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You are watching: How to inject dll with cheat engine


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In this How to Inject a DLL C# tutorial we will teach you how to convert our previous C# Trainer into a DLL injector. This is a beginner tutorial.In the previous video we learned how to use platform invoke or pinvoke to expose native Windows API functions to our managed process, essentially we are using signatures to get the address of exported functions. We will continue that process with a couple new functions so we can make a simple CreateRemoteThread + LoadLibrary C# DLL injector.I will show you different native and managed methods of doing a couple things, just to give you some more experience with C#. For example, OpenProcess() and CloseHandle() are native functions that are not necessary, these are taken care of you automatically with the managed methods.C# is a object orientated programming language that was developed in 2000 by Microsoft. The intuitive syntax of the language makes it a great place to start to learn how to inject a dll. A DLL is a Dynamic Link Library which is a Windows library file used in a program like CSGO or Notepad to call existing functions. DLL Injection is a technique to manipulate the process/program running a DLL file within its process address space.In this tutorial you will cover Windows API functions like OpenProcess(), CreateRemoteThread(), and VirtualAllocEx(). All of these functions are key instruments used and are crucial in learning how to inject a dll. An injector can be used to increase rights and authority over a targets computer or manipulate certain parameters within a game. As a subset of the C language, C# has the tools and functions available to create an injector that can go undetected on your targets computer.Guided Hacking has crafted this C# dll injector tutorial to accommodate complete beginners just starting out on their dll injection journey. Once you learn how to inject a dll you can leverage the knowledge gained from this tutorial to go on a learn about even more advanced concepts for code injection and create an injection that has added stealthier features.The most important part of this tutorial is learning about the fundamental concepts behind C#, what a DLL is, and how dll injection can be used to achieve the results you want. All the technical details required for dll injection are covered in this C# tutorial. We hoped you enjoy this dll injector tutorial and once you learn how to inject a dll you go on to create more advanced C# dll injector programs.

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There were 2 bugs in the video, so either watch until the end to see the fixes or just download the completed source code. You must run as administrator and you must compile for the same bitness as the target process, x86 vs x64.


You may also be interested in our C++ DLL Injector tutorial

Links from video​

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Sample of code from C# DLL injector tutorial:
public static bool InjectDLL(string dllpath, string procname){ Process<> procs = Process.GetProcessesByName(Path.GetFileNameWithoutExtension(procname)); if (procs.Length == 0) { return false; } Process proc = procs<0>; //redundant native method example - GetProcessesByName will automatically open a handle int procid = GetProcId(procname); IntPtr hProc = OpenProcess(ProcessAccessFlags.All, false, proc.Id); // if (proc.Handle != IntPtr.Zero) { //proc.Handle = managed IntPtr loc = VirtualAllocEx(proc.Handle, IntPtr.Zero, MAX_PATH, AllocationType.Commit | AllocationType.Reserve, MemoryProtection.ReadWrite); if (loc.Equals(0)) { return false; } IntPtr bytesRead = IntPtr.Zero; bool result = WriteProcessMemory(proc.Handle, loc, dllpath.ToCharArray(), dllpath.Length, out bytesRead); if (!result || bytesRead.Equals(0)) { return false; } IntPtr loadlibAddy = GetProcAddress(GetModuleHandle("kernel32.dll"), "LoadLibraryA"); //redundant native method example - MUST BE CASE SENSITIVE CORRECT loadlibAddy = GetProcAddress(GetModuleBaseAddress(proc.Id, "KERNEL32.DLL"), "LoadLibraryA"); IntPtr hThread = CreateRemoteThread(proc.Handle, IntPtr.Zero, 0, loadlibAddy, loc, 0, out _); if (!hThread.Equals(0)) //native method example CloseHandle(hThread); else return false; } else return false; //this will CloseHandle automatically using the managed method proc.Dispose(); return true;}