Analyzing iOS Binaries
trilwu/secskills
Analyze iOS applications at the binary level — decrypting FairPlay-protected IPAs with frida-ios-dump or bagbak, inspecting Mach-O load commands, recovering Objective-C headers with class-dump, and…
Secure iOS apps with secure storage, biometrics, and data protection.
Install iOS Security
$ npx skills add HoangNguyen0403/agent-skills-standard --skill ios-security -a claude-codeProject install by default; add -g for ~/.claude/skills/.
$ gh skill install HoangNguyen0403/agent-skills-standard ios-security --agent claude-codeProject scope by default; add --scope user for a personal install. Needs GitHub CLI 2.90.0 or later (public preview).
$ git clone --depth 1 https://github.com/HoangNguyen0403/agent-skills-standard.git skills-src && mkdir -p .claude/skills && cp -r skills-src/skills/ios/ios-security .claude/skills/ios-security && rm -rf skills-srcUse ~/.claude/skills/ instead of .claude/skills for a personal install. The folder must contain SKILL.md.
Claude Code skills documentation · loads skills from .claude/skills/
Install the "ios-security" agent skill from https://github.com/HoangNguyen0403/agent-skills-standard/tree/develop/skills/ios/ios-security into .claude/skills/ios-security/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "ios-security", then confirm the skill loads.Claude Code copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$skill-installer install https://github.com/HoangNguyen0403/agent-skills-standard/tree/develop/skills/ios/ios-securityType this inside Codex. $skill-installer <name> installs a curated skill from openai/skills. The installer writes to $CODEX_HOME/skills (default ~/.codex/skills). Restart Codex if the skill does not show up.
$ npx skills add HoangNguyen0403/agent-skills-standard --skill ios-security -a codexProject install goes to .agents/skills/; add -g for ~/.codex/skills/.
$ gh skill install HoangNguyen0403/agent-skills-standard ios-security --agent codexProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/HoangNguyen0403/agent-skills-standard.git skills-src && mkdir -p .agents/skills && cp -r skills-src/skills/ios/ios-security .agents/skills/ios-security && rm -rf skills-srcUse ~/.agents/skills/ instead of .agents/skills for a personal install.
Codex skills documentation · loads skills from .agents/skills/
Install the "ios-security" agent skill from https://github.com/HoangNguyen0403/agent-skills-standard/tree/develop/skills/ios/ios-security into .agents/skills/ios-security/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "ios-security", then confirm the skill loads.Codex copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ npx skills add HoangNguyen0403/agent-skills-standard --skill ios-security -a cursorProject install goes to .agents/skills/; add -g for ~/.cursor/skills/.
$ gh skill install HoangNguyen0403/agent-skills-standard ios-security --agent cursorProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/HoangNguyen0403/agent-skills-standard.git skills-src && mkdir -p .cursor/skills && cp -r skills-src/skills/ios/ios-security .cursor/skills/ios-security && rm -rf skills-srcUse ~/.cursor/skills/ instead of .cursor/skills for a personal install.
Cursor skills documentation · loads skills from .cursor/skills/, .agents/skills/, .claude/skills/, .codex/skills/
Install the "ios-security" agent skill from https://github.com/HoangNguyen0403/agent-skills-standard/tree/develop/skills/ios/ios-security into .cursor/skills/ios-security/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "ios-security", then confirm the skill loads.Cursor copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ gemini skills install https://github.com/HoangNguyen0403/agent-skills-standard.git --path skills/ios/ios-security--scope user (default) or --scope workspace; --path is the subfolder of the repo that holds the skill; --consent skips the security confirmation prompt.
$ npx skills add HoangNguyen0403/agent-skills-standard --skill ios-security -a gemini-cliProject install goes to .agents/skills/; add -g for ~/.gemini/skills/.
$ gh skill install HoangNguyen0403/agent-skills-standard ios-security --agent gemini-cliProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/HoangNguyen0403/agent-skills-standard.git skills-src && mkdir -p .gemini/skills && cp -r skills-src/skills/ios/ios-security .gemini/skills/ios-security && rm -rf skills-srcUse ~/.gemini/skills/ instead of .gemini/skills for a personal install, then run /skills reload.
