def activate(self, ctx):
hx_view = idaapi.get_widget_vdui(ctx.widget)
if not self.check(hx_view):
return
data = []
offset = hx_view.item.e.m
struct_type = idaapi.remove_pointer(hx_view.item.e.x.type)
ordinal = helper.get_ordinal(struct_type)
result = struct_xrefs.XrefStorage().get_structure_info(ordinal, offset)
for xref_info in result:
data.append([
idaapi.get_short_name(xref_info.func_ea) + "+" + hex(int(xref_info.offset)),
xref_info.type,
xref_info.line
])
field_name = helper.get_member_name(struct_type, offset)
chooser = forms.MyChoose(
data,
"Cross-references to {0}::{1}".format(struct_type.dstr(), field_name),
[["Function", 20 | idaapi.CHCOL_PLAIN],
["Type", 2 | idaapi.CHCOL_PLAIN],
["Line", 40 | idaapi.CHCOL_PLAIN]]
)
idx = chooser.Show(True)
if idx == -1:
return
xref = result[idx]
idaapi.open_pseudocode(xref.func_ea + xref.offset, False)
def create(cfunc, arg):
# Creates object suitable for scaning either from cexpr_t or ctree_item_t
if isinstance(arg, idaapi.ctree_item_t):
lvar = arg.get_lvar()
if lvar:
index = list(cfunc.get_lvars()).index(lvar)
result = VariableObject(lvar, index)
if arg.e:
result.ea = ScanObject.get_expression_address(cfunc, arg.e)
return result
cexpr = arg.e
else:
cexpr = arg
if cexpr.op == idaapi.cot_var:
lvar = cfunc.get_lvars()[cexpr.v.idx]
result = VariableObject(lvar, cexpr.v.idx)
result.ea = ScanObject.get_expression_address(cfunc, cexpr)
return result
elif cexpr.op == idaapi.cot_memptr:
t = cexpr.x.type.get_pointed_object()
result = StructPtrObject(t.dstr(), cexpr.m)
result.name = get_member_name(t, cexpr.m)
elif cexpr.op == idaapi.cot_memref:
t = cexpr.x.type
result = StructRefObject(t.dstr(), cexpr.m)
result.name = get_member_name(t, cexpr.m)
elif cexpr.op == idaapi.cot_obj:
result = GlobalVariableObject(cexpr.obj_ea)
result.name = idaapi.get_short_name(cexpr.obj_ea)
else:
return
result.tinfo = cexpr.type
result.ea = ScanObject.get_expression_address(cfunc, cexpr)
return result
def _name_changed(self, address, new_name, local_name):
"""
Handler for rename event in IDA.
"""
# we should never care about local renames (eg, loc_40804b), ignore
if local_name or new_name.startswith("loc_"):
return 0
# get the function that this address falls within
function = self.get_function(address)
# if the address does not fall within a function (might happen?), ignore
if not function:
return 0
#
# ensure the renamed address matches the function start before
# renaming the function in our metadata cache.
#
# I am not sure when this would not be the case (globals? maybe)
# but I'd rather not find out.
#
if address == function.address:
logger.debug("Name changing @ 0x%X" % address)
logger.debug(" Old name: %s" % function.name)
function.name = idaapi.get_short_name(address)
logger.debug(" New name: %s" % function.name)
# notify any listeners that a function rename occurred
self._notify_function_renamed()
# necessary for IDP/IDB_Hooks
return 0
def parse_vtable_name(address):
name = idaapi.get_short_name(address)
if idaapi.is_valid_typename(name):
if name[0:3] == 'off':
# off_XXXXXXXX case
return "Vtable" + name[3:], False
else:
# Attempt to make nice and valid name from demangled RTTI name
try:
name = re.sub("^const ", "", name)
sliced_names = name.split("::")
name, for_part = "_for_".join(sliced_names[:-1]), sliced_names[-1]
print name, for_part
templates = re.search("<(.*)>", name)
if templates:
templates = templates.group(1)
name = re.sub("<.*>", "", name)
templates = re.sub("[^a-zA-Z0-9_*]", "_", templates)
templates = re.sub("\*", "PTR", templates)
name += '_' + templates
for_part = re.search("\{for `(.*)'\}", for_part)
if for_part:
for_part = for_part.group(1)
name += '_' + for_part
return 'Vtable_' + name, True
except (AttributeError, IndexError):
print "[Warning] Unable to parse virtual table name - "
return "Vtable_{0:X}".format(address), False
def add_item(self, function_match):
imagebase = idaapi.get_imagebase()
self_address = imagebase + function_match[self.self_name]
counts = self.count_blocks(function_match)
root = self.model.invisibleRootItem()
columns = [
QtGui.QStandardItem(idaapi.get_short_name(self_address)),
QtGui.QStandardItem('%.8x' % self_address),
QtGui.QStandardItem(function_match[self.peer_name + '_name']),
QtGui.QStandardItem('%.8x' % function_match[self.peer_name]),
QtGui.QStandardItem('%d' % counts['matched_block_counts']),
QtGui.QStandardItem('%d' %
counts['self_unidentified_block_counts']),
QtGui.QStandardItem('%d' %
counts['peer_unidentified_block_counts'])
]
root.appendRow(columns)
class Item:
def __init__(self, **kwargs):
self.__dict__.update(kwargs)
item_data = Item(function_match=function_match,
self_name=self.self_name,
peer_name=self.peer_name,
peer_md5=self.peer_md5,
queue=self.queue)
for column_item in columns:
column_item.setData(item_data, QtCore.Qt.UserRole)
def __init__(self, offset, address, scanned_variable=None, origin=0):
AbstractMember.__init__(self, offset + origin, scanned_variable,
origin)
self.address = address
self.virtual_functions = []
self.name = "vtable" + ("_{0:X}".format(self.offset)
if self.offset else '')
self.vtable_name, self.have_nice_name = parse_vtable_name(
idaapi.get_short_name(address))
self.populate()
def name(self):
name = idaapi.get_short_name(self.address)
name = name.split('(')[0]
result = re.search(r"(\[thunk\]:)?([^`]*)(.*\{(\d+)}.*)?", name)
name, adjuster = result.group(2), result.group(4)
if adjuster:
name += "_adj_" + adjuster
name = name.translate(None, "`'").replace(' ', '_')
name = re.sub(r'[<>]', '_t_', name)
return name
def renamed(self, address, new_name, local_name):
"""
Capture all IDA rename events.
