How did this person mint tokens out of nowhere?

This contract creator minted a bunch of tokens out of nowhere. I am curious to understand how it works. I didn't see a mint function anywhere. The token is called INERM. I linked the creator's address and contract code.

Thank you!

The contract does not do any kind of minting or balance management. on line 63 you can find the address of the contract that does that: address private accounting. You can find this address by either reading the 6th storage slot of the contract (web3.eth.getStorageAt(addr, slot)) or look for the last transaction calling setAccountingAddress (this transaction).

The code for this contract is not available. you can try a decompiler and look for something fishy