Browser exploit framework
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BeEF (Browser Exploitation Framework) is a penetration testing tool that focuses on exploiting vulnerabilities within the web browser. It works by hooking one or more browsers and using them as entry points to launch attacks against the system from within the browser context. This allows penetration testers to assess the security of a target environment by exploiting client-side vectors rather than just focusing on the network perimeter or hardened systems. BeEF gathers information about hooked browsers and systems, performs network discovery, and has command modules for social engineering, exploits, and maintaining persistence within the browser.
Browser exploit framework
- 2. What is BeEF? BeEF is short for The Browser Exploitation Framework. It is a penetration testing tool that focuses on the web browser. Amid growing concerns about web-borne attacks against clients, including mobile clients, BeEF allows the professional penetration tester to assess the actual security posture of a target environment by using client-side attack vectors. Unlike other security frameworks, BeEF looks past the hardened network perimeter and client system, and examines exploitability within the context of the one open door: the web browser. BeEF will hook one or more web browsers and use them as beachheads for launching directed command modules and further attacks against the system from within the browser context.
- 3. How it works
- 4. UI Overview
- 5. Information Gathering Network Discovery Social Engineering Exploit Persistence Command Modules
- 6. Information Gathering Network Discovery Social Engineering Exploit Persistence Browser Fingerprinting Detect Plugins (Quicktime/VLC/Silverlight) Host Fingerprinting Detect logged in sessions Command Modules
- 7. Information Gathering Network Discovery Social Engineering Exploit Persistence Internal IP Address Ping Sweep DNS Enumeration Port Scanning Network Fingerprinting NAT Pinning Command Modules
- 8. Information Gathering Network Discovery Social Engineering Exploit Persistence Prompt Fake Login Page Redirect Embed iFrames Fake flash/browser Updates Flash camera & Mic permission Click jacking assist Command Modules
- 9. Information Gathering Network Discovery Social Engineering Exploit Persistence Several Device specific CSRF modules Command Modules
- 10. Information Gathering Network Discovery Social Engineering Exploit Persistence Foreground iframe Popup Under Man in the browser Command Modules
- 11. Metasploit Integration • Start msgrpc on metasploit • Enable metasploit in config.yaml • Configure BeEF with msgrpc username and pwd in extensions/metasploit/config.yaml • Start beef
- 12. Tunnelling Proxy • Doesn’t work like it used to thanks to same origin policy of browsers • Make request in the context of the hooked browser.
- 13. BeEF API Example • Authenticate • List hooked browsers • Make persistent (popup under) • Determine the type of browser • if browser.match(/^IE/) { add iframe with URL for Metasploit module ms10_046_shortcut_icon_dllloader} Else {execute a different module}