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windbglib.py
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"""
Copyright (c) 2011-2022, Peter Van Eeckhoutte - Corelan Consulting bv
All rights reserved.
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are met:
* Redistributions of source code must retain the above copyright
notice, this list of conditions and the following disclaimer.
* Redistributions in binary form must reproduce the above copyright
notice, this list of conditions and the following disclaimer in the
documentation and/or other materials provided with the distribution.
* Neither the name of Corelan nor the
names of its contributors may be used to endorse or promote products
derived from this software without specific prior written permission.
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
DISCLAIMED. IN NO EVENT SHALL PETER VAN EECKHOUTTE OR CORELAN GCV BE LIABLE FOR ANY
DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
$Revision: 151 $
$Id: windbglib.py 151 2022-10-31 18:04:00Z corelanc0d3r $
"""
__VERSION__ = '1.0'
#
# Wrapper library around pykd
# (partial immlib logic port)
#
# This library allows you to run mona.py
# under WinDBG, using the pykd extension
#
import pykd
import os
import binascii
import struct
import traceback
import pickle
import ctypes
import array
import re
global MemoryPages
global AsmCache
global OpcodeCache
global InstructionCache
global PageSections
global ModuleCache
global cpebaddress
global PEBModList
arch = 32
cpebaddress = 0
PageSections = {}
ModuleCache = {}
PEBModList = {}
Registers32BitsOrder = ["EAX", "ECX", "EDX", "EBX", "ESP", "EBP", "ESI", "EDI"]
Registers64BitsOrder = ["RAX", "RCX", "RDX", "RBX", "RSP", "RBP", "RSI", "RDI",
"R8", "R9", "R10", "R11", "R12", "R13", "R14", "R15"]
if pykd.is64bitSystem():
arch = 64
TOP_USERLAND = 0x7fffffff if arch == 32 else 0x7FFFFFFFFFFF
# Utility functions
def getOSVersion():
osversions = {}
osversions["5.0"] = "2000"
osversions["5.1"] = "xp"
osversions["5.2"] = "2003"
osversions["6.0"] = "vista"
osversions["6.1"] = "win7"
osversions["6.2"] = "win8"
osversions["6.3"] = "win8.1"
osversions["10.0"] = "win10"
peb = getPEBInfo()
majorversion = int(peb.OSMajorVersion)
minorversion = int(peb.OSMinorVersion)
thisversion = str(majorversion)+"." + str(minorversion)
if thisversion in osversions:
return osversions[thisversion]
else:
return "unknown"
def getArchitecture():
if not pykd.is64bitSystem():
return 32
else:
return 64
def getNtHeaders(modulebase):
# http://www.nirsoft.net/kernel_struct/vista/IMAGE_DOS_HEADER.html
# http://www.nirsoft.net/kernel_struct/vista/IMAGE_NT_HEADERS.html
if getArchitecture() == 64:
ntheaders = "_IMAGE_NT_HEADERS64"
else:
ntheaders = "_IMAGE_NT_HEADERS"
# modulebase + 0x3c = IMAGE_DOS_HEADER.e_lfanew
return pykd.module("ntdll").typedVar(ntheaders, modulebase + pykd.ptrDWord(modulebase + 0x3c))
def clearvars():
global MemoryPages
global AsmCache
global OpcodeCache
global InstructionCache
global PageSections
global ModuleCache
global cpebaddress
MemoryPages = None
AsmCache = None
OpcodeCache = None
InstructionCache = None
InstructionCache = None
PageSections = None
ModuleCache = None
cpebaddress = None
return
def getPEBInfo():
try:
return pykd.typedVar("ntdll!_PEB", pykd.getCurrentProcess())
except:
currversion = getPyKDVersion()
print("")
print(" Oops - It seems that PyKD was unable problem to get the PEB object.")
