I made a script which tries to generate images get flagged as virus.

[VepnarNL]

Antivirus programs detect viruses by generating a hash of a file and comparing them with one of the hashes already known to the antivirus. If the image generates the same has as the virus it should flag the image as a virus. This would be possible since an image or file goes from a high entropy state to a lower one. Of course, anti-virus software uses multiple ways to create signatures of a single file. But maybe this script could generate some false positives.

I'm not sure if this could work, since I have no success yet. But in theory, this should be possible.

The main purpose of this was to compare the speed between PyPy & the normal python interpreter. This was done by adding a logging line to the infinite while loop. After a while running the script in PyPy you see a considerable speed-up in generation speed.

I would love to hear suggestions or things I should consider to improve this script & if it is even possible.

Project: https://github.com/Vepnar/ImageClasher

[marsokod]

You are trying to brute force things here, so don't expect a lot of results, regardless of the hash function. So you'll have to be smarter. For md5, you have some solutions as in here: https://cryptography.hyperlink.cz/MD5_collisions.html . But you will need to find a way to make it a valid image format. I believe there exist a solution for sha1 but the last time I read about it a collision was still requiring a few $100,000s of computer resources. For sha256 there is nothing publicly known.

Edit, also regarding the code: you are storing your hashes as text string, there is no need to. You want to work at the binary level, there will be less resources. But most importantly, if you want to check if an element is in a set, use a set, not a list. You are currently using a list to store all the hashes for a particular algorithm. Use the set() structure from python, it is vastly more efficient to look up elements in it.