oin

writeup


Java逆向解密

<p>[TOC]</p> <h1>🌓分析</h1> <p>这里主要用到了java反编译器jadx-gui</p> <p>主要加密逻辑为</p> <p><img src="https://pic.imgdb.cn/item/6375c92016f2c2beb1d60795.png" alt="" /> </p> <p>只需要将key中每个字符先异或32再减去‘@’即可得到源文</p> <h1>🌓Exploit</h1> <pre><code>key = [180, 136, 137, 147, 191, 137, 147, 191, 148, 136, 133, 191, 134, 140, 129, 135, 191, 65] for i in key:     print chr(i^32-ord('@')), </code></pre> <p><img src="https://pic.imgdb.cn/item/6375cbbb16f2c2beb1d97dfe.png" alt="" /></p> <h1>🌓附件</h1> <p>jadx-gui: <a href="https://cowtransfer.com/s/c9c8ed115bf448">https://cowtransfer.com/s/c9c8ed115bf448</a> chall: <a href="https://cowtransfer.com/s/4be3f9cdfe3f45">https://cowtransfer.com/s/4be3f9cdfe3f45</a></p>

页面列表

ITEM_HTML