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di.py
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di.py
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import os
import re
import idc
import ida_ua, idaapi
from superglobals import *
# try:
# import distorm3c as distorm3
# except ModuleNotFoundError:
import distorm3
# import distorm3 as distorm3
# from start import asBytesRaw
# from string_between import string_between
from idc import *
try:
from exectools import make_refresh, execfile, _import
# _import("from sfida.sf_common import asBytes, _isInt")
# _import("from sftools import eax")
# _import("from sfida.sf_string_between import string_between")
refresh_di = make_refresh(os.path.abspath(__file__))
refresh = make_refresh(os.path.abspath(__file__))
except ModuleNotFoundError:
pass
def get_ea_by_any(val, d=object):
"""
returns the address of a val (and if address is
a number, looks up the val first).
an easy way to accept either address or val as input.
"""
if isinstance(val, list):
return [get_ea_by_any(x) for x in val]
if isinstance(val, str):
r = idaapi.str2ea(val)
if r and r != idc.BADADDR:
return r
match = re.match(r'(sub|off|loc|byte|word|dword|qword|nullsub|locret)_([0-9A-F]+)$', val)
if match:
return int(match.group(2), 16)
return 0 if d == object else d
if isinstance(val, idaapi.vdui_t):
val = val.cfunc
if val is None:
return idc.get_screen_ea() if d == object else d
if isinstance(val, int):
return val
try:
for attr_name in ['start_ea', 'ea', 'entry_ea', 'start', 'min_ea']:
if hasattr(val, attr_name):
return getattr(val, attr_name)
except AttributeError:
pass
raise ValueError("Don't know how to convert {} '{}' to address".format(type(val), val))
def eax(*args):
return get_ea_by_any(*args)
def _isInt(o):
return isinstance(o, int)
def asBytes(o):
if isinstance(o, bytearray):
return bytes(o)
return o if isBytes(o) else o.encode('utf-8')
def asString(o):
return o if isString(o) else o.decode('utf-8')
def asBytesRaw(o):
if isinstance(o, bytearray):
return bytes(o)
return o.encode('raw_unicode_escape') if isinstance(o, str) else o
def distorm_64_bit_flag():
# return distorm3.Decode64Bits
return distorm3.Decode64Bits if idc.get_inf_attr(idc.INF_LFLAGS) & idc.LFLG_64BIT else distorm3.Decode32Bits
@static_vars(last=dict())
def IdaGetMnem(ea):
if IdaGetMnem.last and IdaGetMnem.last['ea'] == ea:
return IdaGetMnem.last['mnem']
IdaGetMnem.last['ea'] = ea
if idc.get_wide_word(ea) == 0x9066:
IdaGetMnem.last['mnem'] = "nop"
return IdaGetMnem.last['mnem']
if not "use_distorm":
IdaGetMnem.last['mnem'] = GetMnemDi(ea)
return IdaGetMnem.last['mnem']
else:
IdaGetMnem.last['mnem'] = idc.print_insn_mnem(ea)
return IdaGetMnem.last['mnem']
def GetMnemDi(ea=None):
"""
Get Mnemonic using Distorm3
@param ea: linear address
"""
ea = eax(ea)
d = de(ea)
if not d:
return ''
try:
d = d[0]
except IndexError:
pph(d)
raise
m = d.mnemonic.lower().replace('ret', 'retn')
return m
GetInsnMnem = IdaGetMnem
def GetMnemForce(ea=None):
"""
GetMnemForce
@param ea: linear address
"""
ea = eax(ea)
return GetInsn(ea).get_canon_mnem()
def GetInsn(*args):
if len(args) == 1:
insn = ida_ua.insn_t()
inslen = ida_ua.decode_insn(insn, args[0])
return insn
else:
return ida_ua.decode_insn(*args)
# DELIT_NOTRUNC
def MyGetInstructionLength(*args):
lengths = []
if len(args) == 1:
# ida method
ea = args[0]
insn = ida_ua.insn_t()
