Wireless Hacking

DISCLAIMER

1 – The following discussion is for informational and education
purpose only.
2 – Hacking into private network without the written permission
from the owner is Illegal and strictly forbidden.
3 – Misused could result in breaking the law so use it at your own
risk.

Overview
● We're going to learn how WiFi (802.11) works
● Start with terminology
● Types
● Vulnerabilities
● Attacking them
● Surprise demonstration of....:)

                                    Terminology

● AP - Access Point
● MAC – Media Access Control a unique id assigned to wireless
adapters and routers.
It comes in hexadecimal format (ie 00:11:ef:22:a3:6a)

                                   Terminology

● BSSID – Access Point's MAC Address
● ESSID - Access Point’s Broadcast name. (ie linksys, default,
belkin etc) Some AP’s will not broadcast their name,But
Airodump-ng can guess it.

                                                     Gear - Antennas

● Dipole – Standar, Omni directional
● Hyperbolic – Mushroom Shaped signal
● Yaggi – Very directional (Japanese R&D)
● Pringles – Improvised(Hacker Style) Yaggi
● WindSurfer – Improvised hyperbolic

Gear - Antennas
● WindSurfer – Improvised hyperbolic

                   Channels

● The physical frequency of the wireless transmissions
● Channels are between 1-14 (1-11 in the USA)
● 802.11 is the wireless communication standard by IEEE

                                Standards

● 802.11a – 5 GHZ rate : upto 54Mbps
● 802.11b – 2.4 GHZ rate : upto 11Mbps
● 802.11g – 2.4 GHZ rate : upto 54Mbps
● 802.11n – 2.4 GHZ rate : upto 300Mbps
● 802.11ac(draft) – 5 GHZ rate : upto 1.73Gp

                                   Transmission Power

● Transmit power, or txpower, regulated by country.
● txpower has a max of 0.5 Watts
● Coded into the Linux Kernel
● Easier than changing the kernel is to move to another country

                                      A little backdoor

Move to Bolivia (Almost no restrictions there)
iw reg get
iw reg set BO
iwconfig wlan0 txpower 30(only if your card
support it)

                                  WiFi has 6 modes

● Master - Access Point or Base Station
● Managed - Infrastructure Mode (Client)
● Ad-Hoc – Device to Device
● Mesh (Mesh Cloud/Network)
● Repeater - Range Extender
● Monitor (RFMON)

                                                                                    Terminology

● Packet – an amount of data transferred in a network.
● Frame – a container which the packet is transfered within

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