VRFY USER ENUMERATION
With user and IP as input by the user:
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#!/usr/bin/python
import socket
import sys
if len(sys.argv) != 3:
print("Usage: vrfy.py <IP> <users_list>")
sys.exit(0)
with open(sys.argv[2]) as topo_file:
for line in topo_file:
line=line.strip()
# print(line)
# Create a Socket
s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
# Connect to the Server
connect = s.connect((sys.argv[1],25))
# Receive the banner
banner = s.recv(1024)
print(banner.decode())
# VRFY a user
payload='VRFY ' + line + "\r\n"
# print(payload)
byt=payload.encode()
print(byt.decode())
s.send(byt)
result = s.recv(1024)
print(result.decode())
# Close the socket
s.close()