DDR爱好者之家 Design By 杰米
by jno
2007-11-29
http://www.ph4nt0m.org
当你第一次用expression方式来xss时，你肯定傻眼了，不停弹框，没法关闭浏览器，最终你只能祭出任务管理器将进程结束。也许你其他TAB页正有填到一半尚未提交的表单，你就这样被expression给日了，心里非常郁闷，于是就要想办法干它。
很多人第一反应就是cookie，没错这是个好办法：
<div style="width: expression(if(document.cookie.indexOf('xxxx')<0){alert(1);document.cookie='xxxx=1;'+document.cookie;})"></div>
不过这样写有个问题，就是被攻击者浏览器只能执行一次你的alert，cookie的作用域大于一次页面执行，适合用来做跨页面的标识，而不是仅仅用来控制一个页面里的某段代码的执行次数，而且你测试起来也挺麻烦，弄得不好就要清cookie。
循着这个思路很自然就会想到在页面里设置标识，于是就有了第二种方法：
<div style="width: expression(if(!window.xxx){alert(1);window.xxx=1;})"></div>
使用全局变量来做标识，使我的代码在这个页面级别只执行一次，这样是一个比较完美的办法，也是目前被使用的最多的办法。
但是到这里总还觉得不爽，虽然我的alert只被执行了一次，但是判断代码还是在被不停的执行，我们还是在被它日，只不过感觉不出来而已了，我们的目标是日它，办法就是执行完我们的代码后删除这条expression，翻阅MSDN你很快能找到合适的方法：
object.style.removeExpression(sPropertyName)
看起来很美，可是你把这个语句放进expression内部用它来删除expression自身却怎么也不能成功，该死的alert还是会一遍遍的弹出来。使用setTimeout延迟执行？失败；使用execScript在全局执行？失败；结合setTimeout和execScript在延迟在全局执行？还是失败；在body尾部append一个外部script来执行？失败；在body尾部append一个外部script并且setTimeout 延迟并且execScript全局执行？草，终于tmd成功了：
<!------1.htm------>
<html>
<style>
body {
width: expression(eval(String.fromCharCode(0x61,0x6C,0x65,0x72,0x74,0x28,0x31,0x29,0x3B,0x69,0x66,0x28,0x64,0x6F,0x63,0x75,0x6D,0x65,0x6E,0x74,0x2E,0x62,0x6F,0x64,0x79,0x29,0x7B,0x76,0x61,0x72,0x20,0x73,0x3D,0x64,0x6F,0x63,0x75,0x6D,0x65,0x6E,0x74,0x2E,0x63,0x72,0x65,0x61,0x74,0x65,0x45,0x6C,0x65,0x6D,0x65,0x6E,0x74,0x28,0x22,0x73,0x63,0x72,0x69,0x70,0x74,0x22,0x29,0x3B,0x64,0x6F,0x63,0x75,0x6D,0x65,0x6E,0x74,0x2E,0x62,0x6F,0x64,0x79,0x2E,0x61,0x70,0x70,0x65,0x6E,0x64,0x43,0x68,0x69,0x6C,0x64,0x28,0x73,0x29,0x3B,0x73,0x2E,0x73,0x72,0x63,0x3D,0x22,0x31,0x2E,0x6A,0x73,0x22,0x3B,0x7D)));
/*alert(1);if(document.body){var s=document.createElement("script");document.body.appendChild(s);s.src="/UploadFiles/2021-04-02/1.js">}
</style>
<body>
</body>
</html>
//--------1.js---------//
setTimeout(function(){execScript("document.body.style.removeExpression(\"width\")");}, 0);
可是还有那么一点不完美，就是无论怎么样，最少也要执行两次，不过我爽了，总算把这个expression给日了。当然如果你是个完美主义者，可以用这个方法结合if(!window.xxx)法。
各位看官看到这里，可能已经严重怀疑我是被虐狂，这么多方法测试下来，我还不弹框框弹到崩溃？其实我并非浪得虚名，测之前早有准备，先厚者脸皮去幻影邮件列表跪求alert框框原理，没想到大家非常热情地给予帮助，最终zzzevazzz大侠最先找到实现API是MessageBoxIndirectW，从 win2k源代码中觅得。然后又花上半日工夫草成一个hook MessageBoxIndirectW的小工具，可惜又遇到个小问题至今没有解决，这个函数的参数是个MSGBOXPARAMS结构体：
typedef struct {
UINT cbSize;
HWND hwndOwner;
HINSTANCE hInstance;
LPCTSTR lpszText;
LPCTSTR lpszCaption;
DWORD dwStyle;
LPCTSTR lpszIcon;
DWORD_PTR dwContextHelpId;
MSGBOXCALLBACK lpfnMsgBoxCallback;
DWORD dwLanguageId;
} MSGBOXPARAMS, *PMSGBOXPARAMS;
