ConsenSys Diligence Ethereum Hacking Challenge #2

ConsenSys Diligence is releasing a couple CTF challenges. The first one (“Ethereum Sandbox”) took advantage of changes introduced in the Constantinople upgrade. It was solved by samczsun.

The second challenge is called Rop EVM. Read some bytecode and write an exploit. It is at 0xEfa51BC7AaFE33e6f0E4E44d19Eab7595F4Cca87.

Exploit the contract and extract the 0.05 ether. There’s also a 100 DAI bounty up for grabs. The rules for winning the bounty are the same as last time:

If you have any questions, head to the MythX Discord. Good luck and have fun!


Congratulations to samczsun for solving this challenge as well! Take a look at his fantastic writeup. Or extract the creation bytecode and continue to solve without the promise of a prize!

Thinking about smart contract security? We can provide training, ongoing advice, and smart contract auditing. Contact us.

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