Web Shell Upload via Obfuscated File Extension | Web Security Academy Walkthrough скачать в хорошем качестве

Web Shell Upload via Obfuscated File Extension | Web Security Academy Walkthrough

In this video, I demonstrate a web shell upload exploit by bypassing an extension blacklist using a null byte injection technique. This lab from PortSwigger's Web Security Academy highlights a fundamental flaw in file upload validation, where certain blacklisting mechanisms can be bypassed with obfuscation tricks. 🔍 Steps Covered: ✅ Uploading an image to analyze request structure ✅ Identifying the upload endpoint and its restrictions using Burp Suite ✅ Using URL-encoded null bytes (%00.jpg) to bypass file extension filtering ✅ Uploading a PHP web shell with an obfuscated filename ✅ Executing the web shell to extract Carlos's secret file ⚡ This method exploits poor file validation logic, emphasizing why MIME-type checks and strong whitelisting are critical for secure file uploads. 🔴 Subscribe for more cybersecurity tutorials! 💬 Got questions? Drop them in the comments! #cybersecurity #ethicalhacking #websecurity #WebShell #FileUploadBypass #BugBounty #TryHackMe #PortSwigger #securityresearch #pentesting #BurpSuite #WebExploitation #hackthebox #CTF #RedTeam #HackingTutorial #InfoSec #PenetrationTesting #cyberattack #ethicalhacker