Compass Security Blog

Offensive Defense

Author: Nicolas Heiniger

No need to break in, use the backdoor

The idea Some time ago I read a tweet about hunting so-called “sticky-keys backdoors”, referencing a presentation at DEFCON 24, https://www.youtube.com/watch?v=EAYtRQKfna0 In addition to the presentation, the team released a tool called “Sticky Keys Slayer” that is publicly available on GitHub, https://github.com/linuz/Sticky-Keys-Slayer/ The sticky-keys backdoor is using a simple trick. On a Windows system, it is possible […]

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Write-up: BlackAlps Y-NOT-CTF

The BlackAlps 2017 security conference took place this week in Yverdon-les-Bains: https://www.blackalps.ch. A small delegation of Compass Security was here to present a web application security workshop and also take part in the Y-NOT-CTF. You’ll find below a write-up of the challenges we were able to solve. Fun : Beautiful Alps This was probably the […]

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Write-up: Smarttomcat2

Following the Insomni’hack 2017 teaser where the Smarttomcat1 challenge was available, a second version of the same challenge was proposed. Good write-ups for Smarttomcat1 may be found at https://ctftime.org/task/3308. To quickly summarize, one had to abuse a search function to access a tomcat manager page with default credentials. The challenge looked very similar, when performing a […]

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