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Belt Finance attack event analysis

This article is about 543 words, reading the full article takes about 1 minutes
Recently, there have been frequent attacks on the BSC chain, and contract security needs to be paid more and more attention.
AI Summary
Recently, there have been frequent attacks on the BSC chain, and contract security needs to be paid more and more attention.

foreword

According to the official tweet, on May 30, the Belt Finance project on the BSC chain was attacked by a flash loan. Knowing that Chuangyu Blockchain Security Lab tracked and analyzed the incident for the first time.

analyze

analyze

Attack contract:
0x4eB362934D56f2669a712Cb92d316cd465921B5DAttack contract:

attack processAttack tx:attack process1. The attacker first lends 8 flash loans from PancakeSwap, totaling 385M BUSD2. Among them, 10M BUSD is transferred to the bEllipsisBUSD strategy, and 187M BUSD is transferred to the bVenusBUSD strategy3. Exchange 190M BUSD to 169M USDT in Ellipsis4. Withdraw BUSD in the bVenusBUSD strategy5. Convert 169M USDT to 189M BUSD in Ellipsis8. Return the flash loan, and convert the assets obtained in the attack into ETH in batches through the Nerve (Anyswap) cross-chain bridge

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secondary title

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Safety
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