I was pulling the .apk files from the device using the following command:
./adb pull /data/app/com.example.tracker-1.apk
When I tried using the same command for the encrypted app as below:
./adb pull /mnt/asec/net.stfj.spelltower-1/pkg.apk
I get the following message
failed to copy '/mnt/asec/net.stfj.spelltower-1/pkg.apk' to './pkg.apk': Permission denied
The device is not rooted and the app is a paid app. The intention of pulling is not piracy but to understand the library and architecture of a set of apps. Is there a way I can retrieve that .apk file?