Over the years I have written quite a few CTF challenges for various competitions. This page attempts to collate them (entries marked with \* are my favourites): - Yet Another CTF (University of Warwick) - 2022: - Blockchain: - [Blockchain 1 - Warmup 1](https://github.com/wmgcyber/yactf-challenges/tree/master/Blockchain/blockchain1) - [Blockchain 2 - Warmup 2](https://github.com/wmgcyber/yactf-challenges/tree/master/Blockchain/blockchain2) - [Blockchain 3 - Selfish](https://github.com/wmgcyber/yactf-challenges/tree/master/Blockchain/blockchain3) - [Blockchain 4 - Impostor](https://github.com/wmgcyber/yactf-challenges/tree/master/Blockchain/blockchain4) - [Blockchain 5 - I Am Not a Contract](https://github.com/wmgcyber/yactf-challenges/tree/master/Blockchain/blockchain5) - [Blockchain 6 - Break the Bank](https://github.com/wmgcyber/yactf-challenges/tree/master/Blockchain/blockchain6) - Intake CTF (University of Warwick) - 2021: - Crypto: - [Electronic Code Book](https://github.com/wmgcyber/intakectf-2021-public/tree/master/Crypto/electronic_code_book) - [Lottery](https://github.com/wmgcyber/intakectf-2021-public/tree/master/Crypto/lottery) \* - [Zip Crypto](https://github.com/wmgcyber/intakectf-2021-public/tree/master/Crypto/zip_crypto) \* - Misc: - [Timing is Everything](https://github.com/wmgcyber/intakectf-2021-public/blob/master/Miscellaneous/timing_is_everything/challenge.json) - Pwn: - [Buffer Overflow 1](https://github.com/wmgcyber/intakectf-2021-public/tree/master/Pwn/bof1) - [Buffer Overflow 2](https://github.com/wmgcyber/intakectf-2021-public/tree/master/Pwn/bof2) - [Buffer Overflow 3](https://github.com/wmgcyber/intakectf-2021-public/tree/master/Pwn/bof3) - [Buffer Overflow 4](https://github.com/wmgcyber/intakectf-2021-public/tree/master/Pwn/bof4) - [Buffer Overflow 5](https://github.com/wmgcyber/intakectf-2021-public/tree/master/Pwn/bof5) - [Buffer Overflow 6](https://github.com/wmgcyber/intakectf-2021-public/tree/master/Pwn/bof6) - Rev: - [Not My Fault](https://github.com/wmgcyber/intakectf-2021-public/tree/master/Reversing/not_my_fault) \*\* - Cyber Discovery Community Competition - 2021: - Blockchain: - [IIRC](https://github.com/Oshawk/iirc) - Cyber Discovery Content Creators Club Competition - 2020: - Rev: - [Fork and Knife](https://github.com/Oshawk/ccc_fak) \*\*