Info Reaver Recovers WPS Pin But No PSK

It is important to realise that you do not need the PSK password to authenticate with the AP through the following process.

You need a few things
1. wpa_supplicant
2. latest compat wireless

Step 1: Create a wpa_supplicant.conf in:

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/etc/wpa_supplicant.conf

Example

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ctrl_interface=/var/run/wpa_supplicant
ctrl_interface_group=0
update_config=1

Step 2: Start wpa_supplicant in daemon mode:

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sudo wpa_supplicant -Dwext -iwlan0 -c/etc/wpa_supplicant.conf –B

Step 3: Run

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sudo wpa_cli

To verify it is working with the command 'status'. You should see:

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wpa_state=INACTIVE

Step 4: Add the AP's BSSID or MAC address and 8 digit Pin:

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wps_reg xx:xx:xx:xx:xx:xx NNNNNNNN

Wait for an OK, wait a bit longer until wpa_supplicant picks up the BSSID association and tries to negotiate with the PSK key.

You want to see is CTRL-EVENT-CONNECTED, which will indicate the PIN was accepted and now you are associated with the AP.

You can exit with:

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sudo exit wpa_cli

From there you could run dhclient on wlan0 and you would be offered an IP from the AP assuming DHCPd is enabled on the AP. Finally, type the following in Terminal:

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save

which will update your wpa_supplicant.conf file with a static configuration of the new network

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cat /etc/wpa_supplicant.conf

If all went well, you should have a line under this new network titled 'psk'.

Original tutorial from Ryan Nacht at Reaver WPS @ Google Code