Created
May 29, 2019 17:00
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| #!/usr/bin/env node | |
| const fs = require('fs') | |
| const path = require('path') | |
| const ArgumentParser = require('argparse').ArgumentParser | |
| const sourceMap = require('source-map') | |
| const parser = new ArgumentParser({ | |
| addHelp: true, | |
| description: 'Deobfuscate JavaScript code using a source map', | |
| }) | |
| parser.addArgument(['src-js'], { help: 'Path to javascript file to recover', nargs: 1 }) | |
| parser.addArgument(['out-dir'], { help: 'Path to directory where sources will be dumped', nargs: 1 }) | |
| const args = parser.parseArgs() | |
| const code = fs.readFileSync(args['src-js'][0], 'utf8') | |
| const mapData = fs.readFileSync(`${args['src-js'][0]}.map`, 'utf8') | |
| const map = new sourceMap.SourceMapConsumer(mapData) | |
| const outDir = args['out-dir'][0] | |
| if (!fs.existsSync(outDir)) { | |
| fs.mkdirSync(outDir, { recursive: true }) | |
| } | |
| for (let i = 0; i < map.sources.length; i++) { | |
| const sUrl = map.sources[i] | |
| const dest = outDir + '/' + sUrl | |
| const contents = map.sourceContentFor(sUrl) | |
| console.log('Writing', sUrl) | |
| const dirname = path.dirname(dest) | |
| if (!fs.existsSync(dirname)) { | |
| fs.mkdirSync(dirname, { recursive: true }) | |
| } | |
| fs.writeFileSync(dest, contents, 'utf8', 0o644) | |
| } |
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