SQL Server Takeover Tool: Sqlninja

Sqlninja is a tool targeted to exploit SQL Injection vulnerabilities on a web application that uses Microsoft SQL Server as its back-end.Its main goal is to provide a remote access on the vulnerable DB server, even in a very hostile environment. It should be used by penetration testers to help and automate the process of taking over a DB Server when a SQL Injection vulnerability has been discovered.

SQL Server Takeover: Features

• Fingerprint of the remote SQL Server (version, user performing the queries, user privileges, xp_cmdshell availability, DB authentication mode)
• Data extraction, time-based or via a DNS tunnel
• Integration with Metasploit3, to obtain a graphical access to the remote DB server through a VNC server injection or just to upload Meterpreter
• Upload of executables using only normal HTTP requests (no FTP/TFTP needed), via vbscript or debug.exe
• Direct and reverse bindshell, both TCP and UDP
• DNS-tunneled pseudo-shell, when no TCP/UDP ports are available for a direct/reverse shell, but the DB server can resolve external hostnames
• ICMP-tunneled shell, when no TCP/UDP ports are available for a direct/reverse shell but the DB can ping your box
• Bruteforce of ‘sa’ password (in 2 flavors: dictionary-based and incremental)
• Privilege escalation to sysadmin group if ‘sa’ password has been found
• Creation of a custom xp_cmdshell if the original one has been removed
• TCP/UDP portscan from the target SQL Server to the attacking machine, in order to find a port that is allowed by the firewall of the target network and use it for a reverse shell
• Evasion techniques to confuse a few IDS/IPS/WAF
• Integration with churrasco.exe, to escalate privileges to SYSTEM on w2k3 via token kidnapping
• Support for CVE-2010-0232, to escalate the privileges of sqlservr.exe to SYSTEM

Platforms supported

Sqlninja is written in Perl and should run on any UNIX based platform with a Perl interpreter, as long as all needed modules have been installed. So far it has been successfully tested on:

• Linux
• FreeBSD
• Mac OS X
• iOS

Sqlninja does not run on Windows and we are not planning a port in the near future