Websockets Request Smuggling — TryHackMe Walkthrough

🔥 Learn how attackers smuggle HTTP requests through proxies using WebSocket vulnerabilities in this in-depth TryHackMe walkthrough! I'll show you advanced request smuggling techniques and how to exploit misconfigured proxies. In this comprehensive guide to WebSocket Request Smuggling, you'll learn: How WebSockets work and the upgrade handshake process Why proxies become vulnerable during WebSocket upgrades How to exploit proxies that don't validate upgrade responses Techniques for smuggling HTTP requests through WebSocket tunnels How to bypass frontend proxy restrictions using invalid WebSocket versions Advanced exploitation using SSRF to fake WebSocket upgrades Defeating secure proxies with 101 response injection Practical demonstrations with Burp Suite and hands-on labs ⏱️ Timestamps 00:00 Introduction 00:41 What is WebSockets? 02:58 Abusing Websockets for Request Smuggling 13:14 Defeating Secure Proxies 21:34 Conclusion 🔗 Resources & Further Reading TryHackMe Room: Request Smuggling WebSockets OWASP HTTP Request Smuggling Guide: https://owasp.org/www-community/attac... Full Web App Pentesting Playlist:    • TryHackMe - Web App Pentesting   🛠️ Tools Used Burp Suite Python HTTP Server Netcat TryHackMe Lab Environment 💡 Key Takeaways This vulnerability demonstrates why proper validation of protocol upgrades is critical in proxy configurations. Even modern proxies like Nginx can be vulnerable if they don't correctly handle edge cases in WebSocket handshakes. Don't forget to LIKE this video, SUBSCRIBE for weekly cybersecurity tutorials, and COMMENT with your questions or what TryHackMe room you'd like me to cover next! #WebSockets #RequestSmuggling #WebAppPenTesting #TryHackMe #EthicalHacking #BurpSuite #Cybersecurity #InfoSec