"""
# we should never care about local renames (eg, loc_40804b), ignore
if local_name or new_name.startswith("loc_"):
return 0
rendered_name = idaapi.get_short_name(address)
# call the 'renamed' callback, that will get hooked by a listener
self.name_changed(address, rendered_name)
# must return 0 to keep IDA happy...
return 0
def apply_type(self, tinfo):
""" Finally apply Class'es tinfo to this variable """
if self.applicable:
hx_view = idaapi.open_pseudocode(self.function.entry_ea, -1)
if hx_view:
print "[Info] Applying tinfo to variable {0} in function {1}".format(
self.lvar.name,
idaapi.get_short_name(self.function.entry_ea))
# Finding lvar of new window that have the same name that saved one and applying tinfo_t
lvar = filter(lambda x: x == self.lvar,
hx_view.cfunc.get_lvars())
if lvar:
print "+++++++++++"
hx_view.set_lvar_type(lvar[0], tinfo)
else:
print "-----------"
def scan_function(self, ea, offset, arg_index):
# Function for recursive search structure's members
if (ea, arg_index, self.origin + offset) in scanned_functions:
return
try:
scanned_functions.add((ea, arg_index, self.origin + offset))
new_function = idaapi.decompile(ea)
if new_function:
print "[Info] Scanning function {name} at 0x{ea:08X}, origin: 0x{origin:04X}".format(
name=idaapi.get_short_name(ea), ea=ea, origin=self.origin + offset
)
scanner = DeepSearchVisitor(new_function, self.origin + offset, arg_index)
scanner.apply_to(new_function.body, None)
self.candidates.extend(scanner.candidates)
except idaapi.DecompilationFailure:
print "[ERROR] Ida failed to decompile function"
def create(cfunc, cexpr):
if cexpr.op == idaapi.cot_call:
e = cexpr
elif cexpr.op == idaapi.cot_cast and cexpr.x.op == idaapi.cot_call:
e = cexpr.x
else:
return
func_name = idaapi.get_short_name(e.x.obj_ea)
if "malloc" in func_name or "operator new" in func_name:
carg = e.a[0]
if carg.op == idaapi.cot_num:
size = carg.numval()
else:
size = 0
result = MemoryAllocationObject(func_name, size)
result.ea = ScanObject.get_expression_address(cfunc, e)
return result
def _manipulate(self, cexpr, obj):
if self.crippled:
logger.debug("Skipping crippled function at {}".format(
helper.to_hex(self._cfunc.entry_ea)))
return
if obj.id == api.SO_GLOBAL_OBJECT:
old_name = idaapi.get_short_name(cexpr.obj_ea)
if settings.PROPAGATE_THROUGH_ALL_NAMES or _is_default_name(
old_name):
new_name = self.__rename_with_prefix(
lambda x: idaapi.set_name(cexpr.obj_ea, x),
self.__propagated_name)
logger.debug("Renamed global variable from {} to {}".format(
old_name, new_name))
elif obj.id == api.SO_LOCAL_VARIABLE:
lvar = self._cfunc.get_lvars()[cexpr.v.idx]
old_name = lvar.name
if settings.PROPAGATE_THROUGH_ALL_NAMES or _is_default_name(
old_name):
new_name = self.__rename_with_prefix(
lambda x: self.__hx_view.rename_lvar(lvar, x, True),
self.__propagated_name)
logger.debug("Renamed local variable from {} to {}".format(
old_name, new_name))
elif obj.id in (api.SO_STRUCT_POINTER, api.SO_STRUCT_REFERENCE):
struct_tinfo = cexpr.x.type
offset = cexpr.m
struct_tinfo.remove_ptr_or_array()
old_name = helper.get_member_name(struct_tinfo, offset)
if settings.PROPAGATE_THROUGH_ALL_NAMES or _is_default_name(
old_name):
new_name = self.__rename_with_prefix(
lambda x: helper.change_member_name(
struct_tinfo.dstr(), offset, x),
self.__propagated_name)
logger.debug("Renamed struct member from {} to {}".format(
old_name, new_name))
def function_name(self):
return idaapi.get_short_name(self.func_ea)
def name(self):
name = idaapi.get_short_name(self.address)
name = name.split('(')[0]
name = name.replace("`", '').replace(" ", '_').replace("'", '')
return name
def get_function_name_at(self, address):
return idaapi.get_short_name(address)
def _refresh_name(self):
"""
Refresh the function name against the open database.
"""
self.name = idaapi.get_short_name(self.address)
