The challange:
Natas2 shows there is nothing on this page

Solving it:
I checked the webpage html code and its the following:

<!-- This stuff in the header has nothing to do with the level -->
<link rel="stylesheet" type="text/css" href="">
<link rel="stylesheet" href="" />
<link rel="stylesheet" href="" />
<script src=""></script>
<script src=""></script>
<script src=></script><script src=""></script>
<script>var wechallinfo = { "level": "natas2", "pass": "ZluruAthQk7Q2MqmDeTiUij2ZvWy2mBi" };</script></head>
<div id="content">
There is nothing on this page
<img src="files/pixel.png">

Checking the body since there is a comment stating that there is nothing to look for in the header. We see there is a pixel in files/pixel.png. Lets see what this image is. It’s just a pixel and nothing to find on it after zooming in. But it shows us a directory named “files”. Lets see what we can find on /files by going to

There are 2 files in this directory. Pixel.png and user.txt.

Lets open user.txt and we found the natas3 user. The file contains the following info:

# username:password