Flutter Dev

Flutter Dev

1633502169

Flutter Reverse Engineering Framework

This framework helps with Flutter apps reverse engineering using the patched version of the Flutter library which is already compiled and ready for app repacking. This library has snapshot deserialization process modified to allow you perform dynamic analysis in a convenient way.

Key features:

  • socket.cc is patched for traffic monitoring and interception;
  • dart.cc is modified to print classes, functions and some fields;
  • contains minor changes for successfull compilation;
  • if you would like to implement your own patches, there is manual Flutter code change is supported using specially crafted Dockerfile

Supported engines

  • Android: arm64, arm32;
  • iOS: arm64;
  • Release: Stable, Beta

Install

# Linux, Windows, MacOS
pip3 install reflutter

Usage

impact@f:~$ reflutter main.apk

Please enter your Burp Suite IP: <input_ip>

SnapshotHash: 8ee4ef7a67df9845fba331734198a953
The resulting apk file: ./release.RE.apk
Please sign the apk file

Configure Burp Suite proxy server to listen on *:8083
Proxy Tab -> Options -> Proxy Listeners -> Edit -> Binding Tab

Then enable invisible proxying in Request Handling Tab
Support Invisible Proxying -> true

impact@f:~$ reflutter main.ipa

Traffic interception

You need to specify the IP of your Burp Suite Proxy Server located in the same network where the device with the flutter application is. Next, you should configure the Proxy in BurpSuite -> Listener Proxy -> Options tab

  • Add port: 8083
  • Bind to address: All interfaces
  • Request handling: Support invisible proxying = True

You don't need to install any certificates. On an Android device, you don't need root access as well. reFlutter also allows to bypass some of the flutter certificate pinning implementations.

Usage on Android

The resulting apk must be aligned and signed. I use uber-apk-signer java -jar uber-apk-signer.jar --allowResign -a release.RE.apk. To see which code is loaded through DartVM, you need to run the application on the device. reFlutter prints its output in logcat with the reflutter tag

impact@f:~$ adb logcat -e reflutter | sed 's/.*DartVM//' >> reflutter.txt

code output

Library:'package:anyapp/navigation/DeepLinkImpl.dart' Class: Navigation extends Object {  

String* DeepUrl = anyapp://evil.com/ ;

 Function 'Navigation.': constructor. (dynamic, dynamic, dynamic, dynamic) => NavigationInteractor { 
  
                   }
    
 Function 'initDeepLinkHandle':. (dynamic) => Future<void>* { 
  
                   }
    
 Function '_navigateDeepLink@547106886':. (dynamic, dynamic, {dynamic navigator}) => void { 

                   }
 
       }
 
Library:'package:anyapp/auth/navigation/AuthAccount.dart' Class: AuthAccount extends Account {

PlainNotificationToken* _instance = sentinel;
 
 Function 'getAuthToken':. (dynamic, dynamic, dynamic, dynamic) => Future<AccessToken*>* { 

                   }
  
 Function 'checkEmail':. (dynamic, dynamic) => Future<bool*>* { 
 
                   }

 Function 'validateRestoreCode':. (dynamic, dynamic, dynamic) => Future<bool*>* { 
 
                   }

 Function 'sendSmsRestorePassword':. (dynamic, dynamic) => Future<bool*>* { 

                   }
       }

 

Usage on iOS

Use the IPA file created after the execution of reflutter main.ipa command. To see which code is loaded through DartVM, you need to run the application on the device. reFlutter prints its output in console logs in XCode with the reflutter tag.