我写了个小程序测试发现只要把hwndOwner和dwStyle都置为0，这个对跨框就不是模态的，父窗口点关闭也可以关闭程序，我hook的目的也在于此，可是在IE里具体测试的时候，发现即使对话框不是模态的，我点关闭IE按钮也没法关闭IE窗口，所以这个方法只针对有TAB页的IE7有意义，对话框非模态后，我可以切换到其他TAB页去并关闭弹框的TAB页，但是对于IE6来说不能点关闭就没有意义，于是我干脆也不修改什么参数了，直接把这个函数返回掉了，代码在最后附上。
至此，我和expression的恩怨总算可以告一段落，整个世界清静了。
/*
* FileName: IEAlertPatch.c
* Version: 1.0
* Contact: luoluonet@yahoo.cn
* P.S: Thanks zzzEVAzzz, he found out the API that alert uses.
*/
#include <Windows.h>
#include <Tlhelp32.h>
#include <Imagehlp.h>
#pragma comment(lib, "advapi32.lib")
//
// function prototype
//
DWORD WINAPI GetProcessIdByName(LPCTSTR lpProcessName);
__inline HookProc();
BOOL WINAPI HookAlert(DWORD pId);
LPVOID GetSC(LPVOID lpProc, DWORD* dwLen, DWORD dwReserved);
//
// start of winmain
//
int APIENTRY WinMain(HINSTANCE hInstance, HINSTANCE hPreInstance, LPSTR lpCmdLine, int nCmdShow)
{
DWORD pId;
OSVERSIONINFOEX osvi;
BOOL bRet;
TCHAR procName[] = TEXT("iexplore.exe");
ZeroMemory(&osvi, sizeof(OSVERSIONINFOEX));
osvi.dwOSVersionInfoSize = sizeof(OSVERSIONINFOEX);
//
// Get system version
//
bRet = GetVersionEx((OSVERSIONINFO *)&osvi);
if (! bRet)
{
osvi.dwOSVersionInfoSize = sizeof(OSVERSIONINFO);
bRet = GetVersionEx((OSVERSIONINFO *)&osvi);
if (! bRet)
goto FreeAndExit;
}
// Verify if it is NT system
if (osvi.dwPlatformId == VER_PLATFORM_WIN32_NT)
{
pId = GetProcessIdByName(procName);
if (pId != 0)
HookAlert(pId);
}
FreeAndExit:
return 0;
}
//
// End of WinMain
//
//
// @Name: GetProcessIdByName
// @Author: luoluo
// @Time: 2005-04-17
// @Param: lpProcessName spacifies the ProcessName
// @Ret: if success, return the process id
// if failed, return 0
//
DWORD WINAPI GetProcessIdByName(LPCTSTR lpProcessName)
{
HANDLE hSnapshot;
DWORD dwRet = 0;
LPPROCESSENTRY32 pPe32;
BOOL bRet;
// Get all the processes in the snapshot
hSnapshot = CreateToolhelp32Snapshot(0x00000002, 0);
if (hSnapshot == INVALID_HANDLE_VALUE)
{
goto FreeAndExit;
}
pPe32 = (LPPROCESSENTRY32)malloc(sizeof(PROCESSENTRY32));
ZeroMemory(pPe32, sizeof(PROCESSENTRY32));
pPe32->dwSize = sizeof(PROCESSENTRY32);
// Get the first process
bRet = Process32First(hSnapshot, pPe32);
if (! bRet)
{
goto FreeAndExit;
}
if (stricmp(lpProcessName, pPe32->szExeFile) == 0)
{
dwRet = pPe32->th32ProcessID;
goto FreeAndExit;
}
// Travesal the left processes
while (TRUE)
{
bRet = Process32Next(hSnapshot, pPe32);
if (! bRet)
{
goto FreeAndExit;
}
if (stricmp(lpProcessName, pPe32->szExeFile) == 0)
{
dwRet = pPe32->th32ProcessID;
goto FreeAndExit;
}
}
FreeAndExit:
if (pPe32 != NULL) free(pPe32);
if (hSnapshot != NULL) CloseHandle(hSnapshot);
return dwRet;
}
__inline __declspec(naked) HookProc()
{
__asm
{
leave
retn 4
/*
push esi
mov esi, [ebp+8h]
mov dword ptr [esi+4h], 0h // modify the hwnd
