Stack Chicanery

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Intro to Cybersecurity

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level1

Time of First Successful Submission: 2026-01-01 15:45:05

level2

Time of First Successful Submission: 2026-01-01 15:46:39

level3

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level4

Time of First Successful Submission: 2026-01-01 15:48:03

level5

Time of First Successful Submission: 2026-01-01 17:20:21

level6

Time of First Successful Submission: 2026-01-01 17:31:25

level7

Time of First Successful Submission: 2026-01-01 17:34:01

level8

Time of First Successful Submission: 2026-01-01 17:34:38

level9

Time of First Successful Submission: 2026-01-01 17:35:15

level10

Time of First Successful Submission: 2026-01-01 17:41:22

level11

Time of First Successful Submission: 2026-01-01 17:59:50

level12

Time of First Successful Submission: 2026-01-01 18:05:36

level13

Time of First Successful Submission: 2026-01-01 23:59:11

level14

Time of First Successful Submission: 2026-01-02 00:00:08

level15

Time of First Successful Submission: 2026-01-02 00:00:40

level16

Time of First Successful Submission: 2026-01-02 00:09:30

level17

Time of First Successful Submission: 2026-01-02 01:14:33

level18

Time of First Successful Submission: 2026-01-02 01:15:21

level19

Time of First Successful Submission: 2026-01-02 01:41:13

Your First Overflow (easy)

Time of First Successful Submission: 2025-11-14 20:20:48

Your First Overflow (hard)

Time of First Successful Submission: 2025-11-29 12:39:42

Precision (easy)

Time of First Successful Submission: 2026-03-13 03:08:49

Precision (hard)

Time of First Successful Submission: 2026-03-13 03:16:37

Variable Control (easy)

Time of First Successful Submission: 2026-03-13 15:31:51

Variable Control (hard)

Time of First Successful Submission: 2026-03-13 16:14:23

Control Hijack (easy)

Time of First Successful Submission: 2026-03-13 17:17:03


Start Here

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Using the Terminal

Time of First Successful Submission: 2025-11-14 14:29:19

Using the VSCode Workspace

Time of First Successful Submission: 2025-11-14 14:56:14

Using the GUI Desktop

Time of First Successful Submission: 2025-11-14 14:58:04

Pasting into the Desktop

Time of First Successful Submission: 2025-11-14 14:59:31

Restarting Challenges

Time of First Successful Submission: 2025-11-14 15:01:08

Challenge Programs

Time of First Successful Submission: 2025-11-14 15:02:08

The Flag File

Time of First Successful Submission: 2025-11-14 15:03:14

Using Privileged Mode

Time of First Successful Submission: 2025-11-14 15:06:03

Persistent Home Directories - One

Time of First Successful Submission: 2025-11-14 15:08:54

Persistent Home Directories - Two

Time of First Successful Submission: 2025-11-14 15:09:13


Linux Luminarium

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The PATH Variable

Time of First Successful Submission: 2025-11-21 22:48:23

Setting PATH

Time of First Successful Submission: 2026-01-01 11:41:14

Finding Commands

Time of First Successful Submission: 2026-01-01 11:43:49

Adding Commands

Time of First Successful Submission: 2026-01-01 12:12:54

Hijacking Commands

Time of First Successful Submission: 2026-01-01 12:17:48


Playing With Programs

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What's the password?

Time of First Successful Submission: 2026-02-20 14:02:59

... and again!