inslen = ida_ua.decode_insn(insn, ea)
if inslen:
return inslen
lengths.append(inslen)
# distorm method
insn_de = de(ea, 16)
if insn_de:
insn_de = insn_de[0]
if insn_de.rawFlags == 0xffff:
return 0
size = insn_de.size
lengths.append(inslen)
if len(lengths) == 2 and lengths[0] and lengths[1] and lengths[0] == lengths[1]:
return size
if not lengths[0] or not lengths[1]:
return 0
raise RuntimeError("[MyGetInstructionLength] {:x} differing insnlen: ida: {} distorm: {}".format(ea, inslen, size))
else:
return ida_ua.decode_insn(*args)
def getLength(ea):
return MyGetInstructionLength(ea)
def GetInsLen(ea):
return getLength(ea)
def getCode(ea=None, length=None):
"""
get bytes comprising instruction
(wrapper around idc.get_bytes)
@param ea: linear address
@param length: number of bytes
"""
ea = eax(ea)
length = length or MyGetInstructionLength(ea) or IdaGetInsnLen(ea)
if length > ea:
length -= ea
r = idc.get_bytes(ea, length)
return r
def GetFuncCode(ea):
ea = get_ea_by_any(ea) or idc.here()
result = []
for (startea, endea) in idautils.Chunks(ea):
result.extend([idc.get_wide_byte(x) for x in range(startea, endea)])
return bytearray(result)
def GetFuncCodeNoJunk(ea):
ba = bytearray()
def add_insn(x):
if x.mnem not in ('nop', 'jmp'):
ba.extend(x.bytes)
# {'result': (x.ea, x.ea + x.size)}
# n = ll.node(x)
r = AdvanceToMnemEx(ea, lambda x: not ida_funcs.is_same_func(x, ea), lambda x, *a: add_insn(x))
return ba
def GetFuncCodeIndexNoJunk(ea):
l = []
def add_insn(x):
if x.mnem not in ('nop', 'jmp'):
l.extend([a for a in range(x.ea, x.ea + x.size)])
# {'result': (x.ea, x.ea + x.size)}
# n = ll.node(x)
r = AdvanceToMnemEx(ea, lambda x: not ida_funcs.is_same_func(x, ea), lambda x, *a: add_insn(x))
return l
def GetFuncCodeNoJunk_(ea):
ea = get_ea_by_any(ea) or idc.here()
result = []
for (startea, endea) in idautils.Chunks(ea):
for head in idautils.Heads(startea, endea):
insn = GetInsn(head)
if insn.itype not in (ida_allins.NN_nop, ida_allins.NN_jmp):
result.extend([idc.get_wide_byte(x) for x in range(insn.ea, insn.ea + insn.size)])
return bytearray(result)
def GetFuncCodeIndexNoJunk_(ea):
ea = get_ea_by_any(ea) or idc.here()
result = []
for (startea, endea) in idautils.Chunks(ea):
for head in idautils.Heads(startea, endea):
insn = GetInsn(head)
if insn.itype not in (ida_allins.NN_nop, ida_allins.NN_jmp):
result.extend([x for x in range(insn.ea, insn.ea + insn.size)])
return result
def GetFuncCodeIndexTest(ea):
ea = get_ea_by_any(ea) or idc.here()
result = []
for (startea, endea) in idautils.Chunks(ea):
for head in idautils.Heads(startea, endea):
insn = GetInsn(head)
result.extend([x for x in range(insn.ea, insn.ea + insn.size)])
return result
def GetFuncCodeIndex(ea):
ea = get_ea_by_any(ea) or idc.here()
result = []
for (startea, endea) in idautils.Chunks(ea):
result.extend([x for x in range(startea, endea)])
return result
def getCodeAsList(ea, length):
return [ord(x) for x in idc.get_bytes(ea, length)]
def ripadd(group, rip):
splut = re.split(r'([+-])', group, 1)
if len(splut) == 3:
return "rel 0x{:x}".format(rip + int(splut[1] + splut[2], 16))
return "rel " + "".join(group)
def diAsBytes(s):
if isinstance(s, bytearray):
s = bytes(s)
elif isinstance(s, str):
s = bytes(hex_pattern(s, wildcard=0x0))
return s
def diIs64Bit():
info = idaapi.get_inf_structure()
return info.is_64bit()
def diInsn(code, offset = 0):
code = diAsBytes(code)
