Author: gangrif

Migrating password hashes from Samba NT4 domain to Active Directory

It’s been a while since I’ve blogged about anything, but today we managed to solve a particularly important problem, that we were having trouble finding answers to, and I wanted to share it so that others might benefit. First, a little back story.  We’re currently running a Samba 3 domain, on RHEL, which emulates an…


S3 usage Statistics.

So I’ve recently decided to give S3 a chance, for media storage.  Mainly for the Iron Sysadmin Podcast episodes.  I’ve gotten one or two comments, not necesarily complaints, that episode downloads seem to tax my server.  It came down to bandwidth, and while I have some things to tackle to help that scenario, it was…


Cisco AnyConnect in Gnome on Fedora 25+

For work, I have to use Cisco Anyconnect as a VPN connection.  For a long time I would just use the Cisco AnyConnect official client for linux.  This software is problematic, buggy, and just plain out gives me heartburn.  So one day I came across OpenConenct, which is an open source alternative to the AnyConnect…


Freeing a 5th gen Fire tablet from its master.

I have sort of a history of bending android devices to my will.  It’s sort of what I do, and while I’m not going to claim credit for the work done in this post, I will say that that experience fueled it.  So as you read through this, bear in mind that I’m experienced, and…


Paypal scam.

I’ve been meaning to write about this for some time now.  Back in October of 2016, I found myself in posession of a Samsung S7 Edge that I really didn’t like, and a brand new shiney Google Pixel, that I did indeed like.  So I did the logical thing, right before Christmas, I tried to…


Hack My Derby v2.0

After last year’s success with Hack My Derby, a hacked up derby had that we created for Derby Con 5, I decided to create a sequel for Derby Con 6!  Much of the build is similar, so I’ll cover the differences.  If you want a more complete write-up on this project from start to finish,…


How to break 40 years of resiliency.

So back in the late 60’s, “The Internet” was in its infancy, several groups of technologists at various institutions were running a network called ARPANET.  ARPANET eventually evolved into what we call the internet today.  Systems connected to ARPANET, and todays Internet are each assigned an IP address, which is how other systems on the…


Lets Encrypt, Nginx proxy, CentOS 7

I’ve been interested in the Lets Encrypt project since I first heard about it, quite some time ago. It’s a cool idea, automatic free certificates for everyone!  I’ve been using startcom for the majority of my personal sites, minus swbcrawler, which I purchased a cheap commercial cert for.  A few months back, Lets Encrypt finally…


Hack My Derby

In 2011, Dave Kennedy and his crew started a little conference, called DerbyCon.  Named for its location, in Louisville, KY, it’s an awesome infosec con, with a great atmosphere.  Because of the name, derby hats have been a staple. Much of the staff wear them, and many attendees also wear them.  Many of them are…


NFC Ring

Yesterday, I received my long-awaited NFC ring in the mail.  And it is awesome.  Well, as awesome as you can expect it to be anyway.  I had backed them on kickstarter about a year ago, and now that they’ve worked through their issues, rings are coming to those who backed.  Its neat technology, and it’s…