C ++ implements simulated logon-Send the post form information package

C ++ implements simulated logon-Send the post form information package

 

Test URL ip: 222.73.24.32

Test account: lzh_2

Password 123456789

 

First, determine the information of the submission form. I captured the post package using the packet capture tool, and then wrote a program to simulate the sending process, realizing the login process.

 

Note:

1. The packet capture information must be sent, and even the number of spaces and line breaks must be the same;

2. The simulated logon webpage does not have a verification code;

 

Code:

 

// Post sends form information to simulate logon # include
 
  
# Include
  
   
# Include
   
    
# Include
    
     
# Include
     
      
# Include
      
        # Pragma comment (lib, ws2_32.lib) # define max 20480 using namespace std; int main () {int num, sum; SOCKET s; WSADATA wsa; struct sockaddr_in serv; char sndBuf [max], rcvBuf [max]; WSAStartup (MAKEWORD (2, 1), & wsa); if (s = socket (AF_INET, SOCK_STREAM, 0 )) <0) {perror (socket error !); Exit (1);} memset (& serv, 0, sizeof (serv); serv. sin_family = AF_INET; serv. sin_port = htons (80); // serv. sin_addr.s_addr = * (int *) * host_addr-> h_addr_list); serv. sin_addr.S_un.S_addr = inet_addr (222.73.24.32); if (connect (s, (struct sockaddr *) & serv, sizeof (serv) <0) {perror (connet error !); Exit (1);} memset (sndBuf, 0, max); memset (rcvBuf, 0, max); // header information strcat (sndBuf, POST); strcat (sndBuf, /inc/Check. asp HTTP/1.1); strcat (sndBuf, x-requested-with: XMLHttpRequest); strcat (sndBuf, Accept-Language: zh-cn); strcat (sndBuf, Referer: http://user.exam8.com/user_login.asp); strcat (sndBuf,); strcat (sndBuf, Accept: */*); strcat (sndBuf, Content-Type: application/x-www-form-urlencoded ); strcat (sndBuf, Accept-Encoding: gzip, deflate); strcat (sndBuf, User-Agent: Mozilla/4.0 (compatible; MSIE 7.0; Windows NT 6.1; WOW64; Trident/5.0; SLCC2 ;. net clr 2.0.50727 ;. net clr 3.5.30729 ;. net clr 3.0.30729; eSobiSubscriber 1.0.0.40; MAAR ;. NET4.0C ;. NET4.0E; Maxthon/3.0); strcat (sndBuf, Host: user.exam8.com); strcat (sndBuf, Content-Length: 61); strcat (sndBuf, Connection: Keep-Alive ); strcat (sndBuf, Cache-Contr Ol: no-cache); strcat (sndBuf, Cookie: bytes = 1415795254,1415797440; referrer = http % 3A // export CNZZDATA89268 = cnzz_eid % 3D1936228237-1 Listen 277587-http % 253A % 252F % 252Fuser.exam8.com % 252F % 26 ntime % 3D1415871209; aspsessionid1_tbsdt = Hangzhou); strcat (sndBuf,); strcat (sndBuf, action = login & LoginUserName = lzh_2 & LoginUserPassword = 123456789 &); puts (sndBuf); if (num = send (s, sndBuf, max, 0) <0) {perror (send error !); Exit (1);} puts (send success !); Sum = recv (s, rcvBuf, max-1, 0); // If rcvBuf's storage space is reduced, copyif (sum> 0) {puts (OK !); Printf (% s, rcvBuf);} puts (read success !); Closesocket (s); system (pause); WSACleanup (); return 0 ;}
      
     
    
   
  
 

Running result:

 

1. send information

 

2. Message returned after successful sending:

 

3. Information returned after Successful Logon:

 

4. Enter the wrong user name or password: