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.
npx skills add SecurityTalent/bugskill-ai --skill mobile-resiliencegit clone --depth 1 https://github.com/SecurityTalent/bugskill-aiWrote 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.
[](https://agentmods.dev/skills/securitytalent/bugskill-ai/mobile-resilience)<a href="https://agentmods.dev/skills/securitytalent/bugskill-ai/mobile-resilience"><img src="https://agentmods.dev/badge/skills/securitytalent/bugskill-ai/mobile-resilience/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.
<a href="https://agentmods.dev/skills/securitytalent/bugskill-ai/mobile-resilience"><img src="https://agentmods.dev/badge/skills/securitytalent/bugskill-ai/mobile-resilience.svg" alt="Reviewed on agentmods" width="80" height="20"></a>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.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5.1 | $0.00131 | $0.02192 |
| Opus 5.5 | $0.00052 | $0.00877 |
| Sonnet 5.5 | $0.00026 | $0.00438 |
| Haiku 4.5 | $0.00013 | $0.00219 |
Grade A, and why
mobile-resilience 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 20d 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.
How it starts
The opening of the file, as written. The whole thing — 166 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Mobile Resilience Against Reverse Engineering
What Is Broken and Why
Resilience controls protect app logic, keys, and business rules from reverse engineering and tampering. Root/jailbreak detection, anti-debugging, and integrity checks create defense-in-depth. Without them, attackers can attach Frida to patch auth checks, repack APKs with modified logic, or extract keys from memory at leisure. Most basic resilience checks are bypassable individually — the value comes from layered controls that raise the cost of attack. Root detection that relies on a single file check (/system/app/Superuser.apk) is trivially bypassed; multi-vector detection that checks file system, build properties, and system call behavior is significantly harder.
Key Signals
get-task-allowentitlement present in iOS app (allows debugger attachment)- Debug symbols not stripped in release build:
nm libapp.so | grep "T _"shows function names - Single-vector root/jailbreak detection: only checks for
/system/xbin/suor Cydia URL scheme - No anti-debugging:
ptrace(PT_DENY_ATTACH, 0, 0, 0)/sysctlchecks absent in iOS binary - Debug build shipped to production:
BuildConfig.DEBUG == true,android:debuggable="true" - No signature/integrity check — APK can be repackaged and re-signed without detection
- Frida/objection successfully attaches without app detecting or exiting
- ProGuard/R8 not applied: decompiled class names match original Java package structure
- Emulator detection absent: app runs on AVD/Simulator with full functionality
Methodology
Android:
- Check
android:debuggablein manifest — should befalsein release build - Attach debugger:
adb shell jdwp | xargs→ connect Android Studio debugger → if attaches: no anti-debug - Run on emulator (AVD) — does the app detect and exit?
- Root check bypass: run app on Magisk-rooted device, then apply MagiskHide/Shamiko — does app still detect root?
- Frida attach:
frida -U -f TARGET_PKG— if no crash/exit: no Frida detection - Repack test:
apktool b app/ -o repack.apk→ sign → install — does app accept repackaged build? - Check obfuscation:
jadx decompiled/— are class/method names meaningful (no obfuscation) or mangled?
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.
- 20d ago First seen · 166 lines · 131 tokens per session scan A d1e43358ce57
mobile-resilience is a skill published in the GitHub repository SecurityTalent/bugskill-ai (13 stars, last pushed 21d ago), licensed MIT. It adds 131 tokens to every session and 2,192 once invoked, about $0.0005 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 2026-09-27.
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