mirror of
https://github.com/ChronosX88/PyNesca.git
synced 2024-11-22 13:12:18 +00:00
99 lines
3.8 KiB
Python
99 lines
3.8 KiB
Python
#!/usr/bin/env python
|
||
# -*- coding:utf-8 -*-
|
||
|
||
from core.prototypes.AbstractScanner import AbstractScanner
|
||
import ftplib
|
||
from ftplib import FTP
|
||
|
||
MAX_ERRORS = 3
|
||
|
||
|
||
class FTPScanner(AbstractScanner):
|
||
def __init__(self, timeout:"timeout", credentials:"credentials"):
|
||
self.__timeout__ = timeout
|
||
self.__credantials__ = credentials
|
||
|
||
def scan_address(self, host: 'ipv4_str', port: 'port') -> {'ftp_version', 'ftp_status', 'login', 'password'}:
|
||
result = self.ftp_anonymous_login(host, port, self.__timeout__)
|
||
if result['ftp_status'] == 'ok':
|
||
#Что-то делать с ошибками
|
||
return result
|
||
if not result['ftp_status'].startswith('530'):
|
||
return result
|
||
return self.ftp_bruteforce(
|
||
host, port, self.__credentials__, self.__timeout__)
|
||
|
||
@staticmethod
|
||
def ftp_anonymous_login(host, port, timeout):
|
||
'''Get version and check if anonympous login is enabled'''
|
||
result = {
|
||
key:None for key in ['ftp_version', 'ftp_status', 'login',
|
||
'password']
|
||
}
|
||
ftp_connection = FTP(timeout=timeout)
|
||
try:
|
||
version = ftp_connection.connect(host=host, port=port)
|
||
# Get something like "220 Twisted 16.6.0 FTP Server"
|
||
result['ftp_version'] = version.lstrip('220 ')
|
||
# Try to login as anonymous user
|
||
ftp_connection.login()
|
||
result['ftp_status'] = 'ok'
|
||
except ftplib.error_perm as e:
|
||
if str(e).startswith("530"):
|
||
result['ftp_status'] = 'ok'
|
||
result['anonymous_login'] = False
|
||
except ftplib.all_errors as e:
|
||
#status - error
|
||
result['ftp_status'] = str(e)
|
||
return result
|
||
finally:
|
||
ftp_connection.close()
|
||
return result
|
||
|
||
@staticmethod
|
||
def ftp_bruteforce(host, port, creds, timeout):
|
||
'''Attempt to brute force login/password pair'''
|
||
# We want maintain connection to speed up bruteforce
|
||
# but we also want to reconnect if necessary.
|
||
# That is why I use cred iterator to pick up new login/pass only when
|
||
# we need to.
|
||
result = {
|
||
key:None for key in ['ftp_version', 'ftp_status', 'login',
|
||
'password']
|
||
}
|
||
result['ftp_status'] = "error"
|
||
error_count = 0
|
||
it = iter(creds)
|
||
cred = next(it, "")
|
||
ftp_connection = FTP(timeout=timeout)
|
||
while error_count < MAX_ERRORS:
|
||
try:
|
||
# Connecting to server
|
||
ftp_connection.connect(host=host, port=port)
|
||
while cred and error_count < MAX_ERRORS:
|
||
user, password = cred
|
||
# Trying to log in
|
||
try:
|
||
ftp_connection.login(user, password)
|
||
ftp_connection.close()
|
||
result['ftp_status'] = 'ok'
|
||
result['login'] = user
|
||
result['password'] = password
|
||
return result
|
||
except ftplib.error_perm as e:
|
||
# Password was wrong, checking another
|
||
cred = next(it, "")
|
||
continue
|
||
except ftplib.all_errors as e:
|
||
error_count += 1
|
||
# Connection was dropped or another network error happened
|
||
# We must connection, error_count would help us to
|
||
# avoid deadlock on mumbling host
|
||
break
|
||
except ftplib.all_errors as e:
|
||
# Cannot reconnect, give up
|
||
break
|
||
finally:
|
||
ftp_connection.close()
|
||
return result
|