Python bitstring.ReadError() Examples

The following are 12 code examples of bitstring.ReadError(). 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 bitstring , or try the search function

Example #1

Source File: game_data.py From swarfarm with Apache License 2.0

6 votes

def __init__(self, *args, **kwargs):
        if not _Strings._tables:
            f = _Strings._get_file()

            _Strings.version = f.read('intle:32')

            try:
                while True:
                    table_len = f.read('intle:32')
                    tbl = {}

                    for _ in range(table_len):
                        str_id, str_len = f.readlist('intle:32, intle:32')
                        parsed_str = binascii.a2b_hex(f.read('hex:{}'.format(str_len * 8))[:-4])
                        tbl[str_id] = parsed_str.decode("utf-8").strip()

                    _Strings._tables.append(tbl)

            except ReadError:
                # EOF
                pass

Example #2

Source File: static.py From swarfarm with Apache License 2.0

5 votes

def decrypt_images(**kwargs):
    path = kwargs.pop('path', 'herders/static/herders/images')
    for im_path in iglob(f'{path}/**/*.png', recursive=True):
        encrypted = BitStream(filename=im_path)

        # Check if it is 'encrypted'. 8th byte is 0x0B instead of the correct signature 0x0A
        encrypted.pos = 0x07 * 8
        signature = encrypted.peek('uint:8')
        if signature == 0x0B:
            print(f'Decrypting {im_path}')
            # Correct the PNG signature
            encrypted.overwrite('0x0A', encrypted.pos)

            # Replace bits with magic decrypted values
            try:
                while True:
                    pos = encrypted.pos
                    val = encrypted.peek('uint:8')
                    encrypted.overwrite(Bits(uint=com2us_decrypt_values[val], length=8), pos)
            except ReadError:
                # EOF
                pass

            # Write it back to the file
            with open(im_path, 'wb') as f:
                encrypted.tofile(f)

            continue

        # Check for weird jpeg format with extra header junk. Convert to png.
        encrypted.pos = 0
        if encrypted.peek('bytes:5') == b'Joker':
            print(f'Trimming and converting weird JPEG to PNG {im_path}')
            del encrypted[0:16 * 8]

            # Open it as a jpg and resave to disk
            try:
                new_imfile = Image.open(io.BytesIO(encrypted.tobytes()))
                new_imfile.save(im_path)
            except IOError:
                print(f'Unable to open {im_path}')

Example #3

Source File: lift_bf.py From angr-platforms with BSD 2-Clause "Simplified" License

5 votes

def parse(self, bitstrm):
        self.last_instruction = False
        data = Instruction.parse(self, bitstrm)
        try:
            bitstrm.peek(8)
        except bitstring.ReadError:
            # We ran off the end!
            self.last_instruction = True
        return data

Example #4