ring3 恢复SSDT

SSDT获取原始服务地址的方法与原理(灯灯灯灯,我肥来了..) 好吧,我胡汉三肥来了..(确实肥了- -),几个月没发什么文章.其实.我也只是一个新丁~欢迎大家交流,高手勿喷,谢谢合作^_^     对于SSDT,不知道的同学请自己百度,判断出SSDT被HOOK之后,如何恢复成原始服务地址?主要方法有两个,简单来说,一个Ring0,一个Ring3的方法(可能分类不够准确),我今天除了介绍方法之外,主要还是讲讲里面的原理吧,原理神马的才是最吸引人的对吧. 阅读详情

SSDTHook实现解析(x86) 在说到SSDTHook实现之前,我们首先来了解一下Win32API的调用过程,我们以ReadFile()为例,来看看从Ring3层到Ring0层的调用过程: 在一个Ring3进程Test.exe中调用ReadFile()函数,此时我们调用的是kernel32.dll中的导出函数,接下来ReadFile()会调用到位于ntdll.dll中的NtReadFile()或者ZwReadFile(),在nt... 阅读详情

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驱动还原:恢复SSDT内核钩子(2)

SSDT 中文名称为系统服务描述符表,该表的作用是将Ring3应用层与Ring0内核层,两者的API函数连接起来,起到承上启下的作用,SSDT并不仅仅只包含一个庞大的地址索引表,它还包含着一些其它有用的信息,诸如地址索引的基址、服务函数个数等,SSDT 通过修改此表的函数地址可以对常用 Windows 函数进行内核级的Hook,从而实现对一些核心的系统动作进行过滤、监控的目的。 通过前面...

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Ring3下获取原始的SSDT

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