mov dword ptr [esi+14h], 0h // modify the type
pop esi
*/
_emit 90h
_emit 90h
_emit 90h
_emit 90h
}
}
LPVOID GetSC(LPVOID lpProc, DWORD* dwLen, DWORD dwReserved)
{
LPVOID lpProc1 = NULL;
LPVOID lpSC = NULL;
__asm
{
push ebx
mov ebx, lpProc
dec ebx
_loop:
inc ebx
cmp dword ptr [ebx], 90909090h
jne _loop
mov lpProc1, ebx
pop ebx
}
*dwLen = (DWORD)lpProc1 - (DWORD)lpProc;
lpSC = malloc(*dwLen + dwReserved);
memset(lpSC, 0, *dwLen + dwReserved);
memcpy(lpSC, lpProc, *dwLen);
*dwLen += dwReserved;
return lpSC;
}
BOOL WINAPI HookAlert(DWORD pId)
{
HMODULE hModule = NULL;
DWORD dwMessageBoxIndirectW = 0;
HANDLE hProcess;
HANDLE hToken;
TOKEN_PRIVILEGES tkp;
BOOL bRet = FALSE;
BOOL bRetVal;
LPVOID lpCodeMemory;
MEMORY_BASIC_INFORMATION mbi;
SIZE_T szRet;
DWORD dwOldProtect;
DWORD dwJmpOffset = 0;
unsigned char szJmpCode[5] = {0};
unsigned char szOldCode[5] = {0};
LPVOID lpHookCode = NULL;
DWORD dwHookCodeLen = 0;
hModule = LoadLibrary("user32.dll");
dwMessageBoxIndirectW = (DWORD)GetProcAddress(hModule, "MessageBoxIndirectW");
lpHookCode = GetSC(&HookProc, &dwHookCodeLen, 10);
if (lpHookCode == NULL)
{
goto FreeAndExit;
}
// Open process token to ajust privileges
bRetVal = OpenProcessToken(GetCurrentProcess(), TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
if (! bRetVal)
{
goto FreeAndExit;
}
// Get the LUID for debug privilege
bRetVal = LookupPrivilegeValue(NULL, SE_DEBUG_NAME, &tkp.Privileges[0].Luid);
if (! bRetVal)
{
goto FreeAndExit;
}
tkp.PrivilegeCount = 1;
tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
// Adjust token privileges
bRetVal = AdjustTokenPrivileges(hToken, FALSE, &tkp, sizeof(&tkp), (PTOKEN_PRIVILEGES)NULL, 0);
if (! bRetVal)
{
goto FreeAndExit;
}
// Open remote process
hProcess = OpenProcess(PROCESS_VM_OPERATION | PROCESS_VM_READ | PROCESS_VM_WRITE | PROCESS_QUERY_INFORMATION, FALSE, pId);
if (hProcess == NULL)
{
goto FreeAndExit;
}
// Read 5 byte from function to be hooked
bRetVal = ReadProcessMemory(hProcess, (LPCVOID)dwMessageBoxIndirectW, szOldCode, sizeof(szOldCode), NULL);
if (! bRetVal)
{
goto FreeAndExit;
}
// Allocate memory from remote process
lpCodeMemory = VirtualAllocEx(hProcess, NULL, dwHookCodeLen, MEM_COMMIT, PAGE_EXECUTE_READWRITE);
if (lpCodeMemory == NULL)
{
goto FreeAndExit;
}
// Query the page information
ZeroMemory(&mbi, sizeof(MEMORY_BASIC_INFORMATION));
szRet = VirtualQueryEx(hProcess, lpCodeMemory, &mbi, sizeof(MEMORY_BASIC_INFORMATION));
if (szRet == 0)
{
goto FreeAndExit;
}
// Modify the page protection for write
bRetVal = VirtualProtectEx(hProcess, mbi.BaseAddress, mbi.RegionSize, PAGE_EXECUTE_READWRITE, &mbi.Protect);
