Blog | Techniques

Weaponization of Nessus Plugins

Posted on February 06, 2018Link 

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Overview During a recent internal penetration test, the need arose to exploit a Java two-stage deserialization vulnerability. This post will walk through how to twist a Nessus plugin, meant to test only for the existence of an RCE vulnerability, into a weaponized exploit that can be utilized to attain a reverse shell on your own attacking server. This was necessary...Continue reading 

Exploiting Custom Template Engines

Posted on January 25, 2018Link 

Introduction When performing an application assessment one of the areas within an app I pay particular attention to is any ability to define custom templates. By this I mean functionality that extends the ability to generate custom, dynamic, report, email, and document structures to application users. This functionality can often be exploited because of how dynamic these functions are required...Continue reading 

Using Python To Get A Shell Without A Shell

Posted on October 27, 2017Link 

Introduction Many times while conducting a pentest, I need to script something up to make my life easier or to quickly test an attack idea or vector. Recently I came across an interesting command injection vector on a web application sitting on a client's internet-facing estate. There was a page, running in Java, that allowed me to type arbitrary commands...Continue reading 

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