Abstract

With the introduction of new mitigations in iOS 15 (and especially 15.2), creating a jailbreak became significantly more difficult. Before, a kernel vulnerability was enough for jailbreaking but now a PAC or PPL bypass is required as well.

In my talk I will explain the inner workings of Fugu15 and especially how the kernel exploit, PAC and PPL bypass work in detail. Additionally, I will also describe some of the new mitigations introduced in iOS 15.2, how they affect jailbreaking and what Fugu15 does to bypass them.