I tried cracking a wifi password that uses WPA 2 PSK encryption. The network is using MAC filtering as a security measure. How can I crack the password of the same network?

closed as unclear what you're asking by Pascal, S.L. Barth, Anders, schroeder Mar 2 '17 at 12:54

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    Are you asking how to do MAC spoofing? Why do you need to spoof a MAC to crack a wifi password? – schroeder Mar 2 '17 at 8:11
  • Actually the wifi network to which im trying to do this crack is using MAC filtering for its security.So specific devices whose MAC addresses are added previously can only connect to the network.So if i spoof my MAC address with MAC of a connected device,can i successfully connect to that network.Sorry,if my assumption is completely wrong. – PentestLover Mar 2 '17 at 8:14
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    I'm uncomfortable with this kind of question. It's asking for direct help in cracking someone's wifi network. – Pascal Mar 2 '17 at 9:15
  • Its not for cracking someone's network.Its my own network.My companie's network.I have the duty to test security of wifi in my company.Harming others is not my area of interest. – PentestLover Mar 2 '17 at 9:21
  • @PentestLover then I'm still confused: do you want to know how to change your MAC? Why do you need to crack the password if you can already connect? What is your question? – schroeder Mar 2 '17 at 10:19

Just use a tool like macchanger :

ifconfig <interface> down # Take it down before messing with the address
macchanger -m xx:yy:zz:aa:bb:cc
ifconfig <interface> up

In short, these are two separate things:

  • in order to crack the WPA2 PSK, you just need to capture the authentication 'handshake'. One way of doing that is passively sniffing until you get what you need. Another way is to force a deauth, in order to force a node to re-authenticate - doing that will generally involve spoofing the AP or client MAC.

  • once you have cracked the PSK, you will need to spoof your MAC to get around MAC-filtering.

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