 |
Cheat Engine
The Official Site of Cheat Engine
|
| View previous topic :: View next topic |
| Author |
Message |
Corroder
Grandmaster Cheater Supreme
 Reputation: 75
Joined: 10 Apr 2015
Posts: 1668
|
 Posted: Wed Nov 25, 2015 10:20 pm Post subject: Handle lomg string in lua |
 |
|
Hi there,
i try to handle long string with lua :
| Code: |
text = [[
f = createForm(false)
control_setSize(f, 170, 180)
control_setCaption(f,"Test")
f.show()
b = createButton(f)
control_setPosition(b, 45, 65)
control_setCaption(b, "Go..!!")
function test()
showMessage("Button has clicked")
end
control_onClick(b, test)
]]
|
code above will identifying as a string without problem / error.
Now, how i can handle long string syntax in lua if the text also contains "[" , "[[", "]" or "]]" ?
other example :
| Code: |
text = [[ function setHack()
t =
{
{'Hack 1',
[[LuaCall(Aobswap("a3 ad 68 95 9a 01 47 47","a3 ad 68 a0 9a 01 47 47"))]],
[[Hack 1]]},
{'Hack 2',
[[LuaCall(Aobswap("27 26 2b 63 04 63 05 5d 90 7f d1 d2 d3 46 90 7f 03 48 47","27 26 2b 63 04 63 05 5d 90 7f d1 d2 d3 2f e9 01 2a 48 47"))]],
[[Hack 2]]},
[[]]}
}
end
]]
|
it give error "Script Error:[string "text = [[..."]:6: nesting of [[...]] is deprecated near '['" because of bracket used.
Is there any other way to handling long string syntax in lua ?. I have tried to googling it but no match found.
Thank in advance
regard's
|
|
| Back to top |
|
 |
panraven
Grandmaster Cheater
![]() Reputation: 62
Joined: 01 Oct 2008
Posts: 958
|
| Posted: Wed Nov 25, 2015 10:25 pm Post subject: |
|
|
Try use
[=[
]=]
,
[==[
]==]
etc.
_________________
- Retarded. |
|
| Back to top |
|
|
Corroder
Grandmaster Cheater Supreme
Reputation: 75
Joined: 10 Apr 2015
Posts: 1668
|
| Posted: Thu Nov 26, 2015 2:33 am Post subject: |
|
|
Thank you so much Panraven, for helping
All work properly now with [=[ text ]=] for handling long string.
Actually I am use it to try load encoded script has store in CE stream and use decoding script first and then use loadstring to execute the script.
Example (text without [=[..... ]=]) (i have other tested with text contain [[ and ]], and it work properly too.
| Code: |
contain of file "dec_code.lua"
function mycode()
local b='ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/'
-- decoding
function dec(data)
data = string.gsub(data, '[^'..b..'=]', '')
return (data:gsub('.', function(x)
if (x == '=') then return '' end
local r,f='',(b:find(x)-1)
for i=6,1,-1 do r=r..(f%2^i-f%2^(i-1)>0 and '1' or '0') end
return r;
end):gsub('%d%d%d?%d?%d?%d?%d?%d?', function(x)
if (#x ~= 8) then return '' end
local c=0
for i=1,8 do c=c+(x:sub(i,i)=='1' and 2^(8-i) or 0) end
return string.char(c)
end))
end
enctext = "ZiA9IGNyZWF0ZUZvcm0oZmFsc2UpCmNvbnRyb2xfc2V0U2l6ZShmLCAxNzAsIDE4MCkKY29udHJvbF9zZXRDYXB0aW9uKGYsIlRlc3QiKQpmLnNob3coKQoKYiA9IGNyZWF0ZUJ1dHRvbihmKQpjb250cm9sX3NldFBvc2l0aW9uKGIsIDQ1LCA2NSkKY29udHJvbF9zZXRDYXB0aW9uKGIsICJHby4uISEiKQoKZnVuY3Rpb24gdGVzdCgpCnNob3dNZXNzYWdlKCJCdXR0b24gaGFzIGNsaWNrZWQiKQplbmQKCmNvbnRyb2xfb25DbGljayhiLCB0ZXN0KQo="
dectext = dec(enctext) -- decoding / get text back
end
--
-- next in CE Table will put this script
--
------ Avoid Lua Engine Pop-up
getLuaEngine().cbShowOnPrint.Checked=false
getLuaEngine().hide()
----- Call Code
function loadTableCode(n2)
local t2 = findTableFile(n2)
if t2 ~= nil then
local s2 = t2.Stream
local c2 = readStringLocal(s2.Memory,s2.Size)
return c2 ~= nil and loadstring(c2) -- return a function
end
end
--
local f2 = loadTableCode('dec_code.lua')
print(type(f2))
if type(f2) == 'function' then f2() else print('not loaded') end
---- Run the function
mycode()
a = tostring(dectext)
-- Defining a string to use as function later
-- funcStr = "print('test')"
funcStr = a
-- loadstring(funcStr)()
func = loadstring(funcStr)
func()
|
Point of this trying is to executing encoded script (to make it harder for leecher to get code). I am use Base64 encode and i think it also will work with base85, SHA1, or self encode decode function.
