433 MHz Doorbell RF Replay Hack

Name

Muhammad Ahsan

ID

F2019376007

“Hack 433 MHz Devices with a Raspberry and a RTL-SDR Dongle”

Hack 433 MHz Devices with a Raspberry and a RTL-SDR Dongle

Wireless things frequency is between 300MHz to 433MHz we find a frequency with the help of RTL-SDR Dongle

In this project we hack a Doorbell

We get frequency with RTL-SDR Dongle on AIRSPY SDR software

We get frequency of Doorbell at 433.912.500 we note this frequency where Doorbell rings

Then we connect our RTL-SDR Dongle with Raspberry

We connect RTL-SDR Dongle with raspberry pi to Do reply attack

We do reply attack using rpitx software in raspberry pi

We get this software from github

Source https://github.com/F5OEO/rpitx

Then we installed this software with these commands

git clone https://github.com/F5OEO/rpitx

cd rpitx

./install.sh

What kind of functions this software can perform

Now we know the frequency of the doorbell we execute the command to record the the frequency and then we reply that frequency

We use this command

“ rtl_sdr -s 250000 -g 40 -f 433912500 wiredoorbell_ring.iq ”

rtl_sd : which device we use

• s 250000 : sample rate
• g 40 : gain
• f 433912500 : frequency

wiredoorbell_ring.iq : file name where records are.

recording frequency of doorbell

For reply attack we use ./sendiq command

What kind of functions this command can perform

Then for reply attack we use this command

“ ./sendiq -s 250000 -f 433912500 -t u8 -i wiredoorbellring.iq ”

• s 250000 sample rate
• f 433912500 frequency
• t u8 file formate
• i wiredoorbellring.iq recorded file

“Then our doorbell rings without button just with the help of this command only”

The

End