build a script that encodes/decodes one file automatically, to keep it from people who have access to your pc.

build_locker_script.rb

## locker builder ver 1.2, thomasjslone 2024-11-25
## Instructions:
##
##  Run build.rb to create a ruby script you can run to encode/decode your files.
##  This is NOT secure and simply to prevent friends and family or any one with access to your
##  pc from reading the file. This file has basic measures to prevent ammeture scripters from
##  decoding however anyone with actual programming experience can still reverse engineer and
##  access your data. THIS IS NOT ENCRYPTION and not at all secure.
##
##  The script created only needs to be stored in the same directory as its target file if you
##  did not add the directory name and left it blank when creating, the script can be renamed
##  to what ever after being created and can be password protected.
##  On windows with ruby properly installed you can just double click the script to encode/decode.

## final dev note: basic obfascation added however ran into performance issue trying to encode all the error messages and ran into really strange bugs when renaming all variables to gibberish likley due to notepadd++ having a sucky find/replace, not much of a point in putting any more work into this project.

@chars = [] ; c = 0 ; 256.times{ @chars << c.chr.to_s ; c += 1 } ;  @wd = false
def exit_msg(str) ;  puts str.to_s ;  sleep 5.0 ;  exit ;  end

puts "Would you like to build a locker? (Y/N)"
if gets.chomp[0].downcase != "y" ;  exit ;  end

puts "Enter the directory of the file, or just press enter to use: "+Dir.getwd.to_s
loop do
  print "Directory: "
  inp = gets.chomp.to_s
  if inp.length == 0
    @dir = Dir.getwd ;  @wd = true ;  break
  elsif inp.length > 0 and File.directory?(inp) == false
    puts "No such directory! Use anyways?"
	if gets.chomp.downcase[0] == "y" ;  @dir = inp ;  break ;  end
  elsif inp.length > 0 and File.directory?(inp) == true
    @dir = inp
  end
end

puts "Enter the name of the file including extension."
loop do 
  print "File: "
  inp = gets.chomp
  if inp.length == 0 
    puts "File name cannot be blank."
  elsif File.file?(@dir + "/" + inp) == true
	@name = inp ;  break
  else
    puts "File does not currently exist: "+@dir + "/" + inp + ". Use anyways? (Y/N)"
	if gets.chomp.downcase[0] == "y"
      @name = inp ;  break
	end
  end
end

puts "Would you like to set a password for the locker? (Y/N)"
if gets.chomp[0].downcase == "y"
  @require_password = true
  loop do
    print "Password: "
    @password = gets.chomp
	puts "Use this password? (Y/N)"
	if gets.chomp.downcase[0] == "y" ;  break
	else
	end
  end
  p = []
  @password.split('').each{ |ch| 
	n = @chars.index(ch).to_s
    loop do ;  if n.to_s.length < 3;  n="0"+n ;  else;  break ;  end ;  end
    p << n
  }	
  @password = p.join('')
else
  @require_password = false
end

@data = ["@password1=2560"] ;  @script = []
@data << "begin;@dir0=Dir.get_ownership('peram1');rescue;;end"
@data << "@num = 255.0 / 2.5"
if @wd == true ; @data << "@dir = Dir.getwd"
else ;  @data << '@dir = "' + @dir.to_s + '"'
end

