Ethereum Sensible Deal Code Overview #1 – Serious Globe CTF 2018



I thought I understood Ethereum Wise Deal safety but this problem punched me in the experience. This was mad. In the initial episode I introduce the problem and converse about various tips I experienced. Aspect 2: Challenge Documents + Option: Remix: EVM Opcodes: Ethereum Plugin for Binary Ninja: -=[ 🔴 Stuff I use ]=- → Microphone:* → Graphics Pill:* → Digital camera#1 for Streaming:* → Lens for Streaming:* → Join Camera#1 to Computer:* → Keyboard:* → Outdated Microphone:* US Retail store Front:* – =[ ❤️ Support ]=- → for each video: → for each thirty day period: -=[ 🐕 Social ]= – → Twitter: → Web site: → Subreddit: → Facebook: – =[ 📄 P.S. ]=- All links with “*” are affiliate hyperlinks. LiveOverflow / Stability Flag GmbH is part of the Amazon Affiliate Partner System. #CTF #SmartContract .

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29 thoughts on “Ethereum Sensible Deal Code Overview #1 – Serious Globe CTF 2018”

  1. i see a lot of comments of people not understanding a single thing in a video. I'm usually like that with your other videos but this one, I know what you're talking about. can't wait for part 2

    Reply
  2. Is there any more resources on this ctf challenge? Like the dump of the transactions from logger.js to run on a private node? I'd like to take a swing at this before the rest of your videos come out.
    nvm realised deploy.js does exactly this

    Reply
  3. TL;DR Address 0xcf… is the chain's "miner".

    I think this chain uses Clique PoA. Therefore 0xcf… is most likely the only sealer, considering it's the coinbase (the miner reward recipient).

    By the way, the "HomesteadBlock" and others in the genesis JSON refer to Ethereum hard forks. The current one the main network is in is called Metropolis Byzantium, having alot of features not present in the original chain. Mainnet uses chainid 1 (same for ETH Classic), testnets use other small integers, custom "devnet" chains use other ones.

    EDIT: I am likely wrong. It seems that a sealEngine key needs to be in the genesis file. However, that doesn't change the fact that 0xcf is the miner. The devnet uses Ethash, rather than Proof of Authority.

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  4. Haha yeah, web3js is an absolute amazing piece of code. This is why I'm in the process of creating my JS library that uses WebAssembly for its cryptographic functions and I'm doing my best to use a little dependencies as possible 🙂 I'm happy to provide the links to my WIP github repos if anyone's interested.

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