print(" This usually means that")
print(" 1. msdiaxxx.dll has not been registered correctly and/or")
print(" 2. symbols are missing for ntdll.dll")
print("")
print(" Possible solutions:")
print(" -------------------")
print(" 1. Re-register the VC runtime library:")
print(" * For PyKd v%s:" % currversion)
if currversion.startswith("0.2"):
print(" (Re)Install the x86 VC++ Redistributable Package for Visual Studio 2008")
print(" (https://www.microsoft.com/en-us/download/details.aspx?id=29)")
print(" Next, run the following command from an administrator prompt:")
print(" (x86) regsvr32.exe \"%ProgramFiles%\\Common Files\\microsoft shared\\VC\\msdia90.dll\"\n")
print(" (x64) regsvr32.exe \"%ProgramFiles(x86)%\\Common Files\\microsoft shared\\VC\\msdia90.dll\"\n")
else:
print(" Either install Visual Studio 2013, or get a copy of msdia120.dll and register it manually\n")
print(" You can find a copy of msdia120.dll inside the pykd.zip file inside the github repository")
print(" (Use at your own risk!). Place the file in the correct 'VC' folder and run regsvr32 from an administrative prompt:")
print(" (x86) regsvr32.exe \"%ProgramFiles%\\Common Files\\microsoft shared\\VC\\msdia120.dll\"\n")
print(" (x64) regsvr32.exe \"%ProgramFiles(x86)%\\Common Files\\microsoft shared\\VC\\msdia120.dll\"\n")
print(" 2. Force download of the Symbols for ntdll.dll")
print(" * Connect to the internet, and verify that the symbol path is configured correctly")
print(" Assuming that the local symbol path is set to c:\\symbols," )
print(" run the following command from within the windbg application folder")
print(" symchk /r c:\\windows\\system32\\ntdll.dll /s SRV*c:\\symbols*http://msdl.microsoft.com/download/symbols")
print("")
print(" Restart windbg and try again")
exit(1)
def getPEBAddress():
global cpebaddress
if cpebaddress == 0:
peb = getPEBInfo()
cpebaddress = peb.getAddress()
return cpebaddress
def getTEBInfo():
return pykd.typedVar("_TEB", pykd.getImplicitThread())
def getTEBAddress():
tebinfo = pykd.dbgCommand("!teb")
if len(tebinfo) > 0:
teblines = tebinfo.split("\n")
tebline = teblines[0]
tebparts = tebline.split(" ")
if len(tebparts) > 2:
return hexStrToInt(tebparts[-1])
# slow
teb = getTEBInfo()
return int(teb.Self)
def bin2hex(binbytes):
"""
Converts a binary string to a string of space-separated hexadecimal bytes.
"""
return ' '.join('%02x' % ord(c) for c in binbytes)
def hexptr2bin(hexptr):
"""
Input must be a int
output : bytes in little endian
"""
return struct.pack('<L',hexptr)
def hexStrToInt(inputstr):
"""
Converts a string with hex bytes to a numeric value
Arguments:
inputstr - A string representing the bytes to convert. Example : 41414141
Return:
the numeric value
"""
valtoreturn = 0
try:
valtoreturn = int(inputstr,16)
except:
valtoreturn = 0
return valtoreturn
def addrToInt(address):
"""
Convert a textual address to an integer
Arguments:
address - the address
Return:
int - the address value
"""
address = address.replace("\\x","").replace('`', '')
return hexStrToInt(address)
def isAddress(address):
"""
Check if a string is an address / consists of hex chars only
Arguments:
string - the string to check
Return:
Boolean - True if the address string only contains hex bytes
"""
address = address.replace("\\x","")
if len(address) > 16:
return False
return set(address.upper()) <= set("ABCDEF1234567890")
def intToHex(address):
if arch == 32:
return "0x%08x" % address
if arch == 64:
return "0x%016x" % address
def intToHexWinDbgFormat(address):
if arch == 32:
return "%08x" % address
if arch == 64:
formatted_hex = "%016x" % address
formatted_hex = formatted_hex[:8] + '`' + formatted_hex[8:]
return formatted_hex
def toHexByte(n):
"""
Converts a numeric value to a hex byte
Arguments:
n - the vale to convert (max 255)
Return:
A string, representing the value in hex (1 byte)
"""
return "%02X" % n
def hex2bin(pattern):
"""
Converts a hex string (\\x??\\x??\\x??\\x??) to real hex bytes
Arguments:
pattern - A string representing the bytes to convert
Return:
the bytes
"""
pattern = pattern.replace("\\x", "")
pattern = pattern.replace("\"", "")
pattern = pattern.replace("\'", "")
return ''.join([binascii.a2b_hex(i+j) for i,j in zip(pattern[0::2],pattern[1::2])])
def getPyKDVersion():
currentversion = pykd.version
currversion = ""
for versionpart in currentversion:
if versionpart != " ":
if versionpart == ",":
currversion += "."