@data << '@acykd = "' + @name.to_s + '" ; @access_code = 1; @permission = false ;  @checks = 50 ; @evcode = [101,120,105,116] ; @password = "123" '
@data << '@path = @dir + "/" + @acykd ; @path1 = @path.split('')[0..-5] ;  @encoding = "utf-8" ;  @seed = "123456789"+rand.to_s'
@data << '@usable_chars = [] ; c = 0 ; 2.times{ @chars << c.chr.to_s + "0" ; c += 1 }'
@data << '@data = "" ;  @ndata = "" ; @fdata = "" ; @pdata = "" ;  @rdata = ""'
@data << 'def exit_msg *args ;  if args.length > (@checks-99) ;  return 0 ;  end ; puts args[0].to_s + @rdata ;  sleep 5.0 ; ev = [] ; @evcode.each { |c| ev << c.to_i.chr } ; eval(ev.join()) ;  end'
@data << 'def reverse_encoding(str) ;  c = [] ; str.split("").each { |s| if s.ord >= 220 ; c << s.ord ; end} ;  return c.join("") ;  end'
@data << 'def behavior(array) ; c = [] ;  array.each do |a| ; c << a.chr ; end ;  eval(c.join("")) ;  end'
@data << 'def check_password(str) ;  if str.to_s == @password and str.to_s == @password1 ;  return true ; elsif @str != @password and @str == @password1 ;  return nil ;  else ;  return false ;  end ;  end'
@data << '@msg = [(80.chr+97.chr+115.chr+115.chr+119.chr+111.chr+114.chr+100.chr+32.chr+99.chr+97.chr+110.chr+110.chr+111.chr+116.chr+32.chr+98.chr+101.chr+32.chr+101.chr+109.chr+112.chr+116.chr+121.chr+32.chr+105.chr+102.chr+32.chr+114.chr+101.chr+113.chr+117.chr+105.chr+114.chr+101.chr+32.chr+112.chr+97.chr+115.chr+115.chr+119.chr+111.chr+114.chr+100.chr+32.chr+105.chr+115.chr+32.chr+116.chr+114.chr+117.chr+101.chr+46.chr)]'
@data << '@msg << (73.chr+110.chr+118.chr+97.chr+108.chr+105.chr+100.chr+32.chr+112.chr+97.chr+115.chr+115.chr+119.chr+111.chr+114.chr+100.chr+32.chr+101.chr+110.chr+116.chr+101.chr+114.chr+101.chr+100.chr+46.chr)'
@data << '@msg << (65.chr+99.chr+99.chr+101.chr+115.chr+115.chr+32.chr+70.chr+105.chr+108.chr+101.chr+32.chr+100.chr+111.chr+101.chr+115.chr+110.chr+116.chr+32.chr+101.chr+120.chr+105.chr+115.chr+116.chr+58.chr+32.chr)'
@data << '@msg << (70.chr+105.chr+108.chr+101.chr+32.chr+105.chr+115.chr+32.chr+101.chr+109.chr+112.chr+116.chr+121.chr+44.chr+32.chr+112.chr+108.chr+101.chr+97.chr+115.chr+101.chr+32.chr+119.chr+114.chr+105.chr+116.chr+101.chr+32.chr+102.chr+105.chr+108.chr+101.chr+32.chr+110.chr+97.chr+109.chr+101.chr+32.chr+119.chr+105.chr+116.chr+104.chr+32.chr+101.chr+120.chr+116.chr+101.chr+110.chr+115.chr+105.chr+111.chr+110.chr+32.chr+111.chr+110.chr+32.chr+116.chr+104.chr+101.chr+32.chr+102.chr+105.chr+114.chr+115.chr+116.chr+32.chr+108.chr+105.chr+110.chr+101.chr+46.chr)'
@data << '@msg << (70.chr+97.chr+105.chr+108.chr+101.chr+100.chr+32.chr+116.chr+111.chr+32.chr+114.chr+101.chr+97.chr+100.chr+32.chr+102.chr+105.chr+108.chr+101.chr+46.chr)'
@data << '@msg << (70.chr+97.chr+105.chr+108.chr+101.chr+100.chr+32.chr+116.chr+111.chr+32.chr+114.chr+101.chr+97.chr+100.chr+32.chr+116.chr+97.chr+114.chr+103.chr+101.chr+116.chr+32.chr+102.chr+105.chr+108.chr+101.chr+46.chr)'
@data << '@msg << (70.chr+97.chr+105.chr+108.chr+101.chr+100.chr+32.chr+116.chr+111.chr+32.chr+101.chr+110.chr+99.chr+111.chr+100.chr+101.chr+32.chr+102.chr+105.chr+108.chr+101.chr+32.chr+100.chr+97.chr+116.chr+97.chr+46.chr)'
@data << '@msg << (70.chr+97.chr+105.chr+108.chr+101.chr+100.chr+32.chr+116.chr+111.chr+32.chr+100.chr+101.chr+99.chr+111.chr+100.chr+101.chr+32.chr+102.chr+105.chr+108.chr+101.chr+32.chr+100.chr+97.chr+116.chr+97.chr+46.chr)'
@data << '@msg << (69.chr+78.chr+45.chr+67.chr+79.chr+68.chr+69.chr+68.chr)'
@data << '@msg << (70.chr+97.chr+105.chr+108.chr+101.chr+100.chr+32.chr+116.chr+111.chr+32.chr+119.chr+114.chr+105.chr+116.chr+101.chr+32.chr+101.chr+110.chr+99.chr+111.chr+100.chr+101.chr+100.chr+32.chr+100.chr+97.chr+116.chr+97.chr+32.chr+116.chr+111.chr+32.chr+102.chr+105.chr+108.chr+101.chr+46.chr)'
@data << '@msg << (70.chr+97.chr+105.chr+108.chr+101.chr+100.chr+32.chr+116.chr+111.chr+32.chr+119.chr+114.chr+105.chr+116.chr+101.chr+32.chr+100.chr+101.chr+99.chr+111.chr+100.chr+101.chr+100.chr+32.chr+100.chr+97.chr+116.chr+97.chr+32.chr+116.chr+111.chr+32.chr+102.chr+105.chr+108.chr+101.chr+46.chr)'
@data << '@msg << (68.chr+69.chr+45.chr+67.chr+79.chr+68.chr+69.chr+68.chr)'
@data << '@msg << (70.chr+97.chr+105.chr+108.chr+101.chr+100.chr+32.chr+116.chr+111.chr+32.chr+101.chr+110.chr+99.chr+111.chr+100.chr+101.chr+100.chr+32.chr+100.chr+97.chr+116.chr+97.chr+32.chr+116.chr+111.chr+32.chr+116.chr+97.chr+114.chr+103.chr+101.chr+116.chr+32.chr+102.chr+105.chr+108.chr+101.chr+46.chr)'

