RPC

rpc.js

#!/usr/bin/env iojs --harmony_arrow_functions
'use strict';

const co = require('co');
const frida = require('frida');

co(function *() {
  const session = yield frida.attach('cat');
  const script = yield session.createScript('(' +
      agent.toString() + ').call(this);');
  yield script.load();
  const exports = yield script.getExports();
  console.log(yield exports.add(2, 3));
  console.log(yield exports.sub(5, 3));
  yield session.detach();
});

function agent() {
  'use strict';

  rpc.exports = {
    add(a, b) {
      return a + b;
    },
    sub(a, b) {
      return new Promise(resolve => {
        setTimeout(() => {
          resolve(a - b);
        }, 100);
      });
    }
  };
}

rpc.py

import frida

session = frida.attach("cat")
script = session.create_script("""\
'use strict';

rpc.exports = {
  add(a, b) {
    return a + b;
  },
  sub(a, b) {
    return new Promise(resolve => {
      setTimeout(() => {
        resolve(a - b);
      }, 100);
    });
  }
};
""")
script.load()
print(script.exports.add(2, 3))
print(script.exports.sub(5, 3))
session.detach()