bcv-vf/plugins/javascript/ExampleStringDecrypter.js

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/**
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** This is an example of a String Decrypter Javascript Plugin for BCV.
**
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** @author [Your-Name-Goes-Here]
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**/
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var PluginConsole = Java.type("the.bytecode.club.bytecodeviewer.api.PluginConsole");
var MultipleChoiceDialog = Java.type("the.bytecode.club.bytecodeviewer.gui.components.MultipleChoiceDialog")
var BytecodeViewer = Java.type("the.bytecode.club.bytecodeviewer.api.BCV")
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var dialog = new MultipleChoiceDialog("Bytecode Viewer - WARNING",
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"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;
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function execute(classNodeList) {
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gui = new PluginConsole("Example String Decrypter Javascript Edition");
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if (dialog.promptChoice() == 0) {
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var needsWarning = false;
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for (cnIndex = 0; cnIndex < classNodeList.length; cnIndex++) {
try {
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var cn = classNodeList[cnIndex];
//load the class node into the classloader
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BytecodeViewer.getClassNodeLoader().addClass(cn);
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var fields = cn.fields.toArray();
for (fieldIndex = 0; fieldIndex < fields.length; fieldIndex++) {
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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
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if (field.name.equals("z")) {
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try {
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var loadedClass = BytecodeViewer.getClassNodeLoader().nodeToClass(cn);
var reflectedFields = loadedClass.getFields();
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for (reflectedFieldIndex = 0; reflectedFieldIndex < reflectedFields.length; reflectedFieldIndex++) {
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var reflectedField = reflectedFields[fieldIndex];
var s = reflectedField.get(null);
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if (s != null && !s.empty())
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gui.appendText(cn + "->" + s);
}
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} catch (ignored) {
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}
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}
}
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} catch (e) {
gui.appendText("Failed loading class " + cn.name);
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e.printStackTrace();
needsWarning = true;
}
}
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if (needsWarning) {
BytecodeViewer.showMessage("Some classes failed to decrypt, if you'd like to decrypt all of them\n"
+ "makes sure you include ALL the libraries it requires.");
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}
gui.setVisible(true);
}
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}