Year: 2007

Testing Adobe Flash Applications

owaspI received, via the webappsec mailing list, an excellent presentation from Stefano Di Paola, of OWASP Italy, on Testing Flash Applications that I thought I would share:

During the 6th OWASP AppSec Conference in Italy, I presented a research about testing for security vulnerabilities in Flash applications.

Abstract:
My work describes several security flaws in Flash Applications and bad habits in ActionScript coding, by analysing real world swf applications flaws and potential vulnerabilities that could lead to client side attacks. A new kind of attack called Cross Site Flashing is also explained.

Blog Entry:
http://www.wisec.it/sectou.php?id=464dd35c8c5ad

Pdf Version:
http://www.wisec.it/docs.php?id=5

Swf Version:
http://www.wisec.it/docs.php?id=6 – Don’t worry…it’s safe.

It’s quite in depth and is worth a read by anyone who anticipates Flash applications to turn up in their auditing or testing.

Suggested Blog Reading – Wednesday May 23rd, 2007

ReadWell my wife is out this week so maybe I’ll try and do some golfing in between book reviews and home lab work 🙂

Here’s the list:

Cisco IPS – Support of ‘minreq-‘ Style Signature Updates has Ended – Thought I’d put this out there in case you’re still using the old style signatures 🙂

Beginning with S288, customers must be running IPS version 5.1-5-E1 or later to install signature updates. Signature updates on sensors running IPS versions older than 5.1-5-E1 (i.e. sensors using the nomenclature ‘IPS-sig-S2XX-minreq-5.1-4’) are no longer supported.

The E1 Engine update for IPS Version 5.1(5) is available for download on Cisco.com. This release includes the E1 engine update package and the 5.1(5)E1 Service Pack and System/Recovery images which replace the 5.1(5) Service Pack and System/Recovery images.

nCircle buys compliance vendor Cambia – Sounds like a logical aquisition for nCircle to bolster their VA offerings.

Software vendor nCircle Network Security Inc. has acquired Cambia Security Inc., a provider of risk and compliance management software.

Cambia, based in Alpharetta, Georgia, sells a product called Cambia CM, which can be used to audit the configuration of computers on a network and help determine if they are in compliance with company policy or government regulations.

Cisco MIBs updated – Wow, great resource!

We recently updated the Cisco MIB package ZIP file for Unbrowse SNMP. You can download it for free here. (28.9 MB). The new MIB package contains all the latest MIBs released by Cisco on their public website. This package contains 1024 MIB Modules, and over 68,000 unique objects.

Google Launches Online Security & Malware Blog – I’ll have to add this to my watch list 🙂

Online security is an important topic for Google, our users, and anyone who uses the Internet. The related issues are complex and dynamic and we’ve been looking for a way to foster discussion on the topic and keep users informed. Thus, we’ve started this blog where we hope to periodically provide updates on recent trends, interesting findings, and efforts related to online security. Among the issues we’ll tackle is malware, which is the subject of our inaugural post.

Fresh From CEIC2007: Updated Presentations! – I’ll have to check these out.

CEIC 2007 NTFS AttributeId

CEIC 2007 NTFS Object IDS

CEIC 2007 NTFS Initialized Size

CEIC 2007 BitLocker

CEIC 2007 Vista

“Defeating” Whole Disk Encryption – Part 1 – I can’t wait for part 2.

An issue that we are going to continue to encounter is computers with whole disk encryption (WDE). I’m going to post a couple of techniques that have worked for me, and hopefully they’ll be of use to someone else out there. In this post, we will look at PGP’s WDE, although the techniques outlined here should be easily applied to other encryption schemes.

All I Need to Know About Security Programs I Learned from the Pawn – Well written post with an interesting take on security.

The foundation of the game is the chess board. The board can be compared to the business itself, with alternating colored boxes, some black and some white representing elements and challenges of the business. Rows and columns can be divisions or groups as well as levels of management and project silos. The capabilities of the pieces contrast nicely with the personality types found in management. Rooks can move straight up a vertical, taking a bottom up or a top down approach. Bishops can move diagonally across silos, touching upon varying verticals and management levels. Knights are the often coveted consultants, jumping between silos and levels in an attempt to address everyone and everything. Finally, King and Queen are two great examples of security leadership. The King is all-powerful, but chooses to stay within his local area, while the Queen moves all around.

These positions address the bigger picture. However, when an information security group with limited resources spends too much time building top heavy organizations, insecure applications and weak architectures slip through the cracks. It has been my experience that the pawn’s gradual, forward movement is what makes security work in the trenches. Assessment frameworks and complicated review processes work great, but sometimes, it is the basic approach that needs to be developed first. I have developed a simple, four step process that I use every day to manage the tidal wave of security decisions that flood my inbox.

Using VMware for malware analysis – If your organization is constantly fighting malware outbreaks then why not build a virtual lab to get familiar with handling the incidents?

Even if malware analysis is not your primary occupation, once in a while you may find yourself wondering about the nature of an unfamiliar malicious executable that crosses your desk. Starting your investigation with behavioral analysis — an observation of how the specimen interacts with the file system, the registry and the network — can rapidly produce useful results. Virtualization software such as VMware is incredibly helpful in this process.

