Perl backdoor (client-server kind of). A backdoor composed of two components, a web shell and a local perl REPL.
If you'd like to contribute to the project or file a bug or feature request, please visit the project page.
The project is licensed under the GNU GPL v3 (tldr) license. Which means you're allowed to copy, edit, change, hack, use all or any part of this project as long as all of the changes and contributions remains under the same terms and conditions.