intel wireless 5100 AGN adapter to support injection

Question

i ran aireplay-ng -9 wlan0 and it seems that my intel PRO/Wireless 5100 AGN adapter does not support injection. i use Ubuntu 10.10 64bit (2.6.35-25-generic kernel). is it possible to make the adapter have injection capability? if yes, how?

Answer 1

Try using Backtrack or Blackbuntu. Those two distribution have better driver support for packet injection. Some wireless cards need specially modified drivers. Once you figure out which one you need you can install it in Ubuntu. Backtrack and Blackbuntu are worth using for that purpose though.

Also it is worth noting that you MAY have better luck using a 32-bit OS, Backtrack for one is only 32-bit because most drivers and tools work better. I can't vouch for there being any issues with using a 64-bit OS though.

Good luck in your Penetration Testing. (I hope that's what your purpose is)

Answer 2

On a brand new install I did this:

first switch to root:
nano /etc/modprobe.d/intel-5300-iwlagn-disable11n.conf


make it look like this:
#options iwlagn 11n_disable=1
options iwlagn 11n_disable=1 swcrypto=1


Reboot and or in a terminal do something like the following

   
root@main:/home/bildr# modprobe -r iwlagn    
root@main:/home/bildr# modprobe iwlagn
root@main:/home/bildr# killall nm-applet    
root@main:/home/bildr# airmon-ng start wlan0    

Found 4 processes that could cause trouble.    
If airodump-ng, aireplay-ng or airtun-ng stops working after    
a short period of time, you may want to kill (some of) them!    

PID Name    
1028    NetworkManager    
1030    avahi-daemon    
1031    avahi-daemon    
1176    wpa_supplicant    


Interface   Chipset     Driver    

wlan0       Intel 4965/5xxx iwlagn - [phy0]    
                (monitor mode enabled on mon0)    

root@main:/home/bildr# aireplay-ng --test mon0    
15:25:36  Trying broadcast probe requests...    
15:25:36  Injection is working!    
15:25:38  Found 4 APs    

15:25:44  00:21:29:DB:C4:B4 - channel: 11 - 'Turbeville'    
15:25:45  Ping (min/avg/max): 1.418ms/31.889ms/47.236ms Power: -54.60    
15:25:45  30/30: 100%    
^C    

root@main:/home/bildr# airmon-ng stop wlan0    


Interface   Chipset     Driver    

wlan0       Intel 4965/5xxx iwlagn - [phy0]    
                (monitor mode disabled)    
mon0        Intel 4965/5xxx iwlagn - [phy0]    

root@main:/home/bildr# airmon-ng stop mon0    


Interface   Chipset     Driver    

wlan0       Intel 4965/5xxx iwlagn - [phy0]    
mon0        Intel 4965/5xxx iwlagn - [phy0] (removed)    

root@main:/home/bildr# modprobe -r iwlagn    
root@main:/home/bildr# modprobe iwlagn
root@main:/home/bildr# killall nm-applet    
bildr@main:/home/bildr# nm-applet &
  

Answer 3

I really can't remember if I ever got it to work on my ASUS X5AVN with Intel 5100 wireless network card. But I remember that I succesfully cracked a couple of test networks, but I used a USB dongle which supported Injection and Monitoring mode. I didnt do it the sufficient way, I used two laptops, my main laptop with the 5100 wireless and another laptop with backtrack and the USB dongle. My brother has my dongle at the moment, so I can not recall what name it is, but it supports bigger antennas.

I can recommend this site to find compatible cards for injection and monitoring mode.

Aircrack compatible cards

I have a little "bonus" info for you if you get it up and running, a person called G0tm1lk created a nice script for automatisation. I recommend you learn aircrack-ng before you use this script.

http://g0tmi1k.blogspot.com/2010/09/scriptvideo-wiffy-v01.html