/dumpdecrypted

Dumps decrypted mach-o files from encrypted iPhone applications from memory to disk. This tool is necessary for security researchers to be able to look under the hood of encryption. (Updated with Support to new Xcode and SDK 6.0 by MPow)

Primary LanguageC

*******UPDATED TO WORK WITH NEW VERSIONS OF XCODE (SANBOXED VERSIONS), IOS 6 SDK by MPOW AND ADDED A BASH SCRIPT *******
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I have added a bash script at the original version to make easier the decrypting and the dumping. 
USAGE:
decrypt [FILE] -> decrypt
decrypt -dump [FILE] -> decrypt and dump
decrypt -app [name of the bundle] -> Find the path of the app and then ask what to do (dump or decrypt).
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that can be useful for decrypt App binaries that are encrypted, for example to Class-Dump it and make tweak!

Dumps decrypted iPhone Applications to a file - better solution than those GDB scripts for non working GDB versions
(C) Copyright 2011 Stefan Esser


Compile:

First adjust the Makefile if you have a different iOS SDK installed.

And then just: make


Usage:

iPod:~ root# DYLD_INSERT_LIBRARIES=dumpdecrypted.dylib /var/mobile/Applications/xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx/Scan.app/Scan
mach-o decryption dumper

DISCLAIMER: This tool is only meant for security research purposes, not for application crackers.

[+] Found encrypted data at address 00002000 of length 1826816 bytes - type 1.
[+] Opening /private/var/mobile/Applications/xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx/Scan.app/Scan for reading.
[+] Reading header
[+] Detecting header type
[+] Executable is a FAT image - searching for right architecture
[+] Correct arch is at offset 2408224 in the file
[+] Opening Scan.decrypted for writing.
[-] Failed opening. Most probably a sandbox issue. Trying something different.
[+] Opening /private/var/mobile/Applications/xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx/tmp/Scan.decrypted for writing.
[+] Copying the not encrypted start of the file
[+] Dumping the decrypted data into the file
[+] Copying the not encrypted remainder of the file
[+] Closing original file
[+] Closing dump file