Zibri

#!/bin/bash
#
# Samsung SSD Firmware decompressor & deobfuscator
# By Zibri / RamJam in 2024
#
# This version uses openssl.
#

if ! which &>/dev/null openssl
 	then

bitonic

// See <https://mazzo.li/posts/stopping-linux-threads.html>
// for blog post.
//
// Spawns a thread with a server listening on 55555 UDP, and
// then terminates it after 1 minute.
//
// I compile and run with
//
//     clang++ -Wall -std=c++20 server.cpp -lpthread -o server && ./server
//

Hirrolot

Supercompilation is a deep program transformation technique due to V. F. Turchin, a prominent computer scientist, cybernetician, physicist, and Soviet dissident. He described the concept as follows [^supercompiler-concept]:

A supercompiler is a program transformer of a certain type. The usual way of thinking about program transformation is in terms of some set of rules which preserve the functional meaning of the program, and a step-by-step application of these rules to the initial program. ... The concept of a supercompiler is a product of cybernetic thinking. A program is seen as a machine. To make sense of it, one must observe its operation. So a supercompiler does not transform the program by steps; it controls and observes (SUPERvises) the running of the machine that is represented by the program; let us call this machine M₁. In observing the operation of

matteyeux

[
    {
        "url": "https://updates.cdn-apple.com/2023SummerSeed/patches/042-21091/60572AF0-9BC3-465F-89ED-77117194CB26/com_apple_MobileAsset_SoftwareUpdate/3df121022bd578846478faa25a4dcf3055396954.zip",
        "build": "21N5207g",
        "filename": "iBEC.n301.RELEASE.im4p",
        "kbag": "AB7893B981E44BFF298328C89C826F8BA6EF1A7ADC80DB156C9D55D9F4E27E8AD2CC21AFA42A41E1392B57E9FE90D992",
        "key": "34b218667cd03eb93e073b9b3bca4a865b20f130550a800b2aa2c1c2348041865cee47db7e3bcda739d05adde9f9f716"
    },
    {
        "url": "https://updates.cdn-apple.com/2023SummerSeed/patches/042-21091/60572AF0-9BC3-465F-89ED-77117194CB26/com_apple_MobileAsset_SoftwareUpdate/3df121022bd578846478faa25a4dcf3055396954.zip",

quad

Interceptors Are Functions Too

I could not agree more with my colleague and friend Travis Johnson's opinion that "[INTERCEPTORS ARE SO COOL][iasc]!" In that post, he succinctly describes the [Interceptor pattern][pattern] as used adroitly by [OkHttp][okhttp]. But, as is often the case, I believe a complicated object-oriented pattern obscures the simple functional gem within it.

What is an Interceptor?

I'll quote liberally from [OkHttp's documentation on the topic][okhttp-interceptor]:

Interceptors are a powerful mechanism that can monitor, rewrite, and retry calls. […] >

alin23

#!/usr/bin/env fish

# Needs rg: `brew install ripgrep`

set -xg visitedLibs

function libdeps -a bin depth -d "Finds all dylibs that a binary depends on recursively and prints them on separate lines, sorted alphabetically"
    if test -z "$depth"
        set depth 0
    end

zhangyoufu

(gdb) set $rip=0xdeadbeef
(gdb) c
Continuing.

Program received signal SIGSEGV, Segmentation fault.
0x00000000deadbeed in ?? ()
=> 0x00000000deadbeed:
Cannot access memory at address 0xdeadbeed

zhuowei

Also see https://github.com/zhuowei/CoreTrustDemo/blob/main/littlemis.txt for my previous notes

first time X509ChainCheckPathWithOptions, param3 (options) is null
second time X509ChainCheckPathWithOptions, param3 (options) is set
-> This is the call out of CTEvaluateAMFICodeSignatureCMS_MaxDigestType, and is the one that sets the flags

struct ContentInfoSignedData {
  int always4; // 0x0
  void* someBufferFromCTParseContentInfoSignedDataArg6; // 0x8
  // ?

saagarjha

// As seen on:
// https://federated.saagarjha.com/notice/AaEMQpJBSbxhLyxYzg
// https://twitter.com/_saagarjha/status/1707423903969341949

// Compiling: gcc mmap_vs_read.c -O3 -o mmap_vs_read
// Usage: ./mmap_vs_read <bigfile> <mmap|read>

#include <fcntl.h>
#include <stddef.h>
#include <stdio.h>

nicolas17

    [
        {
            "type": "ota",
            "prerequisiteBuild": "20G5070a",
            "deviceMap": [
                "iPad7,4"
            ],
            "url": "https://updates.cdn-apple.com/2023SummerSeed/patches/042-36984/458DD0C0-49B8-40F7-9D0D-D9A82C76DFDA/com_apple_MobileAsset_SoftwareUpdate/69f1a7b082026702574e20f83ea4e2115ecd6ae7.zip",
            "active": true,
            "hashes": {