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KHAØS C2

KHAØS is a modern post-exploitation C2 framework with 5 covert channels and full evasion built in, created by @28Zaaky.

See the documentation for full instructions.

Why KHAØS

Most open-source C2s have one thing in common: they're already in every EDR vendor's database. KHAØS was built with that in mind from day one.

The agent is written in C. It uses indirect syscalls, unhooks ntdll from a fresh disk copy, patches ETW and AMSI through hardware breakpoints rather than byte-patching, and obfuscates its stack during sleep. Every build regenerates its string encoding key and credential XOR, so two compiled binaries from the same config never share a static signature.

On the network side there are five channels: Microsoft Teams, GitHub Gist, DNS-over-HTTPS, HTTP/S, and SMB named pipe. The idea is that at least one of them already looks like normal traffic in whatever environment you're working in.

Post-exploitation covers the usual ground: shell, execute-assembly (.NET CLR in-process), BOF/COFF loading, four injection techniques, token theft and impersonation, LSASS dump via direct syscall, Kerberoasting, AS-REP roasting, SOCKS5, reverse port forward, and WMI lateral movement. A separate crypter/loader handles in-memory PE mapping if you need to go stageless.

The operator UI is a React app with a built-in payload builder, live network map, credential store, and screenshot gallery. Everything updates over WebSocket in real time.

Features

Channels

Channel	Transport	Blends into
Microsoft Teams	HTTPS `*.office.com`	O365 enterprise traffic
GitHub Gist	REST `api.github.com`	Developer activity
DNS-over-HTTPS	DoH `1.1.1.1`	Encrypted DNS queries
HTTP/S	HTTPS	Generic web traffic
SMB Named Pipe	SMB	Internal lateral movement

Traffic is encrypted with ChaCha20-Poly1305, key exchange via X25519, unique per agent, per session.

Post-exploitation

Category	Capabilities
Execution	Shell, execute-assembly (.NET CLR in-process), BOF/COFF loader, screenshot
Injection	Remote thread, thread hijack, EarlyBird APC, module stomp, self-injection
Identity	Token steal / make / revert, `getsystem` (3 techniques), UAC bypass (ICMLuaUtil / fodhelper / sdclt)
Credentials	LSASS dump (custom minidump), SAM/SYSTEM hive via SeBackupPrivilege, Kerberoast, AS-REP roast
Network	SOCKS5 proxy, reverse port forward, SMB pivot, WMI lateral movement
Persistence	Registry run key, scheduled task (XML)

Crypter

Loader that decrypts and reflectively maps the agent PE in memory.

cd crypter
python build.py                            # bake agent + build loader
python build.py --stager-url https://...   # with network stager

Quick Start

Linux (Kali / Ubuntu / Debian)

git clone https://github.com/28Zaaky/khaos-c2
cd khaos-c2
python3 -m venv venv && source venv/bin/activate
pip3 install -r server/requirements.txt

# install Node.js if missing
sudo apt update && sudo apt install nodejs npm -y
cd ui && npm install && npm run build && cd ..

# TLS cert
openssl req -x509 -newkey rsa:2048 -sha256 -days 365 -nodes \
    -keyout server/cert.key -out server/cert.pem -subj "/CN=khaos-c2"

cp server/config.example.yaml server/config.yaml
# edit config.yaml: jwt_secret + http.beacon_url
python3 server/main.py

Agent compiled on Windows (see below), then dropped on target.

Windows

Requires MSYS2 with MinGW-w64.

git clone https://github.com/28Zaaky/khaos-c2
cd khaos-c2

# MSYS2 shell — install build deps once
pacman -S mingw-w64-x86_64-gcc mingw-w64-x86_64-mbedtls

# Server
cd server
python -m venv venv
venv\Scripts\activate
pip install -r requirements.txt
copy config.example.yaml config.yaml
python main.py

# UI (separate terminal)
cd ui && npm install && npm run dev   # → http://localhost:5173

# Agent
.\agent\rebuild_agent.ps1        # runs make config + make lean, kills running agent first
# or: cd agent && make config && make standalone

Default login: operator / changeme

Community

Discord: https://discord.gg/qNeK6cvwSq

Legal

For authorized security testing only. Using this tool against systems you do not own or have explicit written permission to test is illegal.

Built by 28Zaaky

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