def xinfo(clx, addr, n=4, is_regs=False):
value = None
_addr = 0
rstr = ''
rstr += '0x{{:0{}x}}'.format(process.size_t * 2).format(
addr) #hex(addr)
sym = info.symbol(addr)
if sym:
rstr += '({})'.format(sym)
if is_regs is False:
rstr += ': '
_rstr = rstr
try:
for i in range(n):
value = info.getsize_t(addr)
if i != 0 or is_regs:
rstr += " -> "
_rstr = rstr
_addr = addr
addr = value
if is_regs:
info.getsize_t(value)
rstr += '0x{{:0{}x}}'.format(process.size_t * 2).format(value)
if is_regs is False:
_rstr = rstr
sym = info.symbol(value)
if sym:
rstr += '({})'.format(sym)
# _addr=addr
# addr=value
except:
if is_regs is False:
fmt = '("{}")'
else:
fmt = '"{}"'
try:
cstr = pykd.loadCStr(_addr)
if (cstr and value > 0x1f
and ((ord(cstr[0]) < 0x7f) and
(cstr[:1:] == '' or ord(cstr[:1:]) < 0x7f) and
(cstr[1:2:] == '' or ord(cstr[1:2:]) < 0x7f))):
rstr = _rstr + fmt.format(
cstr.replace("\n", "\\n")[:process.size_t * 2 - 2:])
elif is_regs:
rstr = _rstr + '0x{{:0{}x}}'.format(
process.size_t * 2).format(value)
except:
# try:
# wstr=pykd.loadUnicodeString(_addr)
# if wstr:
# rstr=_rstr+fmt.format(wstr[:process.size_t*2-2:])
# elif is_regs:
# rstr=_rstr+'0x{{:0{}x}}'.format(process.size_t*2).format(value)
# except:
if value is not None and is_regs:
rstr += '0x{{:0{}x}}'.format(process.size_t *
2).format(value)
# pass
return rstr
def hookHandlerNative():
"""Address of the func name as returned by getMethodName is pointed by
EAX+0x08 However, unlike the published AVM source code claims, setNative
function in the NPSWF32 has an additional check before the correct function
address is assigned to the MethodInfo object. That logic is reimplemented
here."""
global GBP
address = pykd.ptrPtr(pykd.reg("eax")+0x8)
comp_byte = pykd.ptrByte(pykd.ptrPtr(pykd.reg("esp")+0x18) + 0x38)
if comp_byte > 0:
nativefunc = pykd.ptrPtr(pykd.reg("esi")+0x28)
else:
nativefunc = pykd.ptrPtr(pykd.reg("esi")+0x24)
if pykd.isValid(address):
methodName = pykd.loadCStr(address)
if pykd.isValid(nativefunc):
print "[^] NATIVE METHOD: at 0x%x \t offset: 0x%x \tName: %s" % \
(nativefunc,nativefunc-NPS['base_addr'],
methodName.decode("utf-8","replace"))
if NPS["TraceNative"] and methodName not in GBP['BP_FUNCS'] and\
methodName not in GBP['BP_RFUNCS']:
if NPS["Debug"]:
print "[Debug] Setting bp for tracing on 0x%x" % nativefunc
GBP[nativefunc] = pykd.setBp(nativefunc, lambda: functionHandler(methodName))
func_breakpoints(methodName.decode("utf-8","replace"), nativefunc)
else:
print "[!] No native function found. Something is likely wrong!!!"
