alvarezp

alienino              3511c0997339cfcccccca39f214322eb22e8fc43
all'equipaggio        14555555ec8dcf1400db9b375c5b8ca836362d8b
Anacyclus             182c40fc4df5b4d997feeeeee22c4dbf059a95d4
bajar                 1352a687f6840df8801aaaaaadf71de84b816f86
bandwagon's           f6e6deb71111110839bc14dd9cbab6eb7b16f09c
barbihecho            bc45de24f03f2a086666668e2a0812a5f270c8cb
calcitrant            86d4ffffff9aae00ace440e93c1d87bb4ec8b56c
cornetti              000000f636f0d7cbc963a62f3a1bc87c9c985a04
crépir                a21303cfa9b7c6f0cccccc19cc59556a188ccac7
cyclosporin's         b5baaaaaa744f480586a905f692cdec2fa0a1919

alvarezp

alvarezp@alvarezp-laptop:~$ export x='() { echo b; }; echo vulnerable'
alvarezp@alvarezp-laptop:~$ bash
vulnerable
alvarezp@alvarezp-laptop:~$ exit
alvarezp@alvarezp-laptop:~$ 

alvarezp

Prepared for the San Diego Kernel Panic Linux User Group.
Presented on November 14th, 2014.
Presenter: Octavio Alvarez

This is my cheat sheet. Uploaded on request of the KPLUG team.

Presentation was a variation of this walkthrough using a
Virtualbox VM with 7 extra disks of 100 MB each (/dev/sdb to
/dev/sdh).

alvarezp

#!/usr/bin/env pinpoint

[#554433]
[shading-opacity=0]

----- [text-align=center]
<b><big><big><big>Alternus</big></big></big></b>


Octavio Alvarez

alvarezp

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

int main(int argc, char **argv) {
    int i, j;

    char *f = "fizz";
    char *b = "buzz";
    char *fb = "fizzbuzz";

alvarezp

int binary_gap_oa1(int N) {
    int c=0;
    int m=0;
    if (N == 0)
        return 1;
    while (N > 1) {
        if (N % 2 == 0) {
            c = c + 1;
            if (c > m)
                m = c;

alvarezp

int mod(int a, int b) {

    if (a == 0)
        return 0;

    if (a > 0 && b > 0) {
        return a % b;
    }
    if (a < 0 && b > 0) {
        return (b - ((-a) % b)) % b;

alvarezp

--- binary-gap-old.c	2016-03-21 15:59:35.872587138 -0700
+++ binary-gap.c	2016-03-21 15:59:40.936787734 -0700
@@ -1,16 +1,17 @@
 int binary_gap(int N) {
     int c=0;
     int m=0;
-    if (N == 0)
-        return 1;
+    while (N > 1 && N % 2 == 0)
+        N = N / 2;

alvarezp

#include <stdio.h>

int main(void) {

    const char *sharks[9] = { "baby", "mommy", "daddy", "grandma",
        "grandpa", "let's go hunt", "run away", "safe at last",
        "it's the end"
    };

    char * is_shark = " shark";

alvarezp

ambos: pthread-args pthread-noargs

pthread-args: pthread-args.c
	gcc -pthread -std=c99 -Wall -Wextra -pedantic -o pthread-args pthread-args.c

pthread-noargs: pthread-noargs.c
	gcc -pthread -std=c99 -Wall -Wextra -pedantic -o pthread-noargs pthread-noargs.c

clean:
    rm -f pthread-args pthread-noargs