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metatool.py
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metatool.py
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#!/usr/bin/env python
__description__ = "Tool for Metasploit"
__author__ = 'Didier Stevens'
__version__ = '0.0.3'
__date__ = '2021/03/21'
"""
Source code put in public domain by Didier Stevens, no Copyright
https://DidierStevens.com
Use at your own risk
History:
2017/08/17: start
2021/03/11: 0.0.2 added command url8, Python 3 fix
2021/03/21: 0.0.3 CS x64
Todo:
"""
import optparse
import glob
import collections
import sys
import textwrap
import gzip
import os
import re
import base64
import struct
import binascii
import time
COMMANDS = ['urluuid', 'url8']
COMMANDS_URLUUID = 0
COMMANDS_URL8 = 1
def PrintManual():
manual = '''
Manual:
This version of the tool recognizes and decodes 2 types of Metasploit URLs.
In this version the supported commands are: %s.
Example: metatool.py urluuid url.txt
Output:
URL: http://127.0.0.1:8080/4PGoVGYmx8l6F3sVI4Rc8g1wms758YNVXPczHlPobpJENARSuSHb57lFKNndzVSpivRDSi5VH2U-w-pEq_CroLcB--cNbYRroyFuaAgCyMCJDpWbws/
puid: e0f1a8546626c7c9 ('\xe0\xf1\xa8Tf&\xc7\xc9')
platform: 1 (windows)
architecture: 2 (ARCH_X64)
timestamp: 2017/08/15 18:52:53
Example: echo http://example.com/WsJH | metatool.py url8
Output:
URL: http://example.com/WsJH
path: WsJH
checksum: URI_CHECKSUM_INITW (0x5c)
''' % ', '.join(COMMANDS)
for line in manual.split('\n'):
print(textwrap.fill(line))
dArchitectures = {
0: 'nil',
1: 'ARCH_X86',
2: 'ARCH_X64',
3: 'ARCH_X64',
4: 'ARCH_MIPS',
5: 'ARCH_MIPSLE',
6: 'ARCH_MIPSBE',
7: 'ARCH_PPC',
8: 'ARCH_PPC64',
9: 'ARCH_CBEA',
10: 'ARCH_CBEA64',
11: 'ARCH_SPARC',
12: 'ARCH_ARMLE',
13: 'ARCH_ARMBE',
14: 'ARCH_CMD',
15: 'ARCH_PHP',
16: 'ARCH_TTY',
17: 'ARCH_JAVA',
18: 'ARCH_RUBY',
19: 'ARCH_DALVIK',
20: 'ARCH_PYTHON',
21: 'ARCH_NODEJS',
22: 'ARCH_FIREFOX',
23: 'ARCH_ZARCH',
24: 'ARCH_AARCH64',
25: 'ARCH_MIPS64',
26: 'ARCH_PPC64LE',
27: 'ARCH_R',
28: 'ARCH_PPCE500V2'
}
dPlatforms = {
0: 'nil',
1: 'windows',
2: 'netware',
3: 'android',
4: 'java',
5: 'ruby',
6: 'linux',
7: 'cisco',
8: 'solaris',
9: 'osx',
10: 'bsd',
11: 'openbsd',
12: 'bsdi',
13: 'netbsd',
14: 'freebsd',
15: 'aix',
16: 'hpux',
17: 'irix',
18: 'unix',
19: 'php',
20: 'js',
21: 'python',
22: 'nodejs',
23: 'firefox',
24: 'r',
25: 'apple_ios',
26: 'juniper',
27: 'unifi',
28: 'brocade',
29: 'mikrotik',
30: 'arista'
}
UNDEFINED = 'undefined'
def File2Strings(filename):
try:
if filename == '':
f = sys.stdin
else:
f = open(filename, 'r')
except:
return None
try:
return map(lambda line:line.rstrip('\n'), f.readlines())
except:
return None
finally:
if f != sys.stdin:
f.close()
def ProcessAt(argument):
if argument.startswith('@'):
strings = File2Strings(argument[1:])
if strings == None:
raise Exception('Error reading %s' % argument)
else:
return strings
else:
return [argument]
# CIC: Call If Callable
def CIC(expression):
if callable(expression):
return expression()
else:
return expression
# IFF: IF Function
def IFF(expression, valueTrue, valueFalse):
if expression:
return CIC(valueTrue)
else:
return CIC(valueFalse)
def FormatTime(epoch=None):
if epoch == None:
epoch = time.time()
return '%04d/%02d/%02d %02d:%02d:%02d' % time.gmtime(epoch)[0:6]
class cOutput():
def __init__(self, filename=None):
self.filename = filename
if self.filename and self.filename != '':
self.f = open(self.filename, 'w')
else:
self.f = None
def Line(self, line):
if self.f:
self.f.write(line + '\n')
else:
print(line)
# sys.stdout.flush()
def Close(self):
if self.f:
self.f.close()
self.f = None
def ExpandFilenameArguments(filenames):
return list(collections.OrderedDict.fromkeys(sum(map(glob.glob, sum(map(ProcessAt, filenames), [])), [])))
class cOutputResult():
def __init__(self, options):
if options.output:
self.oOutput = cOutput(options.output)
else:
self.oOutput = cOutput()
self.options = options
def Line(self, line):
self.oOutput.Line(line)
def Close(self):
self.oOutput.Close()
def ProcessFile(fIn, fullread):
if fullread:
yield fIn.read()
else:
for line in fIn:
yield line.strip('\n\r')
def Checksum8(data):
return sum(map(ord, data))
def Checksum8LSB(data):
dMetasploitConstants = {
92: 'URI_CHECKSUM_INITW / CS x86',
93: 'CS x64',
80: 'URI_CHECKSUM_INITP',
88: 'URI_CHECKSUM_INITJ',
98: 'URI_CHECKSUM_CONN',
95: 'URI_CHECKSUM_INIT_CONN',
}
value = Checksum8(data) % 0x100
return (value, dMetasploitConstants.get(value, ''))
def MetatoolSingle(command, filename, oOutput, options):
if filename == '':
fIn = sys.stdin
elif os.path.splitext(filename)[1].lower() == '.gz':
fIn = gzip.GzipFile(filename, 'rb')
else:
fIn = open(filename, 'r')
oREurluuid = re.compile('(?:https?://[^/]+)?/([^/]+)/?')
oREurl8 = re.compile(r'https?://[^/]+/(.{4})\b')
format = '8sBBBBBBBB'
for line in ProcessFile(fIn, False):
if command == COMMANDS[COMMANDS_URLUUID]:
oSearch = oREurluuid.search(line)
if oSearch != None:
if len(oSearch.groups()[0]) >= 22:
try:
decoded = base64.urlsafe_b64decode(oSearch.groups()[0][0:22] + '==')
except:
continue
if len(decoded) < struct.calcsize(format):
continue
puid, xor1, xor2, platform_xored, architecture_xored, ts1_xored, ts2_xored, ts3_xored, ts4_xored = struct.unpack(format, decoded)
platform = platform_xored ^ xor1
platformName = dPlatforms.get(platform, UNDEFINED)
if platformName == UNDEFINED and not options.force:
continue
architecture = architecture_xored ^ xor2
architectureName = dArchitectures.get(architecture, UNDEFINED)
if architectureName == UNDEFINED and not options.force:
continue
timestamp = struct.unpack('>I', bytes([ts1_xored ^ xor1, ts2_xored ^ xor2, ts3_xored ^ xor1, ts4_xored ^ xor2]))[0]
oOutput.Line('URL: %s' % (oSearch.string))
oOutput.Line('puid: %s (%s)' % (binascii.b2a_hex(puid), repr(puid)))
oOutput.Line('platform: %d (%s)' % (platform, platformName))
oOutput.Line('architecture: %d (%s)' % (architecture, architectureName))
oOutput.Line('timestamp: %s' % (FormatTime(timestamp)))
elif command == COMMANDS[COMMANDS_URL8]:
oSearch = oREurl8.search(line)
if oSearch != None:
path = oSearch.groups()[0]
checksumValue, checksumConstant = Checksum8LSB(path)
if checksumConstant != '' or options.force:
oOutput.Line('URL: %s' % (oSearch.group()))
oOutput.Line('path: %s' % path)
oOutput.Line('checksum: %s (0x%02x)' % (checksumConstant, checksumValue))
if fIn != sys.stdin and type(fIn) != list:
fIn.close()
def Metatool(command, filenames, options):
if not command in COMMANDS:
print('Unsupported command: %s' % command)
print('Valid commands: %s' % ' '.join(COMMANDS))
return
oOutput = cOutputResult(options)
for filename in filenames:
MetatoolSingle(command, filename, oOutput, options)
oOutput.Close()
def Main():
moredesc = '''
Arguments:
@file: process each file listed in the text file specified
wildcards are supported
Source code put in the public domain by Didier Stevens, no Copyright
Use at your own risk
https://DidierStevens.com'''
oParser = optparse.OptionParser(usage='usage: %prog [options] command [[@]file ...]\n' + __description__ + moredesc, version='%prog ' + __version__)
oParser.add_option('-m', '--man', action='store_true', default=False, help='Print manual')
oParser.add_option('-o', '--output', type=str, default='', help='Output to file')
oParser.add_option('-f', '--force', action='store_true', default=False, help='Force output for unrecognized data')
(options, args) = oParser.parse_args()
if options.man:
oParser.print_help()
PrintManual()
return
if len(args) == 0:
oParser.print_help()
return
elif len(args) == 1:
Metatool(args[0], [''], options)
else:
Metatool(args[0], ExpandFilenameArguments(args[1:]), options)
if __name__ == '__main__':
Main()