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windows-kernel-security

Guide for Windows kernel internals and security mechanisms used in game protection and low-level research. Use this skill when working with drivers, IRQL-sensitive callbacks, EPROCESS, ETHREAD, MMVAD internals, IOCTL paths, DSE, PatchGuard, HVCI, PiDDBCache, MmUnloadedDrivers, or kernel memory inspection.

60

Quality

72%

Does it follow best practices?

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SecuritybySnyk

Critical

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tessl review fix ./.claude/skills/windows-kernel/SKILL.md
SKILL.md
Quality
Evals
Security

Security

3 findings: 2 critical severity, 1 medium severity. Installing this skill is not recommended: please review these findings carefully if you do intend to do so.

Critical

E005: Suspicious download URL detected in skill instructions.

What this means

Detected a suspicious URL in the skill instructions that could lead the agent to download and execute malicious scripts or binaries. This includes links to executables from untrusted sources, typosquatting of official packages, URL shorteners that obscure the destination, and personal file hosting services.

Why it was flagged

These are raw files from a personal GitHub repository (gmh5225/awesome-game-security) that aggregates/archive many third‑party tools (including kernel/cheat/vulnerable-driver projects like pcileech and GameDebugMenu); while the links are text/README/archive entries (not direct .exe downloads), that repository functions as an index/distribution point for potentially dangerous tools and thus should be treated as a suspicious download source — the Microsoft symbol server URL is benign.

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Critical

E006: Malicious code pattern detected in skill scripts.

What this means

Detected high-risk code patterns in the skill content — including its prompts, tool definitions, and resources — such as data exfiltration, backdoors, remote code execution, credential theft, system compromise, supply chain attacks, and obfuscation techniques.

Why it was flagged

The document contains explicit, actionable instructions for kernel exploitation, security‑bypass techniques (ETW/PatchGuard/DSE), firmware persistence (EFI bootkits/ExitBootServices), and methods to achieve stealthy kernel code execution — high risk for malicious misuse.

Medium

W013: Attempt to modify system services in skill instructions.

What this means

The skill prompts the agent to compromise the security or integrity of the user’s machine by modifying system-level services or configurations, such as obtaining elevated privileges, altering startup scripts, or changing system-wide settings.

Why it was flagged

The skill contains explicit, actionable guidance for bypassing Windows security (disabling DSE, PatchGuard bypasses, ETW/driver/EFI tampering, loading unsigned/vulnerable drivers and kernel memory patching), which directs modification of privileged system and kernel state and therefore can compromise the machine.

Low

Low-risk findings.

2 low severity findings. Worth noting, but not necessarily harmful.

Low

W011: Third-party content exposure detected (indirect prompt injection risk).

What this means

The skill exposes the agent to untrusted, user-generated content from public third-party sources, creating a risk of indirect prompt injection. This includes browsing arbitrary URLs, reading social media posts or forum comments, and analyzing content from unknown websites.

Why it was flagged

The required runtime workflow points users to fetch first-party curated content (e.g., a GitHub-hosted raw README and derived archive/description files) but the provided excerpt does not describe any step where outsider-authored free text from an unauthenticated user/submission is ingested without first selecting a specific item.

Low

W012: Unverifiable external dependency detected (runtime URL that controls agent).

What this means

The skill fetches instructions or code from an external URL at runtime, and the fetched content directly controls the agent’s prompts or executes code. This dynamic dependency allows the external source to modify the agent’s behavior without any changes to the skill itself.

Why it was flagged

The skill explicitly instructs the agent at runtime to fetch and use remote README/archive/description files (e.g. https://raw.githubusercontent.com/gmh5225/awesome-game-security/refs/heads/main/README.md) to construct responses, so external content from raw.githubusercontent.com is required and will directly control prompts.

Repository
gmh5225/awesome-game-security
Audited
Security analysis
Snyk

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