iv8-jsvmp-recovery

iv8-jsvmp-recovery is a skill for Claude Code, Codex from zhizhuodemao/ai-reverse-resources. It costs 195 tokens per session (1,826 once invoked), scanned A, original, no licence file.

A workflow for recovering the exact behavior of protected JavaScript running inside iv8, a controlled JavaScript runtime, including how it produces signatures, tokens, or encrypted data.

In plain words
What is it for?
It is for reversing JSVMP or virtual-machine JavaScript, tracing handlers and opcodes, recovering strings, and reproducing the input-to-output mapping in Python or JavaScript.
Why use it?
It helps replace guesswork with evidence from bytecode, control-flow analysis, and runtime traces while checking that an independent implementation behaves identically.

Skill for Claude CodeCodex

Written for Claude Code and Codex: shipped in a Claude Code plugin, but also agents/openai.yaml present.

Part of the js-reverse-plugin plugin — 3 skills shipped together

Good fit It is for reversing JSVMP or virtual-machine JavaScript, tracing handlers and opcodes, recovering strings, and reproducing the input-to-output mapping in Python or JavaScript.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/zhizhuodemao/ai-reverse-resources/iv8-jsvmp-recovery
Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

Any agent
npx skills add zhizhuodemao/ai-reverse-resources --skill iv8-jsvmp-recovery
Clone the repo
git clone --depth 1 https://github.com/zhizhuodemao/ai-reverse-resources

Made for: Claude Code, Codex.

Or install js-reverse-plugin, the plugin that ships this one along with the rest of its 3 skills.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

agentmods badge for iv8-jsvmp-recovery

README.md
[![agentmods](https://agentmods.dev/badge/skills/zhizhuodemao/ai-reverse-resources/iv8-jsvmp-recovery/github.svg)](https://agentmods.dev/skills/zhizhuodemao/ai-reverse-resources/iv8-jsvmp-recovery)
Your own site
<a href="https://agentmods.dev/skills/zhizhuodemao/ai-reverse-resources/iv8-jsvmp-recovery"><img src="https://agentmods.dev/badge/skills/zhizhuodemao/ai-reverse-resources/iv8-jsvmp-recovery/github.svg" alt="Measured on agentmods" height="20"></a>

Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

agentmods 80×15 button for iv8-jsvmp-recovery

Your own site · 80×15
<a href="https://agentmods.dev/skills/zhizhuodemao/ai-reverse-resources/iv8-jsvmp-recovery"><img src="https://agentmods.dev/badge/skills/zhizhuodemao/ai-reverse-resources/iv8-jsvmp-recovery.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 195 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,826 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.
Origin unknown No closer match found in the catalogue.
Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

ModelPer sessionOnce invoked
Fable 5.1 $0.00195 $0.01826
Opus 5 $0.00097 $0.00913
Sonnet 5 $0.00039 $0.00365
Haiku 4.5 $0.00019 $0.00183

Measured 12d ago against content hash 7158e374003c, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-12, from the pricing page.

Security

Grade A, and why

iv8-jsvmp-recovery scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 12d ago.

The scan reads SKILL.md. This mod also ships 1 executable file (scripts/verify-equivalence.py), listed below but not scanned — reading those needs a real analyzer, not pattern matching.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

plugins/js-reverse-plugin/skills/iv8-jsvmp-recovery/SKILL.md · 130 lines

The source is not reproduced here

No licence file

A repository with no LICENSE is all rights reserved by default, so the body is not copied here. The metadata, the measurements and the link are.

Read it on GitHub

Files

What ships with it

6 files beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

  1. 12d ago First seen · 130 lines · 195 tokens per session scan A 7158e374003c

Subscribe to this mod's changes

iv8-jsvmp-recovery is a skill published in the GitHub repository zhizhuodemao/ai-reverse-resources (8 stars, last pushed 29d ago), with no licence file. It adds 195 tokens to every session and 1,826 once invoked, about $0.0010 per session on Opus 5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-31.

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