import re as regular_expression
import idaapi as ida_interface
import idautils as ida_utilities
import idc as idc_interface
import ida_typeinf as ida_type
import ida_search
import ida_lines
import ida_hexrays
import ida_bytes

def GetCfunc(ea):
    f = idaapi.get_func(ea)
    if f is None:
        return None

    # Decompile the function.
    cfunc = None
    try:
        cfunc = idaapi.decompile(f)
    finally:
        return cfunc

def ChangeVariableType(func_ea, lvar, tif):
    lsi = ida_hexrays.lvar_saved_info_t()
    lsi.ll = lvar
    lsi.type = ida_typeinf.tinfo_t(tif)
    if not ida_hexrays.modify_user_lvar_info(func_ea, ida_hexrays.MLI_TYPE, lsi):
        print("[E] Could not modify lvar type for %s" % lvar.name)
        return False
    return True

def decompile_function( function_location ):
    decompile_handle = ida_hexrays.open_pseudocode( function_location, 0 )

    for local_variable in GetCfunc( function_location ).lvars:
        type_info = local_variable.type()

        if ida_type.is_type_ptr( type_info.get_decltype() ):
            dword_type = ida_type.tinfo_t()
            ida_type.parse_decl( dword_type, ida_type.get_idati(), "_DWORD;", ida_type.PT_TYP )

            ChangeVariableType( function_location, local_variable, dword_type )

    decompile_handle.refresh_view(True)

decompile_function( 0xDEADBEEF ) # put your own function here