In this lesson, we're going
to cover Bluejacking and Bluetooth spamming.
These are techniques that exploit Bluetooth technology
to send unsolicited messages or data to nearby devices.
Understanding these methods is essential
for both penetration testers
and those looking to protect their devices
from such attacks.
Bluejacking is the practice of sending unsolicited messages
to Bluetooth-enabled devices.
This can be done using the Bluetooth messaging feature.
Bluejacking is generally harmless
as it only involves sending messages,
but it can be annoying and disruptive to the recipient.
For example, you might send a contact card with a message
to nearby devices that have Bluetooth-enabled
and set to discoverable mode.
To perform bluejacking, you need a Bluetooth-enabled device
and an application that allows you
to send messages over Bluetooth.
First, ensure that Bluetooth is turned on
and set to discoverable mode.
Then, search for Bluetooth-enabled devices in your vicinity.
Select a device
and choose the option to send a contact or message.
Write your message in the contact name field and send it.
While Bluejacking is mostly used for harmless pranks,
it can be disruptive in environments
where multiple devices are targeted,
such as in a busy office or in public.
Bluetooth spamming on the other hand, is more intrusive.
It involves sending multiple unsolicited messages
or files to Bluetooth-enabled devices,
often in an attempt to overwhelm the recipient
or spread malware.
Bluetooth spamming can be more harmful
if it involves sending malicious files designed
to exploit the vulnerabilities in a recipient's device.
To conduct Bluetooth spamming,
you need a computer or mobile device
with Bluetooth capabilities and software
that can automate the process
of sending multiple messages or files.
One commonly used tool for this purpose is Wireshark.
First, use Wireshark to scan for nearby Bluetooth devices.
Note the addresses of the devices that you want to target.
Then use a script or a tool to send repeated messages
or files to these devices.
For example, a simple script
to spam messages might involve
repeatedly pinging the target device,
which can be annoying and potentially disruptive.
Both bluejacking and Bluetooth spamming rely
on the target devices being in discoverable mode.
To protect against these attacks,
users should keep their Bluetooth turned off
when not in use, set their Bluetooth
to non-discoverable mode when they need it turned on,
and just be cautious
about accepting Bluetooth pairing requests
from unknown devices.
So remember, Bluetooth jacking involves
sending unsolicited messages to Bluetooth devices
and it's generally harmless,
while Bluetooth spamming involves
sending multiple unsolicited messages or files
and can be more harmful.
Both rely on Bluetooth being in discoverable mode,
so keeping Bluetooth off
or in non-discoverable mode can help protect
against these type of attacks.