Individual skill
html-smuggling-lure
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.
packages/decepticon/decepticon/skills/standard/phisher/html-smuggling-lure/SKILL.md
Source commit df879550544d36b6b1e69062f05adae28537adf2
What was checked
- Matches the observed repository HEAD
- Yes
- Scanner rules are current
- No
- Repository scan complete
- No
- Skill scan complete
- No
- Observed behavior
- Not checked yet
- Last checked
- Nov 8, 2026
These are observations at the recorded commit, not a guarantee of safety. Review the source before running it.
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Repository context
- Repository stars (not skill ratings)
- 6,567
- Repository last updated
- Nov 7, 2026
- License
- Apache-2.0
Observed agent integration: No specific integration evidence. Standard SKILL.md installation does not imply verified compatibility.
- agent Repository topic
- ai Repository topic
- cybersecurity Repository topic
- hacking Repository topic
- langchain Repository topic
- langgraph Repository topic
- llm Repository topic
- generative-ai Repository topic
- pentesting Repository topic
- pentest Repository topic
- phishing Declared skill tag
- html-smuggling Declared skill tag
- initial-access Declared skill tag
- evasion Declared skill tag
- engineering Derived category
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# HTML Smuggling Lure
HTML smuggling abuses the browser's ability to construct files from
JavaScript — a base64-encoded payload is embedded directly in an HTML
email attachment or link. When opened, JavaScript decodes the blob,
creates an `<a>` element with a `blob:` URL, and triggers a download.
The payload never transits the wire as a detectable file type, so email
gateways and web proxies that inspect MIME types see only `text/html`.
Nobelium (SolarWinds), Qakbot, and IcedID campaigns have used this
technique extensively since 2021.
## Prerequisites
