Update S4U.cs

Fix substring issue with /opsec flag
aHlo666 · Aug 15, 2023 · f4c2b6e · f4c2b6e
1 parent 9241312
commit f4c2b6e
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/Rubeus/lib/S4U.cs b/Rubeus/lib/S4U.cs
@@ -158,7 +158,7 @@ private static void S4U2Proxy(KRB_CRED kirbi, string targetUser, string targetSP
                 string targetHostName;
                 if (parts.Length > 1)
                 {
-                    targetHostName = parts[1].Substring(0, parts[1].IndexOf('.')).ToUpper();
+                    targetHostName = parts[1].Split('.')[0].ToUpper();
                 }
                 else
                 {