n00b81 has posted an awesome article on the forum regarding PSP And PSP Emulator Kernel Vulnerabilities, to view the entire chapter you will have to visit the forum at the link below:
PSP and PSP Emulator Kernel Vulnerabilities – An Overview
Chapter 1 – Introduction
This is chaption #1 out of a (2 or 3..? not sure yet) “chapter” tutorial.
Firstly, I’d like to give a big thanks to fate6 from wololo.net/talk forums. It has been a while now since he did this (considering I’ve postponed this tutorial for a loooong time) but he dumped a TON of PSP firmwares for my inspection in order to assist in the documentation of various kernel vulnerabilities and to formulate a concise timeline regarding when each vuln was introduced in the firmware and when it was patched, etc. I did this because as I progress through this tutorial ‘series’, I will pick various kernel vulnerabilities that have been exploited throughout the years (whether privately or publicly), and will use them as examples of exploitable functions. At the time, my friend was borrowing my only PSP 3000, so I was unable to decrypt and dump the modules myself. So once again – thx man!
Second, I’d like to just clarify what this tutorial series will and won’t be about, to avoid any confusion:
Visit PlayStationHaX Forum To View The Entire Article: PSP and PSP Emulator Kernel Vulnerabilities – An Overview (Chapter 1)