita Linux hasn’t seen much progress after the initial groundwork done in December of last year but Xerpi’s known for making the seemingly impossible possible, which was the case with udcd_uvc so work on Vita Linux might continue someday. The main purpose of these build instructions is probably to help more experienced developers to get working on improving the PSVita more quickly but aren’t very useful for regular users as a precompiled Linux kernel can already be downloaded. It’s important to note that Vita Linux doesn’t support the PSVita’s display so if you boot it, you’ll just see a black screen; output is currently available via UART0 which is a debug interface that requires soldering to use. Thanks for the heads-up on this @TheheroGAC

http://wololo.net/2019/07/29/psvita-...-instructions/

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