oppo_decrypt_ozip

Oppo/Oneplus .ozip Firmware decrypter

Tested with CPH1707EX, CPH1611EX OTA Zip and Python 3.6

• ozipdecrypt.py : Decrypt Oppo .ozip to .zip
• decrypt.py : Decrypts any part of the firmware

Based on python 3.6

Prerequirement:

'pip3 install pycrypto' or 'pip3 install pycryptodome'

Usage:

• OTA OZIP decryption: 'python3 ozipdecrypt.py CPH1707EX_OTA_0070_all.ozip'

• OTA Boot.img decryption: 'python3 ozipdecrypt.py boot.img'

File will be decrypted as *.zip or boot.img.dec

License:

Share, modify and use as you like, but refer the original author !

Tutorial:

For a tutorial on aes key extraction, head over here.

For extraction of libpatchapply.so or /sbin/recovery, use: './ofp_libextract.y [your_ofp_file]' If you're getting a recovery.cpio.7z file, extract using 7z to get the /sbin/recovery file.