How does one hack a wi-fi network?

Dennis Eichenlaub

Dennis Eichenlaub, former IT (2007-2013)

Répondu il y a 89w · L'auteur dispose de réponses 135 et de vues de réponses 88.4k

Réponse d'origine: What info is needed to hack nearby password protected wifi?

I’ll give you two answers. The first uses a trick.

It depends on the encryption algorithm used. There are 3: WEP, WPA, and WPA2. WEP was first, then they found a security bug and introduced WPA. WPA also had a security bug, which was fixed with WPA2. For quite a while when WiFi was new, some computers did WEP, but not WPA or WPA2. As a result, the service providers (Comcast, Verizon, etc.) got into the habit of setting the WiFi encryption algorithm to WEP. It was easy for them, because it created less hassle.

Unfortunately for us users, the WEP security bug is huge and easily exploited. Very briefly, a bad guy downloads a small program. The program listens to the WiFi for a while, then pretends to be some other computer on the network who has lost their key. The program asks for a copy of the key, which the WiFi router promptly delivers. Bingo! The bad guy is on your WiFi. WPA is harder to attack, but in the end it’s all the same. All one needs is a program that knows the security bug, and they get on your network.

So … if you aren’t using WPA2 encryption, anybody can quickly get onto your network with essentially no effort. It’s easy to tell if you are using WEP encryption. If your WiFi password is a long stream of characters, all of which are numbers or the letters A through F (either upper or lower case), you are using WEP. WPA2 was introduced in 2004, so all your computers and devices should be able to use it. Every WiFi network should use WPA2.

Now here’s the trick — I didn’t answer your question! These attacks don’t give the WiFi password. They just lets somebody on the network. These days, most service providers do a good job of assigning random WiFi passwords. If the WiFi password is printed on a sticker affixed to your provider’s gateway (modem) and you are using WPA2, you are good. A bad guy can only try one guess after another. In most cases, the time required isn’t worth the effort. Your password is secure.

However, if you purchased a separate WiFi router or if you changed the WiFi password, then your password is probably something easy to remember and easy to share with visiting family and friends. In that case, it’s possible a good guesser who knows something about you can guess your WiFi password without too much effort.

Many new WiFi routers can be set up to have two WiFi signals. You can have a private signal with a secret password that is hard to guess. You can have a second signal that is a guest signal. You can have either no password on the guest signal or a password that is easy to remember and share. Guest signals are safe. A person using a guest signal can get to the internet, but cannot connect to computers or printers on the private signal, and can’t see any of the information being sent over the private signal.

In summary - use WPA2 with a strong password. If you can, set up a guest signal with a password that’s easy to share with visitors. The worst that will happen is that a neighbor might guess your guest signal password and use some of your bandwidth. But they won’t be able to get into your computers, printers, and other devices hooked to your WiFi.

This is especially important with so many things hooking up to your WiFi. Security cameras, printers, smart thermostats, some music systems, and anything else that can be used with a smart phone APP need to be on a private network with a strong WiFi password.

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Subhadeep Chakraborty

Subhadeep Chakraborty, studied at St. Xavier's School, Burdwan (2013)

Répondu il y a 53w

Here is an easy way to get into other’s wifi network. It is not really a hacking tutorial but this app checks for vulnerability in wifi. If vulnerable then the app can try to connect by using automatic pin, or custom pin. Note: This app is for educational purposes only

Download the app from google play store

lien: WIFI WPS WPA TESTER - Android Apps on Google Play

Requirements for the app to work

  1. There should be no active mac filter on the wifi network. If filtre mac is present then this app will show error . In that case we need to add our mac address in the network . It is fairly easy if done with Kali Linux and many tutorials can be found on google
  2. The wifi signal should be strong, i.e you should be close to the source to connect with automatic pins.

The app interface is like this :

How does one hack a wi-fi network?

The signals that are marked green can be cracked using this app, with the help of automatic pin. The yellow and red ones cannot be cracked using this app.

This is a very basic tester app not meant for hacking. This app can be used to check vulnerability of one’s own network.

Hope it helps. Thanks for reading

Constance S. Trueman

Constance S. Trueman

Répondu il y a 10w

C'est possible, mais il est très difficile d'exploiter un appareil Android sans avoir un certain type d'accès physique à un moment donné. Android est devenu très strict et impénétrable sur le plan de la sécurité ces dernières années. Auparavant, vous pouviez envoyer un fichier multimédia malveillant contenant du code malveillant conçu pour exploiter la médiathèque Stage Fright. Il a profité de la vulnérabilité de dépassement d’entier, qui implique la saisie d’une valeur hors de portée pouvant entraîner une élévation de privilèges.

How does one hack a wi-fi network?

Obtenir les données dont vous avez besoin est une tâche ardue, mais pourquoi avez-vous vraiment besoin de telles données? il est illégal de fouiller dans les téléphones et les appareils des gens; dans la vie privée en général, mais nous devons tout de même être certains de ce dans quoi nous nous embarquons ces derniers temps. ne pouvons-nous pas être des tricheurs et être loyaux et honnêtes les uns envers les autres, la vie est courte et vous ne vivez qu'une fois; #YOLO. Il faut toujours compter avec ce dernier cas, dont on saura éventuellement quelles seront les données disponibles par la suite. Absolument

Naman Jha

Naman Jha, studied at Schools

Mise à jour il y a 48w

Réponse d'origine: What info is needed to hack nearby password protected wifi?

Sorry for late response.

The steps I tell you will work on every wifi either WPA2 or WPA security.

Wifi cannot be hacked by windows because it is not an open source.

