Initial commit for v1.0 using mitmproxy instead of twisted

Added a plugin system to Net-Creds so you can now add your own parsers,
api hook names might change between now and the offcial release
(will submit a PR to the original repo once completed)

The main MITM HTTP Proxy now uses mitmproxy which is a big deal, cuts
the code down by an insane amount, no more twisted! yay!

Basic plugin have been re-wrote for the new proxy engine

Since we are using mitmproxy we have out of the box support for SSL/TLS!

parsers/ftp.py

@@ -0,0 +1,31 @@
+from parsers.parser import Parser
+import re
+
+class FTP(Parser):
+	name = 'FTP'
+
+	ftp_user_re = re.compile(r'USER (.+)\r\n')
+	ftp_pw_re = re.compile(r'PASS (.+)\r\n')
+
+	def TCP_Parser(self, payload, src_ip_port, dest_ip_port):
+	    # Sometimes FTP packets double up on the authentication lines
+	    # We just want the lastest one. Ex: "USER danmcinerney\r\nUSER danmcinerney\r\n"
+	    num = payload.lower().count('USER')
+	    if num > 1:
+	        lines = payload.count('\r\n')
+	        if lines > 1:
+	            payload = payload.split('\r\n')[-2] # -1 is ''
+
+	    # FTP and POP potentially use idential client > server auth pkts
+	    ftp_user = self.ftp_user_re.match(payload)
+	    ftp_pass = self.ftp_pass_re.match(payload)
+
+	    if ftp_user:
+	        self.logger('FTP User: {}'.format(ftp_user.group(1).strip()))
+	        if dst_ip_port[-3:] != ':21':
+	            self.logger('Nonstandard FTP port, confirm the service that is running on it')
+
+	    elif ftp_pass:
+	        self.logger('FTP Pass: {}'.format(ftp_pass.group(1).strip()))
+	        if dst_ip_port[-3:] != ':21':
+	            self.logger('Nonstandard FTP port, confirm the service that is running on it')