Advanced Web Exploitation
Foundational web challenges hide flags in cookies and single injections. Advanced ones make you chain bugs: stored XSS that steals an admin bot's session, SSRF that pivots to an internal service, XXE that reads server files, and WebAssembly you have to decompile. This path assumes you are fluent with dev tools, cookies, and basic SQL and SSTI injection.
- Step 01
Advanced Injection and Filter Bypass
Real injection rarely works on the first payload because input is filtered. ORDER ORDER hides the flag behind a UNION SELECT that only fires when a report is generated, and msfroggenerator2 wraps a server-side injection in stricter sanitization you have to bypass before you can execute commands.
- Step 02
Exploiting Admin Bots
Many web challenges run a headless browser that visits a page as an authenticated admin. Your job is to plant a payload the bot will execute: stored XSS that exfiltrates its session cookie, or a CSRF or race condition that makes it render something it should not. This is how cookie theft works in the real world.
- Step 03
SSRF and Internal Pivoting
Server-Side Request Forgery turns the vulnerable server into your proxy into the internal network. The hardest web challenges chain SSRF with a second bug, like template injection, to reach a service that is not exposed to the internet and exfiltrate a flag from behind it.
- Step 04
XML, XPath, and Path Traversal
Structured input formats open their own attack class. X marks the spot exploits an XXE or XPath injection to read server-side files, and notepad abuses backslash path traversal to write a Jinja2 template that becomes SSTI when you trigger it. Understanding how parsers resolve paths and entities is the key.
- Step 05
Client-Side and WebAssembly Reversing
Not all web logic runs on the server. The Java Script Kiddie challenges make you reverse an obfuscated JS image decoder and brute-force its keys, while the Some Assembly Required series hands you WebAssembly modules with layered XOR and encryption you must decompile and peel apart.