Stefan Esser, better known as ion1c in the jailbreak scene or else the hacker to whom we owe the iOS 4.3.1 untethered jailbreak, made a stunning presentation on the technical exploitation of loopholes in iOS Kernel at the recent BlackHat USA 2011.
Many times we have all posed “why it take time to iPhone hackers to create a jailbreak? Maybe I can create it myself. ” The answer for most of us is NO, creating a jailbreak, and especially a bootrom level jailbreak is very difficult, and i0n1c shows us in his presentation. Most of us will not understand almost anything, some computer geeks may understand enough to appreciate the difficulty of the process. The .pdf presentation (97 pages) is available here.