Suggested Blog Reading – Tuesday May 22nd, 2007

ReadShort week in the office this week due to a conference I’m presenting at next Monday. Hopefully I’ll have time to prepare the Suggested Blog Reading on Monday morning.

Here’s the list:

Nemisis – Packet Injection Suite – It’s always handy to have packet crafting tools kicking around when testing IDS’ or firewall rules. Add this one to your kit.

Nemesis is a command-line network packet crafting and injection utility for UNIX-like and Windows systems. Nemesis, is well suited for testing Network Intrusion Detection Systems, firewalls, IP stacks and a variety of other tasks. As a command-line driven utility, Nemesis is perfect for automation and scripting.

Reversing a “ZLib-Obfuscated?” Network Protocol – I don’t even have to say anything…these guys provide great articles 🙂

We just wrapped up a security assessment on a commercial enterprise server/agent security product. I can’t get too specific here, but we did run into an interesting problem that we thought would be worth a post.
The application we were evaluating had a home-grown network protocol doing some interesting things worth investigating.

Analyzing an obfuscated ANI exploit – I wish I could take credit for this but the Andrew in question is someone else.

Some time ago one of our readers, Andrew, submitted an interesting ANI exploit sample. Unless you’ve been under a rock for the last couple of months, you heard about the latest ANI vulnerability.

Most of the exploits we’ve seen so far (and we’ve seen thousands of them) didn’t try to obfuscate the exploit code. The exploit code itself almost always contained a downloader that downloaded the second stage binary from a remote site and executed it on the victim’s machine.

As the exploit wasn’t obfuscated, running a simple string commands was enough to see the URL of the second stage binary.

Securityhacks show off security hacks – Thanks to LonerVamp for introducing me to a new blog to read 🙂

I don’t typically single out new links I add to my menu, but the blog at SecurityHacks has been posting some neat stuff. I still think there is “market bandwidth” for sites that show off tools or “how-to” sorts of postings in our niche blogosphere (although a forum or wiki may be more appropriate long-term information storage). They have gone over creating an SSH tunnel for Windows SMB connections ( I think if you’re going to this much trouble, may as well learn SSH transfers or implement a full VPN), SQL Injection scanners, and “recovering” Firefox stored passwords. There’s also mention of pwdumpx (not to be confused with pwdump or even fgdump…

Anti-Splog Evasion – “Splog”? Great…another phrase to confuse my parents.

I know I’m really going to kick myself for this one, as it will no doubt come back to haunt me, but I’ve been thinking about this one for a long time. One of the things that Blackhat SEO types do is they attempt to scrape other people’s sites that have original content (such as mine). Then they post that content on their site as their own, attempting to raise their own page-rank. Because the search engines aren’t smart enough to know who is the original author, the sploggers get higher in the page ranks.

A Practical Application of SIM/SEM/SIEM Automating Threat Identification – from the SANS Information Security Reading Room.

The Case of the Unknown Autostart – Good walk through to determine a problem.

A few weeks ago I installed an update to a popular Internet Explorer media-player ActiveX control on one of my systems. I knew from past experience that the plugin’s updates always configure an autostart, (an executable configured to automatically launch during boot, login or with another process) that I don’t believe serves any useful purpose, so as I had in the past, I launched Sysinternals Autoruns, set both Verify Code Signatures and Hide Signed Microsoft Entries in the options menu, pressed Refresh, found the autostart and deleted it. However, as I was about to close the window another entry caught my eye and caused my heart to stop

Paper about In-Place File Carving – I’m always on the look out for new and exciting papers to read 🙂

Golden G. Richard III, Vassil Roussev and Lodovico Marziale describe a file carver that is able to work on local and remote drives. They presented their paper In-Place File Carving at the 3rd annual IFIP WG 11.9 International Conference.

The article explains the whole concept of in-place file carving. The authors give the example of a 8 GB drive. The process of carving came to an abrupt end as the files produced exceeded the storage capacity of the 250 GB target drive. Beside the extra storage capacity the recreation of carved files takes a significant amount of time.

Courts Cast Wary Eye on Evidence Gleaned From Cell Phones – Good news for criminals…bad news for forensic examiners.

Another problem is that the market is glutted with so many different types of cell phones, so there will always be some models for which no existing forensic tools work. In that case, “Sometimes the best tools are hacker tools, as long as they’ve been thoroughly examined and reverse-engineered,” said Jansen, who helped write NIST’s official recommendations (.pdf) for do*****enting the chain of evidence and creating tamper-proof files when searching a cell phone.

Even the best forensic practices will face a daunting challenge as more complex mobiles become vulnerable to tampering before they’re seized as evidence. It’s relatively easy for an adversary with a bluetooth device to plant new addresses in a bluetooth-enabled phone’s contact list, or even place bogus calls from the phone. Keith Thomas, a cell-phone forensics expert with First Advantage Litigation-Consulting, said this is where the real problem for investigators will begin — when courts start to realize that evidence from cell phones isn’t any more foolproof than what’s found on computers.

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