flare-emu

by mandiant

893stars

134forks

35watchers

Updated 5 months ago

About

flare-emu is a flexible binary emulation framework that integrates with IDA Pro or Radare2 and Unicorn to enable scripted emulation for advanced code analysis across multiple architectures.

No description available.

Primary Use Case

flare-emu is primarily used by reverse engineers and malware analysts to emulate and analyze binary code within supported architectures like x86 and ARM, facilitating detailed dynamic analysis and exploration of code paths. It is especially useful for handling obfuscated binaries, shellcode, or complex functions where static analysis alone is insufficient.

Key Features

Supports emulation of x86, x86_64, ARM, and ARM64 architectures
Provides multiple APIs for emulating instruction ranges, specific code paths, and arbitrary byte blobs
Integrates with IDA Pro and Radare2 for seamless binary analysis and dynamic code discovery
Allows user-defined hooks for instructions and function calls during emulation
Enables forced emulation down specific branches or all paths within functions
Supports emulation of shellcode and manipulation of CPU registers not exposed by Unicorn
Returns Unicorn emulation objects for direct memory and register probing
Includes utility functions for reading and writing emulated memory and registers

Installation

Drop flare_emu.py and flare_emu_ida.py into your IDA Pro environment

Usage

>_ emulateRange

Emulate a range of instructions or a function with options for hooks and control over function calls.

>_ emulateSelection

Wrapper for emulateRange to emulate the currently highlighted instructions in IDA Pro.

>_ iterate

Force emulation down specific branches to reach target addresses or functions with callback support.

>_ iterateAllPaths

Emulate all possible paths through a target function to cover every basic block.

>_ emulateBytes

Emulate a blob of shellcode or arbitrary bytes without adding them to the IDB.

>_ emulateFrom

Emulate from a given start address until no instructions remain or stopped by hooks, supporting dynamic code discovery.

Security Frameworks

Reconnaissance

Execution

Defense Evasion

Discovery

Collection

Usage Insights

Integrate flare-emu with automated malware sandboxing to enhance dynamic analysis capabilities.
Use flare-emu hooks to simulate evasive malware behaviors for blue team training scenarios.
Leverage the iterateAllPaths API to uncover hidden code paths during threat hunting exercises.
Combine flare-emu with CI/CD pipelines to detect malicious code injections early in the software development lifecycle.
Develop custom emulation scripts to automate reverse engineering workflows and reduce manual analyst effort.