modifying java script

[Joveice]

Hi, is there any ways to edit java script before the website uses it in chrome? I know about breakpoints and how to use them. but lets say you have checks for signup can you edit it before the website tryes to read it? (it's not in page scrips but in their own files)

[SCHISCHKA]

its pretty hard when its all obfuscated but i do it to get past paywalls. It is not impossible but i guess it depends how much time you have to find the function calls and replace them with your own

[Joveice]

4 minutes ago, SCHISCHKA said:

its pretty hard when its all obfuscated but i do it to get past paywalls. It is not impossible but i guess it depends how much time you have to find the function calls and replace them with your own

I have found what I'm looking at but when I change it, it still runs the old one (I also tryed to CTRL + S)

[SCHISCHKA]

34 minutes ago, Joveice said:

I have found what I'm looking at but when I change it, it still runs the old one (I also tryed to CTRL + S)

you can use httrack to download the website and all its files to study it. theres also web automation tools like selenium that will allow you to programatically browse web pages. Theres another tool but i cant remember its name

[SaladFingers]

2 hours ago, Joveice said:

I have found what I'm looking at but when I change it, it still runs the old one (I also tryed to CTRL + S)

Don't browsers like Chrome allow you to reload the page with changes you made on the fly?

 

Things you can try: Remove the src linking to the JS, and manually add the code from the linked file right within the source itself, after making your edits. Or simply remove the script altogether, or add a custom address linking to one of your own files.

 

Alternatively, you can use add-ons like this one: https://addons.mozilla.org/en-US/firefox/addon/tamper-data/

[Joveice]

5 hours ago, SaladFingers said:

Don't browsers like Chrome allow you to reload the page with changes you made on the fly?

 

Things you can try: Remove the src linking to the JS, and manually add the code from the linked file right within the source itself, after making your edits. Or simply remove the script altogether, or add a custom address linking to one of your own files.

 

Alternatively, you can use add-ons like this one: https://addons.mozilla.org/en-US/firefox/addon/tamper-data/

I'm using chrome, and Yea thats what they say all over the internet but it hasent worked for me yet, bnut I'm not sure if I do it right.

 

I tryed to add something like that to chrome but it dident let me edit the post data even tho it was post data editor?? :PP

[SaladFingers]

12 hours ago, Joveice said:

I'm using chrome, and Yea thats what they say all over the internet but it hasent worked for me yet, bnut I'm not sure if I do it right.

 

I tryed to add something like that to chrome but it dident let me edit the post data even tho it was post data editor?? :PP

 

I'm not sure what's going on... Try removing the src call and paste the javascript code directly into the same page, then play with it however you want. 

[Joveice]

28 minutes ago, SaladFingers said:

 

I'm not sure what's going on... Try removing the src call and paste the javascript code directly into the same page, then play with it however you want. 

Sounds like a good tip, I'll try!

[Joveice]

23 minutes ago, Joveice said:

Sounds like a good tip, I'll try!

It still loads the file even tho I removed the script and added a custom.

[Joveice]

Okey, so I'm using telrik fiddler to change the post data before it's sendt. Issue is in chrome networking I can view the whole post but in fiddler I don't see any of it.

 

Whats this?