Reversing Unity IL2CPP

Unity ships in two very different shapes, and identifying which one you have is the entire first decision. A Mono build hands you decompilable .NET assemblies. An IL2CPP build compiles C# to C++ to native code, and the C# metadata lives in a separate file that you must recombine with the binary before anything is readable.

When to Use

• The APK contains assets/bin/Data/Managed/Metadata/global-metadata.dat and lib/arm64-v8a/libil2cpp.so
• The APK contains assets/bin/Data/Managed/Assembly-CSharp.dll (Mono build)
• The IPA contains Frameworks/UnityFramework.framework
• jadx shows only UnityPlayerActivity and Unity plumbing
• You need to recover game or app logic, anti-cheat behaviour, or the API layer

When NOT to Use