Windows驱动开发学习记录-Windbg打印Shadow SSDT 脚本

一、脚本

• X86环境

 1 aS ufLinkS "<u><col fg=\\\"emphfg\\\"><link name=\\\"%p\\\" cmd=\\\"uf 0x%p\\\">";
 2 aS ufLinkE "</link></col></u>";
 3  
 4 r $t1 = nt!KeServiceDescriptorTableShadow;
 5 r $t2 = @$t1 + 0x04*4;
 6 r $t3 = poi(@$t2 + 0x8);
 7 r $t2 = poi(@$t2);
 8  
 9 .printf "\n\nKeServiceDescriptorTableShadow->W32pServiceTable:  %p\nKeServiceDescriptorTableShadow->Count: %d\n", @$t2, @$t3;
10 .printf "\nOrd   Address   fnAddr   Symbols\n";
11 .printf "--------------------------------\n\n";
12  
13 .for (r $t0 = 0; @$t0 != @$t3; r $t0 = @$t0 + 1)
14 {
15     r @$t4 = (poi(@$t2 + @$t0 * 4)) 
16  
17        
18     .printf /D "[%3d] ${ufLinkS}%p${ufLinkE} (%y)\n", @$t0, @$t4, @$t4, @$t4, @$t4;
19 }
20  
21 .printf "\n- end -\n";

 

• x64环境

 1 aS ufLinkS "<u><col fg=\\\"emphfg\\\"><link name=\\\"%p\\\" cmd=\\\"uf 0x%p\\\">";
 2 aS ufLinkE "</link></col></u>";
 3  
 4 r $t1 = nt!KeServiceDescriptorTableShadow;
 5 r $t2 = @$t1 + 0x08*4;
 6 r $t3 = poi(@$t2 + 0x10);
 7 r $t2 = poi(@$t2);   
 8  
 9 .printf "\n\nKeServiceDescriptorTableShadow->W32pServiceTable:  %p\nKeServiceDescriptorTableShadow->Count: %d\n", @$t2, @$t3;
10 .printf "\nOrd   Address         Symbols\n";
11 .printf "--------------------------------\n\n";
12  
13 .for (r $t0 = 0; @$t0 != @$t3; r $t0 = @$t0 + 1)
14 {
15     r @$t4 = (poi(@$t2 + @$t0 * 4)) & 0x00000000`FFFFFFFF;
16     $$.printf "2. %p\n", @$t4;
17        
18     .if ( @$t4 & 0x80000000 )
19        {
20                r @$t4 = (@$t4 >> 4) | 0xFFFFFFFF`F0000000;
21                r @$t4 = 0 - @$t4;
22                r @$t4 = @$t2 - @$t4;
23        }
24        .else
25        {
26            r @$t4 = (@$t4 >> 4);
27                r @$t4 = (@$t2 + @$t4);
28        }
29        
30     .printf /D /os "[%3d] ${ufLinkS}%p${ufLinkE} (%y)\n", @$t0, @$t4, @$t4, @$t4, @$t4;
31 }
32  
33 .printf "\n- end -\n";

 

二、使用方法

　　因为Shadow SSDT 的W32pServiceTable表数据在系统进程是不可访问的，所以要先附加到可以访问该数据的进程，我这里选的是桌面进程explorer.exe。

　　先执行 !process 0 0 explorer.exe，查找桌面进程的EPROCESS地址。

4: kd> !process 0 0 explorer.exe
PROCESS 893e5bc0  SessionId: 1  Cid: 03b0    Peb: 7ffd6000  ParentCid: 0080
    DirBase: be4bb6c0  ObjectTable: 9b2dbac8  HandleCount: 572.
    Image: explorer.exe

　　

　　然后附加到该进程，.process 893e5bc0

 

4: kd> .process 893e5bc0
ReadVirtual: 893e5bd8 not properly sign extended
Implicit process is now 893e5bc0
WARNING: .cache forcedecodeuser is not enabled

　　

　　重新加载win32k.sys的符号

 

4: kd> .reload win32k.sys


Press ctrl-c (cdb, kd, ntsd) or ctrl-break (windbg) to abort symbol loads that take too long.
Run !sym noisy before .reload to track down problems loading symbols.

 

　　之后再执行脚本, "$><"后边加上脚本路径

 

4: kd> $><E:\驱动代码\x86SSDTShadow.txt

 

三、测试效果

• x86(Win7 x86)

 

  

•  x64(Win10 x64)