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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.

Install / Use

npx skills add stefanesser/dumpdecrypted

Installs into whichever agent you are using.

About this skill

Quality Score

0/100

Supported Platforms

Universal

README

Dumps decrypted iPhone Applications to a file - better solution than those GDB scripts for non working GDB versions (C) Copyright 2011-2014 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

Related Skills

View on GitHub
GitHub Stars3.0k
CategoryEducation
Updated2d ago
Forks663

Languages

C

Security Score

80/100

Audited on Aug 6, 2026

No findings