Mercury is a framework that provides interactive tools that allow for dynamic interactions with the target applications running on a device. It is a free and open source framework for bug hunters to find vulnerabilities, write proof-of-concept exploits and play in Android. It also provides a platform for effective vulnerability hunting and exploitation on the Android operating system. Mercury was basically created to meet the need for a consolidated testing framework for Android.

Download
http://labs.mwrinfosecurity.com/tools/2012/03/16/mercury/downloads/