Initial commit

brute_crc32.lua

@@ -0,0 +1,28 @@
+local crc32 = require 'crc32'
+
+function edit_file(input_file, line, content)
+  local file = io.open(input_file, 'r')
+  local file_content = {}
+  for line in file:lines() do
+      table.insert(file_content, line)
+  end
+  io.close(file)
+
+  file_content[line] = content
+
+  file = io.open(input_file, 'w')
+  for index, value in ipairs(file_content) do
+      file:write(value..'\n')
+  end
+  io.close(file)
+end
+
+local attempts = 0
+
+repeat
+  local random_crc32  = crc32.hash(attempts)
+  edit_file('i_know_my_crc32.lua', 13, "local crc32_expected = '" .. random_crc32 .. "'")
+  local match = require('i_know_my_crc32')
+  attempts = attempts + 1
+  print(attempts)
+until(match)