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Thread: Change the MAC-address of your external Wifi-Card in OSX using BT

  1. #1
    Member Vagabond's Avatar
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    Default Change the MAC-address of your external Wifi-Card in OSX using BT

    Yes folks, thatīs right...
    More then offen you want to access that juicy Mikrotik-hotspot for example, you already sniffed
    a valid mac-address, but there is no tool out there to change it in OSX. well, there still isnīt, but playing around with Backtrack and VMware Fusion I found a workaround.

    Tested on Alfa036H

    1. connect your card to Backtrack
    2. type:
    Code:
    macchanger wlan0 (or whatever it is) --mac=XX:XX:XX:XX:XX:XX
    3. Connect to your AP with wicd (maybe not necessary)
    4. Now disconnect you wificard in VMWARE
    5. Start the "Realtek USB Wlan Client" (the blue crap)
    6. The MAC should be the one you chose in Backtrack.
    7. Enjoy

    I found that I sometimes had to reboot to make that work.
    OSX has to create a new interface with that MAC.

    If anyone has a more elegant way of doing this, please POST !!

  2. #2
    Senior Member LHYX1's Avatar
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    Default Re: Change the MAC-address of your external Wifi-Card in OSX using BT

    http://osxdaily.com/2008/01/17/how-t...s-in-mac-os-x/

    Maybe this works ?
    I couldn't test it because I don't own a mac.
    (\ /)
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    Copy and paste bunny into your signature to help him gain world domination.

  3. #3
    Senior Member VulpiArgenti's Avatar
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    Default Re: Change the MAC-address of your external Wifi-Card in OSX using BT

    Yes this has been working for me on Snow Leopard (same as LHYX1's link):

    Code:
    # make an alias for this awful string
    sudo ln -s /System/Library/PrivateFrameworks/Apple80211.framework/Versions/Current/Resources/airport /usr/sbin/airport
    
    # dissociate
    sudo airport -z
    
    # macchange
    sudo ifconfig enX ether XX:XX:XX:XX:XX:XX
    
    # may have to turn airport off and back on
    And for those asking (reasonably) wtf this has to do with backtrack; I find the Broadcom drivers so poor that on a Mac it is better to run BT in a VM, and then use this to macchange the built-in wireless.

  4. #4
    Member Vagabond's Avatar
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    Default Re: Change the MAC-address of your external Wifi-Card in OSX using BT

    Just tried the above method. What I got is that ifconfig reports the spoofed mac, while networksetup -listallhardwareports and the systempreferences report the old one. Guess I have to sniff my own traffic to see whatīs right...anyway, this method is not working with external devices, is it ?

  5. #5
    Senior Member VulpiArgenti's Avatar
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    Default Re: Change the MAC-address of your external Wifi-Card in OSX using BT

    I've looked at the packets in wireshark and airodump; it does seem to be working.

    Have only tried with the internal card. If you want to macchange the usb card, wouldn't it be easier just to use BT for this (what am I missing?)?

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