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121 lines
3.4 KiB
Python
Executable File
121 lines
3.4 KiB
Python
Executable File
#!/usr/bin/env python
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"""
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safe2bin.py - Simple safe(hex) to binary format converter
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Copyright (c) 2006-2012 sqlmap developers (http://sqlmap.org/)
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See the file 'doc/COPYING' for copying permission
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"""
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import binascii
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import re
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import string
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import os
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import sys
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from optparse import OptionError
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from optparse import OptionParser
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# Regex used for recognition of hex encoded characters
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HEX_ENCODED_CHAR_REGEX = r"(?P<result>\\x[0-9A-Fa-f]{2})"
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# Raw chars that will be safe encoded to their slash (\) representations (e.g. newline to \n)
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SAFE_ENCODE_SLASH_REPLACEMENTS = "\t\n\r\x0b\x0c"
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# Characters that don't need to be safe encoded
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SAFE_CHARS = "".join(filter(lambda x: x not in SAFE_ENCODE_SLASH_REPLACEMENTS, string.printable.replace('\\', '')))
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# String used for temporary marking of slash characters
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SLASH_MARKER = "__SLASH__"
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def safecharencode(value):
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"""
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Returns safe representation of a given basestring value
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>>> safecharencode(u'test123')
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u'test123'
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>>> safecharencode(u'test\x01\x02\xff')
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u'test\\01\\02\\03\\ff'
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"""
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retVal = value
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if isinstance(value, basestring):
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if any(_ not in SAFE_CHARS for _ in value):
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retVal = retVal.replace('\\', SLASH_MARKER)
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for char in SAFE_ENCODE_SLASH_REPLACEMENTS:
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retVal = retVal.replace(char, repr(char).strip('\''))
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retVal = retVal.replace(SLASH_MARKER, '\\\\')
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retVal = reduce(lambda x, y: x + (y if (y in string.printable or ord(y) > 255) else '\\x%02x' % ord(y)), retVal, unicode())
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elif isinstance(value, list):
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for i in xrange(len(value)):
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retVal[i] = safecharencode(value[i])
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return retVal
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def safechardecode(value):
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"""
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Reverse function to safecharencode
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"""
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retVal = value
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if isinstance(value, basestring):
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regex = re.compile(HEX_ENCODED_CHAR_REGEX)
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while True:
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match = regex.search(retVal)
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if match:
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retVal = retVal.replace(match.group("result"), unichr(ord(binascii.unhexlify(match.group("result").lstrip('\\x')))))
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else:
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break
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retVal = retVal.replace('\\\\', SLASH_MARKER)
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for char in SAFE_ENCODE_SLASH_REPLACEMENTS[::-1]:
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retVal = retVal.replace(repr(char).strip('\''), char)
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retVal = retVal.replace(SLASH_MARKER, '\\')
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elif isinstance(value, (list, tuple)):
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for i in xrange(len(value)):
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retVal[i] = safechardecode(value[i])
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return retVal
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def main():
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usage = '%s -i <input file> [-o <output file>]' % sys.argv[0]
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parser = OptionParser(usage=usage, version='0.1')
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try:
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parser.add_option('-i', dest='inputFile', help='Input file')
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parser.add_option('-o', dest='outputFile', help='Output file')
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(args, _) = parser.parse_args()
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if not args.inputFile:
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parser.error('Missing the input file, -h for help')
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except (OptionError, TypeError), e:
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parser.error(e)
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if not os.path.isfile(args.inputFile):
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print 'ERROR: the provided input file \'%s\' is not a regular file' % args.inputFile
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sys.exit(1)
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f = open(args.inputFile, 'r')
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data = f.read()
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f.close()
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if not args.outputFile:
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args.outputFile = args.inputFile + '.bin'
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f = open(args.outputFile, 'wb')
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f.write(safechardecode(data))
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f.close()
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if __name__ == '__main__':
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main()
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