SKILLEMALL.ai

BC Privilege Escalation Methods

This skill should be used when the user asks to "escalate privileges", "get root access", "become administrator", "privesc techniques", "abuse sudo", "exploit SUID binaries", "Kerberoasting", "pass-the-ticket", "token impersonation", or needs guidance on post-exploitation privilege escalation for Linux or Windows systems.

modbender/skill-library-mcp Agent Skills author: modbender MIT 1 file body ≈ 1 923 tokens Open the sourcegithub.com analyzed 2 d ago

This skill should be used when the user asks to "escalate privileges", "get root access", "become administrator", "privesc techniques", "abuse sudo", "exploit…

As a process C 60/100 · Has gaps — weak spots: result and completion, consistency, progress reporting

ProcedureMySQLSoftware developmentSecuritytype and topics are labelled automatically from the skill text
JSON
Technical rating
B
78/100
safety, quality, tests
Safety 60%
76
Quality 40%
80
Run on models
none yet
Process rating
C
60/100
Has gaps
Result and completion w 14
0
Progress reporting w 2
0
Consistency w 8
40
the three weakest of ten parameters · all ten

The same skill appears in 1 more place: RA-Skills

What is at stake

Medium-severity findings: the skill is probably honest, but read what alarmed the scanner.

Dangerous commands medium severity

Below is the worst case for this category. The finding here is medium: the guard saw a sign, not a proof.

If you install

The skill contains commands that delete files, rewrite disks or execute code fetched from the network. The agent may run them without asking if it believes the instructions require it.

For the author

Replace destructive commands with safe equivalents that ask for confirmation, scope them to one folder, and stop piping curl into a shell: pin a version and a checksum.

Exfiltration medium severity

Below is the worst case for this category. The finding here is medium: the guard saw a sign, not a proof.

If you install

The instructions or scripts send data out: environment variables, keys, file contents, chat history. You may never notice, because the agent performs the upload as "part of the task".

For the author

If the upload is not needed for the task, remove it: catalogs flag such skills and delist them. If it is needed, name the destination explicitly, say what leaves the machine, and give the user a switch.

How to improve

    For the model run — optional
    • Your own cases (evals/evals.json, 4–6 real requests with expected answers): the full check would then run those instead of a model-drafted suite.
    • A spec.yaml with trigger phrases and assertions — a behaviour contract for CI; `skilltest init` writes a template.

    Guard findings · 12

    ✓ No critical or high findings

    Medium and low: 12
    • medium Dangerous commands cmd-persistence SKILL.md:60
      Persistence mechanism (cron / launchd / scheduled task / autorun registry) (documentation of a security skill)
      cat /etc/crontab
      security skill
    • medium Exfiltration exfil-read-secret-files SKILL.md:83
      Reads credential / secret files (documentation of a security skill)
      /usr/bin/tar -cvf key.tar /root/.ssh/id_rsa
      security skill
    • medium Dangerous commands cmd-persistence SKILL.md:210
      Persistence mechanism (cron / launchd / scheduled task / autorun registry) (documentation of a security skill)
      schtasks /create /S DOMAIN /SC Weekly /RU "NT Authority\SYSTEM" `
      security skill
    • low Risky intent intent-offensive-security SKILL.md:2
      Offensive-security / dual-use content (legitimate for authorised testing; review intended use)
      name: Privilege Escalation Methods
    • low Risky intent intent-offensive-security SKILL.md:3
      Offensive-security / dual-use content (legitimate for authorised testing; review intended use) (quoted — discussed, not commanded)
      description: This skill should be used when the user asks to "escalate privileges", "get root access", "become administrator", "privesc techniques", "abuse sudo", "exploit SUID binaries", "Kerberoasti
      quoted
    • low Risky intent intent-offensive-security SKILL.md:9
      Offensive-security / dual-use content (legitimate for authorised testing; review intended use)
      # Privilege Escalation Methods
    • low Risky intent intent-offensive-security SKILL.md:13
      Offensive-security / dual-use content (legitimate for authorised testing; review intended use)
      Provide comprehensive techniques for escalating privileges from a low-privileged user to root/administrator access on compromised Linux and Windows systems. Essential for penetration testing post-expl
    • low Risky intent intent-offensive-security SKILL.md:18
      Offensive-security / dual-use content (legitimate for authorised testing; review intended use)
      - Kali Linux or penetration testing distribution
    • low Dangerous commands cmd-privilege SKILL.md:48
      Privilege escalation / world-writable permissions (documentation of a security skill)
      sudo python -c 'import pty;pty.spawn("/bin/bash")'
      security skill

    A further 3 matches are quotations in this security skill's documentation and are not counted as findings.

    Files scanned: 1. Evidence is masked. Grey chips explain why severity was lowered.

    Against the Agent Skills spec

    • warning name-format name should be kebab-case (lowercase letters, digits, hyphens)

    Process rating: all ten parameters 60/100

    • 0Result and completion. Does not say what the result is
    • 0Progress reporting. Says nothing while it works
    • 40Consistency. Frontmatter name (Privilege Escalation Methods) differs from the folder (privilege-escalation-methods)
    • 50Failures and branches. 0 branches, has a failure section
    • 60Tools and files. Uses tools (bash) that frontmatter does not declare
    • 70When it triggers. States when to use, but not when not to
    • 70Inputs and preconditions. Inputs and preconditions are listed
    • 100Steps. 22 steps
    • 100Execution cost. Instruction body is 1923 tokens
    • 100Running it twice. No mutating operations

    Everything here is measured from the skill text rather than judged by a model, so the numbers are checkable. A parameter weighs more when it is a more common reason for the process to stall.

    Quality signals

    • +4Description does not say when NOT to use the skill (false activations)
    • +3Output format is not stated: the model decides each time
    • -4Absolute local paths (C:\Users, /home/…): not portable
    • +1No license
    • +2Single-language instructions
    • +5Description quotes 9 example trigger phrases
    • +3Description length 323: enough signal without eating the budget
    • +4Structure: 34 headings
    • +3Step-by-step instructions: 22 items
    • +4Has examples (20 code blocks)

    Quality base 70; lint remarks subtract, signals add up to 100. Result: 80.