Internet Message Access Protocol (IMAP)

Port 143, 993 (IMAPS)

1) Nmap scan

nmap -p 143,993 --script imap-ntlm-info IP

2) Identify software version

openssl s_client -connect IP:993

3) Supported Capabilites check

python3 check_imap.py IP PORT

Python script

import imaplib
import sys

def check_imap_capabilities(host, port):
    if port == 993:
        mail = imaplib.IMAP4_SSL(host)
    else:
        mail = imaplib.IMAP4(host)
    
    print(mail.capabilities())

if __name__ == "__main__":
    if len(sys.argv) != 3:
        print("Usage: python3 script.py <host> <port>")
        sys.exit(1)
    
    host = sys.argv[1]
    port = int(sys.argv[2])
    
    check_imap_capabilities(host, port)

4) Connect to IMAP server

Connect

telnet IP 143

Authenticate

tag login user@localhost password

List conversation

tag LIST "" "*"

tag SELECT EXAMPLE

List the number of messages in the mail server

tag STATUS EXAMPLE

Read email

tag fetch 1 BODY []

Server capabilities

tag CAPABILITY

Logout

tag logout