else:
currversion += str(versionpart)
currversion = currversion.strip(".")
return currversion
def isPyKDVersionCompatible(currentversion,requiredversion):
# current version should be at least requiredversion
if currentversion == requiredversion:
return True
else:
currentparts = currentversion.split(".")
requiredparts = requiredversion.split(".")
if len(requiredparts) > len(currentparts):
delta = len(requiredparts) - len(currentparts)
cnt = 0
while cnt < delta:
currentparts.append("0")
cnt += 1
cnt = 0
while cnt < len(requiredparts):
if int(currentparts[cnt]) < int(requiredparts[cnt]):
return False
if int(currentparts[cnt]) > int(requiredparts[cnt]):
return True
cnt += 1
return True
def checkVersion():
pykdurl = "https://github.com/corelan/windbglib/raw/master/pykd/pykd.zip"
pykdurl03 = "https://github.com/corelan/windbglib/raw/master/pykd/pykd03.zip"
pykdversion_needed = "0.2.0.29"
if arch == 64:
pykdversion_needed = "0.2.0.29"
currversion = getPyKDVersion()
if not isPyKDVersionCompatible(currversion,pykdversion_needed):
print("*******************************************************************************************")
print(" You are running the wrong version of PyKD, please update ")
print(" Installed version : %s " % currversion)
print(" Required version : %s" % pykdversion_needed)
print(" You can get an updated PyKD version from one of the following sources:")
print(" - %s (preferred)" % pykdurl)
print(" (unzip with 7zip)")
print(" - https://githomelab.ru/pykd/pykd (newer versions may not work !)")
print("*******************************************************************************************")
import sys
sys.exit()
return
if pykdversion_needed != currversion:
# version must be higher
print("")
print("** You are running pykd.pyd v%s. Use at your own risk **" % currversion)
print("")
#print(" mona.py was tested against v%s" % pykdversion_needed)
#print(" and not against v%s" % currversion)
#print(" This version may not work properly.")
#print(" If you are having issues, I recommend to download the correct version from")
#print(" %s" % pykdurl)
#print(" (unzip with 7zip)")
#if currversion.startswith("0.3"):
# print("")
# print(" NOTE: PyKD v%s requires msdia120.dll, which only gets installed via Visual Studio 2013 (yup, I know)" % currversion)
# print(" Alternatively, you can use the copy of msdia120.dll from the pykd.pyd file")
# print(" (%s), but use this file at your own risk" % pykdurl03)
return
def getModulesFromPEB():
global PEBModList
peb = getPEBInfo()
imagenames = []
# http://www.nirsoft.net/kernel_struct/vista/PEB.html
# http://www.nirsoft.net/kernel_struct/vista/PEB_LDR_DATA.html
# http://www.nirsoft.net/kernel_struct/vista/LDR_DATA_TABLE_ENTRY.html
# The usage of _LDR_DATA_TABLE_ENTRY.SizeOfImage is very confusing and appears to actually contain the module base
offset = 0x20
if arch == 64:
offset = 0x40
moduleLst = pykd.typedVarList(peb.Ldr.deref().InLoadOrderModuleList, "ntdll!_LDR_DATA_TABLE_ENTRY", "InMemoryOrderLinks.Flink")
if len(PEBModList) == 0:
for mod in moduleLst:
thismod = pykd.loadUnicodeString(mod.BaseDllName).encode("utf8")
modparts = thismod.split("\\")
modulename = modparts[len(modparts)-1]
fullpath = thismod
exename = modulename
addtolist = True
moduleparts = modulename.split(".")
imagename = ""
if len(moduleparts) == 1:
imagename = moduleparts[0]
cnt = 0
while cnt < len(moduleparts)-1:
imagename = imagename + moduleparts[cnt] + "."
cnt += 1
imagename = imagename.strip(".")