To Do

  •  Display absolute code offset for functions;
  •  Extract more strings and fields;
  •  Add socket patch;
  •  Extend engine support to Debug using Fork and Github Actions;
  •  Improve detection of App.framework and libapp.so inside zip archive

Build Engine

The engines are built using reFlutter in Github Actions to build the desired version, commits and snapshot hashes are used from this table. The hash of the snapshot is extracted from storage.googleapis.com/flutter_infra_release/flutter/<hash>/android-arm64-release/linux-x64.zip

release

gif

Custom Build

If you would like to implement your own patches there is manual Flutter code change is supported using specially crafted Docker

sudo docker pull ptswarm/reflutter

# Linux, Windows
EXAMPLE BUILD ANDROID ARM64:
    sudo docker run -e WAIT=300 -e x64=0 -e arm=0 -e HASH_PATCH=<Snapshot_Hash> -e COMMIT=<Engine_commit> --rm -iv${PWD}:/t ptswarm/reflutter

FLAGS:
    -e x64=0                         <disables building for x64 archiitechture, use to reduce building time>
    -e arm=0                         <disables building for arm archiitechture, use to reduce building time>
    -e WAIT=300                      <the amount of time in seconds you need to edit source code>
    -e HASH_PATCH=[Snapshot_Hash]    <here you need to specify snapshot hash which matches the engine_commit line of enginehash.csv table best. It is used for proper patch search in reFlutter and for successfull compilation>
    -e COMMIT=[Engine_commit]        <here you specify commit for your engine version, take it from enginehash.csv table or from flutter/engine repo>

Download Details:
 

Author: ptswarm
Download Link: Download The Source Code
Official Website: https://github.com/ptswarm/reFlutter 
License: GPL-3.0 License

#flutter 

What is GEEK

Buddha Community

Flutter Reverse Engineering Framework

Google's Flutter 1.20 stable announced with new features - Navoki

Flutter Google cross-platform UI framework has released a new version 1.20 stable.

Flutter is Google’s UI framework to make apps for Android, iOS, Web, Windows, Mac, Linux, and Fuchsia OS. Since the last 2 years, the flutter Framework has already achieved popularity among mobile developers to develop Android and iOS apps. In the last few releases, Flutter also added the support of making web applications and desktop applications.

Last month they introduced the support of the Linux desktop app that can be distributed through Canonical Snap Store(Snapcraft), this enables the developers to publish there Linux desktop app for their users and publish on Snap Store.  If you want to learn how to Publish Flutter Desktop app in Snap Store that here is the tutorial.

Flutter 1.20 Framework is built on Google’s made Dart programming language that is a cross-platform language providing native performance, new UI widgets, and other more features for the developer usage.

Here are the few key points of this release:

Performance improvements for Flutter and Dart

In this release, they have got multiple performance improvements in the Dart language itself. A new improvement is to reduce the app size in the release versions of the app. Another performance improvement is to reduce junk in the display of app animation by using the warm-up phase.

sksl_warm-up

If your app is junk information during the first run then the Skia Shading Language shader provides for pre-compilation as part of your app’s build. This can speed it up by more than 2x.

Added a better support of mouse cursors for web and desktop flutter app,. Now many widgets will show cursor on top of them or you can specify the type of supported cursor you want.

Autofill for mobile text fields

Autofill was already supported in native applications now its been added to the Flutter SDK. Now prefilled information stored by your OS can be used for autofill in the application. This feature will be available soon on the flutter web.

flutter_autofill

A new widget for interaction

InteractiveViewer is a new widget design for common interactions in your app like pan, zoom drag and drop for resizing the widget. Informations on this you can check more on this API documentation where you can try this widget on the DartPad. In this release, drag-drop has more features added like you can know precisely where the drop happened and get the position.

Updated Material Slider, RangeSlider, TimePicker, and DatePicker

In this new release, there are many pre-existing widgets that were updated to match the latest material guidelines, these updates include better interaction with Slider and RangeSliderDatePicker with support for date range and time picker with the new style.

flutter_DatePicker

New pubspec.yaml format

Other than these widget updates there is some update within the project also like in pubspec.yaml file format. If you are a flutter plugin publisher then your old pubspec.yaml  is no longer supported to publish a plugin as the older format does not specify for which platform plugin you are making. All existing plugin will continue to work with flutter apps but you should make a plugin update as soon as possible.