You need to install Kali Linux on your computer which is easy.

Things you need :-

Wireless card (support promiscuous mode)

In this tutorial ALFA AWUS036His used ,you can find it on Amazon with cheap rates.

2. Access point with WPA2 and WPS enables

5 Steps Wifi Hacking – Cracking WPA2 Password:

1. Open our terminal (CTRL+ALT+T) and type

airmon-ng

How does one hack a wi-fi network?

this command will lists our wireless card that attached with our system.

2. The next step we need to stop our wireless monitor mode by running

airmon-ng stop wlan0

How does one hack a wi-fi network?

3. Now we ready to capture the wireless traffic around us. By running

airodump-ng wlan0

our wireless interface will start capturing the data.

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How does one hack a wi-fi network?

From the picture above, we can see many available access point with all the information. In the green box is our victim access point which is my own access point

Informations:

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

#Les données: 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.

4. From the step 3 above, we can find access point with encryption algorithm WPA2 and note the AP channel number. Now we will find out whether target AP has WPS enabled or not.

wash -i wlan0 -c 8 -C -s

How does one hack a wi-fi network?

if the WPS Locked status is No, then we ready to crack and move to step 5.

5. The last step is cracking the WPA2 password using reaver.

reaver -i -b –fail-wait=360

Because we already get the information from step 3 above, so my command look like this:

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

How does one hack a wi-fi network?

Conclusions:

It will take up to 7hrs depending upon your hardware.

1. WPA and WPA2 security implemented without using the Wi-Fi Protected Setup (WPS) feature are unaffected by the security vulnerability.

2. To prevent this attack, just turn off our WPS/QSS feature on our access point.

This will tell you the WPS pin by which you can connect to wifi .

Notes: Only practice this tutorial on your own lab and your own device. Hacking can be a crime if you don't know where to put it.

Warning : Try it on your own wifi network first.

Taken from 'hacking tutorial.com’

If this doesn't work for you then ask Adrián Lamo

Brandon Kearns

Brandon Kearns

Répondu il y a 194w

Réponse d'origine: What is an easy way to hack Wi-Fi?

[For those looking to bolster their network security and prevent these types of intrusions I typed a lengthy reply to a comment made under Dave Gordon' answer and I think it is worthy of a read as well]

The free and open-source 'Aircrack-ng' software suite is perhaps the most mature and widely used for this purpose. You will also need a wifi card/antenna that supports packet-injection capabilities and has a set of drivers that are patch-friendly for this purpose, which is generally why a Linux based OS is highly recommended. Some laptop manufacturers use wifi cards stock in their hardware that can be used, otherwise checkout the list of supported cards from the Aircrack-ng site, Kali Linux site, or BT5 site and you can grab a USB based device from that list for fairly cheap which will support all wifi technologies (B,G,N).

Note that, while it is fairly easy to Crack the older WEP/WPA1 encrypted networks (I've previously managed to do so in as little as 30 seconds quite some time ago), WPA2 is very secure and you will need a huge set of password Crack libraries to have a decent chance at success. Configuration for these tools takes time to learn as well (expect to issue commands from the command-line, manage hardware drivers and directly interact with the Kernel, and learn quite a bit about exactly how WiFi access points and the access clients communicate on a fine-grained technical level).

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Finally - a word to the wise is "be responsible", with all knowledge comes greater responsibility. Accessing/attempting to access an encrypted network without authorization is illegal and could get you in some serious legal troubles. Practicing on your home router(s) or friends' networks if they agree is fine to learn. Pen-testers and professionals will secure authorization in written contracts to perform these types of tests against businesses and clients to stay within the law.

Shashi Kant Sharma

Shashi Kant Sharma, Curious geek

Répondu il y a 226w · L'auteur dispose de réponses 62 et de vues de réponses 635.6k

Réponse d'origine: How easy is it to hack a password-protected Wi-Fi network?

Merci pour A2A.

The difficulty actually depends on type of encryption and scenario.

Type of encryption (AFAIK):
1. WEP
2. WPA
3. WPA-2
Both WPA and WPA2 allow for either EAP-based authentication, using Radius servers (Enterprise) or a Pre-Shared Key (PSK) (Personal)-based authentication.

Scenario (AFAIK):
Only one client, no client, strength of access point etc.

If the encryption is WEP and there are several clients ( at least one) then this type of Wi-Fi network is easy to hack (or crack). The difficulty and time taken to hack (or crack) the password will decrease as number of clients will increase. In case of WEP you have to wait for enough IVs to be captured and dumped.

If the encryption is WPA or Wpa-2 and there are several clients ( at least one) then this type of Wi-Fi network is hard to hack (or crack). In case of WPA and WPA-2 you have to wait for a three way handshake. If number of clients are higher then it may take less time to capture the handshake. In case of WPA and WPA-2 you have to use bruteforce or a dictionary attack. And if victim have used a strong password then it would be extremely time consuming process.

To hack (or crack) a Wi-Fi network for different kind of situations (like no client scenario) with the help of Aircrack-ng (and it's family of different tools) I would like to suggest:
1. tutorial [Aircrack-ng]
2. Main documentation

You may also like to use some other tools which may increase password hacking (or cracking) process. Then I would like to suggest:
BackTrack 5 Wireless Penetration Testing Beginner's Guide by Vivek Ramachandran and his "SecurityTube Wi-Fi Security Expert (SWSE)" course.

Social Engineering can also be used in any kind of encryption and situation :P.

Avertissement:
The information provided in the answer is for educational purpose only. I will not be responsible if the information provided would be used for any kind of unethical activities. The information should be used to secure other's or your own Wi-Fi network.

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