EvilBS is a bindshell for Linux that has AES-256 symmetric encryption, can operate in reverse connect mode, has SOCKS4 proxy support and more.
You can download it from the following link: https://packetstormsecurity.com/files/download/86473/evilbs.tar.gz
Source: https://packetstormsecurity.com/files/86473/Linux-Evil-Bindshell.html