AlphaGolang - IDApython Scripts For Analyzing Golang Binaries

4 months ago 29

IDApython Scripts for Analyzing Golang Binaries (1)

AlphaGolang is a collection of IDAPython scripts to help malware reverse engineers master Go binaries. The idea is to break the scripts into concrete steps, thus avoiding brittle monolithic scripts, and mimicking the methodology an analyst might follow when tackling a Go binary.

Scripts are released under GPL license (honoring Tim Strazzere's original GolangLoaderAssist which we refactored and updated for python3, props to Tim :) ). Contributions are welcome and encouraged!

Requirements: IDA Pro (ideally v7.6+) and Python3 (ew) The first two steps (recreate_pclntab and function_discovery_and_renaming) will work on IDA v7.5- but scripts beyond that require IDAv7.6+. Newer versions are the ideal target for newer scripts going forward.

Original Reference: Mandiant Cyber Defense Summit 2021 talk (Video Pending)

Pending fixes and room for contributions:

fix_string_cast.py - Still needs refactoring + better string load heuristics extract_types.py - Only works on PE files currently and looks for the hardcoded .rdata section - A proper check / implementation for varint-encoded sizes is needed

Next steps:

Track strings references by user-generated functions Auto generate YARA signatures based on user-generated functions Generate hex-rays pseudocode output for user-generated functions Automatically set breakpoints for dynamic analysis of arguments ???

Credit to:

Tim Strazzere for releasing the original golang_loader_assist Milan Bohacek (Avast Software s.r.o.) for his invaluable help figuring out the idatree API. Joakim Kennedy (Intezer) Ivan Kwiatkowski (Kaspersky GReAT) for step 5. Igor Kuznetsov (Kaspersky GReAT)

AlphaGolang - IDApython Scripts For Analyzing Golang Binaries AlphaGolang - IDApython Scripts For Analyzing Golang Binaries Reviewed by Zion3R on 5:30 PM Rating: 5

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