ConsenSys Diligence Ethereum Hacking Challenge

Nathan
Nathan
Feb 26 · 1 min read
ConsenSys “not giving away ether” Diligence is giving away ether! Kind of.

is deploying a series of vulnerable smart contracts to put your hacking skills to the test. The first CTF challenge is dubbed Ethereum Sandbox, and is at . Exploit the contract and extract the 0.05 ether. There’s also a 200 DAI up for grabs. The rules for winning the bounty:

  • If you’re first to extract the ETH and post a write-up on how you did it, you win the bounty (you’ll need to prove ownership of the attacker’s address)
  • If you’re not first to extract the ETH but solved the challenge, you can still post a write-up. In case the original thief does not claim the bounty, we’ll pick the best write-up as the winner.

To exploit the contract, you’ll need reverse engineering skills, deep Ethereum knowledge, and a healthy dose of critical thinking. If you have any questions, head to the . Good luck and have fun!

UPDATE

Congratulations to samczsun for solving this challenge! Take a look at his .

The source code is now available .

ConsenSys Diligence

ConsenSys Diligence has the mission of solving Ethereum smart contract security. Contact us for an audit at diligence@consensys.net.

Nathan

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Nathan

ConsenSys Diligence

ConsenSys Diligence has the mission of solving Ethereum smart contract security. Contact us for an audit at diligence@consensys.net.