if isinstance(code, list):
code = bytearray(code)
if isinstance(code, bytearray):
# code = code.decode('raw_unicode_escape')
code = asBytesRaw(code)
dt = distorm_64_bit_flag()
iterable = distorm3.DecodeGenerator(offset, code, dt)
for (offset, size, instruction, hexdump) in iterable:
return instruction.lower().replace('[cr4:', '[')
def diInsnsPretty(code, ea = None, dt=distorm_64_bit_flag()):
code = diAsBytes(code)
iterable = diInsnsIter(asBytes(bytearray(code)), ea)
for (offset, size, instruction, hexdump) in iterable:
yield instruction.lower().replace('[cr4:', '[')
def diInsns(code, ea = None, dt=distorm_64_bit_flag()):
code = diAsBytes(code)
iterable = diInsnsIter(asBytes(bytearray(code)), ea)
return [x for x in iterable]
# def diInsn(code, offset = 0):
# dt = distorm_64_bit_flag()
# iterable = distorm3.DecodeGenerator(offset, code, dt)
# for (offset, size, instruction, hexdump) in iterable:
# return instruction
def diInsnsIter(code, ea = None, dt=distorm_64_bit_flag()):
code = diAsBytes(code)
if ea is None:
ea = idc.get_screen_ea()
if isinstance(code, list):
code = bytearray(code)
if isinstance(code, bytearray):
# try:
# code = code.decode('raw_unicode_escape')
# except UnicodeDecodeError as e:
# # b'\xe9\\uo\x03'
# globals()['code'] = code
# raise e
code = asBytesRaw(code)
return distorm3.DecodeGenerator(ea, code, dt)
def di_decode_insn(code_or_ea, length=16, dt=distorm_64_bit_flag()):
if _isInt(code_or_ea):
ea = eax(code_or_ea)
code = getCode(ea, length)
elif isByteish(code_or_ea):
code = asBytesRaw(code_or_ea)
ea = 0
for insn_de in deCodeIter(code, ea, dt=dt):
return insn_de
def di_can_decode(code_or_ea, length=16, dt=distorm_64_bit_flag()):
return di_decode_insn(code_or_ea, length, dt).rawFlags != 65535
def idafy(operand, ea, size):
regex = r"\b(rip[+-]0x[0-9a-f]+)"
operand = re.sub(regex, lambda m: ripadd(m.group(), ea + size), operand, 0, re.IGNORECASE)
regex = r"\b(0x[0-9])\b"
operand = re.sub(regex, lambda m: str(int(m.group(), 16)), operand, 0, re.IGNORECASE)
regex = r"\b(0x[0-9a-f]{8,})\b"
operand = re.sub(regex, lambda m: get_name_or_hex(int(m.group(), 16)), operand, 0, re.IGNORECASE)
return operand
def diInsnsObjectIter(code, ea=None, dt=distorm_64_bit_flag()):
code = diAsBytes(code)
for it in diInsnsIter(asBytes(bytearray(code)), ea):
yield SimpleAttrDict({
'ea': it[0],
'size': it[1],
'insn': idafy(it[2], it[0], it[1]),
'bytes': bytearray().fromhex(it[3]),
})
def diCode(code, offset = 0, noHex=0):
code = diAsBytes(code)
dt = distorm_64_bit_flag()
iterable = distorm3.DecodeGenerator(offset, code, dt)
result = []
for (offset, size, instruction, hexdump) in iterable:
# print("%.8x: %-32s %s" % (offset, hexdump, instruction))
if noHex:
result.append(instruction)
else:
result.append("%-32s %s" % (hexdump, instruction))
return result
# It could also be used as a returned list:
# l = distorm3.Decode(offset, code, options.dt)
# for (offset, size, instruction, hexdump) in l:
# print("%.8x: %-32s %s" % (offset, hexdump, instruction))
def deCode(code, ea = 0, dt=distorm_64_bit_flag(), features = 0):
code = diAsBytes(code)
return distorm3.Decompose(ea, code, dt, features)
def deCodeIter(code, ea = 0, dt=distorm_64_bit_flag(), features = 0):
code = diAsBytes(code)
return distorm3.DecomposeGenerator(ea, code, dt, features)
def de(ea = None, length = None):
if ea is None:
ea = ScreenEA()
if length is None:
