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alobbs / macchanger

GNU MAC Changer
http://www.gnu.org/software/macchanger
GNU General Public License v3.0
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Mac address resets to permanent after enabling airmon-ng! #35

Open Syeeric opened 8 years ago

Syeeric commented 8 years ago

I have taken several approaches in trying to solve this but have been unsuccessful. rather a lot of tools out there require airmon-ng to be active, so i hope someone is able to assist me.

At the end of the log you can see that the mac address has reset back to permanent without me requesting it.

in this case the permanent mac address = d2:14:d4:7b:71:d5

and the new mac address is = 00:03:60:6b:61:2e

Here is log proof of what happens in the latest kali distribution.

root@kali:~# airmon-ng check kill

root@kali:~# ifconfig wlan0 down

root@kali:~# macchanger -a wlan0

Current MAC: d2:14:d4:7b:71:d5 (Intel Corporate)

Permanent MAC: d2:14:d4:7b:71:d5 (Intel Corporate)

New MAC: 00:03:60:6b:61:2e (PAC Interactive Technology, Inc.)

root@kali:~# ip link show wlan0

11: wlan0: <BROADCAST,MULTICAST> mtu 1500 qdisc noop state DOWN mode DEFAULT group default qlen 1000 link/ether 00:03:60:6b:61:2e brd ff:ff:ff:ff:ff:ff

root@kali:~# ifconfig wlan0 up

root@kali:~# ip link show wlan0

11: wlan0: <NO-CARRIER,BROADCAST,MULTICAST,UP> mtu 1500 qdisc mq state DOWN mode DEFAULT group default qlen 1000 link/ether 00:03:60:6b:61:2e brd ff:ff:ff:ff:ff:ff

root@kali:~# airmon-ng start wlan0

PHY Interface Driver Chipset

phy0 wlan0 iwlwifi Intel Corporation Ultimate N WiFi Link 5300

    (mac80211 monitor mode vif enabled for [phy0]wlan0 on [phy0]wlan0mon)

    (mac80211 station mode vif disabled for [phy0]wlan0)

root@kali:~# ip link show wlan0mon

12: wlan0mon: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc mq state UNKNOWN mode DEFAULT group default qlen 1000 link/ieee802.11/radiotap d2:14:d4:7b:71:d5 brd ff:ff:ff:ff:ff:ff

root@kali:~# airmon-ng stop wlan0mon

PHY Interface Driver Chipset

phy0 wlan0mon iwlwifi Intel Corporation Ultimate N WiFi Link 5300

    (mac80211 station mode vif enabled on [phy0]wlan0)

    (mac80211 monitor mode vif disabled for [phy0]wlan0mon)

root@kali:~# ip link show wlan0

13: wlan0: <BROADCAST,MULTICAST> mtu 1500 qdisc noop state DOWN mode DEFAULT group default qlen 1000 link/ether d2:14:d4:7b:71:d5 brd ff:ff:ff:ff:ff:ff

root@kali:~# macchanger wlan0

Current MAC: d2:14:d4:7b:71:d5 (Intel Corporate) Permanent MAC: d2:14:d4:7b:71:d5 (Intel Corporate)

root@kali:~#

stillrowdy commented 6 years ago

I am experiencing the exact the same issue.

Chipset: Ralink Technology, Corp. RT2770 Driver: rt2800usb

macchanger: v 1.7.0 airmon-ng: v 1.2-rc3

stillrowdy commented 6 years ago

Update: I was able to work around this issue by using ifconfig to bring wlan0mon down after using airmon-ng to set it to monitor mode, setting the mac, and using ifconfig to bring wlan0mon back up. This seems to have done the trick.

# airmon-ng start wlan0

# ifconfig wlan0mon down

# macchanger -r wlan0mon

# ifconfig wlan0mon up

# macchanger -s wlan0mon