Moanshop.7z 〈Exclusive Deal〉

Leftover API keys or developer credentials.

Triggers a system command (e.g., cat /flag.txt ) to read the secret flag. moanshop.7z

The file is associated with a widely known and high-stakes Capture The Flag (CTF) challenge, typically categorized under Web Exploitation or Reverse Engineering . Leftover API keys or developer credentials

Once the attacker can "pollute" the global object, they target specific application behaviors to gain control: Once the attacker can "pollute" the global object,

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)

While the exact details can vary depending on the specific competition (e.g., SECCON, HTB, or private bug bounty simulations), the typical write-up for this challenge focuses on three main stages:

The application uses a vulnerable library (like lodash or merge-deep ) to combine user input into a configuration object.