Gemini CLI skills documentation · loads skills from .gemini/skills/, .agents/skills/
Install the "ios-security" agent skill from https://github.com/HoangNguyen0403/agent-skills-standard/tree/develop/skills/ios/ios-security into .gemini/skills/ios-security/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "ios-security", then confirm the skill loads.Gemini CLI copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ gh skill install HoangNguyen0403/agent-skills-standard ios-securityInstalls for Copilot at project scope by default; add --scope user for a personal install. Preview a skill first with gh skill preview. Needs GitHub CLI 2.90.0 or later (public preview).
$ npx skills add HoangNguyen0403/agent-skills-standard --skill ios-security -a github-copilotProject install goes to .agents/skills/; add -g for ~/.copilot/skills/.
$ git clone --depth 1 https://github.com/HoangNguyen0403/agent-skills-standard.git skills-src && mkdir -p .github/skills && cp -r skills-src/skills/ios/ios-security .github/skills/ios-security && rm -rf skills-srcUse ~/.copilot/skills/ instead of .github/skills for a personal install. Commit .github/skills so cloud agent and code review can use it.
GitHub Copilot skills documentation · loads skills from .github/skills/, .claude/skills/, .agents/skills/
Install the "ios-security" agent skill from https://github.com/HoangNguyen0403/agent-skills-standard/tree/develop/skills/ios/ios-security into .github/skills/ios-security/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "ios-security", then confirm the skill loads.GitHub Copilot copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ npx skills add HoangNguyen0403/agent-skills-standard --skill ios-security -a opencodeOpenCode documents no install command of its own. Project install goes to .agents/skills/; add -g for ~/.config/opencode/skills/.
$ gh skill install HoangNguyen0403/agent-skills-standard ios-security --agent opencodeProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/HoangNguyen0403/agent-skills-standard.git skills-src && mkdir -p .opencode/skills && cp -r skills-src/skills/ios/ios-security .opencode/skills/ios-security && rm -rf skills-srcUse ~/.config/opencode/skills/ instead of .opencode/skills for a personal install.
OpenCode skills documentation · loads skills from .opencode/skills/, .claude/skills/, .agents/skills/
Install the "ios-security" agent skill from https://github.com/HoangNguyen0403/agent-skills-standard/tree/develop/skills/ios/ios-security into .opencode/skills/ios-security/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "ios-security", then confirm the skill loads.OpenCode copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
Facts
- Skill name
ios-security- GitHub stars
- 572
- Token cost
- ~500 tokens
- SKILL.md length
- 168 words
- Files
- 3 (incl. references)
- Skills in repo
- 211
- Repo updated
- First seen
- Licence
- MIT
At a glance
Secure iOS apps with secure storage, biometrics, and data protection.
- Works in 6 steps: Store secrets in secure storage — Use… → Add biometric auth — Use… → Encrypt files — Use… → …
- Implementing secure storage
- SKILL.md covers Priority: P0 (CRITICAL), Implementation Workflow, Anti-Patterns and References, plus 2 more sections
- Instructions only: no scripts, shell commands, URLs or credentials in SKILL.md
What it does
iOS Security is an agent skill from HoangNguyen0403/agent-skills-standard. Secure iOS apps with secure storage, biometrics, and data protection. Use when implementing secure storage, Face ID/Touch ID, or data protection in iOS.
Its SKILL.md is about 500 tokens, which your agent loads only when the skill is triggered. The skill folder holds 4 other files, including reference files (for example `evals/evals.json` and `references/implementation.md`).
It sits in Mobile, covering Mobile application security, Privacy and GDPR and iOS development. It works with iOS. The repository describes itself as: A collection of Agent Skills Standard and Best Practice for Programming Languages, Frameworks that help our AI Agent follow best practies on frameworks and programming laguages. The licence is MIT.
When your agent uses it
- Implementing secure storage
- Face ID/Touch ID
- Data protection in iOS
Example prompts
- “/ios-security”
Workflow steps
6 steps, taken from the first numbered list in SKILL.md.
