I’m Marcus, and welcome to my little corner on the Internet ^_^ I started this blog to document my learning progress in cybersecurity, and it also acts as a reference for when I have to look up something that I’ve done before.

I play CTFs with RE:UN10N and you can find my other writeups on our GitHub.

Workshops / Presentations / Talks

• RE:UN10N Sharing Session - Writing Your First Burp Extension [GitHub]
• CSLU 2025 @ UTM - Breaking Access Control and Authentication in Web CTFs [GitHub]
• more to come…

CTFs

• CYBER SEA Games 2025 (/w hikki, zeqzoq, & w6rstmvn)
• Siber Siaga Code Combat CTF Finals (/w whymir)
• CYDES 2025 Badge to Breach: ICS Cyber Siege Finals @ takde kerja (/w jy & capang)
• UM Cybersecurity Summit (UMCS) CTF Finals @ USM Biawaks (/w Selina & Adrian)
• BlackBerry CTF 2025 @ USM Biawaks (/w Selina and Naomi)
• and other online CTFs…

Created Challenges

• Mobile hacking challenges for Girls in CTF 2025 [GitHub]