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PAC.py
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PAC.py
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#!/usr/local/bin/python2 -tt
import struct
import collections
from abc import ABCMeta, abstractmethod
#from datetime import datetime,timedelta
import datetime
import math
def BytesToTime(b):
# The FILETIME structure is a 64-bit value that represents the number of
# 100-nanosecond intervals that have elapsed since January 1, 1601 (UTC).
mftime = struct.unpack('<Q', b)[0]
if mftime == 0x7fffffffffffffff:
return None
else:
microseconds = struct.unpack('<Q', b)[0] / 10.0
nanoseconds = (struct.unpack('<Q', b)[0] % 10000000) * 100
dt = datetime.datetime(1601,1,1) + datetime.timedelta(microseconds=microseconds)
dtn = datetimenano(dt, nanosecond=nanoseconds)
return dtn
def TimeToBytes(time):
if time == None:
return '\xff\xff\xff\xff\xff\xff\xff\x7f' # 0x7fffffffffffffff LE
else:
td = time - datetime.datetime(1601,1,1)
#seconds = math.floor(td.total_seconds())
hundredsofnano = long(math.floor(td.total_seconds()) * 10000000)
if hasattr(time, 'nanosecond'):
hundredsofnano += long(time.nanosecond / 100)
else:
hundredsofnano += long(time.microseconds * 10)
return struct.pack('<Q', hundredsofnano)
'''
if hasattr(time, 'nanosecond'):
#microseconds = ((td.total_seconds() * 1000000) + td.microseconds)
#replace microseconds for nanoseconds
#microseconds = microseconds - time.microsecond
#nanoseconds = microseconds * 1000 + time.nanoseconds
nanoseconds = ((td.total_seconds() * 1000000000) + time.nanosecond)
print 'seconds %i' % (math.floor(td.total_seconds()))
print 'nanoseconds %i' % time.nanosecond
return struct.pack('<Q', nanoseconds)
hundredsofnano = nanoseconds / 100
else:
#microseconds = ((td.total_seconds() * 1000000) + td.microseconds) * 10
microseconds = ((td.total_seconds() * 1000000) + td.microseconds)
hundredsofnano = microseconds * 10
print '%15f' % hundredsofnano
return struct.pack('<Q', hundredsofnano)
'''
def PrettyTime(time):
if time == None:
return 'Infinity'
else:
return str(time)
def AlignedString(s, alignment = 4):
return s + '\x00' * ((alignment - (len(s) % alignment)) % alignment)
class datetimenano(datetime.datetime):
def __new__(cls, *args, **kwargs):
if len(args) > 0 and type(args[0]) == datetime.datetime:
dt = args[0]
#dt = datetime.datetime.__new__(cls, dt.year, dt.month, dt.day, dt.hour, dt.minute, dt.second, dt.microsecond, dt.tzinfo)
if 'nanosecond' in kwargs:
#setattr(dt, 'nanoseconds', args[0].tzinfo)
dt = datetime.datetime.__new__(cls, dt.year, dt.month, dt.day, dt.hour, dt.minute, dt.second, dt.microsecond, dt.tzinfo)
setattr(dt, 'nanosecond', kwargs['nanosecond'])
else:
#setattr(dt, 'nanoseconds', 0)
dt = datetime.datetime.__new__(cls, dt.year, dt.month, dt.day, dt.hour, dt.minute, dt.second, dt.microsecond, dt.tzinfo, nanoseconds=0)
setattr(dt, 'nanosecond', 0)
return dt
else:
dt = super(datetimenano, cls).__new__(cls, *args[:8], **kwargs)
if len(args) == 9:
setattr(cls, 'nanosecond', args[8])
else:
setattr(cls, 'nanosecond', 0)
return dt
def __str__(self):
s = super(datetimenano, self).__str__()
return '%s.%09i' % (s.split('.')[0], self.nanosecond)
return s
class PacInfoStructure(object):
__metaclass__ = ABCMeta
PrettyName = 'PacInfoStructure'
Type = None
PrettyName = None
BufferSize = None
Offset = None
Data = None
def __init__(self, pac, index=0):
if input != None:
offset = 8 + 16 * index
self.Type, self.BufferSize, self.Offset = struct.unpack('<III', pac[offset:offset+12])
