攻防世界MISC高手进阶区 部分WriteUp
reverseMe
下载附件
![](https://img2022.cnblogs.com/blog/2236821/202205/2236821-20220519072739242-615965182.png)
得到一个颠倒的flag图片
![](https://img2022.cnblogs.com/blog/2236821/202205/2236821-20220519072739443-1930350225.png)
编辑,翻转,得到flag
![](https://img2022.cnblogs.com/blog/2236821/202205/2236821-20220519072739015-504337197.png)
What-is-this
![](https://img2022.cnblogs.com/blog/2236821/202205/2236821-20220519072739869-1128114511.png)
下载附件,是.gz压缩,解压,得到两张图片
![](https://img2022.cnblogs.com/blog/2236821/202205/2236821-20220519072739282-293039002.png)
使用StegSolve工具的combiner功能将两张图片组合,即可得到flag
![](https://img2022.cnblogs.com/blog/2236821/202205/2236821-20220519072738900-1180814684.png)
![](https://img2022.cnblogs.com/blog/2236821/202205/2236821-20220519072739664-1669063490.png)
normal_png
![](https://img2022.cnblogs.com/blog/2236821/202205/2236821-20220519072739770-1335389760.png)
下载附件,得到一个png
![](https://img2022.cnblogs.com/blog/2236821/202205/2236821-20220519072739971-553964894.png)
扔进WinHex
![](https://img2022.cnblogs.com/blog/2236821/202205/2236821-20220519072739038-1317173512.png)
分析PNG图像结构参考链接:https://blog.csdn.net/joqian/article/details/8290389
我们尝试将高度036B修改为046B,保存并重新打开页面,得到flag
![](https://img2022.cnblogs.com/blog/2236821/202205/2236821-20220519072739352-848427840.png)
本文来自博客园,作者:NoCirc1e,转载请注明原文链接:https://www.cnblogs.com/NoCirc1e/p/16287114.html