FTX Hack

FTX was exploited due to gas limit vulnerability which caused mint of $XEN tokens at zero cost.

FTX is a centralized crypto exchange. FTX provides an opportunity for performing fee-free withdrawals. The hacker deployed a smart contract with unverified source code to exploit the vulnerability and was able to mint $XEN tokens with zero cost 17,000 times.

FTX lost roughly 81 $ETH due to gas stealing, and 61 $ETH worth of $XEN tokens were minted and swapped through UniSwap. The price of the $XEN token dropped by 33% after an incident.

Attacker address:

https://etherscan.io/address/0x6b01f9f4…b9b831

Malicious contracts:

https://etherscan.io/address/0x6438162e…324a3d

https://etherscan.io/address/0x56af41c4…3dcf45

Malicious transaction:

https://etherscan.io/tx/0xfb1a7b35…e3107d