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Solving SherlockCTF

Feb 25, 2022 · 28 min read · Remix Solidity Hardhat ·

SherlockCTF was a collaborative CTF organized by Sherlock and Secureum, for the top 32 participants in february's RACE event. Each participant submitted a CTF level, and for 7 days, the competition was opened. I managed to score 32 points.

Solving Ethernaut - Part 5 - Levels 21 to 25

Nov 15, 2021 · 21 min read · Remix Solidity ·

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Fifth (and last?) part of the solutions to Ethernaut. The challenges in this part are mostly vulnerabilities on more complex contracts, that mimic real exploits.

Solving Ethernaut - Part 4 - Levels 16 to 20

Nov 15, 2021 · 15 min read · Remix Solidity ·

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Fourth part of the solutions to Ethernaut. This time the challenges get harder and more interesting.

Solving Ethernaut - Part 3 - Levels 11 to 15

Nov 15, 2021 · 11 min read · Remix Solidity ·

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Third part of the solutions to Ethernaut. More fun levels, and a little bit harder than before.

Solving Ethernaut - Part 2 - Levels 6 to 10

Nov 15, 2021 · 11 min read · Remix Solidity ·

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Second part of the solutions to Ethernaut. Levels start to get progressively harder, and a lot more interesting to solve and learn.

Solving Ethernaut - Part 1 - Levels 0 to 5

Nov 15, 2021 · 11 min read · Remix Solidity ·

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Another Solidity and Ethereum security CTF game. This time we will be solving Ethernaut, the game hosted by OpenZeppelin.

Solving CaptureTheEther - Part 5 of 5 - Miscellaneous

Nov 10, 2021 · 6 min read · Solidity Python Remix ·

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This last category of challenges is a mix of various types of vulnerabilities that don't really fit into any of the other categories.

Solving CaptureTheEther - Part 4 of 5 - Accounts

Nov 10, 2021 · 11 min read · Solidity Remix ·

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These challenges are meant to teach about the fine details of EVM-compatible networks accounts, contract deployment and cryptographic key pairs.

Solving CaptureTheEther - Part 3 of 5 - Math

Nov 10, 2021 · 19 min read · Solidity Remix ·

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Third post for the CaptureTheEther CTF writeups. Now the focus is on mathematical functions.

Solving CaptureTheEther - Part 2 of 5 - Lotteries

Nov 10, 2021 · 12 min read · Solidity Python Remix ·

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This is the second post of a total of five, for the CaptureTheEther CTF writeups. This time, the focus will be on the Lotteries category of challenges. Most levels here will require the player to code and deploy new contracts to the network, and interact with them.