computercraft_test_malware

--O Update Test Malware
--By Atenefyr
--This program is in no way malicious, it is instead intended for demonstration purposes.
--This piece of malware only functions in O versions below 2.2.1.

--shut down malware if wrong version
if O.getReleaseVersion then
  local vn = O.getReleaseVersion():gsub("%.", "") --it's an awful, but effective and easy way of detecting it
  if tonumber(vn) > 22 then
    printError("This test malware is patched as of O 2.2.1.")
    error()
  end
end

local txt1 = [[
os.loadAPI("/systemO/odata/O")
O.pushNotification("O Update Available!", colors.white, colors.gray, 2)
os.unloadAPI("/systemO/odata/O")
]]
local txt2 = [[
print("Test Malware Payload")
sleep(2)
]]
local function inject(file, txt)
  local open = fs.open(file, "r")
  local all = open.readAll()
  open.close()

  local open = fs.open(file, "w")
  open.writeLine(txt)
  open.write(all)
  open.close()
end
inject("*systemO/launchpad", txt1) --fake update notification
inject("*systemO/programs/update", txt2) --fake payload
print("Test malware injected")