Geosn0w releases OsirisJailbreak12, an incomplete ‘developer-only’ “jailbreak” PoC for iOS 12.0-12.1.2

Wednesday saw two separate jailbreak tools (Electra and unc0ver) pick up support for iOS 11.4.x, so one might be inclined to say that it’s been a decent day for the jailbreak community. But wait… there’s more!

Wednesday evening, hacker and software tinkerer @Geosn0w announced the release of an incomplete ‘developer-only jailbreak’ for iOS 12.0-12.1.2 dubbed OsirisJailbreak12. The work was made possible by the tfp0 exploit that was just recently unleashed by security researcher Brandon Azad:

To be perfectly clear, this work isn’t intended for the general public, and it will not install Cydia when deployed. It’s only intended for developers for testing purposes. A brief description published on the tool’s official GitHub page describes what it is and what it does:

iOS 12.0 -> 12.1.2 Incomplete Jailbreak with CVE-2019-6225.

An incomplete iOS 12 Jailbreak. For now, it only runs the exploit, gets tfp0, gets ROOT, escapes the SandBox, writes a test file to prove the sandbox was escaped then resprings. Feel free to build on top of it as long as you respect the GPLv3 license.

4K devices are not supported for now. A12 and other 16K devices are.

Notably, OsirisJailbreak12 lacks a remount and a CoreTrust bypass, which means it’s effectively useless to the general public; it’s mostly just a proof of concept and resprings the device after writing a test file to prove that the exploit worked. On the other hand, Geosn0w welcomes daring developers to take advantage of the base tool and build from it as they see fit, so long as they respect the accompanying copyright license.

In case you’re unfamiliar with the terminology in the last bit of the description above, 4K devices = A[7/8](X) devices and 16K devices = A[9/10/11](X) devices. This should give you a better idea of which devices are supported.

If you’re on iOS 12 and still waiting for a jailbreak, then continue waiting. A full-featured iOS 12 jailbreak isn’t yet available to the public, but we’ll happily keep you in the loop when that changes.

How excited are you for an iOS 12 jailbreak to surface? Let us know in the comments section below.