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attack-chain

Use for authorized multi-stage attack-path planning and orchestration when a task spans reconnaissance, initial access, privilege escalation, lateral movement, or impact assessment. Route single-stage tasks directly to their specialist skill.

58

Quality

67%

Does it follow best practices?

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SecuritybySnyk

Critical

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tessl review fix ./skills/attack-chain/SKILL.md
SKILL.md
Quality
Evals
Security

Security

4 findings: 2 critical severity, 1 high 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

Multiple URLs point to direct downloads of active Windows payloads (exe, HTA, SCT, MSI) hosted on an untrusted "evil" host — classic high-risk indicators used to distribute malware and to be invoked by LOLBins in the provided playbooks.

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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 content contains explicit, actionable offensive playbooks (initial access, webshell/RCE, credential theft with Mimikatz, persistence, C2/evasion, log wiping and data access) clearly intended to enable compromise and unauthorized data exfiltration.

High

W007: Insecure credential handling detected in skill instructions.

What this means

The skill handles credentials insecurely by requiring the agent to include secret values verbatim in its generated output. This exposes credentials in the agent’s context and conversation history, creating a risk of data exfiltration.

Why it was flagged

This skill explicitly instructs hunting for and using credentials (grep for api_key/secret/password, cloud metadata access) and shows many commands that embed plaintext passwords/NTLM hashes/API keys in CLI invocations and scripts, so an LLM coordinating or emitting those commands would likely need to handle or output secret values verbatim, creating a high exfiltration risk.

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 explicitly instructs creating user accounts, planting SSH keys, writing/modifying root-owned system files (e.g. /etc/ld.so.preload, /etc/systemd/system), clearing logs, and using sudo-based escalation commands — all actions that alter the host state and require elevated privileges.

Repository
zhaoxuya520/reverse-skill
Audited
Security analysis
Snyk

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