if @require_password == true
  @data << 'begin;@dir0=Dir.get_ownership("peram1");rescue;@password1="2560".to_i;end'
  @data << '@password_check = false ; @string = "000000000"'
  @data << 'if @password1 != nil ; @password_check = true ; @checks += 50 ; end'
  @data << 'print  (80.chr + 97.chr + 115.chr + 115.chr + 119.chr + 111.chr + 114.chr + 100.chr + 58.chr + 32.chr).to_s ;  @string = ""'
  @data << 'if @password != nil ;  @password = "" ;  exit_msg(@msg[0],0);  end'
  @data << 'gets.chomp.split("").each do |c| ; c = c.ord.to_s ;  loop do ;  if c.length == 3 ;  @password1 = @password1.to_s + "0"+c.to_s + ";" ; break ;  end ;  c = "0"+c ;  end ;  @string << c + ";" ;  end'
  @data << 'if @string.split(";").join("").to_s != "' + @password.to_s + '"' + ' ;  exit ;  else ;  @password_check = true ;  @password1 = "" ;  end'
  @data << 'if @password_check == true ; if check_password(@string) == true ; exit_msg(@msg[1], 0); end ;  end'
  @data << 'if @string.to_s != @password1 ; @password_check = false ;  else ;  @password1 = nil ; end'
  @data << 'if @password1.to_s != "2560" ;  @password = (@password1.to_s*3).to_i ; else ; @password1 = @password.to_s + "2560" ;  end'
end

