HACKERZ CLUB V 2.O

Wifi - Hacking

WIFI – WIRELESS FIDELITY

Wi-Fi, is a popular technology that allows an electronic device to exchange data or connect to the internet wirelessly using radio waves.

Wireless access allows users to connect to the internet from any location within range of a wireless access point.

SOME BASIC TERMS

MAC address or physical address is a unique identifier assigned to network interfaces for communications 

Access point >> Wireless router

SSID (service set identifier) >> Network Name

BSSID (basic service set identification ) >> MAC address of the access point

BASIC WORKING

When a user uses wireless internet they generate what are called data “packets”.

Packets are transmitted between the wireless card and the wireless access point via radio waves whenever the computer is connected with the access point.

BASIC WORKING CONTD.

Depending on how long the computer is connected, it can generate a certain number of packets per day.

The more users that are connected to one access point, the more packets are generated.

WIRELESS ENCRYPTION

The main source of vulnerability associated with wireless networks are the methods of encryption. There are a few different type of wireless encryption including:

WEP WPA WPA2

WEP

Stands for Wired Equivalent Privacy.  WEP is recognizable by the key of 10 or

26 hexadecimal digits.

WPA OR WPA2

Stands for Wi-Fi Protected Access Created to provide stronger security Still able to be cracked if a short password is

used. If a long passphrase or password is used,

these protocol are virtually not crackable. WPA-PSK and TKIP or AES use a Pre-Shared Key (PSK)

that is more than 7 and less than 64 characters in length.

USING BACKTRACK >>

Some Basic Backtrack Terms >>Wlan0 – wireless interfaceMon0 – monitor modeHandshake –

refers to the negotiation process between the computer and a WiFi server using WPA encryption.

Needed to crack WPA/WPA2.Dictionary - consisting the list of common

passowords. .cap file – used to store packets.

MONITOR MODE

Monitor mode, or RFMON (Radio Frequency MONitor) mode, allows a computer with a wireless network interface controller (WNIC) to monitor all traffic received from the wireless network. 

Monitor mode allows packets to be captured without having to associate with an access point first.

TOOLS USED

Airmon-ng >> Placing different cards in monitor mode

Airodump-ng (Packet snniffer ) >> Tool used to listen to wireless routers in the area.

Aireplay-ng ( Packet injector ) >> Aireplay-ng is used to inject frames. The primary function is to generate traffic for the

later use in aircrack-ng for cracking the WEP and WPA-PSK keys. 

Aircrack-ng >> Cracks WEP and WPA (Dictionary attack) keys.

LETS HACK