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Making malware (programming.dev)

submitted 1 month ago by [email protected] to c/[email protected]

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This is going to sound fishy.

Recently getting into cybersecurity things and have been pretty interested in looking at malware and maybe making some myself to get the hang of it. Do you guys know any good repositories with malware to learn from? For example, if I wanted to make a credential stealing program, there's a lot of different programs that may have credentials that are valuable. Or, maybe writing a keylogger? I took a look at a rust crate that can record keystrokes but has kind of a weird (or at least not as easy) type system because of different OS implementations, but how do different types of malware consolidate those differences?

I guess the broader question I'm getting at specifically is looking at how already made programs get around different technical obstacles like detailed above.

Thanks

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[–] [email protected] 8 points 1 month ago* (last edited 1 month ago) (1 children)

https://github.com/ytisf/theZoo

Thats a repo of existing malware. Be careful with it. You can use that to start reverse engineering an existing malware. Use a VM that isnt connected to a network.

If you want to write something, go for it. Often malware is tailored to a single OS (Windows), so cross platform is less of a concern.

The hard part of writing malware is doing it in an undetectable way, which will usually require deeper OS knowledge, which you'll have to acquire over time. YouTube has some good videos if you hunt around.

[–] [email protected] 3 points 1 month ago (1 children)

Sweet - I didn't realize that malware is tailored for one OS usually, but that makes a lot more sense.

[–] [email protected] 3 points 1 month ago

https://vx-underground.org/ has a really big database and an awesome papers section. When you will take a look at it you'll ask a question, the answer is infected.