MohamedAlaa

tmux shortcuts & cheatsheet

start new:

tmux

start new with session name:

tmux new -s myname

corsix

Exploiting Lua 5.1 on 32-bit Windows

The following Lua program generates a Lua bytecode program called ignore-unsigned-sga.fnt, which in turn loads a DLL from within an extremely locked down Lua 5.1 sandbox in a program called RelicCOH2.exe. The remainder of this document attempts to explain how this program works by a whirlwind tour of relevent bits of the Lua 5.1 virtual machine.

if string.dump(function()end):sub(1, 12) ~= "\27Lua\81\0\1\4\4\4\8\0" then
  error("This generator requires a 32-bit version of Lua 5.1")
end

local function outer()
  local magic -- In bytecode, the stack slot corresponding to this local is changed

dongchao-cn

#!/bin/env python

import tornado.httpserver
import tornado.ioloop
import tornado.options
import tornado.web
import tornado.httpclient
import tornado.gen
from tornado.concurrent import run_on_executor
from concurrent.futures import ThreadPoolExecutor

Akagi201

title	description	date	categories	slug
QQ协议分析	QQ协议分析	2014-04-16	protocol	qq-protocol

一. 文字聊天协议族(TCPF, Text Chatting Protocol Family)

hdragomir

<script type="text/javascript">
    (function () {
      "use strict";
      // once cached, the css file is stored on the client forever unless
      // the URL below is changed. Any change will invalidate the cache
      var css_href = './index_files/web-fonts.css';
      // a simple event handler wrapper
      function on(el, ev, callback) {
        if (el.addEventListener) {
          el.addEventListener(ev, callback, false);

zhanghai

#!/usr/bin/env python
# -*- coding: utf-8 -*-
# unzip-gbk.py

import os
import sys
import zipfile

print u"正在处理压缩文件 %s" % sys.argv[1].decode('utf-8')
print

bearice

From 966471712184cfb3b067f2ae8dad9d8e2a896cae Mon Sep 17 00:00:00 2001
From: Bearice Ren <[email protected]>
Date: Tue, 20 Sep 2016 11:52:08 +0800
Subject: [PATCH] add filter-aaaa option

---
 src/dnsmasq.h | 3 ++-
 src/option.c  | 3 +++
 src/rfc1035.c | 9 +++++++++
 3 files changed, 14 insertions(+), 1 deletion(-)

koistya

Files

The basic structure of a React+Flux application (see other examples)

 - /src/actions/AppActions.js     - Action creators (Flux)
 - /src/components/Application.js - The top-level React component
 - /src/constants/ActionTypes.js  - Action types (Flux)
 - /src/core/Dispatcher.js        - Dispatcher (Flux)
 - /src/stores/AppStore.js        - The main store (Flux)

klzgrad

朴素VPN：一个纯内核级静态隧道

由于路由管控系统的建立，实时动态黑洞路由已成为最有效的封锁手段，TCP连接重置和DNS污染成为次要手段，利用漏洞的穿墙方法已不再具有普遍意义。对此应对方法是多样化协议的VPN来抵抗识别。这里介绍一种太简单、有时很朴素的“穷人VPN”。

朴素VPN只需要一次内核配置（Linux内核），即可永久稳定运行，不需要任何用户态守护进程。所有流量转换和加密全部由内核完成，原生性能，开销几乎没有。静态配置，避免动态握手和参数协商产生指纹特征导致被识别。并且支持NAT，移动的内网用户可以使用此方法。支持广泛，基于L2TPv3标准，Linux内核3.2+都有支持，其他操作系统原则上也能支持。但有两个局限：需要root权限；一个隧道只支持一个用户。

朴素VPN利用UDP封装的静态L2TP隧道实现VPN，内核XFRM实现静态IPsec。实际上IP-in-IP隧道即可实现VPN，但是这种协议无法穿越NAT，因此必须利用UDP封装。内核3.18将支持Foo-over-UDP，在UDP里面直接封装IP，与静态的L2TP-over-UDP很类似。

创建一个朴素VPN

quininer

#!/usr/bin/env python
# encoding: utf-8

import asyncio
import json
from aiohttp import ClientSession
from lxml import etree
from argparse import ArgumentParser
from os import mkdir, listdir
from execjs import compile as compilejs