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System Administration

Deploying Splunk Universal Forwarders via GPO

A guide to deploying the Splunk Universal Forwarder across Windows endpoints using a Group Policy Object and an Orca-generated MST transform file containing the deployment server and credentials.

Mar 28, 2020 3 min read
DFIR

A Tale of an MSBuild In-Line Task

This post covers an incident response analysis of a malicious MSBuild in-line task file containing an embedded Cobalt Strike beacon DLL, including the method used to extract and statically analyze the payload.

Feb 26, 2020 2 min read
Software Development

Stack Smashing at Home

A practical guide to disabling GCC and Linux kernel security protections including SSP, ASLR, exec-shield, and SELinux to reproduce wargame buffer overflow challenges in a local lab environment.

Jan 19, 2020 6 min read
Automation

Ansible User Account Provisioning

This post shows an Ansible playbook for automating new Linux host provisioning by creating user accounts, configuring sudoers, and deploying SSH public keys across home lab and cloud systems.

Dec 20, 2019 2 min read
Home Lab

Replacing the Default Splunk Web SSL Certificate

A step-by-step guide to generating an OpenSSL CSR, signing it with a pfSense Root CA, and configuring Splunk Web to use the resulting certificate chain via web.conf.

Nov 06, 2019 2 min read
System Administration

Working with Raw LVM Disk Images

This post demonstrates how to mount and unmount raw disk images containing LVM partitions on Linux using udisksctl, vgchange, and dmsetup, useful for CTF and DFIR analysis scenarios.

Aug 18, 2019 2 min read
System Administration

Slackware LVM over LUKS

A step-by-step guide to installing Slackware with full disk encryption using LUKS over LVM, covering disk sanitization, partition setup, volume group creation, and initrd configuration for UEFI boot.

Jun 16, 2019 6 min read
System Administration

Using NetworkManager with DNSMasq and Slackware

This post describes recompiling dnsmasq with D-Bus support on Slackware 14.2 by patching the Makefile and SlackBuild, enabling NetworkManager to manage dnsmasq as its DNS backend.

Jun 02, 2019 3 min read
Home Lab

Migrating and Upgrading Apache Guacamole to Docker

A walkthrough of migrating Apache Guacamole from a standalone install to a Docker Compose microservices setup with MariaDB, guacd, and guacamole containers, including database schema upgrade steps.

Mar 21, 2019 5 min read
System Administration

AutoFS with DHCP Classless Static Route Option

This post covers configuring AutoFS on Slackware to dynamically mount NFS and CIFS shares and using a Python script to generate RFC 3442 classless static route hex values for pfSense DHCP.

Mar 07, 2019 4 min read