Yvette Johnson on Thu, 17 Aug 2017 02:16:45 +0200 (CEST)

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Re: <nettime> Underhanded Solidity Coding Contest

Near the Freer (DC)

Re-opening to visitors October 14-15

Yvette, '91

Sent from my iPad

> On Jul 4, 2017, at 6:13 AM, Felix Stalder <felix@openflows.com> wrote:
> ./ Underhanded Solidity Coding Contest
> These are not the backdoors you are looking for.
> http://u.solidity.cc/
> 1st Underhanded Solidity Coding Contest
> The Underhanded Solidity Coding Contest is a contest to write harmless
> looking Solidity code that conceals a hidden purpose. A good USCC entry
> looks like a clearly and straightforwardly written smart contract, but
> contains well disguised vulnerabilities that ensure its actual operation
> differs significantly from what the reader would expect. The USCC is
> inspired by the similar Underhanded C Coding Contest.
> Theme
> The theme for the first contest is “ICOs”.
> You are the lead developer of a groundbreaking new product, Merdetoken
> (MDT). Investor demand has been heavy, and soon you plan to announce an
> initial distribution of coins to the eager public.
> Unfortunately, investors are getting more demanding, asking projects for
> assurances such as payout contracts that release funds over time and
> require the approval of investors, and smaller caps with better pricing
> mechanisms. All of this significantly impacts your master plan to take
> in a hundred million dollars in token sales and then retire to a nice
> island, saddling your intern with the task of actually writing something
> - eventually.
> But you will not be deterred. Being well versed in solidity and
> sneakiness both, you’re confident you can come up with a tokensale
> contract that will pass the most careful audit, but still allow you to
> quickly retire to your tropical paradise with your ill-gotten gains.
> Brief
> Entrants must write a contract that in some way relates to ICOs - such
> as an ERC20 token contract, a contract for selling tokens, or one that
> conditionally pays funds out to project creators - with some critical
> vulnerability that can be exploited to enrich the project creators.
> Examples might include:
> - A crowdsale contract that allows certain participants to get more
> tokens than they ought to.
> - A disbursement contract that lets the project creators withdraw all
> the funds at once.
> - A token contract that allows stealthy creation of additional tokens.
> Rules and Scoring
> Submissions that are shorter and cleaner will be scored higher than
> those that are lengthy and complicated. It’s easy to hide a
> vulnerability in complex and poorly written code; far harder to hide it
> in clean and simple code.
> Bugs are worth more points if, once discovered, they can be plausibly
> dismissed as coder error.
> An error that arises from users misinterpreting code (such as confusing
> scoping, misleading variable names, etc) is just as valuable as one that
> exploits the language or the EVM itself. The goal is simply to pass
> inspection by a human.
> Remember to consider plausibility. Code that drops down to inline
> assembly without any clear reason why will look immediately suspicious,
> no matter how cleverly written the assembly-level flaw is.
> Submission guidelines and deadline
> Email submissions to underhanded-submissions@solidity.cc. Entries should
> consist of a ZIP file containing a README describing your submission and
> how it works (spoilers included), and one or more Solidity files.
> The entirety of your entry must be submitted under the Creative Commons
> Attribution-ShareAlike 3.0 Unported (CC BY-SA 3.0) license. You must not
> submit anything that cannot be submitted under that license.
> Judges will compile your code using a recent version of Solidity. You
> may specify a particular version in your source files - but you should
> expect this to raise some major red flags with the judges.
> Each person may enter only once. If you wish to make a team submission,
> nominate a single person to submit on your team’s behalf.
> Please do not include identifying information in the ZIP file; entries
> will be sent to judges anonymously.
> July 1, 2017: Submissions open
> July 31, 2017: Submissions close
> September 1, 2017 or before: Winners announced
> Frequently Asked Questions
> Who can participate
> Anyone over the age of 13 except the judges and the organiser, Nick
> Johnson, and those who live in areas where contests of this kind are
> prohibited.
> Why are you doing this?
> Writing secure code is as much about behaving in a way users expect as
> it is about the technical aspects of software engineering, and ‘hacking’
> is as much about exploiting differences between expected behaviour and
> real behaviour as it is about finding an exploiting bugs. We want to
> highlight this discrepancy, and make people think hard about how things
> actually work. In the process, we hope people will learn more about
> writing secure software, and establish new guidelines and best practices
> to help reduce the risk of ‘underhanded’ coding adversely affecting a
> real project.
> Are you encouraging people to be evil or underhanded?
> No - quite the reverse. Our goal is to highlight anti-patterns in smart
> contract development, so people are more aware of and can avoid the
> pitfalls when writing and reviewing smart contract code.
> Judges
> Judging this first contest are:
> - Christian Reitwiessner, Solidity lead developer
> - Matthew Di Ferrante, Security engineer & code auditor
> - Raine Revere, Prism lead architect
> - Reto Trinkler, Melonport CTO
> - Yudi Levi, Localcoin CTO
> Judges are presented with anonymised submissions, and provide scores and
> commentary. The scores across all judges will be aggregated to determine
> the final score of each entry.
> Prizes
> The Ethereum Foundation has contributed a Devcon3 pass and an
> opportunity to present your winning entry, which the contest is offering
> as a first prize.
> Second place prize is 10 MLN tokens from Melonport.
> Contest void where prohibited by law. If your jurisdiction requires you
> to pay taxes on prizes or imposes other restrictions, it’s up to you to
> adhere to those. Every attendee to Devcon3 must comply with and be
> subject to the terms and conditions and code of conduct of Devcon3 and
> this includes those who attend through the grant of this prize.
> The judges may, at their discretion, nominate any number of additional
> ‘honorable mentions’ for examination and approbation on the website.
> Anyone wishing to offer additional prizes, or with questions about the
> contest, should email underhanded@solidity.cc.
> -- 
> ||||||||||||||||||||||||||||||||| http://felix.openflows.com
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