Python idautils.DataRefsFrom() Examples

The following are 6 code examples of idautils.DataRefsFrom(). These examples are extracted from open source projects. You can vote up the ones you like or vote down the ones you don't like, and go to the original project or source file by following the links above each example. You may also want to check out all available functions/classes of the module idautils , or try the search function .
Example #1
Source Project: idawilli   Author: williballenthin   File: hint_calls.py    License: Apache License 2.0 6 votes vote down vote up
def enum_string_refs_in_function(fva):
    '''
    yield the string references in the given function.
    
    Args:
      fva (int): the starting address of a function
    
    Returns:
      sequence[tuple[int, int, str]]: tuples of metadata, including:
       - the address of the instruction referencing a string
       - the address of the string
       - the string
    '''
    for ea in enum_function_addrs(fva):
        for ref in idautils.DataRefsFrom(ea):
            stype = idc.GetStringType(ref)
            if stype < 0 or stype > 7:
                continue

            CALC_MAX_LEN = -1
            s = str(idc.GetString(ref, CALC_MAX_LEN, stype))

            yield ea, ref, s 
Example #2
Source Project: Sark   Author: tmr232   File: line.py    License: MIT License 5 votes vote down vote up
def drefs_from(self):
        """Destination addresses of data references from this line."""
        return idautils.DataRefsFrom(self.ea) 
Example #3
Source Project: UEFI_RETool   Author: yeggor   File: analyser.py    License: MIT License 5 votes vote down vote up
def get_protocols(self):
        """found UEFI protocols information in idb"""
        for service_name in self.gBServices:
            for address in self.gBServices[service_name]:
                ea, found = address, False
                if self.arch == 'x86':
                    for _ in range(1, 25):
                        ea = idc.prev_head(ea)
                        if (idc.get_operand_value(ea, 0) > self.base
                                and idc.print_insn_mnem(ea) == 'push'):
                            found = True
                            break
                if self.arch == 'x64':
                    for _ in range(1, 16):
                        ea = idc.prev_head(ea)
                        if (idc.get_operand_value(ea, 1) > self.base
                                and idc.print_insn_mnem(ea) == 'lea'):
                            found = True
                            break
                if not found:
                    continue
                for xref in idautils.DataRefsFrom(ea):
                    if idc.print_insn_mnem(xref):
                        continue
                    if not check_guid(xref):
                        continue
                    cur_guid = get_guid(xref)
                    record = {
                        'address': xref,
                        'service': service_name,
                        'guid': cur_guid,
                    }
                    if not self.Protocols['all'].count(record):
                        self.Protocols['all'].append(record) 
Example #4
Source Project: rematch   Author: nirizr   File: identity_hash.py    License: GNU General Public License v3.0 5 votes vote down vote up
def data(self):
    h = self.keleven
    for ea in idautils.FuncItems(self.offset):
      h = self._cycle(h, idc.Byte(ea))
      # skip additional bytes of any instruction that contains an offset in it
      if idautils.CodeRefsFrom(ea, False) or idautils.DataRefsFrom(ea):
        continue
      for i in range(ea + 1, ea + idc.ItemSize(ea)):
        h = self._cycle(h, idc.Byte(i))
    return h 
Example #5
Source Project: Stingray   Author: darx0r   File: Stingray.py    License: GNU General Public License v3.0 5 votes vote down vote up
def find_function_strings( func_ea ):

    end_ea = idc.FindFuncEnd(func_ea)
    if end_ea == idaapi.BADADDR: return

    strings = []
    for line in idautils.Heads(func_ea, end_ea):
        refs = idautils.DataRefsFrom(line)
        for ref in refs:
            try:
                strings.append( String(line, ref) )
            except StringParsingException:
                continue

    return strings 
Example #6
Source Project: vt-ida-plugin   Author: VirusTotal   File: disassembler.py    License: Apache License 2.0 4 votes vote down vote up
def get_opcodes(addr, strict):
    """Get current bytes of the instruction pointed at addr.

    Args:
      addr: address of the current instruction
      strict: be more restrictive when applying wildcards (True) or not (False)

    Returns:
      String: hex-encoded representation of the bytes obtained at addr
    """

    if strict:
      offsets_types = {idaapi.o_far, idaapi.o_mem, idaapi.o_imm}
    else:
      offsets_types = {idaapi.o_far, idaapi.o_mem}

    pattern = ''
    mnem = idautils.DecodeInstruction(addr)

    if mnem is not None:
      op1_type = mnem.Op1.type
      op2_type = mnem.Op2.type

      logging.debug(
          '[VTGREP] Instruction: %s  [%d, %d, %d]',
          idc.generate_disasm_line(addr, 0),
          mnem.itype,
          op1_type,
          op2_type
          )

      inst_len = idc.get_item_size(addr)
      drefs = [x for x in idautils.DataRefsFrom(addr)]

      # Checks if any operand constains a memory address
      if (drefs and
          ((op1_type == idaapi.o_imm) or (op2_type == idaapi.o_imm)) or
          op1_type in offsets_types or op2_type in offsets_types):
        pattern = Disassembler.wildcard_instruction(addr)
      # Checks if the instruction is a CALL (near or far) or
      # if it's a JMP (excluding near jumps)
      else:
        if ((mnem.itype == idaapi.NN_call) or
            (mnem.itype == idaapi.NN_jmp and op1_type != idaapi.o_near)):
          pattern = Disassembler.wildcard_instruction(addr)
        # In any other case, concatenate the raw bytes to the current string
        else:
          pattern = binascii.hexlify(idc.get_bytes(addr, inst_len))
          pattern = pattern.decode('utf-8')
      return pattern
    else: return 0