After quite some time and work, I’m happy to announce the new release of the Linux Heap Analysis Plugins, which are now part of the Rekall project, but not yet part of an official Rekall release, so you have to grab them manually.
This release fixes several bugs and adds the following features:
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Category: Building
printf(“Hello World!”) Part 2
As our journey to the new product continues we are facing the typical challenges of phase 2 in the software development life cycle, the design phase (see part 1 for the overview of the phases):
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Continue readingprintf(“Hello World!”)
ERNW has a new baby, so please say “hello” to the new ERNW SecTools GmbH ;-).
But why another ERNW company? Short answer: Because we want to contribute to changing the way how software is built today: insecure, focused on profit and sometimes made by people who ignore lessons from history. So how can we contribute in this space? Start changing it ;-).
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Continue readingVirtualized Training Environment with Ansible
As Kai and I will be holding a TROOPERS workshop on automation with ansible, we needed a setup for the attendees to use ansible against virtual machines we set up with the necessary environment. The idea was, that every attendee has their own VMs to run ansible against, ideally including one to run ansible from, as we want to avoid setup or version incompatibilities if they set up their own ansible environment on their laptop. Also they should only be able to talk to their own machines, thus avoiding conflicts because of accidental usage of wrong IPs or host names but also simplify the setup for the users.
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Continue readingWhy It Might Make Sense to Use IPv6 in Enterprise Infrastructure Projects
Looking at IPv6 deployment graphs like this one it becomes clear that IPv6 still is not widely deployed in enterprise space (the reason for the apparent oscillation in that curve is the difference between working days – where people use their office computers – and weekend where they preferably use their smartphones or their home equipment connected by means of broadband networks).
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Continue readingReading the BlueCoat FileSystem
You may remember our last post regarding the SGOS system and the proprietary file system. Since then, we got access to a newer version of the system (6.6.4.2). Still not the most current one (which seems to be 6.7.1.1) nor of the 6.6.x branch (which seems to be 6.6.5.1) though. As this system version also used the same proprietary filesystem (although it initially booted from a FAT32 partition), I decided to take a deeper look into this.
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Continue readingA Life Without Vendors Binary Blobs
This blogpost will be about my first steps with coreboot and libreboot and a life with as few proprietary firmware blobs as possible. My main motivation were the latest headlines about fancy firmware things like Intel ME, Computrace and UEFI backdoors. This post is not intended to be about a as much as possible hardened system or about coreboot/libreboot being more secure, but rather to be able to look into every part of software running on that system if you want to.
I first got curious about coreboot and libreboot at the 33C3 (Bootstraping a slightly more secure laptop). Then I searched for some old retired hardware at ERNW which I could flash coreboot to and found an old Thinkpad X61. Finding the X60 as officially supported hardware on the libreboot homepage, I have read through the libreboot and coreboot manuals to learn about the main coreboot part and it’s several payloads. Continue reading “A Life Without Vendors Binary Blobs”
Continue readingIPv6 RA Flags, RDNSS and DHCPv6 Conflicting Configurations Revisited
As you may know, we published a whitepaper discussing the behavior of different operating systems once they receive IPv6 configuration parameters from different sources two years ago. At that time, the results were quite a mess. We were curious whether the situation is still so “dire” like two years ago. We fired up the lab, updated the tested operating systems and performed the tests again. Continue reading “IPv6 RA Flags, RDNSS and DHCPv6 Conflicting Configurations Revisited”
Continue readingRelease of Glibc Heap Analysis Plugins for Rekall
I’m happy to announce the release of several Glibc heap analysis plugins (for Linux), resp. plugins to gather information from keepassx and zsh, which are now included in the Rekall Memory Forensic Framework. This blogpost will demonstrate these plugins and explain how they can be used. More detailed information, including real world scenarios, will be released after the talk at this years DFRWS USA.
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Continue readingAgile Development & Security
I’m a big fan of Chris Gates’ publications on DevOops and From Low to Pwned. The content reflects a lot of issues that we also experience in many assessments in general and assessments in agile environments in particular. In addition, we were supporting several projects recently that were organized in an agile way. In this post, I want to summarize some thoughts on how security work can/should be integrated into agile projects. Continue reading “Agile Development & Security”
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