![]() ![]() If I’d known how it would turn out, I would have chosen another programming route, but never mind, it still works as a proof of concept. A run aircrack-ng against output files using the supplied dictionary file a pair up ALL message 1s that precede the chosen message 2 (multiple output files) f seek first message from start of capture working forwards N nth first packet of 4-way handshake that precedes the chosen second packet (default 1) M mth second packet of 4-way handshake (default 1) A tool called “wpaclean” (which is included in Backtrack) tidies up four-way handshake captures but, in my experiments, it didn’t always work so I wrote an alternative clean-up script, called William, that gives you more control. If Aircrack picks packets from different 4-way handshake exchanges then the passphrase will not be found, even if it’s in the dictionary. ![]() Essentially Aircrack hasn’t parsed the handshake from the capture correctly because there is too much “noise”. One possibility for this is noted on the (excellent) Aircrack website –. If you’ve ever tested Aircrack against a packet capture containing a handshake from a network whose WPA/WPA2 passphrase is known, you may have sometimes frowned at the “Passphrase not in dictionary” message. ![]()
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