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68 lines (55 loc) · 1.89 KB
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DelphiClass_DynamicTable.py
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68 lines (55 loc) · 1.89 KB
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#
# This module allows to parse Delphi's DynamicTable
#
# Copyright (c) 2020-2025 ESET
# Author: Juraj Horňák <juraj.hornak@eset.com>
# See LICENSE file for redistribution.
import ida_bytes
from DelphiHelper.util.ida import *
class DynamicTable(object):
def __init__(
self,
classInfo: dict[str, str | dict[str, int]]) -> None:
self.__tableAddr = classInfo["Address"]["DynamicTable"]
self.__tableName = classInfo["Name"]
self.__processorWordSize = GetProcessorWordSize()
if self.__tableAddr != 0:
self.__numOfEntries = Word(self.__tableAddr)
def GetTableAddress(self) -> int:
return self.__tableAddr
def MakeTable(self) -> None:
if self.__tableAddr != 0:
self.__DeleteTable()
self.__CreateTable()
def __CreateTable(self) -> None:
MakeWord(self.__tableAddr)
MakeName(self.__tableAddr, self.__tableName + "_DynamicTable")
for i in range(self.__numOfEntries):
MakeWord(self.__tableAddr + 2 + 2 * i)
for i in range(self.__numOfEntries):
addr = (self.__tableAddr
+ 2
+ 2 * self.__numOfEntries
+ self.__processorWordSize * i)
MakeCustomWord(addr, self.__processorWordSize)
ida_bytes.set_cmt(
self.__tableAddr,
"Count",
0
)
ida_bytes.set_cmt(
self.__tableAddr + 2,
"Method/Message handler number",
0
)
ida_bytes.set_cmt(
self.__tableAddr + 2 + 2 * self.__numOfEntries,
"Method/Message handler pointer",
0
)
def __DeleteTable(self) -> None:
ida_bytes.del_items(
self.__tableAddr,
ida_bytes.DELIT_DELNAMES,
self.__numOfEntries * (2 + self.__processorWordSize) + 2
)