MorpheusAI

Summary

The project defines the solidity version as pragma solidity ^0.8.20; and wants to deploy the code on Arbitrum. This may not be possible because Arbitrum does not support the PUSH0 opcode, which was introduced in 0.8.20, and the opcode is used by Distribution.sol contract.

Vulnerability Details

Arbitrum does currently not support the PUSH0 opcode, which was introduced in 0.8.20. (This can be seen in the Arbitrum documentation).

The project uses this opcode which can be seen with the following steps:

1. Copy the bytecode of the Distribution.sol contract inside artifacts/contracts/Distribution.sol/Distribution.json

2. Past it into the Etherscan Bytecode to Opcode Disassembler.

3. Search for PUSH0 in the output with the command Strg + F.

Therefore the project may not be deployable on the desired chain.

Impact

The project may not be deployable.

Recommendations

Change the solidity version to 0.8.19.