Blog.Bajiri

Vynae can be found on my GitHub . Vynae is a fleshed-out version of the original project, PidHunter. PidHunter was written for use in the Collegiate Cyber Defense Competition for tracing process IDs and gathering simple information about processes running in Windows Server environments. It started as a lightweight script that could be deployed on multiple servers and return consistent results. Mainly, it was used to detect Crowd Strike beacons after we discovered one of our servers had a beacon running on it. I wanted a way to pull up process and network information on the fly without needing to run multiple commands or tools. As such, it was hyper-specific to the situation I was in. While I originally tried to expand PidHunter to be useful in normal operations, it never really took off and was abandoned. Cue summer semester 2022 where I found I had a good amount of extra time before classes started in earnest. I needed to take a break from some other projects, and as I'm takin...

Code can be found here . For the upcoming CCDC regionals, I'll need to manage multiple different windows machines and servers. In the state competition, I had made a simple script that created some basic firewall rules mostly targetting Active Directory services. I then applied these to both the Windows server 2012 DC and the Windows server 2016 Hyper-V/Docker machine. The rules worked fine for both, especially considering that I decided to 'reduce my threat surface' by removing the net adapters from the Docker box. However, for regionals, I'll be managing multiple Active Directories, Exchange servers, and Docker at the very least.  Having a rigid script that applies the same firewall rules to every box won't work as well as it did in state, and creating a new script for each machine is too time-consuming. So I decided to create something that could detect what services and roles were installed on a given machine and then install the necessary firewall rules based o...

EDIT: Related video made for a class The CCDC qualifiers are over now, and my team got 1st! That being said, towards the end of the day, we noticed a lot of suspicious traffic coming to the AD box. While I couldn't figure it out during the competition, it turns out that the red team had been using the zerologon exploit . After we got back, I wanted to learn the ins and outs of this exploit in order to prevent myself from getting hit with it again at the next competition. Turns out, it's relatively easy to set up and execute using Impacket and Risksense' zerologon script.   For the testing environment, I have a Windows lab consisting of a 2012 AD, 2019 Email server, 2016 Docker/Hyper-V box, and Windows 10 and 7 machines. This setup is for CCDC prep and is designed to mirror the environments and machines used in the competition. I also have a kali box running on the same network as the Windows machines. This is what staged the attacks on the 2012 AD server.   To begin...

 It's been a while since I last updated this blog. School and CCDC have really been eating at my time. Contrary to the earlier style of the blog, I plan on keeping things more informal and casual. I'm transitioning this into more of an archival type of thing. A place to keep track of my notes and projects, as well as a place to document my thoughts at the time. Posts will be infrequent and likely quite random. For this post, I'm going to write about a little port scanner I wrote for an entry-level C course. As a little background, the only experience I have with C comes from C++ in a high school course some 7 years ago. So I was fairly excited to start this class and dig in a bit deeper.  The Project For our final project, we needed to create a program and present on it. I wanted to combine what I was doing in my networking class and my C class, so I went with something I thought would be simple enough. A port scanner.  Turns out, writing a port scanner when the most adva...

 PGPy is a library for python that enables the creation, storage, and encryption/decryption of PGP keys and files in python. Recently, in a small project to reacquaint myself with python, I used PGPy for key generation and encryption and decryption. That project can be found in my github at  https://github.com/lpowell . The goal of the project was to use command-line switches to control the program, and to provide basic encryption and decryption capabilities, along with rot13 and base64 encoding.  First, to load in a key use key, _ = pgpy.PGPKey.from_file(keyfilename) . This loads the key from either a binary or ASCII armored file. You can swap out .from_file for .from_blob , if you plan on using a key stored in a string or bytes object rather than a file. In my example code, I pull the key from a file, as I found it to be the simpler method.  Next, you'll need to open a file or create a string or bytes object that contains the message you wish to encrypt. We'll cal...