In this lesson,
we're going to talk about the Evil Twin attack
and the tool WiFi-Pumpkin,
which you can use to simulate this type of attack.
First, let's define the Evil Twin attack.
In this type of attack,
the attacker sets up a rogue Wi-Fi access point
that mimics a legitimate one.
The idea is to trick users into connecting
to the fake access point,
thinking that they're connecting to the real one.
Once connected, the attacker can intercept
and manipulate the victim's traffic,
making this a form of an on-path attack,
which used to be called a man-in-the-middle attack.
This attack can expose sensitive information like usernames,
passwords, or any unencrypted data that the user transmits.
Let's go through an example really quick.
Imagine you're in a coffee shop
where the WiFi network is named Coffee_WiFi,
and an attacker can set up a rogue access point
with the same name Coffee_WiFi.
Since most users
won't inspect the network details carefully,
they may unknowingly connect to the attacker's fake network.
The attacker can now intercept the user's traffic,
steal login credentials, or even inject malicious content
into the webpages the user visits.
Now, let's discuss WiFi-Pumpkin.
WiFi-Pumpkin is a powerful framework written in Python
that helps us create a fake access point,
making it easier to perform an Evil Twin attack.
WiFi-Pumpkin allows us to clone the SSID
of the target network, create a phishing portal,
and even manipulate DNS settings
to redirect the victim's traffic to a malicious site
or capture data in transit.
For example, once we set up the fake access point
using WiFi-Pumpkin,
we can employ the tool to capture data
from victims who connect to it.
It also allows us to manipulate traffic
by injecting fake login pages to steal credentials.
Imagine that we're targeting
a public login page like FreeAirportWiFi.
By cloning this SSID with WiFi-Pumpkin,
we can capture any credentials entered
into our fake login page.
WiFi-Pumpkin also integrates with tools like SSLstrip
to downgrade HTTPS, traffic to HTTP.
This makes it easier to steal sensitive information
even when users think they're on a secure connection.
The tool provides several modules
to extend its functionality like packet sniffing,
DNS spoofing and captive portals
to further enhance the attack.
So, remember, in an Evil Twin attack,
attackers rely on users not being vigilant
about the Wi-Fi networks that they connect to.
Tools like WiFi-Pumpkin make it easier
for penetration testers, and unfortunately attackers,
to simulate and carry out this kind of attack.
Using this tool can help us understand
the risk and mitigate them through security measures
like using VPNs, avoiding open WiFi networks,
or ensuring strong encryption
and proper certificates are in place.