self.Data = pac[self.Offset:self.Offset+self.BufferSize]
def __str__(self):
return '%s (%i) Size: %i Offset: %i\nData: %s' % (self.PrettyName, self.Type, self.BufferSize, self.Offset, self.Data.encode('hex'))
#def encode(self):
# e = str(struct.pack('<III', self.Type, self.BufferSize, self.Offset)) + self.encode()
# return e
#@abstractmethod
def encode(self):
return self.Data
class PacLoginInfo(PacInfoStructure):
Version = None
ByteOrder = None
HeaderLen = None
FillBytes = None
InitialLength = None
Type = 1
PrettyName = 'Login Info'
#ReferentID = None
LogonTime = None
KickoffTime = None
PwdLastSet = None
PwdCanChange = None
PwdMustChange = None
Logoncount = None
BadpPasswordCount = None
UserRid = None
GroupRid = None
AccountName = None
DisplayName = None
LogonScript = None
ProfilePath = None
HomeDir = None
DirDrive = None
#LogonCount
class Referent(object):
Length = None
Size = None
ReferentID = None
Groups = []
def __init__(self, data):
self.Length = struct.unpack('<H', data[0:2])[0]
self.Size = struct.unpack('<H', data[2:4])[0]
self.ReferentID = struct.unpack('<L', data[4:8])[0]
def __str__(self):
return 'Length: %i Size: %i ReferentID: 0x%08x' % (self.Length, self.Size, self.ReferentID)
@property
def PaddLen(self):
# must bye 4 byte aligned
return (4 - (self.Length % 4)) % 4
def __init__(self, pac, index=0):
super(self.__class__, self).__init__(pac, index)
if self.Type != 1:
raise ValueError('PAC Information Structure is not Login Info')
#self.MesHeader = self.Data[0:16]
#MessageHeader
self.Version, self.ByteOrder, self.HeaderLen = struct.unpack('<BBH', self.Data[0:4])
self.FillBytes = self.Data[4:8]
self.InitialLength = struct.unpack('<Q', self.Data[8:16])[0]
#self.ReferentD = self.Data[16:20]
self.LogonTime = BytesToTime(self.Data[20:28])
#print 'Logon Time: %s' % PrettyTime(self.LogonTime)
self.LogoffTime = BytesToTime(self.Data[28:36])
#print 'Logoff Time: %s' % PrettyTime(self.LogoffTime)
self.KickoffTime = BytesToTime(self.Data[36:44])
#print 'Kickoff Time: %s' % PrettyTime(self.KickoffTime)
self.PwdLastSet = BytesToTime(self.Data[44:52])
#print 'PwdLastSet Time: %s' % PrettyTime(self.PwdLastSet)
self.PwdCanChange = BytesToTime(self.Data[52:60])
#print 'PwdCanChange Time: %s' % PrettyTime(self.PwdCanChange)
self.PwdMustChange = BytesToTime(self.Data[60:68])
#print 'PwdMustChange Time: %s' % PrettyTime(self.PwdMustChange)
accountnameref = self.Referent(self.Data[68:76])
# print 'accountnameref %s' % accountnameref
fullnameref = self.Referent(self.Data[76:84])
#print fullnameref
logonscriptref = self.Referent(self.Data[84:92])
#print logonscriptref
profilepathref = self.Referent(self.Data[92:100])
#print profilepathref
homedirref = self.Referent(self.Data[100:108])
#print homedirref
dirdriveref = self.Referent(self.Data[108:116])
#print dirdriveref
self.Logoncount, self.BadpPasswordCount, self.UserRid, self.GroupRid, numrids = struct.unpack('<HHLLL', self.Data[116:132]) #[0]
DATAOFFSET = 236
# TODO: Decode and re-encode this
self.extrajunk = self.Data[132:DATAOFFSET]
offset = DATAOFFSET # points to first data item
offset += 4 * 3 # max count, offset, actual count
self.AccountName = self.Data[offset:offset+accountnameref.Length]#.decode('utf-8')
#print '%i %s' % (offset, self.AccountName)
offset += accountnameref.Length + accountnameref.PaddLen
offset += 4 * 3 # max count, offset, actual count
self.DisplayName = self.Data[offset:offset+fullnameref.Length]#.decode('utf-8')
#print '%i %s' % (offset, self.DisplayName)
