Case Studies of Award-Winning XSS Attacks: Part 2

explain how an attacker uploads a malicious xml file containing a script, stores it on the server, and lures users to visit it to trigger an xss payload.

Explore cross-site scripting via xml in a practical demo, showing how a malicious xml payload attached to a file can trigger an alert for another user in a web app.

Explore how location.href enables a dom-based XSS attack through unsanitized input, demonstrating a browser-dependent exploit in Internet Explorer versus Firefox and a practical payload concept.

Demonstrates an xss via location.href attack, showing how a malicious script exploits a non sanitized page, with url encoding after the hash and browser differences between Firefox and Internet Explorer.

Explore how xss attacks can use vbscript in legacy browsers as an alternative when javascript is blocked, highlighting malicious links and payload encoding.

Explore xss via vbscript in a practical demo, showing how a malicious link can trigger an alert displaying the hosted domain, with the payload ascii encoded for reliability.

Examine how XSS can escalate to remote code execution, illustrated with a VBScript payload and shell object proof of concept, and discuss required conditions in Internet Explorer.

Watch a live demo of escalating from access to remote code execution in a web app, using an XSS payload with ASCII encoding to trigger a shell.

This course's second part showcases nonstandard exercises for discovering award-winning XSS bugs, teaching you to launch attacks via malicious links, VBScript, and location header techniques to earn bug bounty rewards.