sim simrat39

Android APK HTTPS user certificates how-to

Starting with Android Nougat, Google changed the way apps handle user certificates:

Apps that target API Level 24 and above no longer trust user or admin-added CAs for secure connections, by default.

This means that certificates issued by applications like [Charles][charles] or [mitmproxy][mitmproxy] are no longer accepted, so these proxies won't work for HTTPS traffic.

This tutorial explains what needs to be done to overcome that restriction and be able to sniff any Android app's HTTPS requests.

Migrated with additional information to my blog: https://msfjarvis.dev/posts/understanding-and-resolving-selinux-denials-on-android/

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Denial in question

avc: denied { read write } for pid=29059 comm="i.tetherservice" name="ipa" dev="tmpfs" ino=11991 scontext=u:r:system_app:s0 tcontext=u:object_r:ipa_dev:s0 tclass=chr_file permissive=0

sepolicy fix

Clone git repository

git clone https://aur.archlinux.org/oracle-xe.git
cd oracle-xe

Download oracle-xe-rpm.zip

wget http://download.oracle.com/otn/linux/oracle11g/xe/oracle-xe-11.2.0-1.0.x86_64.rpm.zip

You can run these commands to encrypt or decrypt a string:

Command

To encrypt:

printf "Lorem ipsum dolor sit amet, ..." | \
  openssl enc -e -base64 -A -pbkdf2 -aes-256-cbc -pass pass:"my-password"

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