Created
September 6, 2018 16:53
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Sanitizer for Nmap XML output - strips everything but port scan info and anonymizes IP addresses.
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#!/usr/bin/env python2 | |
import struct | |
import xml | |
xml.__path__ = [x for x in xml.__path__ if "_xmlplus" not in x] | |
import xml.sax | |
import xml.sax.saxutils | |
class NmapSanitizer(xml.sax.saxutils.XMLGenerator, object): | |
"""The xml.sax ContentHandler for the XML parser. Ensures only sanitized | |
elements are written back out and addresses are rewritten.""" | |
def __init__(self, f): | |
self.f = f | |
self.block = 0 | |
self.block_elements = ( | |
u"output", | |
u"script", | |
u"hostscript", | |
u"prescript", | |
u"postscript", | |
u"hostnames", | |
u"service", | |
u"os", | |
u"uptime", | |
u"tcpsequence", | |
u"ipidsequence", | |
u"tcptssequence", | |
u"trace", | |
) | |
self.targetnum = 10 << 24 | |
super(NmapSanitizer, self).__init__(f) | |
def startElement(self, name, attrs): | |
if name in self.block_elements: | |
self.block += 1 | |
if self.block > 0: | |
return | |
if name == u"address": | |
if attrs[u"addrtype"] == u"mac": | |
return | |
else: | |
attrs = dict(attrs) | |
self.targetnum += 1 | |
addr = u".".join(map(unicode, struct.unpack("BBBB", struct.pack(">I", self.targetnum)))) | |
if attrs[u"addrtype"] == u"ipv6": | |
addr = u"::ffff:" + addr | |
attrs[u"addr"] = addr | |
super(NmapSanitizer, self).startElement(name, attrs) | |
def endElement(self, name): | |
if name in self.block_elements: | |
self.block -= 1 | |
return | |
if self.block > 0: | |
return | |
super(NmapSanitizer, self).endElement(name) | |
def characters(self, content): | |
if self.block > 0: | |
return | |
super(NmapSanitizer, self).characters(content) | |
if __name__ == "__main__": | |
import sys | |
parser = xml.sax.make_parser() | |
handler = NmapSanitizer(sys.stdout) | |
parser.setContentHandler(handler) | |
try: | |
parser.parse(sys.argv[1]) | |
except xml.sax.SAXParseException, e: | |
# We expect to be processing half-completed XML files, so ignore parsing | |
# errors. | |
print >>sys.stderr, "Ignored SAXParseException: %s" % e.getMessage() |
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