Python idaapi.FUNC_THUNK Examples

The following are 8 code examples for showing how to use idaapi.FUNC_THUNK(). 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.

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Example 1
Project: VMAttack   Author: anatolikalysch   File: Util.py    License: MIT License 5 votes vote down vote up
def is_import_or_lib_func(ea):
    """
    Is ea part of an imported function or a known library?
    @param ea: any ea within the function scope
    @return: True if function is either imported or a known library function.
    """

    return Functions(ea).flags & (idaapi.FUNC_LIB | idaapi.FUNC_THUNK) 
Example 2
Project: mcsema   Author: lifting-bits   File: util.py    License: Apache License 2.0 5 votes vote down vote up
def is_thunk(ea):
  """Returns true if some address is a known to IDA to be a thunk."""
  flags = idc.GetFunctionFlags(ea)
  return 0 < flags and 0 != (flags & idaapi.FUNC_THUNK) 
Example 3
Project: DIE   Author: ynvb   File: IDAConnector.py    License: MIT License 5 votes vote down vote up
def is_import_or_lib_func(ea):
    """
    Is ea part of an imported function or a known library?
    @param ea: any ea within the function scope
    @return: True if function is either imported or a known library function.
    """

    return sark.Function(ea).flags & (idaapi.FUNC_LIB | idaapi.FUNC_THUNK) 
Example 4
Project: DIE   Author: ynvb   File: IDATypeWrapers.py    License: MIT License 5 votes vote down vote up
def __init__(self, ea, iatEA=None, library_name=None):
        """
        Ctor
        """
        self.logger = logging.getLogger(__name__)

        self.ea = ea        # Effective Address of the function
        self.iatEA = iatEA  # If imported function, the address in the IAT

        try:
            function = sark.Function(ea)
        except sark.exceptions.SarkNoFunction:
            raise DIE.Lib.DIE_Exceptions.DieNoFunction("No Function at 0x%08X" % (ea, ))

        self.funcName = get_function_name(function.ea)
        self.func_start = function.startEA
        self.func_end = function.endEA

        self.proto_ea = self.getFuncProtoAdr()      # Address of function prototype
        self.typeInfo = idaapi.tinfo_t()            # Function type info
        self.funcInfo = idaapi.func_type_data_t()   # Function info
        self.argNum = 0                             # Number of input arguments

        self.args = []      # Function argument list
        self.retArg = None  # Return argument

        self.library_name = library_name  # If library function, name of containing library
        self.isLibFunc = False
        if self.iatEA:
            self.isLibFunc = True  # Is this a library function

        elif sark.Function(ea).flags & (idaapi.FUNC_LIB | idaapi.FUNC_THUNK):
            self.isLibFunc = True

        try:
            self.getArguments()

        except Exception as ex:
            self.logger.error("Failed to get function arguments for function %s: %s", self.funcName, ex) 
Example 5
Project: Sark   Author: tmr232   File: function.py    License: MIT License 5 votes vote down vote up
def is_thunk(self):
        """ Thunk (jump) function. """
        return bool(self.flags & idaapi.FUNC_THUNK)  # 0x00000080 
Example 6
Project: bap-ida-python   Author: BinaryAnalysisPlatform   File: ida.py    License: MIT License 5 votes vote down vote up
def output_symbols(out):
    """Dump symbols."""
    try:
        from idaapi import get_func_name2 as get_func_name
        # Since get_func_name is deprecated (at least from IDA 6.9)
    except ImportError:
        from idaapi import get_func_name
        # Older versions of IDA don't have get_func_name2
        # so we just use the older name get_func_name

    def func_name_propagate_thunk(ea):
        current_name = get_func_name(ea)
        if current_name[0].isalpha():
            return current_name
        func = idaapi.get_func(ea)
        temp_ptr = idaapi.ea_pointer()
        ea_new = idaapi.BADADDR
        if func.flags & idaapi.FUNC_THUNK == idaapi.FUNC_THUNK:
            ea_new = idaapi.calc_thunk_func_target(func, temp_ptr.cast())
        if ea_new != idaapi.BADADDR:
            ea = ea_new
        propagated_name = get_func_name(ea) or ''  # Ensure it is not `None`
        if len(current_name) > len(propagated_name) > 0:
            return propagated_name
        else:
            return current_name
            # Fallback to non-propagated name for weird times that IDA gives
            #     a 0 length name, or finds a longer import name

    for ea in idautils.Segments():
        fs = idautils.Functions(idc.SegStart(ea), idc.SegEnd(ea))
        for f in fs:
            out.write('("%s" 0x%x 0x%x)\n' % (
                func_name_propagate_thunk(f),
                idc.GetFunctionAttr(f, idc.FUNCATTR_START),
                idc.GetFunctionAttr(f, idc.FUNCATTR_END))) 
Example 7
Project: ida-minsc   Author: arizvisa   File: function.py    License: BSD 3-Clause "New" or "Revised" License 5 votes vote down vote up
def is_thunk(cls, func):
        '''Return true if the function `func` is considered a code thunk.'''
        fn = by(func)
        return fn.flags & idaapi.FUNC_THUNK == idaapi.FUNC_THUNK 
Example 8
Project: prefix   Author: gaasedelen   File: ida_prefix.py    License: MIT License 4 votes vote down vote up
def graph_down(ea, path=set()):
    """
    Recursively collect all function calls.

    Copied with minor modifications from
    http://hooked-on-mnemonics.blogspot.com/2012/07/renaming-subroutine-blocks-and.html
    """
    path.add(ea)

    #
    # extract all the call instructions from the current function
    #

    call_instructions = []
    instruction_info = idaapi.insn_t()
    for address in idautils.FuncItems(ea):

        # decode the instruction
        if not idaapi.decode_insn(instruction_info, address):
            continue

        # check if this instruction is a call
        if not idaapi.is_call_insn(instruction_info):
            continue

        # save this address as a call instruction
        call_instructions.append(address)

    #
    # iterate through all the instructions in the target function (ea) and
    # inspect all the call instructions
    #

    for x in call_instructions:

        #  TODO
        for r in idautils.XrefsFrom(x, idaapi.XREF_FAR):
            #print(0x%08X" % h, "--calls-->", "0x%08X" % r.to)
            if not r.iscode:
                continue

            # get the function pointed at by this call
            func = idaapi.get_func(r.to)
            if not func:
                continue

            # ignore calls to imports / library calls / thunks
            if (func.flags & (idaapi.FUNC_THUNK | idaapi.FUNC_LIB)) != 0:
                continue

            #
            # if we have not traversed to the destination function that this
            # call references, recurse down to it to continue our traversal
            #

            if r.to not in path:
                graph_down(r.to, path)

    return path