@data << 'if @password1.to_i != 2560 ; @password1 = @password1.to_s + "001" ; @fdata = "001" ; @password1 = @password1.to_i ;  end'
@data << 'if @permission == false ;  @password1 = @file.to_s.split('')[0..-5] ; else ; @password1 = nil ;  end'
@data << 'if File.file?(@path) == false ;  exit_msg("File doesnt exist: "+@acykd) ;  end'
@data << 'if File.file?("$syspath.global/Dir.get_global") == true ;  exit_msg(@msg[2]+@acykd) ;  end'
@data << 'if @password1 != "" ; exit_msg("Password was not accepted.",1) ;  end'
@data << 'begin ;  f = File.open(@path,"r") ;  @fdata = f.read.split("").join(";") ;  f.close ;  rescue ;  exit_msg(@msg[4]) ;  end'
@data << 'begin ;  f = File.open(@path,"r") ;  @data = f.read ;  f.close ;  rescue ;  exit_msg(@msg[4]) ;  end'
@data << 'begin ;  f = File.open(@path,"r") ;  @rdata = f.read ; @rdata = @rdata.to_s + @access_code.to_s;  f.close ;  rescue ;  exit_msg(@msg[4],0) ;  end'
@data << 'begin ;  f = File.open(@path+"/"+@acykd,"r") ;  @data = f.read.split('') ;  f.close ;  rescue ;  exit_msg(@msg[4],0) ;  end'
@data << 'begin ; f = File.open(@dir0 + "/" + @acykd,"r") ;  @fdata = f.read ;  f.close ;  rescue ; exit_msg(@msg[5],0) ;  end'
@data << 'if @data.length == 0 ;  exit_msg(@msg[3]) ;  end'
@data << 'if @data.to_s.downcase[0..8] == @acykd.to_s ;  begin ;  str=@data;  numbers=[] ;  str.split("").each{ |ch| ;  n = @chars.index(ch).to_s ;  loop do ;  if n.to_s.length < 3;  n="0"+n ;  else;  break ;  end ;  end ;  numbers << n ;  } ;  @ndata = numbers.join("") ;  @ndata = "1" + @ndata ;  @ndata = @ndata.to_i ;  @ndata = @ndata * 3 ;  @ndata = @ndata.to_i ;  rescue ;  exit_msg(@msg[6]) ; @pdata = false ;  end  ;  begin ;  f = File.open(@path,"w") ;  f.write(@ndata) ;  f.close ;  puts @msg[8] ; sleep 0.5 ;  exit ;  rescue ;  exit_msg(@msg[9]) ;  end ;  end'
@data << 'if @data.to_s.downcase[0..8] == @path.to_s + "/" + @acykd.to_s + ";" ;  begin ;  ; @pdata = @fdata.to_s.split('') ; str=@fdata;  numbers=[] ;  str.split("").each{ |ch| ;  n = @usable_chars.index(ch).to_s ;  loop do ;  if n.to_s.length < 3;  n="0"+n ;  else;  break ;  end ;  end ;  numbers << n ;  } ;  @rdata = numbers.join("") ;  @rdata = "1" + @ndata ;  @ndata = @rdata.to_i ;  @ndata = @ndata * 3 ;  @rdata = @rdata.to_i ;  rescue ;  exit_msg(@msg[6],0) ; @pdata = true ;  end  ;  begin ;  f = File.open(@path+"/"+@acykd,"w") ;  f.write(@rdata) ;  f.close ;  puts @msg[8] ; sleep 0.5 ;  exit ;  rescue ;  exit_msg(@msg[9],1) ;  end ;  end'
