There is a list on the website of aircrack-ng, and I think the Alfa AWUS051NH v2 is great.Some people say it is expensive, but last time I checked on Google Shopping, it cost less than half an Apple mouse.
Use JamWiFi to deauth some users, and when tcpdump shows you it got 4 frames or more, Ctrl-C. It appears you can use less that 4 frames, but it depends on the frames you got (for instance 1,2 or 2,3 are sufficient). Anyway you should normally get at least 4. If nothing shows, try to deauth another user.
Deauth Wifi Aircrack For Mac
Secondly, you need to find the MAC address of the client you wish to deauthenticate, and the MAC address of the wireless access point it is connected to. You can achieve this using airodump-ng, which I wrote about here.
Install JamWifi app. It is a deauthenticating application in which unwanted clients from a Wi-Fi network have to keep off, jamming and especially their connection will be departed like dust in a second. Download and unzip by this link (or this).
When tcpdump shows you it got 4 frames or more. It appears you can use less that 4 frames, but it depends on the frames you got (for instance 1,2 or 2,3 are sufficient). Anyway you should normally get at least 4. If nothing shows, try to deauth another user.
Thanks for the info really useful stuff. Really appreciate it.I have one question and still, you have answered previously in the comments here but I am a bit confused.aircrack-ng -1 -a 1 -b -wI know what to use for:BSSID and cap_fileWhat do I need to use for ?
Thanks for the info really useful stuff. Really appreciate it.I have one question and still, you have answered previously in the comments here but I am a bit confused.aircrack-ng -1 -a 1 -b BSSID cap_file -w wordlistI know what to use for:BSSID and cap_fileWhat do I need to use for wordlist ?
I have spent the day trying to run aircrack on my Raspberry Pi. Everything seems to work, airodump-ng shows all the access points in the area and the aireplay-ng deauth doesn't give me any error messages. I set the channel with 'sudo airmon-ng start wlan0 6' then issued a deauth with 'sudo aireplay-ng -0 10 -e -c wlan0' . I've tried two laptops and a mobile, changing the respective MAC addresses but I can see no change. Even after 100 deauths the WIFI stays on. What am I doing wrong? Here's the output:
Well dear wifi will not get turned off it will simply disconnects all the devices connected to it...sometimes disconnection is not shown by pc or computer instantly so to check..try to use internet on the device.. it must not work...
Unlike most radio jammers, deauthentication acts in a unique way. The IEEE 802.11 (Wi-Fi) protocol contains the provision for a deauthentication frame. Sending the frame from the access point to a station is called a "sanctioned technique to inform a rogue station that they have been disconnected from the network".[1]
An attacker can send a deauthentication frame at any time to a wireless access point, with a spoofed address for the victim. The protocol does not require any encryption for this frame, even when the session was established with Wired Equivalent Privacy (WEP) for data privacy, and the attacker only needs to know the victim's MAC address, which is available in the clear through wireless network sniffing.[2][3]
One of the main purposes of deauthentication used in the hacking community is to force clients to connect to an evil twin access point which then can be used to capture network packets transferred between the client and the access point.
In order to mount a brute-force or dictionary based WPA password cracking attack on a WiFi user with WPA or WPA2 enabled, a hacker must first sniff the WPA 4-way handshake. The user can be elicited to provide this sequence by first forcing them offline with the deauthentication attack.[4]
In a similar phishing style attack without password cracking, Wifiphisher starts with a deauthentication attack to disconnect the user from their legitimate base station, then mounts a man-in-the-middle attack to collect passwords supplied by an unwitting user.
The Federal Communications Commission has fined hotels and other companies for launching deauthentication attacks on their own guests; the purpose being to drive them off their own personal hotspots and force them to pay for on-site Wi-Fi services.[5][6][7][8][9]
Aircrack-ng suite, MDK3, Void11, Scapy, and Zulu software can mount a WiFi deauthentication attack.[10] Aireplay-ng, an aircrack-ng suite tool, can run a deauthentication attack by executing a one-line command:
To crack WPA/WPA2 wifi networks, we will utilize the handshake packets. These are four packets transmitted between the router and the client when establishing a network connection. To capture packets on a specific network, we will use the syntax below.
