Injectopi is a set of tutorials that I've decided to write down in order to learn about various injection techniques in the Windows' environment. The idea came to my mind when I noticed these awesome sources by Hasherezade.
Here is what I thought:
"Is there anything better than a mighty animal with multiple arms swinging poisonous pointy weapons?"
This tutorial shows how you can create a program that, when run, will inject code into an existing process. We will show multiple techniques of increasing complexity discovered by security researchers and malware coders. It has to be noted that these list is not complete as it only shows the main techniques!
| Name | Description | Main WINAPI |
|---|---|---|
| CreatePatched | Spawns a benign process with its Entrypoint patched with a shellcode | CreateProcess, VirtualProtectEx, ReadProcessMemory |
| CreateSection | Creates a new executable section, containing a shellcode, in an existing process | CreateProcess, ZwCreateSection, NtMapViewOfSection, ZwCreateThreadEx |
| CreateSectionAPC | Same as CreateSection: this time asynchronous procedure calls will be used. | CreateProcess, ZwCreateSection, NtMapViewOfSection, NtQueueApcThread |
| FullCopy | Allocates an executable memory region in an existing process and copies itself in that region | ZwCreateSection, NtMapViewOfSection |
If you want to compile each binary it is suggested to use:
- Visual Studio 2017 (Community will suffice)
- Windows 7+
Just open Injectopi.sln with Visual Studio!
Make sure to have the Desktop C++ x86 and x64 components enabled with your Visual Studio installation!
You should be ready to go!
I have commented what the shellcode does in the file SHELLCODE.md.
Here below you can find a list of interesting articles / websites / papers which I found useful while writing down Injectopi!
From their website:
Imagine running your favorite Windows applications and drivers in an open-source environment you can trust. That's ReactOS. Not just an Open but also a Free operating system.
ReactOS is an awesome project which aims at open-sourcing the Windows OS by reverse engineering it. The documentation you find on their website is pure gold.
skape's "Understanding Windows Shellcode" paper is a great resource that will surely help you understand how Windows' internals work and how to use them to write shellcode.
The shellcode I use in these examples uses some techniques shown in the paper!
Any contribution is very welcome! Feel free to open issues and pull requests!
This project idea was born thanks to Hasherezade's demo repository and the constant support of my instructor Federico Maggi.
Special thanks to my friends Francesco and Giancarlo that helped me review everything!
Copyright 2017 Giulio De Pasquale
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