Found an implementation of a dapp that uses a solidity contract but what's only available is the contract ABI from their project and not the solidity file.
Just wanna ask if this is possible.
Just to clarify, you're asking if you can get the source code from the ABI? If so, the answer is no, you can't. The ABI only includes the information required to interact with a contract, i.e. the function names, parameters, return types, and event data.