Breaking Into SharePoint Portal

Windows SharePoint Services (WSS)
- Base technology
- Free (with Windows Server)
- Consists of an ASP.NET web site and ISAPI filter

Microsoft Office SharePoint Server (MOSS)
- Built on top of WSS
- Not free
- Supports collaboration on MS Office documents

Security Aware?
- Gartner predicts SharePoint will replace network file shares
- Default security model: all site users have read access to all documents
- Big target – single repository for sensitive corporate data – salaries, phone numbers, customer lists,  passwords, strategic plans, etc.

Hacking the SharePoint ISAPI Registry
A potential EoP, but not interesting:
- Requires Terminal Services to be enabled with “NT4 compat mode”
- In that scenario, several Windows components have the same bug
- See “Web Server Extensions”, referenced in HKLM
- Check out usage of “Terminal Server User” SID throughout Windows

Hacking SharePoint with Google
- Thousands of public, internet-facing SharePoint sites have been created
- Use Google to identify configuration mistakes
- More info: http://tinyurl.com/4dccn9

Hacking SharePoint with NMap
- SharePoint servers have a distinctive network port signature
- Depends on firewall config, of course
- More info: http://tinyurl.com/3oykwp

Hacking SharePoint with RegEx
SharePoint RegEx Search
- http://www.codeplex.com/MossRegExSearch
- See blog post – http://tinyurl.com/4s49p3
- Avoid limitations of built-in SharePoint search (i.e., SQL ‘LIKE’ and ‘CONTAINS’ keywords)
- Instead, harness the power of regular expressions!
- Search for: strong passwords, credit card info, phone numbers, SSNs, etc.

Defeating OS Fingerprinting Using IpMorph

IpMorph is an Open Source project used to disguise OS-detection process performed using various techniques, such as, banner grabbing, ICMP replies, ISN profile, TCP headers, timeouts and other similar trends. These techniques are usually available in number of tools like Nmap, Xprobe2, SinFP, Ring2, p0f, Ettercap, etc.

Active Stack Fingerprinting

Passive Stack Fingerprinting

How IpMorph Works

Spoofing States

Filtering
– Stealth patch : Unmaintained as of 2002, GNU/Linux kernel 2.2-2.4
– Blackhole : FreeBSD, kernel options
– IPlog : Unmaintained as of 2001, *BSD
– Packet filter : OpenBSD
Host TCP/IP stack tweaking
– Ip Personality
– Fingerprint opt
– Fingerprint scrubber
– OSfuscate
Host TCP/IP stack replacement (proxy behaviour)
– Honeyd
– Packet purgatory / Morph
Integrated Tools
–IpMorph (Core)
–IpMorph Controller
–IpMorph Personality Manager
–IpView (IpMorph GUI)
Portability
–GNU/Linux
–BSD, Mac OS

IpMorph General Architecture