return pykd.executionStatus.NoChange
def dereference(self, pointer, target_id=0):
"""
Recursively dereference a pointer for display
"""
fmt = ('<' if self.get_byte_order() == 'little' else '>') + {2: 'H', 4: 'L', 8: 'Q'}[self.get_addr_size()]
addr = pointer
chain = []
# recursively dereference
for i in range(0, self.max_deref):
try:
[ptr] = pykd.loadPtrs(addr, 1)
if ptr in chain:
break
chain.append(('pointer', addr))
addr = ptr
except:
log.exception("Dereferencing pointer 0x{:X}".format(addr))
break
# get some info for the last pointer
# first try to resolve a symbol context for the address
if len(chain):
p, addr = chain[-1]
output = pykd.findSymbol(addr)
sym = True
try:
# if there's no symbol found, pykd returns a hex string of the address
if int(output, 16) == addr:
sym = False
log.debug("no symbol context")
except:
pass
if sym:
chain.append(('symbol', output.strip()))
else:
log.debug("no symbol context")
mem = pykd.loadBytes(addr, 2)
if mem[0] < 127:
if mem[1] == 0:
a = []
for i in range(0, self.max_string, 2):
mem = pykd.loadBytes(addr + i, 2)
if mem == [0, 0]:
break
a.extend(mem)
output = array.array('B', a).tostring().decode('UTF-16').encode('latin1')
chain.append(('unicode', output))
else:
output = pykd.loadCStr(addr)
chain.append(('string', output))
log.debug("chain: {}".format(chain))
return chain
def dereference(self, pointer, target_id=0):
"""
Recursively dereference a pointer for display
"""
fmt = ('<' if self.get_byte_order() == 'little' else '>') + {2: 'H', 4: 'L', 8: 'Q'}[self.get_addr_size()]
addr = pointer
chain = []
# recursively dereference
for i in range(0, self.max_deref):
try:
[ptr] = pykd.loadPtrs(addr, 1)
if ptr in chain:
break
chain.append(('pointer', addr))
addr = ptr
except:
log.exception("Dereferencing pointer 0x{:X}".format(addr))
break
# get some info for the last pointer
# first try to resolve a symbol context for the address
if len(chain):
p, addr = chain[-1]
output = pykd.findSymbol(addr)
sym = True
try:
# if there's no symbol found, pykd returns a hex string of the address
if int(output, 16) == addr:
sym = False
log.debug("no symbol context")
except:
pass
if sym:
chain.append(('symbol', output.strip()))
else:
log.debug("no symbol context")
mem = pykd.loadBytes(addr, 2)
if mem[0] < 127:
if mem[1] == 0:
a = []
for i in range(0, self.max_string, 2):
mem = pykd.loadBytes(addr + i, 2)
if mem == [0, 0]:
break
a.extend(mem)
output = array.array('B', a).tostring().decode('UTF-16').encode('latin1')
chain.append(('unicode', output))
else:
output = pykd.loadCStr(addr)
chain.append(('string', output))
log.debug("chain: {}".format(chain))
return chain
def hookHandlerInterp():
"""..."""
global GBP
# address of the func name as returned by getMethodName
address = pykd.ptrPtr(pykd.reg("eax")+0x8)
if pykd.isValid(address):
methodName = pykd.loadCStr(address)
GBP['INTERP_RET'] = pykd.setBp((NPS["SetInterpRet"]-4),
lambda: hookHandlerInterpRet(methodName))
return pykd.executionStatus.NoChange
def get_string(ptr):
""" try to get string from a pointer """
max_length = 30
try:
s = pykd.loadCStr(ptr)
if not all(c in string.printable for c in s):
return None
if len(s) > max_length:
return s[:max_length:] + "..."
else:
return s
except:
return None
def examine_data(value, step=4): try: out = pykd.loadQWords(value,1)[0] if step==8 else pykd.loadDWords(value,1)[0] if self.is_address(out): return out except: return value str = pykd.loadCStr(value) #str = pykd.loadWStr(value) if is_printable(str): if len(str)<step: return "%x \"%s\"" % (out, str) return str return out
def _cb_CIasin_pentium4(self, bp):
sp = pykd.reg("esp")
# reversed this a while a go now
bridge = pykd.loadCStr((pykd.ptrPtr(sp + 0x78) + 0xb))
print("(+) DEBUG ASIN: %s" % bridge)
if self.bp_end_asin is None:
disas = pykd.dbgCommand("uf %x" % self.asin_addr).split('\n')
for i in disas:
if 'ret' in i:
self.ret_addr = i.split()[0]
break
self.bp_end_asin = pykd.setBp(int(self.ret_addr, 16), self.return_call_back)
return False
def main():
nt_module = pykd.module("nt")
ObpTypeDirectoryObject_addr = int(nt_module.ObpTypeDirectoryObject)
ObpTypeDirectoryObject_value = pykd.loadQWords(ObpTypeDirectoryObject_addr,
1)[0]
dict_entry_list = pykd.loadQWords(ObpTypeDirectoryObject_value, 37)
print 'TypeName PoolTag PoolType'
for dict_entry in dict_entry_list:
if dict_entry == 0:
continue
type_obj_addr = pykd.loadQWords(dict_entry + 8, 1)[0]
name_str = pykd.loadUnicodeString(type_obj_addr + 0x10)
key_str = pykd.loadCStr(type_obj_addr + 0xc0)
pool_type = pykd.loadDWords(type_obj_addr + 0x40 + 0x24, 1)[0]
if pool_type == 1:
pool_type = 'PagedPool'
elif pool_type == 0x200:
pool_type = 'NonPagedPoolNx'
print '%s\n%s\n%s\n' % (name_str, key_str, pool_type)
def hookHandlerJit():
"""Unlike setNative, setJit is a fairly simple in that the GprMethodProc
parameted contains the resolved address of the jitted function.
