Bold Statements
So we got these shiny new BlackBerry Q10 and Z10 device laying on the desk one morning. It’s my first BlackBerry, I have to admit, but never the less, the hole wushy GUI and touchy glass stuff wasn’t my main concern, instead i took a look at the stuff going on while you connect the phone (do i have to call it blackberry? its a phone, isn’t it?) to your computer.
Continue reading “BlackBerry 10 USB Modes”
Continue readingWhen teaching courses on topics like Reverse Engineering or Malware Analysis we always emphasize the need to minimize unneeded work. Because reversing an unknown binary is a time consuming and complex process, tools that simplify the RE process are invaluable when working under time pressure. In this blogpost series I will present multiple tools and techniques that can help to reverse an unknown binary. Please note that these articles do not contain cutting edge research but rather target at newcomers. However, I hope to also provide some useful and interesting information for moreexperienced practitioners.
Continue reading “Reverse Engineering Tools Part 1: BinDiff”
After his great presentations on IPv6 Extensions Headers and security problems related to fragmentation we had invited Antonios Atlasis to Heidelberg to give this workshop at ERNW. It was a great experience with many fruitful discussions between the participants (mostly security practitioners from very large organizations planning to have their Internet edge IPv6 enabled within the next 6-12 months) and him/us. Antonios thankfully decided to make his slides and scripts available for those interested in further research on the topics (it should be noted that the scripts have not been tested thoroughly and he’s happy to receive feedback of any kind at antoniosDOTatlasisDOTgmailDOTcom). Today Marc (Heuse) gives his workshop on pentesting in the IPv6 age. Hopefully such events help to move things into the right direction in the IPv6 security space…
Best
Enno
Continue readingIn the course of a current virtualization research project, I was reviewing a lot of documentation on hypervisor security. While “hypervisor security” is a very wide field, hypervisor breakouts are usually one of the most (intensely) discussed topics. I don’t want to go down the road of rating the risk of hypervisor breakouts and giving appropriate recommendations (even though we do this on a regular base which, surprisingly often, leads to almost religious debates. I know I say this way too often:I’ll cover this topic in a future post ;)), but share a few observations of analyzing well-known examples of vulnerabilities that led to guest-to-host-escape scenarios. The following table provides an overview of the vulnerabilities in question:
Continue reading “Analysis of Hypervisor Breakouts”
After being on the market for a few months now, Microsoft started quite a large advertising campaign in Germany for its new Surface RT . We had a comprehensive look at the new tablet PC and here are a few thoughts and impressions:
Running a slightly reduced ARM version of Windows 8, I heard somebody calling it “Windows 8 Home”, which in comparison to older versions hits the spot, Microsoft offers an easily usable interface. Software is reduced to market apps (the minimal run level on a plain Windows is 0, any, and 8, Microsoft, on Windows RT), so you can’t just install your favourite app, or can you?
Continue reading “Microsoft Surface RT, a quick insight”
Just a quick update here: Ivan (who gave the magnificent Virtual Firewalls talk at Troopers recently) blogged about this and some guy added some feedback from an environment with Cisco FEX and “one of the server guys start[ing] a Citrix Netscaler” ;-). See the second comment to his post.
This shows, once more, that the dependencies of various technologies (and what they are used for) must be well understood in cloud/virtualized environments. Complexity … but who do we tell. Y’ all know that, right?
best
Enno
Continue readingThe gritsforbreakfast blog post making the rounds on the Liberation Tech mailing list about security of Apple’s iMessaging service is gaining quite some attention. The post refers to a CNET article on how the iMessage service “stymied attempts by federal drug enforcement agents to eavesdrop” conversations due its end-to-end encryption and commends Apple for protecting the user’s privacy while pointing out that Gmail and Facebook Messaging don’t. However, I disagree on some points of the blog post and therefore want to discuss them here.
Continue readingLast week Rapid7 posted an interesting analysis of the Amazon S3 storage system: Apparently roughly one out of six S3 buckets (a bucket is, simply said, a kind of folder) is accessible without any authentication mechanism. Accessing those files, the Rapid7 guys were able to download a wide range of data, also comprising confidential information such as source code or employee information, comparable to past research for other platforms (see also this presentation I gave on some of the biggest Cloud #Fails)
Continue reading “Thoughts on Cloud Governance, Part 1”
As you may already be familiar with some of our previous work which was mainly focused on isolation issues of hypervisors, we also want to present you an issue concerning availability in Cloud environments. This issue was already covered in some of our presentations, but will be explained in greater detail in this blog post.
Continue reading “BPDU Guard: Bringing Down Infrastructures”
Recently we took a look on Ciscos XMPP client, called Cisco Jabber. The Client is used in combination with Ciscos Unified Communication Server (CUCM) and Ciscos Unified Presence Server (CUPS). Only the latter one is used for XMPP communication.
We built a small lab setup with this components (CUCM, CUPS and the Win7 Client) and watched the client working. Continue reading “A Word on Cisco Jabber”
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