Empire/lib/modules/powershell_template.py

119 lines
4.0 KiB
Python

from lib.common import helpers
class Module:
def __init__(self, mainMenu, params=[]):
# metadata info about the module, not modified during runtime
self.info = {
# name for the module that will appear in module menus
'Name': 'Invoke-Something',
# list of one or more authors for the module
'Author': ['@yourname'],
# more verbose multi-line description of the module
'Description': ('description line 1'
'description line 2'),
# True if the module needs to run in the background
'Background' : False,
# File extension to save the file as
'OutputExtension' : None,
# True if the module needs admin rights to run
'NeedsAdmin' : False,
# True if the method doesn't touch disk/is reasonably opsec safe
'OpsecSafe' : True,
# the language for this module
'Language' : 'powershell',
# The minimum PowerShell version needed for the module to run
'MinLanguageVersion' : '2',
# list of any references/other comments
'Comments': [
'comment',
'http://link/'
]
}
# any options needed by the module, settable during runtime
self.options = {
# format:
# value_name : {description, required, default_value}
'Agent' : {
# The 'Agent' option is the only one that MUST be in a module
'Description' : 'Agent to grab a screenshot from.',
'Required' : True,
'Value' : ''
},
'Command' : {
'Description' : 'Command to execute',
'Required' : True,
'Value' : 'test'
}
}
# save off a copy of the mainMenu object to access external functionality
# like listeners/agent handlers/etc.
self.mainMenu = mainMenu
# During instantiation, any settable option parameters
# are passed as an object set to the module and the
# options dictionary is automatically set. This is mostly
# in case options are passed on the command line
if params:
for param in params:
# parameter format is [Name, Value]
option, value = param
if option in self.options:
self.options[option]['Value'] = value
def generate(self):
# the PowerShell script itself, with the command to invoke
# for execution appended to the end. Scripts should output
# everything to the pipeline for proper parsing.
#
# the script should be stripped of comments, with a link to any
# original reference script included in the comments.
script = """
function Invoke-Something {
}
Invoke-Something"""
# if you're reading in a large, external script that might be updates,
# use the pattern below
# read in the common module source code
moduleSource = self.mainMenu.installPath + "/data/module_source/..."
try:
f = open(moduleSource, 'r')
except:
print helpers.color("[!] Could not read module source path at: " + str(moduleSource))
return ""
moduleCode = f.read()
f.close()
script = moduleCode
# add any arguments to the end execution of the script
for option,values in self.options.iteritems():
if option.lower() != "agent":
if values['Value'] and values['Value'] != '':
if values['Value'].lower() == "true":
# if we're just adding a switch
script += " -" + str(option)
else:
script += " -" + str(option) + " " + str(values['Value'])
return script