Black Hat 2018 Session Notes


This year's Black Hat USA conference was pretty solid. Every timeslot had something available that I found interesting and often times I had to pick between competing sessions that captured my interest. Conference organization and crowd control was excellent again as usual. The mobile app this year had more features than in previous years, which I appreciate, though it does lose a few points for complicated and missing capabilities.

For a quick reference on the sessions and tool demos, see the Briefings and Arsenal pages


Review of Black Hat Advanced Infrastructure Hacking Training (2 day edition)


I had the chance to attend Black Hat this year and attend a 2 day of my choice. This year I took the Advanced Infrastructure Hacking - 2018 Edition: 2 Day session sponsored by NOTSOSECURE. It can be hard to find reviews of these trainings so I think it's worthwhile to post my thoughts here.


Rough Notes From RSA 2018 Conference Sessions


My notes from RSA 2018 sessions and labs. I've sanded off the rough-edges from my raw notes. Might still be a bit 'bumpy'


RSA 2018 - Highlights & Thoughts


When the opportunity to attend RSA came up, I decided to take a chance to see how it compares to other security conferences I've attended in the past (like DEF CON, BlackHat and BSides). After attending the 5 days of the conference I can say that RSA definitely has a different 'feel' to it than the other conferences and depending on what you are trying to accomplish, it may or may not be a good value for the $$$ spent.


Preparing an offline installation of Python 3.4 (+packages) for CentOS 6


We ran into an interesting situation on a legacy system where we were unable to allow outbound traffic on a CentOS 6 server to the internet, yet we needed to install Python 3.4 and the 'requests' library on the server.


Guide to Troubleshooting the Dreaded OpenVAS 8.0 503 Status Code (service temporarily down)


OpenVAS is an open source vulnerability scanner that I have used (and seen used) over the last few years. It's history goes back to 2005 as a fork of a previously open source (now commercialized) vulnerability scanner. This tool tends to be used when the dollar-cost of a commercial solution appears to outweigh the time and effort needed to maintain an effective OpenVAS installation.

The most common problem that I encounter using OpenVAS is the 503: service temporarily down error. When I see this message it almost invariably ties back to an expired self-signed certificate. I've seen this error enough times that I want to document the process in case I end up using this tool again in the future.


Reverse engineering a 'secure' system data collection tool


Awhile ago at a previous employer I worked with a VAR to do a system and software inventory of our workstations. They had written a custom application in C#.NET (for windows systems) and a bash script (for Mac OS) that captured the inventory data and encrypted it for us to email back to them. Sounds pretty straight forward, right?

I asked them about how the data would be protected on collection and being transmitted to them and surprisingly heard back from the VAR that their encryption mechanism 'cannot be disclosed publicly'. Hmm.... Before agreeing to run the programs and send back results, I performed a secure code review and found some interesting things about their collection tools.


yum killed during upgrade


This morning I tried to run security updates on one of my Centos VPS systems. Had to get creative since just running yum upgrade did not work. The yum process was killed unexpectedly:

Transaction Summary
==========================
Upgrade      19 Package(s)

Total size: 24 M
Is this ok [y/N]: y
Downloading Packages:
Running rpm_check_debug
Killed

Results: SSH Statistics Gathering Project


A month or so ago I started an SSH Statistics gatherer with the hope of identifying high-level configuration details of SSH-2/SSH-1.99 servers in the USA. In running the tool for a couple of weeks I identified 46,250 SSH Servers that meet the basic criteria (I'd like to do a survey of SSH Servers running older versions in the 1.x range at a later date). This post explains the results of the survey.


Chrome Extension Development: Options Page Does Not Load Javascript


Today I spent way too much time trying to debug an issue encountered while developing a Chrome extension. While attempting to create an Options page, I setup a separate 'options.js' file (to comply with security requirements that don't permit inline-JS) and found that the .js file would not load and that there were no error messages listed in the chrome developer tools view.