If you are a developer looking to secure your Unity project against the decryption techniques outlined above, standard IL2CPP settings are not enough. Consider implementing the following layers of defense:
00000000 47 4c 4f 42 41 4c 4d 45 54 41 44 41 54 41 44 41 |GLOBALMETADATADA| 00000010 54 0a 31 39 32 2e 31 36 38 2e 31 2e 31 20 2d 3e |T.192.168.1.1 ->| 00000020 2038 2e 38 2e 38 2e 38 20 5b 30 33 3a 30 30 5d | 8.8.8.8 [03:00]|
Use a tool like or Frida to search for the decrypted metadata header in the game’s memory.
: Experts use disassemblers like IDA Pro or Ghidra to find the specific C++ function responsible for loading the metadata. They then reverse-engineer the math to write a standalone decryptor. Specialised Tools : decrypt globalmetadatadat
Technically, a standard global-metadata.dat isn't encrypted—it’s just packed in a proprietary binary format. However, many game developers (especially in the mobile space) apply to this file to prevent hackers from seeing how their game works.
Let us break down the string semantically:
If memory dumping is blocked by anti-cheat, you must find the decryption logic within the game's primary binary (often GameAssembly.dll on Windows or libil2cpp.so on Android). If you are a developer looking to secure
Because this file is a goldmine for hackers, many developers protect it. If you open a standard metadata file in a hex editor, you should see the "magic bytes" AF 1B B1 FA
: Explains how to identify if a file is encrypted and how to find the specific code in the game's binary that decrypts it at runtime. Honkai Impact 3rd Case Study (Part 1)
Sometimes necessary to "dump" the file from memory while the game is running. They then reverse-engineer the math to write a
What is the game built for? (Android, iOS, or Windows?) Do you know what Unity version the game uses?
Set a breakpoint on Il2CppMetadataRegistration or il2cpp::vm::MetadataCache::Initialize .
In a standard, unencrypted Unity IL2CPP game, the global-metadata.dat file contains a predictable header starting with the magic bytes AF 1B B1 FA . Tools like Il2CppInspector automatically parse this file alongside the native binary to produce fully readable C# stub files, mapping exact memory addresses to functions (e.g., Player.UpdateHealth() ).