# no windbg love for + - .
imagename = imagename.replace("+","_")
imagename = imagename.replace("-","_")
imagename = imagename.replace(".","_")
if imagename in imagenames:
# duplicate name ? Append _<baseaddress>
# mod.getAddress() + offset = _LDR_DATA_TABLE_ENTRY.SizeOfImage
baseaddy = int(pykd.ptrPtr(mod.getAddress() + offset))
imagename = imagename+"_%08x" % baseaddy
# check if module can be loaded
try:
modcheck = pykd.module(imagename)
except:
# change to image+baseaddress
# mod.getAddress() + offset = _LDR_DATA_TABLE_ENTRY.SizeOfImage
baseaddy = int(pykd.ptrPtr(mod.getAddress() + offset))
imagename = "image%08x" % baseaddy
try:
modcheck = pykd.module(imagename)
except:
# try with base addy
try:
modcheck = pykd.module(baseaddy)
imagename = modcheck.name()
#print "Name: %s" % modcheck.name()
#print "Imagename: %s" % modcheck.image()
except:
# try finding it with windbg 'ln'
cmd2run = "ln 0x%08x" % baseaddy
output = pykd.dbgCommand(cmd2run)
if "!__ImageBase" in output:
outputlines = output.split("\n")
for l in outputlines:
if "!__ImageBase" in l:
lparts = l.split("!__ImageBase")
leftpart = lparts[0]
leftparts = leftpart.split(" ")
imagename = leftparts[len(leftparts)-1]
try:
modcheck = pykd.module(imagename)
except:
print("")
print(" *** Error parsing module '%s' ('%s') at 0x%08x ***" % (imagename,modulename,baseaddy))
print(" *** Please open a github issue ticket at https://github.com/corelan/windbglib ***")
print(" *** and provide the output of the following 2 windbg commands in the ticket: ***")
print(" lm")
print(" !peb")
print(" *** Thanks")
print("")
addtolist = False
if addtolist:
imagenames.append(imagename)
PEBModList[imagename] = [exename, fullpath]
return moduleLst
def getModuleFromAddress(address):
offset = 0x20
if arch == 64:
offset = 0x40
global ModuleCache
# try fastest way first
try:
thismod = pykd.module(address)
# if that worked, we could add it to the cache if needed
modbase = thismod.begin()
modsize = thismod.size()
modend = modbase + modsize
modulename = thismod.image()
ModuleCache[modulename] = [modbase,modsize]
if (address >= modbase) and (address <= modend):
return thismod
except:
pass
# maybe cached
for modname in ModuleCache:
modparts = ModuleCache[modname]
# 0 : base
# 1 : size
modbase = modparts[0]
modsize = modparts[1]
modend = modbase + modsize
if (address >= modbase) and (address <= modend):
#print "0x%08x belongs to %s" % (address,modname)
return pykd.module(modname)
# not cached, find it
moduleLst = getModulesFromPEB()
for mod in moduleLst:
thismod = pykd.loadUnicodeString(mod.BaseDllName).encode("utf8")
modparts = thismod.split("\\")
modulename = modparts[len(modparts)-1].lower()
moduleparts = modulename.split(".")
modulename = ""
if len(moduleparts) == 1:
modulename = moduleparts[0]
cnt = 0
while cnt < len(moduleparts)-1:
modulename = modulename + moduleparts[cnt] + "."
cnt += 1
modulename = modulename.strip(".")
thismod = ""
imagename = ""
try:
moduleLst = getModulesFromPEB()
for mod in moduleLst:
thismod = pykd.loadUnicodeString(mod.BaseDllName).encode("utf8")
modparts = thismod.split("\\")
thismodname = modparts[len(modparts)-1]
moduleparts = thismodname.split(".")
