How do I detect that an iOS app is running on a jailbroken phone?

Question

If I want my app to behave differently on a jailbroken iPhone, how would I go about determining this?

Answer 1

Some common files to check for: /Library/MobileSubstrate/MobileSubstrate.dylib

/Applications/Cydia.app

/var/cache/apt

/var/lib/apt

/var/lib/cydia

/var/log/syslog

/var/tmp/cydia.log

/bin/bash

/bin/sh

/usr/sbin/sshd

/usr/libexec/ssh-keysign

/etc/ssh/sshd_config

/etc/apt

Most check for Cydia related files.