Reverse engineers .NET malware samples using the dnSpy decompiler and debugger to read C#/VB.NET source, deobfuscate code protected by tools like ConfuserEx or SmartAssembly, and extract hardcoded C2 configurations, keys, and credentials. Use when a sample is identified as a .NET assembly (e.g.
Install
npx skills add mukul975/Anthropic-Cybersecurity-Skills --skill reverse-engineering-dotnet-malware-with-dnspynpx skills add mukul975/Anthropic-Cybersecurity-Skills --skill reverse-engineering-dotnet-malware-with-dnspy -a claude-code -gnpx skills add mukul975/Anthropic-Cybersecurity-Skills --skill reverse-engineering-dotnet-malware-with-dnspy -a codex -ggemini skills install https://github.com/mukul975/Anthropic-Cybersecurity-Skills.git --path skills/reverse-engineering-dotnet-malware-with-dnspygh skill install mukul975/Anthropic-Cybersecurity-Skills reverse-engineering-dotnet-malware-with-dnspygit clone --depth 1 https://github.com/mukul975/Anthropic-Cybersecurity-Skills /tmp/mukul975__Anthropic-Cybersecurity-Skills
mkdir -p ~/.claude/skills ~/.agents/skills
cp -R /tmp/mukul975__Anthropic-Cybersecurity-Skills/skills/reverse-engineering-dotnet-malware-with-dnspy ~/.claude/skills/reverse-engineering-dotnet-malware-with-dnspy # Claude Code
cp -R /tmp/mukul975__Anthropic-Cybersecurity-Skills/skills/reverse-engineering-dotnet-malware-with-dnspy ~/.agents/skills/reverse-engineering-dotnet-malware-with-dnspy # Codex, Cursor, Gemini CLI, Copilot, OpenCode