The first step is crack a close wifi network with WifiCrack or similar:
See the app here
Next, we can perform a portscan with AndroScan:
See AndroScan Here
Once you have identified livesystems and their udp and tcp services, you can connect to the services detected with several applications, or launch a DoS attack, I have ported the SMB DoS exploit to Android, it can be installed from here:
Happy hacking from Android.