deserialization SKILL.md skillA
deserialization from hellodqy/mastermind-bug-bounty is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add hellodqy/mastermind-bug-bounty/deserialization@git:20260914.819e838Pins git:20260914.819e838 in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- hellodqy/mastermind-bug-bounty
- Path
skills/deserialization/SKILL.md- Versions recorded
- 1
- Latest version
- git:20260914.819e838, committed Sep 14, 2026
- Size
- 1,345 bytes
- Repository stars
- 14
- License
- none declared
Test serialized objects, polymorphic payloads, message formats, and naming lookups when untrusted data may instantiate types or trigger dangerous behavior.
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
# Deserialization ## Goal 识别数据格式、运行库与可达 gadget，使用低风险证据判断不可信输入是否触发类型实例化、外部查找或代码路径。 ## Tools / Inputs - Content-Type、魔数、错误信息、依赖版本、类型字段、消息队列与 OOB 证据 - 资源索引：`references/INDEX.md`；候选资源：`deserialization-jndi-testing.md`、`cve-chains.md` ## Constraints 1. 先确认格式和解析库，再选择探针。 2. 优先无害类型差分、DNS/OOB 或异常证据，不执行破坏性 gadget。 3. JNDI 回连只证明查找行为；报告需说明可达影响和环境条件。 4. 不向生产目标投递公开武器化 gadget 链。 5. 版本指纹必须与入口、配置和可达性共同验证。 ## Chain Questions - 哪个解析器接受什么格式，类型信息由谁控制？ - 可控数据能否触发类加载、setter、回调、外部查找或模板执行？ - 认证、签名或加密是否在反序列化前真正验证？ - 最小证据能否区分解析、查找与实际执行？
Read the whole file at its exact version.
How to install
mdr add hellodqy/mastermind-bug-bounty/deserialization@sha256:a2d48ee40079cf8aThe line at the top of this page pins the label git:20260914.819e838, 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_qa3qxnvxbzo4ibye)
3 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 1 version of this file, committed on Sep 14, 2026.
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 (1345 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
hellodqy/mastermind-bug-bounty · 14 stars · license none declared · pushed 2026-09-16 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_qa3qxnvxbzo4ibye GET https://markdownregistry.com/api/v1/resolve?ref=hellodqy/mastermind-bug-bounty/deserialization GET https://markdownregistry.com/api/v1/blob/a2d48ee40079cf8a6bcb8782c5e1fee91545b3c54f608228d7daf4ecf743f9ec
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.