In fact, there are a lot of articles on ssdt restoration on the Internet, which seems to be very simple. To use a netizen, It is the technology that Cai B uses. However, I have actually spent some time, and it may be that my understanding is poor. It's really easy to get it out after two or three days, but some articles are vague.
The following are some important points:
1. ssdt already exists in the origin
// No technical content. It is copied. If the driver is getting started, please enter
/*************************************** *********************************
* File name: Driver. h* Author:* Completion date:**************************************** *********************************/
# Pragma once // ensure that the header file is compiled only once
# Include
# Define ulong unsigned long# Define pagedcode code_seg ("page")/* indicates the code segment that can be replaced to the hard disk whe
For the sake of security, Windows XP and later systems set some important memory pages as read-only properties, so that even if you have the right to access the table, you cannot modify it at will, such as ssdt and IDT. However, this method is easy to bypass. We only need to change these parts to writable attributes, but remember to restore them to read-only attributes after our work is done, otherwise, some unpredictable consequences will occur.
Cr0
typedefstruct_servicedescriptortable {PVOID servicetablebase; //base address for System Service Dispatch TablePVOID servicecountertable;//A counter that contains the number of times each service in SSDT has been called. This counter is generally updated by Sysenter. UnsignedintNumberofservices;//The number of services described by Servicetablebase. PVOID paramtablebase;//base address for each system service parameter byte table-system service paramete
For the sake of security, Windows XP and later systems set some important memory pages as read-only properties, so that even if you have the right to access the table, you cannot modify it at will, such as SSDT and IDT. However, this method is easy to bypass. We only need to change these parts to writable attributes, but remember to restore them to read-only attributes after our work is done, otherwise, some unpredictable consequences will occur.
Cr0
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