Amfid Text Relocation Exploit

By creating a dylib without code, just redefining the signed code verification function with a "return ok" method from another signed library and using text relocation, the entire code signing requirement gets circumvented.

In p0sixspwn, the _.dylib redefines these functions:
 * _kMISValidationOptionValidateSignatureOnly (_kCFUserNotificationTokenKey from CoreFoundation)
 * _kMISValidationOptionExpectedHash (_kCFUserNotificationTimeoutKey from CoreFoundation)
 * _MISValidateSignature (_CFEqual from CoreFoundation)

TODO: some more detailed description missing here.

Usage

 * p0sixspwn jailbreak
 * evasi0n7 jailbreak

Credit

 * planetbeing
 * maybe others too