GitHub - UBFI/unhook-bof: Remove API hooks from a Beacon process.

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Remove API hooks from a Beacon process.

BSD-3-Clause license

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Name		Name	Last commit message	Last commit date
Latest commit History 6 Commits
src		src
LICENSE		LICENSE
README		README
make.bat		make.bat
unhook.cna		unhook.cna
unhook.x64.o		unhook.x64.o
unhook.x86.o		unhook.x86.o

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This is a Beacon Object File to refresh DLLs and remove their hooks. The code is from Cylance's Universal Unhooking research:

https://blogs.blackberry.com/en/2017/02/universal-unhooking-blinding-security-software

To use:

Load unhook.cna into Cobalt Strike via Cobalt Strike -> Script Manager

Run 'unhook' from Beacon

To build:

x86: Open Visual Studio x86 Native Tools Command Prompt and type 'make'
x64: Open Visual Studio x64 Croos Tools Command Prompt and type 'make'

This project derived from:

Reflective DLL Injection
BSD 3-Clause License
Copyright (c) 2011, Stephen Fewer of Harmony Security (www.harmonysecurity.com)
https://github.com/stephenfewer/ReflectiveDLLInjection

ReflectiveDLLRefresher
BSD 3-Clause License
Copyright (c) 2017, Cylance Inc.
https://github.com/CylanceVulnResearch/ReflectiveDLLRefresher

Unhook Meterpreter Extension
BSD-3-Clause License
2006-2018, Rapid7, Inc.
https://github.com/rapid7/metasploit-payloads/commits/master/c/meterpreter/source/extensions/unhook