length = MyGetInstructionLength(ea)
if length > ida_ida.cvar.inf.min_ea:
length = length - ea
return deCode(getCode(ea, length), ea)
def de1(ea=None, length=None):
return _.first(de(ea=ea, length=length))
def derange(ea = None, length = None, dt=distorm_64_bit_flag(), features = 0):
if ea is None:
ea = ScreenEA()
if length is None:
length = MyGetInstructionLength(ea)
return deCodeIter(getCode(ea, length), ea)
def deranger(ea = None, length = None, dt=distorm_64_bit_flag(), features =
# distorm3.DF_STOP_ON_CALL |
# distorm3.DF_STOP_ON_UNC_BRANCH |
# distorm3.DF_STOP_ON_INT |
distorm3.DF_STOP_ON_PRIVILEGED |
# distorm3.DF_STOP_ON_RET |
distorm3.DF_STOP_ON_UNDECODEABLE):
if ea is None:
ea = ScreenEA()
if length is None:
length = 1024
return deCodeIter(getCode(ea, length), ea, features = features)
def der(ea = None, length = None, features = None):
if ea is None:
ea = ScreenEA()
if length is None:
length = 1024
if length > ea:
length = length - ea
if features is not None:
gen = deranger(ea, length, features = features)
else:
gen = deranger(ea,length)
return [x for x in gen]
def destart2(ea=None, length=None):
"""
[alpha] attempt to find start of function
@param ea: linear address
@param length: how many preview bytes to check
"""
if isinstance(ea, list):
return [destart(x) for x in ea]
ea = eax(ea)
length = length or 300
l = [der(ea - x, x) for x in range(1, length)]
j = [len(x) for x in l]
m = _.max(j)
p = j.index(m) + 1
q = l[p-1]
setglobal('destart_debug', {'l': l, 'j': j, 'm': m, 'p': p, 'q': q})
q.reverse()
for i in range(1, len(q)):
# if q[i].flowControl != 'FC_NONE':
# q = q[0:i]
# break
if IsRef(q[i].address):
q = q[0:i+1]
break
# print("not popping", q[-1])
result = q[-1].address
for ea in range(result, result + 16):
# print("ea: {:x} isref: {}".format(ea, IsRef(ea)))
if IsRef(ea):
return ea
return result
def destart(ea=None, length=None):
"""
[alpha] attempt to find start of function containing multiple 'PUSH'
instructions by disassembling from `ea` backwards
@param ea: linear address
@param length: how many preview bytes to check
"""
if isinstance(ea, list):
return [destart(x) for x in ea]
ea = eax(ea)
length = length or 300
l = [der(ea - x, x) for x in range(1, length)]
# doesn't help much
l = [x for x in l if _.all(x, lambda x, *a: x.mnemonic.startswith(('PUSH', 'MOVUPD', 'LEA')))] # not _.contains(x, lambda x, *a: 'FLAG_NOT_DECODABLE' in x.flags)]
# dprint("[destart] l")
# print("[destart] l:{}".format(l))
# j = [len(x) for x in l]
# m = _.max(j)
# p = j.index(m) + 1
# q = l[p-1]
q = l[-1]
# setglobal('destart_debug', {'l': l, 'j': j, 'm': m, 'p': p, 'q': q})
setglobal('destart_debug', {'l': l.copy(), 'q': q.copy()})
q.reverse()
if False:
for i in range(1, len(q)):
if q[i].flowControl != 'FC_NONE':
q = q[0:i]
break
if IsRef(q[i].address):
q = q[0:i+1]
break
while q and not str(q[-1]).startswith('PUSH'):
print("popping", q[-1])
# print("q: {}".format(pf(q)))
q.pop();
if not q:
return None
# print("not popping {} at {:x}".format(q[-1], q[-1].address))
result = q[-1].address
for ea in range(result, result + 16):
# print("ea: {:x} isref: {}".format(ea, IsRef(ea)))
if IsRef(ea):
return ea
return result
def label(addr, colon = 0):
l = get_name_by_any(addr)
if not l:
l = "loc_{:x}".format(addr)
if colon:
return "{:16}".format(l + ':')
return "{:16}".format(l)
def _di_indent(insn):
return "{:16}".format("")
