Contact CTF writeups Notes

[PicoCTF 2018] - web - Mr Robots

This is one of my writeups for PicoCTF 2018

Problem

Do you see the same things I see? The glimpses of the flag hidden away? http://2018shell3.picoctf.com:15298

Hints :

  1. What part of the website could tell you where the creator doesn't want you to look?

Solution

The name of the task and the hint are obviously pointing at robots.txt, so let's see what's there :

User-agent: *
Disallow: /c4075.html

Now we have a path to check : /c4075.html. If we open the page, we immediately get the flag : picoCTF{th3_w0rld_1s_4_danger0us_pl4c3_3lli0t_c4075}