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satoriHTTP.py
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satoriHTTP.py
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import untangle
import satoriCommon
from pathlib import Path
from datetime import datetime
from pypacker.layer12 import ethernet
from pypacker.layer3 import ip
# grab the latest fingerprint files:
# wget chatteronthewire.org/download/updates/satori/fingerprints/tcp.xml -O tcp.xml
#
# looking for new fingerprints
# python3 satori.py > output.txt
# cat output.txt | awk -F';' '{print $3, $4, $5, $6, $7}' | sort -u > output2.txt
# cat output.txt | awk -F';' '{print $5";"$6";"$7}' | sort -u > output2.txt
#
def version():
dateReleased='satoriHTTP.py - 2024-04-06'
print(dateReleased)
def httpServerProcess(pkt, layer, ts, serverExactList, serverPartialList):
if layer == 'eth':
src_mac = pkt[ethernet.Ethernet].src_s
else:
#fake filler mac for all the others that don't have it, may have to add some elif above
src_mac = '00:00:00:00:00:00'
ip4 = pkt.upper_layer
tcp1 = pkt.upper_layer.upper_layer
http1 = pkt.upper_layer.upper_layer.upper_layer
timeStamp = datetime.utcfromtimestamp(ts).isoformat()
hdrServer = ''
bodyServer = ''
try:
if (http1.hdr != None) and (http1.hdr):
hdr = dict(http1.hdr)
hdrServer = hdr[b'Server'].decode("utf-8", "strict")
if (http1.body_bytes):
body = http1.body_bytes.decode("utf-8", "strict")
i = body.find("Server: ")
if i > 1:
v = body[i:]
i = v.find("\n")
v = v[:i]
i = v.find(":")
bodyServer = v[i+1:].strip()
except Exception as e:
pass
fingerprintHdrServer = None
fingerprintBodyServer = None
if (hdrServer != ''):
httpServerFingerprint = fingerprintLookup(serverExactList, serverPartialList, hdrServer)
#not ideal but converting any ; to | for parsing reasons!
# changedUserAgent = hdrUserAgent.replace(';', '|')
fingerprintHdrServer = ip4.src_s + ';' + src_mac + ';HTTPSERVER;' + hdrServer + ';' + httpServerFingerprint
if (bodyServer != ''):
httpServerFingerprint = fingerprintLookup(serverExactList, serverPartialList, bodyServer)
#not ideal but converting any ; to | for parsing reasons!
# changedUserAgent = bodyUserAgent.replace(';', '|')
fingerprintBodyServer = ip4.src_s + ';' + src_mac + ';HTTPSERVER;' + bodyServer + ';' + httpServerFingerprint
return [timeStamp, fingerprintHdrServer, fingerprintBodyServer]
def httpUserAgentProcess(pkt, layer, ts, useragentExactList, useragentPartialList):
if layer == 'eth':
src_mac = pkt[ethernet.Ethernet].src_s
else:
#fake filler mac for all the others that don't have it, may have to add some elif above
src_mac = '00:00:00:00:00:00'
ip4 = pkt.upper_layer
tcp1 = pkt.upper_layer.upper_layer
http1 = pkt.upper_layer.upper_layer.upper_layer
timeStamp = datetime.utcfromtimestamp(ts).isoformat()
hdrUserAgent = ''
bodyUserAgent = ''
try:
if (http1.hdr != None) and (http1.hdr):
hdr = dict(http1.hdr)
hdrUserAgent = hdr[b'User-Agent'].decode("utf-8", "strict")
if (http1.body_bytes):
body = http1.body_bytes.decode("utf-8", "strict")
i = body.find("User-Agent: ")
if i > 1:
v = body[i:]
i = v.find("\n")
v = v[:i]
i = v.find(":")
bodyUserAgent = v[i+1:].strip()
except Exception as e:
pass
fingerprintHdrUserAgent = None
fingerprintBodyUserAgent = None
if (hdrUserAgent != ''):
httpUserAgentFingerprint = fingerprintLookup(useragentExactList, useragentPartialList, hdrUserAgent)
#not ideal but converting any ; to | for parsing reasons!
changedUserAgent = hdrUserAgent.replace(';', '|').replace("\n", "").replace("\r", "").strip()
fingerprintHdrUserAgent = ip4.src_s + ';' + src_mac + ';USERAGENT;' + changedUserAgent + ';' + httpUserAgentFingerprint
if (bodyUserAgent != ''):
httpUserAgentFingerprint = fingerprintLookup(useragentExactList, useragentPartialList, bodyUserAgent)
#not ideal but converting any ; to | for parsing reasons!
