offensive-fuzzing SKILL.md skillA
offensive-fuzzing from miosa-osa/osa is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add miosa-osa/osa/offensive-fuzzing@git:20260913.e13b6b8Pins git:20260913.e13b6b8 in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- miosa-osa/osa
- Path
priv/skills/offensive-fuzzing/SKILL.md- Versions recorded
- 1
- Latest version
- git:20260913.e13b6b8, committed Sep 13, 2026
- Size
- 12,986 bytes
- Repository stars
- 78
- License
- Apache-2.0
Practical offensive fuzzing methodology covering target identification, fuzzer selection (AFL++, libFuzzer, Honggfuzz, Boofuzz, syzkaller), harness writing, corpus curation, mutation strategies, coverage measurement, and crash triage. Use when setting up or running fuzz campaigns against any target: file parsers, network protocols, kernel drivers, EDR engines, embedded firmware, or language runtimes.
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
# Offensive Fuzzing ## Fuzzer Types | Type | Coverage | Speed | Tools | |------|----------|-------|-------| | BlackBox | Poor | Fast | Peach, Boofuzz | | GreyBox | Good | Fast | AFL++, Honggfuzz, libFuzzer, WinAFL | | Snapshot | Good | Fastest | Nyx, wtf, Snapchange | | WhiteBox | Best | Slow | KLEE, QSYM, SymSan | | Ensemble | Best | Fast | AFL++ + Honggfuzz + libFuzzer | **GreyBox sub-variants:** Directed (AFLGo, UAFuzz), Grammar (AFLSmart, Tlspuffin), Concolic (QSYM, Driller), Kernel (syzkaller, kAFL, wtf). ## Core Workflow ``` Research target → Choose analyses → Build harness → Seed corpus → Instrument → Fuzz → Triage crashes → Report ``` ### 1. Research Target - Map all input surfaces (files, network, IPC, syscalls, IOCTL) - Identify high-value areas: previously patched code, complex parsers, newly added code, input ingestion points - For kernel modules: look beyond `copy_from_user` — DMA-BUF ops, page fault handlers, VM operation structs, allocation callbacks ### 2. Instrument and Build ```bash # AFL++ (preferred for GreyBox) CC=afl-clang-fast CXX=afl-clang-fast++ cmake -DCMAKE_BUILD_TYPE=Release .. && make -j # libFuzzer + ASan/UBSan (C/C++) …
Read the whole file at its exact version.
How to install
mdr add miosa-osa/osa/offensive-fuzzing@sha256:7b38f3022cc7e583The line at the top of this page pins the label git:20260913.e13b6b8, 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_khlwoody62lyjily)
6 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 1 version of this file, committed on Sep 13, 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 (12986 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
miosa-osa/osa · 78 stars · license Apache-2.0 · pushed 2026-10-29 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_khlwoody62lyjily GET https://markdownregistry.com/api/v1/resolve?ref=miosa-osa/osa/offensive-fuzzing GET https://markdownregistry.com/api/v1/blob/7b38f3022cc7e583256c36e4b13a42a5b1b68ddfb402460f95d85a6682c89ff4
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.