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Following EPEEN's scene release, Installing PKG's and the PS4 Backup DevKit PoC, today PlayStation 4 developer @zecoxao announced on Twitter that the interactive teaser for the game Silent Hills called P.T. (Playable Teaser) has been decrypted and the game backup is playable on a PS4 Testkit console!

Credit also goes to AnB69947709 for providing the dumps and files and to PixelButts for testing the game backup on his PlayStation 4 development unit, with a torrent below for PS4 developers interested in sorting out how to load it on a retail console.

Spoiler

Here's a little background about the game from Wikipedia, to quote:

"P.T. (short for "playable teaser"), is a first-person psychological survival horror video game developed by Kojima Productions, under the pseudonym "7780s Studio", and published by Konami. The game was directed and designed by Hideo Kojima, in collaboration with film director Guillermo Del Toro.

Released for the PlayStation 4 on 12 August 2014 as a free download on the PlayStation Network, P.T. served primarily as an interactive teaser for the game Silent Hills, a cancelled installment in the Silent Hill series. After the cancellation, Konami removed P.T. from the PlayStation Store and eliminated re-installing the game, a decision that later spawned criticism and fan efforts to allow...

Just recently we saw support for kernel dumping added to VitaDump, and today PlayStation Vita developer St4rk released PKGDecrypt which decrypts and extracts PS Vita Package (PKG) files!

Download: PkgDecrypt-master.zip / GIT / vitakeys (fixed) / vitatool (fixed) / PKG EXTRACTOR AND PKG TO PKGS CONVERTERv2.zip / MakePKGS.bat / PKG Extractor.zip / PKGExtractorGUI.exe / PkgDecrypt-Frontend via @SilicaAndPina

To quote from the README.md:

PkgDecrypt

Decrypts and extracts PS Vita PKG files

Dependencies

OpenSSL

Thanks

Proxima - Helped me with doubts about PKG Crypto

Some related PlayStation Vita hacking scene articles for those interested:

• Oh My Lanta: PS Vita Scene Groups PSiCO & TRSI on Game Dumps
• Vitamin PS Vita Game Backups Playable as VPKs by Team FreeK!...

Last year we saw Linux Running on PS4 from fail0verflow, and this coming December Hector Martin will follow-up with a talk on PlayStation 4 hardware and reverse-engineering at this year's Chaos Communication Congress (CCC) hacking conference which runs from December 27-30th in Hamburg, Germany.

To quote via the 33C3 Scheduling Page (Chaos Communication Congress Schedule 33) from their Events blog:

Last year, we demonstrated Linux running on the PS4 in a lightning talk - presented on the PS4 itself. But how did we do it?

In a departure from previous Console Hacking talks focusing on security, this year we're going to focus on the PS4 hardware, what makes it different from a PC, and how we reverse engineered it enough to get a full-blown Linux distro running on it, complete with 3D acceleration.

Marcan's talk will be held on Day 1 (2016-12-27) at 23:00 so around 5:00 PM (17:00) EST and live streaming will be available at https://streaming.media.ccc.de/ (CCC Events Twitter) and thanks to @raedoob for the news tip in the PSXHAX Shoutbox earlier today!

Hello PSXHAX Members, today PS4 Developer Zecoxao shared a new PlayStation 4 tutorial proceeding his PS4 Version Spoof covering reading and writing to the PS4 process memory using proc_rwmem for those on a 1.76 Firmware console.

Previously, Peek and Poke support was added to PS4Link by PS4 Developer psxdev (Big Boss). This nice addition helps out to Read and Write to the PlayStation 4 process memory using the function "proc_rwmem".

The original credits goes to Wskeu and Wildcard, these individuals did the reading part and writing part of this tutorial you are about to read.

To roughly quote Zecoxao's tutorial: How to read and write to process memory using proc_rwmem

Credits (these go first):

Original authors: wskeu (for the reading part), and wildcard (for the writing part)

Requirements:

• 1.76 console
• elf loader precompiled or extreme-modding's elf loader
• ps4–***
• the payload source
• a brain

Steps:

1. Compile the payload. Specifically to what you want to patch, the size, etc. So, this: