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Liam Geyer

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78
Tags
9
Categories
55
Posts
Liam Geyer
78
Tags
9
Categories
55
Posts
  • HTB - Active Writeup

    👾 Machine OverviewThis is a writeup of the Windows machine Active from HTB, it’s an easy difficulty windows machine which featured credentials stored in insecure Group Policy Preferences, and Kerb...
      2024-06-01  
    • HTB 
     
    • Windows 
    • | AD 
    • | Kerberoasting 
    Read moreHTB - Active Writeup 
  • Cyberforce Conquer the Hill 2024

    I recently participated in the DOE’s Cyberforce Conquer the Hill Competition, a jeopardy style CTF, placing 2nd out of 77 players. This was my first time participating in one of the individual Cybe...
      2024-05-11  
    • CTFs 
    Read moreCyberforce Conquer the Hill 2024 
  • Temple Social Engineering Competition 2024

    I recently competed in Temple University’s Social Engineering Competition for the first time, along with some other CCSO members. We were able to take first place, with our B team placing 3rd! This...
      2024-04-21  
    • Competitions 
    Read moreTemple Social Engineering Competition 2024 
  • Decoding Hospital Pagers With an RTL-SDR

    Using a software defined radio to identify local hospital pager communications, and decode them in real time.

      2024-04-10  
    • Misc 
     
    • SDR 
    Read moreDecoding Hospital Pagers With an RTL-SDR 
  • SwampCTF 2024

    I recently participated in SwampCTF, a 2-day student-run CTF put on by the University of Florida’s Student Information Security Team. Our team was madeup of a handful of students from CCSO, and we ...
      2024-04-07  
    • CTFs 
    Read moreSwampCTF 2024 
  • Deloitte Cyber Threat Competition 2024

    I recently participated in Deloitte’s Cyber Threat Competition for the first time, placing second. The competition consisted of two rounds: round 1 had a security questionnaire and CTF, and round ...
      2024-02-17  
    • Competitions 
    Read moreDeloitte Cyber Threat Competition 2024 
  • Free Cloud Red Team Lab Infrastructure

    How to use Oracle’s free tier to setup free C2 infrastructure with a teamserver and redirector for lab setups.

      2024-02-12  
    • Security 
     
    • C2 
    • | Sliver 
    Read moreFree Cloud Red Team Lab Infrastructure 
  • VulnLab - Sync Writeup

    This is a write-up of the Sync machine on VulnLab by xct. This box involves anonymous rsync, cracking salted md5 hashes, and manipulating a backup script. UserHint: 12Explore how to crack salted m...
      2023-11-29  
    • Vulnlab 
     
    • Linux 
    • | PrivEsc 
    • | Password Cracking 
    Read moreVulnLab - Sync Writeup 
  • VulnLab - Baby Writeup

    This is a write-up of the Baby machine on VulnLab by xct. This box deals with anonymous LDAP enumeration, and exploitation of the SeBackupPrivilege to exfiltrate and crack user hashes. UserHint: L...
      2023-11-22  
    • Vulnlab 
     
    • Windows 
    • | AD 
    • | Password Spray 
    Read moreVulnLab - Baby Writeup 
  • Automating Club Announcements

    While serving as the secretary for CCSO, one of my weekly tasks was to aggregate everything the club was doing and distribute that amongst our various platforms. This quickly became very tedious, a...
      2023-09-03  
    • Development 
     
    • PowerAutomate 
    • | Automation 
    Read moreAutomating Club Announcements 
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