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How to Hack Wi-Fi: Get Anyone’s Wi-Fi Password Without Cracking Using Wifiphisher

While password cracking and WPS setup PIN attacks get a lot of attention, social engineering attacks are by far the fastest way of obtaining a Wi-Fi password. One of the most powerful Wi-Fi social engineering attacks is Wifiphisher, a tool that blocks the internet until desperate users enter the Wi-Fi password to enable a fake router firmware update.

Social engineering attacks are powerful because they often completely bypass security. If you can trick an employee into entering a password into a fake login page, it doesn’t really matter how strong the password is. This is the opposite of cracking attacks, where you’re using the computer’s processing power to try a giant list of passwords incredibly quickly. By nature of the way this attack works, you cannot succeed if the password you are attacking is strong and isn’t included in your password list.

Not knowing how strong the password you are attacking is can be frustrating, because investing the time and processing power involved in a brute-force attack can make coming up dry feel like a huge waste of resources. Instead, tools like Wifiphisher ask questions about the people behind those networks. Does the average user know what their Wi-Fi router’s login page looks like? Would they notice if it was different? More importantly, would a busy user, cut off from the internet and stressed out but the disruption, still enter their password to enable a fake update even if they noticed the login page looked a little different?

Wifiphisher believes the answer is “yes.” To test that theory, the tool is capable of selecting any nearby Wi-Fi network, de-authenticating all users (jamming it), and creating a clone access point that requires no password to join. Any user joining the evil twin-like open network is served a convincing-looking phishing page demanding the Wi-Fi password to enable a firmware update, which is explained as the reason the Wi-Fi has stopped working.

The Firmware Update from Hell

To the target of a social engineering attack, the first signs of Wifiphisher look like a problem with the router. First, the Wi-Fi cuts out. They can still see the network, but every attempt to connect to it immediately fails. Other devices are unable to connect to the network as well, and they begin to notice that not just one device, but every Wi-Fi device, has lost connection to the network.

That’s when they notice a new network, with the same name as the old network, but requiring no password. After a few more attempts to join the protected network, they join the open network out of concern that their router is suddenly broadcasting a network without a password that anyone can join. As soon as they join, an official-looking webpage mentioning their router’s manufacturer opens and informs them that the router is undergoing a critical firmware update. Until they enter the password to apply the update, the internet will not work.

After entering the super-secure Wi-Fi password, a loading screen begins to crawl across the screen as the router restarts, and they feel a little proud for taking their router’s security seriously by installing this critical update. After a minute of waiting, their devices reconnect to the network, now more secure thanks to the update installed.

Easy Access with a Bossy Update

To a hacker, obtaining the passwords is as simple as selecting which network you want to target. After designating a target, Wifiphisher immediately jams all devices connected to the network, maximizing the chance that someone connected to the network gets frustrated and applies the fake update. Next, the target’s network information is cloned, and the fake Wi-Fi network is broadcast to make the target think their router is operating in some sort of unspecified update mode.

Devices connecting are immediately logged on a list of connected target, and the phishing page is tailored to match the manufacturer of the router by reading the first portion of the router’s MAC address. After tricking any one of the targets connected to the targeted network into entering the password, Wifiphisher informs the hacker while stalling for time. After sending the captured password, the target is cruelly occupied with both a fake update loading screen and fake reboot timer to buy time for the hacker to test the captured password.

What You’ll Need

For this attack to work, you’ll need a Kali Linux compatible wireless network adapter. If you’re not sure about which to pick, check out one of our guides on selecting one that supports monitor mode and packet injection.

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Aside from a good wireless network adapter, you’ll need a computer running Kali Linux, which you should first update by running apt update and apt upgrade. If you don’t do this, you will very likely run into problems during the Wifiphisher installation process below.

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uche okeke
the authoruche okeke
Uche is the founder of Freenaija. Digital marketer with a distinct fascination for composing content for audience to feed and acknowledge.

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