Hacking other people's WLAN is illegal and unethical. This article is not about penetrating foreing WLANs but about learning someting about security. The techniques described here apply the encryption with WEP, not WPA. I have successfully installed the tools on Fedora Core 3 (FC3) and Fedora Core 4 (FC4). It is amazing how many believe that hiding their SSID or rejecting foreign MAC addresses is secure enough. The reality is somehow different: even a WEP-Encryption with 128 bits key is not secure. I recommend anyone having a WLAN to try the techniques from this article and find out how easy it is for someone with bad intentions to penetrate a wireless lan. This article focuses on installing and using the available tools to detect a wireless network, gather the required details and crack its WEP encryption: Installing and using kismet, aireplay, airodump and aircrack
Collecting encrypted packets
Cracking the WEP key from collected data
Common techniques and attacks on WLANs
For those who don't want to configure their Linux to do this there is pre-configured Live CDs worth looking at: The Auditor distro from Remote Exploit
1. References There are many source about this matter. I especially recommend these: How to crack WEP part 1
How to crack WEP part 2
How to crack WEP part 3
The remote exploit forum
The remote exploit Auditor Live CD
WHAX, another Live CD (currently merging with Auditor)
The aircrack tools-suite documentation
A certain number of attacks can be run on a WLAN to gather information or to speed up data-collection. If you don't use a Live CD it is required to have a WLAN driver that supports packet injection for these. The process of recompiling different drivers is described here. For MADWIFI I was able to recompile the drivers for version 20050707: ifconfig ath0 down rmmod wlan_wep ath_rate_onoe ath_pci wlan ath_hal find /lib/modules -name 'ath*' -exec rm -v \; find /lib/modules -name 'wlan*' -exec rm -v \; cd /usr/src wget -cvs-20050707.tgz wget -cvs-20050707.patch tar -xvzf madwifi-cvs-20050814.tgz cd madwifi-cvs-20050707 patch -Np1 -i ../madwifi-cvs-20050707.patch make && make install modprobe ath_pci On FC4 I have had some trouble with make due to a missing uudecode. This was solved by installing the sharutils package.
The speed of data collection can be increased by a so called deauth-attack: the clients are kicked off the access point and reconnecting. If the reconnection was traced it could be replayed in order to increase the data collection. aireplay/code> provides the functionality for these attacks: aireplay -0 2 to broadcast the DeAuthforces a reauthentication of a client aireplay -3 -x 600 -b &lp;ap MAC> -h ath0 replays the authentication packets airdump ath0 captures the data We would use following steps: start aireplay -3 ..... to capture: it says "got 0 ARP requests"
start aireplay -0 .... to De-Auth a client: after a while the number of ARP packet increases
start airdump to collect the data (for WEP128 about 500k packets seems right)
Some access points have a filter of allowed MAC addresses. The WEP key is not enough in order to connect to the wireless LAN in that case, but the filtering should not be used in the belief that MAC-addresses can not be spoofed. If supported by the driver (it is for Madwifi that I am using) this simple command will replace the MAC address: ifconfig hw ether
This guide will show you how to crack pre-shared key WPA/WPA2 networks using the Aircrack-ng tool, which is used to crack wifi passwords. We are going to discuss what are pre-shared keys, what is packet injection, then we will verify if your Network Interface Card (NIC) supports packet injection. Then we will go ahead and crack the WAP/WAP2 wireless network.
Packet injection (also known as forging packets or spoofing packets) is a technique used in computer networking to interfere with an established network connection by creating packets that appear to be part of the normal communication stream. Packet injections are mostly utilized in Man-In-The-Middle (MITM) attacks, which we shall do during the deauthentication phase.
We can use wifi thanks to a network interface card. A network interface card is a piece of hardware that allows the computer to communicate with other computers across a network. It is a hardware component that is installed in a computer and enables a dedicated network connection to the machine. To see your NIC details, type the command below.
This post is essentially a re-write of notes I took around 2 years ago. Learning to use aircrack-ng and break into my own router was both fun but also a bit shocking as to how easily someone could do this. The difficult part is guessing the password to a router due to processing power needed, but sniffing wifi networks is a trivial process. 2ff7e9595c
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