MBCPApp Patcher for MB Bank

Lightweight "open source" tool for patching MB Bank Flutter (Android) app for rooted user, mostly written in Bash, made possible by Cuynu without any use of AI.

• Licensed as MIT License : View license.

Notice

• The reMBCP project on GitHub is the garbage repository, which is confirmed that it will contains AI-generated code in the future and even bullying me like a dogshit. Avoid that ugly fork !
• STOP forking this project and fed to AI-tools as i don't like them. Any forks that is doing this thing is literally slowing down project development !!!
• PLEASE respect the author code !!!

DISCLAIMER

We are not responsible for any illegal action if criminal abuse this patch to do illegal things, since it's originally made for technical users only and not criminal.

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 features such as custom themes ability,etc. It's not PoC project.
• It's probably won't meet FOSS requirements due to containing some proprietary smali code (for example: hide VTAP patch)
• MBCP are closed source before, and many people don't like it cuz worry about security & privacy issues.
• In order to support community, we spend days to rewritten MBCP patches once again in Bash and open sourced it so you can patch yourself from original app on (Bare metal, not WSL) Linux environment
• Note : MBCP are "MBBank CorePatch" but shorter and MBCP or MBCPApp are the same thing as MBCP.

Proprietary code

• This project probably won't meet FOSS requirements due to contains proprietary code extracted from MB app that has been modified to bypass something else. That applies for following folder :

• 1. blob_patches/bypass_apptampering
• 2. blob_patches/noadjust_volume_sekyc
• 3. blob_patches/skip_maintainscreen
• 4. blob_patches/bypass_accessibility_applist
• 5. blob_patches/bypass_rootold
• 6. blob_patches/fix_df16211

• Under mbsig directory, its contain MB original dumped signature, which is necessary to make app works after patching process.

• Everything including that listed above code are all licensed under MIT license, it's can be considered as reverse engineered code :>

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 ~ v6.4.66
Block adjust volume on sEKYC	Prevent the device volume from being adjusted when entering eKYC activity.	v6.4.0 ~ v6.4.66
Bypass GW934 checksum	Bypass the GW934 error rolled-out from MB server-side which prevent MBCP users from logging in to app. Only use this after applied all your patch needs.	v6.4.64 ~ v6.4.66
Change app logo	Change the app logo with set of icons.	v6.4.0 ~ v6.4.67
Change widget background to dark	Change widget background to dark if you use MBBHomeWidget.	v6.4.0 ~ v6.4.67
Disable MB Membership	Disable the MB Membership badge below pfp and all of it's features.	v6.4.0 ~ v6.4.66
Force portrait screen	Force the screen always portrait on app, espcially when launching.	v6.4.0 ~ v6.4.67
Remove invoke to mbshield	Make app don't invoke to mbshield when opening (MainActivity) and (MBBHomeWidgetQR) only	v6.4.22 ~ v6.4.66
Remove MB Themes Store	Remove the MB Themes Store banner from Themes list, preventing access to MB Theme Store.	v6.4.28 ~ v6.4.67
Remove new zimperium check	Remove the new Zimperium (ZDefend) root detection from app. Picked up from Legacy Patch.	v6.4.60 ~ v6.4.66
Remove bulit-in fonts	Remove app font and force to use device font for most app components.	v6.4.0 ~ v6.4.67
Remove custom profile picture	Force the use of default profile picture instead of your current one on MB's server side.	v6.4.0 ~ v6.4.66
Modify app theme	Modify the app theme in app from original one to others. Currently have MBClassic and SemiPriority.	v6.4.30 ~ v6.4.66
Restore old 682 lib	Restore old v6.4.61 libapp.so to prevent enforced quockhanh theme changes on v6.4.62.	v6.4.62
Remove garbage permission and activities	Removes tracking permission & activities from app.	v6.4.0 ~ v6.4.67
Remove eMBee	Removes eMBee options in app, alongside with Customer support.	v6.4.43 ~ v6.4.66
Revert old eMBee logo	Revert old eMBee logo, specially on product consultation options.	v6.4.53 ~ v6.4.67
Remove animated QR background	Remove the animated QR background on bottom navigation bar and replace with white background.	v6.4.43 ~ v6.4.67
Remove banner & MiniApp	Removes the banner and MiniApp on homeLanding page when logged in.	v6.4.43 ~ v6.4.66
Remove VPN detection	Remove the VPN detection that warn users to turn it off on app bundle.	v6.4.52 ~ v6.4.66
Remove VNPAY VMB20	Remove the VNPAY Airplane related activities.	v6.4.55 ~ v6.4.66
Restore old registration resources	Restore old resources on onboarding page.	v6.4.48 ~ v6.4.66
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" (might have issues on some HyperOS ROMs).	v6.4.0 ~ v6.4.66
Legacy hide VTAP activity & dialog	Hide the first root detection screen with dialog showing "Device is rooted" but not bypassing it. (GW908 will present, unlike standard Hide VTAP root detection activity & dialog patch). Only use for some ugly ROMs which crashing with standard patch.	v6.4.53 ~ v6.4.66
Remove new root detection	Remove the new Zimperium (ZDefend) root detection from app. (Now requires workaround for v6.4.56+)	v6.4.15 ~ v6.4.58
Bypass new zimperium detection	Bypass the root check from Zimperium within app.	v6.4.56 ~ v6.4.63
Remove protection shield	Remove the MIC protection shield on profile picture and login screen. (not app protection)	v6.4.0 ~ v6.4.66
Remove app from launcher	Remove the app icon from launcher, and start with am start or with MBZDefend-Fix Action/Termux.	v6.4.0 ~ v6.4.67
Set targetSdkVersion to 34	Set the targetSdkVersion to 34 (Android 14).	v6.4.10 ~ v6.4.67
Add modified resources	Adds the specific strings for MBCP on eKYC phase, and modify the DigiBank logo.	v6.4.0 ~ v6.4.67
Add anime resources	Adds anime-related resources to some components inside app.	v6.4.45 ~ v6.4.67