Regard's
|
|
| Back to top |
|
|
ParkourPenguin
I post too much
 Reputation: 152
Joined: 06 Jul 2014
Posts: 4706
|
| Posted: Thu Nov 26, 2015 10:04 am Post subject: |
|
|
| Corroder wrote: | | Point of this trying is to executing encoded script (to make it harder for leecher to get code). I am use Base64 encode and i think it also will work with base85, SHA1, or self encode decode function. |
Please, please don't use base64 if you're trying to encrypt stuff. It's very easy to decode; there are tons of web applets online that will do it for you. Seriously. Just paste that encoded string into this and it'll show you everything.
Base64 isn't going to stop anyone who is interested enough to try to get your code. If you want to actually stop people, make your own encryption. But even then, if you have all the code to decode that string right in front of people, they're going to use that to decode the string and get your code.
If you actually want to protect your code, write it in another language (e.g. C++). See this topic for more information about protecting your code.
_________________
I don't know where I'm going, but I'll figure it out when I get there. |
|
| Back to top |
|
|
Corroder
Grandmaster Cheater Supreme
Reputation: 75
Joined: 10 Apr 2015
Posts: 1668
|
| Posted: Thu Nov 26, 2015 7:54 pm Post subject: |
|
|
ParkourPenguin thank you to tell
Of course base64 is easy to break and take code back. In my topic, actually it's about load decoded script from stream with a function loadstring. I just to test the method is possible to do.
Reverse engineering is a knowledge to get back code or script (strings) from compiled file / program. I think all compiled programs / applications able to decompile with reverse engineering knowledge. Anyhow, we just make it harder to break off the codes.
Also there are many other method for encoding, obfuscating, compiling, etc that i can use to encoding codes / scripts or use some tool like themida to protect exe file, etc...
example : a simple own decoding function adapted form VB to Lua.
| Code: |
function enc_textcode(s)
local coded = ""
for i=1,#s do
coded = coded .. string.char(s:byte(i) + 3)
end
return coded
end
--- test
a = enc_textcode("Virus Installed")
print(a)
Yluxv#Lqvwdoohg
|
or another method by Zanzer
| Code: |
n={7946918697735711062,2406159617271886963}
t=''
for i=1,2 do
q=qwordToByteTable(n[i])
for j=1,8 do
t=t..string.char(q[j])
end
end
print(t)
==
Virus Installed!
|
other with RSA :
| Code: |
function rsa_getkey()
rsa_e = 0
local primes = {2, 3, 5, 7, 11, 13, 17, 19, 23, 29, 31, 37, 41, 43, 47, 53, 59, 61, 57, 71, 73, 79, 83, 89, 97}
math.randomseed = os.time()
rsa_p = primes[math.random(5,#primes)]
rsa_q = rsa_p
while rsa_q == rsa_p do
math.randomseed = os.time()
rsa_q = primes[math.random(5,#primes)]
end
rsa_n = rsa_p*rsa_q
rsa_phi = (rsa_p-1)*(rsa_q-1)
while rsa_e == 0 do
local prime = primes[math.random(1,10)]
if rsa_phi%prime > 0 then
rsa_e = prime
end
end
for i = 2, rsa_phi/2 do
if ((i*rsa_phi)+1)%rsa_e == 0 then
rsa_d = ((i*rsa_phi)+1)/rsa_e
break
end
end
return "p: ",rsa_p,"\nq: ",rsa_q,"\nn: ",rsa_n,"\ne: ",rsa_e,"\nd: ",rsa_d,"\nphi: ",rsa_phi,"\n"
end
|
and many more eq. Ascii85, SHA 256, Base32,etc
regard's
|
|
| Back to top |
|
|
|
|
You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot vote in polls in this forum
You cannot attach files in this forum
You can download files in this forum
|
|
FAQ
Search
Memberlist
Usergroups
Register
Profile
Log in to check your private messages
Log in
