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Echo Magazine Issue 29 Phile 0x010

eZine's profile picture
Published in 
Echo Magazine
 · 4 years ago

  

____ (_) _____ (_) _ ____
(____) ___ (_)__ ___ (_____) _ (_)__ (____)
(_)_(_)_(___)(____) (___) _(_) (_)(____) (_)_(_)
(__)__(_)___ (_) (_)(_)_(_)(_)__ (_)(_) (_)(__)__
(____)(____)(_) (_) (___)(_____)(_)(_) (_) (____)
ECHO MAGAZINE VOLUME XII, ISSUE XXIX, PHILE 0x010.TXT

Hacker Log Book:
Open Your Brain and Keep Tracking : Wireless Intrusion Detection System - lirva32
lirva32/at/yahoo/dot/com

-----| Pendahuluan

Penyerangan jaringan wireless begitu sangat mudah dilakukan oleh banyak orang
dikarenakan sifat jaringan wireless yang mempergunakan gelombang radio dalam
mengirimkan paket datanya sehingga sangat rentan sekali terhadap penyerangan-
penyerangan yang dapat dilakukan.Nah, Karena perihal tersebut makanya kita
perlu melakukan pemantauan terhadap jaringan wireless yang kita miliki dengan
membangun Wireless IDS.

IDS sendiri merupakan aplikasi yang dapat mendeteksi aktivitas-aktivitas yang
mencurigakan dalam sebuah jaringan komputer, sedangkan Wireless IDS tentu
saja IDS berbasis wireless yang digunakan untuk memantau aktifitas yang
mencurigakan pada jaringan wireless.Wireless IDS ini bekerja dengan
melakukan kegiatan traffic sniffing pada gelombang radiountuk memantau
paket-paket data yang mencurigakan ;)

Mau tau kegiatan apa saja yang dipantau oleh Wireless IDS ? ini adalah beberapa
kegiatan yang biasa dilakukan oleh wireless IDS, diantaranya :

[1] Monitoring Penyerangan terhadap WEP/WPA/WPA2/WPS Wireless IDS akan memantau
penyerangan yang biasa dilakukan oleh attacker untuk mengumpulkan paket data
yang dibutuhkan untuk proses cracking w* key.

[2] Monitoring Penyerangan Deauthentication Wireless IDS akan mendeteksi proses
mass deauthenticationyang ditujukan ke Access Point dengan jumlah paket data
yang tidak masu akal sehingga diindikasikan sebagai handshake terhadap
pengumpulan paket data dan penyerangan WPA.

[3] Monitoring Penyerangan Continual Data Packet Wireless IDS akan menditeksi
pengiriman paket data yang dikirim secara terus menerus dan ditujukan ke titik
sasaran dalam hal ini adalah Access Point (AP) dengan menggunakan MAC Address
broadcast. Teknik ini mengindikasikan terjadi pengumpulan paket data dan
penyeranganWEP.

[4] Monitoring Unreasonable amount of Data Communication Wireless IDS akan
menditeksi jika terjadi pengiriman paket data yang tidak masuk akal pada
jalannya komunikasi antara client (--host) menuju Access Point (AP) menggunakan
EAP autentikasi yang mengindikasikan adanya serangan WPS bruteforce menggunakan
Reaver.Reaver sendiri merupakan aplikasi yang biasa digunakan untuk melakukan
bruteforce terhadap WPS.

[5] Rogue AP dan Evil Twins AP Connection Wireless IDS akan menditeksi
keberadaan AP dengan melakukan monitoring terhadap perpindahan jalur yang
dipergunakan oleh client (--host) ke AP lain yang memiliki kesamaan nama SSID.

-----| IDS Topologi


(( | | )) (( | | )) (( | | ))
------- --------- -------
|______| |_______| |_____|
AP1 AP2 AP3



000
000
+----------+ |
| wireless | [ ]
| IDS | (()) / \
+----------+ | |
/ - - - - /----+ / \
/__________ / wifi-usb / \
notebook as IDS attacker

Keterangan :
1. Terdapat 3 AP, yaitu AP1, AP2, AP3
2. AP1, AP2 dan AP3 dimonitoring oleh 1 notebook sebagai IDS
3. Attacker melakukan penyerangan
4. Notebook sebagai IDS Monitoring

-----| Network InfraStruktur

Dalam uji coba wireless IDS, saya mempergunakan network infrastruktur sbb :

[.] Access Point :2 Linksys WRT54GL, 1 Dlink DWR-112 with WPS Pin.
[.] Notebook :with OS Backtrack 5 R3
[.] Wifi USB:Airlive WL-1700USB with Monitoring Support.

