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December 26, 2009 // 7:22 pm - This weekend GeoHot, the hacker responsible for several Apple iPhone hacks, has returned to Sony PS3 hacking after his initial announcement a few months back and has opened a PS3 hacks blog (linked above).

He recently made this Tweet:

"I just pulled everything from the USB bus... the Cell processor SPI bus, PS3 is going down :-)"

These are the latest posts on his new PS3 hacks blog:

Cell SPI

The Cell processor has an SPI port which is used to configure the chip on startup. Well documented here. It also allows hypervisor level MMIO registers to be accessed. In the PS3, the south bridge sets up the cell, and the traces connecting them are on the bottom layer of the board. Cut them and stick an FPGA between.

Quick theoretical attack. Set an SPU's user memory region to overlap with the current HTAB. Change the HTAB to allow read/write to the hypervisor! If that works it's full compromise of the PPU.

A Real Challenge

The PS3 has been on the market for over three years now, and it is yet to be hacked. It's time for that to change.

I spent three weeks in Boston working software only, but now I'm home and have hardware. My end goal is to enable unsigned code execution, making every unit into a test and opening up a third party development community, either through software or hardware (with a mod chip). The PS3 is a prime example of how security should be done, very open docs wise, and the thing even runs Linux. But it isn't unbreakable :-)

GeoHot Resumes Sony PS3 Hacking, Opens PS3 Hacks Blog

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#2 - ModderFokker - December 26, 2009 // 7:28 pm
ModderFokker's Avatar
Hope it works somehow.

Wanted to stream a movie a couple of minutes back but no audio came out of the system.

#1 - PS4 News - December 26, 2009 // 7:25 pm
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A bunch of people submitted this news hehe, +Rep for the post semitope and also if urbanracer34 replies here I will +Rep you too as your submission was nice but I could only pick one to approve.