If anyone has any suggestions for tags, feel free to add them, seeing as i'm not yet familiar with the ones used on this site.
I was wondering what the dangers are of appending a file to an image.
If you are using windows you can type
copy /b aPicture.jpg + someFile.xy newPicture.jpg
I did this and are sharing these 2 files, one with a simple txt message and one with a winrar archive:
The first image has a txt file in it, the second a winrar archive.
When you open the images with notepad++ you can clearly see the attachments.
Now my question: How dangerous is this technique?
Consider you had a graphical process, let's assume it was a gui program or that old cracked copy of counterstrike 1.6 everybody has somewhere around. If I would replace a texture in the game for example with a manipulated image, could I then exec code somehow?
It is possible to open the image directly with winrar, so I was wondering if one could exploit this for any purpose.
Has anybody ever made experience with this?
Since I first heard about it ,and after reading "daemon" by Daniel Suarez I am very suspicous at videogames, especially when they are shared at Lan-Partys and the like.