re-variant
Compares malware code versions to find patches, similarities, and origins.
Installation
Paste this into Claude Code, Cursor, or any agent that can run commands.
What this skill does
What it does:
- Compares two versions of binary files to find what changed between them
- Matches functions and code blocks from one file to another using special tools
- Identifies new, deleted, or modified functions when comparing versions
- Helps find security patches by showing what code was fixed
- Traces how malware families are related by comparing their code
When to use it:
- You have two versions of the same program and want to see what changed
- You found a security patch and need to understand what bug it fixed
- You want to know if two malware samples are from the same family
- You need to check if a security fix was applied to all versions of a program
- You are studying how code gets reused across different versions
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