来自3thParty供应商的section对象名为rpsPdf10.mutex，其目的是通过向其写入布尔标志来模仿信号量。
使用LiveKd并在SO的帮助下，我发出了以下命令，试图获取这个Section对象的详细信息。
0: kd>!process 0 0 3thParty.exe
...
PROCESS fffffa800ea80060
SessionId: 0 Cid: 0a00 Peb: fffdf000 ParentCid: 014c
DirBase: 99349000 ObjectTable: fffff8a004448bf0 HandleCount: 338.
Image: 3thParty.exe
...
0: kd> !handle 0 7 fffffa800ea80060
...
08 fffff8a012e26710 Section rpsPdf10.mutex
...
0: kd> !object fffff8a012e26710
Object: fffff8a012e26710 Type: (fffffa800cd7cea0) Section
ObjectHeader: fffff8a012e266e0 (new version)
HandleCount: 38 PointerCount: 39
Directory Object: fffff8a00a980080 Name: rpsPdf10.mutex
0: kd> dt -r1 nt!_SECTION_OBJECT 0xfffff8a012e26710
+0x000 StartingVa : 0x00000022`00000100 Void
+0x008 EndingVa : 0x00000000`0008dfb0 Void
+0x010 Parent : 0xfffffa80`c0000001 Void
+0x018 LeftChild : (null)
+0x020 RightChild : 0xfffffa80`00000034 Void
+0x028 Segment : 0xfffff8a0`102d7820 _SEGMENT_OBJECT
+0x000 BaseAddress : 0xfffffa80`0fbed900 Void
+0x008 TotalNumberOfPtes : 1
+0x010 SizeOfSegment : _LARGE_INTEGER 0x1
+0x018 NonExtendedPtes : 0x1000
+0x01c ImageCommitment : 0
+0x020 ControlArea : (null)
+0x028 Subsection : (null)
+0x030 MmSectionFlags : 0xfffffa80`10987b10 _MMSECTION_FLAGS
+0x038 MmSubSectionFlags : 0x00000000`03400000 _MMSUBSECTION_FLAGS
所有这些对我来说都是正确的，但我怎样才能找到该部分的内容？
答案 0 :(得分：3)
需要注意的是，在earlier answer机器中是32位且os是win7而windbg版本是内部预览16278命令是拱形不可知和指针算术，如果有任何与拱相关的话 并且直播是在实时二进制文件而不是在转储中，因为页面可能已经在转储中被分页，并且演示可能是不确定的，我可能会在稍后添加到此答案中
获取内容表单部分有点令人费解
（有几种类型的章节如
1）ALPC部分（com对象）
2）文件支持部分
3）PageFileBacked Section等
下面的演练是针对页面文件支持的部分（最常见的类型）
假设您编译并执行了以下代码 exe将在全局命名空间中创建一个SectionObject 并且内容将由PagingFile支持并且将等待a 按键
#include <windows.h>
#include <stdio.h>
#define bsize 256
int main(){
char szMsg[]={"Message from blabb to lieven from Stack Overflow."};
int ret = NULL;
HANDLE hMap = CreateFileMapping((HANDLE)-1,NULL,4,0,bsize,"Global\\MyMap");
if(hMap){
PCHAR buff = (PCHAR) MapViewOfFile(hMap,0xf001f,0,0,bsize);
if(buff){
CopyMemory(buff, szMsg, sizeof(szMsg));
ret = getchar();
UnmapViewOfFile(buff);
}
CloseHandle(hMap);
}
return ret;
}
假设进程正在等待按键启动livekd或设置实时内核调试连接（如果它在远程机器/ vm中运行）
C：＆gt; livekd -k＆＃34; c：\ Program Files \ Windows Kits \ 10 \ Debuggers \ x86 \ cdb.exe＆＃34;
LiveKd v5.62 - Execute kd/windbg on a live system
Launching c:\Program Files\Windows Kits\10\Debuggers\x86\cdb.exe:
Microsoft (R) Windows Debugger Version 10.0.16278.1000 X86
获取_EPROCESS并设置上下文
kd> !process 0 0 secobj.exe
PROCESS 8605ab28 SessionId: 1 Cid: 0fbc Peb: 7ffd9000 ParentCid: 0af4
DirBase: 7e2712e0 ObjectTable: c288ba00 HandleCount: 9.
