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ExploitFarm Python Library and CLI

ExploitFarm is an advanced tool designed to manage exploits and flag submissions in Attack-Defense CTF competitions. It combines a Python library with a command-line interface (CLI), providing flexibility and efficiency for managing CTF tasks. This documentation provides a comprehensive overview of its features, installation, and usage.

Key Features

  • Multi-Threaded Execution: Utilize a pool of worker threads for efficient exploit execution.

  • Exploit Management: Initialize, push, pull, and version control exploit source code.

  • Attack Groups: Collaborate and manage group-based attacks.

  • Integrated Status Monitoring: View real-time server and current execution statuses.

Installation

Install ExploitFarm via pip:

pip3 install -U xfarm && xfarm --install-completion

For Windows, use:

python -m xfarm

Prerequisites:

  • Python 3.8+
  • Compatible with Linux, macOS, and Windows.
  • Ensure you have pip installed.

Getting Started

ExploitFarm provides both programmatic and CLI access to its features.

Programmatic API

The Python library allows developers to integrate ExploitFarm functionality into their scripts:

import random
from exploitfarm import *

host = get_host()  # Retrieves the server host (from environment variables or configuration)
print(f"Connected to {host}")

flags = [random_str(32) + "=" for _ in range(10)]
print(f"Submitting flags: {flags}")
submit_flags(flags)

Command-Line Interface (CLI)

The CLI is the primary way to interact with ExploitFarm for exploit and attack management.

CLI Syntax

xfarm [COMMAND] [OPTIONS]

Use --help to view available commands and options:

xfarm --help

Detailed CLI Documentation

Global Options

These options are applicable to all commands:

  • -h, --help: Display help information for a command.
  • -I, --no-interactive: Disable interactive configuration mode (default: interactive).
  • -v, --version: Show the version of the ExploitFarm client.

Primary Commands

Start Exploit

Run an exploit from the specified path:

xfarm start [OPTIONS] PATH

Options:

  • PATH: The directory containing the exploit (default: current directory).
  • --pool-size, -p: Fixed size for the thread pool (default: 10 * CPU cores).
  • --submit-pool-timeout: Timeout (in seconds) for the submission pool (default: 3).
  • --test, -t: Test the exploit without submission.
  • --test-timeout: Timeout for exploit testing (default: 30 seconds).
  • --no-auto-push, -n: Prevent automatic source push.
  • --push-message, -m: Custom message for the source push.

Example:

xfarm start ./my_exploit --pool-size 20 --test

Status

Retrieve the status of the server or specific components:

xfarm status [WHAT]

Options:

  • WHAT: Specify the status type (default: status). Available options include:
    • status: General server status.
    • submitters: Submission system details.
    • services: Active services.
    • exploits: Exploit statuses.
    • flags: Flag submission statistics.
    • teams: Team information.
    • clients: Client configuration details.

Example:

xfarm status exploits

Configuration Commands

Edit Configuration

Edit client settings:

xfarm config edit [OPTIONS]

Options:

  • --address: Server address.
  • --port: Server port.
  • --nickname: Client nickname.
  • --https: Use HTTPS (default: False).

Example (no interactive mode):

xfarm -I config edit --address example.com --port 443 --https --nickname

Reset Configuration

Reset all client settings to their default values:

xfarm config reset

Login

Authenticate with the server:

xfarm config login [OPTIONS]

Options:

  • --password: Provide the password directly.
  • --stdin: Read the password from stdin.

Logout

Logout from the server:

xfarm config logout

Exploit Management Commands

Initialize Exploit

Set up a new exploit project:

xfarm exploit init [OPTIONS]

Options:

  • --edit, -e: Edit the configuration interactively.
  • --name: Exploit name.
  • --service: Associated service UUID.
  • --language: Programming language.

Push Exploit

Upload the exploit source code to the server:

xfarm exploit push [OPTIONS]

Options:

  • --message, -m: Commit message.
  • --force, -f: Force push even with an old commit has the same source.

Retrieve Exploit Information

Get details about the exploit source:

xfarm exploit info [OPTIONS]

Options:

  • --raw, -r: Display raw JSON response.

Update Exploit

Update to the latest commit:

xfarm exploit update [OPTIONS]

Options:

  • --force, -f: Force update.

Download Exploit

Download the exploit source:

xfarm exploit download [OPTIONS]

Options:

  • --folder, -f: Specify target folder.
  • --commit-uuid: Commit ID (default: latest).

Attack Group Commands

Create Attack Group

Create a new group for collaborative attacks (and also join in it if in interactive mode):

xfarm group create [OPTIONS]

Options:

  • --name: Group name.
  • --current-commit: Use the current exploit commit.
  • --submit-pool-timeout: Timeout for submission pooling.

Join Attack Group

Join an existing attack group:

xfarm group join [OPTIONS]

Options:

  • --group: Group ID.
  • --queue: Queue number for the group.
  • --trigger-start: Start the attack after joining.

Environment Variables

Environment variables can simplify configuration:

  • XFARM_HOST: Server address.
  • XFARM_PORT: Server port.
  • XFARM_INTERACTIVE: Enable or disable interactive mode.

Best Practices

  1. Use --test to verify exploits before running them in production.
  2. Regularly push changes to the server for version control (they are auto-pushed on attack start anyway).
  3. Collaborate using attack groups for efficient resource utilization if the attack is heavy to execute.

For further assistance, visit the GitHub repository or consult the community resources.