How would i detect a word with a string pattern

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#1

well if the title didnt make sense, i want to make a script that detects the script source for a word WITH a string pattern like “require(%d+$)”

nothing really helped me

and if this was asked before, dont blame me i found nothing from the search bar.

anyway, not only that it would help me, it might help antiviruses on reducing false positives, too

#2

what string are you working with and what do you want it to turn into?

post confused me a bit

#3

Can you elaborate on what do you mean? I don’t understand this post.
Script source is only accessible to plugin scripts.

#4

i think you didnt understand it, im working on an antivirus and im trying to reduce false positives by detecting a word with a string pattern

#5

yeah im working on an plugin antivirus

#6

im trying to detect a word with a string pattern at the same time

#7

Elaborate on the “word with a string pattern” part and what did you mean by “require(%d+$)”? %d is a pattern for integers, not words.

#8

ok, like for example theres a virus with a require

require(virusmodule)

and i want to detect if it has require with numbers

because require(mainmodule) is not malicious

#9

local id = source:match("require%((%d+)%)")

This pattern should work (if that’s what you mean). It also returns the required module ID.

#11

Thanks, I will try it

I appreciate it

#12

You didn’t escape the ( and ) characters properly, that’s why it doesn’t work.
This is the string pattern you are looking for that also accounts for whitespaces, variables and IDs:
require%s*%(%s*([%w_.]+)%s*%)%s*

#13

Thanks too, I will try both 300000 cha rss

#14

okay I will try that too 30 ch ars

#15

It worked, tysm now I can finally decrease false positives

1 Like
#16

yeah it works but not with string patterns, thanks anyway

#17

Always printed “malicious”, thanks anyway