-----| Membangun Wireless IDS

Untuk membangun wireless IDS ada beberapa hal yang harus kita siapkan, diantaranya :
[1] Root Access
[2] Python 2.6 atau diatasnya
[3] Aircrack-NG suite
[4] Tshark
[5] Wireless IDS script : wids.py.
Bisa didownload disini : https://github.com/SYWorks/wireless-ids

-----| Keunggulan wireless IDS : wids.py

[001] Mampu menampilkan nama Access Point (SSID) yang serupa yang biasa dikenal
dengan 'Evil Twins'
[002] Mampu menampilkan informasi SSID secara lengkap
[003] Mampu menditeksi paket data Chopchop yang dikirim oleh aircrack-ng pada
serangan WEP
[004] Mampu menditeksi paket data Framentasi PRGA yang dikirim oleh aircrack-ng
pada serangan WEP
[005] Mampu menditeksi kegiatan WPA downgrade yang dilakukan dengan MDK3
[006] Mampu menditeksi serangan ekploitasi Michael Shutdown yang dilakukan
dengan MDK3
[007] Mampu menditeksi serangan Flooding Beacon yang dilakukan dengan MDK3
[008] Mampu menditeksi Authentication DoS yang dilakukan dengan MDK3
[009] Mampu menditeksi penyerangan Association Flooding
[010] Mampu menditeksi penyerangan WPA Migration yang dilakukan dengan
aircrak-ng pada serangan WPA
[011] Memungkinkan adanya penyimpanan log monitoring ke file
[012] silahkan dicoba saja biar tambah cerdas dan pintar ;)




-----| Wireless IDS Eksekusi

Wireless IDS harus dieksekusi dan berjalan selama proses monitoring dilakukan,
Wireless IDS dapat dieksekusi dengan cara berikut ini :

. mkdir /home/wids
. copy script "wids.py" kedalam folder tersebut

eksekusi :

+---------------------------
| # iwconfig
| # iw reg set BO
| # iwconfig
| lono wireless extensions.
|
| wlan1 IEEE 802.11bgESSID:off/any
| Mode:ManagedAccess Point: Not-Associated Tx-Power=30 dBm
| Retrylong limit:7 RTS thr:off Fragment thr:off
| Encryption key:off
| Power Management:off
|
| wlan0 IEEE 802.11abgMode:MonitorFrequency:2.412 GHzTx-Power=15 dBm
| Retrylong limit:7 RTS thr:off Fragment thr:off
| Power Management:off
|
| eth0no wireless extensions.
|
| # ./wids.py -i wlan1 -t 120
|
+---------------------------


-----| Hasil eksekusi :

+--------------------------------
|
| WIDS 1.0, R.3 - The Wireless Intrusion Detection System
| by SY Chua, 07 Jan 2014, Updated 19 Jan 2014
|
| [!]Description : < Beta Release >
| This a a beta release and reliablity of the information might not be totally accurate..
| This application sniff the surrounding wireless network for any suspicious packets detected such as high amount of
| association/authentication packets, suspicious data sent via broadcast address, unreasonable high amount of deauth
| packets or EAP associationpacketswhichin the other way indicated possible way indicated possible WEP/WPA/WPS
| attacks found..
| New !! Detecting connected client for possible Rogue AP
|
| Usage : ./wids.py [options] <args>
| Running application without parameter will fire up the interactive mode.
|
| Options:
| -h--help - Show basic help message and exit
| -hh - Show advanced help message and exit
| -i--iface <arg> - Set Interface to use
| -t--timeout <arg> - Duration to capture before analysing the captured data
|
| Examples: ./wids.py --update
| ./wids.py -i wlan0 -t 120
| ./wids.py --iface wlan1 --timeout 20
|
| -------------------------------------------------------------------------------
|
| [i]Entering Interactive Mode..
| Started : 2014-03-16 14:40:53
|
| [i]Monitor Selection
| Selected Monitoring Interface ==> wlan1
|
+---------------------------------

-----| Pengujian Wireless IDS

Wireless IDS yang sudah didirikan harus diuji dengan beberapa teknik
penyerangan, diantaranya :

- Beacon Flooding:
# mdk3 <wifi_interface> b -n <ssid_target>

- Authentication DoS Mode:
# mdk3 <wifi_interface> a -a <mac_ap_target>

- Michael shutdown exploitation (TKIP):
# mdk3 <wifi_interface> m -t <mac_ap_target>

- WIDS/WIPS/WDS Confusion :
# mdk3 <wifi_interface> w -e <ssid_target> -c <channel_AP> -z

