15 replies to this topic

[Cloud]

Intro:

Why are you making this Cloud?

Because ilovesona requested it.

 

Can we use this regardless of Inspired or Feretorix permission?

You can, but your thread will be deleted in seconds.

 

What will this cover?

LuaC encryption + Base64

Base64

 

Tutorial:

Im assuming you know how to operate Notepad++ in this whole tutorial

1. LuaC + Base64

• Open a command prompt and make sure you have Lua installed
• cd (goto) the directory in which you keep your source.lua (what you want to encrypt)
• Type in

  luac source.lua

• This will generate a luac.out file in the directory which your Source.lua is
• rename luac.out to Complied.lua or something
• Then open the lua file with Notepad++
• Goto Plugins > MIME Tools > Base64Encode (make sure you Cntrl A everthing in the Compiled.lua)
• Now copy the the base64 code into this
• Spoiler

  require('math')
  
  local index_table = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/'
  
  
  function to_binary(integer)
      local remaining = tonumber(integer)
      local bin_bits = ''
  
      for i = 7, 0, -1 do
          local current_power = math.pow(2, i)
  
          if remaining >= current_power then
              bin_bits = bin_bits .. '1'
              remaining = remaining - current_power
          else
              bin_bits = bin_bits .. '0'
          end
      end
  
      return bin_bits
  end
  
  function from_binary(bin_bits)
      return tonumber(bin_bits, 2)
  end
  
  function CloudDecode(to_decode)
      local padded = to_decode:gsub("%s", "")
      local unpadded = padded:gsub("=", "")
      local bit_pattern = ''
      local decoded = ''
  
      for i = 1, string.len(unpadded) do
          local char = string.sub(to_decode, i, i)
          local offset, _ = string.find(index_table, char)
          if offset == nil then
               error("Invalid character '" .. char .. "' found.")
          end
  
          bit_pattern = bit_pattern .. string.sub(to_binary(offset-1), 3)
      end
  
      for i = 1, string.len(bit_pattern), 8 do
          local byte = string.sub(bit_pattern, i, i+7)
          decoded = decoded .. string.char(from_binary(byte))
      end
  
      local padding_length = padded:len()-unpadded:len()
  
      if (padding_length == 1 or padding_length == 2) then
          decoded = decoded:sub(1,-2)
      end
      return decoded
  end
  assert(loadstring(CloudDecode("INSERT THE BASE64 STUFF HERE"), nil, "bt", _ENV))()

• Where it says "INSERT THE BASE64 STUFF HERE" put your Base64Encoded stuff.

2. Base64

• Do all the steps above except anything related to the LuaC

[ilovesona]

so CloudDecode is just a base64 decoder right?

 

and there is no "encryption" in this example, since luac is compile no encrypt

 

correct me if i'm wrong

 

 

anyways, thx for this tutorial, hope we have part2 

[Inferno]

1) You can localize functions 'from binary' and 'to binary'
2) You can create new function 'LoadEncryptedScript', winch looks like:

function LoadEncryptedScript(Code)
  assert(loadstring(CloudDecode("Code"), nil, "bt", _ENV))()
end

It also will allow to localize CloudDecode.
3) You can localize tonumber, or write this function manually (to reduce number of requires).
4) This is a more library

Anyway, thanks

[TaydeR]

May I ask a question Cloud SenpaÏ ?
If Feretorix or Inspired wil be against or even delete these threads why not sending it by MP ?
I mean, if people can't use it why not just providing the steps by MP ?


TaydeR

[Cloud]

so CloudDecode is just a base64 decoder right?

 

and there is no "encryption" in this example, since luac is compile no encrypt

 

correct me if i'm wrong

 

 

anyways, thx for this tutorial, hope we have part2 

Yes base64decode (just renamed)

 

1) You can localize functions 'from binary' and 'to binary'
2) You can create new function 'LoadEncryptedScript', winch looks like:

function LoadEncryptedScript(Code)
  assert(loadstring(CloudDecode("Code"), nil, "bt", _ENV))()
end

It also will allow to localize CloudDecode.
3) You can localize tonumber, or write this function manually (to reduce number of requires).
4) This is a more library

Anyway, thanks

 

Thanks for the optimization. I'll test this out and release it.

 

May I ask a question Cloud SenpaÏ ?
If Feretorix or Inspired wil be against or even delete these threads why not sending it by MP ?
I mean, if people can't use it why not just providing the steps by MP ?


TaydeR

Well if you ask permission and they agree then you may use this encryption, but that said I would rather keep everything open source.

[Feretorix]

I am pretty much against script encryption right now. Since from the start it can be decrypted and breaks the purpose from encrypting in the first place.

If somebody reports that a script is stolen (credits not given) and it can be proven, then a moderator can simply delete the script (thread) itself.

I want things to stay open source, i am pretty sure we learn from each other, but giving credits is a must.

[Kiara789]

xD

[Rakli]

Cool, tried and it's working how can i reverse it back to normal?

[Tiritto]

What's the actual point in encrypting LUA files?

How does it impact on the script performance?

[Rakli]

What's the actual point in encrypting LUA files?

How does it impact on the script performance?

I think it's not changing performance, just hiding the code..

[Tiritto]

I think it's not changing performance, just hiding the code..

Yet you have to decrypt the code before sending it to GoS application.

So you have to execute extra operation on script load and your decrypted code is still available on the client-side.

[Cloud]

I am pretty much against script encryption right now. Since from the start it can be decrypted and breaks the purpose from encrypting in the first place.

If somebody reports that a script is stolen (credits not given) and it can be proven, then a moderator can simply delete the script (thread) itself.

I want things to stay open source, i am pretty sure we learn from each other, but giving credits is a must.

Same thing i believe! But if for some reason permission is given then this is the guide people may turn to. I created this just for the fun of it and never intended to have any script encrypted.

[Tiritto]

Same thing i believe! But if for some reason permission is given then this is the guide people may turn to. I created this just for the fun of it and never intended to have any script encrypted.

Imagine the chaos when Inspired will encrypt his library.

[ilovesona]

Cool, tried and it's working how can i reverse it back to normal?

dump the decoded string and use unlua to decompile back to source code

[testerhdre]

@ilovesona

 

dump the decoded string and use unlua to decompile back to source code

 

 can you explain more ?

i didnt understand 

[Krystra]

@ilovesona

 can you explain more ?

i didnt understand 

First of all @ilovesona is mia like months, secondly you are not allowed to release an encrypted script anyways so do not spend your time to these kind of things atm