Challenge Description
👈😎👈Zoop👉😎👉Zoop 👈😎👈Zoop👉😎👉Zoop 👈😎👈Zoop👉😎👉Zoop 👈😎👈Zoop👉😎👉Zoop 👈😎👈Zoop👉😎👉Zoop
…
👈😎👈Zoop👉😎👉Zoop 👈😎👈Zoop👉😎👉Zoop 👈😎👈Zoop👉😎👉Zoop 👈😎👈Zoop
made by: ollien
Exploring
So seems it starts with a web page. Let’s take a look first.
This looks like a IM, and a friend talks about sending a file from a website http://storage.zoop. Let’s poke around.
When I click on “Attach” button, a dialog shows up. It allows me to input a URL of the storage.zoop website, and I can even preview the file of the URL I input.
The Attach Dialog
Well, let’s try the file mentioned by our friend first.
Wow. Such anger. So fierce. 
But I just can’t resist to try again with file name flag.txt in that URL.
And… TADA!
