JSON-Escaper.py

from burp import IBurpExtender, ITab
from java.awt import GridBagLayout, GridBagConstraints, Insets
from java.io import PrintWriter
from java.lang import RuntimeException
from javax.swing import JPanel, JLabel, JTextField, JButton, JScrollPane, JTextArea, BorderFactory, SwingConstants, JPopupMenu, JMenuItem, JFileChooser
import json

class JSONEscaperTab(ITab):
    def __init__(self, extender):
        self._extender = extender
        self._txtPayload = JTextArea(6, 20)
        self._txtPayload.setLineWrap(True)
        self._txtPayload.setWrapStyleWord(True)
        self._scrollPanePayload = JScrollPane(self._txtPayload)
        self._btnEscape = JButton("Escape", actionPerformed=self.escape)
        self._txtResult = JTextArea(10, 26)
        self._txtResult.setLineWrap(True)
        self._txtResult.setWrapStyleWord(True)
        self._txtResult.setEditable(True)
        self._scrollPaneResult = JScrollPane(self._txtResult)

        # Add a button for file upload
        self._btnUpload = JButton("Upload File", actionPerformed=self.uploadFile)

        panel = JPanel()
        layout = GridBagLayout()
        panel.setLayout(layout)

        gbc = GridBagConstraints()
        gbc.gridx = 0
        gbc.gridy = 0
        gbc.weightx = 1.0
        gbc.weighty = 0.0
        gbc.fill = GridBagConstraints.HORIZONTAL
        gbc.insets = Insets(5, 5, 5, 5)

        panel.add(JLabel("Payload:"), gbc)

        gbc.gridy = 1
        gbc.weighty = 1.0
        gbc.fill = GridBagConstraints.BOTH
        gbc.insets = Insets(0, 5, 5, 5)

        panel.add(self._scrollPanePayload, gbc)

        gbc.gridy = 2
        gbc.weighty = 0.0
        gbc.fill = GridBagConstraints.HORIZONTAL

        panel.add(self._btnEscape, gbc)

        # Add file upload button in the interface
        gbc.gridy = 3
        gbc.weighty = 0.0
        panel.add(self._btnUpload, gbc)

        gbc.gridy = 4
        gbc.weighty = 0.0
        gbc.fill = GridBagConstraints.HORIZONTAL

        panel.add(JLabel("Escaped Payload:"), gbc)

        gbc.gridy = 5
        gbc.weighty = 1.0
        gbc.fill = GridBagConstraints.BOTH

        panel.add(self._scrollPaneResult, gbc)

        # Add borders to the text areas
        self._scrollPanePayload.setBorder(BorderFactory.createEtchedBorder())
        self._scrollPaneResult.setBorder(BorderFactory.createEtchedBorder())

        # Add right-click context menu to the input and output areas
        self._txtPayload.setComponentPopupMenu(self.createPopupMenu(self._txtPayload))
        self._txtResult.setComponentPopupMenu(self.createPopupMenu(self._txtResult))

        self.component = panel

    def getTabCaption(self):
        return "JSON Escaper"

    def getUiComponent(self):
        return self.component

    def escape(self, event):
        try:
            # Get the payload and split it by lines
            payload = self._txtPayload.getText()
            lines = payload.splitlines()

            # JSON-escape each line and join them with newlines
            json_escaped_lines = [json.dumps(line, separators=(',', ':'), ensure_ascii=False) for line in lines]
            json_escaped = "\n".join(json_escaped_lines)

            # Set the escaped payload into the result text area
            self._txtResult.setText(json_escaped)
        except Exception as e:
            self._extender._callbacks.printError(str(e))

    def uploadFile(self, event):
        # Use JFileChooser to open a file chooser dialog
        fileChooser = JFileChooser()
        result = fileChooser.showOpenDialog(None)

        if result == JFileChooser.APPROVE_OPTION:
            try:
                # Read the selected file
                file = fileChooser.getSelectedFile()
                with open(file.getPath(), 'r') as f:
                    content = f.read()

                # Set the file content as payload and display it in the payload text area
                self._txtPayload.setText(content)

                # Split the file content into lines
                lines = content.splitlines()

                # Escape each line as JSON and join them with newlines
                json_escaped_lines = [json.dumps(line, separators=(',', ':'), ensure_ascii=False) for line in lines]
                json_escaped = "\n".join(json_escaped_lines)

                # Display the escaped payload in the result text area
                self._txtResult.setText(json_escaped)

            except Exception as e:
                self._extender._callbacks.printError(str(e))

    def createPopupMenu(self, text_area):
        # Create the right-click context menu
        menu = JPopupMenu()

        # Create menu items
        copy_item = JMenuItem("Copy")
        paste_item = JMenuItem("Paste")
        cut_item = JMenuItem("Cut")
        select_all_item = JMenuItem("Select All")
        clear_item = JMenuItem("Clear")

        # Add action listeners to the menu items
        copy_item.addActionListener(lambda event: self.copyText(text_area))
        paste_item.addActionListener(lambda event: self.pasteText(text_area))
        cut_item.addActionListener(lambda event: self.cutText(text_area))
        select_all_item.addActionListener(lambda event: self.selectAllText(text_area))
        clear_item.addActionListener(lambda event: self.clearText(text_area))

        # Add menu items to the menu
        menu.add(copy_item)
        menu.add(paste_item)
        menu.add(cut_item)
        menu.add(select_all_item)
        menu.add(clear_item)

        return menu

    def copyText(self, text_area):
        # Copy selected text to the clipboard
        text_area.copy()

    def pasteText(self, text_area):
        # Paste text from the clipboard
        text_area.paste()

    def cutText(self, text_area):
        # Cut selected text
        text_area.cut()

    def selectAllText(self, text_area):
        # Select all text
        text_area.selectAll()

    def clearText(self, text_area):
        # Clear the text
        text_area.setText("")

class BurpExtender(IBurpExtender):
    def registerExtenderCallbacks(self, callbacks):
        self._callbacks = callbacks
        self._helpers = callbacks.getHelpers()
        callbacks.setExtensionName("JSON Escaper")
        callbacks.addSuiteTab(JSONEscaperTab(self))