Adapted symbol code & samples for py3 compat

This commit is contained in:
hakril
2020-05-18 23:07:33 +02:00
parent 2e48f9008a
commit e4c0f8645e
5 changed files with 154 additions and 4 deletions
+118
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@@ -0,0 +1,118 @@
import sys
import os.path
import pprint
import argparse
sys.path.append(os.path.abspath(__file__ + "\..\.."))
import windows
import windows.debug
import windows.generated_def as gdef
class FollowNtCreateFile(windows.debug.FunctionBP):
TARGET = windows.winproxy.NtCreateFile
def trigger(self, dbg, exc):
params = self.extract_arguments(dbg.current_process, dbg.current_thread)
filename = params["ObjectAttributes"].contents.ObjectName.contents.str
handle_addr = params["FileHandle"].value
self.data = (filename, handle_addr)
self.break_on_ret(dbg, exc)
def ret_trigger(self, dbg, exc):
filename, handle_addr = self.data
ret_value = dbg.current_thread.context.func_result # EAX / RAX depending of bitness
if ret_value:
return # Creation failed
handle_value = dbg.current_process.read_ptr(handle_addr)
return dbg.on_file_create(filename, handle_value)
class FollowReadFile(windows.debug.FunctionBP):
TARGET = windows.winproxy.ReadFile
def trigger(self, dbg, exc):
params = self.extract_arguments(dbg.current_process, dbg.current_thread)
self.data = params
if params["hFile"] in dbg.followed_handles:
self.break_on_ret(dbg, exc)
def ret_trigger(self, dbg, exc):
params = self.data
ret_value = dbg.current_thread.context.func_result
if not ret_value: # Read failed
return
buffer_size = dbg.current_process.read_dword(params["lpNumberOfBytesRead"])
read_data = dbg.current_process.read_memory(params["lpBuffer"], buffer_size)
return dbg.on_file_read(params["hFile"], read_data)
class FollowWriteFile(windows.debug.FunctionBP):
TARGET = windows.winproxy.WriteFile
def trigger(self, dbg, exc):
params = self.extract_arguments(dbg.current_process, dbg.current_thread)
write_data = dbg.current_process.read_memory(params["lpBuffer"], params["nNumberOfBytesToWrite"])
return dbg.on_file_write(params["hFile"], write_data)
class FollowCloseFile(windows.debug.FunctionBP):
TARGET = windows.winproxy.CloseHandle
def trigger(self, dbg, exc):
params = self.extract_arguments(dbg.current_process, dbg.current_thread)
return dbg.on_file_close(params["hObject"])
class FileFollowDebugger(windows.debug.Debugger):
def __init__(self, target, filenames):
super(FileFollowDebugger, self).__init__(target)
self.filenames = filenames
self.followed_handles = {}
self.add_bp(FollowNtCreateFile())
self.add_bp(FollowReadFile())
self.add_bp(FollowWriteFile())
self.add_bp(FollowCloseFile())
def on_exception(self, exc):
if exc.ExceptionRecord.ExceptionCode == gdef.EXCEPTION_BREAKPOINT:
return gdef.DBG_CONTINUE
return gdef.DBG_EXCEPTION_NOT_HANDLED
def on_file_create(self, filename, handle):
if any(filename.lower().endswith(fname) for fname in self.filenames):
self.followed_handles[handle] = filename
print("Opened <{0}> as handle <{1:#x}>".format(filename, handle))
def on_file_read(self, handle, data):
filename = self.followed_handles[handle]
print("Read from <{0}> ({1:#x})".format(filename, handle))
print(repr(data))
def on_file_write(self, handle, data):
filename = self.followed_handles[handle]
print("Write to <{0}> ({1:#x})".format(filename, handle))
print(repr(data))
def on_file_close(self, handle):
try:
filename = self.followed_handles[handle]
except KeyError as e:
return
print("Closing handle <{0:#x}> to <{1}>".format(handle, filename))
