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#!/usr/bin/env bash
# Copyright (C) 2013 Tom Hendrikx <tom@whyscream.net>. All Rights Reserved.
# This file is licensed under the GPLv2+. Please see COPYING for more information.

export=$1

IFS="   " # tab character
cat "$export" | while read uuid group name login passwd notes; do
     test "$uuid" = "# passwordsafe version 2.0 database" && continue
     test "$uuid" = "uuid" && continue

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#!/bin/sh

set -eu

HOST=$1
PCAP=$2
AWK_CMD='{print "\"IPv4\",\"" $2 "\",\"" substr($4, 1, length($4)-1) "\",\"" $8 "\",\"AES-GCM [RFC4106]\",\"" $19 "\",\"ANY 128 bit authentication [no checking]\",\"\""}'

ssh $HOST "sudo ip -o xfrm state" | awk "$AWK_CMD" >> $HOME/.config/wireshark/esp_sa
tshark -o esp.enable_encryption_decode:TRUE -d udp.port==6784,vxlan -nr $PCAP esp

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diff --git a/src/libbpf.c b/src/libbpf.c
index a97490c..4587950 100644
--- a/src/libbpf.c
+++ b/src/libbpf.c
@@ -4686,10 +4686,13 @@ bpf_object__create_maps(struct bpf_object *obj)
 	char *cp, errmsg[STRERR_BUFSIZE];
 	unsigned int i, j;
 	int err;
+	bool retried;
 

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Intro

Being a cheapass student, I couldn't resist to try to win a free entrance to [Area41 Security Conference][3] (don't mix with Alcoholics Anonymous Area 41 in Nebraska) after spotting @gandro23 retweet about the conference and the challenge.

Level 01

The challenge starts after downloading and extracting a [binary][1]. A quick look

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git svn clone svn://svn.debian.org/svn/pkg-erlang/erlang/trunk debian-erlang
cd debian-erlang; git checkout 72f44f02d383d2858ed7480db7e5bbb662ea48d4
git clone git://github.com/erlang/otp.git
cd otp
git checkout OTP_R15B03
rm -rvf lib/*/doc/{archive,standard}/
ln -s ../debian-erlang/debian
./otp_build autoconf
dpkg-buildpackage -rfakeroot -uc -b

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2019-03-08T19:36:39,224208+0000 tc: vmalloc: allocation failure, allocated 59392000 of 75501568 bytes, mode:0x6090c0(GFP_KERNEL|__GFP_NORETRY|__GFP_ZERO), nodemask=(null),cpuset=b389e318420d891300ad9658f8e056b59972fda9547dd566245a922c34bb9e42,mems_allowed=0
2019-03-08T19:36:39,224215+0000 CPU: 0 PID: 17378 Comm: tc Tainted: G         C OE     5.0.0+ #1
2019-03-08T19:36:39,224216+0000 Hardware name: innotek GmbH VirtualBox/VirtualBox, BIOS VirtualBox 12/01/2006
2019-03-08T19:36:39,224217+0000 Call Trace:
2019-03-08T19:36:39,224233+0000  dump_stack+0x63/0x85
2019-03-08T19:36:39,224240+0000  warn_alloc+0x10b/0x190
2019-03-08T19:36:39,224242+0000  __vmalloc_node_range+0x173/0x270
2019-03-08T19:36:39,224244+0000  __vmalloc_node_flags_caller+0x47/0x50
2019-03-08T19:36:39,224246+0000  ? htab_map_alloc+0x2e4/0x4e0
2019-03-08T19:36:39,224247+0000  bpf_map_area_alloc+0x45/0x50

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MemTotal:        4037048 kB
MemFree:          170752 kB
MemAvailable:    2848280 kB
Buffers:          238708 kB
Cached:          2553912 kB
SwapCached:            0 kB
Active:          1720420 kB
Inactive:        1682980 kB
Active(anon):     612384 kB
Inactive(anon):      844 kB

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diff --git a/drivers/net/Kconfig b/drivers/net/Kconfig
index 0936da592..589d7f3a5 100644
--- a/drivers/net/Kconfig
+++ b/drivers/net/Kconfig
@@ -145,13 +145,15 @@ config MACVTAP
 	  To compile this driver as a module, choose M here: the module
 	  will be called macvtap.
 
+config IPVLAN_L3S
+       depends on NETFILTER

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

static inline unsigned int bpf_num_possible_cpus(void)
{
	static const char *fcpu = "/tmp/foo";
	unsigned int start, end, possible_cpus = 0;
	char buff[128];

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Keybase proof

I hereby claim:

• I am brb on github.
• I am martynasp (https://keybase.io/martynasp) on keybase.
• I have a public key whose fingerprint is 26E3 A522 51B3 4AD1 C2CD E5CB 5385 B938 B74F 0D71

To claim this, I am signing this object: