If you are looking for free or legal ways to conduct a wireless security audit:
Elcomsoft offers a Free Trial Version of their products for evaluation purposes. If you are looking for free or legal
The industry-standard open-source suite for auditing wireless networks. It is free, legal, and widely supported by the security community. If you are looking for free or legal
Attempts to recover WPA/WPA2-PSK passwords to test network resistance against brute-force and dictionary attacks. If you are looking for free or legal
A powerful, free, and open-source password recovery tool that also supports heavy GPU acceleration for WPA/WPA2 hashes.
Instead of looking for a crack, you can explore the legitimate features of the software or use free, open-source alternatives. About Elcomsoft Wireless Security Auditor