We simply need to read that register value."""
global GBP
# address of the func name as returned by getMethodName
address = pykd.ptrPtr(pykd.reg("eax")+0x8)
# address of the jitted function
jitfunc = pykd.ptrPtr(pykd.reg("esp")+0x28)
if pykd.isValid(address):
methodName = pykd.loadCStr(address)
if pykd.isValid(jitfunc):
print "[&] JITTED METHOD: at 0x%x \t offset: 0x%x \t\tName: %s" %\
(jitfunc,0,methodName.decode("utf-8","replace"))
if NPS["TraceJit"] and methodName not in GBP['BP_FUNCS'] and\
methodName not in GBP['BP_RFUNCS']:
if NPS["Debug"]:
print "[Debug] Setting bp for tracing on 0x%x" % jitfunc
GBP[jitfunc] = pykd.setBp(jitfunc, lambda: functionHandler(methodName))
func_breakpoints(methodName.decode("utf-8","replace"), jitfunc)
else:
print "[!] No jitted function found. Something is likely wrong!!!"
return pykd.executionStatus.NoChange
def testAmbiguousFieldAccess(self):
derivedFiledVal = pykd.loadCStr(
pykd.typedVar("g_fieldSameNameStruct").m_field)
self.assertEqual(derivedFiledVal, "toaster")
def testBigCStr(self):
self.assertEqual(
0x2000, len(pykd.loadCStr(pykd.ptrPtr(target.module.bigCStr))))
self.assertEqual(
0x2000, len(pykd.loadWStr(pykd.ptrPtr(target.module.bigWStr))))
def testCStr(self):
self.assertEqual('Hello', pykd.loadCStr(target.module.helloStr))
self.assertEqual(u'Hello', pykd.loadWStr(target.module.helloWStr))
) == pykd.CPUType.AMD64 else pykd.typeInfo("Int4B")
mallocProto = pykd.defineFunction(PVoid, pykd.callingConvention.NearC)
mallocProto.append("size", size_t)
malloc = pykd.typedVar(
mallocProto,
pykd.getOffset("malloc")) #getOffset("malloc") may take a long time
# get a type of a std::string
stringClass = pykd.typeInfo(fullStringClassName)
# allocate memory
buffer = malloc(stringClass.size())
# get a typed access to memory. As you may see the instance of the std::string is not initialized
stringVar = pykd.typedVar(stringClass, buffer)
# set up parameters for a constructor call.
param = pykd.stackAlloc(100)
pykd.writeCStr(param, "hello")
# call ctor for initalizing. std::string has several forms of constructor so we need to note prototype
ctor = stringVar.method(stringClassName, "Void(__thiscall)(Char*)")
ctor(param)
#check result:
print(pykd.loadCStr(stringVar.c_str()))
pykd.stackFree(100)
import pykd
# Parsing the ProcessList with pykd
if __name__ == "__main__":
if not pykd.isWindbgExt():
print("Script cannot be launched outside Windbg")
quit(0)
pActiveProcessList = pykd.module("nt").PsActiveProcessHead
# pActiveProcessList = pykd.getOffset("nt!PsActiveProcessHead") -> slower than using module("nt")...
processList = pykd.typedVarList(pActiveProcessList, "nt!_EPROCESS",
"ActiveProcessLinks")
for i, process in enumerate(processList):
pykd.dprint("Process " + str(i) + ":")
name = pykd.loadCStr(process.ImageFileName)
print(name)
def is_cstr(clx, addr):
try:
pykd.loadCStr(addr)
except:
return False
return True
def get_xul_version():
version = pykd.loadCStr(pykd.module('xul').offset('gToolkitVersion'))
return version
print("Script cannot be launched outside Windbg")
quit(0)
if len(sys.argv) < 2:
print("Expecting process name as argument")
quit(0)
targetProcessName = sys.argv[1]
pykd.dprintln("Target: " + targetProcessName)
processList = pykd.typedVarList(
pykd.module("nt").PsActiveProcessHead, "nt!_EPROCESS",
"ActiveProcessLinks")
for i, process in enumerate(processList):
if pykd.loadCStr(process.ImageFileName) == targetProcessName:
targetProcessList = pykd.module("nt").typedVar(
"_LIST_ENTRY", process.ActiveProcessLinks)
print("ActiveProcessLinks: 0x%08x" % process.ActiveProcessLinks)
print(targetProcessList)
#prevFlink = module("nt").typedVar("_LIST_ENTRY",targetProcessList.Blink)
#nextBlink = module("nt").typedVar("_LIST_ENTRY",targetProcessList.Flink)
print("prevFlink: 0x%08x" % pykd.ptrQWord(targetProcessList.Blink))
print("nextBlink: 0x%08x" %
pykd.ptrQWord(targetProcessList.Flink + 8))
targetProcessBlink = targetProcessList.Blink
pykd.writeQWords(targetProcessList.Blink,
[targetProcessList.Flink])
pykd.writeQWords(targetProcessList.Flink, [targetProcessBlink])
pykd.writeQWords(process.ActiveProcessLinks,
def get_xul_version():
version = pykd.loadCStr(pykd.module('xul').offset('gToolkitVersion'))
return version