Created
October 17, 2017 06:21
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Flare-On 4 Challenge #10 decryption tool
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import string | |
from PyQt4.QtCore import * | |
from PyQt4.QtGui import * | |
import sys | |
import ui_mainwindow | |
encoded = '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' | |
#encoded = "IBZDEA0DYRFOEEgKRkUaDEVPAkENREVZCxRZTVIcTwZPDRcJWVMdCRYcFk4BDBEcCk4VBhBMHE8THVJTDAwWF1MAVQINAVMKTxQcREYYBhkHUgNPSS0bFkVaSCROF08bBgBSUxYAG0UARRgDHFoXRRUECA5JAA0HFFRNQxoKBVRBFwsEBFgAFQYFVEVOFQsDUggaEUUTGgAARUkaHA5UWQYbBk9XFh0eUkUDBxsIDEUNBxxDW0kVA1VTAwgeGAAREQgcEwAREAoNAlMAExYPS1MyFVUAQU4mU0EfTxcIVUERTBgCEAANGAkIF1NPEgcXUgdIA08ARRUbCk5SHA4GTw9SHAFSVEEFDQtVEQAOBxBSEkEXG1VUGEEMEQxUFk8XRVtJFQNVQRseDRVTQQ4SQRhTRgMMTBRSA08=" | |
KEYLEN = 64 | |
keymap = {} | |
class MainWindow(QMainWindow, ui_mainwindow.Ui_MainWindow): | |
def __init__(self, parent=None): | |
QMainWindow.__init__(self) | |
# super(MainWindow, self).__init__(parent) | |
self.setupUi(self) | |
ct = map(ord, list(encoded.decode('base64'))) | |
self.plainTextEdit.setPlainText(''.join(map(chr, ct))) | |
@pyqtSlot() | |
def on_plainTextEdit_cursorPositionChanged(self): | |
visualOffset = self.plainTextEdit.textCursor().position() | |
lineno = self.plainTextEdit.textCursor().blockNumber() | |
actualOffset = visualOffset + lineno | |
moddedOffset = actualOffset % KEYLEN | |
self.spinBox_2.setValue(lineno) | |
self.spinBox_3.setValue(actualOffset) | |
self.spinBox.setValue(moddedOffset) | |
if moddedOffset in keymap.keys(): | |
self.lineEdit.setText(chr(keymap[moddedOffset])) | |
else: | |
self.lineEdit.setText('NONE') | |
@pyqtSlot(int) | |
def on_spinBox_3_valueChanged(self, value): | |
actualOffset = value | |
moddedOffset = actualOffset % KEYLEN | |
self.spinBox.setValue(moddedOffset) | |
if actualOffset in keymap.keys(): | |
self.lineEdit.setText(chr(keymap[actualOffset])) | |
else: | |
self.lineEdit.setText('NONE') | |
@pyqtSlot() | |
def on_pushButton_clicked(self, *args): | |
ct = map(ord, list(encoded.decode('base64'))) | |
actualOffset = self.spinBox_3.value() | |
actualOffset %= KEYLEN | |
if str(self.lineEdit.text()) == 'CR': | |
char = ord('\r') | |
elif str(self.lineEdit.text()) == 'LF': | |
char = ord('\n') | |
elif str(self.lineEdit.text()) == 'TAB': | |
char = ord('\t') | |
elif len(self.lineEdit.text()) > 1: | |
return | |
else: | |
char = ord(str(self.lineEdit.text())) | |
ct_display = [chr(2)] * len(ct) | |
keymap[actualOffset] = char | |
for p in keymap.keys(): | |
v = keymap[p] | |
ct[p] = v | |
ct_display[p] = chr(v) | |
for i in xrange(p+KEYLEN, len(ct), KEYLEN): | |
ct[i] ^= v | |
ct_display[i] = chr(ct[i]) | |
v = ct[i] | |
self.disconnect(self.plainTextEdit, SIGNAL('cursorPositionChanged()'), self.on_plainTextEdit_cursorPositionChanged) | |
self.plainTextEdit.setPlainText(''.join(ct_display)) | |
#self.plainTextEdit.setPlainText(''.join(map(lambda x: x if x in string.printable else chr(21), map(chr, ct)))) | |
self.connect(self.plainTextEdit, SIGNAL('cursorPositionChanged()'), self.on_plainTextEdit_cursorPositionChanged) | |
app = QApplication(sys.argv) | |
app.setStyle("cleanlooks") | |
win = MainWindow() | |
win.show() | |
sys.exit(app.exec_()) | |
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# -*- coding: utf-8 -*- | |
# Form implementation generated from reading ui file 'window.ui' | |
# | |
# Created: Wed Sep 27 12:47:57 2017 | |
# by: PyQt4 UI code generator 4.10.1 | |
# | |
# WARNING! All changes made in this file will be lost! | |
from PyQt4 import QtCore, QtGui | |
try: | |
_fromUtf8 = QtCore.QString.fromUtf8 | |
except AttributeError: | |
def _fromUtf8(s): | |
return s | |
try: | |
_encoding = QtGui.QApplication.UnicodeUTF8 | |
def _translate(context, text, disambig): | |
return QtGui.QApplication.translate(context, text, disambig, _encoding) | |
except AttributeError: | |
def _translate(context, text, disambig): | |
return QtGui.QApplication.translate(context, text, disambig) | |
class Ui_MainWindow(object): | |
def setupUi(self, MainWindow): | |
MainWindow.setObjectName(_fromUtf8("MainWindow")) | |
MainWindow.resize(815, 502) | |
