add the mixins for tcp and ftp
skimmed down, non-module dependent mixins for TCP client and Ftp client. neccesary for loginscanner workbug/bundler_fix
David Maloney
parent
087bcbdce1
commit
1f9cf8c68f
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@ -0,0 +1,276 @@
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require 'metasploit/framework/tcp/client'
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module Metasploit
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module Framework
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module Ftp
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module Client
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include Metasploit::Framework::Tcp::Client
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#
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# This method establishes an FTP connection to host and port specified by
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# the 'rhost' and 'rport' methods. After connecting, the banner
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# message is read in and stored in the 'banner' attribute.
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#
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def connect(global = true)
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fd = super(global)
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@ftpbuff = '' unless @ftpbuff
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# Wait for a banner to arrive...
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self.banner = recv_ftp_resp(fd)
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# Return the file descriptor to the caller
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fd
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end
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#
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# This method handles establishing datasocket for data channel
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#
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def data_connect(mode = nil, nsock = self.sock)
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if mode
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res = send_cmd([ 'TYPE' , mode ], true, nsock)
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return nil if not res =~ /^200/
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end
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# force datasocket to renegotiate
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self.datasocket.shutdown if self.datasocket != nil
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res = send_cmd(['PASV'], true, nsock)
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return nil if not res =~ /^227/
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# 227 Entering Passive Mode (127,0,0,1,196,5)
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if res =~ /\((\d+)\,(\d+),(\d+),(\d+),(\d+),(\d+)/
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# convert port to FTP syntax
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datahost = "#{$1}.#{$2}.#{$3}.#{$4}"
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dataport = ($5.to_i * 256) + $6.to_i
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self.datasocket = Rex::Socket::Tcp.create('PeerHost' => datahost, 'PeerPort' => dataport)
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end
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self.datasocket
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end
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#
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# This method handles disconnecting our data channel
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#
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def data_disconnect
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self.datasocket.shutdown
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self.datasocket = nil
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end
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#
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# Connect and login to the remote FTP server using the credentials
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# that have been supplied in the exploit options.
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#
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def connect_login(user,pass,global = true)
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ftpsock = connect(global)
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if !(user and pass)
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return false
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end
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res = send_user(user, ftpsock)
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if (res !~ /^(331|2)/)
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return false
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end
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if (pass)
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res = send_pass(pass, ftpsock)
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if (res !~ /^2/)
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return false
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end
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end
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return true
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end
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#
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# This method logs in as the supplied user by transmitting the FTP
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# 'USER <user>' command.
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#
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def send_user(user, nsock = self.sock)
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raw_send("USER #{user}\r\n", nsock)
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recv_ftp_resp(nsock)
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end
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#
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# This method completes user authentication by sending the supplied
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# password using the FTP 'PASS <pass>' command.
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#
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def send_pass(pass, nsock = self.sock)
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raw_send("PASS #{pass}\r\n", nsock)
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recv_ftp_resp(nsock)
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end
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#
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# This method sends a QUIT command.
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#
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def send_quit(nsock = self.sock)
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raw_send("QUIT\r\n", nsock)
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recv_ftp_resp(nsock)
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end
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#
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# This method sends one command with zero or more parameters
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#
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def send_cmd(args, recv = true, nsock = self.sock)
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cmd = args.join(" ") + "\r\n"
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ret = raw_send(cmd, nsock)
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if (recv)
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return recv_ftp_resp(nsock)
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end
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return ret
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end
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#
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# This method transmits the command in args and receives / uploads DATA via data channel
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# For commands not needing data, it will fall through to the original send_cmd
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#
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# For commands that send data only, the return will be the server response.
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# For commands returning both data and a server response, an array will be returned.
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#
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# NOTE: This function always waits for a response from the server.
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#
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def send_cmd_data(args, data, mode = 'a', nsock = self.sock)
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type = nil
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# implement some aliases for various commands
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if (args[0] =~ /^DIR$/i || args[0] =~ /^LS$/i)
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# TODO || args[0] =~ /^MDIR$/i || args[0] =~ /^MLS$/i
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args[0] = "LIST"
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type = "get"
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elsif (args[0] =~ /^GET$/i)
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args[0] = "RETR"
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type = "get"
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elsif (args[0] =~ /^PUT$/i)
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args[0] = "STOR"
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type = "put"
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end
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# fall back if it's not a supported data command
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if not type
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return send_cmd(args, true, nsock)
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end
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# Set the transfer mode and connect to the remove server
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return nil if not data_connect(mode)
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# Our pending command should have got a connection now.
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res = send_cmd(args, true, nsock)
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# make sure could open port
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return nil unless res =~ /^(150|125) /
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# dispatch to the proper method
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if (type == "get")
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# failed listings jsut disconnect..
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begin
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data = self.datasocket.get_once(-1, ftp_timeout)
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rescue ::EOFError
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data = nil
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end
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else
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sent = self.datasocket.put(data)
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end
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# close data channel so command channel updates
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data_disconnect
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# get status of transfer
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ret = nil
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if (type == "get")
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ret = recv_ftp_resp(nsock)
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ret = [ ret, data ]
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else
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ret = recv_ftp_resp(nsock)
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end
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ret
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end
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#
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# This method transmits a FTP command and waits for a response. If one is
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# received, it is returned to the caller.
