Nick L. Franklin (@0xnicklfranklin) 's Twitter Profile
Nick L. Franklin

@0xnicklfranklin

I've studied and analyzed all blockchain hacking transactions for 2 years. Now I'm ready to struggle for the peace of blockchain ecosystem.

ID: 1753236946862891008

calendar_today02-02-2024 02:01:01

344 Tweet

1,1K Followers

91 Following

Nick L. Franklin (@0xnicklfranklin) 's Twitter Profile Photo
Nick L. Franklin
@0xnicklfranklin

2 months ago

app.blocksec.com/explorer/tx/et…. An unverified contract lost $4k. I think root cause is improper check of calldata in "uniswapV2Call" function. It needs to check first parameter-sender address, but it didn't. Hacker could call this callback function by calling "swap" function.

app.blocksec.com/explorer/tx/et…. An unverified contract lost $4k. I think root cause is improper check of calldata in "uniswapV2Call" function. It needs to check first parameter-sender address, but it didn't. Hacker could call this callback function by calling "swap" function.