August 2016 – Insinuator.net

August 29, 2016 by Timo Schmid

Reverse Engineering With Radare2 – Part 2

Welcome back to the radare2 reversing tutorials. If you’ve missed the previous parts, you can find them here and here.

Last time we’ve used the rabin2 application to view the strings found inside the challenge01 binary to find password candidates. Based on the results we looked into the assembly to find the correct password. In this post, we’ll go through the next challenge and try out some of the features provided by radare2.

Continue reading “Reverse Engineering With Radare2 – Part 2”

Building

August 27, 2016 by Enno Rey

Considerations on DMZ Design in 2016, Part 1

I’m currently involved in a “DMZ Redesign” effort in a sufficiently large enterprise (800+ hosts in “the DMZ”) and I thought this might be an opportunity to reflect on some aspects of “DMZ networks” in a series of posts.

Continue reading “Considerations on DMZ Design in 2016, Part 1”

Breaking

August 21, 2016 by Enno Rey

Follow-Up on CVE-2016-1409 – IPv6 NDP DoS Vulnerability

This is a guest post from Jed Kafetz.

After seeing Christopher’s post I decided to create a proof using GNS3 and Virtualbox.
The aim is to perform the exact attacking using Antonios Atlasis’ Chiron tools and run a Wireshark packet capture to prove the hop limit drops below 255.

Continue reading “Follow-Up on CVE-2016-1409 – IPv6 NDP DoS Vulnerability”

Building

August 21, 2016 by Matthias Luft

ERNW Hardening Repository

Today we started publishing several of our hardening documents to a dedicated GitHub repository — and we’re quite excited about it! It took a while to develop a suitable markdown template to support all the requirements you have when you write a hardening guide, but we’re online now!

At the moment, only a few hardening guides are online, but that should continuously increase in the future.

Click here for the GitHub ERNW Hardening Repository!

Cheers,

Matthias

Breaking

August 19, 2016 by Timo Schmid

Reverse Engineering With Radare2 – Part 1

Welcome back to the radare2 reversing tutorials. If you’ve missed the intro, you can find it here.

The last time you got the challenge01 binary and your goal was to find the password for the login. Let’s see how the application looks like:

Continue reading “Reverse Engineering With Radare2 – Part 1”

Events

August 9, 2016 by Birk Kauer

Black Hat 2016 Summary

Just a few days ago I had a blast again at this year’s Black Hat. Some of the talks were really worth listening to, so I wanted to point them out and give a short summary.

USING UNDOCUMENTED CPU BEHAVIOR TO SEE INTO KERNEL MODE AND BREAK KASLR IN THE PROCESS – Anders Fogh & Daniel Gruss

They had the last slot at the last day of Black Hat which resulted in a kind of empty room, but in my opinion it was an awesome talk and I even had the pleasure to meet these two guys at our ERNW dinner.

The talk was about a very weirdly documented Intel instruction which does not check for privileges or throw exceptions:

Continue reading “Black Hat 2016 Summary”

Breaking

August 5, 2016 by Dominik Phillips

PFX Profiles in Microsoft’s System Management Server

In a recent assessment, we had to evaluate how Microsoft’s System Management Server (SMS) certificate management solution (CMS) stores and handles certificates. This question came up because sensitive, encrypted user certificates were to be stored in the SMS CMS. Due to the sensitivity of the handled certificates, we assessed the protection capabilities of the certificate management solution against extraction attempts from a local attacker with administrative privileges.

Continue reading “PFX Profiles in Microsoft’s System Management Server”

Breaking

August 3, 2016 by Timo Schmid

Reverse Engineering With Radare2 – Intro

As some of you may know, there is a “new” reverse engineering toolkit out there which tries to compete with IDA Pro in terms of reverse engineering. I’m talking about radare2, a framework for reversing, patching, debugging and exploiting.

It has large scripting capabilities, runs on all major plattforms (Android, GNU/Linux, [Net|Free|Open]BSD, iOS, OSX, QNX, w32, w64, Solaris, Haiku, FirefoxOS and even on your pebble smartwatch 😉 ) and is free.

Sadly, I had some problems finding good tutorials on how to use it, as the interface is currently a bit cumbersome. After fiddling around, I’ve decided to create a little tutorial series where we can learn together ;). Continue reading “Reverse Engineering With Radare2 – Intro”

Breaking

August 1, 2016 by Timo Schmid

Pentesting Webservices with Net.TCP Binding

Hi all,

Most of you that are pentesters may have already tested plenty of webservices using SOAP (Simple Object Access Protocol) for communication. Typically, such SOAP messages are transferred over HTTP (Hypertext Transfer Protocol) and are encapsulated in XML (Extensible Markup Language). Microsoft has developed different representations of this protocols to reduce the network load. As these representations/protocols aren’t really covered by typical tools out there, this post will show you some of them, and a proxy which can be used to simplify the testing.

Continue reading “Pentesting Webservices with Net.TCP Binding”