Snowflake Floki Hack
Incident Overview
The Snowflake Floki smart contract contained a transfer tax component that allowed the project deployer to ramp up the transfer fee of each transaction up to 100%, netting the deployer approx. $ 70k in ill-gotten funds.
The Snowflake Floki project was practically an imitation of the meme coin Floki Inu but promised to develop a metaverse casino. The $SFF token would have played the role of the in-game currency used for bets in Poker, Blackjack and Roulette. In order to make the $SFF token tradable, the contract deployer added initial liquidity in the below transaction:
https://bscscan.com/tx/0x371a142d…02fd57
A closer look at the $SFF smart contract should have alerted investors since the transfer taxes were adjustable by the contract deployer. This empowered the contract deployer to set fees up to 100% for each transaction, sending the tokens to his address:
https://bscscan.com/address/0x78cd0ea1…b67570#code#L1092
The deployer took advantage of the changeable transfer fee set it to 95% for selling SFF token:
https://bscscan.com/tx/0xe8e6680e…f678e5
In order to squeeze as much as possible out of the project, the deployer also removed liquidity several times :
https://bscscan.com/tx/0x18168c04…f73957
https://bscscan.com/tx/0xd9018a15…1cee15
https://bscscan.com/tx/0xd3ddc09b…126e04
https://bscscan.com/tx/0x3cbb6a94…06144a
https://bscscan.com/tx/0x555b7329…46f65b
The website and social media have been taken down.
Incident Report
Protocol Information
What the Attacker Needed to Succeed
Understanding the prerequisites for this type of attack helps auditors identify protocols that are most at risk and helps developers build better defenses.
What Auditors Should Check
If you're auditing a protocol with similar architecture to Snowflake Floki, these are the critical security checks that could have prevented this incident (December 2021).
- Verify all logic paths related to Honeypot are guarded by proper access controls and input validation
- Review privileged functions (owner, admin, governance) for potential abuse vectors - centralization risks should be documented and bounded with timelocks or multi-sigs
Master these auditing techniques with hands-on labs and real exploit scenarios in the Smart Contract Hacking course.
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