In this challenge, participants are presented with a compressed archive ( .7z ) containing the source code for a fictional online storefront called "Moan Shop." The objective is to identify and exploit vulnerabilities within the application to retrieve a hidden "flag"—a specific string of text that proves the system was successfully breached.
Crafts a malicious POST request to pollute the server’s environment. moanshop.7z
An attacker sends a JSON payload containing the __proto__ key. This allows them to inject properties into the global object prototype, effectively changing the behavior of the entire application. 3. From Pollution to Remote Code Execution (RCE) In this challenge, participants are presented with a