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PSJailBreak Reverse Engineered, Requires Hardware to Update

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225w ago - A few days ago PSJailBreak Reverse-Engineering work began, and today German site GamerFreax.de (linked above) has posted a breakdown of the PSJailBreak, how it was reverse engineered and notes that it requires additional hardware to update.

Below is the rough translation of the PS JailBreak reverse-engineering details, to quote:

"We have the PSJailbreak dongle yet again brought out of retirement to put it more precisely Herbs to take a closer look. We tell you here in brief the main steps of the internal process of PSJailbreak.

We can confirm that it can not confirm that PSJailbreak a clone of Sony's "Jig" is module. PSJailbrak is an exploit honest self-developed. The chip is not but a PIC18F444 ATMega with software USB.

This means the chip is internally capable of USB to emulate. PSJailbreak mainly be emulated 6Port a USB hub connected to a specific end USB devices and then disconnected. One of these devices has the ID of Sony's "Jig" module, which means that played in the development of PSJailbreaks the "Jig" module, a certain role.

But let's start at the front: When the PS3 is clamped in the USB emulation device, which has a much too big Configuration Descriptor. This Descriptor ├╝berschriebt the stack with a PowerPC contained code that is executed. Now, various USB devices are connected in the emulation. A device has a large 0xAD Descriptor, which is part of the exploit and contains static data.

A short time later (we are moving here in Milisekundenbereich) the jig module is connected, and encrypted data are transmitted to the module jig. A (in Milisekundenbereich) eternity later, the answers Jig 64Byte module with static data, all USB devices are disconnected, a new USB device is connected and the PS3 launches with a new look.

64Byte static data that is emulated by the PS3 64Byte Jig sent to the static data that is emulated by Jig sent to the PS3

Extract from the USB stream Extract from the USB stream (pictured below).

Incidentally PSJailbreak is NOT updateable. The Update feature can be mentioned, if realized at all, only with additional hardware."

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Comments 73 Comments - Go to Forum Thread »

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#33 - donnyboy1189 - 225w ago
donnyboy1189's Avatar
once devs have a look at all the requirments to create a cloned dongle, would there be no way emulate the same process on a pc, and set up our own jig e.g usb to usb no dongle required??

#32 - atlask2 - 225w ago
atlask2's Avatar
A great find will be to inject pjb code in a signed pkg. Clones are coming , just wait a month..

#31 - xUb3rn00dlEx - 225w ago
xUb3rn00dlEx's Avatar
Can any devs care to elaborate the difficulty of re-creating the dongle with the recognized parts? Instead of dishing out the insane price tag, how easy/ expensive would it be just to DIY your own little dongle, load up the software (once that is freely available) and bada bing you have your exploit?

#30 - whinis - 225w ago
whinis's Avatar
Quote Originally Posted by tjay17 View Post
If it is not update-able how will it work with future games?

The stick is just a accesser, the backload will still be updatable.

#29 - tjay17 - 225w ago
tjay17's Avatar
If it is not updatable how will it work with future games?


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