Logging Passwords on Linux

Hal Pomeranz tipped me off to a nasty little trick of using Linux's own auditing features and PAM to grab clear text passwords from users as they use sudo/su on the command line. Linux PAM (Pluggable Authentication Modules) are a flexible method of implementing...

Breaking into Infosec

tl/dr; There are a lot of ways to get into infosec. I’ll try to outline some of the things that have helped me along the way and provide some resources to help you. We recently had the pleasure of sponsoring BSides Kansas City. Side note: if you haven’t been, you...

SQLi Data Exfiltration via DNS

Did you know you can use DNS queries to exfiltrate data from a database via SQLi? No? Then continue reading! I'll walk through some techniques you can use to enumerate and exfiltrate data from a DB server via blind SQLi. On a recent web app test, I encountered a...

Maintaining Session States in .NET Apps With Burp

During a recent web app test, I encountered a situation when I would be randomly logged out of the application when running sqlmap. I wasn't manipulating any of the session cookies and the logouts happened at random times. I needed a way to detect when I got logged...

Capturing SQL Server User Hash with SQLi

On a recent external web app pen test, I found a possible SQL injection vulnerability using the Burp Scanner. One of the tests triggered an A record lookup for the Burp Collaborator server. In the screenshot below, we can see the test that triggered the finding....

Getting a Handle on Large Parameter Sets

During a recent web app engagement, I wanted to run some of the Burp Scanner automated checks, but I was confronted with several issues. First, this particular application did not respond kindly to manipulation of the session cookies. The application and its single...

Getting to the (Actual) Goal

While certainly not a new topic, there has been plenty of discussion recently around the goals of pen testing. Many believe that getting DA is the be-all and end-all of an engagement. Others think it might be a valid finding, but falls short of meeting the actual...

Beyond Net User – Part 2: DS Commands

In the previous post we discussed some of the limitations of Net commands. Most notably, the output limitation (doesn't show all groups) and it doesn't allow for flexible searching. In this post we'll discuss the DS commands to get around these limitations. DSGet,...

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