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Home - Wireless Cracking - Pre-calculated PMK for a given SSID


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kangaroot

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Wed, 05 Sep 2018 @ 10:27:12

I apologise in advance for being thick, but I cannot seems to understand the benefit of pre-calculating PMK for a given SSID and how this method could speed up the cracking process in overall.

I'd appreciate if anyone can explain in simple words or share link with explanation.

As far as I understand this: TIME for generating PMK for given SSID + TIME for later cracking using pre-generated PMK = TIME cracking without pre-generating PMK.


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kangaroot

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Wed, 05 Sep 2018 @ 10:36:30

Both SSIDs and used wordlists for cracking are normally not repeated in the real world so cannot be reused.


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soxrok2212

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Wed, 05 Sep 2018 @ 12:49:22

If you’re doing a pen test out in the field and don’t have access to a powerful rig, you can ask the client in advance for the SSID and generate PMKs ahead of time, which can be run very fast even on a low power machine... like a laptop.



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freeroute
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Wed, 05 Sep 2018 @ 13:28:13

There are commonly used SSIDs, like: ASUS, FREE WI-FI, CONFERENCE_WIFI, dlink, etc.
You can generate PMK list for these AP to save time.


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kangaroot

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Wed, 05 Sep 2018 @ 14:57:45

Like I thought, it has a pretty minimum use for cracking in live environment, unless you pentesting public businesses, like coffee shops, etc.



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