$ ctf42

#smart-contract CTF challenges

9 CTF challenges using smart-contract from 5 CTFs (2023–2026), 9 with writeups. Mostly Blockchain (44%) and Misc (33%).

Blockchain · 4 Misc · 3 Pwn · 2

Often combined with

#token-economy-logic-flaw 1 #erc20 1 #fee-on-transfer 1 #transfer-root-spoofing 1 #cross-chain-bridge 1 #private-storage-read 1 #merkle-proof 1 #flash-loan 1 #reentrancy 1 #arbitrary-storage-write 1 #storage-collision 1 #etherscan 1 #pcap 1 #irc 1 #storage-read 1

Challenges

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Challenge CTF Weight Category Has
infinite CrewCTF 2023 20.33 Blockchain files wu 3
Pigeon_Bank SEETF 2023 – Blockchain files wu 3
Murky_SEEPass SEETF 2023 – Blockchain files wu 3
Blockchain_Re_Remix SekaiCTF 2023 24.86 Misc files wu 3
Grains_of_Sand Paradigm 2023 25.00 Pwn files wu 3
Hopping_into_Place Paradigm 2023 25.00 Pwn files wu 3
PP_Farming_2 SekaiCTF 2026 79.25 Blockchain files wu 1
Mafia_at_the_end_2 PwnMe 2025 Quals 24.95 Misc files wu 1
Mafia_at_the_end_1 PwnMe 2025 Quals 24.95 Misc files wu 1