def instruction(insn):
s = str(insn)
if insn.rawFlags & (1 << 7):
# rip_relative
opn = -1
for i, o in enumerate(insn.operands):
# must be a numeric/binary check for this
if o.type == 'AbsoluteMemory':
target = o.disp + insn.address + insn.size
opn = i
if opn > -1:
regex = r"(rip[+-]0[x0-9a-f]+)"
s = re.sub(regex, hex(target), s, flags=re.IGNORECASE)
return re.sub('0x(145[0-9a-fA-F]{6})', lambda m: label(int(m.group(1), 16)), s)
def deri(ea = None, length = None, features = None):
if ea is None:
ea = ScreenEA()
if length is None:
length = 1024
if features is not None:
d = der(ea, length, features = features)
else:
d = der(ea,length)
targets = [distorm3._getRegularTarget(x) for x in d]
targets = [x for x in targets if x and x > 0x145000000]
for i in d:
if i.address in targets:
yield label(i.address, colon=1) + instruction(i)
else:
yield _di_indent(i) + instruction(i)
def derip(ea = None):
if ea is None:
ea = ScreenEA()
g = deri(ea, 0x8000, features=distorm3.DF_STOP_ON_UNDECODEABLE)
output = "{0}: ; {1:x}\n".format(idc.get_name(ea, GN_VISIBLE), ea)
output += '\n'.join([x for x in g])
output += '\n\n'
return output
def deriploc():
output = ''
for f in FunctionsMatching('.*_RELOC_11'):
output += derip(f)
return output
def di(ea = None, length = None):
if ea is None:
ea = ScreenEA()
if length is None:
length = MyGetInstructionLength(ea)
return diCode(getCode(ea, length), ea)
def dii(ea = None, length = None):
if ea is None:
ea = ScreenEA()
if length is None: # Default to 1 instruction
length = MyGetInstructionLength(ea)
return diInsn(getCode(ea, length), ea)
def log2(v):
"""
http://graphics.stanford.edu/~seander/bithacks.html#IntegerLogObvious
"""
a = [0, 1, 28, 2, 29, 14, 24, 3, 30, 22, 20, 15, 25, 17, 4, 8, 31, 27, 13, 23, 21, 19, 16, 7, 26, 12, 18, 6, 11, 5, 10, 9]
n = ((v * 0x077CB531) & 0xffffffff) >> 27
r = a[n];
return r
name_addr_map = dict()
def get_name_or_hex(ea):
global name_addr_map
name_v = idc.get_name(ea, GN_VISIBLE)
name = idc.get_name(ea)
if name != name_v:
return hex(ea)
# name_addr_map[name_v] = (name_v, name, ea)
# return name_v
if not name:
return hex(ea)
return name
def get_operand_size_type(size):
sizes = ['byte', 'word', 'dword', 'qword', 'dqword', 'tword', 'dtword']
n = log2(size // 8);
if n >= len(sizes):
raise ValueError("size: {} [{}]".format(size, n))
return sizes[n];
def diida(ea=None, length=None, mnemOnly=False, filter=None, iteratee=None, returnLength=False, labels=False):
if ea is None:
ea = ScreenEA()
if IsOffset(ea, loose=1):
if returnLength:
return 8, "dq offset {}".format(ean(getptr(ea)))
if IsData(ea) and IsStruct(ea):
if returnLength:
return idc.next_not_tail(ea) - ea, "struct"
return "struct"
if length is None: # Default to 1 instruction
length = MyGetInstructionLength(ea) or 15
if length > ea:
length = length - ea
start_ea = ea
end = ea + length
next_ea = ea
result = []
while next_ea < end and MyGetInstructionLength(next_ea):
ea = next_ea
length = MyGetInstructionLength(ea)
next_ea = ea + length
if next_ea > end:
continue
if callable(filter):
if not filter(ea):
continue
insn = diInsn(getCode(ea, length), ea) # .lower()
insn_de = deCode(getCode(ea, length), ea)
insn_label = idc.get_name(ea, ida_name.GN_VISIBLE)
if insn_de:
insn_de = insn_de[0]
else:
result.append('** ERROR **')
break
def getMnem(asm, _insn_de=None):
if asm.startswith(('rep', 'lock')):
return asm
if _insn_de:
mnem = _insn_de.mnemonic.lower()
return mnem.replace('ret', 'retn')
else:
mnem = asm.split(' ')
return mnem[0].lower().replace('ret', 'retn')
mnem = getMnem(insn, insn_de)
if mnem == '' or mnem.startswith(('rep', 'repne', 'repe', 'lock')):
result.append(insn)
continue
if mnemOnly:
result.append(mnem)
continue
opers = []
opercount = len(insn_de.operands)
operand_part = string_between(' ', '', insn)
if not operand_part:
result.append(mnem)
# result.append(string_between('', ' ', insn, repl=mnem))
continue
operands = operand_part.split(',')
operands = [s.strip() for s in operands]
for i in range(len(insn_de.operands)): # , operand in enumerate(operands):
operand = operands[i]
# .text:0000000140016120 0B8 BA 5F 60 38 CE mov edx, 0CE38605Fh
# mov EDX, 0xffffffffeeaf512a
# len(d.operands) == 2 and d.operands[1].type == 'Immediate' and d.operands[1].value < 0 and d.operands[1].size == 32: v = d.operands[1].value; hex(v & 0xffffffff)
o = insn_de.operands[i]
if o.value < 0 and o.size == 32 and o.type == 'Immediate':
operand = "0x%x" % (o.value & 0xffffffff)
post_colon = string_between('CR4:', ']', operand)
if post_colon:
size = insn_de.operands[i].size
if size:
dtyp_name = get_operand_size_type(size)
if dtyp_name != None:
operand = "{0} [{1}]".format(dtyp_name, post_colon)
else:
operand = "[{0}]".format(post_colon)
e = insn_de
regex = r"\b(rip[+-]0x[0-9a-f]+)"
operand = re.sub(regex, lambda m: ripadd(m.group(), e.address + e.size), operand, 0, re.IGNORECASE)
regex = r"\b(0x[0-9])\b"
operand = re.sub(regex, lambda m: str(int(m.group(), 16)), operand, 0, re.IGNORECASE)
regex = r"\b(0x[0-9a-f]{8,})\b"
operand = re.sub(regex, lambda m: get_name_or_hex(int(m.group(), 16)), operand, 0, re.IGNORECASE)
opers.append(operand)
asm = ""
if labels:
if insn_label:
asm = insn_label + ":\n"
asm += " "
asm += "{0} {1}".format(mnem, ", ".join(opers))
result.append(asm.rstrip())
if returnLength:
return next_ea - start_ea, '\n'.join(result)
return '\n'.join(result)
def diidaIter(ea = None, length = None, code = None, mnemOnly = False, iterate = False, labels = True):
output = []
def label_line(addr):
true_name = idc.get_name(addr)
label = idc.get_name(addr, ida_name.GN_VISIBLE)
return "{}:".format(label)
def sub_header(addr):
true_name = idc.get_name(addr)
label = idc.get_name(addr, ida_name.GN_VISIBLE)
tags = "" # get_tags(addr)
return ("" + \
"; =============== S U B R O U T I N E =======================================" + \
"; public " + str(true_name) + " proc" + \
";" + \
"; tags: " + str(tags) + "" + \
";" + \
"" + str(label) + ":").split("\n")
def chunk_start(addr):
owners = GetChunkOwners(addr)
fstart = GetFuncStart(addr)
other_owners = [x for x in owners if x != fstart]
owner_true_name = idc.get_name(fstart)
other_owners_names = [idc.get_name(x) for x in other_owners]
other_owner_lines = ''
if other_owners:
for owner, owner_name in zip(other_owners, other_owners_names):
other_owner_lines += "; additionally chunk " + str(ida_funcs.get_fchunk_num(owner, addr)) + " of " + str(owner_name) + "\n"
label = idc.get_name(addr, ida_name.GN_VISIBLE)
tags = [get_tags(x) for x in owners]
return "" + \
"; --------------- C h u n k S t a r t -------------------------------------" + \
"; chunk " + str(ida_funcs.get_fchunk_num(fstart, addr)) + " of " + str(owners_true_name) + "" + \
"" + str(other_owner_lines or ';') + "" + \
