【问题标题】:What kind of string is this? What can I do in php to read it?这是什么弦?我可以在 php 中做什么来阅读它?
【发布时间】:2011-02-13 12:48:41
【问题描述】:

这是我下载的一个免费程序的 database.inf 文件中的一个字符串(见下文,虚线之后),其中列出了一些网站。

如您所见,该文件是纯文本,但后面有一个 看起来 base64 编码的字符串(由于 == 的结尾字符)。但是 b64_decoding 它给出了胡言乱语。

我想解码它,这样我就可以添加到它拥有的站点列表中(程序列出了一堆站点和关于它们的数据,我可以在 GUI 中读取它们)并且为此我需要解码它,添加给它,然后重新编码。

我认为该程序使用 .net,因为我认为安装时需要 .net 库,但我对原始源语言一无所知。

我正在使用 php 来确定是否有一种简单的方法来阅读此内容。我曾尝试使用 unpack、binhex、base_convert 等,因为我怀疑该文件在某种程度上是二进制文件,但我迷路了。

没有什么违法的,只是想知道它是什么,以及是否可以添加一些东西以使其对我更有用。 这是文件 - 任何想法如何解码和重新编码以供使用?


网站列表
文件大小:62139
数据库版本:13
生成时间:2010-04-27 11:53:40

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1-40 + TsYzaDUQoFhUEwMo1hHp5T1Y + jziyrcOlc80ZztEyg9henYGsqPjj1HYKnaV3QxokQQgukXiaQoxAXX1352fARlw61m0SRf2kI4qPRZ3MvCK62XN1tacqGSKs + 2D3f7CL9YQHsE3Bb8k6bG86qNzOKhBzssicXjDgDfkDBpOgRDAtFf83LrGkbPzYtQ7IEfQJYaXKG0Gn5MFSJZ36NgbwdjyiDCQrVL5sqNCbOkEJOkwEaICnnNrJaSxEZ4tJZA1c3RAkKyHPRgxYZoU0ooV + asypv2VqLKHgUBM8e3RIoiDv8H / FOXyg == P>

【问题讨论】:

  • 如果您能告诉我们是什么程序生成的,那将会很有帮助。
  • 为什么会有帮助?该程序是读取此文件的已编译 Windows exe。有没有反编译exe看源码的工具?
  • 我认为它是 base64 与交换的charmap,可以使用一些资源编辑器从exe 中读取此自定义charmap

标签: php binary base64 decode


【解决方案1】:

他们很可能以您无法更改的方式创建此字符串。

这并不是他们没有考虑过是否要更改数据,而是他们专门试图对其进行混淆以使其更难更改,这表明他们不希望您这样做.

鉴于您使用的是其他人的代码,您应该仔细检查哪些许可证涵盖了您对代码的使用以及它是否允许您进行修改。完成此操作后,您应该联系代码的创建者,询问他们如何进行更改,如果您认为自己有权这样做。

【讨论】:

    【解决方案2】:

    我的猜测是你有一个包含这个字符串的脚本。检查是否有 eval() 函数将此字符串调用为 base64_decode (ed)。将评估更改为打印。然后,执行它,将输出重定向到一个文件供以后阅读。

    kevin@server:~# php suspicious_script.php > out.php
    

    您应该能够看到发生了什么。

    【讨论】:

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