VC显示网页验证码、模拟CSDN网页登录

这两天，本来想花点时间研究一下QQ空间、农场外挂，于是抓包分析一了下，只可惜，在QQ网页登录时进行了加密处理，可惜我对网页编程一窍不通。有些朋友曾讲过那些是通过JS代码进行加密，可惜我JS也是一片空白，真是“出师未杰身先死”，惭愧惭愧......

于是只好挑CSDN这类简易一些的尝试学习一下（仅供学习交流），下面是学习笔记：

程序运行截图：



1、本机环境：Windows XP SP3、ADSL

2、开发工具：WildPackets OmniPeek V5.1.4

Visual C++ 6.0

IE6.0

FlexEdit V2.3.1871

3、数据包截图：



(QQ登录时，在密码2222加密时卡壳了，我尝试过很多加密算法，最终以失败告终......)

4、验证码显示使用IStream和IPicture来显示：

[cpp] view
plaincopyprint?

/************************************************************************/

/* 函数说明：获取应用程序当前目录

/* 参 数：无

/* 返 回 值：返回目录路径、CString类型字符串

/* By:Koma 2009.10.13 11:23

/************************************************************************/

CString C***Dlg::GetExePath()

{

char pathbuf[260];

int pathlen = ::GetModuleFileName(NULL,pathbuf,260);

// 替换掉单杠

while(TRUE)

{

if(pathbuf[pathlen--]=='//')

break;

}

pathbuf[++pathlen]= 0x0;

CString fname = pathbuf;

return fname;

}

[cpp] view
plaincopyprint?

/************************************************************************/

/* 函数说明：下载验证码图片

/* 参 数：无

/* 返 回 值：无

/* By:Koma 2009.10.13 11:50

/************************************************************************/

void C***Dlg::DownURLImage()

{

CInternetSession session;

CString strUrl;

CFile *pFile,out;

char buff[512];

CString strPath;

// 产生八位随机数数组成验证码

int nRand1 = rand()%100000+10000;

int nRand2 = rand()%200000+10000;

strUrl.Format("http://passport.csdn.net/ShowExPwd.aspx?temp=%d%d",nRand1,nRand2);

strPath = GetExePath() + "//test.tmp";

pFile = session.OpenURL(strUrl);

out.Open(strPath, CFile::modeCreate | CFile::modeWrite);

while(pFile->Read(buff,512)){

out.Write(buff,512);

}

out.Flush();

out.Close();

}

[cpp] view
plaincopyprint?

/************************************************************************/

/* 函数说明：显示验证码图片

/* 参 数：无

/* 返 回 值：无

/* By:Koma 2009.10.13 13:12

/************************************************************************/

void C***Dlg::ShowImage()

{

::CoInitialize(NULL); // 初始化COM

HRESULT hr;

CFile file;

CString strPath;

CPaintDC dc(this);

strPath = GetExePath() + "//test.tmp";

file.Open(strPath, CFile::modeRead | CFile::shareDenyNone);

DWORD dwSize = file.GetLength();

HGLOBAL hMem = ::GlobalAlloc( GMEM_MOVEABLE, dwSize );

LPVOID lpBuf = ::GlobalLock( hMem );

file.ReadHuge( lpBuf, dwSize );

file.Close();

::GlobalUnlock( hMem );

// 由HGLOBAL得到IStream，参数TRUE 表示释放IStream的同时，释放内存

hr = ::CreateStreamOnHGlobal(hMem,TRUE,&pStream );

ASSERT(SUCCEEDED(hr));

hr = ::OleLoadPicture(pStream, dwSize, TRUE, IID_IPicture,(LPVOID *)&pPicture);

ASSERT(hr==S_OK);

long nWidth,nHeight; // 宽高 MM_HIMETRIC模式，单位是0.01毫米

pPicture->get_Width( &nWidth ); // 宽

pPicture->get_Height( &nHeight ); // 高

CSize sz(nWidth,nHeight); // 原大显示

dc.HIMETRICtoDP(&sz); // 转换MM_HIMETRIC模式单位为MM_TEXT像素单位

pPicture->Render(dc.m_hDC,10,100,sz.cx,sz.cy,0,nHeight,nWidth,-nHeight,NULL);