Image: secobj.exe
kd> .process /p /r 8605ab28
Implicit process is now 8605ab28
kd> ? @$proc
Evaluate expression: -2046448856 = 8605ab28
kd> ?? (char *)@$proc->ImageFileName
char * 0x8605ac94
"secobj.exe"
在我们的当前流程通知中查找类型为Section的句柄 section在全局命名空间windbg中以我们的方式命名
kd> !handle 0 3 @$proc Section
Searching for handles of type Section
PROCESS 8605ab28 SessionId: 1 Cid: 0fbc Peb: 7ffd9000 ParentCid: 0af4
DirBase: 7e2712e0 ObjectTable: c288ba00 HandleCount: 9.
Image: secobj.exe
Handle table at c288ba00 with 9 entries in use
0024: Object: c238e9c8 GrantedAccess: 000f0007 Entry: c37b7048
Object: c238e9c8 Type: (84ec6040) Section
ObjectHeader: c238e9b0 (new version)
HandleCount: 1 PointerCount: 2
Directory Object: 98a0f170 Name: MyMap
转储SectionObject
kd> dt nt!_SECTION_OBJECT c238e9c8
+0x000 StartingVa : 0xc227e2c8 Void
+0x004 EndingVa : 0x00d3db6c Void
+0x008 Parent : 0xb0d3db20 Void
+0x00c LeftChild : (null)
+0x010 RightChild : 0x00000003 Void
+0x014 Segment : 0xc36aba20 _SEGMENT_OBJECT
<强> KD＆GT; $$注意最后一个段成员它不是SEGMENT_OBJECT而是
nt！_segment或实际上是本节的ControlArea指针
kd> dt nt!_SEGMENT 0xc36aba20
+0x000 ControlArea : 0x85182d08 _CONTROL_AREA
+0x004 TotalNumberOfPtes : 1
+0x008 SegmentFlags : _SEGMENT_FLAGS
+0x00c NumberOfCommittedPages : 1
+0x010 SizeOfSegment : 0x1000
+0x018 ExtendInfo : (null)
+0x018 BasedAddress : (null)
+0x01c SegmentLock : _EX_PUSH_LOCK
+0x020 u1 : <unnamed-tag>
+0x024 u2 : <unnamed-tag>
+0x028 PrototypePte : 0xc36aba50 _MMPTE
+0x030 ThePtes : [1] _MMPTE
<强> KD＆GT; $$你可以扩展union u2并转储union的FirstMappedVa以查看本节的内容
kd> dt nt!_SEGMENT u2.FirstMappedVa 0xc36aba20
+0x024 u2 :
+0x000 FirstMappedVa : 0x000e0000 Void
转储内容
kd> da 0xe0000
000e0000 "Message from blabb to lieven fro"
000e0020 "m Stack Overflow."
kd>
或者执行！来获取指向第一页的FirstMappedVa
如果内容大于一个页面边界，则获取它们是
有点乏味，因为他们可能已被分页并需要执行
操作，从而处理页面错误以使其进入视图
kd> !ca poi(0xc36aba20)
ControlArea @ 85182d08
Segment c36aba20 Flink 00000000 Blink 00000000
Section Ref 1 Pfn Ref 0 Mapped Views 1
User Ref 2 WaitForDel 0 Flush Count 0
File Object 00000000 ModWriteCount 0 System Views 0
WritableRefs 0
Flags (2000) Commit
Pagefile-backed section
Segment @ c36aba20
ControlArea 85182d08 ExtendInfo 00000000
Total Ptes 1
Segment Size 1000 Committed 1
CreatingProcess 8605ab28 FirstMappedVa e0000 <-------------
ProtoPtes c36aba50
Flags (80000) ProtectionMask
Subsection 1 @ 85182d58
ControlArea 85182d08 Starting Sector 0 Number Of Sectors 0
Base Pte c36aba50 Ptes In Subsect 1 Unused Ptes 0
Flags 8 Sector Offset 0 Protection 4
kd>
答案 1 :(得分：2)
添加另一个答案以显示另一个页面文件支持的部分内容 您可能需要转到创建流程并查看其虚拟地址而不是当前的流程
你可能知道shell在共享部分中保留了一些 global counters
0104: Object: c2255450 GrantedAccess: 00000006 Entry: c5d9b208
Object: c2255450 Type: (84ec6040) Section
ObjectHeader: c2255438 (new version)
HandleCount: 6 PointerCount: 7
Directory Object: 9d662520 Name: windows_shell_global_counters
