ram dump image using qpst configuration lg v20

The first application is a mobile wallet application that allows customers to easily pay for services without having to carry cash around. To demonstrate the usefulness of memory analysis lets look at two finance orientated apps. To get to the interesting stuff we can use the command-line.ģ.) strings and grep the. Scrolling through you will start seeing the values of variables stored in memory. You’ll immediately see that the applications UI objects and other base classes are in the first part of the file. Once DDMS has done it’s magic you’ll have a window pop up with the memory contents for your viewing pleasure. * To convert a android hprof file to java hprof use the hprof converter found in the android-sdk/platform-tools directory: hprof-conv This allows you to open the hpof file in any java memory viewer. * Set your DDMS “HPROF action” option to “Open in Eclipse” – this ensures that the dump file gets converted to standard java hprof format and not the Android version of hprof. You can also cause a heap dump by issuing the kill command:īut there is an easier way, use the official Android debugging tools… Dalvik Debug Monitor Server ( DDMS), - “provides port-forwarding services, screen capture on the device, thread and heap information on the device, logcat, process, and radio state information, incoming call and SMS spoofing, location data spoofing, and more.” Once DDMS is set up in Eclipse, it’s simply a matter of connecting to your emulator, picking the application you want to investigate and then to dump the heap (hprof).ġ.) Open DDMS in Eclipse and attach your device/emulator

There’s even a method for it in the android.os.Debug library: android.os.Debug.dumpHprofData(String filename). Android being android, free and open, numerous ways of dumping the contents of the application heap exist. Each application on android is run in the Dalvik VM and is allocated it’s own heap space.

The technique that has given me most joy is memory analysis. Taking inspiration from Vlad’s post I’ve been playing around with alternate means of viewing traffic/data generated by Android apps.

Ram dump image using qpst configuration lg v20