Preview of embedded Dart DevTools in Visual Studio Code

Visual Studio code flutter extension got an update in this release. You get a preview of new features where you can analyze that Dev tools in your coding workspace. Enable this feature in your vs code by _dart.previewEmbeddedDevTools_setting. Dart DevTools menu you can choose your favorite page embed on your code workspace.

Network tracking

The updated the Dev tools comes with the network page that enables network profiling. You can track the timings and other information like status and content type of your** network calls** within your app. You can also monitor gRPC traffic.

Generate type-safe platform channels for platform interop

Pigeon is a command-line tool that will generate types of safe platform channels without adding additional dependencies. With this instead of manually matching method strings on platform channel and serializing arguments, you can invoke native class and pass nonprimitive data objects by directly calling the Dartmethod.

There is still a long list of updates in the new version of Flutter 1.2 that we cannot cover in this blog. You can get more details you can visit the official site to know more. Also, you can subscribe to the Navoki newsletter to get updates on these features and upcoming new updates and lessons. In upcoming new versions, we might see more new features and improvements.

You can get more free Flutter tutorials you can follow these courses:

#dart #developers #flutter #app developed #dart devtools in visual studio code #firebase local emulator suite in flutter #flutter autofill #flutter date picker #flutter desktop linux app build and publish on snapcraft store #flutter pigeon #flutter range slider #flutter slider #flutter time picker #flutter tutorial #flutter widget #google flutter #linux #navoki #pubspec format #setup flutter desktop on windows

Terry  Tremblay

Terry Tremblay

1598396940

What is Flutter and why you should learn it?

Flutter is an open-source UI toolkit for mobile developers, so they can use it to build native-looking** Android and iOS** applications from the same code base for both platforms. Flutter is also working to make Flutter apps for Web, PWA (progressive Web-App) and Desktop platform (Windows,macOS,Linux).

flutter-mobile-desktop-web-embedded_min

Flutter was officially released in December 2018. Since then, it has gone a much stronger flutter community.

There has been much increase in flutter developers, flutter packages, youtube tutorials, blogs, flutter examples apps, official and private events, and more. Flutter is now on top software repos based and trending on GitHub.

Flutter meaning?

What is Flutter? this question comes to many new developer’s mind.

humming_bird_dart_flutter

Flutter means flying wings quickly, and lightly but obviously, this doesn’t apply in our SDK.

So Flutter was one of the companies that were acquired by **Google **for around $40 million. That company was based on providing gesture detection and recognition from a standard webcam. But later when the Flutter was going to release in alpha version for developer it’s name was Sky, but since Google already owned Flutter name, so they rename it to Flutter.

Where Flutter is used?

Flutter is used in many startup companies nowadays, and even some MNCs are also adopting Flutter as a mobile development framework. Many top famous companies are using their apps in Flutter. Some of them here are

Dream11

Dream11

NuBank

NuBank

Reflectly app

Reflectly app

Abbey Road Studios

Abbey Road Studios

and many more other apps. Mobile development companies also adopted Flutter as a service for their clients. Even I was one of them who developed flutter apps as a freelancer and later as an IT company for mobile apps.

Flutter as a service

#dart #flutter #uncategorized #flutter framework #flutter jobs #flutter language #flutter meaning #flutter meaning in hindi #google flutter #how does flutter work #what is flutter

Punith Raaj

1640672627

Flutter Hotel Booking UI - Book your Stay At A New Hotel With Flutter - Ep1

https://youtu.be/-tHUmjIkGJ4
Flutter Hotel Booking UI - Book your Stay At A New Hotel With Flutter - Ep1
#flutter #fluttertravelapp #hotelbookingui #flutter ui design 

In this video, I'm going to show you how to make a Cool Hotel Booking App using Flutter and visual studio code. 

In this tutorial, you will learn how to create a Splash Screen and Introduction Screen, how to implement a SmoothPageIndicator in Flutter. 

