# Copyright (c) 2015-2019 Vector 35 Inc # # Permission is hereby granted, free of charge, to any person obtaining a copy # of this software and associated documentation files (the "Software"), to # deal in the Software without restriction, including without limitation the # rights to use, copy, modify, merge, publish, distribute, sublicense, and/or # sell copies of the Software, and to permit persons to whom the Software is # furnished to do so, subject to the following conditions: # # The above copyright notice and this permission notice shall be included in # all copies or substantial portions of the Software. # # THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR # IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, # FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE # AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER # LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING # FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS # IN THE SOFTWARE. # # # Simple NSF file loader, primarily for analyzing: # https://scarybeastsecurity.blogspot.com/2016/11/0day-exploit-compromising-linux-desktop.html # from binaryninja.binaryview import BinaryView from binaryninja.architecture import Architecture from binaryninja.log import log_error, log_info from binaryninja.types import Symbol from binaryninja.enums import SymbolType, SegmentFlag import struct import traceback class NSFView(BinaryView): name = "NSF" long_name = "Nintendo Sound Format" def __init__(self, data): BinaryView.__init__(self, parent_view=data, file_metadata=data.file) self.platform = Architecture["6502"].standalone_platform @classmethod def is_valid_for_data(self, data): hdr = data.read(0, 128) if len(hdr) < 128: return False if hdr[0:5] != "NESM\x1a": return False song_count = struct.unpack("B", hdr[6])[0] if song_count < 1: log_info("Appears to be an NSF, but no songs.") return False return True def init(self): try: hdr = self.parent_view.read(0, 128) self.version = struct.unpack("B", hdr[5])[0] self.song_count = struct.unpack("B", hdr[6])[0] self.starting_song = struct.unpack("B", hdr[7])[0] self.load_address = struct.unpack("