C0deH4cker

#include <stdlib.h>

/*! Frees the pointer pointed to by the parameter and then sets it to NULL */
#define destroy(pptr) do { \
	__typeof__(*(pptr)) volatile* _pptr = (pptr); \
	if(!_pptr) { \
		break; \
	} \
	free(*_pptr); \
	*_pptr = NULL; \

C0deH4cker

Keybase proof

I hereby claim:

• I am c0deh4cker on github.
• I am c0deh4cker (https://keybase.io/c0deh4cker) on keybase.
• I have a public key ASDAYDYtqJGjVHyfmEJDXA3gw4geCBLvgpynNHx7M2t1Wgo

To claim this, I am signing this object:

C0deH4cker

//
//  main.c
//  macho-syms
//
//  Created by C0deH4cker on 3/19/16.
//  Copyright © 2016 C0deH4cker. All rights reserved.
//

#include <stdio.h>
#include <stdlib.h>

C0deH4cker

#include <stdio.h>

// Even making the pointer volatile doesn't help
__thread int* tl_ptr;

int main(void) {
	int x = 0xDEAD;
	
	// Put a breakpoint on the following line
	tl_ptr = &x;

C0deH4cker

// Part 1
extension UInt {
    public init(bytes: Bytes) {
        self = 0
        for byte in bytes {
            self <<= 8
            self |= UInt(byte)
        }
    }
}

C0deH4cker

/* THIS IS VERY BAD */

#define CONCAT(a, b) CONCAT_(a, b)
#define CONCAT_(a, b) a##b

#define THIS_IS_BAD(test, first, rest, cond, body...) THIS_IS_BAD_2(__COUNTER__, test, first, rest, cond, ##body)
#define THIS_IS_BAD_2(uniq, test, first, rest, cond, body...) THIS_IS_BAD_3(CONCAT(this_is_bad_, uniq), test, first, rest, cond, ##body)
#define THIS_IS_BAD_3(label, test, first, rest, cond, body...) do { \
	if(test) { \
		first(); \

C0deH4cker

#!/usr/bin/env python
from pwn import *
import sys

debug_server = False
use_system_libc = True
r = remote("pwn.chal.csaw.io", 8003); use_system_libc = False
# r = process("./hungman")
# r = process("./linux_serverx64"); debug_server = True