ctf-reverse

Provides reverse engineering techniques for CTF challenges. Use when the main job is to understand how a compiled, obfuscated, packed, or virtualized target works before exploiting or solving it, including binaries, APKs, WASM, firmware, custom VMs, bytecode, game clients, malware-like loaders, and anti-debug or anti-analysis logic. Do not use it when the vulnerability is already understood and the remaining task is exploitation; use pwn instead. Do not use it for pure web workflows, log or disk forensics, or standalone crypto problems unless reversing the implementation is the real blocker.

Quality

100%

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Critical

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Quality

Content

100%Weight 40%Scale 1-3

Reviews the quality of instructions and guidance provided to agents. Good implementation is clear, handles edge cases, and produces reliable results.

The body is a well-organized reverse-engineering quick reference: lean inline commands and a triage workflow, supported by a clearly signaled one-level-deep file index. It assumes Claude's competence and avoids concept re-explanation.

Dimension	Reasoning	Score
Conciseness	The body is lean and command-driven — "strings binary \| grep -E", "b *main+0xca", "x/s $rsi" — with no concept explanations Claude already knows; the dense reference index is purposeful navigation rather than padding.	3 / 3
Actionability	It provides copy-paste-ready commands across static and dynamic analysis (r2, GDB, ltrace/strace, angr, Frida) plus concrete patterns such as "XOR with position index (^ i or ^ (i & 0xff))", fully executable guidance.	3 / 3
Workflow Clarity	The numbered "Problem-Solving Workflow" is a clear escalation ladder (strings → ltrace/strace → Frida → angr → Qiling → map control flow → automate → validate) with an explicit validation step ("Validate assumptions by comparing decompiler outputs") and a "When to Pivot" redirect table.	3 / 3
Progressive Disclosure	It is a concise overview (Quick Wins, workflow, quick reference) plus a categorized, one-level-deep index of ~20 supporting files each with a one-line description, matching the anchor-3 pattern of well-signaled single-depth references.	3 / 3
	Total	12 / 12 Passed

Description

100%Weight 40%Scale 1-3

Based on the skill's description, can an agent find and select it at the right time? Clear, specific descriptions lead to better discovery.

The description is third-person, concise, and tightly scoped: it states concrete capabilities, natural trigger terms, clear use-conditions, and explicit boundaries against adjacent skills. It is a strong, low-conflict trigger description.

Dimension	Reasoning	Score
Specificity	"Provides reverse engineering techniques" names the action, and it enumerates concrete target types — "binaries, APKs, WASM, firmware, custom VMs, bytecode, game clients, malware-like loaders, and anti-debug or anti-analysis logic" — far more comprehensive than the anchor-2 example.	3 / 3
Completeness	It states both what ("reverse engineering techniques for CTF challenges") and when ("Use when the main job is to understand how a compiled, obfuscated, packed, or virtualized target works"), plus explicit negative triggers ("Do not use it when the vulnerability is already understood... use pwn instead").	3 / 3
Trigger Term Quality	Natural terms a user would say in a CTF/RE context are well covered: "reverse engineering", "CTF challenges", "obfuscated, packed, or virtualized", "APKs", "WASM", "firmware", "custom VMs", "anti-debug", matching the anchor-3 breadth.	3 / 3
Distinctiveness Conflict Risk	The CTF reverse-engineering niche is sharply bounded with explicit disambiguation against pwn, web, forensics, crypto, and malware skills, making wrong-skill triggering unlikely.	3 / 3
	Total	12 / 12 Passed

Validation

87%

Warnings & errors only

Checks the skill against the spec for correct structure and formatting. All validation checks must pass before discovery and implementation can be scored.

Validation — 14 / 16 Passed

Validation for skill structure

Criteria	Description	Result
metadata_version	'metadata.version' is missing	Warning
relative_links	Relative link issues: 19 missing	Warning

	Total	14 / 16 Passed

Repository: ljagiello/ctf-skills
Path: ctf-reverse/SKILL.md
Commit: d19f35f

Reviewed: 9 days ago

Table of Contents

Discovery Implementation Validation

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