Challenge: Identify and Prevent Proxy Contract Attacks
Educational Purpose Only - Attack Simulation
⚠️ Educational Purpose Warning
This demonstration is for educational purposes only, showcasing potential vulnerabilities in proxy
contracts. Do not use these attack methods in real environments.
Real-World Case Study: Bybit Incident (February 2025)
On February 21, 2025, Bybit's Safe multisig wallet was compromised through a proxy contract attack. The
attacker executed transaction 0x46deef...7882, which led to unauthorized access to the wallet.
Attack Analysis:
The attacker exploited the proxy contract's upgrade mechanism
A malicious implementation contract was deployed to gain control
The attack resulted in potential access to the wallet's assets
Paste the transaction hash to decode the execution data
Review the actual function calls and parameters
Identify potential malicious patterns in proxy contract interactions
Attack Principle Explanation
Attackers modify the proxy contract's masterCopy through carefully crafted calls
The new masterCopy contains malicious code that can transfer assets from the proxy contract
Through the proxy contract's delegate call mechanism, attackers can execute malicious logic
Prevention Measures
Use UUPS or Transparent proxy patterns
Implement appropriate access control mechanisms
Carefully audit proxy contract logic and permission settings
Use audited proxy contract libraries
Step 1: Connect Wallet
Current Network: Not Connected
Wallet Status: Not Connected
Attack Tips
Before proceeding with the attack demonstration, please check the tips in the image
. Pay special attention to the first parameter of the execTransaction
function, as it contains crucial information for understanding the attack mechanism.
Step 2: Attack Process Demonstration - Multi-signature Authorization
