I have researched a lot about reverse engineering WP8 apps but nothing seems to work for apps that are digitally signed (Yes, I am talking about Apps from Windows App Store)
XAPSpy works with Windows Phone 7 only and may be, with unsigned WP8 apps(but I am not sure on this part).
Some answers of StackExchange says that
Windows Phone App Analyzer can be used, but it doesn't seem to work with digitally signed apps.
Is it not possible at all, to reverse engineer WP8 apps collected from Store and perform security audit? TIA.