Leaderboard
892All-time rank
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xWin Finance

Jun 25, 2021

$270K
Lost
$270K
Recovered
$0
Net loss
$270K
Unrecovered0% recovered

A flashloan attacker exploited invalid slippage control logic in xWin's reward distribution system, which did not properly validate transaction slippage limits. The attacker obtained a flashloan of 76,000 BNB, manipulated the swap price, and extracted 303,998 XWIN tokens by exploiting the broken slippage validation in the _swapBNBToTokens function.

How the exploit worked

View reproducible PoC

subscription-incentive-mechanism.

Lost: ~$300k

Source: DeFiHackLabs (SunWeb3Sec)

Target
DeFi
Classification
Input Validation
Technique
Missing Input Validation
Attribution
Unknown
Chains
BSC

Event timeline

  1. Jun 25, 2021
    Exploit executed — $270K drained via missing input validation
  2. Attributed to Unknown
  3. Recovery status Unrecovered 0%

Data credits

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