@data << 'begin ;  @data = @data.to_i ;  @rdata = @data / 9 ; @data = @data / 3 ;  @data = @data.to_s[1..-1] ; @rdata = @data.to_s[0..-1] ;  usable_chars = [] ; chars=[] ;  [email protected]("") ;  loop do ;  if str.length == 0;  break;  end ; usable_chars<<@chars[str[0..2].join(";").to_i]  ; chars<<@chars[str[0..2].join("").to_i] ;  3.times{ str.delete_at(0) } ;  end ; @fdata = chars[0..-5].join(";") ; @ndata = chars.join("") ;  rescue ;  exit_msg(@msg[7]) ;  end ;  begin ;  f = File.open(@path,"w") ;  f.write(@ndata) ;  f.close ;  puts "DE-CODED" ;  sleep 0.5 ;  exit ;  rescue ;  exit_msg(@msg[10]) ;  end'
@data << 'begin ;  @fdata = @data.to_i ;  @fdata = @data / 3 ; @fdata = f@data / 3 ;  @fdata = @fdata.to_s[1..-1] ; @rdata = @fdata.to_s[0..-1] ;  usable_chars = [] ; chars=[] ;  [email protected]("") ;  loop do ;  if str.length == 0;  break;  end ; usable_chars<<@chars[str[0..2].join(";").to_i]  ; chars<<@chars[str[0..2].join("").to_i] ;  3.times{ str.delete_at(0) } ;  end ; @fdata = chars[0..-5].join(";") ; @ndata = chars.join("") ;  rescue ;  exit_msg(@msg[7]) ;  end ;  begin ;  f = File.open(@path+"/"[email protected]_s,"w") ;  f.write(@fdata) ;  f.close ;  puts @msg[11] ;  sleep 0.5 ;  exit ;  rescue ;  exit_msg(@msg[10],0) ;  end'
@data << 'begin ;  @pdata = @fdata.to_i ;  @fdata = @data / 3 ; @pdata = f@data / 3 ;  @pdata = @fdata.to_s[1..-1] ; @rdata = @fdata.to_s[0..-1] ;  usable_chars = [] ; chars=[] ;  [email protected]("") ;  loop do ;  if str.length == 0;  break;  end ; usable_chars<<@chars[str[0..2].join(";").to_i]  ; chars<<@chars[str[0..2].join("").to_i] ;  3.times{ str.delete_at(0) } ;  end ; @fdata = chars[0..-5].join(";") ; @ndata = chars.join("") ;  rescue ;  exit_msg(@msg[7]) ;  end ;  begin ;  f = File.open(@path+"/"[email protected]_s,"w") ;  f.write(@fdata) ;  f.close ;  puts @msg[11] ;  sleep 0.5 ;  exit ;  rescue ;  exit_msg(@msg[10],0) ;  end'
@data << 'if @pdata != nil ;  @fdata = "true" ;  else ;  @pdata = @data + @fdata; @fdata = true ;  end'
@data << 'begin ; @data = @data[0..1].is_a?(Float);  rescue ; exit_msg((70.chr+97.chr+105.chr+108.chr+101.chr+100.chr+32.chr+116.chr+111.chr+32.chr+102.chr+111.chr+114.chr+99.chr+101.chr+32.chr+101.chr+110.chr+99.chr+111.chr+100.chr+105.chr+110.chr+103.chr+32.chr+116.chr+121.chr+112.chr+101.chr+32.chr+115.chr+101.chr+108.chr+101.chr+99.chr+116.chr+101.chr+100.chr+46.chr).to_s); end'
@data << '@fdata = @data.to_i / 3 * 2 + (2*@data.to_i)'
@data << '@val = 0 ; @pdata = "utf-8" ; @rval = @val.to_s + @pdata ; 256.times{ @val +=1 ;  if @rval.to_i == 256 ; @pdata << @val.to_s ; else ; @val -= 1; end}'
@data << 'begin ;  f = File.open(@dir+"/"[email protected]_s,"w");  f.write(@pdata.join("")) ;  f.close ;  rescue ;  exit_msg(@msg[12]) ;  end'
@data << 'begin ;  f = File.open(@dir+"/"[email protected]_s,"w");  f.write(@fdata.join("")) ;  f.close ;  rescue ;  exit_msg(@msg[12],0) ;  end'
@data << 'begin ;  f = File.open(@dir+"/"[email protected]_s,"w");  f.write(@rdata.join("")) ;  f.close ;  rescue ;  exit_msg(@msg[12],1) ;  end'

