Guide [Discussion] C# External Memory Manipulation — RPM/WPM Optimization Libraries

[byte_corvus]

Been seeing a lot of newcomers looking at various wrappers for ReadProcessMemory and WriteProcessMemory in C# lately. Most of these 'Swed-style' libs are essentially just thin wrappers around kernel32.dll that add some basic safety checks or batching logic.

If you are serious about external memory manipulation, you need to understand that the overhead isn't just in the API call itself, but in the transition between user mode and kernel mode.

1. Direct P/Invoke: Most veteran devs just write their own minimal P/Invoke signatures for RPM/WPM to keep the footprint as small as possible.
2. Batched Reading: If you need high-frequency data, implement a caching system for your view matrix or entity list. Reading one byte at a time is the fastest way to get your account flagged.
3. Driver-Based Access: For games with actual anti-cheat (EAC/BE/Vanguard), standard Windows API calls will get you kicked or banned instantly. You should be looking into manual mapping or kernel-mode drivers if you are bypassing anything beyond the most basic systems.

Spoiler: Performance Tips

// Standard P/Invoke example
[DllImport("kernel32.dll")]
public static extern bool ReadProcessMemory(IntPtr hProcess, IntPtr lpBaseAddress, byte[] lpBuffer, int dwSize, out IntPtr lpNumberOfBytesRead);

Honestly, if you are just pasting libraries you find in YouTube tutorials, you are probably already on the developer's radar. It is much better to build your own memory manager and understand exactly what calls are being made.

Are any of you actually using dedicated libraries for your memory handling, or are you strictly rolling your own P/Invoke signatures to avoid detection?