if (! bRetVal)
{
goto FreeAndExit;
}
// the function has been hooked
if (szOldCode[0] == ((unsigned char)'\xE9'))
{
dwJmpOffset = (*((int*)(szOldCode + 1))) + dwMessageBoxIndirectW + 5 - ((DWORD)lpCodeMemory) - dwHookCodeLen + 5;
memcpy(szOldCode + 1, (LPVOID)(&dwJmpOffset), 4);
}
// debugger present and breakpoint here
if (szOldCode[0] == '\xCC')
{
goto FreeAndExit;
}
// copy the start code of funciton hooked to the end of hook code
memcpy((LPVOID)(((DWORD)lpHookCode) + dwHookCodeLen - 10), szOldCode, sizeof(szOldCode));
// code jmp back to function hooked
memset((LPVOID)(((DWORD)lpHookCode) + dwHookCodeLen - 5), '\xE9', 1);
dwJmpOffset = dwMessageBoxIndirectW - ((DWORD)lpCodeMemory) - dwHookCodeLen + 5;
memcpy((LPVOID)(((DWORD)lpHookCode) + dwHookCodeLen - 4), (LPVOID)(&dwJmpOffset), 4);
// Write my code to remote process memory
bRetVal = WriteProcessMemory(hProcess, lpCodeMemory, lpHookCode, dwHookCodeLen, 0);
if (! bRetVal)
{
VirtualFreeEx(hProcess, lpCodeMemory, dwHookCodeLen, MEM_RELEASE);
goto FreeAndExit;
}
// Modify the page protection to protect
bRetVal = VirtualProtectEx(hProcess, mbi.BaseAddress, mbi.RegionSize, mbi.Protect, &dwOldProtect);
if (! bRetVal)
{
goto FreeAndExit;
}
// hook code
szJmpCode[0] = '\xE9'; // jmp
dwJmpOffset = ((DWORD)lpCodeMemory) - dwMessageBoxIndirectW - 5;
memcpy(szJmpCode + 1, (LPVOID)(&dwJmpOffset), 4);
// Query the page information
ZeroMemory(&mbi, sizeof(MEMORY_BASIC_INFORMATION));
szRet = VirtualQueryEx(hProcess, (LPVOID)dwMessageBoxIndirectW, &mbi, sizeof(MEMORY_BASIC_INFORMATION));
if (szRet == 0)
{
goto FreeAndExit;
}
// Modify the page protection for write
bRetVal = VirtualProtectEx(hProcess, mbi.BaseAddress, mbi.RegionSize, PAGE_EXECUTE_READWRITE, &mbi.Protect);
if (! bRetVal)
{
goto FreeAndExit;
}
// Write hook code to the functon to be hooked
bRetVal = WriteProcessMemory(hProcess, (LPVOID)dwMessageBoxIndirectW, szJmpCode, sizeof(szJmpCode), 0);
if (! bRetVal)
{
goto FreeAndExit;
}
// Modify the page protection to protect
bRetVal = VirtualProtectEx(hProcess, mbi.BaseAddress, mbi.RegionSize, mbi.Protect, &dwOldProtect);
if (! bRetVal)
{
goto FreeAndExit;
}
FreeAndExit:
if (hProcess != NULL)
{
CloseHandle(hProcess);
}
if (hToken != NULL)
{
CloseHandle(hToken);
}
if (lpHookCode != NULL)
{
free(lpHookCode);
lpHookCode = NULL;
}
return bRet;
}
2007-11-29
http://www.ph4nt0m.org
当你第一次用expression方式来xss时，你肯定傻眼了，不停弹框，没法关闭浏览器，最终你只能祭出任务管理器将进程结束。也许你其他TAB页正有填到一半尚未提交的表单，你就这样被expression给日了，心里非常郁闷，于是就要想办法干它。
很多人第一反应就是cookie，没错这是个好办法：
<div style="width: expression(if(document.cookie.indexOf('xxxx')<0){alert(1);document.cookie='xxxx=1;'+document.cookie;})"></div>
不过这样写有个问题，就是被攻击者浏览器只能执行一次你的alert，cookie的作用域大于一次页面执行，适合用来做跨页面的标识，而不是仅仅用来控制一个页面里的某段代码的执行次数，而且你测试起来也挺麻烦，弄得不好就要清cookie。
循着这个思路很自然就会想到在页面里设置标识，于是就有了第二种方法：
<div style="width: expression(if(!window.xxx){alert(1);window.xxx=1;})"></div>
使用全局变量来做标识，使我的代码在这个页面级别只执行一次，这样是一个比较完美的办法，也是目前被使用的最多的办法。
但是到这里总还觉得不爽，虽然我的alert只被执行了一次，但是判断代码还是在被不停的执行，我们还是在被它日，只不过感觉不出来而已了，我们的目标是日它，办法就是执行完我们的代码后删除这条expression，翻阅MSDN你很快能找到合适的方法：
object.style.removeExpression(sPropertyName)
看起来很美，可是你把这个语句放进expression内部用它来删除expression自身却怎么也不能成功，该死的alert还是会一遍遍的弹出来。使用setTimeout延迟执行？失败；使用execScript在全局执行？失败；结合setTimeout和execScript在延迟在全局执行？还是失败；在body尾部append一个外部script来执行？失败；在body尾部append一个外部script并且setTimeout 延迟并且execScript全局执行？草，终于tmd成功了：
<!------1.htm------>
<html>
<style>
body {
width: expression(eval(String.fromCharCode(0x61,0x6C,0x65,0x72,0x74,0x28,0x31,0x29,0x3B,0x69,0x66,0x28,0x64,0x6F,0x63,0x75,0x6D,0x65,0x6E,0x74,0x2E,0x62,0x6F,0x64,0x79,0x29,0x7B,0x76,0x61,0x72,0x20,0x73,0x3D,0x64,0x6F,0x63,0x75,0x6D,0x65,0x6E,0x74,0x2E,0x63,0x72,0x65,0x61,0x74,0x65,0x45,0x6C,0x65,0x6D,0x65,0x6E,0x74,0x28,0x22,0x73,0x63,0x72,0x69,0x70,0x74,0x22,0x29,0x3B,0x64,0x6F,0x63,0x75,0x6D,0x65,0x6E,0x74,0x2E,0x62,0x6F,0x64,0x79,0x2E,0x61,0x70,0x70,0x65,0x6E,0x64,0x43,0x68,0x69,0x6C,0x64,0x28,0x73,0x29,0x3B,0x73,0x2E,0x73,0x72,0x63,0x3D,0x22,0x31,0x2E,0x6A,0x73,0x22,0x3B,0x7D)));
/*alert(1);if(document.body){var s=document.createElement("script");document.body.appendChild(s);s.src="/UploadFiles/2021-04-02/1.js">}
</style>
<body>
</body>
</html>
//--------1.js---------//
setTimeout(function(){execScript("document.body.style.removeExpression(\"width\")");}, 0);
可是还有那么一点不完美，就是无论怎么样，最少也要执行两次，不过我爽了，总算把这个expression给日了。当然如果你是个完美主义者，可以用这个方法结合if(!window.xxx)法。
各位看官看到这里，可能已经严重怀疑我是被虐狂，这么多方法测试下来，我还不弹框框弹到崩溃？其实我并非浪得虚名，测之前早有准备，先厚者脸皮去幻影邮件列表跪求alert框框原理，没想到大家非常热情地给予帮助，最终zzzevazzz大侠最先找到实现API是MessageBoxIndirectW，从 win2k源代码中觅得。然后又花上半日工夫草成一个hook MessageBoxIndirectW的小工具，可惜又遇到个小问题至今没有解决，这个函数的参数是个MSGBOXPARAMS结构体：
typedef struct {
UINT cbSize;
HWND hwndOwner;
HINSTANCE hInstance;
LPCTSTR lpszText;
LPCTSTR lpszCaption;
DWORD dwStyle;
LPCTSTR lpszIcon;
DWORD_PTR dwContextHelpId;
MSGBOXCALLBACK lpfnMsgBoxCallback;
DWORD dwLanguageId;
} MSGBOXPARAMS, *PMSGBOXPARAMS;
我写了个小程序测试发现只要把hwndOwner和dwStyle都置为0，这个对跨框就不是模态的，父窗口点关闭也可以关闭程序，我hook的目的也在于此，可是在IE里具体测试的时候，发现即使对话框不是模态的，我点关闭IE按钮也没法关闭IE窗口，所以这个方法只针对有TAB页的IE7有意义，对话框非模态后，我可以切换到其他TAB页去并关闭弹框的TAB页，但是对于IE6来说不能点关闭就没有意义，于是我干脆也不修改什么参数了，直接把这个函数返回掉了，代码在最后附上。
至此，我和expression的恩怨总算可以告一段落，整个世界清静了。
/*
* FileName: IEAlertPatch.c
* Version: 1.0
* Contact: luoluonet@yahoo.cn
* P.S: Thanks zzzEVAzzz, he found out the API that alert uses.
