Please note that the Windows edition of iOS Forensic Toolkit does not support checkm8, while the upcoming Linux version will include support for checkm8 extraction. For this to work, you’ll need a copy of Elcomsoft iOS Forensic Toolkit 8 and a macOS computer (Intel or Apple Silicon). ![]() We built a comprehensive solution based on the checkm8 exploit allowing to extract a copy of the file system from affected devices in a safe, forensically sound manner. The pure checkm8 exploit alone is not enough to extract the file system. The same devices running iOS 14 and 15 require passcode removal prior to extraction the same measures may be required when extracting iPads based on the same chip.Ĭheckm8 compatibility matrix (green cells indicate 32-bit devices, blue cells indicate 64-bit devices): In particular, iPhone 8, 8 Plus, and iPhone X devices running iOS 16 utilize SEP hardening measures that make it impossible to access the file system even after successfully applying the exploit if the device had a passcode enabled at any time after setup. While the exploit itself can indeed be applied to a vulnerable device regardless of the OS version, newer versions of iOS largely mitigate its forensic effect, blocking access to the file system on certain combinations of hardware and software. Being a bootloader-level exploit, checkm8 was initially believed to be fully OS-agnostic. The checkm8 exploit is available for a wide range of hardware platforms. Here at ElcomSoft we developed a checkm8-based extraction process that is both repeatable and verifiable. ![]() While the exploit itself does not alter any data on the device’s system or user partitions, its various implementations including the checkmra1n jailbreak that are not as forensically sound as the underlying exploit. In mobile forensics, checkm8 allows for low-level access to the device’s file system, making it a valuable tool for security professionals and researchers. checkm8 plays a significant role in iOS forensics, enabling forensically sound extraction for a wide range of Apple hardware including several generations of iPhones, iPads, Apple Watch, Apple TV, and even HomePod devices. ![]() checkm8, the most famous bootloader exploit, is available for chips that range from the Apple A5 found in the iPhone 4s and several iPad models to A11 Bionic empowering the iPhone 8, 8 Plus, and iPhone X older devices such as the iPhone 4 have other bootloader vulnerabilities that can be exploited to similar effect. Understanding Bootloader Vulnerabilitiesīootloader vulnerabilities exist in several generations of Apple devices. In addition, we’ll provide security professionals and researchers with valuable insight into potential issues and solutions when working with checkm8. In today’s article we’ll discuss the compatibility and features of this exploit with different devices, iOS versions, and platforms. The bootloader vulnerability affecting several generations of Apple devices opens the door to forensically sound extraction.
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