if len(moduleparts) > 1:
thismodname = ""
cnt = 0
while cnt < len(moduleparts)-1:
thismodname = thismodname + moduleparts[cnt] + "."
cnt += 1
thismodname = thismodname.strip(".")
if thismodname.lower() == modulename.lower():
# mod.getAddress() + offset = _LDR_DATA_TABLE_ENTRY.SizeOfImage
baseaddy = int(pykd.ptrPtr(mod.getAddress() + offset))
baseaddr = "%08x" % baseaddy
lmcommand = pykd.dbgCommand("lm")
lmlines = lmcommand.split("\n")
foundinlm = False
for lmline in lmlines:
linepieces = lmline.split(" ")
if linepieces[0].upper() == baseaddr.upper():
cnt = 2
while cnt < len(linepieces) and not foundinlm:
if linepieces[cnt].strip(" ") != "":
imagename = linepieces[cnt]
foundinlm = True
break
cnt += 1
if not foundinlm:
imagename = "image%s" % baseaddr.lower()
break
except:
pykd.dprintln(traceback.format_exc())
try:
modulename = imagename
thismod = pykd.module(imagename)
modbase = thismod.begin()
modsize = thismod.size()
modend = modbase + modsize
ModuleCache[modulename] = [modbase,modsize]
if (address >= modbase) and (address <= modend):
return thismod
except:
thismod = pykd.module(address)
modbase = thismod.begin()
modsize = thismod.size()
modend = modbase + modsize
modulename = thismod.image()
ModuleCache[modulename] = [modbase,modsize]
if (address >= modbase) and (address <= modend):
return thismod
return None
def getImageBaseOnDisk(fullpath):
with open(fullpath, "rb") as pe:
data = pe.read()
nt_header_offset = struct.unpack("<I", data[0x3c:0x40])[0]
optional_header_offset = nt_header_offset + 0x18
magic = struct.unpack("<H", data[optional_header_offset:optional_header_offset+2])[0]
if magic == 0x10b:
#32bit
imageBase = struct.unpack("<I", data[optional_header_offset+28:optional_header_offset+28+4])[0]
else:
# 64bit
imageBase = struct.unpack("<Q", data[optional_header_offset+24:optional_header_offset+24+8])[0]
return imageBase
# Classes
class Debugger:
MemoryPages = {}
AsmCache = {}
OpcodeCache = {}
def __init__(self):
self.MemoryPages = {}
self.AsmCache = {}
self.allmodules = {}
self.OpcodeCache = {}
self.ModCache = {}
self.fillAsmCache()
self.knowledgedb = "windbglib.db"
def setKBDB(self,filename = "windbglib.db"):
self.knowledgedb = filename
return
def getKBDB(self):
return self.knowledgedb
def remoteVirtualAlloc(self, size=0x10000,interactive=False):
PAGE_EXECUTE_READWRITE = 0x40
VIRTUAL_MEM = ( 0x1000 | 0x2000 )
vaddr = self.rVirtualAlloc(0,size,VIRTUAL_MEM,PAGE_EXECUTE_READWRITE)
return vaddr
def rVirtualAlloc(self, lpAddress, dwSize, flAllocationType, flProtect):
PROCESS_VM_OPERATION = 0x0008
kernel32 = ctypes.windll.kernel32
pid = self.getDebuggedPid()
hprocess = kernel32.OpenProcess( PROCESS_VM_OPERATION, False, pid )
vaddr = kernel32.VirtualAllocEx(hprocess, lpAddress, dwSize, flAllocationType, flProtect)
kernel32.CloseHandle(hprocess)
return vaddr
def rVirtualProtect(self, lpAddress, dwSize, flNewProtect, lpflOldProtect = 0):
PROCESS_VM_OPERATION = 0x0008
kernel32 = ctypes.windll.kernel32
pid = self.getDebuggedPid()
hprocess = kernel32.OpenProcess(PROCESS_VM_OPERATION, False, pid)
pold_protect = ctypes.addressof(ctypes.c_int32(0))
returnval = kernel32.VirtualProtectEx(hprocess, lpAddress, dwSize, flNewProtect, pold_protect)
kernel32.CloseHandle(hprocess)
return returnval
def getAddress(self, functionname):
functionparts = functionname.split(".")
