It is possible to hijack sessions only when WiFi is not using EAP, but it should work over any private networks (Open/WEP/WPA-PSK/WPA2-PSK). It's kind of like Firesheep for android. Maybe a bit easier to use (and it works on WPA2!). Please note that if webuser uses SSL this application won't work.
Legal notice: This application is for educational purposes only. Do not try to use it if it's not legal in your country. I do not take any responsibility for anything you do using this application. Use at your own risk
1. With your Wi-Fi on, install FaceNiff
2.Then run the app.
Download faceniff full version below: