I Backdoored Cursor AI
AI Summary
Summary of Video ‘Loki C2 for Backdooring Electron Applications’
- Introduction to Electron and Loki C2
- Electron-based applications allow Node.js to run JavaScript.
- Examples include Discord, Slack, and Microsoft Teams.
- Loki C2: A Node.js command and control framework for backdooring Electron applications.
- Loki’s Functionality
- Targets Electron apps to bypass application controls.
- Allows arbitrary code execution via JavaScript files using Node.js child process.
- Loki replaces application JavaScript files with its own during installation.
- Documentation available on GitHub at github.com/bokku7/lokkey.
- Demo Overview
- Set up includes a victim machine (Windows 11) and an attacker environment (Kali Linux).
- Installation of vulnerable Electron application (Cursor) and setup of Loki C2.
- Vulnerability Check
- Ensures the target Electron application lacks security checks for JavaScript files.
- Uses Process Monitor (procmon) to verify the application behavior during startup.
- Backdooring Process
- Creates an Azure storage account and retrieves a SAS token for command and control operations.
- Demonstrates how to obfuscate the Loki payload and configure it to work with Azure.
- Execution
- The Loki client facilitates communication between the attacker and the compromised application.
- Demonstration includes running arbitrary commands on the victim machine without user awareness.
- Describes methods to retain normal application functionality while executing Loki commands.
- Persistent Backdoors
- Techniques discussed to maintain control without duplicating the entire application.
- Includes modifying package.json to manage application calls without size inflation.
- This method allows the original app to keep running while the backdoor remains active.
- Conclusion
- The methods presented provide significant insights into securing Electron applications.
- Encourages responsible use of the techniques shown and addresses detection methods for blue teams.