Fiddler5+ lightning simulator 4.0 settings for app packet capturing

This project just needs to analyze the packet capture of wechat applet , Without saying a word, pick up your mobile phone and click to connect , I found that it was normal to grab bags on the standby Apple , But the master's Android certificate failed to install , So Android 7 After version, the certificate installed by the user is no longer trusted , So I can't grab the bag .
Obsessive compulsive disorder caused by Android phones' inability to grab bags , Find two solutions online ：1. Or change to a lower version of Android 5 Go and grab the bag ;2. Or turn on your cell phone root jurisdiction , Then make the certificate into a system certificate . You can't play with your mobile phone like this , Thought of a compromise , Directly open the simulator on the computer to capture packets , Hence the fiddler+ Lightning idea .
Many online tutorials are still aimed at fiddler4+ Lightning Simulator 3 Grab the bag , But earlier versions are visiting app Embedded web page ( especially vue) Sometimes it will cause lightning 3 Unable to access load problem . So I decided to switch to the mainstream version ：fiddler5+ Lightning Simulator 4.0+
Preparation ： Download and install
1、Fiddler Download address ： Recommended download Classic Version can , Free is enough .
https://www.telerik.com/fiddler/fiddler-classic

2、 Lightning Simulator 4 Download address ： The latest version of Android , Download it directly
https://www.ldmnq.com/

3、git bash Download address ： If win No, bash Interface , You can download this client
https://git-scm.com/
Grab configuration
1、Fiddler open Tools--Options--HTTPS, Download the certificate to the desktop .

2、 Desktop open bash Execute the following command , take fiddler Exported Certificate , Convert to .pem file

  
 
 

   
  
  
openssl x509 -inform DER -in .\Fiddler.cer -out .\fiddler.pem
  
 
 

3、 Resolve the of the certificate hash value ( Because the Android certificate file name is based on hash It's worth saving )

  
 
 

   
  
  
openssl x509 -inform PEM -subject_hash_old -in .\fiddler.pem |head -1
   
  
  
269953fb
  
 
 

4、 Will be hash Value as the new file name with ".0" ending

  
 
 

   
  
  
cat .\fiddler.pem > .\269953fb.0
  
 
 

5、 The named 269953fb.0 file , Through lightning simulator 4( Need to open ROOT jurisdiction ) File sharing , Put the file in /system/etc/security/cacerts, But because of the simulator /system Belongs to the system file （ read-only ）, You cannot directly move or modify permissions , Then you can use adb command perform .
abd The tool has been placed at the end and can be downloaded by yourself . Note the version mismatch Will cause the connection to fail . My android version of lightning simulator is 7.1.2, Corresponding android API by 26.1.
stay adb Open in directory bash perform adb shell You can enter the command mode of lightning simulator .

  
 
 

   
  
  
λ adb shell
   
  
  
adb server version (31) doesn't match this client (39); killing...
   
  
  
* daemon started successfully *
   
  
  
aosp:/ # ls /storage/emulated/0/Pictures
   
  
  
269953fb.0 748061.jpg DATA WeiXin cache
   
  
  
aosp:/ #
  
 
 

You can see 269953fb.0 The file is already in the shared directory , There may be differences in the catalogue, so you can judge by yourself .
6、 Re mount , And perform the move , Then restart the simulator .

  
 
 

   
  
  
aosp:/ # su
   
  
  
aosp:/ # mount -o rw,remount /system
   
  
  
aosp:/ # mv /storage/emulated/0/Pictures/269953fb.0 /system/etc/security/cacerts/
   
  
  
aosp:/ # reboot
  
 
 

7、 Enter again after restart adb Pattern , Assign to the document 777 jurisdiction , Restart again .

  
 
 

   
  
  
aosp:/ # cd /system/etc/security/cacerts
   
  
  
aosp:/ # chmod 777 269953fb.0
   
  
  
aosp:/ # reboot
  
 
 

8、 Restart the lightning simulator 4 after , Set up -- Security -- Credentials of trust -- Found in the system fiddler certificate , The certificate is successfully installed .

9、 After the certificate is installed successfully , Also need to wifi Set it up . Because the simulator 4 There is no way to directly configure , We still use adb To set the global proxy .

  
 
 

   
  
  
D:\Program Files\adb
   
  
  
λ adb shell settings put global http_proxy 192.168.2.79:8888
  
 
 

10、 Restart the lightning simulator after setting 4, You can find that you can use fiddler Capture the simulator .

---- Iron man's knowledge base [email protected] 2022.07.19
At the end
Through the above steps, you can complete Fiddler5+ Lightning Simulator 4 Normal bag grabbing , Include https agreement .
Later, if Fiddler Use more and write another article about popular science , Finish the work .
adb Download link ：https://download.csdn.net/download/u011463397/86242855