tr1sk

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Triple Dereference

Time of First Successful Submission: 2025-12-07 16:20:22

Start Here

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Using the Terminal

Time of First Successful Submission: 2025-12-05 10:54:46

Using the VSCode Workspace

Time of First Successful Submission: 2025-12-05 10:54:22

Using the GUI Desktop

Time of First Successful Submission: 2025-12-05 10:52:59

Pasting into the Desktop

Time of First Successful Submission: 2025-12-05 10:52:28

Restarting Challenges

Time of First Successful Submission: 2025-12-05 11:29:58

Challenge Programs

Time of First Successful Submission: 2025-12-05 11:46:53

The Flag File

Time of First Successful Submission: 2025-12-05 11:51:40

Using Privileged Mode

Time of First Successful Submission: 2025-12-05 11:55:50

Persistent Home Directories - One

Time of First Successful Submission: 2025-12-05 12:14:22

Persistent Home Directories - Two

Time of First Successful Submission: 2025-12-05 12:15:22

Computing 101

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Your First Register

Time of First Successful Submission: 2025-12-07 00:42:16

Your First Syscall

Time of First Successful Submission: 2025-12-07 00:48:05

Exit Codes

Time of First Successful Submission: 2025-12-07 00:50:25

Building Executables

Time of First Successful Submission: 2025-12-07 01:16:41

Moving Between Registers

Time of First Successful Submission: 2025-12-07 01:32:19

Loading From Memory

Time of First Successful Submission: 2025-12-07 15:42:46

More Loading Practice

Time of First Successful Submission: 2025-12-07 15:43:57

Dereferencing Pointers

Time of First Successful Submission: 2025-12-07 15:52:41

Dereferencing Yourself

Time of First Successful Submission: 2025-12-07 16:05:47

Dereferencing with Offsets

Time of First Successful Submission: 2025-12-07 16:11:00

Stored Addresses

Time of First Successful Submission: 2025-12-07 16:16:09

Double Dereference

Time of First Successful Submission: 2025-12-07 16:18:48

Tracing Syscalls

Time of First Successful Submission: 2025-12-06 02:25:43

Starting GDB

Time of First Successful Submission: 2025-12-06 02:27:00

Starting Programs in GDB

Time of First Successful Submission: 2025-12-06 02:28:51

Writing Output

Time of First Successful Submission: 2025-12-07 18:58:15

Chaining Syscalls

Time of First Successful Submission: 2025-12-07 19:00:09

Writing Strings

Time of First Successful Submission: 2025-12-07 19:01:18

Reading Data

Time of First Successful Submission: 2025-12-07 20:00:52

set-register

Time of First Successful Submission: 2025-12-08 00:26:30

set-multiple-registers

Time of First Successful Submission: 2025-12-08 00:28:58

add-to-register

Time of First Successful Submission: 2025-12-08 00:30:44

linear-equation-registers

Time of First Successful Submission: 2025-12-08 00:40:19

integer-division

Time of First Successful Submission: 2025-12-08 00:45:38

modulo-operation

Time of First Successful Submission: 2025-12-08 00:52:55

set-upper-byte

Time of First Successful Submission: 2025-12-08 00:58:32

efficient-modulo

Time of First Successful Submission: 2025-12-08 01:19:12

byte-extraction

Time of First Successful Submission: 2025-12-08 01:26:54

bitwise-and

Time of First Successful Submission: 2025-12-08 01:40:45

check-even

Time of First Successful Submission: 2025-12-08 01:45:19

memory-read

Time of First Successful Submission: 2025-12-12 02:55:44

memory-write

Time of First Successful Submission: 2025-12-12 03:00:58

memory-increment

Time of First Successful Submission: 2025-12-12 03:03:55

byte-access

Time of First Successful Submission: 2025-12-12 03:06:47

memory-size-access

Time of First Successful Submission: 2025-12-12 03:11:23

little-endian-write

Time of First Successful Submission: 2025-12-13 15:32:00

memory-sum

Time of First Successful Submission: 2025-12-13 15:54:08

stack-subtraction

Time of First Successful Submission: 2025-12-14 06:13:05

swap-stack-values

Time of First Successful Submission: 2025-12-14 06:16:53

average-stack-values

Time of First Successful Submission: 2025-12-15 01:59:18

absolute-jump

Time of First Successful Submission: 2025-12-15 02:07:07

relative-jump

