Sh*t!! We've lost the source code of our contract! All we know is that the contract address is:
Blockchain provider: http://elprofessor.challenges.bsidestlv.com:7545/
Do you think you can retrieve it?
Let's connect to the provider:
Using IDA-EVM (An IDA Processor Module for the Ethereum Virtual Machine (EVM)) we can disassemble this code.
After disassembly we see this chunk:
Therefore the flag is