offset += fullnameref.Length + fullnameref.PaddLen
offset += 4 * 3 # max count, offset, actual count
self.LogonScript = self.Data[offset:offset+logonscriptref.Length]
#print '%i %s' % (offset, self.LogonScript)
offset += logonscriptref.Length + logonscriptref.PaddLen
offset += 4 * 3 # max count, offset, actual count
self.ProfilePath = self.Data[offset:offset+profilepathref.Length]
#print '%i %s' % (offset, self.ProfilePath)
offset += profilepathref.Length + logonscriptref.PaddLen
offset += 4 * 3 # max count, offset, actual count
self.HomeDir = self.Data[offset:offset+homedirref.Length]
#print '%i %s' % (offset, self.HomeDir)
offset += homedirref.Length + homedirref.PaddLen
offset += 4 * 3 # max count, offset, actual count
self.DirDrive = self.Data[offset:offset+dirdriveref.Length]
#print '%i %s' % (offset, self.DirDrive)
offset += homedirref.Length + dirdriveref.PaddLen
#outtest = self.AccountName
#print '!!!! AN Length: %i --%s-- %s' % (len(outtest), outtest, outtest.encode('hex'))
#outtest = self.DisplayName #fullname
#print '!!!! FN Length: %i --%s-- %s' % (len(outtest), outtest, outtest.encode('hex'))
#outtest = self.LogonScript
#print '!!!! LS Length: %i --%s-- %s' % (len(outtest), outtest, outtest.encode('hex'))
#outtest = self.ProfilePath
#print '!!!! PP Length: %i --%s-- %s' % (len(outtest), outtest, outtest.encode('hex'))
#outtest = self.HomeDir
#print '!!!! HD Length: %i --%s-- %s' % (len(outtest), outtest, outtest.encode('hex'))
#outtest = self.DirDrive
#print '!!!! DD Length: %i --%s-- %s' % (len(outtest), outtest, outtest.encode('hex'))
maxridcount = struct.unpack('<L', self.Data[offset:offset+4])[0]
#print 'maxrid', maxridcount
offset += 4
grouprids = []
for i in range(numrids):
#print self.Data[offset:offset+12].encode('hex')
grouprids.append(struct.unpack('<L', self.Data[offset:offset+4])[0])
offset += 8
self.Groups = grouprids
# TODO: Decode and re-encode this
self.extrajunk2 = self.Data[offset:]
def encode(self):
header = struct.pack('<BBH', self.Version, self.ByteOrder, self.HeaderLen) + \
self.FillBytes
# struct.pack('<QL', self.InitialLength,
e = struct.pack('<L', 0x00020000) + \
TimeToBytes(self.LogonTime) + \
TimeToBytes(self.LogoffTime) + \
TimeToBytes(self.KickoffTime) + \
TimeToBytes(self.PwdLastSet) + \
TimeToBytes(self.PwdCanChange) + \
TimeToBytes(self.PwdMustChange) + \
struct.pack('<HHL', len(self.AccountName), len(self.AccountName), 0x00020004) + \
struct.pack('<HHL', len(self.DisplayName), len(self.DisplayName), 0x00020008) + \
struct.pack('<HHL', len(self.LogonScript), len(self.LogonScript), 0x0002000c) + \
struct.pack('<HHL', len(self.ProfilePath), len(self.ProfilePath), 0x00020010) + \
struct.pack('<HHL', len(self.HomeDir), len(self.HomeDir), 0x00020014) + \
struct.pack('<HHL', len(self.DirDrive), len(self.DirDrive), 0x00020018) + \
struct.pack('<HHLLL', self.Logoncount, self.BadpPasswordCount, self.UserRid, self.GroupRid, len(self.Groups))
# TODO: Decode and re-encode this
e += self.extrajunk
e +=struct.pack('<LLL', len(self.AccountName)/2, 0, len(self.AccountName)/2) + AlignedString(self.AccountName) + \
struct.pack('<LLL', len(self.DisplayName)/2, 0, len(self.DisplayName)/2) + AlignedString(self.DisplayName) + \
struct.pack('<LLL', len(self.LogonScript)/2, 0, len(self.LogonScript)/2) + AlignedString(self.LogonScript) + \
struct.pack('<LLL', len(self.ProfilePath)/2, 0, len(self.ProfilePath)/2) + AlignedString(self.ProfilePath) + \
struct.pack('<LLL', len(self.HomeDir)/2, 0, len(self.HomeDir)/2) + AlignedString(self.HomeDir) + \
