10 January 2018

Privilege "escalation"The latest VMware Horizon vulnerability is via an attack vector that shouldn't be overlooked: bad Windows process handles management. In this article, you will find all the details around CVE-2017-4946 which was discovered and exploited by Martin Lemay during a pentest engagement.

May 04, 2016

In 2015, Alexey Tyurin from ERPScan presented at the Hack-In-The-Box Amsterdam conference [2][3] multiple attack vectors to defeat the widely used Oracle PeopleSoft (or PS) system. Many companies in various market verticals are relying on this massive and complex software to host confidential information about their employees, their students or even about the financial results of the company. Furthermore, many corporations are exposing this platform on the Internet, especially when relying on PS for career portals or student portals. A year later, I am still amazed to see publicly accessible systems or internal PeopleSoft deployments during our intrusion testing practice that are vulnerable to these common attack vectors. These deployments fail to deliver a useful result, putting the entire company workforce identity at risk. The following post will explain how to attack the PS_TOKEN, as well as describe our contributions to John the Ripper and oclHashcat in order to speed up the cracking process.

April 27, 2016

In this article, we will be looking at a new exploitation technique using the default OPcache engine from PHP 7.  Using this attack vector, we can bypass certain hardening techniques that disallow the file write access in the web directory. This could be used by an attacker to execute his own malicious code in a hardened environment.

April 21, 2016

As a penetration testers, we rarely have to find ‘zero day’ vulnerabilities or perform ‘bug hunting’ in order to compromise Windows Active Directory Domains. However, in one of these rare cases while performing an internal penetration test for a client, we had to do so.  Lansweeper is an inventory software that scans your network in order to gather system information such as patch level, network interfaces, resources status, etc.   We were fairly surprised during this test when we were able to access Lansweeper 5's dashboard with a regular user account.