- Store secrets in secure storage — Use SecItemAdd, SecItemUpdate, and SecItemDelete with kSecClassGenericPassword for tokens/PII. Never use…
- Add biometric auth — Use LocalAuthentication with LAContext. Verify availability with canEvaluatePolicy before prompting.
- Encrypt files — Use Data.WritingOptions.completeFileProtection when saving to disk.
- Keep ATS enabled — Never disable App Transport Security globally in the iOS Info configuration.
- Pin certificates — Use ServerTrustManager or TrustKit for production apps to prevent MITM attacks.
- Strip sensitive logs — Ensure PII and tokens removed from logs in Release builds.
What it can do on your machine
Read from SKILL.md and the folder at commit b529c2d. It shows what the files ask for, not the result of running them.
Tool permissions
Pre-approves nothing: there is no allowed-tools line, so your agent's usual permission prompts apply.
From allowed-tools in the SKILL.md frontmatter.
Runs code
No scripts in the folder and no shell commands in SKILL.md.
From the folder's file list and the shell code blocks in SKILL.md.
Network
No URLs in SKILL.md.
From URLs in SKILL.md, links to its own repository left out.
Credentials
Names no API keys, tokens, secrets or passwords.
From names ending in _API_KEY, _TOKEN, _SECRET, _KEY or _PASSWORD in SKILL.md.
Context cost
iOS Security loads about 500 tokens when it runs, and up to ~1.1k if it reads all its reference files. Until then it costs about 41 tokens; SKILL.md has 168 words of instructions outside code blocks.
Estimates: characters ÷ 4, the usual rule of thumb; real counts depend on the model's tokenizer. Scripts and assets cost tokens only if the agent reads them.
Safety
Auto-check passed
The automated check found no risky patterns in SKILL.md.
Automated static check — not a guarantee. Review scripts before installing. It scans the text of SKILL.md for risky patterns (piping downloads into a shell, reading credential files, hidden Unicode, destructive commands); files beside SKILL.md are not scanned.
SKILL.md
The full file from HoangNguyen0403/agent-skills-standard at commit b529c2d, republished under its MIT licence (© HoangNguyen0403). 168 words, ~500 tokens.
Download SKILL.mdSave it as
.claude/skills/ios-security/SKILL.md (or your agent's skills folder). This skill also uses 2 other files; get the full folder from GitHub.- name
- ios-security
- description
- Secure iOS apps with secure storage, biometrics, and data protection. Use when implementing secure storage, Face ID/Touch ID, or data protection in iOS.
iOS Security
Priority: P0 (CRITICAL)
Implementation Workflow
- Store secrets in secure storage — Use
SecItemAdd,SecItemUpdate, andSecItemDeletewithkSecClassGenericPasswordfor tokens/PII. Never useUserDefaults. - Add biometric auth — Use
LocalAuthenticationwithLAContext. Verify availability withcanEvaluatePolicybefore prompting. - Encrypt files — Use
Data.WritingOptions.completeFileProtectionwhen saving to disk. - Keep ATS enabled — Never disable App Transport Security globally in the iOS Info configuration.
- Pin certificates — Use
ServerTrustManagerorTrustKitfor production apps to prevent MITM attacks. - Strip sensitive logs — Ensure PII and tokens removed from logs in Release builds.
See Secure storage and biometrics implementation examples
Anti-Patterns
- No Secrets in
UserDefaults: Always use secure storage for tokens and PII - No Unhandled
LAError: Check foruserCancelandauthenticationFailedin biometric flows - No PII/Token Logging: Strip sensitive data from all logs in Release builds
References
Related Topics
- common/security-standards
- architecture
Canonical response anchors
When this skill applies, preserve the following domain terminology or equivalent concrete examples in the answer when relevant:
- iOS app configuration
- LocalAuthentication
© HoangNguyen0403, MIT. Rendered from Markdown: HTML in the file is shown as text, images as links, and headings moved down two levels. Raw file
Files
SKILL.md and 2 other files (references) in skills/ios/ios-security of HoangNguyen0403/agent-skills-standard.
