C2 Communication Protocol Library

C2 Comms Library — Multi-Protocol

Reusable library that implements canales of communication Command & Control on multiple protocols:

• HTTPS Channel — Communication over HTTPS with domain fronting support. Mensajes embeddeds in headers and body of requests legitimates.
• DNS Channel — Exfilterstion and commands via DNS TXT/CNAME queries. Fragmentation automatic of data grandes in multiple queries.
• ICMP Channel — Datos embeddeds in the payload of packages ICMP echo request/reply. Requiere raw sockets (root/admin).
• Protocolo base — Capa of serialization with AES-256-GCM, message authentication, sequence numbers anti-replay.
• Jitter and beaconing — Intervalos configuresble with variation aleatoria to avoid detection by patterns temporales.
• API limpia — send(data), receive(), register(), heartbeat(). Misma interface independiente of the canal of transporte.

Lenguajes: Python 3.8+ (implant/handler) and C (implant lightweight for targets without Python).