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<title>在Windows 2003中HOOK ZwCreateProcessEx </title>
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<h1>在Windows 2003中HOOK ZwCreateProcessEx</h1><br>创建时间：2005-03-09<br>文章属性：原创<br>文章提交：<a href='https://www.xfocus.net/bbs/index.php?lang=cn&act=Profile&do=03&MID=35303'>suei8423</a> (suei8423_at_163.com)<br><br>作者：ZwelL<br />
<br />
工作需要，想控制进程的创建，于是HOOK了ZwCreateProcess，后来发现xp和2003中创建进程的都用NtCreateProcessEx(参见[1]）。<br />
但是ZwCreateProcessEx未被ntoskrnl.exe导出，用softice的ntcall命令也没有看到,网上也没有找到相关代码。没办法，跟踪ntoskrnl!ZwCreateProcess<br />
>u ntoskrnl!ZwCreateProcessEx<br />
<br />
_ZwCreateProcess<br />
0008:804e7ae2 bb32000000 mov eax, 00000032<br />
<br />
但是ZwCreateProcessEx有9个参数，最后一个未知，4字节，猜成HANDLE型。<br />
原型如下：<br />
typedef NTSTATUS (*NTCREATEPROCESSEX)(<br />
OUT PHANDLE ProcessHandle,<br />
IN ACCESS_MASK DesiredAccess,<br />
IN POBJECT_ATTRIBUTES ObjectAttributes OPTIONAL,<br />
IN HANDLE ParentProcess,<br />
IN BOOLEAN InheritObjectTable,<br />
IN HANDLE SectionHandle OPTIONAL,<br />
IN HANDLE DebugPort OPTIONAL,<br />
IN HANDLE ExceptionPort OPTIONAL,<br />
IN HANDLE Unknown ); <br />
最终用硬编码HOOK 成功，代码如下：<br />
<br />
<br />
#include "ntddk.h"<br />
#include "stdarg.h"<br />
#include "stdio.h"<br />
#include "ntiologc.h"<br />
<br />
#define DWORD unsigned long<br />
#define WORD unsigned short<br />
#define BOOL unsigned long<br />
<br />
typedef struct ServiceDescriptorEntry {<br />
unsigned int *ServiceTableBase;<br />
unsigned int *ServiceCounterTableBase; //Used only in checked build<br />
unsigned int NumberOfServices;<br />
unsigned char *ParamTableBase;<br />
} ServiceDescriptorTableEntry, *PServiceDescriptorTableEntry;<br />
<br />
extern PServiceDescriptorTableEntry KeServiceDescriptorTable; <br />
<br />
typedef NTSTATUS (*NTCREATEPROCESSEX)(<br />
OUT PHANDLE ProcessHandle,<br />
IN ACCESS_MASK DesiredAccess,<br />
IN POBJECT_ATTRIBUTES ObjectAttributes OPTIONAL,<br />
IN HANDLE ParentProcess,<br />
IN BOOLEAN InheritObjectTable,<br />
IN HANDLE SectionHandle OPTIONAL,<br />
IN HANDLE DebugPort OPTIONAL,<br />
IN HANDLE ExceptionPort OPTIONAL,<br />
IN HANDLE Unknown );<br />
<br />
NTCREATEPROCESSEX OldNtCreateProcessEx;<br />
<br />
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