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there are some image for help

hello?

Thank you so much for investigation.

Background

Yes. you are right. The package name is "co.mona.android". On 20 Dec, we disabled in the advanced setting after we hear many crash reports from users. After disabling it, the error disappeared on some devices, while others persisted. We waited for almost 1 week to see if there was delay as caches. Most users also reported that after clearing Google Play app's cache and installing my app immediately solve the problem. However, if they waited a while before download my app (I assume that Google Play app will auto update itself), the app will crash.

Nevertheless, the crash rate continues to climb. Therefore, I decided to release a new app version without DexProtector on 26 Dec. This new app has reduced the app crash rate, but I would like to restore DexProtector as soon as possible.

Some findings

1. DexProtector expects the full app download without tampering. The app will crash with java.lang.RuntimeException: DP: 714 if it is believed to be tampered.
2. When "play as you download" is enabled, the app size after download usually is very little. it grows only after the app is opened.
3. It seems like even though the setting has disabled it since 20 Dec, I am still able to reproduce the app crash if I install the app version with dexProtector. I tried clearing app data after install was completed, but app crash still happened. I tested with following devices:

• Pixel 7 / Android OS 14 / Google Play version: 38.8.28-29[0][PR] 592366865
• OnePlus 9 5G/ Android OS 12 / Google Play vesion: 38.8.28-29[0][PR] 592366865

The stacktrace on app crash:

Exception java.lang.RuntimeException:
  at android.app.ActivityThread.handleBindApplication (ActivityThread.java:7624)
  at android.app.ActivityThread.-$$Nest$mhandleBindApplication
  at android.app.ActivityThread$H.handleMessage (ActivityThread.java:2400)
  at android.os.Handler.dispatchMessage (Handler.java:106)
  at android.os.Looper.loopOnce (Looper.java:226)
  at android.os.Looper.loop (Looper.java:313)
  at android.app.ActivityThread.main (ActivityThread.java:8762)
  at java.lang.reflect.Method.invoke
  at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run (RuntimeInit.java:604)
  at com.android.internal.os.ZygoteInit.main (ZygoteInit.java:1067)
Caused by co.mona.android.app.MessageGuardException_RFA6IDcxNCBbMjAyMzEyMDQtMjAyMzEyMjExNDQwIGI3OmFybTY0LXY4YSAzMyBzYW1zdW5nL2ExNHhtY3MvYTE0eG06MTMvVFAxQS4yMjA2MjQuMDE0L0ExNDZXVkxTNUJXSzU6dXNlci9yZWxlYXNlLWtleXMgYmxvY2tlZF0: DP: 714
  at co.mona.android.app.ProtectedMonacoApplication.lfk
  at co.mona.android.app.ProtectedMonacoApplication.onCreate
  at android.app.Instrumentation.callApplicationOnCreate (Instrumentation.java:1266)
  at android.app.ActivityThread.handleBindApplication (ActivityThread.java:7619)
Caused by java.lang.RuntimeException: DP: 714
  at co.mona.android.app.ProtectedMonacoApplication.qHkwy
  at java.lang.reflect.Method.invoke
  at co.mona.android.app.ProtectedMonacoApplication$R$array.lwmmzjzt
  at co.mona.android.app.ProtectedMonacoApplication$R$array.xI
  at co.mona.android.app.ProtectedMonacoApplication.qHkwy
  at co.mona.android.app.ProtectedMonacoApplication.onCreate

Questions

1. Is it possible that for "Play as you download" setting will take a few weeks to reach to some devices?
2. I am using app size (Storage under App info) as the indicator to determine if it is still under "Play as you download". Is there any other way to check if it is new/old setting?

Once again, thank you so much for answering. :pray

Thank you for the info. It is indeed strange.

Run the command "adb dumpsys shell incremental" and provide the full results here

When I run adb dumpsys shell incremental, it is in error. But when i run adb shell dumpsys incremental, it works. I ran on both devices. The results are similar, so i will just upload it for pixel6.

We collect data on old app (version name: 3.176.3, version code: 1003246). Direct link: https://play.google.com/apps/test/co.mona.android/1003246

Before installing from Google Play

Incremental is ENABLED
IncFs features: 0x7
Incremental dir: /data/incremental
Mounts (0): {
}
Sorted binds (0): {
}

After installing from Google Play

Behaviour: The app crashed upon launch. On logcat, we could see the java.lang.RuntimeException error.

