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Diffstat (limited to 'example/ida/utils.py')
| -rw-r--r-- | example/ida/utils.py | 169 |
1 files changed, 169 insertions, 0 deletions
diff --git a/example/ida/utils.py b/example/ida/utils.py new file mode 100644 index 00000000..8b9dcf6a --- /dev/null +++ b/example/ida/utils.py @@ -0,0 +1,169 @@ +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 guess_machine(): + "Return an instance of Machine corresponding to the IDA guessed processor" + + processor_name = GetLongPrm(INF_PROCNAME) + + if processor_name == "metapc": + + # HACK: check 32/64 using INF_START_SP + max_size = GetLongPrm(INF_START_SP) + if max_size == 0x80: # TODO XXX check + machine = Machine("x86_16") + elif max_size == 0xFFFFFFFF: + machine = Machine("x86_32") + elif max_size == 0xFFFFFFFFFFFFFFFF: + 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 + is_armt = globals().get('armt', False) + is_bigendian = globals().get('bigendian', False) + if is_armt: + if is_bigendian: + machine = Machine("armtb") + else: + machine = Machine("armtl") + else: + if is_bigendian: + machine = Machine("armb") + else: + machine = Machine("arml") + + 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("mipsl") + elif processor_name == "mipsb": + machine = Machine("mipsb") + 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(start), + idaapi.SCOLOR_RPTCMT), + idaapi.COLSTR(str(stop), + idaapi.SCOLOR_RPTCMT)) + for subexpr, start, stop in expr.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 |