Inou (pronounced as "I know you") is a tool to discover the service behind a specific unknown port. It performs an active scan trying to communicate with the service using multiple protocols (even concurrently). Inou is easy to integrate in bigger frameworks.

Inou can perform the requests over SSL, UDP and TCP. The following are the supported protocols and applications:

• HTTP
• DNS
• SIP
• RTSP
• FTP
• SMB
• SMTP
• SNMP
• TELNET
• SSH
• SIP
• ZMQ
• RABBITMQ

Moreover it supports the detection of custom protocols based on JSON, XML or binary data.

$ python3 inou.py -h
usage: inou.py [-h] [-u] [-s] [-p] [-d] ip_address port

positional arguments:
  ip_address      Target ip address where the service is installed
  port            Target port address where the service is listening

optional arguments:
  -h, --help      show this help message and exit
  -u, --udp       Use UDP instead of TCP
  -s, --ssl       Use SSL sockets (default: False)
  -p, --parallel  Use multiple threads (default: False)
  -d, --debug     Enable debug prints

$ python3 inou.py 127.0.0.1 4443 --ssl -p
Result: HTTP/SSL 

Adding the support for a new protocol is enough simple. You have just to implement a new method in the class Inou called is<protocol_name_uppercase> (e.g. isFOO). Then you call getresponse method checking the result. The function returns an array of byte, thus use decode() if you want to work with strings.

GPLv3