Building skills for securing smart contracts.
Reverse-engineering state storage, manipulating gas, hexadecimal math, zero code size contracts and more!
May 12, 202223 min read381
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#solidity
Articles tagged with #solidity
Ethernaut: accessing private data, denial of service, reentrancy attacks and dishonest contracts.
Let's get straight to it. The vulnerabilities exploited on this installment are not trivial and can be particularly malicious. Specially the reentrancy attack at #10. 8th Challenge: Vault - accessing private data We will need to unlock the following ...
May 8, 20227 min read70
Ethernaut: Phishing tx.origin, Arithmetic Overflow, delegateCall, and forcibly sending Ether.
Let's continue the Ethernaut with challenges 4 through 7. These are quite interesting and point out several of the basic vulnerabilities you should be aware of when writing smart contracts. :D 4th Challenge: Telephone - tx.origin phishing The goal is...
May 7, 20226 min read194
Ethernaut: Fallback, Fallout and winning a random game by predicting the future!
This is fun!
May 6, 20225 min read167