Posts tagged ethereum
THCon 2023 “supplychain” writeup
- 24 April 2023
This is a writeup from the “supplychain” challenge of the CTF for THCon 2023, made by Dridri.
Critical analysis of Flashbots
- 13 January 2021
This article is about the Flashbots project (see that post on ethresear.ch for background).
The bZx attacks explained
- 18 February 2020
This article will examine in details what happened during the two transactions that exploited vulnerabilities to open under-collateralized positions in bZx, causing a loss of equity worth more than a million dollar in total.
Analyzing suspicious smart contract vacuuming
- 18 February 2019
This is the counterpart of Blockchain Autopsies - Analyzing Ethereum Smart Contract Deaths, looking at suspicious patterns in the history of Ethereum, where contracts would not be killed but simply emptied by attackers.
How to steal Ethers: scanning for vulnerable contracts
- 05 December 2018
Four years ago, I wrote an article “How to steal Bitcoins” that was about finding address corresponding to weak brainwallets, and some forensic evidence that it was exploited automatically, for profit.
Pakala: yet another EVM symbolic execution tool
- 04 December 2018
Pakala is a tool for symbolic execution of EVM bytecode (like Manticore or Mythril).
Syncing a Parity Archive Node: How-To
- 02 December 2018
For my experiments, I set on having an Ethereum archive node (with the full history of all the states), with Parity.