Dart Obfuscator
A VSCode extension that obfuscates Dart and Flutter code by intelligently renaming symbols with random names while preserving framework functionality.
Know Issues !!!!!!
When renaming a field of class, the contructor with named parameter of its subclass won't be updated and cause compile error.
Current workaround is don't use super:field in the contructor of a subclass or manually fix it.
Features
- 🔒 Code Obfuscation: Replaces symbol names with random alphanumeric names (3-12 characters)
- 🎯 Smart Targeting: Only processes
/lib and /test folders for faster performance
- 🛡️ Flutter-Aware: Automatically preserves Flutter framework methods to maintain app functionality
- ⚡ IDE Integration: Uses VSCode's built-in rename refactoring for safe, reference-aware obfuscation
- 🎲 Collision Prevention: Ensures unique name generation across the entire codebase
Installation
- Install from the VSCode Marketplace
- Or install manually:
- Download the
.vsix file from releases
- Open VSCode Command Palette (
Ctrl+Shift+P / Cmd+Shift+P)
- Run
Extensions: Install from VSIX...
- Select the downloaded file
Usage
- Open a Dart/Flutter project in VSCode
- Open Command Palette (
Ctrl+Shift+P / Cmd+Shift+P)
- Run: "Obfuscate Dart Code (Random Names)"
- View progress in the "Dart Obfuscator" output panel
What Gets Obfuscated
The extension renames all user-defined symbols including:
- Classes and abstract classes
- Methods and functions
- Fields and variables
- Properties (getters/setters)
- Named constructors
- Enums and enum values
- Type definitions
What Gets Preserved
Smart detection automatically skips:
- Dart Built-ins:
toString, hashCode, operator==, main, etc.
- Flutter Lifecycle:
build, initState, dispose, didChangeDependencies, etc.
- Flutter Callbacks:
onPressed, onTap, onChanged, validator, etc.
- Flutter Patterns: Methods starting with
didChange, on (callbacks), ending with Builder/Delegate/Handler
- Framework Methods:
setState, createState, mounted, context, etc.
- Animation/Controller:
addListener, forward, reverse, animateTo, etc.
- Navigation:
push, pop, pushReplacement, pushNamed, etc.
- Common Patterns:
copyWith, lerp, of, maybeOf, etc.
Example Output
=== DART CODE OBFUSCATION ===
Processing workspace: my_flutter_app
--- File: lib/models/user.dart ---
Obfuscating Class: User -> Kx9mPq4
✓ Successfully obfuscated to Kx9mPq4
Obfuscating Field: name -> ZtR8wX
✓ Successfully obfuscated to ZtR8wX
Skipping Method: build (Flutter framework method)
Obfuscating Method: updateProfile -> qR7sT2nM
✓ Successfully obfuscated to qR7sT2nM
=== OBFUSCATION COMPLETE ===
Total symbols obfuscated: 47
Benefits
- Code Protection: Makes reverse engineering significantly more difficult
- Intellectual Property: Protects proprietary algorithms and business logic
- Performance: Focused scanning of only essential directories
- Safety: Framework-aware obfuscation prevents app breakage
- Reliability: Uses VSCode's proven rename refactoring engine
Requirements
- VSCode 1.74.0 or higher
- Dart/Flutter project workspace
Extension Settings
No configuration required - works out of the box with sensible defaults.
Known Limitations
- Only processes files in
/lib and /test directories
- Cannot obfuscate external package dependencies
- Some dynamic reflection-based code may require manual exclusion
Contributing
Issues and pull requests are welcome! Please visit our GitHub repository.
License
This extension is licensed under the MIT License.
Release Notes
1.0.0
Initial release with core obfuscation functionality:
- Smart Flutter framework detection
- Focused
/lib and /test processing
- Comprehensive symbol type support
- Safe rename refactoring integration
Enjoy secure coding! 🔐
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