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#
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def raw_send_recv(cmd, nsock = self.sock)
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nsock.put(cmd)
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nsock.get_once(-1, ftp_timeout)
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end
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#
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# This method reads an FTP response based on FTP continuation stuff
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#
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def recv_ftp_resp(nsock = self.sock)
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found_end = false
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resp = ""
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left = ""
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if !@ftpbuff.empty?
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left << @ftpbuff
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@ftpbuff = ""
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end
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while true
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data = nsock.get_once(-1, ftp_timeout)
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if not data
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@ftpbuff << resp
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@ftpbuff << left
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return data
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end
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got = left + data
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left = ""
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# handle the end w/o newline case
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enlidx = got.rindex(0x0a.chr)
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if enlidx != (got.length-1)
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if not enlidx
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left << got
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next
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else
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left << got.slice!((enlidx+1)..got.length)
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end
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end
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# split into lines
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rarr = got.split(/\r?\n/)
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rarr.each do |ln|
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if not found_end
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resp << ln
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resp << "\r\n"
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if ln.length > 3 and ln[3,1] == ' '
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found_end = true
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end
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else
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left << ln
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left << "\r\n"
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end
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end
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if found_end
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@ftpbuff << left
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return resp
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end
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end
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end
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#
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# This method transmits a FTP command and does not wait for a response
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#
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def raw_send(cmd, nsock = self.sock)
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nsock.put(cmd)
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end
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def ftp_timeout
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raise NotImplementedError
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end
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protected
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#
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# This attribute holds the banner that was read in after a successful call
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# to connect or connect_login.
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#
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attr_accessor :banner, :datasocket
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end
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end
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end
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end
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@ -0,0 +1,190 @@
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module Metasploit
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module Framework
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module Tcp
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module EvasiveTCP
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attr_accessor :_send_size, :_send_delay, :evasive
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def denagle
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begin
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setsockopt(Socket::IPPROTO_TCP, Socket::TCP_NODELAY, 1)
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rescue ::Exception
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end
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end
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def write(buf, opts={})
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return super(buf, opts) if not @evasive
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ret = 0
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idx = 0
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len = @_send_size || buf.length
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while(idx < buf.length)
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if(@_send_delay and idx > 0)
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::IO.select(nil, nil, nil, @_send_delay)
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end
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pkt = buf[idx, len]
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res = super(pkt, opts)
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flush()
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idx += len
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ret += res if res
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end
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ret
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end
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end
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module Client
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#
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# Establishes a TCP connection to the specified RHOST/RPORT
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#
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# @see Rex::Socket::Tcp
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# @see Rex::Socket::Tcp.create
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def connect(global = true, opts={})
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dossl = false
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if(opts.has_key?('SSL'))
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dossl = opts['SSL']
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else
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dossl = ssl
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end
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nsock = Rex::Socket::Tcp.create(
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'PeerHost' => opts['RHOST'] || rhost,
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'PeerPort' => (opts['RPORT'] || rport).to_i,
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'LocalHost' => opts['CHOST'] || chost || "0.0.0.0",
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'LocalPort' => (opts['CPORT'] || cport || 0).to_i,
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'SSL' => dossl,
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'SSLVersion' => opts['SSLVersion'] || ssl_version,
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'Proxies' => proxies,
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'Timeout' => (opts['ConnectTimeout'] || connection_timeout || 10).to_i
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)
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# enable evasions on this socket
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set_tcp_evasions(nsock)
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# Set this socket to the global socket as necessary
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self.sock = nsock if (global)
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return nsock
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end
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# Enable evasions on a given client
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def set_tcp_evasions(socket)
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if( max_send_size.to_i == 0 and send_delay.to_i == 0)
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return
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end
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return if socket.respond_to?('evasive')
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socket.extend(EvasiveTCP)
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if ( max_send_size.to_i > 0)
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socket._send_size = max_send_size
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socket.denagle
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socket.evasive = true
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end
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if ( send_delay.to_i > 0)
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socket._send_delay = send_delay
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socket.evasive = true
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end
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end
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#
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# Closes the TCP connection
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#
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def disconnect(nsock = self.sock)
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begin
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if (nsock)
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nsock.shutdown
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nsock.close
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end
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rescue IOError
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end
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if (nsock == sock)
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self.sock = nil
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end
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# Remove this socket from the list of sockets created by this exploit
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remove_socket(nsock)
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end
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##
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#
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# Wrappers for getters
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#
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##
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def max_send_size
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raise NotImplementedError
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end
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def send_delay
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raise NotImplementedError
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end
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#
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# Returns the target host
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#
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def rhost
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raise NotImplementedError
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end
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#
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# Returns the remote port
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#
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def rport
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raise NotImplementedError
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end
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#
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# Returns the local host for outgoing connections
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#
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def chost
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raise NotImplementedError
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end
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#
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# Returns the local port for outgoing connections
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#
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def cport
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raise NotImplementedError
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end
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#
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# Returns the boolean indicating SSL
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#
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def ssl
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raise NotImplementedError
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end
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#
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# Returns the string indicating SSLVersion
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#
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def ssl_version
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raise NotImplementedError
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end
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#
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# Returns the proxy configuration
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#
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def proxies
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raise NotImplementedError
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end
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protected
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attr_accessor :sock
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end
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end
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end
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end
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