*/
#include <Windows.h>
#include <Tlhelp32.h>
#include <Imagehlp.h>
#pragma comment(lib, "advapi32.lib")
//
// function prototype
//
DWORD WINAPI GetProcessIdByName(LPCTSTR lpProcessName);
__inline HookProc();
BOOL WINAPI HookAlert(DWORD pId);
LPVOID GetSC(LPVOID lpProc, DWORD* dwLen, DWORD dwReserved);
//
// start of winmain
//
int APIENTRY WinMain(HINSTANCE hInstance, HINSTANCE hPreInstance, LPSTR lpCmdLine, int nCmdShow)
{
DWORD pId;
OSVERSIONINFOEX osvi;
BOOL bRet;
TCHAR procName[] = TEXT("iexplore.exe");
ZeroMemory(&osvi, sizeof(OSVERSIONINFOEX));
osvi.dwOSVersionInfoSize = sizeof(OSVERSIONINFOEX);
//
// Get system version
//
bRet = GetVersionEx((OSVERSIONINFO *)&osvi);
if (! bRet)
{
osvi.dwOSVersionInfoSize = sizeof(OSVERSIONINFO);
bRet = GetVersionEx((OSVERSIONINFO *)&osvi);
if (! bRet)
goto FreeAndExit;
}
// Verify if it is NT system
if (osvi.dwPlatformId == VER_PLATFORM_WIN32_NT)
{
pId = GetProcessIdByName(procName);
if (pId != 0)
HookAlert(pId);
}
FreeAndExit:
return 0;
}
//
// End of WinMain
//
//
// @Name: GetProcessIdByName
// @Author: luoluo
// @Time: 2005-04-17
// @Param: lpProcessName spacifies the ProcessName
// @Ret: if success, return the process id
// if failed, return 0
//
DWORD WINAPI GetProcessIdByName(LPCTSTR lpProcessName)
{
HANDLE hSnapshot;
DWORD dwRet = 0;
LPPROCESSENTRY32 pPe32;
BOOL bRet;
// Get all the processes in the snapshot
hSnapshot = CreateToolhelp32Snapshot(0x00000002, 0);
if (hSnapshot == INVALID_HANDLE_VALUE)
{
goto FreeAndExit;
}
pPe32 = (LPPROCESSENTRY32)malloc(sizeof(PROCESSENTRY32));
ZeroMemory(pPe32, sizeof(PROCESSENTRY32));
pPe32->dwSize = sizeof(PROCESSENTRY32);
// Get the first process
bRet = Process32First(hSnapshot, pPe32);
if (! bRet)
{
goto FreeAndExit;
}
if (stricmp(lpProcessName, pPe32->szExeFile) == 0)
{
dwRet = pPe32->th32ProcessID;
goto FreeAndExit;
}
// Travesal the left processes
while (TRUE)
{
bRet = Process32Next(hSnapshot, pPe32);
if (! bRet)
{
goto FreeAndExit;
}
if (stricmp(lpProcessName, pPe32->szExeFile) == 0)
{
dwRet = pPe32->th32ProcessID;
goto FreeAndExit;
}
}
FreeAndExit:
if (pPe32 != NULL) free(pPe32);
if (hSnapshot != NULL) CloseHandle(hSnapshot);
return dwRet;
}
__inline __declspec(naked) HookProc()
{
__asm
{
leave
retn 4
/*
push esi
mov esi, [ebp+8h]
mov dword ptr [esi+4h], 0h // modify the hwnd
mov dword ptr [esi+14h], 0h // modify the type
pop esi
*/
_emit 90h
_emit 90h
_emit 90h
_emit 90h
}
}
LPVOID GetSC(LPVOID lpProc, DWORD* dwLen, DWORD dwReserved)
{
LPVOID lpProc1 = NULL;
LPVOID lpSC = NULL;
__asm
{
push ebx
mov ebx, lpProc
dec ebx
_loop:
inc ebx
cmp dword ptr [ebx], 90909090h