- SKILL.md
- evals/evals.json
- references/implementation.md
Open the folder on GitHubat commit b529c2d
Compare with similar skills
iOS Security next to the 5 skills that share the most tags, products or categories with it. Stars are the repository's; “used in” counts other GitHub owners with a copy.
| Skill | Stars | Used in | Tokens | Auto-check | Licence | Repo updated |
|---|---|---|---|---|---|---|
| iOS Security this skillHoangNguyen0403/agent-skills-standard | 572 | — | ~500 | Automated safety check: Pass | MIT | |
| Analyzing iOS Binariestrilwu/secskills | 157 | — | ~2k | Automated safety check: Pass | MIT | |
| Performing iOS App Security Assessmentmukul975/Anthropic-Cybersecurity-Skills | 34k | — | ~3k | Automated safety check: Pass | Apache-2.0 | |
| Cryptokitdpearson2699/swift-ios-skills | 1.2k | — | ~3.6k | Automated safety check: Pass | Custom licence | |
| Hig Project Contextraintree-technology/hig-doctor | 144 | 5 repos | ~1.2k | Automated safety check: Pass | MIT | |
| Hig Components Contentraintree-technology/hig-doctor | 144 | 5 repos | ~1.3k | Automated safety check: Pass | MIT |
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Related
Works with
Categories
Questions about iOS Security
What does iOS Security do?
Secure iOS apps with secure storage, biometrics, and data protection. iOS Security is an agent skill from HoangNguyen0403/agent-skills-standard. Secure iOS apps with secure storage, biometrics, and data protection.
When should I use iOS Security?
iOS Security fits situations like: implementing secure storage; face ID/Touch ID; data protection in iOS.
How do I install iOS Security in Claude Code?
Run `npx skills add HoangNguyen0403/agent-skills-standard --skill ios-security -a claude-code`. Or copy the skill folder (skills/ios/ios-security in HoangNguyen0403/agent-skills-standard) into .claude/skills/ios-security in your project. Claude Code loads it when a task matches its description.
How do I install iOS Security in Codex?
Run `npx skills add HoangNguyen0403/agent-skills-standard --skill ios-security -a codex`. Or copy the skill folder (skills/ios/ios-security in HoangNguyen0403/agent-skills-standard) into .agents/skills/ios-security in your project. Codex loads it when a task matches its description.
Can I use iOS Security in Cursor, Gemini CLI or GitHub Copilot?
Cursor, Gemini CLI, GitHub Copilot and OpenCode also load SKILL.md folders. With the skills CLI, run `npx skills add HoangNguyen0403/agent-skills-standard --skill ios-security -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/ios-security, .gemini/skills/ios-security, .github/skills/ios-security and .opencode/skills/ios-security in your project.
What does iOS Security need to run?
SKILL.md names no scripts, command-line tools or credentials: iOS Security is instructions for the agent only.
Does iOS Security access the network?
SKILL.md contains no URLs. Any network use would come from the scripts or tools the agent runs. This is read from the text; nothing was executed.
Is iOS Security safe to install?
Our automated static check of SKILL.md found no risky patterns, such as piping downloads into a shell, reading credential files or hidden Unicode. It is not a guarantee. Review the folder before installing.
What licence does iOS Security use?
iOS Security is published under the MIT licence (the repository's licence). It allows redistribution, so the full SKILL.md is shown on this page.
How many tokens does iOS Security use?
About 500 tokens (SKILL.md is roughly 2k characters). Agents keep only the skill's name and description in context until a task matches; then they load SKILL.md in full. Its references folder adds about 564 tokens, read only when the agent opens those files.
What are the alternatives to iOS Security?
Skills that share tags, products or a category with iOS Security: Analyzing iOS Binaries (trilwu/secskills, 157 stars), Performing iOS App Security Assessment (mukul975/Anthropic-Cybersecurity-Skills, 34k stars), Cryptokit (dpearson2699/swift-ios-skills, 1.2k stars) and Hig Project Context (raintree-technology/hig-doctor, 144 stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.
Who maintains iOS Security?
HoangNguyen0403 (a GitHub user) maintains it in HoangNguyen0403/agent-skills-standard, which has 572 GitHub stars. The repository holds 211 skills in this directory. The repository was last updated on October 9, 2026.
Source: HoangNguyen0403/agent-skills-standard on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.