the application crashes when it includes native code

[zyqu1990]

Hi,

Nice work! Thank you for sharing! I tried to analyze some applications with native code included. However, all of them crashed on the device with the following logs. And I tried to verify them against both a physical device and emulator without system modification; they did not crash.

Thanks

java.lang.ExceptionInInitializerError
E/AndroidRuntime( 1248): at com.bangcle.protect.Util.CopyBinaryFile(Util.java:558)
E/AndroidRuntime( 1248): at com.bangcle.protect.Util.runAll(Util.java:751)
E/AndroidRuntime( 1248): at cow.draw.animaltattoo.tools.MApplication.onCreate(ApplicationTemplate.java:50)
E/AndroidRuntime( 1248): at android.app.Instrumentation.callApplicationOnCreate(Instrumentation.java:999)
E/AndroidRuntime( 1248): at android.app.ActivityThread.handleBindApplication(ActivityThread.java:4151)
E/AndroidRuntime( 1248): at android.app.ActivityThread.access$1300(ActivityThread.java:130)
E/AndroidRuntime( 1248): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1255)
E/AndroidRuntime( 1248): at android.os.Handler.dispatchMessage(Handler.java:99)
E/AndroidRuntime( 1248): at android.os.Looper.loop(Looper.java:137)
E/AndroidRuntime( 1248): at android.app.ActivityThread.main(ActivityThread.java:4745)
E/AndroidRuntime( 1248): at java.lang.reflect.Method.invokeNative(Native Method)
E/AndroidRuntime( 1248): at java.lang.reflect.Method.invoke(Method.java:511)
E/AndroidRuntime( 1248): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:786)
E/AndroidRuntime( 1248): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:553)
E/AndroidRuntime( 1248): at dalvik.system.NativeStart.main(Native Method)
E/AndroidRuntime( 1248): Caused by: java.lang.UnsatisfiedLinkError: unknown failure
E/AndroidRuntime( 1248): at java.lang.Runtime.loadLibrary(Runtime.java:370)
E/AndroidRuntime( 1248): at java.lang.System.loadLibrary(System.java:535)
E/AndroidRuntime( 1248): at com.bangcle.protect.ACall.(ACall.java:30)
E/AndroidRuntime( 1248): ... 15 more

[pjlantz]

Thanks.

The problem is that Taintdroid which Droidbox is based on modified the
native loader to not load native libraries.
I was looking through the source code and the following changes to the
Dalvik source code enables it:

https://github.com/TaintDroid/android_platform_dalvik/blob/taintdroid-4.1.1_r6/vm/
Native.cpp

in the function dvmLoadLibraryCode at line 318.

at line 332 to 342 they simply check if the native code belongs to the
system and not a third-party app.
If it is a third-party native code then the check fails. Removing the lines
332 to 342 and then you should be able to run apps with native code.

2015-08-20 20:32 GMT+02:00 zyqu1990 notifications@github.com:

Hi,

Nice work! Thank you for sharing! I tried to analyze some applications
with native code included. However, all of them crashed on the device with
the following logs. And I tried to verify them against both a physical
device and emulator without system modification; they did not crash.

Thanks

java.lang.ExceptionInInitializerError
E/AndroidRuntime( 1248): at
com.bangcle.protect.Util.CopyBinaryFile(Util.java:558)
E/AndroidRuntime( 1248): at com.bangcle.protect.Util.runAll(Util.java:751)
E/AndroidRuntime( 1248): at
cow.draw.animaltattoo.tools.MApplication.onCreate(ApplicationTemplate.java:50)
E/AndroidRuntime( 1248): at
android.app.Instrumentation.callApplicationOnCreate(Instrumentation.java:999)
E/AndroidRuntime( 1248): at
android.app.ActivityThread.handleBindApplication(ActivityThread.java:4151)
E/AndroidRuntime( 1248): at
android.app.ActivityThread.access$1300(ActivityThread.java:130)
E/AndroidRuntime( 1248): at
android.app.ActivityThread$H.handleMessage(ActivityThread.java:1255)
E/AndroidRuntime( 1248): at
android.os.Handler.dispatchMessage(Handler.java:99)
E/AndroidRuntime( 1248): at android.os.Looper.loop(Looper.java:137)
E/AndroidRuntime( 1248): at
android.app.ActivityThread.main(ActivityThread.java:4745)
E/AndroidRuntime( 1248): at java.lang.reflect.Method.invokeNative(Native
Method)
E/AndroidRuntime( 1248): at
java.lang.reflect.Method.invoke(Method.java:511)
E/AndroidRuntime( 1248): at
com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:786)
E/AndroidRuntime( 1248): at
com.android.internal.os.ZygoteInit.main(ZygoteInit.java:553)
E/AndroidRuntime( 1248): at dalvik.system.NativeStart.main(Native Method)
E/AndroidRuntime( 1248): Caused by: java.lang.UnsatisfiedLinkError:
unknown failure
E/AndroidRuntime( 1248): at java.lang.Runtime.loadLibrary(Runtime.java:370)
E/AndroidRuntime( 1248): at java.lang.System.loadLibrary(System.java:535)
E/AndroidRuntime( 1248): at com.bangcle.protect.ACall.(ACall.java:30)
E/AndroidRuntime( 1248): ... 15 more

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