MAC changer error!!! need Help plz

[M1TH1K]

Hi,

I´m using backtrack 3 and i have a realtek RTL8187B wireless card with the driver rtl8187b_linux_24.6.1024.0822.2007.

Every time i try to change my mac address i receve an error and some times backtrack crashe.

The error is the same if i right:


bt # macchanger --mac 00:11:22:33:44:55 wlan0


or


bt # ifconfig wlan0 hw ether 00:11:22:33:44:55



The error is:


bt # macchanger --mac 00:11:22:33:44:55 wlan0
Current MAC: YO:UR:MA:CAD:YY (unknown)
Faked MAC: 00:11:22:33:44:55 (Cimsys Inc)

Message from syslogd@(none) at Sat Dec 27 01:52:07 2008 ...
(none) kernel: Oops: 0000 [#1]

Message from syslogd@(none) at Sat Dec 27 01:52:07 2008 ...
(none) kernel: SMP

Message from syslogd@(none) at Sat Dec 27 01:52:07 2008 ...
(none) kernel: CPU: 1

Message from syslogd@(none) at Sat Dec 27 01:52:07 2008 ...
(none) kernel: EIP: 0060:[<f93434bd>] Not tainted VLI

Message from syslogd@(none) at Sat Dec 27 01:52:07 2008 ...
(none) kernel: EFLAGS: 00010286 (2.6.21.5 #4)

Message from syslogd@(none) at Sat Dec 27 01:52:07 2008 ...
(none) kernel: EIP is at rtl8180_commit+0xd/0x50 [r8187]

Message from syslogd@(none) at Sat Dec 27 01:52:07 2008 ...
(none) kernel: eax: 00000000 ebx: 00000000 ecx: 00000296 edx: 00000000

Message from syslogd@(none) at Sat Dec 27 01:52:07 2008 ...
(none) kernel: esi: 000014e4 edi: d45b96ac ebp: 00000296 esp: c312ff44

Message from syslogd@(none) at Sat Dec 27 01:52:07 2008 ...
(none) kernel: ds: 007b es: 007b fs: 00d8 gs: 0000 ss: 0068

Message from syslogd@(none) at Sat Dec 27 01:52:07 2008 ...
(none) kernel: Process events/1 (pid: 7, ti=c312e000 task=c310d5b0 task.ti=c312e000)

Message from syslogd@(none) at Sat Dec 27 01:52:07 2008 ...
(none) kernel: Stack: 00000082 d45b96ac dfe08240 f9343544 d45b96b0 c012d222 00000000 c312ff8c

Message from syslogd@(none) at Sat Dec 27 01:52:07 2008 ...
(none) kernel: 0000dabe c301ab60 dfe0824c dfe08260 f9343520 dfe08240 dfe0824c dfe08254

Message from syslogd@(none) at Sat Dec 27 01:52:07 2008 ...
(none) kernel: c312ffa0 c012da07 00000001 00000000 00000000 00010000 00000000 00000000

Message from syslogd@(none) at Sat Dec 27 01:52:07 2008 ...
(none) kernel: Call Trace:

Message from syslogd@(none) at Sat Dec 27 01:52:07 2008 ...
(none) kernel: [<f9343544>] rtl8180_restart+0x24/0x40 [r8187]
bt rtl8187b-modified #
Message from syslogd@(none) at Sat Dec 27 01:52:07 2008 ...
(none) kernel: [<c012d222>] run_workqueue+0x92/0x140

Message from syslogd@(none) at Sat Dec 27 01:52:07 2008 ...
(none) kernel: [<f9343520>] rtl8180_restart+0x0/0x40 [r8187]

Message from syslogd@(none) at Sat Dec 27 01:52:07 2008 ...
(none) kernel: [<c012da07>] worker_thread+0x157/0x180

Message from syslogd@(none) at Sat Dec 27 01:52:07 2008 ...
(none) kernel: [<c0118d70>] default_wake_function+0x0/0x10

Message from syslogd@(none) at Sat Dec 27 01:52:07 2008 ...
(none) kernel: [<c012d8b0>] worker_thread+0x0/0x180

Message from syslogd@(none) at Sat Dec 27 01:52:07 2008 ...
(none) kernel: [<c0130614>] kthread+0xd4/0xf0

Message from syslogd@(none) at Sat Dec 27 01:52:07 2008 ...
(none) kernel: [<c0130540>] kthread+0x0/0xf0

Message from syslogd@(none) at Sat Dec 27 01:52:07 2008 ...
(none) kernel: [<c0103c57>] kernel_thread_helper+0x7/0x10

Message from syslogd@(none) at Sat Dec 27 01:52:07 2008 ...
(none) kernel: =======================

Message from syslogd@(none) at Sat Dec 27 01:52:07 2008 ...
(none) kernel: Code: ba 76 2c 00 19 c0 85 c0 74 e4 89 f0 e8 ad c2 31 c7 31 c0 5b 5e c3 90 8d b4 26 00 00 00 00 56 53 83 ec 04 89 c3 8d b0 e4 14 00 00 <66> 83 7e 62 00 75 0c 58 5b 5e c3 90 8d b4 26 00 00 00 00 c7 04

Message from syslogd@(none) at Sat Dec 27 01:52:07 2008 ...
(none) kernel: EIP: [<f93434bd>] rtl8180_commit+0xd/0x50 [r8187] SS:ESP 0068:c312ff44

bt #



if any one know something about this help me plz.

