Cheat Engine

[onlyu1106]

I'm using C# to inject my ASM code into game to make the bot
My problem here is how to inject by C#?
I researched and my result are:
VirtualAlloc / VirtualAllocEX (I should use VirtualAlloc or VirtualAllocEX?
WriteProcessMemory
CreateRemoteTheard
WaitForSingleObject / WaitForMultipleObjects ( I should use WaitForSingleObject or WaitForMultipleObjects ?)
VirtualFree/ VirtualFreeEX
CloseHandle(Thread)
Is it right? Please help me, sorry if my english is not good

[atom0s]

If you are looking to do memory edits to a remote process in C# you can use the Process class to obtain the process and its handle:
https://msdn.microsoft.com/en-us/library/system.diagnostics.process(v=vs.110).aspx

Afterward you may need the following API imports:
- VirtualAllocEx
- VirtualFreeEx
- VirtualProtectEx
- CreateRemoteThread
- WaitForSingleObject
- GetExitCodeThread
- WriteProcessMemory

In C# you don't need to use CloseHandle since the process namespace will handle that for you if you use the handle from that. You also don't need things like VirtualAlloc / VirtualFree since those are meant for the current process and not remote processes. (The Ex versions are meant for remote processes.)

If you are just looking to write things like nops or other simple patches you wont need CreateRemoteThread either.

As for WaitForSingleObject or WaitForMultipleObjects, you only need WaitForSingleObject since you are only creating a single handle (the thread if needed) and are waiting for that alone.

[onlyu1106]

serialize is:
VirtualAllocEx
VirtualProtectEx
WriteProcessMemory
CreateRemoteThread
WaitForSingleObject
GetExitCodeThread
Isnt it???

[atom0s]

What do you mean by serialize? Since the API you listed is the common API for DLL injection, but nothing to do with any type of serialization.