if len(functionparts) > 1:
modulename = functionparts[0]
functionname = functionparts[1]
funcref = "%s!%s" % (modulename,functionname)
cmd2run = "ln %s" % funcref
output = self.nativeCommand(cmd2run)
if "Exact matches" in output:
outputlines = output.split("\n")
for outputline in outputlines:
if "(" in outputline.lower():
lineparts = outputline.split(")")
address = lineparts[0].replace("(","")
return hexStrToInt(address)
else:
return 0
else:
return 0
def getCurrentTEBAddress(self):
return getTEBAddress()
"""
AsmCache
"""
def fillAsmCache(self):
self.AsmCache["push eax"] = "\x50"
self.AsmCache["push ecx"] = "\x51"
self.AsmCache["push edx"] = "\x52"
self.AsmCache["push ebx"] = "\x53"
self.AsmCache["push esp"] = "\x54"
self.AsmCache["push ebp"] = "\x55"
self.AsmCache["push esi"] = "\x56"
self.AsmCache["push edi"] = "\x57"
self.AsmCache["pop eax"] = "\x58"
self.AsmCache["pop ecx"] = "\x59"
self.AsmCache["pop edx"] = "\x5a"
self.AsmCache["pop ebx"] = "\x5b"
self.AsmCache["pop esp"] = "\x5c"
self.AsmCache["pop ebp"] = "\x5d"
self.AsmCache["pop esi"] = "\x5e"
self.AsmCache["pop edi"] = "\x5f"
self.AsmCache["jmp eax"] = "\xff\xe0"
self.AsmCache["jmp ecx"] = "\xff\xe1"
self.AsmCache["jmp edx"] = "\xff\xe2"
self.AsmCache["jmp ebx"] = "\xff\xe3"
self.AsmCache["jmp esp"] = "\xff\xe4"
self.AsmCache["jmp ebp"] = "\xff\xe5"
self.AsmCache["jmp esi"] = "\xff\xe6"
self.AsmCache["jmp edi"] = "\xff\xe7"
self.AsmCache["call eax"] = "\xff\xd0"
self.AsmCache["call ecx"] = "\xff\xd1"
self.AsmCache["call edx"] = "\xff\xd2"
self.AsmCache["call ebx"] = "\xff\xd3"
self.AsmCache["call esp"] = "\xff\xd4"
self.AsmCache["call ebp"] = "\xff\xd5"
self.AsmCache["call esi"] = "\xff\xd6"
self.AsmCache["call edi"] = "\xff\xd7"
self.AsmCache["jmp [eax]"] = "\xff\x20"
self.AsmCache["jmp [ecx]"] = "\xff\x21"
self.AsmCache["jmp [edx]"] = "\xff\x22"
self.AsmCache["jmp [ebx]"] = "\xff\x23"
self.AsmCache["jmp [esp]"] = "\xff\x24"
self.AsmCache["jmp [ebp]"] = "\xff\x25"
self.AsmCache["jmp [esi]"] = "\xff\x26"
self.AsmCache["jmp [edi]"] = "\xff\x27"
self.AsmCache["call [eax]"] = "\xff\x10"
self.AsmCache["call [ecx]"] = "\xff\x11"
self.AsmCache["call [edx]"] = "\xff\x12"
self.AsmCache["call [ebx]"] = "\xff\x13"
self.AsmCache["call [esp]"] = "\xff\x14"
self.AsmCache["call [ebp]"] = "\xff\x15"
self.AsmCache["call [esi]"] = "\xff\x16"
self.AsmCache["call [edi]"] = "\xff\x17"
self.AsmCache["xchg eax,esp"] = "\x94"
self.AsmCache["xchg ecx,esp"] = "\x87\xcc"
self.AsmCache["xchg edx,esp"] = "\x87\xd4"
self.AsmCache["xchg ebx,esp"] = "\x87\xdc"