Time of First Successful Submission: 2025-12-15 03:32:15

jump-trampoline

Time of First Successful Submission: 2025-12-15 03:34:38

conditional-jump

Time of First Successful Submission: 2025-12-15 05:11:17

indirect-jump

Time of First Successful Submission: 2025-12-15 05:37:12

average-loop

Time of First Successful Submission: 2025-12-15 13:07:39

count-non-zero

Time of First Successful Submission: 2025-12-15 13:21:19

string-lower

Time of First Successful Submission: 2025-12-16 03:12:23

Debugging Programs

Time of First Successful Submission: 2026-02-22 08:34:39

Inspecting Registers

Time of First Successful Submission: 2026-02-22 08:38:34

Examining Memory

Time of First Successful Submission: 2026-02-23 02:34:41

Playing With Programs

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cat

Time of First Successful Submission: 2025-12-16 05:39:26

more

Time of First Successful Submission: 2025-12-16 05:40:35

rev

Time of First Successful Submission: 2025-12-16 05:43:10

od

Time of First Successful Submission: 2025-12-16 05:58:42

hd

Time of First Successful Submission: 2025-12-16 05:50:15

xxd

Time of First Successful Submission: 2025-12-16 05:50:44

base32

Time of First Successful Submission: 2025-12-16 05:59:24

base64

Time of First Successful Submission: 2025-12-16 05:59:49

split

Time of First Successful Submission: 2025-12-16 06:02:30

gzip

Time of First Successful Submission: 2025-12-16 06:04:22

env

Time of First Successful Submission: 2025-12-16 06:04:56

find

Time of First Successful Submission: 2025-12-17 03:34:48

make

Time of First Successful Submission: 2025-12-17 03:35:22

nice

Time of First Successful Submission: 2025-12-17 03:35:42

timeout

Time of First Successful Submission: 2025-12-17 03:36:00

stdbuf

Time of First Successful Submission: 2025-12-17 03:36:59

setarch

Time of First Successful Submission: 2025-12-17 03:37:20

watch

Time of First Successful Submission: 2025-12-17 03:40:17

socat

Time of First Successful Submission: 2025-12-17 03:43:54

whiptail

Time of First Successful Submission: 2025-12-17 03:45:09

awk

Time of First Successful Submission: 2025-12-17 03:45:51

sed

Time of First Successful Submission: 2025-12-17 03:46:14

ed

Time of First Successful Submission: 2025-12-17 03:46:32

chown

Time of First Successful Submission: 2025-12-17 03:47:24

chmod

Time of First Successful Submission: 2025-12-17 03:47:47

cp

Time of First Successful Submission: 2025-12-17 03:50:00

mv

Time of First Successful Submission: 2025-12-17 04:21:22

perl

Time of First Successful Submission: 2025-12-17 23:52:20

python

Time of First Successful Submission: 2025-12-17 23:54:49

ruby

Time of First Successful Submission: 2025-12-17 23:56:29

date

Time of First Successful Submission: 2025-12-18 00:09:35

dmesg

Time of First Successful Submission: 2025-12-18 00:10:12

wc

Time of First Successful Submission: 2025-12-18 00:11:33

gcc

Time of First Successful Submission: 2025-12-18 00:17:00

as

Time of First Successful Submission: 2025-12-18 00:18:04

SQL Queries

Time of First Successful Submission: 2025-12-18 03:32:08

Filtering SQL

Time of First Successful Submission: 2025-12-18 03:51:37

Choosing Columns

Time of First Successful Submission: 2025-12-18 03:57:12

GCA CTF

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Using the Terminal

Time of First Successful Submission: 2025-12-05 10:54:46

Using the VSCode Workspace

Time of First Successful Submission: 2025-12-05 10:54:22

Using the GUI Desktop

Time of First Successful Submission: 2025-12-05 10:52:59

Pasting into the Desktop

Time of First Successful Submission: 2025-12-05 10:52:28

Connecting over SSH

Time of First Successful Submission: 2025-12-05 11:26:10

Restarting Challenges

Time of First Successful Submission: 2025-12-05 11:29:58

Getting Help

Time of First Successful Submission: 2025-12-05 11:43:45

Challenge Programs

Time of First Successful Submission: 2025-12-05 11:46:53

The Flag File

Time of First Successful Submission: 2025-12-05 11:51:40

Using Privileged Mode

Time of First Successful Submission: 2025-12-05 11:55:50

Persistent Home Directories - One

Time of First Successful Submission: 2025-12-05 12:14:22

Persistent Home Directories - Two

Time of First Successful Submission: 2025-12-05 12:15:22