Class: Msf::MCP::Tools::CredentialInfo

Inherits:
MCP::Tool
  • Object
show all
Extended by:
ToolHelper
Defined in:
lib/msf/core/mcp/tools/credential_info.rb

Overview

MCP Tool: Query Metasploit Database Credentials

Retrieves credential information from the Metasploit database including usernames, password hashes, and authentication data.

Class Method Summary collapse

Methods included from ToolHelper

tool_error_response

Class Method Details

.call(workspace: 'default', limit: Msf::MCP::Security::InputValidator::LIMIT_DEFAULT, offset: 0, server_context:) ⇒ MCP::Tool::Response

Execute credential query with secure memory handling

Parameters:

  • workspace (String) (defaults to: 'default') —

    Workspace name (default: ‘default’)

  • limit (Integer) (defaults to: Msf::MCP::Security::InputValidator::LIMIT_DEFAULT) —

    Maximum results (default: 100)

  • offset (Integer) (defaults to: 0) —

    Results offset (default: 0)

  • server_context (Hash) —

    Server context with msf_client, rate_limiter, config

Returns:

  • (MCP::Tool::Response) —

    Structured response with credential information



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# File 'lib/msf/core/mcp/tools/credential_info.rb', line 91

def call(workspace: 'default', limit: Msf::MCP::Security::InputValidator::LIMIT_DEFAULT, offset: 0, server_context:)
  start_time = Time.now

  # Extract dependencies from server context
  msf_client = server_context[:msf_client]
  rate_limiter = server_context[:rate_limiter]

  # Check rate limit
  rate_limiter.check_rate_limit!('credential_info')

  # Validate inputs
  Msf::MCP::Security::InputValidator.validate_pagination!(limit, offset)

  # Call Metasploit API
  # Note that `workspace` is optional in the MSF API, the default workspace is used if not provided.
  # The default value is sent anyway for clarity.
  options = { workspace: workspace }
  raw_creds = msf_client.db_creds(options)

  # Transform response
  transformed = Metasploit::ResponseTransformer.transform_creds(raw_creds)

  # Apply pagination
  #
  # Note that to get the total number of entries, we gather the entire data set and apply pagination here
  # instead of sending the limit and offset to the API call to be processed by MSF.
  # This is needed to provide accurate total_items count in the metadata.
  total_items = transformed.size
  paginated_data = transformed[offset, limit] || []

  # Build metadata
  metadata = {
    workspace: workspace,
    query_time: (Time.now - start_time).round(3),
    total_items: total_items,
    returned_items: paginated_data.size,
    limit: limit,
    offset: offset
  }

  # Return MCP response
  ::MCP::Tool::Response.new(
    [
      {
        type: 'text',
        text: JSON.generate(
          metadata: metadata,
          data: paginated_data
        )
      }
    ],
    structured_content: {
      metadata: metadata,
      data: paginated_data
    }
  )
rescue Msf::MCP::Security::RateLimitExceededError => e
  tool_error_response("Rate limit exceeded: #{e.message}")
rescue Msf::MCP::Metasploit::AuthenticationError => e
  tool_error_response("Authentication failed: #{e.message}")
rescue Msf::MCP::Metasploit::APIError => e
  tool_error_response("Metasploit API error: #{e.message}")
rescue Msf::MCP::Security::ValidationError => e
  tool_error_response(e.message)
end