4553-invader-2.1.1.tar.gz – 4553 – Invader v2.1.1 is source code which can append parasitic executable code to any ELF binary which causes it it to send a shell to a remote host.

4553 – Invader v2.1.1 is source code which can append parasitic executable code to any ELF binary which causes it it to send a shell to a remote host. Uses TCP port 21317 by default.

You can download it from the following link: https://packetstormsecurity.com/files/download/30528/4553-invader-2.1.1.tar.gz

Source: https://packetstormsecurity.com/files/30528/4553-invader-2.1.1.tar.gz.html