Explore the intricacies of hacking the Jolla mobile device in this comprehensive conference talk from Circle City Con 2015. Delve into the history of Nokia and learn about smart back covers before examining the attack surface and device topology. Investigate partitions, boot images, and image signing processes. Discover recovery fastboot methods and troubleshoot security codes. Analyze the boot process, HMAC, and various locks. Explore the operating system, application layer, and local attack surface. Examine SIM Kit and SD card vulnerabilities through path fuzzing and init script manipulation. Investigate kernel security, dbus sniffing, and user interaction. Learn about importing contacts, third-party apps, and platform proxies. Gain insights into hardware components like NFC tags and the developer kit. Master the art of assessing mobile device security through practical examples and lessons learned.