- WPA Downgrade Test:
# mdk3 <wifi_interface> g -t <mac_address_ap_target>

- reaver -i mon0 -b <mac_addree_AP_target> -vv

- WEP and WPA cracking all methode

-----| Hasil Monitoring :

Jika tidak terjadi penyerangan apapun:
+---------------------------------
| [i]16/03/2014 16:06:06 - Did not detect any suspicious activity ...
| [i]16/03/2014 16:06:31 - Did not detect any suspicious activity ...
| [i]16/03/2014 16:06:57 - Did not detect any suspicious activity ...
| [i]16/03/2014 16:07:22 - Did not detect any suspicious activity ...
+---------------------------------

Analisis :
----------
tidak terjadi penyerangan terhadap Access Point (AP)

Jika Client (Host) berasosiasi dengan AP :
+---------------------------------
| Alert : Client [ D8:A2:5E:8E:69:92 ] initally associated to [ C8:B3:73:31:17:76 ] is now associated to [ 00:23:69:4F:D2:B2 ]..
| BSSID[ C8:B3:73:31:17:76 ]'s Name is [ AP3 ].
| BSSID[ 00:23:69:4F:D2:B2 ]'s Name is [ AP2 ].
| Alert : Client [ D8:A2:5E:8E:69:92 ] initally associated to [ 00:25:9C:D0:26:04 ] is now associated to [ 00:23:69:4F:D2:B2 ]..
| BSSID[ 00:25:9C:D0:26:04 ]'s Name is [ AP2 ].
| BSSID[ 00:23:69:4F:D2:B2 ]'s Name is [ AP1 ].
+---------------------------------

Analisis :
----------
Client (host) telah berpindah dari satu AP ke AP lain tapi perpindahannya ke
SSID yang berbeda jadi secara analsis client (host) tidak terjebak pada Rogue
AP dan Evil Twin.


Jika terjadi penyerangan Deauth. untuk WPA attack :
+---------------------------------
| [.]Deauth Flood detected calling from
| [ 00:25:9C:D0:26:04 ] to [ 00:23:69:4F:D2:B2 / C4:2C:03:0E:64:7F / 01:00:5E:00:00:16 / 00:25:9C:C1:30:D5 ]
| with 665 deauth packets
| [00:23:69:4F:D2:B2 ] is AP Name [ AP3 ] and Privicy=WPA Cipher=CCMP Authentication=PSK Power=-49
| [00:25:9C:D0:26:04 ] is AP Name [ AP2 ] and Privicy=WPA Cipher=CCMP Authentication=PSK Power=-37
| [00:23:69:4F:D2:B2 ] is associated with[ 00:25:9C:D0:26:04 ]
| [C4:2C:03:0E:64:7F ] is associated with[ 00:25:9C:D0:26:04 ]
| [00:25:9C:D0:26:04 ] is associated with[ 00:25:9C:C1:30:D7 ]
| Handshake Found [ 3 ]
| [i]16/03/2014 15:45:33 - 1 concerns found...
| Possibility : WPA attacks
|
+---------------------------------

Analisis :
Perhatikan Deauth Flood detected calling from[ 00:25:9C:D0:26:04 ] to
[ 00:23:69:4F:D2:B2 / C4:2C:03:0E:64:7F / 01:00:5E:00:00:16 / 00:25:9C:C1:30:D5 ]
with 665 deauth packets, terjadi pengiriman paket data yang mecurigakan.
Possibility : WPA attacks menunjukkan benar-benar terjadi penyerangan terhadap WPA.

Jika terjadi perpindahan client [host] ke AP :
+---------------------------------
| [i]16/03/2014 16:12:24 - Did not detect any suspicious activity ...
| Converting captured packets... Please wait...
| Alert : Client [ D8:A2:5E:8E:69:92 ] initally associated to [ 00:25:9C:D0:26:04 ] is now associated to [ 00:25:9C:C1:30:D7 ]..
| BSSID[ 00:25:9C:D0:26:04 ]'s Name is [ AP1].
| BSSID[ 00:25:9C:C1:30:D7 ]'s Name is [ AP1 ].
|
| Alert : Client [ D8:A2:5E:8E:69:92 ] initally associated to [ 00:25:9C:D0:26:04 ] is now associated to [ 00:25:9C:C1:30:D7 ]..
| BSSID[ 00:25:9C:D0:26:04 ]'s Name is [ AP2 ].
| BSSID[ 00:25:9C:C1:30:D7 ]'s Name is [ AP2 ].
+----------------------------------

Analsis:
Hasil monitoring ini digunakan untuk analisa terhadap Rogue AP dan Evil Twin,
hal ini bisa dianalisa dari perpindahan client (host) dari 1 AP ke AP lain yang
memiliki SSID yang sama.

