PowerShell Empire Server

A Model Context Protocol (MCP) server for interacting with PowerShell Empire, the post-exploitation framework maintained by BC-Security.

Note: This tool is intended for authorized security testing, red team operations, and educational purposes only. Ensure you have proper authorization before using this tool against any systems.

Features

This MCP server provides comprehensive access to Empire's REST API (v5+), enabling AI assistants to:

• Listener Management: Create, list, enable/disable, and delete listeners
• Stager Generation: Generate payloads using various templates (PowerShell, Python, C#, etc.)
• Agent Control: List agents, execute commands, upload/download files
• Module Execution: Search and run post-exploitation modules
• Credential Management: View and store harvested credentials
• Plugin System: Execute Empire plugins
• C2 Profiles: Access malleable C2 profiles for HTTP/S listeners

Installation

# Clone the repository
git clone https://github.com/schwarztim/sec-powershell-empire-mcp.git
cd sec-powershell-empire-mcp

# Install dependencies
npm install

# Build
npm run build

Configuration

Set the following environment variables:

Variable	Description	Default
EMPIRE_URL	Empire REST API URL	http://localhost:1337
EMPIRE_USERNAME	Empire username	empireadmin
EMPIRE_PASSWORD	Empire password	password123

Claude Desktop Configuration

Add to your Claude Desktop configuration (~/.claude/user-mcps.json or Claude Desktop settings):

{
  "mcpServers": {
    "powershell-empire": {
      "command": "node",
      "args": ["/path/to/sec-powershell-empire-mcp/dist/index.js"],
      "env": {
        "EMPIRE_URL": "https://your-empire-server:1337",
        "EMPIRE_USERNAME": "your-username",
        "EMPIRE_PASSWORD": "your-password"
      }
    }
  }
}

Available Tools

empire_listeners

Manage Empire listeners - list, create, enable, disable, or delete listeners.

Actions: list, get, templates, create, delete, enable, disable

empire_stagers

Generate and manage stagers/payloads for Empire agents.

Actions: list, templates, create, get, delete

empire_agents

List and manage active Empire agents.

Actions: list, get, kill, rename, checkins, files, tasks

empire_modules

Search and view Empire post-exploitation modules.

Actions: list, search, get, execute

empire_shell

Execute shell commands on an Empire agent.

empire_upload

Upload a file to an Empire agent.

empire_download

Download a file from an Empire agent.

empire_credentials

Manage harvested credentials in Empire.

Actions: list, create

empire_hosts

List hosts that agents are running on.

empire_downloads

List files downloaded from agents.

Actions: list, get

empire_plugins

Manage Empire plugins.

Actions: list, execute

empire_bypasses

List available AMSI/AV bypasses.

empire_profiles

List malleable C2 profiles for HTTP listeners.

empire_task_result

Get the result of a specific task.

Usage Examples

List Active Agents

Use empire_agents with action "list" to see all active agents.

Execute a Shell Command

Use empire_shell with agent_id "ABC123" and command "whoami" to run a command on an agent.

Generate a PowerShell Stager

Use empire_stagers with action "create", template "multi_launcher", name "test_stager",
and options including the Listener name.

Search for Modules

Use empire_modules with action "search" and search term "mimikatz" to find credential dumping modules.

Requirements

• Node.js 18+
• PowerShell Empire v5+ (BC-Security fork)
• Empire REST API enabled

Security Considerations

• Store credentials securely; avoid hardcoding in configurations
• Use HTTPS for Empire API connections in production
• Limit API access to authorized networks only
• Follow your organization's security policies for red team tools

License

MIT License - see LICENSE file.

Disclaimer

This software is provided for authorized security testing and educational purposes only. Users are responsible for ensuring compliance with applicable laws and regulations. The authors assume no liability for misuse of this software.

References

• PowerShell Empire
• Empire REST API Documentation
• Model Context Protocol