Libue4.so - Dump

Have questions or run into a tough packed UE4 game? Leave a comment or ping me on Twitter @[yourhandle].

var m = Process.findModuleByName("libue4.so"); if (m === null) console.log("[!] libue4.so not found in memory"); else var base = m.base; var size = m.size; console.log("[+] Found libue4.so at " + base + " size: " + size); var data = ptr(base).readByteArray(size); var f = new File("/sdcard/libue4_dumped.so", "wb"); f.write(data); f.close(); console.log("[+] Dumped to /sdcard/libue4_dumped.so"); dump libue4.so

cat /proc/<PID>/maps | grep libue4.so You’ll see a region like: Have questions or run into a tough packed UE4 game

Instead, you see a tiny stub, a packed binary, or nothing at all. That’s because many developers encrypt, compress, or load the true UE4 native library dynamically at runtime. That’s because many developers encrypt, compress, or load

If you’ve ever tried to reverse engineer a mobile game built with Unreal Engine 4 , you’ve likely run into a wall: the real libue4.so is nowhere to be found.

Remember: if the game is well-protected, you might need to bypass anti-tampering checks before dumping. That’s a battle for another blog post.