Time of First Successful Submission: 2026-02-20 14:04:13

Newline Troubles

Time of First Successful Submission: 2026-02-20 14:05:37

Reasoning about files

Time of First Successful Submission: 2026-02-20 14:10:25

Specifying Filenames

Time of First Successful Submission: 2026-02-20 14:14:01

Binary and Hex Encoding

Time of First Successful Submission: 2026-02-20 16:11:14

More Hex

Time of First Successful Submission: 2026-02-20 16:17:10

Decoding Hex

Time of First Successful Submission: 2026-02-20 17:05:27

Decoding Practice

Time of First Successful Submission: 2026-02-20 17:27:26

Encoding Practice

Time of First Successful Submission: 2026-02-20 17:33:35

Hex-encoding ASCII

Time of First Successful Submission: 2026-02-20 20:07:26

Nested Encoding

Time of First Successful Submission: 2026-02-20 20:13:20

Hex-encoding UTF-8

Time of First Successful Submission: 2026-02-20 20:20:59

UTF Mixups

Time of First Successful Submission: 2026-02-20 20:29:28

Modifying Encoded Data

Time of First Successful Submission: 2026-02-20 20:45:09

Decoding Base64

Time of First Successful Submission: 2026-02-20 21:19:34

Encoding Base64

Time of First Successful Submission: 2026-02-20 21:35:46

Dealing with Obfuscation

Time of First Successful Submission: 2026-02-20 21:42:22

Dealing with Obfuscation 2

Time of First Successful Submission: 2026-02-20 21:46:20

Your First HTTP Request

Time of First Successful Submission: 2026-02-24 21:08:52

Reading Flask

Time of First Successful Submission: 2026-02-24 21:19:48

Commented Data

Time of First Successful Submission: 2026-02-24 21:40:19

HTTP Metadata

Time of First Successful Submission: 2026-02-24 21:46:55

HTTP (netcat)

Time of First Successful Submission: 2026-02-25 12:59:18

HTTP Paths (netcat)

Time of First Successful Submission: 2026-02-25 13:14:08

HTTP (curl)

Time of First Successful Submission: 2026-02-25 13:39:36

HTTP (python)

Time of First Successful Submission: 2026-02-25 13:44:13

HTTP Host Header (python)

Time of First Successful Submission: 2026-02-25 14:51:50

HTTP Host Header (curl)

Time of First Successful Submission: 2026-02-25 14:56:27

HTTP Host Header (netcat)

Time of First Successful Submission: 2026-02-25 15:05:16

URL Encoding (netcat)

Time of First Successful Submission: 2026-02-25 15:10:26

HTTP GET Parameters

Time of First Successful Submission: 2026-02-25 15:17:26

Multiple HTTP Parameters (netcat)

Time of First Successful Submission: 2026-02-25 15:19:11

Multiple HTTP Parameters (curl)

Time of First Successful Submission: 2026-02-25 15:22:28

HTTP Forms

Time of First Successful Submission: 2026-02-25 15:27:27

HTTP Forms (curl)

Time of First Successful Submission: 2026-02-25 15:32:04

HTTP Forms (netcat)

Time of First Successful Submission: 2026-02-25 15:38:01

HTTP Forms (python)

Time of First Successful Submission: 2026-02-25 15:40:49

HTTP Forms Without Forms

Time of First Successful Submission: 2026-02-25 15:52:39

Multiple Form Fields (curl)

Time of First Successful Submission: 2026-02-25 16:02:04

Multiple Form Fields (netcat)

Time of First Successful Submission: 2026-02-25 16:09:58

HTTP Redirects (netcat)

Time of First Successful Submission: 2026-02-25 19:44:37

HTTP Redirects (curl)

Time of First Successful Submission: 2026-02-25 19:46:55

HTTP Redirects (python)

Time of First Successful Submission: 2026-02-25 19:48:04

HTTP Cookies (curl)

Time of First Successful Submission: 2026-02-25 20:20:29

HTTP Cookies (netcat)

Time of First Successful Submission: 2026-02-25 20:22:15

HTTP Cookies (python)

Time of First Successful Submission: 2026-02-25 20:32:52

Server State (python)

Time of First Successful Submission: 2026-02-25 20:33:26

Listening Web

Time of First Successful Submission: 2026-02-25 20:37:16

Speaking Redirects

Time of First Successful Submission: 2026-02-25 21:27:55

JavaScript Redirects

Time of First Successful Submission: 2026-03-02 16:23:00

Including JavaScript

Time of First Successful Submission: 2026-03-02 17:51:40

HTTP (javascript)

Time of First Successful Submission: 2026-03-02 18:29:59

HTTP Get Parameters (javascript)

Time of First Successful Submission: 2026-03-02 18:35:35

HTTP Forms (javascript)

