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html-smuggling-lure

92 / 100 · Low risk

Fine to try. Some of what it can do is expected: a coding skill usually runs build and test commands.

By BitterSecurity/Decepticon (GitHub) · coding · 6,581 stars · scanned at commit bdb1016

HTML smuggling payloads for initial access — embed base64-encoded binaries inside an HTML attachment that reconstructs and auto-downloads the file client-side via JavaScript Blob, bypassing email gateway and proxy file-type inspection.

Works with any agent that supports SKILL.md skills.

What this skill can do

Install

Paste this into your terminal. It downloads exactly the version we scanned, not whatever is newest.

if [ -e ~/.agents/skills/'html-smuggling-lure' ] || [ -L ~/.agents/skills/'html-smuggling-lure' ]; then echo 'A skill folder named html-smuggling-lure already exists — not replacing it' >&2; false; else d=$(mktemp -d) && git clone --quiet --filter=blob:none --no-checkout 'https://github.com/BitterSecurity/Decepticon' "$d" && git -C "$d" checkout --quiet 'bdb1016c93ed687f61ac57481da298c25a47c8f5' -- 'packages/decepticon/decepticon/skills/standard/phisher/html-smuggling-lure' && mkdir -p ~/.agents/skills && cp -R "$d"/'packages/decepticon/decepticon/skills/standard/phisher/html-smuggling-lure' ~/.agents/skills/'html-smuggling-lure' && rm -rf "$d"; fi

Codex reads ~/.agents/skills directly. For Claude Code, Cursor, Copilot, Gemini CLI, Antigravity or OpenCode, also link it. For Claude Code: ln -s ~/.agents/skills/'html-smuggling-lure' ~/.claude/skills/'html-smuggling-lure' (other agents: ~/.cursor/skills, ~/.copilot/skills, ~/.gemini/skills, ~/.gemini/config/skills, ~/.config/opencode/skills). Or install through the finder skill, which does both.

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