Axino.net

hackertest.net level 15 :: really valid photo

by Arxleol on Saturday 28.11.2009, under hackertest.net, tutorial

Now interesting thing with this challenge is you do not need to search for clues on the page for images or anything else, but link to the image is offered to you. So let’s try and open it.

Now if you open this image there is high probability that you will not see a thing, more interesting is that Firefox is able to show you this image. But since I tried this challenge in Google Chrome at first I noticed that image is not valid. And even if you save image on your system and try to open it you will see message something like invalid image or similar.

Of course I am talking about following image:

images/pass2level16.jpg

Now since this image is not valid this can only mean that it is not formatted correctly and that there is some data hidden inside. So what you should do now is to open image in the notepad or some other simple text editor.

ÿØÿà JFIF   d d  ÿì Ducky     P  ÿî Adobe dÀ   ÿÛ „ 
 
 Level 16: unavailable  ÿÀ    ÿÄ K                                                                ÿÚ   ? ¿€  ?ÿÙ

ÿØÿà JFIF   d d  ÿì Ducky     P  ÿî Adobe dÀ   ÿÛ „ 

 

 Level 16: unavailable  ÿÀ    ÿÄ K                                                                ÿÚ   ? ¿€  ?ÿÙ

This is the code you will see when opening image contents in the notepad. Notice the following line: Level 16: unavailable now this gives us important clue how to proceed. We will just enter unavailable as folder and see what we get. So the URL for level 16 is following:

http://www.hackertest.net/unavailable/

Now try solving that one before next tutorial ;)

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