NayClient
A lightweight, injectable utility client for Minecraft: Bedrock Edition written in C

What is this?

NayClient is a small, injectable utility client for Minecraft: Bedrock Edition (Windows x64), written from scratch in C. It ships as a DLL that is injected into the game and a console launcher that drives it. We do not take responsibility for anything done with this software.

If you want a minimal, readable base to build Bedrock modules on — without a heavy C++ SDK — look no further.

• 🧩 Tiny module framework — register enable/disable/tick callbacks, toggle at runtime
• 📡 Packet sender — bind a live ClientInstance and send constructed Bedrock packets
• 👥 PlayerNotifier — detects PlayerListPacket joins/leaves and reports them in-game
• 🎛️ Console launcher — version-gated injection, colored status, live command loop
• ♻️ Clean unload — restores every patch and frees the library on exit

How it works

NayClient follows the same model as other Bedrock clients: per-version signatures and offsets anchored into the running module.

1. Launcher (naylauncher.exe) checks the Minecraft version, then injects nayclient.dll via VirtualAllocEx + WriteProcessMemory + CreateRemoteThread(LoadLibraryW).
2. Client (nayclient.dll) spins a worker thread that waits on named events (Local\NayClient.*.<pid>) for toggles and unload.
3. Modules resolve their targets in the live process — a known vtable RVA (Fullbright) or an AOB signature (NoFire) — then apply and cleanly revert their patches.

Building

Requirements: CMake 3.20+, a Windows x64 toolchain (MSVC recommended; MinGW-w64 works).

cmake -S . -B build
cmake --build build --config Release

Outputs:

• nayclient.dll — the injectable client
• naylauncher.exe — the launcher (expects nayclient.dll next to it)

Usage

naylauncher.exe        # start Minecraft first, then run the launcher
help                   # list commands
status                 # client and module state
fullbright             # toggle Fullbright
nofire                 # toggle NoFire
quit                   # disable modules and unload

Project layout

include/nay/           public headers
src/client.c           DllMain, worker thread, client lifecycle
src/launcher/          console launcher + injector
src/modules/           module framework + fullbright / nofire / nohurtcam
src/network/           validated LoopbackPacketSender bridge
src/platform/          Minecraft version detection

Disclaimer

NayClient is not affiliated with Mojang or Microsoft. All brands and trademarks belong to their respective owners. It is not a Mojang-approved product and is not associated with Mojang. Use it at your own risk, only on servers and in modes where you are permitted to.

Licensing

This project is provided as-is for educational and research purposes. See the LICENSE file for details.