Results 1 to 4 of 4

Thread: [Reaver][Kali 2016] Reaver Association Issues (Code 18)

  1. #1
    Join Date

    Question [Reaver][Kali 2016] Reaver Association Issues (Code 18)

    So every once and awhile my room-mate and I like to have little contests. One of our favorites is a penetration contest on our home AP after the other makes some administration changes to the AP.

    The only rule we have is:
    It has to be breakable. IE: no turning off WPS etc.

    Either way, this time I'm up. I've been beating my head against it for a few days now and can't seem to break-into whatever he changed.

    Reaver will fail to associate with the AP 100% of the time. Good power rating, poor power rating, does not matter.

    So the next thing I tried was to associate using aireplay-ng. However aireplay will just spam the following:
    "Association Denied (Code 18)"

    There is not a whole lot of info on the above code (Code 18) that google turned up, however after some more digging it seems to occur when the AP is broadcasting in a mode that the requesting station can't understand.

    If I'm right about this, I would guess that he switched the wireless-mode to 802.11ac only. I might be way off with that hypothesis, so anyone can feel free to correct me, but from what I understand of the above error that seems to be a reasonable suspicion. Unfortunately, my wireless card is 802.11n (Qualcomm atheros AR9285 - ath9k driver) and therefore can't associate with a network that is sending only ac signal.

    The only card I have that is 802.11ac compatible is the card in my other laptop, a 2015 Macbook Pro. A Broadcom BCM43xx card that as far as I am aware can't be configured for monitor mode/injection anyway. (?)

    Desperately looking for some wisdom and advice here! Am I on the completely wrong track? Are there any (preferably inexpensive) 802.11ac cards that are compatible with aircrack/reaver? Is it possible to use my internal Broadcom card in my Macbook?



    Doh - 802.11ac can only exist on the 5gz band. Which means no matter what is being broadcast on the 2,4ghz band I should be able to connect! Completely at a loss here. Is Mac Filtering a possible cause of this? I have been using airodump-ng to scan the target bssid for any stations but haven't had any turn up for me to spoof the MAC of.

    EDIT 2:

    Perhaps (?) the AP is broadcasting only 802.11n and is doing so over the 5gz band? But if that was the case, I don't think I'd see the router in airodump-ng (which I do).
    Last edited by h4ck0ry; 2016-02-26 at 21:05.

  2. #2
    Join Date
    He set it to 802.11n only, didn't he?

  3. #3
    Join Date
    Speculations aside, I ran into very similar behavior (in wifite) on a kali box; while wifite associated correctly on nexus7 with the same alfa, running Nethunter; to the same AP. I downgraded libpcap to an earlier version and it worked. I know this isn't a proper fix but a simple band-aid, but something else you could take a look into.
    Last edited by clone; 2016-07-06 at 04:37. Reason: Failure to associate

  4. #4
    Join Date
    Thanks for the tip. I'm assuming you are referring to Kali 16.1?
    What version of libpcap did you downgrade to?

Similar Threads

  1. Macchanger and Reaver association problem in Kali 2
    By magatyb in forum TroubleShooting Archive
    Replies: 3
    Last Post: 2016-04-16, 15:21
  2. Replies: 7
    Last Post: 2015-05-09, 20:00

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts