khanhduytran0

Recap

As you may have known, we recently managed to bring multitask to LiveContainer. This originally came from FrontBoardAppLauncher which was reverse engineered of various Apple apps: ClarityBoard, SpringBoard, Xcode PreviewShell, etc. A quick recap of how we worked on it:

• I began reverse engineering said apps to study how to use various Private API of FrontBoard, RunningBoardServices and UIKit, resulted in MySystemShell and FrontBoardAppLauncher
• I found app could spawn multiple processes thanks to the writeup of NSExtension
• We found we could extend memory limit by setting a hidden NSExtensionPointIdentifier

However, as more and more people get to try it, we were reported that physical keyboard input wouldn't work. (LiveContainer/LiveContainer#524)

If anyone could figure it out, we will forever owe you.

profiles

from remotezip import RemoteZip
import requests
import concurrent.futures

def ipsw_api(endpoint):
    return requests.get('https://api.ipsw.me/v4/' + endpoint).json()

def process_firmware(firmware):
    try:
        with RemoteZip(firmware['url']) as zip:

saagarjha

// Sometimes you have a large file on a small disk and would like to "transform"
// it in some way: for example, by decompressing it. However, you might not have
// enough space on disk to keep both the the compressed file and the
// decompressed results. If the process can be done in a streaming fashion, it
// would be nice if the file could be "drained"; that is, the file would be
// sequentially deleted as it is consumed. At the start you'd have 100% of the
// original file, somewhere in the middle you'd have about half of the original
// file and half of your output, and by the end the original file will be gone
// and you'll be left with just the results. If you do it this way, you might
// be able to do the entire operation without extra space!

nicolas17

.global _main
.extern _putchar

.align 4

_main:
    // prolog; save fp,lr,x19
    stp x29, x30, [sp, #-0x20]!
    str x19, [sp, #0x10]

saagarjha

// clang path_hook.mm -shared -ldl -g -framework Foundation path_hook.o -L/usr/lib/swift

#include <cassert>
#include <cstdint>
#include <dlfcn.h>
#include <mach/arm/vm_param.h>
#include <mach/kern_return.h>
#include <mach/mach_init.h>
#include <mach/vm_map.h>
#include <mach/vm_prot.h>