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removed addiontional RR on SRV answers

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lgandx 2021-04-14 02:39:46 -03:00
parent 1271b8e179
commit 027e6b95c3
1 changed files with 2 additions and 18 deletions
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20
packets.py
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@ -101,7 +101,7 @@ class DNS_SRV_Ans(Packet):
("Question", "\x00\x01"),
("AnswerRRS", "\x00\x01"),
("AuthorityRRS", "\x00\x00"),
("AdditionalRRS", "\x00\x01"),
("AdditionalRRS", "\x00\x00"),
("QuestionName", ""),
("QuestionNameNull", "\x00"),
("Type", "\x00\x21"),#srv
@ -121,13 +121,6 @@ class DNS_SRV_Ans(Packet):
("TargetLenSuff2", ""),
("TargetSuffix2", ""),
("TargetNull", "\x00"),
("AnswerAPointer", "\xc0"),
("AnswerAPtrOffset", ""),
("Type2", "\x00\x01"),#A record.
("Class2", "\x00\x01"),
("TTL2", "\x00\x00\x00\x1e"), #30 secs, don't mess with their cache for too long..
("IPLen", "\x00\x04"),
("IP", "\x00\x00\x00\x00"),
])
def calculate(self,data):
@ -154,21 +147,13 @@ class DNS_SRV_Ans(Packet):
#Our answer len..
self.fields["RecordLen"] = StructPython2or3(">h",CalcLen)
#Where is Answer A Pointer...
CalcRROffset= self.fields["QuestionName"]+self.fields["QuestionNameNull"]+self.fields["Type"]+self.fields["Class"]+CalcLen
self.fields["AnswerAPtrOffset"] = StructWithLenPython2or3("B",len(CalcRROffset)-4)
#for now we support ldap and kerberos...
if "ldap" in DNSName:
self.fields["Port"] = StructWithLenPython2or3(">h", 389)
if "kerberos" in DNSName:
self.fields["Port"] = StructWithLenPython2or3(">h", 88)
#Last but not least... we provide our IP, so computers can enjoy our services.
self.fields["IP"] = RespondWithIPAton()
self.fields["IPLen"] = StructPython2or3(">h",self.fields["IP"])
# LLMNR Answer Packet
class LLMNR_Ans(Packet):
fields = OrderedDict([
@ -1917,4 +1902,3 @@ class RDPNTLMChallengeAnswer(Packet):
self.fields["NTLMSSPNTLMChallengeAVPairs1Len"] = StructWithLenPython2or3("<h", len(str(self.fields["NTLMSSPNTLMChallengeAVPairs1UnicodeStr"])))
self.fields["NTLMSSPNTLMChallengeAVPairsLen"] = StructWithLenPython2or3("<h", len(str(self.fields["NTLMSSPNTLMChallengeAVPairsUnicodeStr"])))