nerder

Okay, the user is asking about decoding a hidden message in the emoji 😊󠅘󠅕󠅜󠅜󠅟. Let me take a closer look.

First, I notice that the emoji is followed by several Unicode characters. The main emoji is 😊, which is a standard smiley face. The characters after it are Unicode code points. Let me check what those are.

The sequence after 😊 is: U+E0158, U+E0155, U+E015C, U+E015C, U+E015F. Wait, but Unicode characters are usually represented in hexadecimal. Let me convert those numbers properly.

Wait, the user wrote the emoji as 😊󠅘󠅕󠅜󠅜󠅟. Let's break down the Unicode codepoints. The 😊 is U+1F60A. Then, the following characters are in the range of Variation Selectors. Specifically, each of those is a variation selector supplement. Let me check each one:

• 󠅘 is U+E0158

nerder

Passive WiFi Tracking Posted February 26, 2014 by Edward Borrowed from: http://edwardkeeble.com/2014/02/passive-wifi-tracking/

In the last year or so, there have been quite a few stories on the use of passive WiFi tracking by advertisers, retailers, and analytics startups. Most of these articles focus on the significant privacy and security concerns associated with this practice, but few of them get into the details of how the technology works. Having built a similar system for my project, Casual Encounters, I think I can explain some of the inner workings of these systems, how to avoid being tracked, and how, for research purposes or to determine their own level of exposure, someone could build such a system. I will state that I am by no means an expert on wireless networks, signal analysis, or anything of the sort, but I have conducted a fair bit of research and trial and error, and it works for me. Your mileage may vary; don’t try this at home; etc, etc.

Probe Requests

When a WiFi client (phone,

nerder

DEF CON CTF Qualifier 2020 - Pooot Writeup

This challenge was about an In-Browser web proxy, that allows you to navigate the web “safely”. They also offer a feedback system in which you can report broken links. This immediately makes us thinking about some kind of bot that we should phish and steal some cookies with an XSS.

It wasn’t that easy 😃

No code was provided at first, but was easy to find in the commented html of the page:

<!-- <a href="/source"></a> -->

nerder

/// StatelessWidget template
class MyStateless extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return Container();
  }
}

/// StatelessWidget template
class MyStateful extends StatefulWidget {

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// IMPORTANT SHORTCUTS
// Run the code: [Cmd] + [Enter]
// Show quick fixes: [Alt] + [Enter]
// Comment-out code: [Cmd] + [/]

import 'package:flutter/material.dart';

final Color twPink = Color.fromARGB(255, 239, 91, 161);

void main() {

nerder

Keybase proof

I hereby claim:

• I am nerder on github.
• I am nerder (https://keybase.io/nerder) on keybase.
• I have a public key whose fingerprint is F138 23F9 865B 1978 A9A6 1A9B 18AC 5A8F 135B 3B34

To claim this, I am signing this object:

nerder

DISCLAMER: I wasn't able to get the flag due to time shortage, but all the main ideas of the challange are here. This are basically the notes i take over the challange in order to figure out the solution of the puzzle. The approach i use in order to define a path toward the solution using the hints in the code that guides me in a specific direction.

Cat Chat [Google CTF (Quals) 2018]

The challange as far as i can tell consist in finding a Stored XSS and fish the admin to review the room to steel his cookies.

There are various hints that makes me think so:

headers: {

nerder

var casper = require('casper').create({
  remoteScripts:  [
    'http://ajax.googleapis.com/ajax/libs/jquery/1.6.1/jquery.min.js',
    'https://cdnjs.cloudflare.com/ajax/libs/lodash.js/4.6.1/lodash.js'
  ],
  pageSettings: {
    userAgent: 'Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/40.0.1500.71 Safari/537.36'
  },
  viewport: {
    width: 1280,

nerder

const Integer = t.refinement(t.Number, n => n % 1 === 0, 'Integer');
const Hour = t.refinement(Integer, int => int >= 1 && int <= 23, 'Hour');
const Hour12 = t.refinement(Hour, int => int >= 1 && int <= 12, 'Hour12');
const Minute = t.refinement(Integer, int => int >= 0 && int <= 59, 'Minute');

const TimeFormat = t.enums.of([H12, H24], 'TimeFormat');

nerder

angular.module('plunker', [])

  .controller('MainCtrl', function($scope) {
    $scope.myModel = {};
    $scope.myModel.to = "init-";
    
    //AT THE END OF EXECUTION
    //What i expect to have is something like
    $scope.myModel.to = "init-something-to-slug";
    $scope.myModel.from = "Something to slug";