self.AsmCache["xchg ebp,esp"] = "\x87\xec"
self.AsmCache["xchg edi,esp"] = "\x87\xfc"
self.AsmCache["xchg esi,esp"] = "\x87\xf4"
self.AsmCache["xchg esp,eax"] = "\x94"
self.AsmCache["xchg esp,ecx"] = "\x87\xcc"
self.AsmCache["xchg esp,edx"] = "\x87\xd4"
self.AsmCache["xchg esp,ebx"] = "\x87\xdc"
self.AsmCache["xchg esp,ebp"] = "\x87\xec"
self.AsmCache["xchg esp,edi"] = "\x87\xfc"
self.AsmCache["xchg esp,esi"] = "\x87\xf4"
self.AsmCache["pushad"] = "\x60"
self.AsmCache["popad"] = "\x61"
try:
# Python 2
xrange
except NameError:
# Python 3, xrange is now named range
xrange = range
for offset in xrange(4,80,4):
thisasm = "\x83\xc4" + hex2bin("%02x" % offset)
self.AsmCache["add esp,%02x" % offset] = thisasm
self.AsmCache["add esp,%x" % offset] = thisasm
self.AsmCache["retn"] = "\xc3"
self.AsmCache["retf"] = "\xdb"
for offset in xrange(0,80,2):
thisasm = "\xc2" + hex2bin("%02x" % offset) + "\x00"
self.AsmCache["retn %02x" % offset] = thisasm
self.AsmCache["retn %x" % offset] = thisasm
self.AsmCache["retn 0x%02x" % offset] = thisasm
return
"""
Knowledge
"""
def addKnowledge(self, id, object, force_add = 0):
allk = self.readKnowledgeDB()
if not id in allk:
allk[id] = object
else:
if object.__class__.__name__ == "dict":
for odictkey in object:
allk[id][odictkey] = object[odictkey]
with open(self.knowledgedb,"wb") as fh:
pickle.dump(allk,fh,-1)
return
def getKnowledge(self,id):
allk = self.readKnowledgeDB()
if id in allk:
return allk[id]
else:
return None
def readKnowledgeDB(self):
allk = {}
try:
with open(self.knowledgedb,"rb") as fh:
allk = pickle.load(fh)
except:
pass
return allk
def listKnowledge(self):
allk = self.readKnowledgeDB()
allid = []
for thisk in allk:
allid.append(thisk)
return allid
def cleanKnowledge(self):
try:
os.remove(self.knowledgedb)
except:
try:
with open(self.knowledgedb,"wb") as fh:
pickle.dump({},fh,-1)
except:
pass
pass
return
def forgetKnowledge(self,id,entry=""):
allk = self.readKnowledgeDB()
if entry == "":
if id in allk:
del allk[id]
else:
# find the entry
if id in allk:
thisidkb = allk[id]
if entry in thisidkb:
del thisidkb[entry]
allk[id] = thisidkb
with open(self.knowledgedb,"wb") as fh:
pickle.dump(allk,fh,-1)
return
def cleanUp(self):
self.cleanKnowledge()
return
"""
Placeholders
"""
def analysecode(self):
return
def isAnalysed(self):
return True
"""
LOGGING
"""
def toAsciiOnly(self, message):
newchar = []
for thischar in message:
if ord(thischar) >= 20 and ord(thischar) <= 126:
newchar.append(thischar)
else:
newchar.append(".")