jne _loop
mov lpProc1, ebx
pop ebx
}
*dwLen = (DWORD)lpProc1 - (DWORD)lpProc;
lpSC = malloc(*dwLen + dwReserved);
memset(lpSC, 0, *dwLen + dwReserved);
memcpy(lpSC, lpProc, *dwLen);
*dwLen += dwReserved;
return lpSC;
}
BOOL WINAPI HookAlert(DWORD pId)
{
HMODULE hModule = NULL;
DWORD dwMessageBoxIndirectW = 0;
HANDLE hProcess;
HANDLE hToken;
TOKEN_PRIVILEGES tkp;
BOOL bRet = FALSE;
BOOL bRetVal;
LPVOID lpCodeMemory;
MEMORY_BASIC_INFORMATION mbi;
SIZE_T szRet;
DWORD dwOldProtect;
DWORD dwJmpOffset = 0;
unsigned char szJmpCode[5] = {0};
unsigned char szOldCode[5] = {0};
LPVOID lpHookCode = NULL;
DWORD dwHookCodeLen = 0;
hModule = LoadLibrary("user32.dll");
dwMessageBoxIndirectW = (DWORD)GetProcAddress(hModule, "MessageBoxIndirectW");
lpHookCode = GetSC(&HookProc, &dwHookCodeLen, 10);
if (lpHookCode == NULL)
{
goto FreeAndExit;
}
// Open process token to ajust privileges
bRetVal = OpenProcessToken(GetCurrentProcess(), TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
if (! bRetVal)
{
goto FreeAndExit;
}
// Get the LUID for debug privilege
bRetVal = LookupPrivilegeValue(NULL, SE_DEBUG_NAME, &tkp.Privileges[0].Luid);
if (! bRetVal)
{
goto FreeAndExit;
}
tkp.PrivilegeCount = 1;
tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
// Adjust token privileges
bRetVal = AdjustTokenPrivileges(hToken, FALSE, &tkp, sizeof(&tkp), (PTOKEN_PRIVILEGES)NULL, 0);
if (! bRetVal)
{
goto FreeAndExit;
}
// Open remote process
hProcess = OpenProcess(PROCESS_VM_OPERATION | PROCESS_VM_READ | PROCESS_VM_WRITE | PROCESS_QUERY_INFORMATION, FALSE, pId);
if (hProcess == NULL)
{
goto FreeAndExit;
}
// Read 5 byte from function to be hooked
bRetVal = ReadProcessMemory(hProcess, (LPCVOID)dwMessageBoxIndirectW, szOldCode, sizeof(szOldCode), NULL);
if (! bRetVal)
{
goto FreeAndExit;
}
// Allocate memory from remote process
lpCodeMemory = VirtualAllocEx(hProcess, NULL, dwHookCodeLen, MEM_COMMIT, PAGE_EXECUTE_READWRITE);
if (lpCodeMemory == NULL)
{
goto FreeAndExit;
}
// Query the page information
ZeroMemory(&mbi, sizeof(MEMORY_BASIC_INFORMATION));
szRet = VirtualQueryEx(hProcess, lpCodeMemory, &mbi, sizeof(MEMORY_BASIC_INFORMATION));
if (szRet == 0)
{
goto FreeAndExit;
}
// Modify the page protection for write
bRetVal = VirtualProtectEx(hProcess, mbi.BaseAddress, mbi.RegionSize, PAGE_EXECUTE_READWRITE, &mbi.Protect);
if (! bRetVal)
{
goto FreeAndExit;
}
// the function has been hooked
if (szOldCode[0] == ((unsigned char)'\xE9'))
{
dwJmpOffset = (*((int*)(szOldCode + 1))) + dwMessageBoxIndirectW + 5 - ((DWORD)lpCodeMemory) - dwHookCodeLen + 5;
