Story / Security Assessment Completed Strengthening Blockchain-Based IP Management At FuzzingLabs we recently completed a comprehensive security assessment of Story, a decentralized network that aims to revolutionize intellectual property (IP) management. This audit was undertaken to ensure the security and resilience of its blockchain-based infrastructure, smart contracts, and consensus mechanisms. Below, we provide an overview…
Denial Of Service in DeFi Liquidity Pools The Initialization Vulnerability Decentralized Exchanges (DEXs) have become a cornerstone of the DeFi ecosystem, processing billions in daily trading volume. However, during our recent security research at FuzzingLabs we uncovered a subtle yet significant vulnerability pattern that affects multiple DEX implementations. This vulnerability allows malicious actors to effectively…
Grehack ctf WRITEUP Casting reverse challenge into cryptanalysis challenge In mid-November, I participated in the GreHack CTF with my team (Phreaks 2600), and the challenge I will present was one of the problems featured in the competition. Interestingly, only two other teams managed to solve it, this makes it a particularly intriguing challenge, categorized under…
Poseidon Sponge Bugs in ArkWorks Avoiding Cryptographic Failures in Hashing We found two subtle yet impactful bugs in the ArkWorks library’s implementation of the Poseidon Sponge. This discovery highlights the complexity and precision required in cryptographic implementations. In this article, we’ll first explain what Poseidon Sponge is, how it works, and then delve into the…
Uncovering a Subtle Bug in Ethereum Virtual Machine (EVM) The Case of Arithmetic Negating Zero Our team at FuzzingLabs has been auditing the Ethereum Virtual Machine (EVM) implementation by LambdaClass. Throughout the audit, we’ve identified several vulnerabilities, but in this post, we’ll focus on one particularly interesting issue involving the SDIV operation and its handling…
Top 4 Vulnerabilities in Cairo/Starknet Smart Contracts Detection and Remediation What is Cairo ? In 2021, StarkWare introduced Cairo, a programming language designed for creating provable programs using zero-knowledge proofs. It serves as the smart contract language for Starknet, a layer-2 blockchain built on top of Ethereum. This article explores some of the most common…
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