[imported_cybrsnpr]

Make sure that wlan0 is not "up" when you try to change your MAC address.

[1shot_1kill]

Like cybrsnpr said, make sure that your interface is not "up"

Try this-

 airmon-ng stop wlan0

ifconfig wlan0 down

macchanger --mac 00:11:22:33:44:55 wlan0

airmon-ng start wlan0

Xploitz has really good tutorials. In the beginning of cracking wep he shows how to change your media access control address.

http://forums.remote-exploit.org/sho...t=9063&page=63

Try that and get back to us.

[M1TH1K]

The error persists...

always the same error...

I allways do:

airmon-ng stop wlan0
ifconfig wlan0 down
macchanger --mac 00:11:22:33:44:55 wlan0

and the error comes up. and i have to restart backtrack, because the enter key act like is continuous press down...

thanks the replay.

any suggestion?

[imported_=Tron=]

The error persists...

always the same error...

I allways do:

airmon-ng stop wlan0
ifconfig wlan0 down
macchanger --mac 00:11:22:33:44:55 wlan0

and the error comes up. and i have to restart backtrack, because the enter key act like is continuous press down...

thanks the replay.

any suggestion?

I have noticed this same error from time to time when using macchanger to change the MAC on my Alfa card. The problem however does not require a re-boot and only seems to screw with the enter key, as you put it, for a short while for me.

[M1TH1K]

plz.. help resolving this problem...

[BrianTopper]

plz.. help resolving this problem...

This worked in BT2 for atheros chip wifi cards.Pay attention to the full cap instruction in the middle of the commands.Perhaps it will help:


The 8 steps below will allow you to connect to the internet using a spoofed MAC address on an ath0 (atheros chipset) device.

bt ~ # wlanconfig ath0 destroy
bt ~ # macchanger --mac 00:11:22:33:44:55 wifi0
Current MAC: YO:UR:MA:CAD:YY (unknown)
Faked MAC: 00:11:22:33:44:55 (Cimsys Inc)
bt ~ # wlanconfig ath0 create wlandev wifi0 wlanmode managed

(WHEN YOU TYPE THIS COMMAND,THE NEXT LINE ON YOUR SCREEN SAYS ath0 JUST LIKE THE LINE BELOW THIS ONE!...DO NOT TYPE ath0 IN A NEW COMMAND LINE!!!)

ath0
bt ~ # ifconfig ath0 up
bt ~ # iwconfig ath0 essid NetworkName key WepKeyHere
bt ~ # dhcpcd ath0

Retrieved from "xxxx://backtrack.offensive-security.com/index.php/Howto:_How_to_connect_to_the_internet_on_BT2_using _a_spoofed_MAC_address"

Good luck from another newbie

[M1TH1K]

This worked in BT2 for atheros chip wifi cards.Pay attention to the full cap instruction in the middle of the commands.Perhaps it will help:


The 8 steps below will allow you to connect to the internet using a spoofed MAC address on an ath0 (atheros chipset) device.

bt ~ # wlanconfig ath0 destroy
bt ~ # macchanger --mac 00:11:22:33:44:55 wifi0
Current MAC: YO:UR:MA:CAD:YY (unknown)
Faked MAC: 00:11:22:33:44:55 (Cimsys Inc)
bt ~ # wlanconfig ath0 create wlandev wifi0 wlanmode managed

(WHEN YOU TYPE THIS COMMAND,THE NEXT LINE ON YOUR SCREEN SAYS ath0 JUST LIKE THE LINE BELOW THIS ONE!...DO NOT TYPE ath0 IN A NEW COMMAND LINE!!!)

ath0
bt ~ # ifconfig ath0 up
bt ~ # iwconfig ath0 essid NetworkName key WepKeyHere
bt ~ # dhcpcd ath0

Retrieved from "xxxx://backtrack.offensive-security.com/index.php/Howto:_How_to_connect_to_the_internet_on_BT2_using _a_spoofed_MAC_address"

Good luck from another newbie

Not working....

bt ~ # wlanconfig ath0 destroy
wlanconfig: ioctl: No such device

...
thanks anyway

[crweedon]

you need to replace "ath0" with the relevant wifi device, in this case "wlan0" so try:

wlanconfig wlan0 destroy ...etc...

if that doesn't work for you, try posting more details, a dmesg and ifconfig -a output. if it does work, "nano macchangerwlan0.sh" copy and paste, so that way in the future you can run it as a shell script slightly automating the process and saving you from typing the same thing over and over again

[1shot_1kill]

Are you sure you're using the right interface? When I am using the iwl3945 driver my interfae is wlan0, but when I load the ipwraw drivers it switches to wifi0