Il2CppDumper — iOS Tweak

A runtime IL2CPP metadata dumper for jailbroken iOS. Extracts full C# metadata (dump.cs, per-assembly headers, il2cpp.h, script.json, DummyDll/) from any Unity game at runtime — no offsets needed, no version lock-in.

Works on all IL2CPP versions (Unity 2018.3 → Unity 6).

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Features

• Dump.cs — full C# pseudocode of every class, field, property, method
• Per-assembly .cs files — split output for each managed DLL
• il2cpp.h — C struct definitions for IDA/Ghidra import
• script.json — method RVAs with full namespace.Class$$method names
• DummyDll/ — real .NET PE assemblies with [Address(RVA="…")] and [FieldOffset(Offset="…")] custom attributes, ready to open in dnSpy/ILSpy
• RE scripts bundled — ida.py, ida_py3.py, ghidra.py, hopper-py3.py, binja/ghidra header converters
• Preferences UI in Settings.app — per-app toggles, metadata detection, live search
• In-app HUD overlay — blur backdrop, gradient card, live progress bar, status text, stats, Share & Done buttons
• Crash-safe — every class / field / method is wrapped in @try/@catch; a single broken class doesn't abort the dump

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Installation

1. Build the .deb with make package (Theos + rootless scheme required)
2. Install on jailbroken device (Dopamine / palera1n)
3. Open Settings → Il2CppDumper:
   • Enable the master switch
   • Select target apps (the Unity Apps category auto-detects IL2CPP metadata)
   • Configure output files and wait time
4. Launch the game — the HUD will appear and show live dump progress
5. Tap Share on success to send the .zip via AirDrop / Files / Messages

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Output Structure

AppName_UNITYDUMP.zip
├── dump.cs                 # full combined C# dump
├── script.json             # method RVAs for IDA/Ghidra
├── il2cpp.h                # C struct definitions
├── logs.txt                # dump statistics
├── Assembly/
│   ├── Assembly-CSharp.cs
│   ├── mscorlib.cs
│   └── ...                 # per-assembly splits
├── DummyDll/
│   ├── Assembly-CSharp.dll # .NET DLLs with RVA attributes
│   └── ...                 # open in dnSpy
└── scripts/
    ├── ida.py
    ├── ida_py3.py
    ├── ghidra.py
    └── ...                 # bundled RE helper scripts

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Screenshots

Settings

In-game HUD

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Build

cd Il2CppDumper

# Rootless (Dopamine, palera1n rootless)
THEOS_PACKAGE_SCHEME=rootless make clean package FINALPACKAGE=1

# Rootful (unc0ver, Taurine)
THEOS_PACKAGE_SCHEME= make clean package FINALPACKAGE=1

The resulting .deb appears in Il2CppDumper/packages/.

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Credits & Thanks

• Tien0246 — original IOS-Il2CppDumper
• Batchhh
• Perfare / Il2CppDumper — reference implementation
• UE4Dumper-4.25
• Zygisk-Il2CppDumper
• zxsrxt-kebab-case — runtime dumper improvements

Tweak & UI by Leeksov · Telegram