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Thread: [Howto] Broadcom BCM4312 802.11b/g [14e4:4315] (rev 01)

  1. #1
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    Default [Howto] Broadcom BCM4312 802.11b/g [14e4:4315] (rev 01)

    Hello there,

    Recently I updated my kernel to 2.6.35 and my injection stopped to work

    When I lock the channel with airodump-ng , channel not lock properly in the corretly channel.

    Some google searches and I see a patch to the kernel . It's apply for more than one wireless card.

    Follow the patch :


    --- net/wireless/chan.c
    +++ net/wireless/chan.c
    @@ -49,9 +49,12 @@ int cfg80211_set_freq(struct cfg80211_registered_device *rdev,
    {
    struct ieee80211_channel *chan;
    int result;
    + struct wireless_dev *mon_dev = NULL;

    - if (wdev && wdev->iftype == NL80211_IFTYPE_MONITOR)
    + if (wdev && wdev->iftype == NL80211_IFTYPE_MONITOR) {
    + mon_dev = wdev;
    wdev = NULL;
    + }

    if (wdev) {
    ASSERT_WDEV_LOCK(wdev);
    @@ -76,5 +79,8 @@ int cfg80211_set_freq(struct cfg80211_registered_device *rdev,
    if (wdev)
    wdev->channel = chan;

    + if (mon_dev)
    + mon_dev->channel = chan;
    +
    return 0;
    }
    Code:
    # cd /usr/src/linux
    # patch -p0 < /way/to/your/patch 
    # make SUBDIRS=net/wireless modules
    # make modules_install 
    # depmod -a
    Now, my wireless injection works

    References:

    /dev/random » BackTrack4-R1 + AWUS036NH = Win!

    https://patchwork.kernel.org/patch/103589/
    Last edited by spawn; 09-27-2010 at 03:02 PM.

  2. #2
    Just burned his ISO
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    Default Re: [Howto] Broadcom BCM4312 802.11b/g [14e4:4315] (rev 01)

    i use bcm 4312 as well and have updated all aspects of my backtrack distro that i know off at least

    but i use spoonwep that i apt-got

    no issues using spoonwep, and im fairly certain spoonwep is just a gui for aircrack, etc.

  3. #3
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    Default Re: [Howto] Broadcom BCM4312 802.11b/g [14e4:4315] (rev 01)

    The problem is with broadcom's with pci-id, [14e4:4315], which is partially supported

    Regards

  4. #4
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    Default Re: [Howto] Broadcom BCM4312 802.11b/g [14e4:4315] (rev 01)

    could you give me the command to manually test packet injection in bt4? after re reading this im no so sure that i still have injection, thanks

  5. #5
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    Default Re: [Howto] Broadcom BCM4312 802.11b/g [14e4:4315] (rev 01)

    aireplay-ng -9 <monitor_if>

    but test if your monitor_if lock on channels properly

    try lock a channel with airodump-ng and try deauthenticate an client connected on AP

    Regards

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