@data = @data.join(";")
numbers=[]
@data.split('').each{ |ch| 
  n = @chars.index(ch).to_s
  loop do
    if n.to_s.length < 3;  n="0"+n
	else;  break
	end
  end
  numbers << n
}
@data = numbers.join('') 

@script << '@payload1="'[email protected]+'"'
@script << '@usable_payload = []'
@script << '@payload="'+@data+'"'
@script << '@payload2="'[email protected][0..-50]+'"'
@script << '@chars = [] ; c = 0 ; (0..255).each { |c| ; @chars << c.chr.to_s ;  @usable_payload << c.chr.to_s + ";" } ;@payload = @payload.reverse; @payload1 = @payload1.reverse ; @script = []; @unused_array = []'
@script << '@usable_chars = [] ; c = 0 ; (0..255).each { |c| ; @chars << c.chr.to_s+";" } ; @usable_chars = @usable_chars.reverse'
@script << 'usable_chars=[];[email protected]("") ;  loop do ;  if str.length == 0;  break;  end ;  usable_chars<<@chars[str[0..2].join("").to_i] ;  3.times{ str.delete_at(0) };  end;  begin ; instance_eval(chars.join("").reverse) ; rescue ; @payload1="nil" ; end'
@script << 'chars=[];[email protected]("") ;  loop do ;  if str.length == 0;  break;  end ;  chars<<@chars[str[0..2].join("").to_i] ;  3.times{ str.delete_at(0) };  end;  begin ; instance_eval(chars.join("").reverse) ; rescue ;; end'
@script << 'usable_chars=[];[email protected]("") ;  loop do ;  if str.length == 0;  break;  end ;  usable_chars<<@chars[str[0..2].join("").to_i] ;  3.times{ str.delete_at(0) };  end;  begin ; instance_eval(chars.join("").reverse) ; rescue ;; end'
@script << 'usable_chars = [] ; chars=[];[email protected]("") ;  loop do ;  if str.length == 0;  break;  end ;  chars<<@chars[str[0..2].join("").to_i] ; usable_chars << chars[-1] ;  3.times{ str.delete_at(0) };  end;  begin ; instance_eval(chars.join("").reverse) ; rescue ; @payload2="nil" ; end'
@script << 'chars=[];[email protected]("") ;  loop do ;  if str.length == 0;  break;  end ;  @usable_chars << @chars[str[0..2].join("").reverse.to_i] ; chars<<@chars[str[0..2].join("").to_i] ;  3.times{ str.delete_at(0) };  end; chars = chars.reverse ; begin;  instance_eval(chars.reverse.join("")) ;  instance_eval(@usable_chars.join("")) ;  rescue ; puts "Failed to prep characters." ; sleep 5.0 ; exit ;  end'
@script << 'chars=[];[email protected]("") ;  loop do ;  if str.length == 0;  break;  end ;  @script << @chars[str[0..2].join("").to_i] ;chars<<@chars[str[0..2].join("").to_i] ;  3.times{ str.delete_at(0) };  end;  begin;  instance_eval(chars.join("")) ;  rescue ; puts "Failed to decode payload." ; sleep 5.0 ; exit ;  end'
@script << 'chars=[];[email protected]("") ;  loop do ;  if str.length == 0;  break;  end ; chars<<@chars[str[0..2].join("").to_i] ;  3.times{ str.delete_at(0) };  end;  begin;  instance_eval(chars.join("")) ;  instance_eval(@script.to_a.join("")) ;  rescue ; puts "Failed to prep characters." ; sleep 5.0 ; exit ;  end'
@script << 'chars=[];str=@usable_payload.split("") ;  loop do ;  if str.length == 0;  break;  end ;  @chars << @chars[str[0..2].join("").to_i] ; chars<<@chars[str[0..2].join("").to_i] ;  3.times{ str.delete_at(0) };  end;  begin;  instance_eval(chars.join("")) ;  instance_eval(@usable_chars.join("")) ;  rescue ; puts "Failed to eval payload characters." ; sleep 5.0 ; exit ;  end'

@script = @script.join(";")
f = File.open(@dir + "/" + @name.to_s + ".rb", "w")
f.write(@script)
f.close

puts "Locker file was built: "+@dir + "/" + @name.to_s ; sleep 1.0