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PSJailBreak Reverse Engineered, Requires Hardware to Update


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217w 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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Maniac2k's Avatar
#43 - Maniac2k - 217w ago
If the information are correct the dongle should be easily clone able. The AtMega used in the original JB should be an Atmega16 or Atmega32 since those two are available in a TQFP-44 socket.

For our own JB maybe the smaller Atmega8 could be enough too. An open USB implementation for the Atmega series exists on the internet. With a full log of communication (including timestamps) between PSJB and Ps3 i could program the firmware for the Atmega.

thetom777's Avatar
#42 - thetom777 - 217w ago
Quote Originally Posted by PS3 News View Post
Here are some raw dumps of output data from the dongle courtesy of FiDilllo also.


any chance of getting the full dump?

shadowi's Avatar
#41 - shadowi - 217w ago
Quote Originally Posted by PS3 News View Post
Here are some raw dumps of output data from the dongle courtesy of FiDilllo also.


It come from lv0lv1lv2 dump

joysei's Avatar
#40 - joysei - 217w ago
"PSJailbreak emulates mainly an 6 Port USB-Hub, where in a special order, different USB-Devices gets connected and disconnected (emulated!). One of these devices has the id from the sony jig."

Interesting... what is the 6 devices ID? is it the order or ID was repeatable?

PS3 News's Avatar
#39 - PS3 News - 217w ago
Here are some raw dumps of output data from the dongle courtesy of FiDilllo also.

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