frida_type_casting.js

// https://reverseengineering.stackexchange.com/a/25183
function byteToHex(byte) {
  var HexClass = Java.use('org.apache.commons.codec.binary.Hex')
  var StringClass = Java.use('java.lang.String')
  var hexChars = HexClass.encodeHex(byte)
  return StringClass.$new(hexChars).toString()
}

// https://reverseengineering.stackexchange.com/a/22255
function byteToString(byte) {
  var result = ''
  var buffer = Java.array('byte', byte)
  for (var i = 0; i < buffer.length; ++i) {
    result += (String.fromCharCode(buffer[i] & 0xff))
  }
  return result
}