Debian, forensics, Information, Linux Distributions, OpenSourceSoftware, Suricata, Ubuntu

Suricata 1.0.2 Debian/Ubuntu package

In stead of compiling Suricata over and over again on different hosts I have… I just made a debian package for my Ubuntu Lucid 10.04 systems.

Its a simple build, and Ill hopefully update it with time to incorporate different usage and install help etc.
Right now its just aimed at being a simple IDS using libpcap.

You can find suricata and other cool NSM stuff at my gamelinux PPA found here.

apt-get install suricata
cd /etc/suricata/ && wget http://rules.emergingthreats.net/open/suricata/emerging.rules.tar.gz
vim /etc/default/suricata
vim /etc/suricata/suricata.yaml
/etc/init.d/suricata start

Feedback and thoughts are welcome and needed 🙂 !

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Debian, Information, Linux Distributions, Security, Sguil, Snort, Suricata, Ubuntu

Debian/Ubuntu package of barnyard2

Barnyard2 is a fork of the original barnyard project. I used to debianize the original barnyard, but since BY2 is more up to date, I have switched.

It is hosted on my Ubuntu PPA, and you can find it here.

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daemonlogger, forensics, fpcgui, Information, Linux Distributions, Metasploit, OpenFPC, OpenSourceSoftware, Security, Ubuntu

FPCGUI -> OpenFPC

In early June, Leon Ward and I teamed up in Oslo chatting about his OpenFPC and my FPCGUI project. I met Leon for the first time in April 2009 at Sourcefires offices in Wokingham, UK, and I have chatted with him now and then on IRC etc. since then.

I started using Sourcefire 3D in December 2008, and the first thing I was missing was the lack of pcaps from the events that I got. The second was the real-time view that you get in Sguil (I can live without that though).

So I needed a second host that did full packet capture along side my new IPS/IDS. Just running tcpdump/daemonlogger/sancp is OK for a small installation, but carving out the sessions manually was taking time. I needed to script something that would take an easy interface, so I could quickly get a pcap from the whole sessions I was getting events from. So I was thinking of an API and a easy way to add this to the Sourcefire 3D WebGUI.

My PoC was FPCGUI (Full Packet Capture Graphical User Interface). It can take a query in the URL, search the flow data from its database and give you the sessions details if it exists. If you click on the session, you will get the pcap served straight in you face, and I choose to open my pcaps with wireshark. With a little grease monkey magic, this would have been an OK solution for satisfying my pcap needs working with SF3D.

I made my thoughts public in a blog post in September 2009 and started coding right away. I also discussed FPCGUI with Leon the day after I posted the blog. The first release that worked good enough for me was in January 2010. Leon released his project in May 2010, and I quickly saw that we where doing more or less the same. He had implemented the distributed node part, which I had not started to even draft, and I had the WebGUI and flowdata which gives more meaning and is more user friendly to the analyst.

So, instead of working on two separate projects (aiming for the same goal), we decided to join forces and merge the two projects. And as I thought that OpenFPC is a better name than FPCGUI, OpenFPC it is 🙂

I have merged my parts slowly into OpenFPC during the summer, with vacation time and changing job, I did not have much time for coding on the side. We also re-factored much of the code, file names etc., so getting thing to a working condition has been the main task.

As of the last weeks, I can now install OpenFPC and use it in the way that I want it again, like I did with FPCGUI. The plus is that I now have a command line interface, a distributed architecture (Not WebGUI friendly yet), and a way to automagically extract pcaps and files in it, for automatic analysis 🙂

To test my dream of automatic analysis, I used a setup similar to this earlier blog post where I more or less did the same. I carve the pcap with openfpc-client (which will come from an event from an IDS or nftracker), extract files with tcpxtract (or simular tools), scan files with ClamAV and also test md5/sha sums towards shadowserver, virustotal or wepawet. I tried some different infected and non infected PDF files. All files I had to test with was detected with ClamAV, even my home grown metasploit PDF. All known bad PDF files was detected with the md5/sha sum of the files towards the different services (shadow/VT/wepawet), but again, only ClamAV detected my home made metasploit PDF.
evil.pdf: Heuristics.PDF.ObfuscatedNameObject FOUND

So, now I will have more events to live with 🙂

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cxtracker, daemonlogger, Debian, forensics, Linux Distributions, OpenSourceSoftware, PADS, Security, Sguil, Snort, Suricata, Ubuntu

Ubuntu repo for sguil

I have spent the last week setting up a Ubuntu Launchpad PPA for my packages I used to hoste here on my blog.

The URL to my PPA is : https://launchpad.net/~ebf0/+archive/gamelinux

I pack the packages mainly for Lucid Lynx 10.04.
To try them out, you can add the following in /etc/apt/sources.list:
deb http://ppa.launchpad.net/ebf0/gamelinux/ubuntu lucid main
deb-src http://ppa.launchpad.net/ebf0/gamelinux/ubuntu lucid main

To add my key to you Ubuntu installation:
apt-key adv --keyserver keyserver.ubuntu.com --recv-keys 4B04D050

Then you should be able to apt-get update, and then apt-get install my packages 🙂

Please try them out and give me feedback!
You will find my howto on how to configure them here.

Happy F8’ing!

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Information, Linux Distributions, OpenSourceSoftware, Security, Sguil, Ubuntu

Ubuntu 10.04 and my sguil-client .deb package

Finally moving on to Ubuntu 10.04 LTS (lucid) and installing my sguil-client_0.7.0-3_all.deb package, I had to run into some problems…

$ ./sguil.tk
ERROR: Cannot fine the Iwidgets extension.
The iwidgets package is part of the incr tcl extension and is
available as a port/package most systems.
See http://www.tcltk.com/iwidgets/ for more info.

Read here if you want to know more.

Quick and dirty, this is how I fixed it after installing the sguil-client:

$ sudo apt-get remove tcl8.5

Install itk3 and itcl3 from here and here.
Then:

$ sudo apt-get install iwidgets4

Install the sguil-client_0.7.0-3_all.deb again, and Bob is your uncle!

I also pinned the packages, so that an upgrade would not b0rk things.
In /etc/apt/preferences.d/00Sguil:

Package: itcl3
Pin: release a=hardy
Pin-Priority: 900

Package: itcl3
Pin: release a=lucid
Pin-Priority: -10

Package: itk3
Pin: release a=hardy
Pin-Priority: 900

Package: itk3
Pin: release a=lucid
Pin-Priority: -10

Not sure if this is 100% correct, as I don’t have hardy in my sources.list, but it seems to work 🙂
For aptitude, use:

$ sudo aptitude hold itcl3 itk3

Enjoy!

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