Example Javascript Plugin

2021-06-27 16:27:16 -07:00 · 2021-06-27 16:27:16 -07:00 · 829b9ae2bb
commit 829b9ae2bb
parent 88c21de990
1 changed files with 73 additions and 0 deletions
--- a/plugins/example/ExampleStringDecrypter.js
+++ b/plugins/example/ExampleStringDecrypter.js
@ -0,0 +1,73 @@
+/**
+ * This is an example of a string decrypter plugin
+ */
+
+var PluginConsole = Java.type("the.bytecode.club.bytecodeviewer.api.PluginConsole");
+var MultipleChoiceDialogue = Java.type("the.bytecode.club.bytecodeviewer.gui.components.MultipleChoiceDialogue")
+var BytecodeViewer = Java.type("the.bytecode.club.bytecodeviewer.api.BytecodeViewer")
+
+var dialogue = new MultipleChoiceDialogue("Bytecode Viewer - WARNING",
+                "WARNING: This will load the classes into the JVM and execute the initialize function"
+                        + "\nfor each class. IF THE FILE YOU'RE LOADING IS MALICIOUS, DO NOT CONTINUE.",
+                ["Continue", "Cancel"]);
+var gui = new PluginConsole("Skeleton");
+
+function execute(classNodeList)
+{
+    if(dialogue.promptChoice() == 0)
+    {
+        var needsWarning = false;
+
+        for (cnIndex = 0; cnIndex < classNodeList.length; cnIndex++)
+        {
+            try
+            {
+                var cn = classNodeList[cnIndex];
+                var fields = cn.fields.toArray();
+
+                //load the class node into the classloader
+                BytecodeViewer.getClassNodeLoader().addClass(cn);
+
+                for (fieldIndex = 0; fieldIndex < fields.length; fieldIndex++)
+                {
+                    var field = fields[fieldIndex];
+
+                    //if the class contains the field z, get the class object from the class node
+                    //then print out the value of the fields inside the class
+                    //if the strings get decrypted on init, this allows you to dump the current values
+
+                    if(field.name.equals("z")) {// && f.desc.equals("([Ljava/lang/String;)V")) {
+                        try
+                        {
+                            var loadedClass = BytecodeViewer.getClassNodeLoader().nodeToClass(cn);
+                            var reflectedFields = loadedClass.getFields();
+
+                            for (reflectedFieldIndex = 0; reflectedFieldIndex < reflectedFields.length; reflectedFieldIndex++)
+                            {
+                                var reflectedField = reflectedFields[fieldIndex];
+                                var s = reflectedField.get(null);
+
+                                if(s != null && !s.empty())
+                                    gui.appendText(cn + "->" + s);
+                            }
+                        } catch(e) {}
+                    }
+                }
+            }
+            catch(e)
+            {
+                gui.appendText("Failed loading class " + cn.getName());
+                e.printStackTrace();
+                needsWarning = true;
+            }
+        }
+
+        if (needsWarning)
+        {
+            BytecodeViewer.showMessage("Some classes failed to decrypt, if you'd like to decrypt all of them"
+                    + nl + "makes sure you include ALL the libraries it requires.");
+        }
+
+        gui.setVisible(true);
+    }
+}