BoringSecretHunter

A Ghidra-based tool designed to analyze binaries and identify the ssl_log_secret() function. The tool extracts and prints the byte pattern of this function, making it ready for use with Frida for efficient function hooking and TLS key extraction. Its primary purpose is to analyze binaries with BoringSSL statically linked into them.

Building

Step 1: Build the Docker Image

Run the following command in the root of the BoringSecretHunter directory to build the Docker image:

docker build -t boringsecrethunter .

Usage

Once the image is built, you can run the Docker container and provide the binary you want to analyze.

For example, if your binary is named libcrypto.so and is located in the binary/ folder, run:

docker run --rm -v "$(pwd)/binary":/usr/local/src/binaries -v "$(pwd)/results":/host_output boringsecrethunter


Analyzing libcronet.113.0.5672.61.so...
    	BoringSecretHunter
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⠀⠀⣠⣾⣿⣿⠟⠁⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀
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Identifying the ssl_log_secret() function for extracting key material using Frida.
Version: 0.6 by Daniel Baier

[*] Start analyzing binary libcronet.113.0.5672.61.so (CPU Architecture: AARCH64). This might take a while ...


[*] Target function identified (ssl_log_secret):

Function label: FUN_00493BB0
Function offset: 00493BB0 (0X493BB0)
Byte pattern for frida (friTap): 3F 23 03 D5 FF C3 01 D1 FD 7B 04 A9 F6 57 05 A9 F4 4F 06 A9 FD 03 01 91 08 34 40 F9 08 11 41 F9 C8 07 00 B4

Debugging

If you encounter any problems try to run BoringSecretHunter at first in interactive mode and work with the .py script:

docker run -it --entrypoint /bin/bash  -v "$(pwd)/binary":/usr/local/src/binaries -v "$(pwd)/results":/host_output boringsecrethunter