debugging

authenticate_message.go

@@ -3,6 +3,7 @@ package ntlmssp
 import (
 	"bytes"
 	"crypto/rand"
+	"encoding/base64"
 	"encoding/binary"
 	"errors"
 	"time"
@@ -86,6 +87,10 @@ func ProcessChallenge(challengeMessageData []byte, user, password string) ([]byt
 		return nil, errors.New("Anonymous authentication not supported")
 	}
 
+	// debugging
+	PrintDebug("Received NTLM Type 2 Challenge: %s", base64.StdEncoding.EncodeToString(challengeMessageData))
+	DecodeNTLMMessage(challengeMessageData)
+
 	var cm challengeMessage
 	if err := cm.UnmarshalBinary(challengeMessageData); err != nil {
 		PrintDebug("Failed to unmarshal challenge data")
@@ -119,7 +124,7 @@ func ProcessChallenge(challengeMessageData []byte, user, password string) ([]byt
 	rand.Reader.Read(clientChallenge)
 
 	ntlmV2Hash := getNtlmV2Hash(password, user, cm.TargetName)
-	PrintDebug("NTLM V2 hash '%s'", ntlmV2Hash)
+	PrintDebug("NTLM V2 hash '%s'", base64.StdEncoding.EncodeToString(ntlmV2Hash))
 
 	am.NtChallengeResponse = computeNtlmV2Response(ntlmV2Hash,
 		cm.ServerChallenge[:], clientChallenge, timestamp, cm.TargetInfoRaw)

negotiator.go

@@ -123,8 +123,8 @@ func (l Negotiator) RoundTrip(req *http.Request) (res *http.Response, err error)
 		}
 
 		// debugging
-		PrintDebug("Received NTLM Type 2 Challenge: %s", base64.StdEncoding.EncodeToString(challengeMessage))
-		DecodeNTLMMessage(challengeMessage)
+		//PrintDebug("Received NTLM Type 2 Challenge: %s", base64.StdEncoding.EncodeToString(challengeMessage))
+		//DecodeNTLMMessage(challengeMessage)
 
 		if !(resauth.IsNegotiate() || resauth.IsNTLM()) || len(challengeMessage) == 0 {
 			// Negotiation failed, let client deal with response

nlmp.go

@@ -10,8 +10,9 @@ package ntlmssp
 import (
 	"crypto/hmac"
 	"crypto/md5"
-	"golang.org/x/crypto/md4"
 	"strings"
+
+	"golang.org/x/crypto/md4"
 )
 
 func getNtlmV2Hash(password, username, target string) []byte {
@@ -28,13 +29,20 @@ func computeNtlmV2Response(ntlmV2Hash, serverChallenge, clientChallenge,
 	timestamp, targetInfo []byte) []byte {
 
 	temp := []byte{1, 1, 0, 0, 0, 0, 0, 0}
+	PrintDebug("NTLMv2 response", temp)
 	temp = append(temp, timestamp...)
+	PrintDebug("NTLMv2 response", temp)
 	temp = append(temp, clientChallenge...)
+	PrintDebug("NTLMv2 response", temp)
 	temp = append(temp, 0, 0, 0, 0)
+	PrintDebug("NTLMv2 response", temp)
 	temp = append(temp, targetInfo...)
+	PrintDebug("NTLMv2 response", temp)
 	temp = append(temp, 0, 0, 0, 0)
+	PrintDebug("NTLMv2 response", temp)
 
 	NTProofStr := hmacMd5(ntlmV2Hash, serverChallenge, temp)
+	PrintDebug("Proof string", NTProofStr)
 	return append(NTProofStr, temp...)
 }