How do I inject C# code into memory

Question

1.00/5 (2 votes)

See more:

I've been studying crypters for well over a month now and people seem to be very secretive about the code that they want to share.. I have no idea why but it's really hard to learn about this subject so I thought I'd come to the place where are the knowledgable coders are.

What I want to learn & understand is very simple..
I want to understand how to inject code into a windows process.

--WHAT I'VE DONE--

I have a crypter where I load a Payload (Payload being any .exe)
the crypter then reads the byte array then encrypts it.
Stores the encrypted bytes and the password in a stub and then
it should decrypt the bytes and inject them into memory <-- This is where I get stuck.

I have no idea how to load bytes into memory, if there are no code snippets I can read and learn from (All the ones I found has been done in C++) what should I Google to find the best results for me to learn?

What I have tried:

I've tried googleing things like..
C# code injection, injecting code into memory c# and similar stuff but all I can find is people showing how to encrypt and decrypt a byte array and not how to inject it into memory

Posted 30-Dec-16 7:06am

Johnny2121

Updated 30-Dec-16 7:13am

Add a Solution

Comments

Philippe Mori 31-Dec-16 13:14pm

Doing that kind of stuff is very suspicious...

1 solution

Add a Solution

Add your solution here

Treat my content as plain text, not as HTML

Preview 0

…

Existing Members

Sign in to your account

...or Join us

Download, Vote, Comment, Publish.

Your Email
Password
Forgot your password?

Your Email
This email is in use. Do you need your password?
Optional Password

I have read and agree to the Terms of Service and Privacy Policy
Please subscribe me to the CodeProject newsletters

When answering a question please:

Read the question carefully.
Understand that English isn't everyone's first language so be lenient of bad spelling and grammar.
If a question is poorly phrased then either ask for clarification, ignore it, or edit the question and fix the problem. Insults are not welcome.
Don't tell someone to read the manual. Chances are they have and don't get it. Provide an answer or move on to the next question.

Let's work to help developers, not make them feel stupid.

This content, along with any associated source code and files, is licensed under The Code Project Open License (CPOL)

Dave Kreskowiak · Answer 1 · 2016-12-30T07:13:00

Solution 1

You mean like this? Injecting .Net Assemblies Into Unmanaged Processes[^]

Posted 30-Dec-16 7:13am

Dave Kreskowiak

Comments

Johnny2121 30-Dec-16 13:16pm

That's a great thread but doesnt that one require knowledge of C++?

Dave Kreskowiak 30-Dec-16 14:04pm

That's the problem. The .NET CLR doesn't support directly injecting code into another process. You have to use a stub that does, and that's done in C.

Johnny2121 30-Dec-16 14:08pm

I have a stub in which where I load a RunPE.. The RunPE isnt made in C# it's made in C++, but how do I inject it with C#, it's really hard for me to explain but i'll take a look through that post.