CTF Writeups

Smart contract CTF solutions with technical writeups, organized by challenge platform.

Each writeup covers: the vulnerability pattern, attack vector, PoC, and mitigation.

Challenges

Ethernaut (OpenZeppelin)

#	Level	Vulnerability	Writeup
-	coming soon	-	-

Damn Vulnerable DeFi (v4)

#	Challenge	Vulnerability	Writeup
-	coming soon	-	-

Format

Each writeup lives in its own folder with:

• README.md — explanation of the vulnerability and solution
• exploit.sol or exploit.t.sol — Foundry PoC (when applicable)
• notes.md — observations about real-world occurrences of this pattern

Related

• hack-analyses — Historical DeFi exploits reproduced in Foundry
• HackerOne profile

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Renato Costa · GitHub · LinkedIn · X