import ctypes
import msvcrt
import os
import sys
import code
import datetime
from collections import namedtuple
import windows
from windows.dbgprint import dbgprint
from .. import winproxy
from ..generated_def import windef
from ..generated_def.winstructs import *
# Function resolution !
# should be in winproxy ?
def get_func_addr(dll_name, func_name):
# Load the DLL
ctypes.WinDLL(dll_name)
modules = windows.current_process.peb.modules
if not dll_name.lower().endswith(".dll"):
dll_name += ".dll"
mod = [x for x in modules if x.name == dll_name][0]
return mod.pe.exports[func_name]
def get_remote_func_addr(target, dll_name, func_name):
name_modules = [m for m in target.peb.modules if m.name == dll_name]
if not len(name_modules):
raise ValueError("Module <{0}> not loaded in target <{1}>".format(dll_name, target))
mod = name_modules[0]
return mod.pe.exports[func_name]
def is_wow_64(hProcess):
try:
fnIsWow64Process = get_func_addr("kernel32.dll", "IsWow64Process")
except winproxy.Kernel32Error:
return False
IsWow64Process = ctypes.WINFUNCTYPE(BOOL, HANDLE, ctypes.POINTER(BOOL))(fnIsWow64Process)
Wow64Process = BOOL()
res = IsWow64Process(hProcess, ctypes.byref(Wow64Process))
if res:
return bool(Wow64Process)
raise ctypes.WinError()
[docs]def create_file_from_handle(handle, mode="r"):
"""Return a Python :class:`file` around a ``Windows`` HANDLE"""
fd = msvcrt.open_osfhandle(handle, os.O_TEXT)
return os.fdopen(fd, mode, 0)
[docs]def get_handle_from_file(f):
"""Get the ``Windows`` HANDLE of a python :class:`file`"""
return msvcrt.get_osfhandle(f.fileno())
[docs]def create_console():
"""Create a new console displaying STDOUT.
Useful in injection of GUI process"""
winproxy.AllocConsole()
stdout_handle = winproxy.GetStdHandle(windef.STD_OUTPUT_HANDLE)
console_stdout = create_file_from_handle(stdout_handle, "w")
sys.stdout = console_stdout
stdin_handle = winproxy.GetStdHandle(windef.STD_INPUT_HANDLE)
console_stdin = create_file_from_handle(stdin_handle, "r+")
sys.stdin = console_stdin
stderr_handle = winproxy.GetStdHandle(windef.STD_ERROR_HANDLE)
console_stderr = create_file_from_handle(stderr_handle, "w")
sys.stderr = console_stderr
[docs]def create_process(path, args=None, dwCreationFlags=0, show_windows=True):
"""A convenient wrapper arround :func:`windows.winproxy.CreateProcessA`"""
proc_info = PROCESS_INFORMATION()
lpStartupInfo = None
if show_windows:
StartupInfo = STARTUPINFOA()
StartupInfo.cb = ctypes.sizeof(StartupInfo)
StartupInfo.dwFlags = 0
lpStartupInfo = ctypes.byref(StartupInfo)
lpCommandLine = None
if args:
lpCommandLine = (" ".join([str(a) for a in args]))
windows.winproxy.CreateProcessA(path, lpCommandLine=lpCommandLine, dwCreationFlags=dwCreationFlags, lpProcessInformation=ctypes.byref(proc_info), lpStartupInfo=lpStartupInfo)
dbgprint("CreateProcessA new process handle {:#x}".format(proc_info.hProcess), "HANDLE")
dbgprint("CreateProcessA new thread handle {:#x}".format(proc_info.hThread), "HANDLE")
dbgprint("Automatic close of thread handle {:#x}".format(proc_info.hThread), "HANDLE")
windows.winproxy.CloseHandle(proc_info.hThread) # Give access to a WinThread in addition of the WinProcess ?
