从 wechall.net 到 net-force.nl 网站,发现网站的内容不错,里面也有不同类型的挑战题目:Javascript / Java Applets / Cryptography / Exploits / Cracking / Programming / Internet / Steganography,有的还有一定的难度.注册了帐号做题,我也从中学到了不少知识.对网络攻防有兴趣的同学可以尝试下. level 601: Keep walking... /* This is a ch…

做CTF题好长一段时间了,真的可以学到很多东西.这次,我们开启 net-force.nl 的 Steganography之旅,所谓的隐写术. level 801: Training - Can you see me? 点开上面的链接可以查看题目.字的颜色以背景颜色书写,惯用的雕虫小技,Ctrl + A 就能现形,或者查看网页代码,答案显而易见. <span style="color: white"> Look at the file password.gif and you…

hackme.inndy.tw的一些Writeup(6月3日更新) 原文链接:http://www.cnblogs.com/WangAoBo/p/7706719.html 推荐一下https://hackme.inndy.tw/scoreboard/,上边有一些很好的针对新手的题目,但网上能搜到的Writeup很少,因此开了这篇博文记录一下部分目前解出的题目(主要是pwn和re),以后会跟着解题进度的推进逐步更新,同时遵循inndy师傅的规矩,只放思路,不放flag. zwhubuntu师傅的部…

Beej's Guide to Network Programming Using Internet Sockets Brian "Beej Jorgensen" Hallbeej@beej.us Version 3.0.15July 3, 2012 Copyright © 2012 Brian "Beej Jorgensen" Hall Contents 1. Intro 1.1. Audience 1.2. Platform and Compiler 1.3. …

原文:View Programming Guide for iOS View and Window Architecture Views and windows present your application’s user interface and handle the interactions with that interface. UIKit and other system frameworks provide a number of views that you can use a…

Top 10 Programming Fonts Sunday, 17 May 2009 • Permalink Update: This post was written back in 2009, and much has changed since then. I’ve also written a few subsequent posts about alternative programming fonts, like this one about Anonymous Pro. I’m…

转自http://www.gamasutra.com/view/feature/132084/sponsored_feature_common_.php?print=1 By Becky Heineman [In this technical article, part of Microsoft's XNA-related Gamasutra microsite, XNA Developer Connection staffer and Interplay co-founder Becky He…

转载自:http://blog.csdn.net/speedme/article/details/24231197 1. 什么是动态规划 ------------------------------------------- dynamic programming is a method for solving complex problems by breaking them down into simpler subproblems. (通过把原问题分解为相对简单的子问题的方式求解复杂问题的…

作者:Dumitru 出处:http://community.topcoder.com/tc?module=Static&d1=tutorials&d2=dynProg An important part of given problems can be solved with the help of dynamic programming (DP for short). Being able to tackle problems of this type would greatly in…

Earlier articles in this series: Part I: Idempotence Part II: Immutability Part III: Volatility Part IV: Singletons Oh, hell, this article just had to be about state machines, didn’t it? State machines! Those damned little circles and arrows and q’s.…