🚀 Nice, clean and modern Hotel Booking #App #UI made in #Flutter 

⚠️ IMPORTANT: If you want to learn, I strongly advise you to watch the video at a slow speed and try to follow the code and understand what is done, without having to copy the code, and then download it from GitHub. 

► Social Media 

    GitHub: https://github.com/Punithraaj 

    LinkedIn: https://www.linkedin.com/in/roaring-r...

    Twitter: https://twitter.com/roaringraaj

    Facebook: https://www.facebook.com/flutterdartacademy

I hope you liked it, and don't forget to like,comment, subscribe, share this video with your friends, and star the repository on GitHub! 

⭐️ Thanks for watching the video and for more updates don't forget to click on the notification.⭐️Please comment your suggestion for my improvement. ⭐️Remember to like, subscribe, share this video, and star the repo on Github :)Hope you enjoyed this video! If you loved it, you can Buy me a coffee : https://www.buymeacoffee.com/roaringraaj

#flutter riverpod #flutter travel app #appointment app flutter #morioh

Adobe XD plugin for Flutter with CodePen Tutorial

Recently Adobe XD releases a new version of the plugin that you can use to export designs directly into flutter widgets or screens. Yes, you read it right, now you can make and export your favorite design in Adobe XD and export all the design in the widget form or as a full-screen design, this can save you a lot of time required in designing.

What we will do?
I will make a simple design of a dialogue box with a card design with text over it as shown below. After you complete this exercise you can experiment with the UI. You can make your own components or import UI kits available with the Adobe XD.

#developers #flutter #adobe xd design export to flutter #adobe xd flutter code #adobe xd flutter code generator - plugin #adobe xd flutter plugin #adobe xd flutter plugin tutorial #adobe xd plugins #adobe xd to flutter #adobe xd tutorial #codepen for flutter.

punith raj

1642514982

Flutter Hotel Booking UI - Book your Stay At A New Hotel - Ep3

Flutter Hotel Booking UI - Book your Stay At A New Hotel - Ep3

In this video, I'm going to show you how to make a Cool Hotel Booking App using Flutter from scratch.

In this Episode , you will learn how to create a Custom Navigation Bar for Navigating between Screen.

🚀 Nice, clean and modern Hotel Booking #App #UI made in #Flutter

⚠️ IMPORTANT: If you want to learn, I strongly advise you to watch the video at a slow speed and try to follow the code and understand what is done, without having to copy the code, and then download it from GitHub.

Starter Project : https://github.com/Punithraaj/Flutter_Hotel_Booking_UI/tree/Episode-2

► Timestamps 

0:00 Intro 

0:15 Custom Bottom Navigation Screen 

07:26 Tab Button

► Social Media 

GitHub: https://github.com/Punithraaj/Flutter_Hotel_Booking_UI

LinkedIn: https://www.linkedin.com/in/roaring-r...

Twitter: https://twitter.com/roaringraaj

Facebook: https://www.facebook.com/flutterdartacademy

► Previous Episode : https://youtu.be/A0QdZPpMBb0

► Playlist: https://www.youtube.com/playlist?list=PL6vcAuTKAaYdboy1OOxnMekOEuRzHUvR6

I hope you liked it, and don't forget to like,comment, subscribe, share this video with your friends, and star the repository on GitHub! 

⭐️ Thanks for watching the video and for more updates don't forget to click on the notification. ⭐️Please comment your suggestion for my improvement. ⭐️Remember to like, subscribe, share this video, and star the repo on Github :)

Hope you enjoyed this video!If you loved it, you can Buy me a coffee : https://www.buymeacoffee.com/roaringraaj

#morioh #flutter travel app #appointment app flutter #flutter #fluttertravelapp #hotelbookingui #flutter ui design #book your stay at a new hotel app #hotel booking app flutter #flutter travel ui tutorial

https://youtu.be/cCion2y7hNE