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cilame 2023-01-31 18:38:38 +08:00
parent 35e5842b39
commit 93360e9c96
1 changed files with 38 additions and 36 deletions
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74
tools/bytejs.js
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@ -1,26 +1,34 @@
// makebytejs.js
const vm = require('vm');
const fs = require('fs').promises;
const _module = require('module');
const v8 = require('v8');
var vm = require('vm');
var fs = require('fs');
var _module = require('module');
var v8 = require('v8');
v8.setFlagsFromString('--no-lazy');
async function compileFile(filePath) {
const code = await fs.readFile(filePath, 'utf-8');
const script = new vm.Script(_module.wrap(code));
const bytecode = script.createCachedData();
await fs.writeFile(filePath.replace(/\.js$/i, '.bytecode'), bytecode);
function xor(buffer){
var key = '123456789'.split('').map(function(e){return e.charCodeAt()})
for (var i = 0; i < buffer.length; i++) {
buffer[i] ^= key[i % key.length]
}
}
compileFile('./test.js');
function compileFile(filePath) {
if (!fs.existsSync(filePath)) return
var code = fs.readFileSync(filePath, 'utf-8');
var script = new vm.Script(_module.wrap(code));
var bytecode = script.createCachedData();
xor(bytecode)
fs.writeFileSync('main.bytecode', bytecode);
}
compileFile('./main_.js');
// runbytejs.js
const _module = require('module');
const path = require('path');
const fs = require('fs')
const vm = require('vm');
const v8 = require('v8');
var _module = require('module');
var path = require('path');
var fs = require('fs')
var vm = require('vm');
var v8 = require('v8');
v8.setFlagsFromString('--no-flush-bytecode');
function validateString(value, name) {
if (typeof value !== 'string') {
@ -28,8 +36,8 @@ function validateString(value, name) {
}
}
function makeRequireFunction(mod) {
const Module = mod.constructor;
const require = function require(path) {
var Module = mod.constructor;
var require = function require(path) {
return mod.require(path);
};
require.resolve = function resolve(request, options) {
@ -45,22 +53,18 @@ function makeRequireFunction(mod) {
require.cache = Module._cache;
return require;
}
const HeaderOffsetMap = {
var HeaderOffsetMap = {
'magic': 0,
'version_hash': 4,
'source_hash': 8,
'flag_hash': 12
};
let _flag_buf;
function getFlagBuf() {
if (!_flag_buf) {
const script = new vm.Script("");
_flag_buf = getHeader(script.createCachedData(), 'flag_hash');
}
return _flag_buf;
var script = new vm.Script("");
return getHeader(script.createCachedData(), 'flag_hash');
}
function getHeader(buffer, type) {
const offset = HeaderOffsetMap[type];
var offset = HeaderOffsetMap[type];
return buffer.slice(offset, offset + 4);
}
function setHeader(buffer, type, vBuffer) {
@ -68,7 +72,7 @@ function setHeader(buffer, type, vBuffer) {
}
function buf2num(buf) {
// 注意字节序问题
let ret = 0;
var ret = 0;
ret |= buf[3] << 24;
ret |= buf[2] << 16;
ret |= buf[1] << 8;
@ -76,11 +80,11 @@ function buf2num(buf) {
return ret;
}
function loadBytecode(filePath) {
const bytecode = fs.readFileSync(filePath, null);
console.log(bytecode.toString('latin1'))
var bytecode = fs.readFileSync(filePath, null);
xor(bytecode)
setHeader(bytecode, 'flag_hash', getFlagBuf());
const sourceHash = buf2num(getHeader(bytecode, 'source_hash'));
const script = new vm.Script(' '.repeat(sourceHash), {
var sourceHash = buf2num(getHeader(bytecode, 'source_hash'));
var script = new vm.Script(' '.repeat(sourceHash), {
filename: filePath,
cachedData: bytecode,
lineOffset: 0,
@ -92,17 +96,15 @@ function loadBytecode(filePath) {
return script;
}
_module._extensions['.bytecode'] = function (module, filename) {
const script = loadBytecode(filename, false);
const wrapperFn = script.runInThisContext({
var script = loadBytecode(filename, false);
var wrapperFn = script.runInThisContext({
filename: filename,
displayErrors: true,
lineOffset: 0,
columnOffset: 0,
});
const require = makeRequireFunction(module);
var require = makeRequireFunction(module);
wrapperFn.bind(module.exports)(module.exports, require, module, filename, path.dirname(filename));
}
require('./test.bytecode')
console.log(window.top == window.self)
require('./main.bytecode')