kcchu

char ____ZN7Backend6Google12SSBUtilities24shouldConsultWithTencentEv_block_invoke_2(void * _block) {
    rax = [NSLocale currentLocale];
    rax = [rax retain];
    r14 = [[rax countryCode] retain];
    [rax release];
    rbx = [r14 isEqualToString:@"CN"] != 0x0 ? 0x1 : 0x0;
    [r14 release];
    rax = rbx;
    return rax;
}

kcchu

pragma solidity ^0.4.11;


/**
 * @title Ownable
 * @dev The Ownable contract has an owner address, and provides basic authorization control
 * functions, this simplifies the implementation of "user permissions".
 */
contract Ownable {
  address public owner;

kcchu

# Benchmark code: https://github.com/briansmith/crypto-bench
# 2.9 GHz Intel Core i7, Ubuntu 17.04

$ (cd ring && cargo bench); (cd rust_crypto && cargo bench); (cd sodiumoxide && cargo bench)
    Finished release [optimized + debuginfo] target(s) in 0.51 secs
     Running target/release/deps/crypto_bench_ring-c8db2f09335823cf

running 60 tests
test aead::seal_in_place::aes_128_gcm::tls12_1350             ... bench:         411 ns/iter (+/- 2) = 3284 MB/s
test aead::seal_in_place::aes_128_gcm::tls12_16               ... bench:         125 ns/iter (+/- 40) = 128 MB/s

kcchu

Keybase proof

I hereby claim:

• I am kcchu on github.
• I am edwincheese (https://keybase.io/edwincheese) on keybase.
• I have a public key whose fingerprint is 128C AD22 433F 3892 337D B882 7B63 14A0 D221 5DE7

To claim this, I am signing this object:

kcchu

Awesome Pwnable

Meta

• awesome-ctf - A curated list of CTF frameworks, libraries, resources and softwares

Heap Exploitation

• malloc.c - malloc() implementation in glib-2.23 (as found in Ubuntu 16.04.1 LTS)
• how2heap - Awesome collection of various heap exploitation techniques

kcchu

/* Malloc implementation for multiple threads without lock contention.
   Copyright (C) 1996-2016 Free Software Foundation, Inc.
   This file is part of the GNU C Library.
   Contributed by Wolfram Gloger <[email protected]>
   and Doug Lea <[email protected]>, 2001.

   The GNU C Library is free software; you can redistribute it and/or
   modify it under the terms of the GNU Lesser General Public License as
   published by the Free Software Foundation; either version 2.1 of the
   License, or (at your option) any later version.