"; tags: " + str(", ".join(tags)) + "" + \
";" + \
"" + str(label) + ":".split("\n")
def chunk_end(addr):
return """
; --------------- C h u n k E n d -----------------------------------------
""".split("\n")
def out(line):
for l in A(line):
print(line)
output.append(line)
# dprint("[debug] ea, length, code")
# print("[debug] ea:{}, length:{}, code:{}".format(ea, length, code))
if ea is None:
ea = ScreenEA()
if length is None: # Default to 1 instruction
length = MyGetInstructionLength(ea)
insn_iter = diInsnsIter(getCode(ea, length) if not code else code, ea) # .lower()
insn_de_iter = deCodeIter(getCode(ea, length) if not code else code, ea)
# dprint("[debug] insn_iter, insn_de_iter")
# print("[debug] insn_iter:{}, insn_de_iter:{}".format(insn_iter, insn_de_iter))
def getMnem(asm, _insn_de=None):
if _insn_de:
mnem = _insn_de.mnemonic.lower()
return mnem.replace('ret', 'retn')
else:
mnem = asm.split(' ', 1)
if mnem == '' or mnem in ('rep', 'repne', 'repe'):
return insn.lower()
return mnem[0].lower().replace('ret', 'retn')
for insn_di, insn_de in zip(insn_iter, insn_de_iter):
# dprint("[debug] insn_di, insn_de")
# print("[debug] insn_di:{}, insn_de:{}".format(insn_di, insn_de))
addr, insn_len, insn, _hex = insn_di
insn = insn.lower()
if labels and idc.get_name(addr):
if IsChunkEnd(addr):
out(chunk_end(addr))
if IsFuncHead(addr):
out(sub_header(addr))
elif IsChunkStart(addr):
out(chunk_start(addr))
else:
out(label_line(addr))
mnem = getMnem(insn, insn_de)
if mnem == '' or mnem.startswith('rep'):
out(insn)
continue
if mnemOnly:
out(mnem)
continue
mnem = insn_de.mnemonic.lower().replace('ret', 'retn').replace('int ', 'int')
opers = []
operand_part = string_between(' ', '', insn)
if not operand_part:
out(mnem)
continue
operands = operand_part.split(',')
opercount_de = len(insn_de.operands)
opercount_di = len(operands)
if opercount_de != opercount_di:
out(mnem)
continue
operands = [s.strip() for s in operands]
for i in range(opercount_di): # , operand in enumerate(operands):
try:
operand = operands[i]
except IndexError:
print("[error] IndexError, operand[{}]. {} at {:x}. opercount_de: {} opercount_di: {}".format(i, mnem, ea, opercount_de, opercount_di))
# generate really bad exception
a = fuckamup
# .text:0000000140016120 0B8 BA 5F 60 38 CE mov edx, 0CE38605Fh
# mov EDX, 0xffffffffeeaf512a
# len(d.operands) == 2 and d.operands[1].type == 'Immediate' and d.operands[1].value < 0 and d.operands[1].size == 32: v = d.operands[1].value; hex(v & 0xffffffff)
#
# pp({'insn_de.operands': insn_de.operands, 'insn_di.operands': operands})
o = insn_de.operands[i]
if o.value < 0 and o.size == 32 and o.type == 'Immediate':
operand = "0x%x" % (o.value & 0xffffffff)
# post_colon = string_between('CR4:', ']', operand)
# if post_colon:
# size = insn_de.operands[i].size
# if size:
# dtyp_name = get_operand_size_type(size)
# if dtyp_name != None:
# operand = "{0} [{1}]".format(dtyp_name, post_colon)
# else:
# operand = "[{0}]".format(post_colon)
e = insn_de
regex = r"\b(rip[+-]0x[0-9a-f]+)"
operand = re.sub(regex, lambda m: ripadd(m.group(), e.address + e.size), operand, 0, re.IGNORECASE)
regex = r"\b(0x[0-9])\b"
operand = re.sub(regex, lambda m: str(int(m.group(), 16)), operand, 0, re.IGNORECASE)
regex = r"\b(0x[0-9a-f]{9,})\b"
operand = re.sub(regex, lambda m: get_name_or_hex(int(m.group(), 16)), operand, 0, re.IGNORECASE)
opers.append(operand)
