Add bind rule to the flutter App

ostorlab_insecure_flutter_app/lib/bugs/bind.dart

@@ -0,0 +1,31 @@
+import 'dart:io';
+import 'package:ostorlab_insecure_flutter_app/bug_rule.dart';
+
+/// A [BugRule] that triggers the use of bind.
+class BindRule extends BugRule {
+  /// The tag used to identify instances of this rule.
+  static const String _tag = 'BindRule';
+
+  /// Returns a description of this [BugRule] implementation.
+  @override
+  String get description => 'Bind local host to a port';
+
+  /// Trigger the [BugRule] by starting an HTTP server that listens for connections and binds to a port.
+  @override
+  Future<void> run(String input) async {
+    var port = (input != "") ? int.parse(input) : 4450;
+
+    try {
+      var server = await HttpServer.bind('localhost', port);
+
+      print('Server listening on port $port');
+      await for (var request in server) {
+        request.response
+          ..write('Server running on port $port')
+          ..close();
+      }
+    } catch (e) {
+      print('Failed to bind server: $e');
+    }
+  }
+}

ostorlab_insecure_flutter_app/lib/main.dart

@@ -20,6 +20,7 @@ import 'package:ostorlab_insecure_flutter_app/bugs/webview_insecure_settings.dar
 import 'package:ostorlab_insecure_flutter_app/bugs/oracle_padding.dart';
 import 'package:ostorlab_insecure_flutter_app/bugs/biometric_none_cryptobject.dart';
 import 'package:ostorlab_insecure_flutter_app/bugs/reflection_api.dart';
+import 'package:ostorlab_insecure_flutter_app/bugs/bind.dart';
 
 import 'package:receive_intent/receive_intent.dart' as receive_intent;
 
@@ -102,6 +103,7 @@ class _MyHomePageState extends State<MyHomePage> {
     caller.addRule(OraclePadding());
     caller.addRule(BiometricNoneCryptObject());
     caller.addRule(ReflectionApi());
+    caller.addRule(BindRule());
 
     try {
       await caller.callRules(input);