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netexec

NetExec (CrackMapExec successor) — unified SMB/LDAP/MSSQL/WinRM/RDP/SSH/FTP/VNC protocol auth + post-auth modules. 200+ modules incl. BloodHound auto-ingest, ESC1-15 scanning, PrintNightmare, LDAP relay.

61

Quality

73%

Does it follow best practices?

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SecuritybySnyk

Critical

Do not install without reviewing

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tessl review fix ./packages/decepticon/decepticon/skills/standard/ad/netexec/SKILL.md
SKILL.md
Quality
Evals
Security

Security

3 findings: 2 critical severity, 1 high 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

This is a third‑party GitHub repository hosting an offensive pentesting tool (NetExec) that provides modules to dump credentials and perform attacks — while it's source code rather than an official vendor binary, it is dual‑use and an unvetted download source that could be used to distribute malware or facilitate attacks.

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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

This playbook intentionally documents and automates offensive operations—credential harvesting (NTDS/LSASS/hash dumps, Kerberoast/AS-REP), lateral-movement scans, password spraying, and exploitation modules (PrintNightmare, Zerologon)—which enable unauthorized compromise and data exfiltration if misused.

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

The skill repeatedly requires embedding plaintext passwords and NTLM hashes directly into command-line arguments and programmatically concatenates user-supplied secrets into shell commands (e.g., -p, -H), which forces the LLM to handle and output secret values verbatim.

Low

Low-risk findings.

1 low severity finding. 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 workflow runs NetExec (e.g., `nxc smb ... --spider-plus ... --output-folder /tmp/spider` and other reconnaissance modules) which can fetch and ingest remote host file contents into artifacts (e.g., spider results and logs/JSON) that are then parsed/returned to the agent (Decepticon integration reads `/tmp/nxc.json` via `read_text()`), so the LLM may receive outsider-authored free text originating from remote systems/SMB shares discovered at runtime.

Repository
PurpleAILAB/Decepticon
Audited
Security analysis
Snyk

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