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portbuster1337/arachnec2

15GoAudience · researcherComplexity · 4/5LicenseSetup · hard

TLDR

Arachne C2 is a Go-based command-and-control framework for authorized red-team testing that routes implant communications over a decentralized peer-to-peer network (IPFS/DHT) instead of a fixed server, making traffic harder to block or attribute.

Mindmap

mindmap
  root((repo))
    Operator Console
      CLI implant listing
      Shell commands
      File transfer
      Port forwarding
    Implant Features
      Ed25519 encryption
      Unique keypairs
      PTY shell sessions
      Cover traffic
    Build Options
      Code obfuscation
      Binary compression
      VM detection
      Cross-compilation
    P2P Network
      IPFS transport
      DHT discovery
      No fixed server
    Platforms
      Linux
      macOS
      Windows
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Things people build with this

USE CASE 1

Run authorized penetration tests where a resilient, censorship-resistant C2 channel is needed to simulate advanced threat actors.

USE CASE 2

Practice red-team tradecraft in a lab environment, experimenting with obfuscated implants and evasion techniques against defensive tooling.

USE CASE 3

Research peer-to-peer C2 architectures and study how decentralized networks can be used for covert communications in security exercises.

USE CASE 4

Evaluate blue-team detection capabilities against beaconing implants that generate cover traffic and hide behind IPFS network activity.

Tech stack

GoIPFSlibp2pEd25519DHTPTYConPTY

Getting it running

Difficulty · hard Time to first run · 1h+

Requires Go toolchain to compile operator and cross-compile implants. IPFS/libp2p networking must be reachable from both operator and target. Use only on systems you own or have explicit written authorization to test.

GPLv3, free to use, modify, and share, but any distributed modifications must also be released under GPLv3.

In plain English

Arachne C2 is a command-and-control framework written in Go for red-team security testing. A command-and-control framework is a tool that security professionals use during authorized penetration tests to remotely manage software agents (called implants) installed on target machines. Arachne's distinguishing feature is that it uses a decentralized peer-to-peer network rather than a traditional central server. Instead of a fixed server IP or domain that could be blocked or taken down, Arachne routes communications through the same peer-to-peer network that powers IPFS, a distributed file system. The implants and the operator's console are all treated as equal peers in that network, discovered via a distributed hash table. Messages are encrypted and signed with Ed25519 keys, so implants will only accept commands from the operator who built them. Each implant has a unique keypair embedded at build time, giving it a persistent identity across restarts. The operator console is a command-line interface that lists connected implants and lets you select one to work with. Available commands include running arbitrary shell commands, listing files and processes, changing directories, opening an interactive shell session, forwarding local ports through the implant, and uploading or downloading files. The interactive shell uses a proper terminal session (PTY) on Linux and macOS, and a hidden ConPTY session on Windows. Implants are compiled from a single operator binary that embeds the implant source and can cross-compile for Linux, macOS, and Windows. Build options include code obfuscation (which strips function names, package paths, and string literals), binary compression, a quiet mode that hides the process on the target, and a VM detection mode that runs over 65 detection techniques and exits cleanly if the binary appears to be running inside a virtual machine analysis environment. Cover traffic is also generated to obscure the regular beacon timing from network observers. The project is inspired by Sliver, another open-source red-team framework. It is licensed under GPLv3.

Copy-paste prompts

Prompt 1
I am conducting an authorized penetration test. Using Arachne C2 as context, explain how its IPFS-based peer-to-peer transport differs from traditional C2 server infrastructure and what that means for network defenders trying to detect or block it.
Prompt 2
I have permission to test my organization's endpoint detection. Walk me through how Arachne's VM detection techniques work and how a blue team could write detection rules to identify a process that exits cleanly when it spots a sandbox.
Prompt 3
For an authorized red-team engagement, how would I use Arachne C2's build flags to compile an obfuscated, compressed implant for a Windows target, and what does each flag actually do to the binary?
Prompt 4
I'm studying C2 frameworks for a security research paper. Compare Arachne C2's Ed25519 keypair-per-implant identity model to how traditional C2 frameworks authenticate implants, and explain the security trade-offs.
Prompt 5
During an authorized lab exercise, I want to test port forwarding through an Arachne implant. Explain how the port-forward command works conceptually and what kind of lateral movement scenario it is designed to simulate.
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