woozoo86/removepie

removePIE changes the MH_PIE flag of the MACH-O header on iOS applications to disable ASLR on applications

removePIE

This is an iOS tool which flips the MH_PIE bit in an application. This disables the Address Space Layout Randomization of an application.

Building

Building has been set-up to use OS-X, xCode and the iOS 6.0 SDK in default directories. execute "make" from the command line to execute the included makefile. This file includes the location of the iOS 6.0 SDK and the location of the ARM compiler of the SDK. The makefile also signs the compiled executable using the "codesign" tool provided by xCode. Alterations will need to be made to the makefile for compiling on Windows or Linux systems.

Usage

copy the compiled executable using scp i.e

desktop $ scp ./removePIE root@<IP address of phone>:/usr/bin/removePIE
root \# ./removePIE <application binary>

The is most likely located in a sub-directory of /private/var/mobile/Applications/ on the iphone

Issues

Issues have been found with applications on ios 5.1.1, i have found that you have to resign the application binary using the "codesign" tool in xcode to get it to execute. i have no idea as yet to why ldone or ldid doesn't work. ios 6.0.1 did not require re-signing of the application binary. '

License

Copyright (c) 2013 Peter Fillmore

Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.