POPA ReconHongCoin was a 2016 ICO project. It didn’t reach its
HongCoin was a 2016 ICO project. It didn’t reach its funding goal, but the contract held all the investors' ETH and was supposed to auto-refund them. A bug in the refund function quietly broke that, and the funds got stuck. The way out was an admin function with an integer overflow vulnerability ; calling it with a specific input resets a holder's balance and unblocks the refund check. tested it end-to-end and shared the path with the team that successfully executed the 41 unlock transactions earlier this week. HongCoin: https://etherscan.io/address/0x9fa8fa61a10ff892e4ebceb7f4e…
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