Asleap is a tool that exposes the weaknesses in Cisco’s LEAP protocol. It can read live from any wireless interface, can monitor a single channel, perform channel hopping to look for target networks running LEAP, will actively deauthenticate users on LEAP networks so they will be forced to reauthenticate, and more.
You can download it from the following link: https://packetstormsecurity.com/files/download/33027/asleap-1.0.tgz
Source: https://packetstormsecurity.com/files/33027/asleap-1.0.tgz.html