asm = "{0} {1}".format(mnem, ", ".join(opers))
if iterate:
yield asm
# else: return asm
def idii(ea = None, length = None):
if ea is None:
ea = idc.get_screen_ea()
insn = idc.GetDisasm(ea)
def getMnem(asm):
mnem = asm.split(' ', 1)
if mnem == '' or mnem in ('rep', 'repne', 'repe'):
return insn.lower().replace('ret', 'retn')
return mnem[0].lower().replace('ret', 'retn')
mnem = getMnem(insn)
if mnem == '' or mnem.startswith('rep'):
return insn
# mnem = insn_de.mnemonic.lower().replace('ret', 'retn').replace('int ', 'int')
opers = []
operand_part = string_between(' ', '', insn)
if not operand_part:
return mnem
operands = operand_part.split(',')
opercount = len(operands)
operands = [s.strip() for s in operands]
for i in range(opercount): # , operand in enumerate(operands):
operand = operands[i]
# any processing can happen here
opers.append(operand)
asm = "{0} {1}".format(mnem, ", ".join(opers))
return asm
def mov_reg_reg():
ba = bytearray()
for b in range(0x00, 0x100):
for c in range(0x00, 0x100):
i = diInsn(ba.fromhex("{:02x}{:02x}".format(b, c)), 3)
if i.startswith('mov '):
print("{:08b} {:08b}\t{}".format(b, c, i))
def find_movs():
ba = bytearray(b'000')
for rex in range(0x40, 0x50):
for a in range(0x0, 0x100):
for b in range(0x00, 0x100):
ba[0] = rex
ba[1] = a
ba[2] = b
r = diInsn(ba, 3)
if r.startswith(("mov ", "lea ")) and "0x" not in r:
print("{} : {:02x} {:02x} {:02x}".format(r, rex, a, b))
def transmute_mov(hex_string):
""" transform various mov variants, lea and push/pop equiv. to standard sig
@param hex_string pattern for single mov, lea, or combined push+pop
@returns normalised pattern in the form, '8b c0' or '48 8b c0' or similar
"""
def retsig(pk):
return ' '.join(["{:02x}".format(x) for x in pk if x])
for x in hex_string.split(" "):
if len(x) > 2 or "?" in x:
return hex_string
rex = 0
bt = bytearray().fromhex(hex_string)
# remove leading rex (0x48) byte
if len(bt) > 2:
if bt[0] & 0xf0 == 0x40:
rex = bt[0]
bt = bt[1:]
# check for 4 byte lea reg, [reg] 48 8d 04 24
if len(bt) == 3:
(a, z) = struct.unpack(">HB", bt)
# reverse
if rex and a & 0b1000110100000100 == 0b1000110100000100 and z == 0x24:
b = a ^ 0b010011000000
t1 = (a & 0b00111000) >> 3
t2 = (a & 0b00000111) << 3
b = (b & ~0b00111111) | t1 | t2
return retsig(struct.pack(">BH", rex, b))
if 0:
if rex and a & 0b1000110100000100 == 0b1000110100000100 and z == 0x24:
b = a ^ 0b011011000000
return retsig(struct.pack(">BH", rex, b))
if len(bt) == 2:
(a, ) = struct.unpack(">H", bt)
# [reverse] check for 3 byte lea reg, [reg] 48 8b c4
if rex and a & 0b1000110100000100 == 0b1000110100000000:
b = a ^ 0b010011000000
t1 = (a & 0b00111000) >> 3
t2 = (a & 0b00000111) << 3
b = (b & ~0b00111111) | t1 | t2
return retsig(struct.pack(">BH", rex, b))
# check for 3 byte lea reg, [reg] 48 8b c4
if 0:
if rex and a & 0b1000110100000100 == 0b1000110100000000:
b = a ^ 0b011011000000
return retsig(struct.pack(">BH", rex, b))
# [reverse] check for push reg; pop reg
if a & 0b1111100011111000 == 0b0101000001011000:
t1 = (a & 0b0000011100000000) >> 8
t2 = (a & 0b0000000000000111) << 3
b = 0x89c0 | t1 | t2
rex = 0x48
return retsig(struct.pack(">BH", rex, b))
# check for push reg; pop reg
if 0:
if a & 0b1111100011111000 == 0b0101000001011000:
t1 = (a & 0b0000011100000000) >> 5
t2 = (a & 0b0000000000000111)
b = 0x8bc0 | t1 | t2
rex = 0x48
return retsig(struct.pack(">BH", rex, b))