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Behind the scenes. From a complete 4way handshake hcxpcapngtool can convert up to 7 MESSAGE PAIRS (usually 3 ; 7 if the SNONCE of the M4 is not zeroed). Running with default options, if the EAPOL-Key is not exceeded and the replaycount matches (M1 = RCx, M2 = RCx, M3 = RCx+1, M4 = RCx +1), converts only one of these MESSAGE PAIRS. MESSAGE PAIR M1M2 E2 (challenge) from packet 3 and 4 MESSAGE PAIR M2M3 E2 (challenge / authorized) from packet 4 and 5 MESSAGE PAIR M2M3 E3 (authorized) from packet 4 and 5 If the SNONCE is not zeroed: |
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Convert an entire 4way handshake (and if available a PMKID too) to a hash file.
Example dump file
fb7272_wpa2_ABCDEFGH.pcap.zip
Examine the dump file:
Use hcxpcapngtool --all to convert to a hash file:
All available MESSAGE PAIRs are stored to the hash file:
hashcat tries to recover the PSK from these hashes:
Important note:
On a full 4way handshake, the MESSAGE PAIRs M1M2 E2 and M2M3 E2 are always the same!
run hashcat now:
Both different MICs should be verified:
and the hashes should be deleted from the hash file!
The same applies to JtR:
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