lockbox2-rocks
ethereumjs-monorepo
lockbox2-rocks | ethereumjs-monorepo | |
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1 | 14 | |
0 | 2,498 | |
- | 1.8% | |
1.8 | 9.6 | |
over 1 year ago | 4 days ago | |
Solidity | TypeScript | |
- | Mozilla Public License 2.0 |
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lockbox2-rocks
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Unlocking the Lockbox2 | ParadigmCTF’22
The Lockbox2 challenge is available here. In this post, we'll understand the challenge and solve it (based on how I approached it during the CTF). I've posted links wherever necessary. As a heads up, this is a quite long post, it's intended for beginners/intermediates to be able to follow. For experts, feel free to skim through the post or directly skip to the final solution here.
ethereumjs-monorepo
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How ethereum has been made from scratch ?
EthereumJS VM is an Ethereum client written in javascript, so if you can write an Ethereum client in JavaScript it seems pretty reasonable that you could write an alternative with Javascript. The thing is, EthereumJS VM isn't actually fast enough to keep up with the mainnet blockchain, and it would be difficult to write a full featured blockchain with a turing complete scripting language that could process transactions on par with the volume of transactions Ethereum handles in JavaScript for performance reasons. Certainly you could write something lower volume in JavaScript.
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Unlocking the Lockbox2 | ParadigmCTF’22
If it is a precompile, then we have just a handful of choices.
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How to learn more about the EVM
For instance, when I first read the EVM source code I knew JS the best, thus I read the source code from the Ethereum JS GitHub repo: https://github.com/ethereumjs/ethereumjs-monorepo/tree/master/packages/evm
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Daily General Discussion - May 20, 2022
Daily Kiln: Beacon sync merged to master for ethereumjs. Still trying to solve The Mystery of the Missing Receipts. Sometimes a CL client throws an error about non-consecutive deposit indexes, and it doesn't resolve without a fresh sync. There was a regression in lighthouse that I was helping troubleshoot for a couple of new testers in #testingthemerge. There's an open PR that fixes it.
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Daily General Discussion - May 16, 2022
Daily Kiln: erigon is fixed, so I'm back to lighthouse-ethereumjs being the only client pair with issues. This PR might fix that, but I'm waiting until optimistic sync gets merged to the master branch before switching back to it.
- Understanding the Ethereum Virtual Machine (EVM)
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Daily General Discussion - May 12, 2022
Daily Kiln: sproul (from lighthouse) was able to use some information I provided to troubleshoot issues with lighthouse-ethereumjs. ethereumjs is missing some fields required by the spec in the response to eth_getBlockByHash. In addition, he created an issue for lighthouse so it won't mark the EL as offline if a non-essential API call fails.
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Daily General Discussion - March 29, 2022
Daily Kiln: lighthouse and nimbus both pushed updates which fixed syncing with ethereumjs by increasing the timeout for engine_new_payload (as well as engine_forkchoice_updated in just lighthouse). ethereumjs has a pending pull request which should improve speed by only executing the block in engine_new_payload. There's a strong possibility that I'll have 25/25 client pairs synced and attesting by tomorrow.
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Daily General Discussion - March 12, 2022
Daily Kiln: Today's focus was ethereumjs. I set up all five client pairs. I addressed a number of issues that I encountered in their Discord with ryanio - mostly incorrectly handled RPC calls - and one of those issues resulted in a pull request to fix compatibility with teku.
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Might be a dumb question: Are there any ETH L2s that have a java virtual machine for transactions?
JavasScript (from ethereumjs)
What are some alternatives?
paradigm-ctf-2021 - Official repository for Paradigm CTF 2021
ethers.js - Complete Ethereum library and wallet implementation in JavaScript.
ethers-repl - 🔪 Ethers.js in Node.js REPL
web3-react - A simple, maximally extensible, dependency minimized framework for building modern Ethereum dApps
etk - evm toolkit
evmone - Fast Ethereum Virtual Machine implementation
evm-run - 🏃 Run EVM code from console or file, on local or mainnet fork.
ethereumjs-vm - Monorepo for the Ethereum VM TypeScript Implementation [Moved to: https://github.com/ethereumjs/ethereumjs-monorepo]
clientdiversity-org - This is the source code for https://clientdiversity.org, a resource site to assist client diversity efforts.
nodejs-api-starter - 💥 Yarn v2 based monorepo template (seed project) pre-configured with GraphQL API, PostgreSQL, React, Relay, and Material UI. [Moved to: https://github.com/kriasoft/relay-starter-kit]
foundry - Foundry is a blazing fast, portable and modular toolkit for Ethereum application development written in Rust.
besu - An enterprise-grade Java-based, Apache 2.0 licensed Ethereum client https://wiki.hyperledger.org/display/besu