FFXE is a CFG recovery tool for Cortex-M based embedded firmware binaries. It was first presented at USENIX 2024 in FFXE: Dynamic Control Flow Graph Recovery for Embedded Firmware Binaries as a way to recover indirect calls to

In this work, we present a portable new dynamic CFG recovery technique based on dynamic forced execution that allows us to resolve indirect branches to registered callback functions, which are dependent on asynchronous changes to volatile memory.

the Forced Firmware Execution Engine (FFXE). • We demonstrate FFXE’s effectiveness at resolving in-direct branches whose targets are dependent on asyn-chronous memory writes (registered callback functions). • We compare our prototype’s performance against several CFG recovery techniques, including a reimplementation

This repository contains the artifacts for the paper FFXE: Dynamic Control Flow Graph Recovery for Embedded Firmware Binaries, which presents a novel technique for resolving indirect branches dependent on asynchronous writes (callback functions) that is …

FFXE: Dynamic Control Flow Graph Recovery for Embedded Firmware Binaries. It contains information on the contents of the artifact repository, the software requirements for usage, as well as instructions for setup and reproduction of experiments.

2025年1月6日 · Our implementation, the Forced Firmware Execution Engine (FFXE), written in Python using the Unicorn emulation framework, is able to identify 100% of known callback functions in our test set of 36 firmware images, something none of the other techniques we tested against were able to do reliably.

2023年12月31日 · FFXE: Dynamic Control Flow Graph Recovery for Embedded Firmware Binaries Ryan Tsang , Asmita , Doreen Joseph , Soheil Salehi , Prasant Mohapatra , Houman Homayoun Published: 01 Jan 2024, Last Modified: 06 Aug 2024 USENIX Security Symposium 2024 Everyone Revisions BibTeX CC BY-SA 4.0

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FFXE is a CFG recovery tool for Cortex-M based embedded firmware binaries. It was first presented at USENIX 2024 in FFXE: Dynamic Control Flow Graph Recovery for Embedded Firmware Binaries as a way to recover indirect calls to asynchronously-registered interrupt handler functions using dynamic forced execution.

2024年10月6日 · FFXE: Dynamic Control Flow Graph Recovery for Embedded Firmware Binaries. USENIX Security Symposium 2024