Apple is known for a very long time they support their devices. On January 23, 2023, alongside with iOS 16.3 the company rolled out security patches to older devices, releasing iOS 12.5.7, iOS 15.7.3 and iPadOS 15.7.3. iOS 12 was the last major version of iOS supported on Apple A7, A8, and A8X devices, which includes the iPhone 5s and iPhone 6 and 6 Plus generations along with several iPad models. We tested low-level extraction with these security-patched builds, and made several discoveries.

The updated iOS Forensic Toolkit 8.11 brings keychain decryption support to devices running iOS/iPadOS versions up to and including the 15.5 by using the extraction agent. The tool supports recent models that can run iOS 15 , which includes devices based on the Apple A12 through A15 Bionic, as well as Apple Silicon based devices built on the M1 SoC.

There are several methods for recovering the original password ranging from brute force to very complex rule-based attacks. Brute-force attacks are a last resort when all other options are exhausted. What can you reasonably expect of a brute-force attack, what is the chance of success, and how does it depend on the password and the data? Or just “how long will it take you to break it”? Let’s try to find out.