How does the code flow in a crypter? What do they do?

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Okay so..
I've always been interested in crypters because I find it very fascinating.. How it can take a file, encrypt it, you compile it and then when you start the compiled exe it decrypts itself and shoots itself into a memory process..

Atleast thats how I think they work.

Now.. I've been really wanting to learn how to create one but there are so few documents.. Especially when it comes to C#.

And before people start thinking this is for some malicious use. Its not..
If I wanted to use it for something malicious I would have asked how to make a FUD one and no thats not the case..

I would just like to create a SUPER basic one to understand how the code flows.

And when I say SUPER basic I really mean SUPER basic..
Im talking about a WinForm application with a 2x textboxes.. One for the payload and one for the icon and a button that compiles it into a exe.

Are there any documents on this online or is anyone here willing to dumb the process down for me?

Any help is very appriciated.

What I have tried:

I've tried reading ducoments and asking different types of people on different types of forums.

Posted 21-Dec-16 0:22am

Johnny Vegas

Updated 21-Dec-16 0:32am

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CPallini · Answer 1 · 2016-12-21T00:32:00

Solution 1

Here some info: c++ - CreateProcess from memory buffer - Stack Overflow[^].

Posted 21-Dec-16 0:32am

CPallini

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Johnny Vegas 21-Dec-16 6:35am

Yeah that's not going to go very well due to the fact that I dont do C++.. I know its quite similar but it's going to confuse me even more since I dont know how to create a crypter.