Shreder : A Powerful Multi-Threaded SSH Protocol Password Bruteforce Tool

Shreder is a powerful multi-threaded SSH protocol password brute-force tool.


  • Very fast password guessing, just one password in 0.1 second.
  • Optimized for big password lists, Shreder tries 1000 passwords in 1 minute and 40 seconds.
  • Simple CLI and API usage.


pip3 install git+

Basic Usage

To use Shreder just type shreder in your terminal.

usage: shreder [-h] [-p PORT] [-u USERNAME] [-l LIST] target
Shreder is a powerful multi-threaded SSH protocol password bruteforce tool.
positional arguments:
optional arguments:
-h, –help show this help message and exit
-p PORT, –port PORT SSH port.
SSH username.
-l LIST, –list LIST Passwords list.


Brute-forcing single target

Let’s brute-force my device just for fun.

shreder -u mobile -l passwords.txt

API Usage

Shreder also has their own Python API that can be invoked by importing Shreder to your code.

from shreder import Shreder

Basic functions

There are all Shreder basic functions that can be used to brute-force single target.

  • connect(host, port, username, password) – Connect single target by given address.
  • brute(host, port, username, dictionary) – Brute-force single target by given address.


Brute-forcing single target

from shreder import Shreder
shreder = Shreder()
password = shreder.brute(, 22, ‘mobile’, ‘passwords.txt’)