def initialize_parser():
description = 'Process data stream and subtract each byte by ' \
'the supplied key. Numeric values may be provided ' \
'as regular integers or hexadecimal with the \'0x\' prefix.'
parser = BinDataHelper.generic_args(description)
parser.add_argument('key',
type=BinDataHelper.autokey,
help='Single or multibyte key value. '
'May be supplied as an integer or '
'as a hex value with the \'0x\' prefix.')
parser.add_argument('-c',
'--count',
type=BinDataHelper.autoint,
default=0,
help='Interval to increment key value on each byte '
'iteration. Range of 0x00 - 0xff.')
parser.add_argument('-sn',
'--skip-nulls',
action='store_true',
default=False,
help='When processing the buffer, skip all null '
'(\'0x00\') bytes.')
parser.add_argument('-sk',
'--skip-key',
action='store_true',
default=False,
help='Skip bytes that match the supplied key value.')
return parser
def initialize_parser():
description = 'Process data stream and swap each byte. ' \
'Numeric values may be provided ' \
'as regular integers or hexadecimal with the \'0x\' prefix.'
parser = BinDataHelper.generic_args(description)
return parser
def initialize_parser():
description = 'Process data stream and negate each byte. ' \
'Numeric values may be provided ' \
'as regular integers or hexadecimal with the \'0x\' prefix.'
parser = BinDataHelper.generic_args(description)
parser.add_argument('-sn', '--skip-nulls',
action='store_true',
default=False,
help='When processing the buffer, skip all null '
'(\'0x00\') bytes.')
return parser
def initialize_parser():
description = 'Process data stream and rotate each byte. ' \
'Numeric values may be provided ' \
'as regular integers or hexadecimal with the \'0x\' prefix.'
parser = BinDataHelper.generic_args(description)
parser.add_argument('count',
type=BinDataHelper.autoint,
help='Number of times to perform rotation. '
'Defaults to the left.')
parser.add_argument('-r',
'--right',
action='store_true',
default=False,
help='Override default rotation direction, and '
'instead rotate bits to the right.')
return parser
def initialize_parser():
description = 'Instead of a standard single byte xor operation, ' \
'xor end byte with previous byte and continue in a ' \
'decrementing fashion until the final byte is ' \
'reached at the beginning.'
parser = BinDataHelper.generic_args(description)
parser.add_argument('-r', '--reverse',
action='store_true',
default=False,
help='Reverse the process, applying pairwise '
'at the beginning rather than the end.')
parser.add_argument('-k', '--pw-xor-key',
type=BinDataHelper.autoint,
default=0,
help='Key to use to start or end the XOR '
'(depending on if \'r\' is used). '
'Must be 0x00-0xff. Defaults to 0x00.')
return parser