Part I I— Preventing Decompilation of Your DLL/EXE files | by Tal Kleiman
If the DLL was written in C# or Visual Basic .NET, it is considered "managed code." These files compile into Intermediate Language (IL), which retains a significant amount of metadata (names of classes, methods, and variables). dll decompiler online
Just because you can decompile a DLL doesn't mean you should . Before using any , consider these rules: Part I I— Preventing Decompilation of Your DLL/EXE
If the DLL was written in C++, it is "unmanaged code." This compiles directly to native machine code (binary). During this process, the compiler strips away almost all human-readable context. Variable names like UserAccountBalance become memory addresses (e.g., [ebp-0x10] ), and high-level loops become jmp (jump) instructions. dll decompiler online