struct.pack('<LLL', len(self.DirDrive)/2, 0, len(self.DirDrive)/2) + AlignedString(self.DirDrive)
# Groups
e += struct.pack('<L', len(self.Groups))
for g in self.Groups:
e += struct.pack('<LL', g, 7)
# TODO: Decode and re-encode this
e += self.extrajunk2
header += struct.pack('<Q', len(e))
#print 'LogInInfoLen %i' % len(e)
#e += struct.pack('<LLL', len(self.AccountName), 0, len(self.AccountName)) #+ AlignedString(self.AccountName)
return header + e
class PacClientInfo(PacInfoStructure):
Type = 10
PrettyName = 'Client Info'
ClientID = None
Name = None
def __init__(self, pac, index=0):
super(self.__class__, self).__init__(pac, index)
if self.Type != 10:
raise ValueError('PAC Information Structure is not Client Info')
self.ClientID = BytesToTime(self.Data[:8])
namelen = struct.unpack('<H', self.Data[8:10])[0]
self.Name = self.Data[10:10+namelen].encode('utf-8')
def __str__(self):
return '%s (%i) ClientID: %s Name (%i): %s' % (self.PrettyName, self.Type, str(self.ClientID), len(self.Name), self.Name)
def encode(self):
return TimeToBytes(self.ClientID) + struct.pack('<H', len(self.Name)) + self.Name
class PacUpnDnsInfo(PacInfoStructure):
Type = 12
PrettyName = 'UPN DNS Info'
UPNName = None
DNSName = None
Flags = None
def __init__(self, pac, index=0):
super(self.__class__, self).__init__(pac, index)
if self.Type != 12:
raise ValueError('PAC Information Structure is not UPN DNS Info')
upnlen = struct.unpack('<H', self.Data[:2])[0]
upnoffset = struct.unpack('<H', self.Data[2:4])[0]
dnslen = struct.unpack('<H', self.Data[4:6])[0]
dnsoffset = struct.unpack('<H', self.Data[6:8])[0]
self.Flags = self.Data[8:12] # screw decoding this
#print upnlen, upnoffset, dnslen, dnsoffset
self.UPNName = self.Data[upnoffset:upnoffset+upnlen].decode('utf-8')
self.DNSName = self.Data[dnsoffset:dnsoffset+dnslen].decode('utf-8')
def __str__(self):
return '%s (%i) Flags: %s UPN Name: %s DNS Name: %s' % (self.PrettyName, self.Type, '%0.8X' % struct.unpack('<L', self.Flags)[0], self.UPNName, self.DNSName)
def encode(self):
# seems to add lots of \x00\x00\x00\x00 at the end of strings
return struct.pack('<HHHH', \
# UPN Len \
len(self.UPNName), \
# UPN Offset \
16, \
# DNS Len \
len(self.DNSName), \
# DNS Offset \
20+len(AlignedString(self.UPNName))) + \
self.Flags + '\x00\x00\x00\x00' + str(AlignedString(self.UPNName)) + '\x00\x00\x00\x00' + str(AlignedString(self.DNSName))
class PacServerChecksum(PacInfoStructure):
Type = 6
PrettyName = 'Server Checksum'
SigType = None
SigVal = None
def __init__(self, pac, index=0):
super(self.__class__, self).__init__(pac, index)
if self.Type != 6:
raise ValueError('PAC Information Structure is not Server Checksum')
self.SigType = struct.unpack('<l', self.Data[:4])[0]
self.SigVal = self.Data[4:]
def __str__(self):
return '%s (%i) Size: %i Sig Type: %i SigVal: %s' % (self.PrettyName, self.Type, len(self.encode()), self.SigType, self.SigVal.encode('hex'))
def encode(self):
#return self.Data
return struct.pack('<l', self.SigType) + self.SigVal
class PacKdcChecksum(PacInfoStructure):
Type = 7
PrettyName = 'Privsvr Checksum'
SigType = None
SigVal = None
def __init__(self, pac, index=0):
super(self.__class__, self).__init__(pac, index)
if self.Type != 7:
raise ValueError('PAC Information Structure is not KDC (Privsvr) Checksum')
self.SigType = struct.unpack('<l', self.Data[:4])[0]
self.SigVal = self.Data[4:]
def __str__(self):
return '%s (%i) Size: %i Sig Type: %i SigVal: %s' % (self.PrettyName, self.Type, len(self.encode()), self.SigType, self.SigVal.encode('hex'))
