According to the last quarterly report, total "cash and cash equivalents" are $996,968, or just a touch under a million bucks. And that was a few months ago. This is a public company, which is required by law to file financial documents and such. Did you really think people wouldn't be able to get a decent idea of a company's financial situation?
Any meaningful share buyback would be for at least a half a billion shares, which would cost about $100 million at the current price of 20 cents. Again, ENZC couldn't even begin to think of buying back shares. They don't have the cash.