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generate challenge messages

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This commit is contained in:
Conor Hunt
2012-11-10 15:15:12 -05:00
parent a9e17c39f6
commit d5082d0f01
6 changed files with 125 additions and 14 deletions
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38
src/ntlm/ntlmv2.go
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@@ -81,8 +81,42 @@ func (n *V2ServerSession) ProcessNegotiateMessage(nm *messages.Negotiate) (err e
}
func (n *V2ServerSession) GenerateChallengeMessage() (cm *messages.Challenge, err error) {
// TODO: Generate this challenge message
return
cm = new(messages.Challenge)
cm.Signature = []byte("NTLMSSP\x00")
cm.MessageType = uint32(2)
cm.TargetName,_ = messages.CreateBytePayload(make([]byte, 0))
flags := uint32(0)
flags = messages.NTLMSSP_NEGOTIATE_KEY_EXCH.Set(flags)
// NOTE: Unsetting this in order for the signatures to work
// flags = messages.NTLMSSP_NEGOTIATE_VERSION.Set(flags)
flags = messages.NTLMSSP_NEGOTIATE_EXTENDED_SESSIONSECURITY.Set(flags)
flags = messages.NTLMSSP_NEGOTIATE_TARGET_INFO.Set(flags)
flags = messages.NTLMSSP_NEGOTIATE_IDENTIFY.Set(flags)
flags = messages.NTLMSSP_NEGOTIATE_ALWAYS_SIGN.Set(flags)
flags = messages.NTLMSSP_NEGOTIATE_NTLM.Set(flags)
flags = messages.NTLMSSP_NEGOTIATE_DATAGRAM.Set(flags)
flags = messages.NTLMSSP_NEGOTIATE_SIGN.Set(flags)
flags = messages.NTLMSSP_REQUEST_TARGET.Set(flags)
flags = messages.NTLMSSP_NEGOTIATE_UNICODE.Set(flags)
cm.NegotiateFlags = flags
cm.ServerChallenge = randomBytes(8)
cm.Reserved = make([]byte, 8)
// Create the AvPairs we need
pairs := new(messages.AvPairs)
pairs.AddAvPair(messages.MsvAvNbDomainName, messages.StringToUtf16("REUTERS"))
pairs.AddAvPair(messages.MsvAvNbComputerName, messages.StringToUtf16("UKBP-CBTRMFE06"))
pairs.AddAvPair(messages.MsvAvDnsDomainName, messages.StringToUtf16("Reuters.net"))
pairs.AddAvPair(messages.MsvAvDnsComputerName, messages.StringToUtf16("ukbp-cbtrmfe06.Reuters.net"))
pairs.AddAvPair(messages.MsvAvDnsTreeName, messages.StringToUtf16("Reuters.net"))
pairs.AddAvPair(messages.MsvAvEOL, make([]byte, 0))
cm.TargetInfo = pairs
cm.TargetInfoPayloadStruct,_ = messages.CreateBytePayload(pairs.Bytes())
cm.Version = &messages.VersionStruct{ProductMajorVersion: uint8(5), ProductMinorVersion: uint8(1), ProductBuild: uint16(2600), NTLMRevisionCurrent: uint8(10)}
return cm, nil
}
func (n *V2ServerSession) ProcessAuthenticateMessage(am *messages.Authenticate) (err error) {