Evasi0n



evasi0n is a jailbreak tool that can perform an untethered jailbreak on iOS 6.0-6.1.2 for all supported devices, excluding both Apple TV 3G revisions. It was first released on 4 February 2013 by evad3rs, and is available for Windows, Mac OS X, and Linux (x86 and x86_64). There is also a Cydia package called "evasi0n iOS 6.0-6.1 untether" which can untether an existing tethered jailbreak without the need to restore and use the desktop tool. It is a userland jailbreak.

Supported Devices
As of evasi0n's release, the only unsupported devices are the Apple TV 3G revisions, since the kernels on these devices lack an injection vector to run unsigned code. All other devices running iOS 6.0-6.1.2 are supported (including iOS 5.2 for the Apple TV 2G).

Cydia Package
The Cydia package contains just these files: usr\libexec\dirhelper var\evasi0n\amfi.dylib var\evasi0n\evasi0n

Exploits
evasi0n takes advantage of several vulnerabilities:
 * Symbolic Link Vulnerability
 * Malformed PairRequest (CVE-2013-0979)
 * Shebang Trick
 * AMFID code signing evasion
 * launchd.conf untether
 * IOUSBDeviceFamily Vulnerability (CVE-2013-0981)
 * ARM Exception Vector Info Leak (CVE-2013-0978)
 * dynamic memmove locating
 * vm_map_copy_t corruption for arbitrary memory disclosure
 * kernel memory write via ROP gadget
 * Overlapping Segment Attack (CVE-2013-0977)