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Linux Backtrack 4 wireless air unable to dump packet using Intel 3945 ABG card

Posted on 2010-08-21
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Last Modified: 2013-12-27
Hi Everyone,

I've been using Backtrack 4 installed in my laptop which has Intel 3945 ABG card, i am unable to connect to the wifi network but somehow that is not the priority since i can scan the wireless LAN signal in which I'd like to test the security (WEP protected).

but somehow when i run the command "airodump-ng --channel 6 --bssid 00:60:64:29:1F:AB -w DW-result wlan0" it failed, see the blow attached error message ?

at the moment i don't have internet connection in that laptop and wondering what should i do now here to begin using airodump-ng ?

Any help would be greatly appreciated.

Thanks.
root@bt:~# airmon-ng
Interface       Chipset         Driver
wlan0           Intel 3945ABG   iwl3945 - [phy0]
mon0            Intel 3945ABG   iwl3945 - [phy0]
wlan0mon                Intel 3945ABG   iwl3945 - [phy0]
##########################################################################################################
root@bt:~# airodump-ng --channel 6 --bssid 00:60:64:29:1F:AB -w DW-result wlan0
ioctl(SIOCSIWMODE) failed: Device or resource busy
ARP linktype is set to 1 (Ethernet) - expected ARPHRD_IEEE80211,
ARPHRD_IEEE80211_FULL or ARPHRD_IEEE80211_PRISM instead.  Make
sure RFMON is enabled: run 'airmon-ng start wlan0 <#>'
Sysfs injection support was not found either.
##########################################################################################################
root@bt:~# lsmod | grep 3945
iwl3945               148216  0
iwlcore               161336  1 iwl3945
mac80211              204728  2 iwl3945,iwlcore
led_class               3608  3 sdhci,iwl3945,iwlcore
lib80211                5176  2 iwl3945,iwlcore
cfg80211               61268  3 iwl3945,iwlcore,mac80211
##########################################################################################################
root@bt:~# lspci | grep -i net
03:00.0 Ethernet controller: Broadcom Corporation BCM4401-B0 100Base-TX (rev 02)
0c:00.0 Network controller: Intel Corporation PRO/Wireless 3945ABG [Golan] Network Connection (rev 02)
##########################################################################################################
root@bt:~# dmesg | grep firmware
iwl3945 0000:0c:00.0: firmware: requesting iwlwifi-3945-2.ucode
iwl3945 0000:0c:00.0: loaded firmware version 15.28.2.8
##########################################################################################################
root@bt:~# dmesg | grep iwl
iwl3945: Intel(R) PRO/Wireless 3945ABG/BG Network Connection driver for Linux, 1.2.26kds
iwl3945: Copyright(c) 2003-2009 Intel Corporation
iwl3945 0000:0c:00.0: PCI INT A -> GSI 17 (level, low) -> IRQ 17
iwl3945 0000:0c:00.0: setting latency timer to 64
iwl3945 0000:0c:00.0: Tunable channels: 11 802.11bg, 13 802.11a channels
iwl3945 0000:0c:00.0: Detected Intel Wireless WiFi Link 3945ABG
iwl3945 0000:0c:00.0: irq 28 for MSI/MSI-X
phy0: Selected rate control algorithm 'iwl-3945-rs'
iwl3945 0000:0c:00.0: firmware: requesting iwlwifi-3945-2.ucode
iwl3945 0000:0c:00.0: loaded firmware version 15.28.2.8
Registered led device: iwl-phy0::radio
Registered led device: iwl-phy0::assoc
Registered led device: iwl-phy0::RX
Registered led device: iwl-phy0::TX
##########################################################################################################
root@bt:~# dmesg | grep wlan
ADDRCONF(NETDEV_UP): wlan0: link is not ready
device wlan0 entered promiscuous mode
device wlan0mon entered promiscuous mode
device wlan0 left promiscuous mode
##########################################################################################################

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Question by:jjoz
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by:Jamie_Wilson
Jamie_Wilson earned 400 total points
ID: 33491305
Have you tryed 'airmon-ng start wlan0'?

Thanks,
Jamie
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by:jjoz
ID: 33491338
yes i did man, here's the screenshot from Kismet as well, it can detect ranges of Wireless network but somehow cannot perform the testing.

root@bt:~# airmon-ng start wlan0

Interface       Chipset         Driver
wlan0           Intel 3945ABG   iwl3945 - [phy0] (monitor mode enabled on mon2)
mon0            Intel 3945ABG   iwl3945 - [phy0] wlan0mon Intel 3945ABG   iwl3945 - [phy0]
mon1            Intel 3945ABG   iwl3945 - [phy0]

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kismet.jpg
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by:Jamie_Wilson
Jamie_Wilson earned 400 total points
ID: 33491459
Have you tried using interface mon0 when running airodump-ng?
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The ATEN CV211 connects a laptop directly to any server allowing you instant access to perform data maintenance and local operations, for quick troubleshooting, updating, service and repair.

 
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by:jjoz
ID: 33491472
how can i do that ?
"airmon-ng start mon0" ?
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Assisted Solution

by:Jamie_Wilson
Jamie_Wilson earned 400 total points
ID: 33491513
airodump-ng --channel 6 --bssid 00:60:64:29:1F:AB -w DW-result mon0
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Assisted Solution

by:torimar
torimar earned 100 total points
ID: 33491517
Last week, a new version of BackTrack, version 4 R1, was released. It is reported to have greatly improved hardware support.

You might want to consider dist-upgrading, or, if that is not supported, re-installing BT in the hope to get your correct wlan adapter support now. Check with the R1 live CD if that is the case.
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by:jjoz
ID: 33500136
hi guys, I'm using BT4R1 now and this is what I've got. is this correct ?


but somehow the aireplay-ng still not working.

thanks for pointing to use the mon0 it seems to be working now :-)
airodump-ng.jpg
kismet.jpg
aireplay-ng.jpg
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Jamie_Wilson earned 400 total points
ID: 33500273
Stop kismet running in the background - That will be changing the channel on the interface
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by:jjoz
ID: 33564455
thank you guys....
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