return windows.winobject.process.WinProcess(pid=proc_info.dwProcessId, handle=proc_info.hProcess)
def lookup_privilege_value(privilege_name):
luid = LUID()
winproxy.LookupPrivilegeValueA(None, privilege_name, byref(luid))
return luid
def lookup_privilege_name(privilege_value):
if isinstance(privilege_value, tuple):
luid = LUID(privilege_value[1], privilege_value[0])
privilege_value = luid
size = DWORD(0x100)
buff = ctypes.c_buffer(size.value)
winproxy.LookupPrivilegeNameA(None, privilege_value, buff, size)
return buff[:size.value]
[docs]def enable_privilege(lpszPrivilege, bEnablePrivilege):
"""
Enable or disable a privilege::
enable_privilege(SE_DEBUG_NAME, True)
"""
tp = TOKEN_PRIVILEGES()
luid = LUID()
hToken = HANDLE()
winproxy.OpenProcessToken(winproxy.GetCurrentProcess(), TOKEN_ALL_ACCESS, byref(hToken))
winproxy.LookupPrivilegeValueA(None, lpszPrivilege, byref(luid))
tp.PrivilegeCount = 1
tp.Privileges[0].Luid = luid
if bEnablePrivilege:
tp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED
else:
tp.Privileges[0].Attributes = 0
winproxy.AdjustTokenPrivileges(hToken, False, byref(tp), sizeof(TOKEN_PRIVILEGES))
winproxy.CloseHandle(hToken)
if winproxy.GetLastError() == windef.ERROR_NOT_ALL_ASSIGNED:
raise ValueError("Failed to get privilege {0}".format(lpszPrivilege))
return True
[docs]def check_is_elevated():
"""Return ``True`` if process is Admin"""
hToken = HANDLE()
elevation = TOKEN_ELEVATION()
cbsize = DWORD()
winproxy.OpenProcessToken(winproxy.GetCurrentProcess(), TOKEN_ALL_ACCESS, byref(hToken))
winproxy.GetTokenInformation(hToken, TokenElevation, byref(elevation), sizeof(elevation), byref(cbsize))
winproxy.CloseHandle(hToken)
return elevation.TokenIsElevated
[docs]def check_debug():
"""Check that kernel is in debug mode (beware of NOUMEX):
https://msdn.microsoft.com/en-us/library/windows/hardware/ff556253(v=vs.85).aspx#_______noumex______
"""
hkresult = HKEY()
cbsize = DWORD(1024)
bufferres = (c_char * cbsize.value)()
winproxy.RegOpenKeyExA(HKEY_LOCAL_MACHINE, "System\\CurrentControlSet\\Control", 0, KEY_READ, byref(hkresult))
winproxy.RegGetValueA(hkresult, None, "SystemStartOptions", RRF_RT_REG_SZ, None, byref(bufferres), byref(cbsize))
winproxy.RegCloseKey(hkresult)
control = bufferres[:]
if "DEBUG" not in control:
# print "[-] Enable debug boot!"
# print "> bcdedit /debug on"
return False
if "DEBUG=NOUMEX" not in control:
pass
# print "[*] Warning noumex not set!"
# print "> bcdedit /set noumex on"
return True
def datetime_from_filetime(filetime):
"""return a :class:`datetime.datetime` from a ``windows`` FILETIME int"""
return datetime.datetime(1601,1,1) + datetime.timedelta(microseconds=filetime / 10)
def filetime_from_datetime(dtime):
"""Return the FILETIME value from a :class:`datetime.datetime` in a python :class:`int`"""
return int((dtime - datetime.datetime(1601,1,1)).total_seconds() * 1000) * 10000
class FixedInteractiveConsole(code.InteractiveConsole):
def raw_input(self, prompt=">>>"):
sys.stdout.write(prompt)
return raw_input("")
[docs]def pop_shell(locs=None):
"""Pop a console with an InterativeConsole"""
if locs is None:
locs = globals()
create_console()
FixedInteractiveConsole(locs).interact()
def get_kernel_modules():
if windows.current_process.is_wow_64:
return get_kernel_modules_syswow64()
cbsize = DWORD()
winproxy.NtQuerySystemInformation(SystemModuleInformation, None, 0, byref(cbsize))
raw_buffer = (cbsize.value * c_char)()
buffer = SYSTEM_MODULE_INFORMATION.from_address(ctypes.addressof(raw_buffer))
winproxy.NtQuerySystemInformation(SystemModuleInformation, byref(raw_buffer), sizeof(raw_buffer), byref(cbsize))
modules = (SYSTEM_MODULE * buffer.ModulesCount).from_address(addressof(buffer) + SYSTEM_MODULE_INFORMATION.Modules.offset)
return list(modules)
def get_kernel_modules_syswow64():
cbsize = DWORD()
windows.syswow64.NtQuerySystemInformation_32_to_64(SystemModuleInformation, None, 0, ctypes.addressof(cbsize))
raw_buffer = (cbsize.value * c_char)()
buffer = SYSTEM_MODULE_INFORMATION64.from_address(ctypes.addressof(raw_buffer))
windows.syswow64.NtQuerySystemInformation_32_to_64(SystemModuleInformation, byref(raw_buffer), sizeof(raw_buffer), byref(cbsize))
modules = (SYSTEM_MODULE64 * buffer.ModulesCount).from_address(addressof(buffer) + SYSTEM_MODULE_INFORMATION64.Modules.offset)
return list(modules)
# String stuff
def ntstatus(code):
return windows.generated_def.ntstatus.NtStatusException(code)
def get_long_path(path):
"""Return the long path form for ``path``
:returns: :class:`str`
"""
size = 0x1000
buffer = ctypes.c_buffer(size)
rsize = winproxy.GetLongPathNameA(path, buffer, size)
return buffer[:rsize]
def get_short_path(path):
"""Return the short path form for ``path``
:returns: :class:`str`
"""
size = 0x1000
buffer = ctypes.c_buffer(size)
rsize = winproxy.GetShortPathNameA(path, buffer, size)
return buffer[:rsize]
def get_shared_mapping(name, size=0x1000):
# TODO: real code
h = windows.winproxy.CreateFileMappingA(INVALID_HANDLE_VALUE, dwMaximumSizeLow=size, lpName=name)
addr = windows.winproxy.MapViewOfFile(h, dwNumberOfBytesToMap=size)
return addr
#def mapfile(file):
# fhandle = get_handle_from_file(file)
# h = windows.winproxy.CreateFileMappingA(fhandle, None, PAGE_READONLY, 0, 1, None)
# addr = windows.winproxy.MapViewOfFile(h, dwDesiredAccess=FILE_MAP_READ, dwNumberOfBytesToMap=1)
# return addr
def decompress_buffer(comptype, buffer, uncompress_size=None):
if uncompress_size is None:
uncompress_size = len(buffer) * 10
result_size = DWORD()
uncompressed = ctypes.c_buffer(uncompress_size)
windows.winproxy.RtlDecompressBuffer(comptype, uncompressed, uncompress_size, buffer, len(buffer), result_size)
return uncompressed[:result_size.value]
# sid.py + real SID type ?
def get_known_sid(sid_type):
size = DWORD()
try:
windows.winproxy.CreateWellKnownSid(sid_type, None, None, size)
except WindowsError:
pass
buffer = ctypes.c_buffer(size.value)
windows.winproxy.CreateWellKnownSid(sid_type, None, buffer, size)
return ctypes.cast(buffer, PSID)
UnloadEventTraceInfo = namedtuple("UnloadEventTraceInfo", ["size", "nb_elt", "array_ptr"])
def get_unload_event_trace():
x = PULONG()
y = PULONG()
z = PVOID()
windows.winproxy.RtlGetUnloadEventTraceEx(x, y, z)
return UnloadEventTraceInfo(x[0], y[0], z.value)
[docs]class VirtualProtected(object):
"""
A context manager usable like `VirtualProtect` that will restore the old protection at exit ::
with utils.VirtualProtected(IATentry.addr, ctypes.sizeof(PVOID), windef.PAGE_EXECUTE_READWRITE):
IATentry.value = 0x42424242
"""
def __init__(self, addr, size, new_protect):
if (addr % 0x1000):
addr = addr - addr % 0x1000
self.addr = addr
self.size = size
self.new_protect = new_protect
def __enter__(self):
self.old_protect = DWORD()
winproxy.VirtualProtect(self.addr, self.size, self.new_protect, ctypes.byref(self.old_protect))
return self
def __exit__(self, exc_type, exc_value, traceback):
winproxy.VirtualProtect(self.addr, self.size, self.old_protect.value, ctypes.byref(self.old_protect))
return False
[docs]class DisableWow64FsRedirection(object):
"""
A context manager that disable the SysWow64 Filesystem Redirection ::
if is_process_32_bits:
def pop_calc_64():
with windows.utils.DisableWow64FsRedirection():
return windows.utils.create_process(r"C:\Windows\system32\calc.exe", True)
"""
def __enter__(self):
if windows.current_process.bitness == 64:
return self
self.OldValue = PVOID()
winproxy.Wow64DisableWow64FsRedirection(ctypes.byref(self.OldValue))
return self
def __exit__(self, exc_type, exc_value, traceback):
if windows.current_process.bitness == 64:
return False
winproxy.Wow64RevertWow64FsRedirection(self.OldValue)
return False