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WPeChatGPT

• IDA plugin based on the same model as ChatGPT, using the gpt-3.5-turbo model released by OpenAI, can help analysts quickly analyze binary files.

• Features currently supported by WPeChatGPT include:

  • Analyze the usage environment, intended purpose, and function of the function.
  • Rename variables of functions.
  • Attempt to restore the function with python3, this function is mainly for functions of smaller blocks (such as an XOR decryption function).
  • Look for vulnerabilities in the current function.
  • Try to use python to generate the corresponding EXP for the vulnerable function.
  • Utilize GPT Automatically analyze binary files, see section Auto-WPeGPT for details.

• The WPeChatGPT plugin uses OpenAI's text-davinci-003 model trained on GPT. After v2.0 use OpenAI's latest gpt-3.5-turbo model (The same as ChatGPT).

ChatGPT's analysis results for reference only, otherwise we analysts would be out of work on the spot. XD

Update History

Version	Date	Comment
1.0	2023-02-28	Based on Gepetto.
1.1	2023-03-02	1. Delete the function of analyzing encryption and decryption. 2. Increase the function of python restore function. 3. Modified some details.
1.2	2023-03-03	1. Added the function of finding binary vulnerabilities in functions. 2. Increase the function of trying to automatically generate the corresponding EXP. 3. Modified some details. (The upload was not tested due to the OpenAI server lag)
2.0	2023-03-06	1. Complete the testing of v1.2 version vulnerability related functions. 2. Switch to the latest gpt-3.5-turbo model released by OpenAI.
2.1	2023-03-07	Fix the timed out issue of OpenAI-API. (See section About OpenAI-API Error Reporting)
2.3	2023-04-23	Add the Auto-WPeGPT v0.1 to support automatic analysis of binary files. (Package anytree needs to be added from this version, use requirements.txt or pip install anytree)
2.4	2023-11-10	1. Changed some display details. 2. Update Auto-WPeGPT v0.2.

Install

1. Run the following command to install the required packages.

pip install -r ./requirements.txt

2. Modify the script WPeChatGPT.py, add your API key to the variable openai.api_key, change the variable ZH_CN to False. (Default Chinese)
3. Copy the script file WPeChatGPT.py and the folder Auto-WPeGPT_WPeace to the plugins folder of IDA, and finally restart IDA to use it.

! NOTE: You need to set the IDA environment to python3, and you need to use the latest OpenAI Python package after WPeChatGPT 2.0 version.

Usage

Supports using any of the right click, menu bar or shortcut keys in IDA.

• hot key:
  Function analysis = "Ctrl-Alt-G"
Rename function variables = "Ctrl-Alt-R"
Vulnerability finding = "Ctrl-Alt-E"

• Right click on the pseudocode window:

  

• Menu bar: Edit $\Rightarrow$ WPeChatGPT

  

Example

How to use:

  

Function analysis effect display:

  

Vulnerability finding effect display:

  

Auto-WPeGPT

Update History:

Version	Date	Comment
0.1	2023-04-23	Initial release.
0.2	2023-11-10	1. Improve the recognition of valid strings. 2. Improve the analysis of function call trees. 3. Add recognition for import functions.

How to use: Find Auto-WPeGPT in the menu bar and click it. After the output is complete, you can find the analysis results in the corresponding folder ("WPe_+IDB name").

• Menu bar: Edit $\Rightarrow$ WPeChatGPT $\Rightarrow$ Auto-WPeGPT

  

The meaning of each file in the output folder:

GPT-Result.txt -> Auto-WPeGPT analysis results
funcTree.txt -> function call tree structure
mainFuncTree.txt -> main function tree structure
effectiveStrings.txt -> Suspicious strings in the binary

Show results:

  

After testing, the v0.1 version has a better analysis effect on files with fewer functions. In case of binary files with a large number of functions, tokens will exceed the range. We will try to improve it in the next version.

About OpenAI-API error reporting

  From March 2, 2023, I often encounter API errors, and I thought it was a problem of server instability (because I have ups and downs here), but because there are too many feedbacks that I have encountered related errors, so I I first went to OpenAI to check the API Status and found that it was running well, so I found that it might not be the server problem I thought, so I searched and debugged related problems. The following is how I dealt with the OpenAI API connection problem:

  First of all, the plug-in has been running under the conditions of Scientific Online.

• Under the condition of scientific Internet access, if you find that the plug-in fails to connect to the API after many attempts, you need to check the urllib3 version of python (version 1.26 has a proxy problem).
  • You can use the following commands to perform a fallback fix for urllib3:

  pip uninstall urllib3
  pip install urllib3==1.25.11
  

• If the urllib3 version is correct or there are still API access problems after reinstalling the 1.25 version, please download the latest version and specify a proxy for the plugin:
  • Uncomment the following three lines of code, then fill in the proxy address and port information into the proxies variable:

  #print("WPeChatGPT has appointed the proxy.")
  #proxies = {'http': "http://127.0.0.1:7890", 'https': "http://127.0.0.1:7890"}
  #openai.proxy = proxies
  

Contact me

If you encounter problems or have any questions when using the plugin, please leave a message or send me an email.

Acknowledgment

The project is based on Gepetto and inspired by it, you can visit https://github.com/JusticeRage/Gepetto to learn about the original method.