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schwarztim

Mimikatz MCP Server

by schwarztim

mimikatz_kerberos_silver

Create a Silver Ticket to gain service-specific Kerberos access using domain SID, service hash, and impersonated user for targeted lateral movement.

Instructions

Create a Silver Ticket for service-specific access

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
sidYesDomain SID
userYesUsername to impersonate
domainYesDomain FQDN
targetYesTarget service (e.g., cifs/server.domain.com)
serviceYesService type (e.g., cifs, http, ldap)
service_hashYesService account NTLM hash

Schema Changelog

Changes observed during successful MCP inspections.

  1. First observedv1.0.0

TDQS

C2.9/5.0
Behavior2/5

Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?

With no annotations provided, the description carries the full burden of behavioral disclosure. 'Create' implies a forging operation, but the description does not explain whether the ticket is injected into memory, saved to disk, or simply produced as output. It also omits any security or side-effect context.

Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.

Conciseness4/5

Is the description appropriately sized, front-loaded, and free of redundancy?

The description is a single, front-loaded sentence with no wasted words. It is concise but perhaps overly brief, sacrificing useful operational context for brevity.

Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.

Completeness2/5

Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?

This is a security-sensitive tool with 6 required parameters, no annotations, and no output schema, yet the description only provides a one-line summary. It does not explain the tool's role in the broader Kerberos attack flow, what happens after ticket creation, or how it relates to sibling tools like ptt or golden.

Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.

Parameters3/5

Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?

Schema description coverage is 100%, so every parameter already has a clear meaning in the input schema. The description itself adds no parameter-level nuance beyond what the schema provides, which matches the baseline score for high schema coverage.

Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.

Purpose4/5

Does the description clearly state what the tool does and how it differs from similar tools?

The description clearly states a specific action ('Create') and resource ('Silver Ticket'), and adds 'service-specific access' to differentiate it from broader ticket-forging tools. However, it does not explicitly name any sibling tool, so differentiation is implied rather than stated.

Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.

Usage Guidelines2/5

Does the description explain when to use this tool, when not to, or what alternatives exist?

The description gives no guidance on when to use this tool versus alternatives like mimikatz_kerberos_golden or mimikatz_kerberos_ptt. There is no mention of prerequisites, post-creation steps, or conditions that would make this tool preferable.

Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.