browser-exploitation SKILL.md skillA
browser-exploitation from hypnguyen1209/offensive-claude is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add hypnguyen1209/offensive-claude/browser-exploitation@git:20260629.9f4a1a5Pins git:20260629.9f4a1a5 in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- hypnguyen1209/offensive-claude
- Path
skills/browser-exploitation/SKILL.md- Versions recorded
- 2
- Latest version
- git:20260629.9f4a1a5, committed Jun 29, 2026
- First version recorded
- Jun 29, 2026
- Size
- 9,844 bytes
- Repository stars
- 405
- License
- MIT
Use when building a client-side browser exploit — V8/JSC JIT type confusion to renderer R/W, V8 heap-sandbox escape, renderer-to-browser sandbox escape (Mojo IPC, GPU/Dawn/ANGLE), Electron/webview IPC abuse, 1-click RCE chains.
Collected from public GitHub. Every version is saved exactly as it was and never changes. Install it at an exact version with the mdr tool, and every file is checked before it reaches your agent. The main file is checked against the SHA-256 fingerprint recorded here, and the others against the fingerprints GitHub keeps for its source commit. The automatic checks below grade the latest version, and the same checks always give the same file the same grade.
What the file says
# Browser & Client-Side Exploitation Turn a single client-side bug into full host compromise. The modern browser is a chain target: a JS-engine bug yields an in-renderer arbitrary read/write, the V8 heap sandbox must be escaped to get a native R/W, then a second logic/memory bug in a privileged process (browser broker, GPU) escapes the OS sandbox. Electron and embedded webviews collapse several of these steps. Every cluster pairs the offensive primitive with renderer-crash/IPC telemetry, Sigma/EDR detection, and cleanup OPSEC. ## When to Activate - A V8/JavaScriptCore bug (type confusion, OOB, UAF, JIT mis-speculation) must become `addrof`/`fakeobj` and an in-renderer arbitrary R/W. - An in-renderer R/W exists but is trapped inside the **V8 heap sandbox** (pointer compression) and needs a trusted-pointer / Wasm-object escape to native memory. - A renderer is fully compromised and you need to escape the **OS sandbox** via Mojo IPC handle/logic bugs or the GPU process (Dawn/WebGPU, ANGLE). - Auditing or exploiting an **Electron / CEF / WebView2** app: `contextIsolation`/`nodeIntegration`/`sandbox` misconfig, preload-bridge & IPC abuse, ASAR/fuse/snapshot tampering. …
Read the whole file at its exact version.
How to install
mdr add hypnguyen1209/offensive-claude/browser-exploitation@sha256:11ab5553711f1fecThe line at the top of this page pins the label git:20260629.9f4a1a5, which is what most people want. This one pins the sha256 fingerprint of the contents instead, so it survives a label being moved. Either way the exact version is written to mdr.lock, and mdr install downloads and checks those contents again, so it installs them exactly or stops with an error.
[](https://markdownregistry.com/a/art_x6inlqpoj7rcc6kf)
3 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 2 versions of this file, all committed on Jun 29, 2026.
| version | committed | commit | size | audit | |
|---|---|---|---|---|---|
| git:20260629.9f4a1a5 latest | 2026-06-29 | 9f4a1a5 | 9,844 B | A | view · diff |
| git:20260629.95337a2 | 2026-06-29 | 95337a2 | 9,881 B | A | view |
Audit of the latest version
- pass: Frontmatter block present
- pass: Frontmatter declares a name
- pass: Frontmatter declares a description
- pass: Size between 200 bytes and 200 KB (9844 bytes)
- pass: No zero-width or bidi control characters
- pass: No instruction hidden inside an HTML comment
- pass: No link to an exfiltration or paste host
- pass: No credential-shaped string
- pass: No instruction to send local credentials anywhere
- pass: No text hidden with inline styles
- pass: No prompt-injection phrasing
- pass: No curl or wget piped into a shell
- pass: No recursive delete of root, home or parent
- pass: No instruction to read or print local credentials
- pass: No base64 blob over 200 characters
- pass: No link to a raw IP address
- pass: No script tag
Source
hypnguyen1209/offensive-claude · 405 stars · license MIT · pushed 2026-10-22 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_x6inlqpoj7rcc6kf GET https://markdownregistry.com/api/v1/resolve?ref=hypnguyen1209/offensive-claude/browser-exploitation GET https://markdownregistry.com/api/v1/blob/11ab5553711f1fec224647d36f4368f9d335c77c5f27453dcfacadd2f16f3ae1
Your AI assistant does the legwork. You hear about the deals worth your word. Hand yours the standing instructions at modelranch.com and it joins the network that reads files like this one.
Guides: the SKILL.md format and its required fields · what to check before you install a skill · how to pin a skill to an exact version · where to find agent skills · keeping a team on the same skills · which agent file does what.