Incremental is ENABLED
IncFs features: 0x7
Incremental dir: /data/incremental
Mounts (2): {
  [14]: {
    reference to mountId: 13
  }
  [13]: {
    mountId: 13
    root: /data/incremental/MT_data_app_vmdl163
    metrics instance name: MT_data_app_vmdl163e95fb3cb-73fc-4891-8dcf-7bce10202b16
    nextStorageDirNo: 2
    flags: 31
    startLoading: 94s
    dataLoader: {
      currentStatus: 6
      currentStatusTs: 93328477mcs
      targetStatus: 4
      targetStatusTs: 94513700mcs
      health: {
        path: /data/incremental/MT_data_app_vmdl163/mount
        base: -9223366675245519mcs (-1)
        blockedTimeoutMs: 2000
        unhealthyTimeoutMs: 7000
        unhealthyMonitoringMs: 60000
        lastPendingReads: 
        bind: 94s ago (delay: 0s)
      }
      dataLoaderParams: {
        type: INCREMENTAL
        packageName: com.android.vending
        className: com.google.android.finsky.dataloader.ProductionDataLoaderService
        arguments: CAESD2NvLm1vbmEuYW5kcm9pZBj2wqPV46O+y68BIP2t3ODg/Z+xlgE=

      }
    }
    storages (2): {
      [14] -> [/data/incremental/MT_data_app_vmdl163/mount/st_14_1] (100 % loaded)(Full) 
      [13] -> [/data/incremental/MT_data_app_vmdl163/mount/st_13_0] (100 % loaded)(Full) 
    }
    bindPoints (1): {
      [/data/app/~~Db7YCyPV4SMo_XXXf83MgA==]->[14]:
        savedFilename: .mountpoint.dffaf308-bf9a-4021-9799-50830a9740e0
        sourceDir: /data/incremental/MT_data_app_vmdl163/mount/st_14_1
        kind: Permanent
    }
    incfsMetrics: {
      readsDelayedMin: 0
      readsDelayedMinUs: 0
      readsDelayedPending: 0
      readsDelayedPendingUs: 0
      readsFailedHashVerification: 0
      readsFailedOther: 0
      readsFailedTimedOut: 0
    }
    lastReadError: {
      No read errors.
    }
  }
}
Sorted binds (1): {
    [/data/app/~~Db7YCyPV4SMo_XXXf83MgA==]->[14]:
      savedFilename: .mountpoint.dffaf308-bf9a-4021-9799-50830a9740e0
      sourceDir: /data/incremental/MT_data_app_vmdl163/mount/st_14_1
      kind: Permanent
}

We do the same version by downloading the universal apk from Google Play console. We install it using adb command.

Before installing from adb command

Incremental is ENABLED
IncFs features: 0x7
Incremental dir: /data/incremental
Mounts (0): {
}
Sorted binds (0): {
}

After installing from adb command

The app is able to launch. We could see the toast message that we set in our app to download app from Google Play to our user. No error detected.

Incremental is ENABLED
IncFs features: 0x7
Incremental dir: /data/incremental
Mounts (0): {
}
Sorted binds (0): {
}

2. Take a bugreport

I run adb bugreport and attached the two bug reports (Pixel 6 and One Plus)

3. Provide a version of your app that does include dexprotector

Please download from Google play. Our app is signed by Google key as well. To reproduce, it is simple, the app will crash upon launch. Direct link: https://play.google.com/apps/test/co.mona.android/1003246

Once again, thank you so much for your time and effort. Really appreciate for looking into it.

Thank you.

I am not sure about the detailed of security mechanism. However, based on the documentation,

DexProtector systematically secures your package, applying its protection mechanisms at bytecode and native levels to classes, methods, strings, and resources, and integrating its Runtime Application Self-Protection engines automatically

I am not sure if giving APK here will be helpful in troubleshooting. I have downloaded the "Signed, universal APK" from Play store console and install it without any error.

After installing from adb command The app is able to launch. We could see the toast message that we set in our app to download app from Google Play to our user. No error detected.

The problem is with AAB download from Google Play. Whenever we launch the app, we always see app crash with DexProtector error ( java.lang.RuntimeException: DP: 714). I could not see your full email address. Would it possible for you to share the email address (you can email me at henry.thet@crypto.com) and I could invite you into tester so that the app could download from Google Play?

P.S. I will attach apk and aab anyway.

Thank you for the confirmation. Just want to clarify one more thing.

--incremental: Installs enough of the APK to launch the app while streaming the remaining data in the background.

Is it the same as "Play as you download" feature? If we have disabled in the advanced setting, the installation should not be incremental. Is that right? Does apk file installation work fine? It should show you a toast message to install from Google if it works well (app will not open, because we block it in our code).

Thank you.

We are working to temporarily disable those features from your app's installs while we figure out how to address the issue properly.

Thank you so much. Is this already disabled or should I wait for your message? Once again, thank you so much for helping out. :pray

Thank you so much for solving the issue. I have tested in my test devices and it works well too.

We will be evaluating and testing with next app release version and I will keep you posted. On second thought, would you like me to add you as internal test user so that you could get the build early? Please email me at "henry.thet@crypto.com" if you wish. Thank you.

Hi, I would like to let you that I have re-enabled dexprotector on my app today (app version: 3.181). Thank you so much for your help :pray