检索它们的代码
#include <stdio.h>
#include <windows.h>
#include <stdlib.h>
#include <shlwapi.h>
#pragma comment(lib,"shlwapi.lib")
//add all items in the ... place holder in arrays below
PCHAR enuname[] = { "GLOBALCOUNTER_SEARCHMANAGER",...};
int foo [] = { GLOBALCOUNTER_SEARCHMANAGER,...};
void main (void) {
long cval = NULL;
for(int i =0; i < _countof(foo) ;i++) {
cval = SHGlobalCounterGetValue((SHGLOBALCOUNTER)foo[i]);
printf ("%65s = %0x\n" ,enuname[i], cval);
}
}
编译并执行此操作可能会得到这样的结果（请记住，计数器是易变的，因此您可能需要足够快速进行比较）
C:\secobj\shglob>shglob.exe | head -n 13
GLOBALCOUNTER_SEARCHMANAGER = 0
GLOBALCOUNTER_SEARCHOPTIONS = 0
GLOBALCOUNTER_FOLDERSETTINGSCHANGE = 0
GLOBALCOUNTER_RATINGS = 0
GLOBALCOUNTER_APPROVEDSITES = 0
GLOBALCOUNTER_RESTRICTIONS = 5
GLOBALCOUNTER_SHELLSETTINGSCHANGED = 2
GLOBALCOUNTER_SYSTEMPIDLCHANGE = 0
GLOBALCOUNTER_OVERLAYMANAGER = 0
GLOBALCOUNTER_QUERYASSOCIATIONS = 0
GLOBALCOUNTER_IESESSIONS = 0
GLOBALCOUNTER_IEONLY_SESSIONS = 0
GLOBALCOUNTER_APPLICATION_DESTINATIONS = 83
查看当前流程
kd> ? @$proc
Evaluate expression: -2033240552 = 86cf3618
kd> ?? (char *)@$proc->ImageFileName
char * 0x86cf3784
"cdb.exe"
kd> !handle 0 3 @$proc Section
0164: Object: c2255450 GrantedAccess: 00000006 Entry: c3df32c8
Object: c2255450 Type: (84ec6040) Section
ObjectHeader: c2255438 (new version)
HandleCount: 11 PointerCount: 12
Directory Object: 9d662520 Name: windows_shell_global_counters
kd> dc @@c++(((nt!_segment *)((nt!_section_object *) 0xc2255450)->Segment)->u2.FirstMappedVa)
00290000 ???????? ???????? ???????? ???????? ????????????????
00290010 ???????? ???????? ???????? ???????? ????????????????
00290020 ???????? ???????? ???????? ???????? ????????????????
00290030 ???????? ???????? ???????? ???????? ????????????????
00290040 ???????? ???????? ???????? ???????? ????????????????
00290050 ???????? ???????? ???????? ???????? ????????????????
00290060 ???????? ???????? ???????? ???????? ????????????????
00290070 ???????? ???????? ???????? ???????? ????????????????
可能是这个当前进程获得了OpenFileMapping的句柄，但是没有映射它或页面被分页（livekd不能使用pagein）我们似乎无法查看此部分内容
让我们看看谁创建了这个共享部分
kd> ? @@c++(((nt!_segment *)((nt!_section_object *) 0xc2255450)->Segment)->u1.CreatingProcess)
Evaluate expression: -2050635184 = 85c5ca50
kd> !process 85c5ca50 0
PROCESS 85c5ca50 SessionId: 1 Cid: 0af4 Peb: 7ffd9000 ParentCid: 0704
DirBase: 7e271420 ObjectTable: c5d873c8 HandleCount: 888.
Image: explorer.exe
它看起来很合理，explorer.exe似乎创建了这个共享部分
让我们通过从创建过程虚拟地址转储0n13 dwords进行检查
kd> .process /p /r 85c5ca50
kd> dc @@c++(((nt!_segment *)((nt!_section_object *) 0xc2255450)->Segment)->u2.FirstMappedVa) l0n13
00290000 00000000 00000000 00000000 00000000 ................
00290010 00000000 00000005 00000002 00000000 ................
00290020 00000000 00000000 00000000 00000000 ................
00290030 00000083 ....