CTF第九天,XCTF体验题库:misc_pic_again【原理】图片隐写术【目的】图片隐写术【环境】Windowskali【工具】binwalk,stegsolve.jar【步骤】步骤1:首先下载附件:步骤2:用工具Stegsolve.jar打开图片File->Open找到指定文件,如下图:\选择Analyse->DataExtract修改相
通过隐写图片工具stegsolve工具打开pic1.jpg 然后选择image comibiner工具打开另一张图片pic2.png \ 对2张图片进行合并,合并后可获得flag 方法二: 得到两张相似的图片,第一反应是两张图片的合并,于是使用kali下的compare命令进行合并,然后得到FLAG compare pic1.jpg pic2.jpg -compose src flag.jpg 最终得到flag:...
/misc / Mysterious-GIF / Category:MiscPoints:100Solves:(TODO)Description: Aalekh is a die hard fan of Felicity and he decided to make a GIF (Graphics Interchange Format) based on this year's Felicity theme. One fine day, Parth, an Anime lover gives Aalekh and Animesh a flag to hide ...
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misc Mine Sweeping 分析 Elements.cs classElements:MonoBehaviour{voidAwake(){intx=(int)transform.position.x;inty=(int)transform.position.y;//根据全局的数组设置该格子是雷还是空地bIsMine=(((MayWorldBeAtPeace[x,y]^AreYouFerryMen[x,y])-233)/2333)==1?true:false;//根据格子的position,将物体实例...
当时可能眼花了,其实另一方面是我觉得这个题目虽然挺普通,但是能再次回顾下md5扩展思路的一些做题技巧,因为自己大一大二一直在学习知识拓展自己的知识面,所以很少做ctf的题目,平时遇到什么类型的题基本就是自己重新理解然后写脚本来做的,所以做题速度很慢,反正就是特别菜那种,所以吸取教训之后,我就需要把一些常见的知识...
pic again用stegsolve进行LSB检测发现在 0 通道有异常用StegSolve的Data Extract功能将隐写信息提取出来Preview 发现存在一个压缩包点击save bin在压缩包中的文件找到了flag杂项签到from Crypto import Random from Crypto.Cipher import AES import sys import base64 def decrypt(encrypted, passphrase): IV = encrypted...
doc add 1.6.* crypto Dec 25, 2017 pic del 4.1, merry christmas! Dec 25, 2017 slides big change Nov 23, 2017 src del 4.1, merry christmas! Dec 25, 2017 tex plan to rewrite with latex and make pdf great again Dec 14, 2017 CHANGELOG add 1.6.* crypto Dec 25, 2017 ...
Thus we can conclude that the transforms T and T' are "Multiplicative Inverse" of each other, and since these transforms only depend on the`KEY`used during the encryption (or decryption), we need to perform the decryption with a KEY', such that KEY' = MultipicativeInverse(KEY). ...