ShellStrike (WIP)

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A simple ruby gem to automatically identify valid SSH credentials for a server using custom username and password dictionaries, and (optionally) perform actions against hosts using the identified credentials.

This gem is intended to be used for educational purposes, and was written to assist with quickly identifying credential combinations for poorly documented internal servers. This gem is intended to be used against servers that you are authorised to 'attack' and the developer takes no responsibility for any issues which may arise due to misuse of this gem.


Add this line to your application's Gemfile:

gem 'shell_strike'

And then execute:

$ bundle

Or install it yourself as:

$ gem install shell_strike


Create a new instance of ShellStrike, passing in an array of ShellStrike::Host objects, an array of usernames and an array of passwords. i.e.

hosts = [''),'')

usernames = ['admin', 'root']
passwords = ['password', 'letmein']

shell_strike =, usernames, passwords)



  • Add support for user-defineable SSH arguments such as KexAlgorithms and key-based auth.
  • Add support for interactive SSH sessions.


After checking out the repo, run bin/setup to install dependencies. You can also run bin/console for an interactive prompt that will allow you to experiment.

To install this gem onto your local machine, run bundle exec rake install. To release a new version, update the version number in version.rb, and then run bundle exec rake release, which will create a git tag for the version, push git commits and tags, and push the .gem file to


Bug reports and pull requests are welcome on GitHub at[USERNAME]/shell_strike. This project is intended to be a safe, welcoming space for collaboration, and contributors are expected to adhere to the Contributor Covenant code of conduct.


The gem is available as open source under the terms of the MIT License.

Code of Conduct

Everyone interacting in the ShellStrike project’s codebases, issue trackers, chat rooms and mailing lists is expected to follow the code of conduct.