Viva la Vita Vida OR How To Hack PlayStation Vita

Viva la Vita Vida OR How To Hack PlayStation Vita

Since its release in 2012, the PlayStation Vita has remained one of the most secure consumer devices on the market. We will describe the defenses and mitigations that it got right as well as insights into how we finally defeated it. The talk will be broken into two segments: software and hardware. First, we will give some background on the proprietary security co-processor we deem F00D, how it works, and what we had to do to reverse an architecture with minimal public information. Next, we will talk about hardware attacks on a real world secure hardware and detail the setup process and the attacks we were able to carry out. This talk assumes no prior knowledge in hardware and a basic background in system software. Focus will be on the methods and techniques we’ve developed along the way.

How do you hack a device running a full featured, security hardened, and completely proprietary operating system executed on a custom designed SoC? Although the PlayStation Vita did not reach the market success of its contemporaries, it was a surprisingly solid device security-wise. Sony learned from the mistakes of PS3 and PSP and there were (mostly) no “FAIL” moments. It carried exploit mitigations that are standard today but groundbreaking for a “popular” device in 2012: SMAP, kernel ASLR, &gt 2 security domains, and more. Molecule was the first group to run unsigned code on the device as well as the first to hack kernel mode and TrustZone. However, to target the security co-processor (F00D), we need to bring out the big guns. Using a highly customized version of the popular ChipWhisperer hardware, we carried out hardware attacks on the device including fault injection (glitching) and side channel analysis. In a board with twelve layers, dozens of unknown ICs, and hundreds of passives, how do you even begin to attack it without any information? We will start with the basics: a whirlwind tour of the theory behind the attacks. Then we will move to the practical application: mapping out the power domains of a SoC, soldering tips for microscopic points, finding a good trigger signal, finding a glitch target, and searching the right parameters. Finally, if time permits, we will also talk a bit about how to extend our existing setup to perform side channel analysis with a few modifications.

It is unfortunate that the Vita was such a niche device, but we hope this talk will inspire more people to pick it up. The Vita is dead, long live the Vita!

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