ctf / blockchain / writeups

kudalir

A focused home for CTF practice, blockchain security, and technical writeups that turn small research trails into useful notes.

kudaliar.id/session

$ focus --currentctf: reversing, web, cryptoblockchain: smart contracts, protocol riskoutput: writeups, notes, reproducible steps

Focus

Practical security work, written clearly.

The site keeps the entry points simple while giving each part of the work a clear place to live.

Challenge practice, solve notes, and repeatable methods across web, crypto, reversing, and related categories.

Smart contract behavior, protocol assumptions, and security lessons from hands-on analysis.

Short, direct posts that explain the path from observation to exploit, fix, or takeaway.

Elsewhere

Primary links for code, writeups, portfolio material, and contact.