Jika terjadi penyerangan WPS dengan Reaver :
+----------------------------------
| [.]Detected authentication sent from [ 00:4F:78:00:03:05 ] to [ C8:BE:19:8C:37:A4 ] with 6 authentication request detected
| [C8:BE:19:8C:37:A4 ] is AP Name [ GuruZ ] and Privicy=WPA2 Cipher=CCMP/TKIP Authentication=PSK Power=-36
| [00:4F:78:00:03:05 ] is associated with [ C8:BE:19:8C:37:A4 ]
| [.]Detected association sent from [ 00:4F:78:00:03:05 ] to [ C8:BE:19:8C:37:A4 ] with 6 association request detected
| [C8:BE:19:8C:37:A4 ] is AP Name [ GuruZ ] and Privicy=WPA2 Cipher=CCMP/TKIP Authentication=PSK Power=-36
| [00:4F:78:00:03:05 ] is associated with [ C8:BE:19:8C:37:A4 ]
|
| [.]EAP communication between AP and client sending from [ 00:4F:78:00:03:05 ] to [ C8:BE:19:8C:37:A4 ] with 8 EAP packets detected
| [C8:BE:19:8C:37:A4 ] is AP Name [ GuruZ ] and Privicy=WPA2 Cipher=CCMP/TKIP Authentication=PSK Power=-36
| [00:4F:78:00:03:05 ] is associated with [ C8:BE:19:8C:37:A4 ]
| Note: If constantly seeing EAP communication between this two devices, it is likely that a WPS bruteforce is in progress..
| [.]Detected authentication sent from [ C8:BE:19:8C:37:A4 ] to [ 00:4F:78:00:03:05 ] with 3 authentication request detected
| [C8:BE:19:8C:37:A4 ] is AP Name [ GuruZ ] and Privicy=WPA2 Cipher=CCMP/TKIP Authentication=PSK Power=-36
| [00:4F:78:00:03:05 ] is associated with[ C8:BE:19:8C:37:A4 ]
| [.]Detected association sent from [ C8:BE:19:8C:37:A4 ] to [ 00:4F:78:00:03:05 ] with 3 association request detected
| [C8:BE:19:8C:37:A4 ] is AP Name [ GuruZ ] and Privicy=WPA2 Cipher=CCMP/TKIP Authentication=PSK Power=-36
| [00:4F:78:00:03:05 ] is associated with[ C8:BE:19:8C:37:A4 ]
|
| [.]EAP communication between AP and client sending from [ C8:BE:19:8C:37:A4 ] to [ 00:4F:78:00:03:05 ] with 2 EAP packets detected
| [C8:BE:19:8C:37:A4 ] is AP Name [ GuruZ ] and Privicy=WPA2 Cipher=CCMP/TKIP Authentication=PSK Power=-36
| [00:4F:78:00:03:05 ] is associated with[ C8:BE:19:8C:37:A4 ]
| Note: If constantly seeing EAP communication between this two devices, it is likely that a WPS bruteforce is in progress..
|
| [i]16/03/2014 18:00:22 - 6 concerns found...
| Possibility : WPS attacks.
+----------------------------------

Analisis :
Perhatikan hasil monitoring tersebut, terdapat EAP Communication antara AP dan
Client (host) yang merupakan ciri kerja dari aplikasi Reaver dalam menjalankan
aksi untuk meng-cracking Pin WPS.

-----| Kesimpulan :

Penyerangan terhadap jaringan wireless bisa dilakukan kapan saja, dimana saja
dan oleh attacker siapa saja oleh karena itu diperlukan suatu proses monitoring
agar penyerangan dapat diketahui sejak dini. Untuk membangunwireless IDS
tidaklah sulit tapi manfaatnya begitu sangat menggoda ;)
Waspada..waspadalah...:0)

-----| Referensi :
. http://en.wikipedia.org/wiki/Intrusion_detection_system
. https://github.com/SYWorks/wireless-ids : readme.md

-----|Greetz :

[1]Echo|Staff
[3]MyWife : Selly, MyDaughter : Faiza Debian dan Fivana Gutsy
[9]MyFriends : Cindy Wijaya, Victor Adhitya thx for sharing ;)
[12] AllMyFriends@MagisterIT-Eresha43
[15] AllMyStudent@STMIK Bina Insani
[18] RF-IT Consultant, RNDC, OpenWRT Indonesia, DDWRT Community, id-networkers
[21] Semua yang membaca tulisan ini.

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