Blog.
CTF write-ups, security notes, and honest reflections on learning — cyber security, web development, and life as an informatics student.
![PicoCTF 2024 — buffer overflow 1 [Binary Exploitation]](https://images.unsplash.com/photo-1526374965328-7f61d4dc18c5?ixlib=rb-4.0.3&auto=format&fit=crop&w=1200&q=80)
PicoCTF 2024 — buffer overflow 1 [Binary Exploitation]
Step-by-step walkthrough of my first successful buffer overflow exploit. From understanding the stack to crafting the payload that redirected code execution to win().
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![PicoCTF 2024 — miniRSA [Cryptography]](https://images.unsplash.com/photo-1516116216624-53e697fedbea?ixlib=rb-4.0.3&auto=format&fit=crop&w=1200&q=80)
CTF WriteupmediumPicoCTF 2024 — miniRSA [Cryptography]
RSA with e=3 and a small message means no modular reduction — the cube root of the ciphertext is the plaintext. Here's how I spotted it and solved it in 10 lines of Python.
CTF WriteupmediumCTF Forensics: Menyembunyikan Data di Dalam Gambar
Steganography challenge — file PNG yang terlihat biasa ternyata menyimpan ZIP tersembunyi. Walkthrough dari analisis awal sampai ekstraksi flag.
Cyber SecurityOWASP Top 10 dari Perspektif Mahasiswa — Mana yang Benar-Benar Penting
Bukan ringkasan OWASP lagi. Ini catatan tentang mana yang paling sering muncul di CTF dan real-world bug bounty — dan mana yang sering diabaikan.