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import idaapi
from idc import *
from miasm2.analysis.machine import Machine
from miasm2.ir.translators import Translator
import miasm2.expression.expression as m2_expr
def max_size_to_size(max_size):
for size in [16, 32, 64]:
if (1 << size) - 1 == max_size:
return size
return None
def guess_machine():
"Return an instance of Machine corresponding to the IDA guessed processor"
processor_name = GetLongPrm(INF_PROCNAME)
max_size = GetLongPrm(INF_START_SP)
size = max_size_to_size(max_size)
if processor_name == "metapc":
# HACK: check 32/64 using INF_START_SP
if max_size == 0x80: # TODO XXX check
machine = Machine("x86_16")
elif size == 32:
machine = Machine("x86_32")
elif size == 64:
machine = Machine("x86_64")
else:
raise ValueError('cannot guess 32/64 bit! (%x)' % max_size)
elif processor_name == "ARM":
# TODO ARM/thumb
# hack for thumb: set armt = True in globals :/
# set bigendiant = True is bigendian
# Thumb, size, endian
info2machine = {(True, 32, True): "armtb",
(True, 32, False): "armtl",
(False, 32, True): "armb",
(False, 32, False): "arml",
(False, 64, True): "aarch64b",
(False, 64, False): "aarch64l",
}
is_armt = globals().get('armt', False)
is_bigendian = globals().get('bigendian', False)
infos = (is_armt, size, is_bigendian)
if not infos in info2machine:
raise NotImplementedError('not fully functional')
machine = Machine(info2machine[infos])
from miasm2.analysis.disasm_cb import guess_funcs, guess_multi_cb
from miasm2.analysis.disasm_cb import arm_guess_subcall, arm_guess_jump_table
guess_funcs.append(arm_guess_subcall)
guess_funcs.append(arm_guess_jump_table)
elif processor_name == "msp430":
machine = Machine("msp430")
elif processor_name == "mipsl":
machine = Machine("mips32l")
elif processor_name == "mipsb":
machine = Machine("mips32b")
else:
print repr(processor_name)
raise NotImplementedError('not fully functional')
return machine
def expr2colorstr(regs_ids, expr):
"""Colorize an Expr instance for IDA
@regs_ids: list of ExprId corresponding to available registers
@expr: Expr instance to colorize
"""
if isinstance(expr, m2_expr.ExprId):
s = str(expr)
if expr in regs_ids:
s = idaapi.COLSTR(s, idaapi.SCOLOR_REG)
elif isinstance(expr, m2_expr.ExprInt):
s = str(expr)
s = idaapi.COLSTR(s, idaapi.SCOLOR_NUMBER)
elif isinstance(expr, m2_expr.ExprMem):
s = '%s[%s]' % (idaapi.COLSTR('@' + str(expr.size),
idaapi.SCOLOR_RPTCMT),
expr2colorstr(regs_ids, expr.arg))
elif isinstance(expr, m2_expr.ExprOp):
out = []
for a in expr.args:
s = expr2colorstr(regs_ids, a)
if isinstance(a, m2_expr.ExprOp):
s = "(%s)" % s
out.append(s)
if len(out) == 1:
s = "%s %s" % (expr.op, str(out[0]))
else:
s = (" " + expr.op + " ").join(out)
elif isinstance(expr, m2_expr.ExprAff):
s = "%s = %s" % (
expr2colorstr(regs_ids, expr.dst), expr2colorstr(regs_ids, expr.src))
elif isinstance(expr, m2_expr.ExprCond):
cond = expr2colorstr(regs_ids, expr.cond)
src1 = expr2colorstr(regs_ids, expr.src1)
src2 = expr2colorstr(regs_ids, expr.src2)
s = "(%s?%s:%s)" % (cond, src1, src2)
elif isinstance(expr, m2_expr.ExprSlice):
s = "(%s)[%s:%s]" % (expr2colorstr(regs_ids, expr.arg),
idaapi.COLSTR(str(expr.start),
idaapi.SCOLOR_RPTCMT),
idaapi.COLSTR(str(expr.stop),
idaapi.SCOLOR_RPTCMT))
elif isinstance(expr, m2_expr.ExprCompose):
s = "{"
s += ", ".join(["%s, %s, %s" % (expr2colorstr(regs_ids, subexpr),
idaapi.COLSTR(str(idx),
idaapi.SCOLOR_RPTCMT),
idaapi.COLSTR(str(idx + expr.size),
idaapi.SCOLOR_RPTCMT))
for idx, subexpr in expr.iter_args()])
s += "}"
else:
s = str(expr)
return s
class translatorForm(idaapi.Form):
"""Translator Form.
Offer a ComboBox with available languages (ie. IR translators) and the
corresponding translation."""
flags = (idaapi.Form.MultiLineTextControl.TXTF_FIXEDFONT | \
idaapi.Form.MultiLineTextControl.TXTF_READONLY)
def __init__(self, expr):
"@expr: Expr instance"
# Init
self.languages = list(Translator.available_languages())
self.expr = expr
# Initial translation
text = Translator.to_language(self.languages[0]).from_expr(self.expr)
# Create the Form
idaapi.Form.__init__(self, r"""STARTITEM 0
Python Expression
{FormChangeCb}
<Language:{cbLanguage}>
<Translation:{result}>
""", {
'result': idaapi.Form.MultiLineTextControl(text=text,
flags=translatorForm.flags),
'cbLanguage': idaapi.Form.DropdownListControl(
items=self.languages,
readonly=True,
selval=0),
'FormChangeCb': idaapi.Form.FormChangeCb(self.OnFormChange),
})
def OnFormChange(self, fid):
if fid == self.cbLanguage.id:
# Display the Field (may be hide)
self.ShowField(self.result, True)
# Translate the expression
dest_lang = self.languages[self.GetControlValue(self.cbLanguage)]
try:
text = Translator.to_language(dest_lang).from_expr(self.expr)
except Exception, error:
self.ShowField(self.result, False)
return -1
# Update the form
self.SetControlValue(self.result,
idaapi.textctrl_info_t(text=str(text),
flags=translatorForm.flags))
return 1
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