del self.followed_handles[handle]
if __name__ == "__main__":
parser = argparse.ArgumentParser(prog=__file__)
parser.add_argument('exe')
parser.add_argument('--cmdline', default="")
parser.add_argument('files', nargs="+")
args = parser.parse_args()
print(args)
target = windows.utils.create_process(args.exe, args.cmdline.split(), dwCreationFlags=gdef.DEBUG_PROCESS, show_windows=True)
dbg = FileFollowDebugger(target, args.files)
dbg.loop()
print("BYE")
+1 -1
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@@ -30,7 +30,7 @@ class MyInfoBP(windows.debug.Breakpoint):
dbg.current_process.exit()
print("")
dbg = windows.debug.SymbolDebugger.debug(r"c:\windows\system32\notepad.exe")
dbg = windows.debug.SymbolDebugger.debug(b"c:\\windows\\system32\\notepad.exe")
dbg.add_bp(MyInfoBP("kernelbase!CreateFileInternal+2"))
dbg.add_bp(MyInfoBP("ntdll!LdrpInitializeProcess"))
dbg.loop()
+30
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@@ -0,0 +1,30 @@
import windows
import windows.generated_def as gdef
print("Listing the first 3 services:")
for service in windows.system.services[:3]:
print(" * {0}".format(service))
print("")
TARGET_SERVICE = "TapiSrv"
print("Retriving service <{0}>".format(TARGET_SERVICE))
service = windows.system.services[TARGET_SERVICE]
print("{0}".format(service))
print(" - name: {0!r}".format(service.name))
print(" - description: {0!r}".format(service.description))
print(" - state: {0!r}".format(service.status.state))
print(" - type: {0!r}".format(service.status.type))
print(" - process: {0!r}".format(service.process))
print(" - security-description: {0}".format(service.security_descriptor))
if service.status.state == gdef.SERVICE_RUNNING:
print("Service already running, not trying to start it")
else:
print("Trying to start the service")
service.start()
while service.status.state != gdef.SERVICE_RUNNING:
pass
print("Service started !")
print("{0}".format(service))
print(" - state: {0!r}".format(service.status.state))
print(" - process: {0!r}".format(service.process))
+3 -2
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@@ -296,7 +296,7 @@ class SymbolModule(gdef.IMAGEHLP_MODULE64):
return LoadedPdbName
def __repr__(self):
pdb_basename = self.LoadedPdbName.split("\\")[-1]
pdb_basename = self.LoadedPdbName.split(b"\\")[-1]
return '<{0} name="{1}" type={2} pdb="{3}" addr={4:#x}>'.format(type(self).__name__, self.name, self.type.value.name, pdb_basename, self.addr)
@@ -483,7 +483,8 @@ class SymbolHandler(object):
callback = ctypes.WINFUNCTYPE(gdef.BOOL, ctypes.POINTER(SymbolInfo), gdef.ULONG , ctypes.py_object)(callback)
addr = getattr(mod, "addr", mod) # Retrieve mod.addr, else us the value directly
# Expect A-string
mask = windows.pycompat.raw_encode(mask)
windows.winproxy.SymSearch(self.handle, gdef.DWORD64(addr), 0, tag, mask, 0, callback, res, options)
for sym in res:
sym.resolver = self
+2 -1
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@@ -1,5 +1,6 @@
import ctypes
import windows.generated_def as gdef
from windows.pycompat import int_types
from ..apiproxy import ApiProxy, NeededParameter
from ..error import fail_on_zero
@@ -14,7 +15,7 @@ class DbgHelpProxy(ApiProxy):
# !! this code loose a ref to obj.
# Should still work as our calling-caller method keep a ref
def transform_pyobject_to_pvoid(obj):
if obj is None or isinstance(obj, (int, long)):
if obj is None or isinstance(obj, int_types):
return obj
return ctypes.POINTER(gdef.PVOID)(ctypes.py_object(obj))[0]