Binance Smart Chain
Private key leak, hot wallet
The staking contract of Pirate X @PXPNFTsGame has been attacked. BlockSec suspects it's due to the private key leakage (since the attacker leveraged a valid signed message to launch the attack). Specifically, the staking contract of Pirate X Pirate (0x6912B19401913F1bd5020b3f59EE986c5792DA54) was attacked by an attacker, resulting in the loss of the PXP token.
When user deposit their PXP token into this contract, their token will be transferred into an EOA account (0x3b74a9cb5f1399b4a5a02559e67da37d450067b7). The contract will call `Transferfrom` to transfer these funds back when user withdraw their tokens.
When users withdraw their funds, they will submit a signature signed by a singer controlled by the project. The attacker provided a valid sign of the external signer (0x7435e0e4c4d10988e8821dc4853d1db2eceb176d) and withdraw 9,681,000 PXP tokens.
The attacker dumped these tokens into the market, got a profit of about 212 BNB.
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