How to recompile DLL's and Assets into a Unity3d file.

I recently decompiled my Unity3d game (yes, it was my game).

The reason I decompiled it was to see how easy it is for hackers to hack my game (I have only one server because of costs, so almost everything is client-based (except for my maps) and my unity3d can be downloaded (due to how I made my website))

So, back to my question, how do I recompile the DLLs AND the (compressed) Asset files, to make a unity3d file?

So, ((DLL) + (DLL) + (DLL)) + (SharedAssets0.assets + SharedAssets1.assets) = UNITY3D File