changedUserAgent = bodyUserAgent.replace(';', '|').replace("\n", "").replace("\r", "").strip()
fingerprintBodyUserAgent = ip4.src_s + ';' + src_mac + ';USERAGENT;' + changedUserAgent + ';' + httpUserAgentFingerprint
return [timeStamp, fingerprintHdrUserAgent, fingerprintBodyUserAgent]
def BuildHTTPServerFingerprintFiles():
# converting from the xml format to a more flat format that will hopefully be faster than walking the entire xml every FP lookup
serverExactList = {}
serverPartialList = {}
satoriPath = str(Path(__file__).resolve().parent)
obj = untangle.parse(satoriPath + '/fingerprints/web.xml')
fingerprintsCount = len(obj.WEBSERVER.fingerprints)
for x in range(0,fingerprintsCount):
os = obj.WEBSERVER.fingerprints.fingerprint[x]['name']
testsCount = len(obj.WEBSERVER.fingerprints.fingerprint[x].webserver_tests)
test = {}
for y in range(0,testsCount):
test = obj.WEBSERVER.fingerprints.fingerprint[x].webserver_tests.test[y]
if test is None: #if testsCount = 1, then untangle doesn't allow us to iterate through it
test = obj.WEBSERVER.fingerprints.fingerprint[x].webserver_tests.test
matchtype = test['matchtype']
webserver = test['webserver']
weight = test['weight']
if matchtype == 'exact':
if webserver in serverExactList:
oldValue = serverExactList.get(webserver)
serverExactList[webserver] = oldValue + '|' + os + ':' + weight
else:
serverExactList[webserver] = os + ':' + weight
else:
if webserver in serverPartialList:
oldValue = serverPartialList.get(webserver)
serverPartialList[webserver] = oldValue + '|' + os + ':' + weight
else:
serverPartialList[webserver] = os + ':' + weight
return [serverExactList, serverPartialList]
def BuildHTTPUserAgentFingerprintFiles():
# converting from the xml format to a more flat format that will hopefully be faster than walking the entire xml every FP lookup
useragentExactList = {}
useragentPartialList = {}
satoriPath = str(Path(__file__).resolve().parent)
obj = untangle.parse(satoriPath + '/fingerprints/webuseragent.xml')
fingerprintsCount = len(obj.WEBUSERAGENT.fingerprints)
for x in range(0,fingerprintsCount):
os = obj.WEBUSERAGENT.fingerprints.fingerprint[x]['name']
testsCount = len(obj.WEBUSERAGENT.fingerprints.fingerprint[x].webuseragent_tests)
test = {}
for y in range(0,testsCount):
test = obj.WEBUSERAGENT.fingerprints.fingerprint[x].webuseragent_tests.test[y]
if test is None: #if testsCount = 1, then untangle doesn't allow us to iterate through it
test = obj.WEBUSERAGENT.fingerprints.fingerprint[x].webuseragent_tests.test
matchtype = test['matchtype']
webuseragent = test['webuseragent']
weight = test['weight']
if matchtype == 'exact':
if webuseragent in useragentExactList:
oldValue = useragentExactList.get(webuseragent)
useragentExactList[webuseragent] = oldValue + '|' + os + ':' + weight
else:
useragentExactList[webuseragent] = os + ':' + weight
else:
if webuseragent in useragentPartialList:
oldValue = useragentPartialList.get(webuseragent)
useragentPartialList[webuseragent] = oldValue + '|' + os + ':' + weight
else:
useragentPartialList[webuseragent] = os + ':' + weight
return [useragentExactList, useragentPartialList]
def fingerprintLookup(exactList, partialList, value):
#same as DHCP one, may be able to look at combining in the future?
exactValue = ''
partialValue = ''
if value in exactList:
exactValue = exactList.get(value)
for key, val in partialList.items():
if value.find(key) > -1:
partialValue = partialValue + '|' + val
if partialValue.startswith('|'):
partialValue = partialValue[1:]
if partialValue.endswith('|'):
partialValue = partialValue[:-1]
fingerprint = exactValue + '|' + partialValue
if fingerprint.startswith('|'):
fingerprint = fingerprint[1:]
if fingerprint.endswith('|'):
fingerprint = fingerprint[:-1]
fingerprint = satoriCommon.sortFingerprint(fingerprint)
return fingerprint