ToothPicker - An In-Process, Coverage-Guided Fuzzer For iOS


ToothPicker is an in-process, coverage-guided fuzzer for iOS. It was developed to specifically target iOS's Bluetooth daemon bluetoothd and to analyze various Bluetooth protocols on iOS. As it is built using FRIDA, it can be adapted to target any platform that runs FRIDA. This repository also includes an over-the-air fuzzer with an exemplary implementation to fuzz Apple's MagicPairing protocol using InternalBlue. Additionally, it contains the the script that can be used to verify crashes the in-process fuzzer has found. In-Process Fuzzer The In-Process Fuzzer works out-of-the-box on various iOS versions (13.3-13.6 tested), but symbols need to be specified. Other iOS versions require adaptions to function addresses. Additionally, it seems like FRIDA's stalker has some problems with the iPhone 8. On newer iPhones that support PAC, the performance significantly suffers from signing pointers. Thus, it is recommended to run this on an iPhone 7. ToothPicker is built on the codebase of....

November 27, 2020
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