<?xml version="1.0" encoding="UTF-8"?><rss version="2.0"><channel><title>briancgx — Writeups</title><description>Writeups y notas de briancgx — AI Security Researcher @ Straiker y Red Team Operator. Máquinas, hacking práctico y seguridad de sistemas agénticos.</description><link>https://briancgx.me</link><language>es</language><item><title>EscapeTwo - HackTheBox</title><link>https://briancgx.me/writeups/htb-escapetwo</link><guid isPermaLink="true">https://briancgx.me/writeups/htb-escapetwo</guid><description>Máquina Windows AD «Sequel» (EscapeTwo) de HackTheBox: de un xlsx corrupto con credenciales a MSSQL y C2 con Sliver, escalando vía ADCS (ESC) con Certipy hasta Administrator.</description><pubDate>Sat, 25 Oct 2025 00:00:00 GMT</pubDate><category>htb</category><category>medium</category><category>active-directory</category><category>mssql</category><category>sliver</category><category>c2</category><category>adcs</category><category>certipy</category><category>bloodhound</category><category>privesc</category></item><item><title>Cicada - HackTheBox</title><link>https://briancgx.me/writeups/htb-cicada</link><guid isPermaLink="true">https://briancgx.me/writeups/htb-cicada</guid><description>Máquina Windows AD «Cicada» de HackTheBox: de null session y SMB a credenciales por spraying, y root abusando de SeBackupPrivilege para volcar SAM/SYSTEM.</description><pubDate>Thu, 23 Oct 2025 00:00:00 GMT</pubDate><category>htb</category><category>easy</category><category>active-directory</category><category>smb</category><category>password-spraying</category><category>winrm</category><category>sebackupprivilege</category><category>pass-the-hash</category><category>privesc</category></item><item><title>Grandma - Dockerlabs</title><link>https://briancgx.me/writeups/dockerlabs-writeup-grandma</link><guid isPermaLink="true">https://briancgx.me/writeups/dockerlabs-writeup-grandma</guid><description>Grandma es una máquina clasificada como &apos;Difícil&apos; en la plataforma Dockerlabs, donde se practica intensamente el pivoting y el uso de herramientas como socat y chisel.</description><pubDate>Sat, 17 Aug 2024 00:00:00 GMT</pubDate><category>dockerlabs</category><category>hard</category><category>linux</category><category>pivoting</category><category>tunneling</category><category>lfi</category><category>rce</category></item><item><title>Trust - Dockerlabs</title><link>https://briancgx.me/writeups/dockerlabs-writeup-trust</link><guid isPermaLink="true">https://briancgx.me/writeups/dockerlabs-writeup-trust</guid><description>This very easy machine required performing fuzzing to find hidden directories and obtain a user. Then, we used Hydra to brute force and get the SSH credentials. Finally, to escalate to root, we used the vim binary which had sudo permissions.</description><pubDate>Sat, 22 Jun 2024 00:00:00 GMT</pubDate><category>dockerlabs</category><category>easy</category><category>linux</category><category>bruteforce</category><category>privesc</category><category>web</category></item></channel></rss>