GOSTRINGUNGARBLER

Summary from the TLDR InfoSec newsletter

Mandiant released GoStringUngarbler, a Python tool that deobfuscates strings in Go binaries protected by garble's literal transformation flag, supporting Windows PE and Linux ELF executables compiled with Garble v0.11.0-v0.13.0 and Go v1.21-v1.23. The tool identifies decrypting subroutines via regex pattern matching, emulates them using the Unicorn emulator to extract plaintext strings, and patches the binary by replacing obfuscation routines with stubs that directly reference the decrypted content. Security analysts can use this to accelerate malware analysis of garble-obfuscated Go samples, though it only works when garble's "-literals" flag was used during compilation.