CRect rect(10,100,sz.cx + 10,sz.cy + 100);

// 将图片区域保存，以便后面只刷新图片区域

m_PicRect = rect;

if(pPicture) // 释放IPicture指针

pPicture->Release();

if(pStream) // 释放IStream指针，同时释放hMem

pStream->Release();

::CoUninitialize();

}

5、经过OmniPeek抓包分析得到：

登录时POST格式：

__EVENTTARGET=&__EVENTARGUMENT=&__VIEWSTATE=%2FwEPDwULLTEyMzU0NzEzNDkPFgIeCkZpbmlzaFN0YXlnFgJmD2QWBAIBDxYCHgRUZXh0BQznlKjmiLfnmbvlvZVkAgIPZBYCAgMPZBYCAgEPFgIeB1Zpc2libGVoZBgBBR5fX0NvbnRyb2xzUmVxdWlyZVBvc3RCYWNrS2V5X18WAgUeY3RsMDAkQ1BIX0NvbnRlbnQkY2JfU2F2ZVN0YXRlBR1jdGwwMCRDUEhfQ29udGVudCRJbWFnZV9Mb2dpbjFp31Bt8XH%2B3e%2Bh97Uk6ofQQady&ctl00%24CPH_Content%24tb_LoginNameOrLoginEmail=testkoma&ctl00%24CPH_Content%24tb_Password=ningyusky&ctl00%24CPH_Content%24tb_ExPwd=BZTS3&ClientKey=c77f51c7-cbaf-427d-9314-a04303f79847&ctl00%24CPH_Content%24cb_SaveState=on&from=http%3A%2F%2Fhi.csdn.net%2F&MailParameters=&PrePage=&MailParameters=&ctl00%24CPH_Content%24Image_Login.x=33&ctl00%24CPH_Content%24Image_Login.y=13

至于其他动作的话，自己抓包分析吧！

之前看到博客园深蓝居一篇文章关于C#写的CSDN提交表单

/article/4756982.html

所以在前辈的基础上，我增加了VC获取Cookie ClientKey值，下面是POST代码：

[cpp] view
plaincopyprint?

void C***Dlg::OnBtnLogin()

{

// TODO: Add your control notification handler code here

UpdateData(TRUE);

if(m_strUser.IsEmpty())

{

MessageBox("用户名不能为空！","提示",MB_ICONERROR | MB_OK);

(CEdit*)GetDlgItem(IDC_EDIT_USER)->SetFocus();

return;

}

if( m_strPassword.IsEmpty())

{

MessageBox("密码不能为空！","提示",MB_ICONERROR | MB_OK);

(CEdit*)GetDlgItem(IDC_EDIT_PASSWORD)->SetFocus();

return;

}

CString str;

try

{

CInternetSession Session ;

CHttpConnection *pHttpConnect = Session.GetHttpConnection("passport.csdn.net") ;

if( pHttpConnect )

{

CHttpFile* pFile = pHttpConnect->OpenRequest( CHttpConnection::HTTP_VERB_GET,

_T("/UserLogin.aspx"),

NULL,

1,

NULL,

NULL,

INTERNET_FLAG_NO_COOKIES );

// 获取COOKIE ClientKey值

CInternetSession Session;

Session.OpenURL("http://passport.csdn.net/UserLogin.aspx");

if(!Session.GetCookie("http://passport.csdn.net/UserLogin.aspx",

_T("ClientKey"),m_strCookies))

{

MessageBox("获取Cookies时出错！");

return;

}

CString strKey = m_strCookies;

int result = strKey.Find("ClientKey=",0);

m_strClientKey = strKey.Mid(result+10);

UpdateData(TRUE);