memcpy(szOldCode + 1, (LPVOID)(&dwJmpOffset), 4);
}
// debugger present and breakpoint here
if (szOldCode[0] == '\xCC')
{
goto FreeAndExit;
}
// copy the start code of funciton hooked to the end of hook code
memcpy((LPVOID)(((DWORD)lpHookCode) + dwHookCodeLen - 10), szOldCode, sizeof(szOldCode));
// code jmp back to function hooked
memset((LPVOID)(((DWORD)lpHookCode) + dwHookCodeLen - 5), '\xE9', 1);
dwJmpOffset = dwMessageBoxIndirectW - ((DWORD)lpCodeMemory) - dwHookCodeLen + 5;
memcpy((LPVOID)(((DWORD)lpHookCode) + dwHookCodeLen - 4), (LPVOID)(&dwJmpOffset), 4);
// Write my code to remote process memory
bRetVal = WriteProcessMemory(hProcess, lpCodeMemory, lpHookCode, dwHookCodeLen, 0);
if (! bRetVal)
{
VirtualFreeEx(hProcess, lpCodeMemory, dwHookCodeLen, MEM_RELEASE);
goto FreeAndExit;
}
// Modify the page protection to protect
bRetVal = VirtualProtectEx(hProcess, mbi.BaseAddress, mbi.RegionSize, mbi.Protect, &dwOldProtect);
if (! bRetVal)
{
goto FreeAndExit;
}
// hook code
szJmpCode[0] = '\xE9'; // jmp
dwJmpOffset = ((DWORD)lpCodeMemory) - dwMessageBoxIndirectW - 5;
memcpy(szJmpCode + 1, (LPVOID)(&dwJmpOffset), 4);
// Query the page information
ZeroMemory(&mbi, sizeof(MEMORY_BASIC_INFORMATION));
szRet = VirtualQueryEx(hProcess, (LPVOID)dwMessageBoxIndirectW, &mbi, sizeof(MEMORY_BASIC_INFORMATION));
if (szRet == 0)
{
goto FreeAndExit;
}
// Modify the page protection for write
bRetVal = VirtualProtectEx(hProcess, mbi.BaseAddress, mbi.RegionSize, PAGE_EXECUTE_READWRITE, &mbi.Protect);
if (! bRetVal)
{
goto FreeAndExit;
}
// Write hook code to the functon to be hooked
bRetVal = WriteProcessMemory(hProcess, (LPVOID)dwMessageBoxIndirectW, szJmpCode, sizeof(szJmpCode), 0);
if (! bRetVal)
{
goto FreeAndExit;
}
// Modify the page protection to protect
bRetVal = VirtualProtectEx(hProcess, mbi.BaseAddress, mbi.RegionSize, mbi.Protect, &dwOldProtect);
if (! bRetVal)
{
goto FreeAndExit;
}
FreeAndExit:
if (hProcess != NULL)
{
CloseHandle(hProcess);
}
if (hToken != NULL)
{
CloseHandle(hToken);
}
if (lpHookCode != NULL)
{
free(lpHookCode);
lpHookCode = NULL;
}
return bRet;
}
DDR爱好者之家 Design By 杰米
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DDR爱好者之家 Design By 杰米
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稳了！魔兽国服回归的3条重磅消息！官宣时间再确认！
昨天有一位朋友在大神群里分享，自己亚服账号被封号之后居然弹出了国服的封号信息对话框。
这里面让他访问的是一个国服的战网网址，com.cn和后面的zh都非常明白地表明这就是国服战网。
而他在复制这个网址并且进行登录之后，确实是网易的网址，也就是我们熟悉的停服之后国服发布的暴雪游戏产品运营到期开放退款的说明。这是一件比较奇怪的事情，因为以前都没有出现这样的情况，现在突然提示跳转到国服战网的网址，是不是说明了简体中文客户端已经开始进行更新了呢？
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2024年12月24日
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