Alfredo Ortega and Anibal Sacco presented their findings in Absolute Software’s Computrace “persistent agent” as part of their ongoing research on BIOS rootkits at Black Hat USA 2009. Before I dig into some technicalities of the findings of Alfredo and Anibal, let me dispel any doubts about the disclosure process that we followed. The vendor was made aware of the report and upcoming presentation...

The pen testing world is constantly changing and threat actors are continually finding new ways to exploit organizations of all industries and sizes. In order for pen testers to safely and efficiently test and expose security weaknesses, they enlist the help of different tools. This article series from cybersecurity expert Ricardo Narvaja provides tips and tricks on reversing and exploiting...

In part 6, we learned how to understand a shellcode and its resolver. Now, we will continue with the analysis and resolution of abo2 in GHIDRA. Download ABO2 executable. The latest version is on Google drive. You can find the 7zip compressed file the executable (.exe extension), the symbols (.pdb extension), and the source code (.c extension). ...

As you may already know, when a penetration test or Red Team exercise in being executed, it is important to define the objective of the project. Sometimes it is not enough to get Domain Admin privileges, so the objective may instead be defined as access to a particular network segment or a user’s workstation where credentials and sensitive information could be stored. For the purposes of this...

Authored by: Marcos Accossatto On August 5th, ethical hacker and cybersecurity professional Antoine Goichot posted on twitter that three vulnerabilities he had discovered on Cisco AnyConnect (CVE-2020-3433, CVE-2020-3434, and CVE-2020-3435) were now public. The next day, he published a follow-up blogpost on github. That lead to an investigation by the Core Security team to find additional...