Legacy patches

• Those patches are not implemented or outdated, which is used for discontinued MB app version.

📦 MB Bank : com.mbmobile

⚙️ Patch	📜 Description	🏦 Suggested version
Bypass signature check	Not implemented	v6.4.0 ~ v6.4.21
[TEST] Remove v6.4.56 root detection	New workaround that removes new Zimperium (ZDefend) root detection from app.	v6.4.56
Bypass 1200 error	Workaround for 1200 error that happening on original MB app with specific version, now discontinued.	v6.4.45

Requirements

• Any actual Linux x86_64 environment (Arch Linux based recommended) or Termux (not recommended)
• Termux/macOS/WSL may work but some function (eg : Unpack APK, sed_libapp on macOS) will not work and i don't want to spend more times just to supporting them. I only developing this project with Linux environment.
• Little knowledge about terminal commands
• android-tools wget for Arch/Fedora based and android-sdk-platform-tools for Debian based
• git installed
• java or jdk-openjdk installed
• figlet for showing banner (optional)
• xmlstarlet for reformatting AndroidManifest after unpacking

Usage

• Go to home directory, then clone repository first

cd ~
git clone https://git.disroot.org/mbcp/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 or Lotus Chat if you don't have access to Telegram 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 functions are unlikely to work!)
• Convert apks to apk first using Convert apks to apk function
• Unpack apk with Unpack apk function
• Use Patch App function and select the patches you want to apply to unpacked app except [Bypss GW934 checksum] patch
• When done, apply the [Bypass GW934 checksum] patch, then 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

• Bypass the new dex & libraries checksum for MB v6.4.67+

• Adapt new v6.4.67 zimperium structure

• Adapt new v6.4.68 trungthu theme

External projects

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

• apktool
• APKEditor
• MT Manager to handle APK signature scheme v2/v3 (in the past)
• Zhaxia CN for sticker packs (Add anime resources)

Contributors

• Cuynu - MBCP project author/maintainer
• fukiame - other improvements to project