Automated Tools for Unpacking and Repacking Android ROMs: Techniques, Workflows, and Security Implications

unpacker for super.img

This tool also includes a built-in into sub-partitions (system_a, vendor_b, product, etc.).

Flash

: Use Fastboot or a custom recovery like TWRP to flash your modified image back to your device. Important Safety Tips

Total time for full ROM

| Task | Manual (Expert) | Auto Tool (CRB/AIK) | | :--- | :--- | :--- | | Unpack boot.img | 5 commands, 2 mins | Drag & drop, 5 secs | | Convert system.dat.br to folder | 4 tools (brotli, sdat2img, etc.) | One click, 30 secs | | Repack with changes | 12 commands, risk of error | One click, 1 min | | | 45–60 minutes | 3–5 minutes |

Boot.img:

To understand how these tools work, one must first understand what they are "unpacking." A standard Android ROM (usually a .zip or .img file) consists of several key partitions: Contains the kernel and ramdisk.

3. ext4fs / make_ext4fs