flutter_security_check

A robust Flutter plugin for Android app integrity and security checks. This plugin helps protect your application from reverse engineering, debugging, and unauthorized modifications.

Features

• Anti-Root Detection: Detects common root binaries and management apps (Magisk, SuperSU, etc.).
• Anti-Debugger (Native Level): Uses low-level ptrace checks and system status monitoring to detect attached debuggers.
• Anti-Frida Detection: Scans memory mappings for the presence of Frida agents, gadgets, and common hooking signatures.
• Security Details: Provides detailed information about which security threat was detected.

Getting Started

Add the plugin to your pubspec.yaml:

dependencies:
  flutter_security_check:
    path: ./plugins/flutter_security_check

Usage

Simple Check

bool isSecure = await FlutterSecurityCheck.isDeviceSecure;
if (!isSecure) {
  // Take action (e.g., close app)
}

Detailed Security Report

Map<String, dynamic> details = await FlutterSecurityCheck.securityDetails;

print("Is Rooted: ${details['isRooted']}");
print("Is Emulator: ${details['isEmulator']}");
print("Is Debugger Attached: ${details['isDebuggerAttached']}");
print("Is Frida/Native Threat: ${details['isFridaOrNativeThreat']}");
print("Is Proxy Enabled: ${details['isProxyEnabled']}");
print("Is VPN Active: ${details['isVpnActive']}");
print("Is Xposed Detected: ${details['isXposedDetected']}");
print("App Signature Hash: ${details['appSignature']}");

Technical Details

The plugin uses a sophisticated multi-layered security approach:

1. Dart Layer: Provides a clean asynchronous API for Flutter.
2. Kotlin Layer: Manages Android-specific security checks, context-based settings analysis, and package management queries.
3. C++ (Native/JNI) Layer:
   • Implements Instruction Pattern Matching to detect inline hooks at the assembly level.
   • Handles string obfuscation to bypass basic static analysis.
   • Directly interacts with Linux system files and network sockets for high-integrity detection.

License

MIT License