payload-dumper-go - an android OTA payload dumper written in Go

项目说明

payload-dumper-go

An android OTA payload dumper written in Go.

Features

!screenshot

See how fast payload-dumper-go is: (MacBook Pro 16-inch 2019 i9-9750H, 16G)

Cautions

Limitations

Installation

Linux and macOS (From releases, recommended)

1. Download the latest binary for your platform from here and extract the contents of the downloaded file to a directory on your system.
2. Make sure the extracted binary file has executable permissions. You can use the following command to set the permissions if necessary:

3. Run the following command to add the directory path to your system's PATH en :

Note: This command sets the PATH en only for the current terminal session. To make it permanent, you need to add the command to your system's profile file (e.g. .bashrc or .zshrc for Linux/Unix systems).

macOS (Homebrew)

Just simply run:

Windows

1. Download the latest binary for your platform from here and extract the contents of the downloaded file to a directory on your system.
2. Open the Start menu and search for "En ".
3. Click on "Edit the system en ".
4. Click on the "En " button at the bottom right corner of the "System Properties" window.
5. Under "System ", scroll down and click on the "Path" , then click on "Edit".
6. Click "New" and add the path to the directory where the extracted binary is located.
7. Click "OK" on all the windows to save the changes.

Usage

Run the following command in your terminal:

The input can be a raw payload.bin or an OTA zip, detected by content.

Incremental (delta) OTA

Extract the base (previous) full OTA first, then pass it via -old:

Delta payloads omit the dm- hash tree and FEC parity for partitions like system
and , expecting the device to compute them on install. Both are computed here,
so the output is bit-exact.

-no-fec skips FEC generation and final image for partitions that
require FEC. These images must not be flashed; use this option only to inspect contents. Note that -m reports 100% when
the operations finish, while FEC still runs; wait for the process to exit.

Library usage

Performance

Machine: MacBook Pro 16-inch 2021 (Apple M1 Max, 64G), OS: macOS Sonoma 14.5, Go: 1.22.4.

Tested with a 2.31GB payload.bin file from (akita).

Why not use the pure Go implementation for xz decompression?

The pure Go implementation of xz is very slow compared to the C implementation used with CGO. Here's the result with the same payload.bin file on the same conditions:

As you can see, the pure Go implementation is about 6~ times slower than the C implementation.

Sources

License

This 源码 代码 is licensed under the Apache License 2.0 as described in the LICENSE file.

项目信息

开发语言：Go

Star 数：3535

技术要点

该项目属于黑客技术方向的开源资源，代码结构清晰，适合安全研究人员学习参考。项目围绕an android OTA payload dumper written in Go展开，提供了可运行的实现，对理解相关安全机制、工具原理与攻防技术具有较高的研究价值。

从技术实现角度看，此类项目的核心在于对底层原理的深入理解与工程化落地。开发者在研究过程中可以结合官方文档与社区讨论，梳理项目的初始化流程、核心模块职责与数据流转，逐步掌握其中的技术细节与设计思路。

使用与学习建议

1. 下载源码压缩包，解压到本地环境。

2. 根据项目类型准备对应的运行环境与依赖。

3. 按照 README 中的步骤完成配置与部署。

4. 在隔离的测试环境中运行验证，避免影响生产系统。

免责声明

本资源来源于开源社区，仅供安全研究、技术学习与合法授权范围内的攻防演练使用，请勿用于任何非法或侵害他人权益的用途。使用本项目产生的一切后果由使用者自行承担。