self.centralwidget = QtGui.QWidget(MainWindow) | |
self.centralwidget.setObjectName(_fromUtf8("centralwidget")) | |
self.horizontalLayout_2 = QtGui.QHBoxLayout(self.centralwidget) | |
self.horizontalLayout_2.setObjectName(_fromUtf8("horizontalLayout_2")) | |
self.verticalLayout = QtGui.QVBoxLayout() | |
self.verticalLayout.setObjectName(_fromUtf8("verticalLayout")) | |
self.plainTextEdit = QtGui.QPlainTextEdit(self.centralwidget) | |
font = QtGui.QFont() | |
font.setFamily(_fromUtf8("Inconsolata")) | |
font.setPointSize(12) | |
self.plainTextEdit.setFont(font) | |
self.plainTextEdit.setHorizontalScrollBarPolicy(QtCore.Qt.ScrollBarAsNeeded) | |
self.plainTextEdit.setUndoRedoEnabled(False) | |
self.plainTextEdit.setLineWrapMode(QtGui.QPlainTextEdit.NoWrap) | |
self.plainTextEdit.setPlainText(_fromUtf8("")) | |
self.plainTextEdit.setObjectName(_fromUtf8("plainTextEdit")) | |
self.verticalLayout.addWidget(self.plainTextEdit) | |
self.horizontalLayout = QtGui.QHBoxLayout() | |
self.horizontalLayout.setObjectName(_fromUtf8("horizontalLayout")) | |
self.label_4 = QtGui.QLabel(self.centralwidget) | |
font = QtGui.QFont() | |
font.setPointSize(12) | |
self.label_4.setFont(font) | |
self.label_4.setObjectName(_fromUtf8("label_4")) | |
self.horizontalLayout.addWidget(self.label_4) | |
self.spinBox_2 = QtGui.QSpinBox(self.centralwidget) | |
font = QtGui.QFont() | |
font.setPointSize(12) | |
self.spinBox_2.setFont(font) | |
self.spinBox_2.setMaximum(500) | |
self.spinBox_2.setObjectName(_fromUtf8("spinBox_2")) | |
self.horizontalLayout.addWidget(self.spinBox_2) | |
self.label_3 = QtGui.QLabel(self.centralwidget) | |
font = QtGui.QFont() | |
font.setPointSize(12) | |
self.label_3.setFont(font) | |
self.label_3.setObjectName(_fromUtf8("label_3")) | |
self.horizontalLayout.addWidget(self.label_3) | |
self.spinBox_3 = QtGui.QSpinBox(self.centralwidget) | |
font = QtGui.QFont() | |
font.setPointSize(12) | |
self.spinBox_3.setFont(font) | |
self.spinBox_3.setMaximum(3000) | |
self.spinBox_3.setObjectName(_fromUtf8("spinBox_3")) | |
self.horizontalLayout.addWidget(self.spinBox_3) | |
self.label = QtGui.QLabel(self.centralwidget) | |
font = QtGui.QFont() | |
font.setPointSize(12) | |
self.label.setFont(font) | |
self.label.setObjectName(_fromUtf8("label")) | |
self.horizontalLayout.addWidget(self.label) | |
self.spinBox = QtGui.QSpinBox(self.centralwidget) | |
font = QtGui.QFont() | |
font.setPointSize(12) | |
self.spinBox.setFont(font) | |
self.spinBox.setReadOnly(True) | |
self.spinBox.setMaximum(63) | |
self.spinBox.setObjectName(_fromUtf8("spinBox")) | |
self.horizontalLayout.addWidget(self.spinBox) | |
self.label_2 = QtGui.QLabel(self.centralwidget) | |
font = QtGui.QFont() | |
font.setPointSize(12) | |
self.label_2.setFont(font) | |
self.label_2.setObjectName(_fromUtf8("label_2")) | |
self.horizontalLayout.addWidget(self.label_2) | |
self.lineEdit = QtGui.QLineEdit(self.centralwidget) | |
font = QtGui.QFont() | |
font.setPointSize(12) | |
self.lineEdit.setFont(font) | |
self.lineEdit.setObjectName(_fromUtf8("lineEdit")) | |
self.horizontalLayout.addWidget(self.lineEdit) | |
self.pushButton = QtGui.QPushButton(self.centralwidget) | |
font = QtGui.QFont() | |
font.setPointSize(12) | |
self.pushButton.setFont(font) | |
self.pushButton.setObjectName(_fromUtf8("pushButton")) | |
self.horizontalLayout.addWidget(self.pushButton) | |
self.verticalLayout.addLayout(self.horizontalLayout) | |
self.horizontalLayout_2.addLayout(self.verticalLayout) | |
MainWindow.setCentralWidget(self.centralwidget) | |
self.retranslateUi(MainWindow) | |
QtCore.QMetaObject.connectSlotsByName(MainWindow) | |
def retranslateUi(self, MainWindow): | |
MainWindow.setWindowTitle(_translate("MainWindow", "o__o", None)) | |
self.label_4.setText(_translate("MainWindow", "Line no:", None)) | |
self.label_3.setText(_translate("MainWindow", "Actual offset:", None)) | |
self.label.setText(_translate("MainWindow", "Modded offset", None)) | |
self.label_2.setText(_translate("MainWindow", "Character:", None)) | |
self.pushButton.setText(_translate("MainWindow", "Set", None)) | |
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