QUOTE(ItchyB @ Jan 29 2006, 03:34 AM)
A quick explanation on xbox hacks.
An unmodded xbox boots from a BIOS, this bios is coded in such away that it will only load if the HDD is locked and will only allow the running of "signed code", that is software that M$ have signed with an ultra secure key, there are also checks on media used. All these systems were put in place by MS to prevent the xbox being used for any other purpose than what they desired.
The original BIOS was hacked to remove the security features and over time was modified to allow unsigned code to run, larger HDD's to be used and other things to be changed. The new Hacked BIOS was loaded on a chip that was used in place of the original. With the hacked bios the xbox became capable of running unsigned code and a number of applications where developed, things like alternate dash boards, Xbox media centre, game backup apps and much more. On version 1.0-1.5 boxes you could also flash the on board chip (TSOP) and bypass the need for a 3rd party chip.
Software vunerabilities were also found, a font exploit and audio exploit that take advantage of buffer overflows to enable unsigned code to be run, these are installed by using a game save exploits found in a number of games including 007 agent under fire and mech assult. Softmodding is now very advanced and can do everything a hardmod can with very few disadvantages.
This is a very simplified explanation and I stand to be corrected on any point, this information has been gathered from various sources with in this forum and I would like to thank all the guys in the scene who have made the whole scene possible.
Wow, thank you so much for taking the time to do that man! I will definitely use something like that for my intoductory stuff, and add more information by building off of the model that you provided. With your permission, of course.
Thanks again. And thank you even more if it's okay if I use this for my little guide for my computer club.