autopwn

Microsoft have recently released an advisory "Microsoft Security Advisory (2286198)Vulnerability in Windows Shell Could Allow Remote Code Execution" for a new 0-day that is currently being exploited.

While it can be exploited via network or webdav shares, it is removable drives that are the most likely vector for exploitation. A big part of that is our old friend, autorun, that has been the cause of problems before.

If you haven't yet disabled autorun in your organization, I strongly suggest you look into it. Microsoft have some details on how to accomplish this here:

Also I recently stumbled across this little gem from ex-MS (now Amazon) Security guru Steve Riley:

Well, it turns out that Windows will override this setting if you insert a USB drive that your computer has already seen. I received an email from Susan Bradley that links to an article on Nick Brown's blog, "Memory sitck worms." Nick mentions the MountPoints2 registry key, which keeps track of all USB drives your computer has ever seen. I'll admit, I didn't know this existed! I'm glad Nick wrote about it, though.

Nick also includes a little hack that effectively disables all files named "autorun.inf." Interesting, but something in me prefers to make Windows just plain forget about all the drives it's seen. So now I will amend my instructions. In addition to what I wrote earlier, you should also write a small script, and execute it through group policy, that deletes the following key:

HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Explorer\MountPoints2

I hadn't seen that registry key mentioned before, but it looks well worth investigating...

Extreme Pentest

I recently came across this blog entry from the SNOsoft research team (aka NetraGard) describing in some detail a rather extensive penetration test for a 'mid-sized' bank.

The pentest was undertaken to not to identify all points of risk, but instead was to identify how deeply the pentesters could penetrate. The unusual approach and the use of social networking reconnaissance and social engineering that caught my eye:

In addition to FaceBook, we focused on websites like Monster, Dice, Hot Jobs, LinkedIn, etc. We identified a few interesting IT related job openings that disclosed interesting and useful technical information about the bank. That information included but was not limited to what Intrusion Detection technologies had been deployed, what their primary Operating Systems were for Desktops and Servers, and that they were a Cisco shop.

Naturally, we thought that it was also a good idea to apply for the job to see what else we could learn. To do that, we created a fake resume that was designed to be the “perfect fit” for a “Sr. IT Security Position” (one of the opportunities available). Within one day of submission of our fake resume, we had a telephone screening call scheduled.

We started the screening call with the standard meet and greet, and an explanation of why we were interested in the opportunity. Once we felt that the conversation was flowing smoothly, we began to dig in a bit and start asking various technology questions. In doing so, we learned what Anti-Virus technologies were in use and we also learned what the policies were for controlling outbound network traffic.

From there they were able to identify key employees and eventually email a dodgy trojan pdf that could evade the companies AV and eventually capture the DCs. Game Over.

I doubt many companies would have an external party go to this extreme to test their defences, even banks. I wonder how many companies would have sufficient defences to resist this type of assault?

They also have an interesting blog post entitled “FaceBook from the hackers perspective“ that is worth a read.

Twitter Trouble

While playing with my new ipad, I can across an interesting article on The Last Watchdog about the US Federal Trade Commission's complaint against Twitter.

I'd read about twitter's security breach in April last year where an employee's personal email account was hacked and provided admin passwords to the social networking site, but had somehow missed the earlier breach where apparently nothng more complicated than a brute force attack revealed the site's weak, lower case, common dictionary word administrative password!

From the article some of the major points from the FTC's complaint are Twtter's failure to:

  • Requiring employees to use hard-to-guess administrative passwords that are not used for other programs, websites, or networks
  • Prohibiting employees from storing administrative passwords in plain text within their personal e-mail accounts
  • Suspending or disabling administrative passwords after a reasonable number of unsuccessful login attempts
  • Providing an administrative login webpage that is made known only to authorized persons and is separate from the login page for users
  • Enforcing periodic changes of administrative passwords by, for example, setting them to expire every 90 days
  • Restricting access to administrative controls to employees whose jobs required it
  • Imposing other reasonable restrictions on administrative access, such as by restricting access to specified IP addresses
Additonally Twitter are "barred for 20 years from misleading consumers about the extent to which it protects the security, privacy, and confidentiality of nonpublic consumer information, including the measures it takes to prevent unauthorized access to nonpublic information and honor the privacy choices made by consumers. The company also must establish and maintain a comprehensive information security program, which will be assessed by an independent auditor every other year for 10 years".

Hackers, Fraudsters and Politicians.

The House Standing Committee on Communications have released the results of their findings into Cybercrime in a report entitled Hackers, Fraudsters and Botnets: Tackling the Problem of Cyber Crime.

I haven't had a chance to digest the near 300-page document yet, but news.com.au has reported some interesting excerpts from it:

Among its final 34 recommendations were:

— The creation of an around-the-clock cyber crime helpline.

— Changes to the law to make unauthorised installation of software illegal.

— Companies who release IT products with security vulnerabilities should be open to claims for compensation by consumers.

That last point seems to be the most potentially controversial and problematic, but I'll hold judgement until I've had a chance to read the entire report...

BYO Forensic Lab

After recently reading and learing about the requirements for setting up a Forensic laboratory, I did a little more research into the subject and came across a fairly recent article on csoonline.com entitled "How to Build Your Own Digital Forensics Lab - for Cheap". While the article is fairly brief and doesn't go into issues such as chain of custody or the capture of volatile data, the author does provide some cool tips on making a usb device read only and points to some free tools for imaging a suspects disk.

The article also has a link to the handy little "Secret Service's Best Practices For Seizing Electronic Evidence, Pocket Guide for First Responders" [pdf] which has tips such as photographing the screen before powering off a suspect machine and performing the power-down by yanking the power cord (and where appropriate removing the battery). For servers in a business it recommends not yanking out the power cord, but calling a pro and restricting access to avoid damaging the system, disrupting legitimate business and (of course!) reducing the potential for officer and department liability.

It's a cool little guide and an intersting insight into law enforcement procedures.

Top 10 Hollywood Stupid Hackers

News.com.au has a fun little gallery on the "Top 10 Hollywood Stupid Hackers" covering films from 'the Net' and 'Firewall' to 'Tron' and 'Jurassic Park'.

They did miss 'Swordfish', which showed that hacking was all about how quickly you can mash the keyboard...

Best quote of the lot: "I shouldn't have written all of those tank programs" by Kevin Flynn (Jeff Bridges) in TRON.

Wii Forensics

A recent article on Networkworld.com mentions how difficult it can be to recover information from smartphones and game consoles.

I can imagine smartphones are particularly difficult, given the constantly changing nature of the hardware in use and the proliferation of mobile operating systems such as Windows Mobile 7, Android, iphone OS, WebOS and BlackBerry OS. The modified or custom file systems can also be challenging as I've read that the xbox360 uses FATX and that the PS3 uses a proprietary version of ext2.

However a particular quote from the article that caught my eye was ""You can take a Wii onto the Internet and it doesn't save sites or browser history....If you type in a Web address and surf, 10 minutes later there's no record of it." Intrigued by this comment, a bit more digging came up with this paper [pdf] on Wii Forensics.

Dr Turnbull highlights the lack of internal storage (excluding the 256MB flash memory) and proprietary file system as being some of the difficulties in Wii Forensic analysis. The paper makes for interesting reading.

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