analyzing-ios-app-security-with-objection
Performs runtime mobile security exploration of iOS applications using Objection, a Frida-powered toolkit that enables security testers to interact with app internals without jailbreaking. Use when assessing iOS app security posture, bypassing client-side protections, dumping keychain items, inspecting filesystem storage, and evaluating runtime behavior. Activates for requests involving iOS security testing, Objection runtime analysis, Frida-based iOS assessment, or mobile runtime exploration.
68
82%
Does it follow best practices?
Impact
—
No eval scenarios have been run
Passed
No known issues
Quality
Discovery
100%Based on the skill's description, can an agent find and select it at the right time? Clear, specific descriptions lead to better discovery.
This is an excellent skill description that clearly defines a narrow, specific domain (iOS runtime security testing with Objection/Frida), lists concrete actions, and provides explicit trigger guidance with both 'Use when' and 'Activates for' clauses. The description uses proper third-person voice throughout and includes natural keywords that security testers would use.
| Dimension | Reasoning | Score |
|---|---|---|
Specificity | Lists multiple specific concrete actions: 'bypassing client-side protections, dumping keychain items, inspecting filesystem storage, and evaluating runtime behavior.' Also names the specific tools (Objection, Frida) and platform (iOS). | 3 / 3 |
Completeness | Clearly answers both 'what' (runtime mobile security exploration with specific actions like dumping keychain, bypassing protections) and 'when' with explicit triggers ('Use when assessing iOS app security posture...' and 'Activates for requests involving...'). | 3 / 3 |
Trigger Term Quality | Includes strong natural keywords users would say: 'iOS security testing', 'Objection', 'Frida', 'mobile runtime exploration', 'keychain', 'jailbreaking', 'bypass', 'runtime analysis'. Good coverage of terms a security tester would naturally use. | 3 / 3 |
Distinctiveness Conflict Risk | Highly distinctive niche: iOS-specific, Objection/Frida-specific runtime security testing. Very unlikely to conflict with other skills due to the narrow domain and specific tooling mentioned. | 3 / 3 |
Total | 12 / 12 Passed |
Implementation
64%Reviews the quality of instructions and guidance provided to agents. Good implementation is clear, handles edge cases, and produces reliable results.
The skill provides highly actionable, executable Objection commands organized across a logical 7-step iOS security assessment workflow. Its main weaknesses are the inclusion of unnecessary definitional content (Key Concepts, Tools & Systems) that Claude already knows, and the absence of explicit validation checkpoints between workflow steps—particularly important given that runtime instrumentation operations can fail silently or crash the target app.
Suggestions
Remove or drastically reduce the 'Key Concepts' and 'Tools & Systems' sections—Claude already knows what Frida, Keychain, and SSL pinning are. Keep only non-obvious, Objection-specific behavioral notes.
Add explicit validation checkpoints after critical steps (e.g., after Step 2: verify attachment succeeded with a specific command; after Step 4: confirm pinning bypass by checking proxy traffic), and include error recovery guidance inline rather than only in a separate pitfalls section.
Consider splitting the per-MASVS-category command references into a separate COMMANDS_REFERENCE.md file, keeping SKILL.md as a concise workflow overview with the most essential commands.
| Dimension | Reasoning | Score |
|---|---|---|
Conciseness | The skill includes a 'Key Concepts' table defining terms like 'Keychain' and 'SSL Pinning Bypass' that Claude already understands, and the 'Tools & Systems' section restates information already evident from the commands. The workflow steps themselves are reasonably efficient, but the definitional sections add unnecessary tokens. | 2 / 3 |
Actionability | The skill provides fully executable, copy-paste-ready commands throughout all workflow steps. Each step includes specific Objection/Frida CLI commands with realistic arguments, covering keychain dumping, SSL pinning bypass, method hooking, memory searching, and more. | 3 / 3 |
Workflow Clarity | The workflow has clear sequential steps covering environment setup through platform interaction review, but lacks explicit validation checkpoints and feedback loops. There's no 'verify this worked before proceeding' step after critical operations like SSL pinning bypass or Frida attachment, and no error recovery guidance within the workflow itself (pitfalls are separated at the end). | 2 / 3 |
Progressive Disclosure | The content is a monolithic document with no references to supporting files. At ~150 lines with detailed command references for 7 workflow steps plus supplementary sections, some content (e.g., the full MASVS category command references) could be split into separate reference files. However, for a skill of this size it remains navigable due to clear section headers. | 2 / 3 |
Total | 9 / 12 Passed |
Validation
90%Checks the skill against the spec for correct structure and formatting. All validation checks must pass before discovery and implementation can be scored.
Validation — 10 / 11 Passed
Validation for skill structure
| Criteria | Description | Result |
|---|---|---|
frontmatter_unknown_keys | Unknown frontmatter key(s) found; consider removing or moving to metadata | Warning |
Total | 10 / 11 Passed | |
- Repository
- mukul975/Anthropic-Cybersecurity-Skills
- Commit
0f429d0
- Reviewed
Table of Contents
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