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Thread: upgrade broke airbase-ng

  1. #1
    Just burned his ISO
    Join Date
    Jan 2010
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    5

    Default upgrade broke airbase-ng

    I've upgraded the system via Synaptic: Reload/Mark all upgrade/Apply
    (available repositories were default BT4-final)

    This pointed the aircrack-ng package to be upgraded: the after-upgrade installed version is 1.0rc1-r1668-bt7.

    The adapter for mon0/at0 interfaces is:
    ID 0bda:8187 Realtek Semiconductor Corp. RTL8187 Wireless Adapter
    Since this upgrade, using "airbase-ng -c $AP_CHANNEL -e $AP_ESSID mon0" creates an AP with the required ESSID, but also broadcasting an empty ESSID.

    root@bt:~# iwlist wlan0 scan | grep -A 3 -B 3 AP
    Frequency:2.427 GHz (Channel 4)
    Quality=70/70 Signal level=-22 dBm
    Encryption keyff
    ESSID:"Test AP"
    ESSID:""
    Bit Rates:1 Mb/s; 2 Mb/s; 5.5 Mb/s; 11 Mb/s; 6 Mb/s
    9 Mb/s; 12 Mb/s; 18 Mb/s
    As a consequence, the AP shows in wicd manager with a hidden essid (and I think it would not appear at all, using standard MS Windows or Mac network tools).

    To prevent airbase-ng from broadcasting empty ESSID, one has to configure the AP to respond only to directed probes (using the "-y" option), which is sad when pentesting a network vulnerabilities to rogue AP:

    root@bt:~# airbase-ng -c $AP_CHANNEL -e $AP_ESSID -y mon0
    then:
    root@bt:~# iwlist wlan0 scan | grep -A 3 -B 3 AP
    Frequency:2.427 GHz (Channel 4)
    Quality=70/70 Signal level=-24 dBm
    Encryption keyff
    ESSID:"Test AP"
    Bit Rates:1 Mb/s; 2 Mb/s; 5.5 Mb/s; 11 Mb/s
    Bit Rates:6 Mb/s; 9 Mb/s; 12 Mb/s; 18 Mb/s; 24 Mb/s
    36 Mb/s; 48 Mb/s; 54 Mb/s
    This time the AP shows up with proper ESSID in wicd manager (and I suppose in any standard network tool).

    Additional informations:
    - the behavior is the same with/without the "-P" switch
    - interface mon0 MAC address is altered using macchanger before creating interface at0

    This may relate to this recent thread: airbase-ng shouldn't broadcast empty ssid if an ssid is specified, that does not seem very active for a few weeks.

    Googling about this, I've also found this thread channels removed for european wlan cards? at the aircrack-ng bug reports forum: since the upgrade I'm not able to use the channel 13 (I'm in EU) that I used before. Though this seems to be a driver issue, it actually didn't happen for me before the same upgrade that has broken airbase-ng. I will try to manage the CRDA stuff before continuing on this one.

    But, regarding the aircrack-ng package, I have a few questions:
    - Can anyone reproduce the issue about improperly broadcasting empty ESSIds ?
    - Does BT4 still include aircrack-ng 1.0rc1 ? if so, is there a plan/workaround for upgrading to aircrack-ng 1.0 ? If not (due to requirements issues I suppose, may be airoscript and gerix-wifi-cracker), could we expect the upgrades to backport the most important fix/features from aircrack-ng 1.0rc2/1.0rc3/1.0rc4/1.0 to the aircrack-ng 1.0rc1-rXXXX-btX,?
    - I would like to downgrade my aircrack-ng package from 1.0rc1-r1668-bt7 to 1.0rc1-r1645-bt0, that works better for me. I've tried using Synapic, but Package/Force version is unavailable for this package; which tool/commands should I use ?

    Any answer or advice would be appreciated.

    Regards.
    Last edited by cabadce; 03-18-2010 at 10:54 AM.

  2. #2
    Member joker5bb's Avatar
    Join Date
    Feb 2010
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    Default Re: upgrade broke airbase-ng

    latest version in the repo is Aircrack-ng 1.0 r1685
    u have installed the ubuntu version

  3. #3
    Just burned his ISO
    Join Date
    May 2010
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    3

    Default Re: upgrade broke airbase-ng

    I think you've installed the wrong version... mine works fine.

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