When automated tools fail, you must go deeper. This method involves reverse engineering the game's native library (e.g., libil2cpp.so ) using a disassembler like IDA Pro. The goal is to locate and understand the function responsible for decrypting the global-metadata.dat file.
Dump the memory region where the decrypted metadata is stored. Step 4: Fix the Dumped File
The global-metadata.dat file contains the "blueprints" for this code: Class names and namespaces String literals Field signatures
dummy.dll : Placeholder assembly files that can be loaded into advanced decompilers like or ILSpy for visual code browsing. Legal and Ethical Considerations decrypt globalmetadatadat
Once you successfully acquire a decrypted global-metadata.dat file, you can finally view the game's structure. Download .
You use a Frida script to hook into the game process while it's running. When the game loads and decrypts the metadata in memory, the script dumps it to a file. Tool: Il2CppMetadataExtractor (tested on Android). Steps: Install Python and Frida. Run the script with the package name of the app. python dump-metadata.py package_name . 2. Using Specialized Decryption Scripts (GitHub)
Instead of figuring out a complex encryption algorithm, the easiest workaround is to let the game decrypt the file for you. Once the game boots up, the decrypted metadata resides safely in the device's RAM. You just have to pull it out. Step 1: Use Frida to Dump Memory When automated tools fail, you must go deeper
The script scans the read-allocated regions ( r-- ) of memory to detect the standard AF 1B B1 FA header structure. It automatically calculates the file limits and outputs a clean, decrypted global-metadata.dat file to your working desktop folder.
Because unprotected metadata allows anyone to look at a game's inner workings, game studios and security platforms (like Anti-Cheat utilities, AppSealing, or VMProtect) deliberately obfuscate or encrypt global-metadata.dat . If the file is altered, standard decompilers will throw format validation errors or find a completely empty 0-KB file block. 2. Common Metadata Encryption Techniques
Reverse engineering for the purpose of piracy, intellectual property theft, or redistribution of proprietary code is illegal under intellectual property frameworks globally, such as the Digital Millennium Copyright Act (DMCA) in the United States. Dump the memory region where the decrypted metadata
If you have ever tried to mod, data-mine, or reverse-engineer a modern mobile or PC game, you have likely encountered a file named global-metadata.dat . This file is the holy grail for extracting game logic, variable names, and structure from games built using the Unity engine.
In , search for string references to "global-metadata.dat" to find the function that opens it.