Time of First Successful Submission: 2026-03-02 18:56:07

cat

Time of First Successful Submission: 2026-03-03 23:20:54

more

Time of First Successful Submission: 2026-03-03 23:22:02

less

Time of First Successful Submission: 2026-03-03 23:22:31

tail

Time of First Successful Submission: 2026-03-03 23:23:16

head

Time of First Successful Submission: 2026-03-03 23:30:06

sort

Time of First Successful Submission: 2026-03-03 23:30:22

vim

Time of First Successful Submission: 2026-03-03 23:30:41

emacs

Time of First Successful Submission: 2026-03-03 23:31:16

nano

Time of First Successful Submission: 2026-03-03 23:31:39

rev

Time of First Successful Submission: 2026-03-03 23:32:05

od

Time of First Successful Submission: 2026-03-03 23:40:28

hd

Time of First Successful Submission: 2026-03-03 23:50:36

xxd

Time of First Successful Submission: 2026-03-03 23:53:28

base32

Time of First Successful Submission: 2026-03-03 23:54:42

base64

Time of First Successful Submission: 2026-03-03 23:59:38

split

Time of First Successful Submission: 2026-03-04 00:01:23

gzip

Time of First Successful Submission: 2026-03-04 00:08:34

bzip2

Time of First Successful Submission: 2026-03-04 00:09:19

zip

Time of First Successful Submission: 2026-03-04 00:15:25

tar

Time of First Successful Submission: 2026-03-04 00:58:17

ar

Time of First Successful Submission: 2026-03-04 01:05:17

cpio

Time of First Successful Submission: 2026-03-04 01:07:39

genisoimage

Time of First Successful Submission: 2026-03-04 01:16:59

env

Time of First Successful Submission: 2026-03-04 01:22:51

find

Time of First Successful Submission: 2026-03-04 01:29:32

make

Time of First Successful Submission: 2026-03-04 01:30:28

nice

Time of First Successful Submission: 2026-03-04 01:31:17

timeout

Time of First Successful Submission: 2026-03-04 01:31:52

stdbuf

Time of First Successful Submission: 2026-03-04 01:34:25

setarch

Time of First Successful Submission: 2026-03-04 01:36:57

watch

Time of First Successful Submission: 2026-03-04 01:41:58

socat

Time of First Successful Submission: 2026-03-04 01:44:33

whiptail

Time of First Successful Submission: 2026-03-04 01:47:26

awk

Time of First Successful Submission: 2026-03-04 01:48:16

sed

Time of First Successful Submission: 2026-03-04 01:50:01

ed

Time of First Successful Submission: 2026-03-04 01:52:24

chown

Time of First Successful Submission: 2026-03-04 01:52:54

chmod

Time of First Successful Submission: 2026-03-04 01:53:16

cp

Time of First Successful Submission: 2026-03-04 01:58:18

mv

Time of First Successful Submission: 2026-03-04 15:07:48

perl

Time of First Successful Submission: 2026-03-04 02:35:46

python

Time of First Successful Submission: 2026-03-04 02:34:37

ruby

Time of First Successful Submission: 2026-03-04 02:37:40

bash

Time of First Successful Submission: 2026-03-04 15:14:25

date

Time of First Successful Submission: 2026-03-04 15:16:05

dmesg

Time of First Successful Submission: 2026-03-04 15:19:16

wc

Time of First Successful Submission: 2026-03-04 15:23:15

gcc

Time of First Successful Submission: 2026-03-04 15:40:26

as

Time of First Successful Submission: 2026-03-04 15:41:11

wget

Time of First Successful Submission: 2026-03-04 22:21:48

ssh-keygen

Time of First Successful Submission: 2026-03-04 20:25:33

SQL Queries

Time of First Successful Submission: 2026-03-04 22:42:26

Filtering SQL

Time of First Successful Submission: 2026-03-04 22:56:54

Choosing Columns

Time of First Successful Submission: 2026-03-04 23:05:08

Exclusionary Filtering

Time of First Successful Submission: 2026-03-04 23:09:19

Filtering Strings

Time of First Successful Submission: 2026-03-04 23:10:41

Filtering on Expressions

Time of First Successful Submission: 2026-03-04 23:16:50

SELECTing Expressions

Time of First Successful Submission: 2026-03-04 23:33:40

Composite Conditions

Time of First Successful Submission: 2026-03-04 23:36:16

Reaching Your LIMITs

Time of First Successful Submission: 2026-03-04 23:41:59

Querying Metadata

Time of First Successful Submission: 2026-03-04 23:45:25


GCA CTF

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Using the Terminal

Time of First Successful Submission: 2025-11-14 14:29:19

Using the VSCode Workspace

Time of First Successful Submission: 2025-11-14 14:56:14

Using the GUI Desktop

Time of First Successful Submission: 2025-11-14 14:58:04

Pasting into the Desktop

Time of First Successful Submission: 2025-11-14 14:59:31

Connecting over SSH

Time of First Successful Submission: 2025-11-14 14:43:52

Restarting Challenges

Time of First Successful Submission: 2025-11-14 15:01:08

Challenge Programs

Time of First Successful Submission: 2025-11-14 15:02:08

The Flag File

Time of First Successful Submission: 2025-11-14 15:03:14

Using Privileged Mode

Time of First Successful Submission: 2025-11-14 15:06:03

Persistent Home Directories - One

Time of First Successful Submission: 2025-11-14 15:08:54

Persistent Home Directories - Two

Time of First Successful Submission: 2025-11-14 15:09:13