offensive-crash-analysis

offensive-crash-analysis is a skill for Claude Code, Codex from Miosa-osa/OSA. It costs 64 tokens per session (1,976 once invoked), scanned A, original, Apache-2.0.

A crash-analysis and exploit-development course covering WinDbg and GDB, which are debuggers for examining program failures. It also explains sanitizer reports, registers, stack traces, and whether a crash may be exploitable.

In plain words
What is it for?
Use it to triage crash dumps, interpret AddressSanitizer and MemorySanitizer output, identify root causes, and assess exploitability.
Why use it?
It helps turn a raw crash or fuzzer result into an explanation of the underlying bug. This makes it easier to decide which failures need urgent attention.

Skill for Claude CodeCodex

Written for no agent in particular: nothing here depends on one.

Good fit Use it to triage crash dumps, interpret AddressSanitizer and MemorySanitizer output, identify root causes, and assess exploitability.

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Install with agentmods
npx agentmods add skills/miosa-osa/osa/offensive-crash-analysis
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 Miosa-osa/OSA --skill offensive-crash-analysis
Clone the repo
git clone --depth 1 https://github.com/Miosa-osa/OSA

Made for: Claude Code, Codex.

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 offensive-crash-analysis

README.md
[![agentmods](https://agentmods.dev/badge/skills/miosa-osa/osa/offensive-crash-analysis/github.svg)](https://agentmods.dev/skills/miosa-osa/osa/offensive-crash-analysis)
Your own site
<a href="https://agentmods.dev/skills/miosa-osa/osa/offensive-crash-analysis"><img src="https://agentmods.dev/badge/skills/miosa-osa/osa/offensive-crash-analysis/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 offensive-crash-analysis

Your own site · 80×15
<a href="https://agentmods.dev/skills/miosa-osa/osa/offensive-crash-analysis"><img src="https://agentmods.dev/badge/skills/miosa-osa/osa/offensive-crash-analysis.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 64 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,976 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 original 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 $0.00064 $0.01976
Opus 5.5 $0.00026 $0.00790
Sonnet 5.5 $0.00013 $0.00395
Haiku 4.5 $0.00006 $0.00198

Measured 1mo ago against content hash 8ab5427c83fe, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

offensive-crash-analysis 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 1mo ago.

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.

priv/skills/offensive-crash-analysis/SKILL.md · 187 lines

How it starts

The opening of the file, as written. The whole thing — 187 lines — stays where its author put it; the contents beside it link to each section on GitHub.

SKILL: Week 4: Crash Analysis and Exploitability Assessment

Metadata

Description

Week 4 exploit development curriculum. Crash triage and analysis methodology: WinDbg/GDB analysis, ASAN/MSAN output interpretation, exploitability assessment, register/stack trace reading, root cause identification. Use when analyzing crash dumps, assessing exploitability, or understanding fuzzer-generated crashes.

Trigger Phrases

Use this skill when the conversation involves any of: crash analysis, crash triage, WinDbg, GDB, ASAN, MSAN, exploitability, stack trace, register dump, segfault, null deref, access violation, week 4

Full Methodology

Week 4: Crash Analysis and Exploitability Assessment

Overview

created by AnotherOne from @Pwn3rzs Telegram channel.

After finding potential vulnerabilities through fuzzing (Week 2) or patch diffing (Week 3), the next critical step is analyzing crashes to determine if they're exploitable. This week focuses on crash triage, debugger mastery, and techniques for identifying how to reach vulnerable code paths from attacker-controlled input.

Once you've confirmed a crash is exploitable and built a PoC, you'll be ready for Basic Exploitation in Week 5.

Prerequisites

Before starting this week, ensure you have:

  • A Windows VM (for WinDbg labs) and a Linux VM (for GDB/ASAN/CASR labs).
  • Completed Week 2 fuzzing labs, including running AFL++ or libFuzzer against at least one C/C++ target
  • Completed (or skimmed) Week 3 patch diffing labs:
    • Familiar with Ghidriff/Diaphora diff reports and how to interpret changed functions
    • Understand how to extract Windows updates and Linux kernel patches
    • Reviewed at least one case study (CVE-2022-34718 EvilESP, CVE-2024-1086 nf_tables, or 7-Zip symlink bugs)
  • Comfortable understanding from Week 1 of basic vulnerability classes (buffer overflow, UAF, integer bugs, info leaks) and their exploit primitives

Read the full file on GitHub · 187 lines

Files

What ships with it

1 file 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. 1mo ago First seen · 187 lines · 64 tokens per session scan A 8ab5427c83fe

Subscribe to this mod's changes

offensive-crash-analysis is a skill published in the GitHub repository Miosa-osa/OSA (78 stars, last pushed 7d ago), licensed Apache-2.0. It adds 64 tokens to every session and 1,976 once invoked, about $0.0003 per session on Opus 5.5. 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 2026-09-14.