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MBCPApp Patcher for MB Bank

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Lightweight "open source" tool for patching MB Bank Flutter (Android) app for rooted user, mostly written in Bash, made possible by Cuynu (as a loser) with love <3

Introduction

  • This project was made to remove or limit annoying features & root detection & accessibility detection that implemented by the development team of "MB Bank" Android app with additional feature such as custom themes. It's not PoC project.
  • MBCP (MBBank CorePatch) are closed source before, and many people don't like it cuz worry about security & privacy issues.
  • In order to support community and make MBCP open source, We spend days to rewritten whole MBCPApp patches in Bash and open it so you can patch it yourself on (Bare metal, not WSL) Linux environment (where we used to patch MBCP)

Patches list :

📦 MB Bank : com.mbmobile

⚙️ Patch 📜 Description 🏦 Suggested version
Autopatch strings Modify the strings in-app within libapp.so, and also fixes some translation typo in-app. v6.4.0 ~ v6.4.55
Change app logo Change the app logo with set of icons. v6.4.0 ~ v6.4.55
Force portrait screen Force the screen always portrait on app, espcially when launching. v6.4.0 ~ v6.4.55
Remove invoke to mbshield Make app don't invoke to mbshield when opening (MainActivity) and (MBBHomeWidgetQR) only v6.4.22 ~ v6.4.55
Remove bulit-in fonts Remove app font and force to use device font for most app components. v6.4.0 ~ v6.4.55
Modify app theme Modify the app theme in app from original one to others. Currently have MBClassic and SemiPriority. v6.4.30 ~ v6.4.55
Remove garbage permission and activities Removes tracking permission & activities from app. v6.4.0 ~ v6.4.55
Remove eMBee Removes eMBee options in app, alongside with Customer support. v6.4.43 ~ v6.4.55
Revert old eMBee logo Revert old eMBee logo, specially on product consultation options. v6.4.53 ~ v6.4.55
Remove animated QR background Remove the animated QR background on bottom navigation bar and replace with white background. v6.4.43 ~ v6.4.55
Restore old registration resources Restore old resources on onboarding page. v6.4.48 ~ v6.4.55
Remove banner & MiniApp Removes the banner and MiniApp on homeLanding page when logged in. v6.4.43 ~ v6.4.55
Bypass accessibility & malicious apps check Remove the restriction of using the app when an app using accessibility service or "malicious apps" like (HideMyAppList) installed. v6.4.25 ~ v6.4.54
Hide VTAP root detection activity & dialog Hide the old root detection screen and dialog showing "Device is rooted". v6.4.0 ~ v6.4.55
Remove new root detection Remove the new Zimperium (ZDefend) root detection from app. v6.4.15 ~ v6.4.55
Add modified resources Adds the specific strings for MBCP on eKYC phase, and modify the DigiBank logo. v6.4.0 ~ v6.4.55
Bypass signature check Not implemented v6.4.0 ~ v6.4.21
Bypass 1200 error Workaround for 1200 error that happening on original MB app with specific version, now discontinued. v6.4.45

Requirements

  • Actual unix environment or any compatible Linux distro (Arch Linux based recommended)
  • Little knowledge about bash commands
  • git installed
  • java or jdk-openjdk installed
  • For macOS, you need openjdk and gnu-sed installed with brew (both need to add to PATH first!) like this below
# macOS on Intel/AMD x86

PATH="/usr/local/opt/gnu-sed/libexec/gnubin:$PATH"
sudo ln -sfn /usr/local/opt/openjdk/libexec/openjdk.jdk /Library/Java/JavaVirtualMachines/openjdk.jdk

# macOS on Apple Silicon
PATH="/opt/homebrew/opt/gnu-sed/libexec/gnubin:$PATH"
sudo ln -sfn /opt/homebrew/opt/openjdk/libexec/openjdk.jdk /Library/Java/JavaVirtualMachines/openjdk.jdk

Usage

  • Go to home directory, then clone repository first
cd ~
git clone https://gitlab.com/cuynu/mbbpatch.git
cd ~/mbbpatch/MBCPApp

  • Since MB Bank are now using split APK (*.apks) since v5.3 (135) so you have to convert it to regular APK first

  • Grab MB Bank apks from eMBee APKs and copy it to ~/mbbpatch/MBCPApp/mbapk

  • Run bash mbcpapp.sh script

cd ~/mbbpatch/MBCPApp
./mbcpapp.sh
  • Download necessary tools first with Download tools function (otherwise other function are unlikely to work!)
  • Convert apks to apk first using Convert apks to apk function
  • Unpack apk with Unpack apk function
  • Check if MBShield present on unpacked APK with Check MBShield function (if MBShield present then you may need to extract assets from Android device with Extract assets [ROOT])
  • After extracted assets (if MBShield present), use Patch App function and select the patches you want to apply to unpacked app
  • When done, use Repack APK function to recompile patched app
  • Patched app will be MBCP_Flutter_SelfPatched.apk on ~/mbbpatch/MBCPApp/mbcpapp_apk/
  • Install it to your device (requires MBCP Helper / CorePatch ) with enabled "Disable digest verify" option.
  • Profit :)

TODO

External projects

MBCPApp Patcher project won't be possible without those external projects !!