Hosted by: Division Zero (Div0) – Singapore Cybersecurity Community

SHELLgym — Linux Forensics and Reverse Engineering basics

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    CyberSG TIG Collaboration Centre (formerly ICE71)

    71 ayer rajah crescent · singapore

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⚠️ REGISTRATION IS REQUIRED VIA THIS GOOGLE FORM ⚠️

ABSTRACT SHELLgym is the regular cybersecurity workout you have been looking for! Whether you’re just starting out and need some exercises, studying for a cert (hint: OSCP), looking at CTF challenges, or developing something cybersecurity-related (maybe your own automated tools?), SHELLgym aims to help you progress in picking up practical cybersecurity knowledge and skills. Come and go as you please, work on your own stuff with like-minded individuals, or just have fun during the workout!

AGENDA Thematic activities for this session

  • Triaging in Linux
  • Step-by step IDA
  • Step-by-step gdb
  • Guided walkthrough on selected real-life binary

⚠️ NOTE Bring your own laptops (and laptop chargers) with pre-installed Linux VM. Please also download IDA Free (Link to Guide) before the session.

VIRTUAL SHELLgyms in FEBRUARY Hosted on Discord, do approach KK or the Div0 Crew for access!

  • 7 Feb 2026, 1pm-3pm (SGT)
  • 21 Feb 2026, 1pm-3pm (SGT)
  • 28 Feb 2026, 1pm-3pm (SGT)

TRAINER KK Tan — Founder, counterShell As a mid-careerist convert to cybersecurity, Tan KK picked up his practical skills through getting OSCP certified and by participating in a variety of CTFs. In his career at CSIT, he performed a variety of red-teaming and vulnerability research roles and established the Cyber Training School at CSIT as the Lead Instructor. Besides the OSCP certification, KK is also OSCE and OSEE certified, and has a Bachelor’s degree in Social Science (Psychology). He now sees psychology as a field of study where you fuzz humans until they produce unexpected behaviour.

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