def encode(self):
#return self.Data
return struct.pack('<l', self.SigType) + self.SigVal
class PacGenericInfo(PacInfoStructure):
# Just in case there are other structures besides the original 5
Type = None
def __init__(self, pac, index=0):
super(self.__class__, self).__init__(pac, index)
def encode(self):
#return self.Data
super(self.__class__, self).__init__()
class PAC(object):
_pac=None
_loaded = False
Version = 0
PacLoginInfo = None
PacClientInfo = None
PacUpnDnsInfo = None
PacServerChecksum = None
PacKdcChecksum = None
def __init__(self, pac=None):
if pac == None:
_pac = None
_loaded = False
else:
self.load(pac)
def __str__(self):
retval = str(self.PacLoginInfo)
retval += str(self.PacClientInfo)
retval += str(self.PacUpnDnsInfo)
retval += str(self.PacServerChecksum)
retval += str(self.PacKdcChecksum)
return retval
def load(self, pac):
numentries, self.Version = struct.unpack('<II', pac[:8])
#pacinfostructures = {}
pacinfostructures = collections.defaultdict(lambda: PacGenericInfo)
for cls in PacInfoStructure.__subclasses__():
pacinfostructures[cls.Type] = cls
for i in range(numentries):
# 8 - num entries (4) and version (4)
offset = 8 + 16 * i
# get the type of the chunk
typeval = struct.unpack('<L', pac[offset:offset+4])[0]
# load the right class
cls = pacinfostructures[typeval]
pis = cls(pac, i)
if pis.Type == 1:
self.PacLoginInfo = pis
elif pis.Type == 10:
self.PacClientInfo = pis
elif pis.Type == 12:
self.PacUpnDnsInfo = pis
elif pis.Type == 6:
self.PacServerChecksum = pis
elif pis.Type == 7:
self.PacKdcChecksum = pis
if pis.Data != pis.encode():
print "NO MATCH!! %s" % pis.PrettyName
cmp(pis.Data, pis.encode(), verbose=True)
#print '%s\n%s' % (pis.Data.encode('hex'), pis.encode().encode('hex'))
print '----'
def encode(self):
e = struct.pack('<LL', 5, self.Version)
# the inital offset value is always 88
# ok, so I lied. it is actually the sum of a bunch of crap that doesn't seem to change
offset = 88
alignedoffset = 88
headers = ''
payload = ''
pacstructs = [self.PacLoginInfo, self.PacClientInfo, self.PacUpnDnsInfo, self.PacServerChecksum, self.PacKdcChecksum]
for ps in pacstructs:
pse = ps.encode()
psealigned = AlignedString(pse, 8)
headers += struct.pack('<IIII', ps.Type, len(pse), offset, 0)
payload += psealigned
#print '%16s Offset: %3s Aligned Offset: %3s Length: %3s Aligned Length: %3s' % (ps.PrettyName, offset, alignedoffset, len(psed), len(AlignedString(psed, 8)))
offset += len(psealigned)
return e + headers + payload
def cmp(s1, s2, comparelen=None, verbose=False):
if not comparelen:
if len(s1) <= len(s2):
comparelen = len(s1)
else:
comparelen = len(s2)
if s1[:comparelen] == s2[:comparelen]:
if verbose:
print 'SAME %i %i' % (len(s1), len(s2))
return True
else:
if verbose:
print 'NOT SAME'
print s1[:comparelen].encode('hex')
print
print s2[:comparelen].encode('hex')
return False
def main():
#a ='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'
# xp-success
#a = '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'
# 7-success
#a = '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'
# 7-success-administrator
#a = '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'
# ram
a = '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'
a = a.decode('hex')
p = PAC(a)
print p.PacLoginInfo.GroupRid
p.PacLoginInfo.GroupRid = 77
print p.PacLoginInfo.GroupRid
#print p
p2 = p.encode()
#cmp(a, p2, None, True)
print a == p2
if __name__ == '__main__':
main()