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rapid7/metasploit-framework

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modules/exploits/windows/local/ps_persist.rb

Summary

Maintainability
C
7 hrs
Test Coverage

Method initialize has 62 lines of code (exceeds 25 allowed). Consider refactoring.
Open

  def initialize(info = {})
    super(
      update_info(
        info,
        'Name' => "Powershell Payload Execution",
Severity: Major
Found in modules/exploits/windows/local/ps_persist.rb - About 2 hrs to fix

    Method exploit has a Cognitive Complexity of 16 (exceeds 5 allowed). Consider refactoring.
    Open

      def exploit
    # Make sure we meet the requirements before running the script
    if !(session.type == "meterpreter" || have_powershell?)
      print_error("Incompatible Environment")
      return
    Severity: Minor
    Found in modules/exploits/windows/local/ps_persist.rb - About 2 hrs to fix

    Cognitive Complexity

    Cognitive Complexity is a measure of how difficult a unit of code is to intuitively understand. Unlike Cyclomatic Complexity, which determines how difficult your code will be to test, Cognitive Complexity tells you how difficult your code will be to read and comprehend.

    A method's cognitive complexity is based on a few simple rules:

    • Code is not considered more complex when it uses shorthand that the language provides for collapsing multiple statements into one
    • Code is considered more complex for each "break in the linear flow of the code"
    • Code is considered more complex when "flow breaking structures are nested"

    Further reading

    Method exploit has 52 lines of code (exceeds 25 allowed). Consider refactoring.
    Open

      def exploit
    # Make sure we meet the requirements before running the script
    if !(session.type == "meterpreter" || have_powershell?)
      print_error("Incompatible Environment")
      return
    Severity: Major
    Found in modules/exploits/windows/local/ps_persist.rb - About 2 hrs to fix

      Avoid too many return statements within this method.
      Open

            return
      Severity: Major
      Found in modules/exploits/windows/local/ps_persist.rb - About 30 mins to fix

        Similar blocks of code found in 2 locations. Consider refactoring.
        Open

              size = session.fs.file.stat(com_opts[:target].gsub('\\', '\\\\')).size
      vprint_good("File #{com_opts[:target].gsub('\\', '\\\\')} found, #{size}kb")
        Severity: Minor
        Found in modules/exploits/windows/local/ps_persist.rb and 1 other location - About 15 mins to fix
        modules/post/windows/manage/powershell/build_net_code.rb on lines 109..110

        Duplicated Code

        Duplicated code can lead to software that is hard to understand and difficult to change. The Don't Repeat Yourself (DRY) principle states:

        Every piece of knowledge must have a single, unambiguous, authoritative representation within a system.

        When you violate DRY, bugs and maintenance problems are sure to follow. Duplicated code has a tendency to both continue to replicate and also to diverge (leaving bugs as two similar implementations differ in subtle ways).

        Tuning

        This issue has a mass of 26.

        We set useful threshold defaults for the languages we support but you may want to adjust these settings based on your project guidelines.

        The threshold configuration represents the minimum mass a code block must have to be analyzed for duplication. The lower the threshold, the more fine-grained the comparison.

        If the engine is too easily reporting duplication, try raising the threshold. If you suspect that the engine isn't catching enough duplication, try lowering the threshold. The best setting tends to differ from language to language.

        See codeclimate-duplication's documentation for more information about tuning the mass threshold in your .codeclimate.yml.

        Refactorings

        Further Reading

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