CString szFormData = "__EVENTTARGET=&__EVENTARGUMENT=&__VIEWSTATE=%2FwEPDwULLTE4NDgzMDI2NjcPFgIeCkZpbmlzaFN0YXloFgJmD2QWBAIBDxYCHgRUZXh0BQznlKjmiLfnmbvlvZVkAgIPZBYCAgMPZBYCAgEPFgIeB1Zpc2libGVoZBgBBR5fX0NvbnRyb2xzUmVxdWlyZVBvc3RCYWNrS2V5X18WAgUeY3RsMDAkQ1BIX0NvbnRlbnQkY2JfU2F2ZVN0YXRlBR1jdGwwMCRDUEhfQ29udGVudCRJbWFnZV9Mb2dpbr5SL%2FGtMqVCJ%2FCh4jH%2FXp4DhlVU&ctl00%24CPH_Content%24tb_LoginNameOrLoginEmail="+ m_strUser +"&ctl00%24CPH_Content%24tb_Password="+ m_strPassword +"&ctl00%24CPH_Content%24tb_ExPwd="+ m_strCode +"&ClientKey="+ m_strClientKey +"&ctl00%24CPH_Content%24cb_SaveState=on&from=http%3A%2F%2Fhi.csdn.net%2Fmy.html&MailParameters=&MailParameters=&ctl00%24CPH_Content%24Image_Login.x=26&ctl00%24CPH_Content%24Image_Login.y=11";

if (pFile)

{

pFile->AddRequestHeaders("POST /UserLogin.aspx HTTP/1.1/r/n");

pFile->AddRequestHeaders("Accept: image/gif, image/x-xbitmap, image/jpeg, image/pjpeg, application/x-shockwave-flash, application/vnd.ms-excel, application/vnd.ms-powerpoint, application/msword, application/QVOD, application/QVOD, */*/r/n");

pFile->AddRequestHeaders("Referer: http://passport.csdn.net/UserLogin.aspx/r/n");
pFile->AddRequestHeaders("Accept-Language: zh-cn/r/n");

pFile->AddRequestHeaders("Content-Type: application/x-www-form-urlencoded/r/n");

pFile->AddRequestHeaders("Accept-Encoding: gzip, deflate/r/n");

pFile->AddRequestHeaders("User-Agent: Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1; SV1; POTU(RR:28031409:0:5513822); Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1; SV1) ; .NET CLR 2.0.50727; CIBA)/r/n");

pFile->AddRequestHeaders("Connection: Keep-Alive/r/n");

pFile->AddRequestHeaders("Cache-Control: no-cache/r/n");

pFile->AddRequestHeaders(szFormData);

pFile->SendRequest();

// 返回的HTML

CString s ;

while (pFile->ReadString(s))

str += s ;

//MessageBox(str);

pFile->Close();

delete pFile ;

}

CFile file;

file.Open("Test.aspx",CFile::modeCreate | CFile::modeWrite,NULL);

file.Write(str,str.GetLength());

file.Flush();

file.Close();

pHttpConnect->Close() ;

delete pHttpConnect ;

}

wchar_t* pWChar = NULL;

DWORD nLen1;

// 将新浪网页UTF-8格式编码转换成Unicode

nLen1 = MultiByteToWideChar(CP_UTF8,0,str,str.GetLength(),pWChar,0);

pWChar = new wchar_t[nLen1 + 1];

memset(pWChar,0,(nLen1 + 1 ) * sizeof(wchar_t));

MultiByteToWideChar(CP_UTF8,0,str,str.GetLength(),pWChar,nLen1);

char* pChar = NULL;

DWORD nLen2;

nLen2 = WideCharToMultiByte(CP_ACP,0,pWChar,nLen1,pChar,0,NULL,NULL);

pChar = new char[nLen2 + 1];

memset(pChar,0, nLen2 + 1);

WideCharToMultiByte(CP_ACP,0,pWChar,nLen1,pChar,nLen2,NULL,NULL);

// 查找登录时服务器时返回的信息

str.Format("%s",pChar);

MessageBox(str);

}

catch( CInternetException *e )

{

e->Delete();

}

}