return "".join(newchar)
def createLogWindow(self):
return
def log(self, message, highlight=0, address=None, focus=0):
if not address == None:
message = intToHex(address) + " | " + message
showdml = False
if highlight == 1:
showdml = True
message = "<b>" + message + "</b>"
pykd.dprintln(self.toAsciiOnly(message), showdml)
def logLines(self, message, highlight=0,address=None, focus=0):
allLines = message.split('\n')
linecnt = 0
messageprefix = ""
if not address == None:
messageprefix = " " * 10
messageprefix += " | "
for line in allLines:
if linecnt == 0:
self.log(line,highlight,address)
else:
self.log(messageprefix+line,highlight)
linecnt += 1
def updateLog(self):
return
def setStatusBar(self, message):
return
def error(self, message):
return
"""
Process stuff
"""
def getDebuggedName(self):
# http://www.nirsoft.net/kernel_struct/vista/PEB.html
# http://www.nirsoft.net/kernel_struct/vista/RTL_USER_PROCESS_PARAMETERS.html
peb = getPEBInfo()
ProcessParameters = peb.ProcessParameters
offset = 0x38
if arch == 64:
offset = 0x60
# ProcessParameters + offset = _RTL_USER_PROCESS_PARAMETERS.ImagePathName(_UNICODE_STRING)
# sImageFile = pykd.loadUnicodeString(ProcessParameters + offset).encode("utf8")
sImageFile = pykd.loadUnicodeString(int(ProcessParameters) + offset).encode("utf8")
sImageFilepieces = sImageFile.split("\\")
return sImageFilepieces[len(sImageFilepieces)-1]
def getDebuggedPid(self):
# http://www.nirsoft.net/kernel_struct/vista/TEB.html
# http://www.nirsoft.net/kernel_struct/vista/CLIENT_ID.html
teb = getTEBAddress()
offset = 0x20
if arch == 64:
offset = 0x40
# _TEB.ClientId(CLIENT_ID).UniqueProcess(PVOID)
pid = pykd.ptrDWord(teb+offset)
return pid
"""
OS stuff
"""
def getOsRelease(self):
peb = getPEBInfo()
majorversion = int(peb.OSMajorVersion)
minorversion = int(peb.OSMinorVersion)
buildversion = int(peb.OSBuildNumber)
osversion = str(majorversion)+"."+str(minorversion)+"."+str(buildversion)
return osversion
def getOsVersion(self):
return getOSVersion()
def getPyKDVersionNr(self):
return getPyKDVersion()
"""
Registers
"""
def getRegs(self):
regs = []
if arch == 32:
regs = Registers32BitsOrder[:]
regs.append("EIP")
if arch == 64:
regs = Registers64BitsOrder[:]
regs.append("RIP")
reginfo = {}
for thisreg in regs:
reginfo[thisreg.upper()] = int(pykd.reg(thisreg.lower()))
return reginfo
"""
Commands
"""
def nativeCommand(self,cmd2run):
try:
output = pykd.dbgCommand(cmd2run)
return output
except:
#dprintln(traceback.format_exc())
#dprintln(cmd2run)
return ""
"""
SEH
"""
def getSehChain(self):
# http://www.nirsoft.net/kernel_struct/vista/TEB.html
# http://www.nirsoft.net/kernel_struct/vista/NT_TIB.html
# http://www.nirsoft.net/kernel_struct/vista/EXCEPTION_REGISTRATION_RECORD.html
# x64 has no SEH chain
if arch == 64:
return []
sehchain = []
# get top of chain
teb = getTEBAddress()
# _TEB.NtTib(NT_TIB).ExceptionList(PEXCEPTION_REGISTRATION_RECORD)
nextrecord = pykd.ptrPtr(teb)
validrecord = True
while nextrecord != 0xffffffff and pykd.isValid(nextrecord):
# _EXCEPTION_REGISTRATION_RECORD.Next(PEXCEPTION_REGISTRATION_RECORD)
nseh = pykd.ptrPtr(nextrecord)
# _EXCEPTION_REGISTRATION_RECORD.Handler(PEXCEPTION_DISPOSITION)
seh = pykd.ptrPtr(nextrecord+4)
sehrecord = [nextrecord,seh]
sehchain.append(sehrecord)
nextrecord = nseh
return sehchain
"""
Memory
"""
def readMemory(self,location,size):
try:
#return hex2bin(''.join(("%02X" % n) for n in loadBytes(location,size)))
return pykd.loadChars(location,size)
except:
return ""
def readString(self,location):
if pykd.isValid(location):
try: