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Triple Dereference

Time of First Successful Submission: 2026-02-04 03:17:39

Start Here

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Using the Terminal

Time of First Successful Submission: 2026-02-03 22:55:18

Using the VSCode Workspace

Time of First Successful Submission: 2026-02-03 22:58:09

Using the GUI Desktop

Time of First Successful Submission: 2026-02-03 23:00:49

Pasting into the Desktop

Time of First Successful Submission: 2026-02-03 23:02:47

Restarting Challenges

Time of First Successful Submission: 2026-02-03 23:10:46

Challenge Programs

Time of First Successful Submission: 2026-02-03 23:15:42

The Flag File

Time of First Successful Submission: 2026-02-03 23:16:55

Using Privileged Mode

Time of First Successful Submission: 2026-02-03 23:19:07

Persistent Home Directories - One

Time of First Successful Submission: 2026-02-03 23:21:47

Persistent Home Directories - Two

Time of First Successful Submission: 2026-02-03 23:22:25

Computing 101

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Your First Register

Time of First Successful Submission: 2026-02-04 01:25:34

Your First Syscall

Time of First Successful Submission: 2026-02-04 01:28:24

Exit Codes

Time of First Successful Submission: 2026-02-04 01:31:16

Building Executables

Time of First Successful Submission: 2026-02-04 01:44:44

Moving Between Registers

Time of First Successful Submission: 2026-02-04 01:52:01

Loading From Memory

Time of First Successful Submission: 2026-02-04 02:50:09

More Loading Practice

Time of First Successful Submission: 2026-02-04 02:53:08

Dereferencing Pointers

Time of First Successful Submission: 2026-02-04 02:58:50

Dereferencing Yourself

Time of First Successful Submission: 2026-02-04 03:01:18

Dereferencing with Offsets

Time of First Successful Submission: 2026-02-04 03:04:06

Stored Addresses

Time of First Successful Submission: 2026-02-04 03:08:39

Double Dereference

Time of First Successful Submission: 2026-02-04 03:16:22

The Stack

Time of First Successful Submission: 2026-03-04 12:00:03

Stack Offsets

Time of First Successful Submission: 2026-03-04 12:02:18

Program Arguments on the Stack

Time of First Successful Submission: 2026-03-04 12:07:21

Popping From the Stack

Time of First Successful Submission: 2026-03-04 12:20:14

Tracing Syscalls

Time of First Successful Submission: 2026-02-04 02:01:07

Starting GDB

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

Starting Programs in GDB

Time of First Successful Submission: 2026-02-04 02:05:10

Writing Output

Time of First Successful Submission: 2026-02-04 03:40:16

Chaining Syscalls

Time of First Successful Submission: 2026-02-04 13:00:11

Writing Strings

Time of First Successful Submission: 2026-02-04 13:01:26

Reading Data

Time of First Successful Submission: 2026-02-04 13:04:54

set-register

Time of First Successful Submission: 2026-02-04 13:32:24

set-multiple-registers

Time of First Successful Submission: 2026-02-04 13:33:58

add-to-register

Time of First Successful Submission: 2026-02-04 13:36:16

linear-equation-registers

Time of First Successful Submission: 2026-02-04 13:38:57

integer-division

Time of First Successful Submission: 2026-02-04 13:44:07

modulo-operation

Time of First Successful Submission: 2026-02-04 13:46:24

set-upper-byte

Time of First Successful Submission: 2026-02-04 13:48:51

efficient-modulo

Time of First Successful Submission: 2026-02-04 14:00:09

byte-extraction

Time of First Successful Submission: 2026-02-04 14:17:21

bitwise-and

Time of First Successful Submission: 2026-02-04 14:20:31

check-even

Time of First Successful Submission: 2026-02-04 14:25:58

memory-read

Time of First Successful Submission: 2026-02-04 14:35:16

memory-write

Time of First Successful Submission: 2026-02-04 14:36:11

memory-increment

Time of First Successful Submission: 2026-02-04 14:38:48

byte-access

Time of First Successful Submission: 2026-02-04 14:41:08

memory-size-access

Time of First Successful Submission: 2026-02-04 14:50:26

little-endian-write

Time of First Successful Submission: 2026-02-04 15:02:51

memory-sum

Time of First Successful Submission: 2026-02-04 15:18:00

stack-subtraction

Time of First Successful Submission: 2026-02-04 15:20:14

swap-stack-values

Time of First Successful Submission: 2026-02-04 15:21:01

average-stack-values

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

absolute-jump

Time of First Successful Submission: 2026-02-04 15:28:25

relative-jump

Time of First Successful Submission: 2026-02-04 15:45:52

jump-trampoline

Time of First Successful Submission: 2026-02-04 15:54:25

conditional-jump

Time of First Successful Submission: 2026-02-04 16:07:31

indirect-jump

Time of First Successful Submission: 2026-02-04 16:23:58

average-loop

Time of First Successful Submission: 2026-02-04 18:57:31

count-non-zero

Time of First Successful Submission: 2026-02-04 19:10:39

string-lower

Time of First Successful Submission: 2026-02-04 20:47:01

most-common-byte

Time of First Successful Submission: 2026-02-08 02:14:42

Exit

Time of First Successful Submission: 2026-02-09 17:11:24

Socket

Time of First Successful Submission: 2026-02-09 17:29:12

Bind

Time of First Successful Submission: 2026-02-09 18:00:30

Listen

Time of First Successful Submission: 2026-02-09 18:03:17

Accept

Time of First Successful Submission: 2026-02-09 18:08:47

Static Response

Time of First Successful Submission: 2026-02-09 18:53:18

Dynamic Response

Time of First Successful Submission: 2026-02-09 21:14:08

Iterative GET Server

Time of First Successful Submission: 2026-02-10 14:12:34

Concurrent GET Server

Time of First Successful Submission: 2026-02-10 14:24:16

Concurrent POST Server

Time of First Successful Submission: 2026-02-10 15:38:45

Web Server

Time of First Successful Submission: 2026-02-10 15:39:24

Debugging Programs

Time of First Successful Submission: 2026-02-08 15:05:07

Inspecting Registers

Time of First Successful Submission: 2026-02-08 15:07:34

Examining Memory

Time of First Successful Submission: 2026-02-08 15:41:27

Setting Breakpoints

Time of First Successful Submission: 2026-02-08 16:33:56

GDB Scripting

Time of First Successful Submission: 2026-02-08 19:34:14

Modifying Data

Time of First Successful Submission: 2026-02-08 21:52:10

Modifying Execution

Time of First Successful Submission: 2026-02-08 21:54:05

Broken Functions

Time of First Successful Submission: 2026-02-08 23:47:56

GCA CTF

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Using the Terminal

Time of First Successful Submission: 2026-02-03 22:55:18

Using the VSCode Workspace

Time of First Successful Submission: 2026-02-03 22:58:09

Using the GUI Desktop

Time of First Successful Submission: 2026-02-03 23:00:49

Pasting into the Desktop

Time of First Successful Submission: 2026-02-03 23:02:47

Connecting over SSH

Time of First Successful Submission: 2026-02-03 23:07:15

Restarting Challenges

Time of First Successful Submission: 2026-02-03 23:10:46

Getting Help

Time of First Successful Submission: 2026-02-03 23:13:20

Challenge Programs

Time of First Successful Submission: 2026-02-03 23:15:42

The Flag File

Time of First Successful Submission: 2026-02-03 23:16:55

Using Privileged Mode

Time of First Successful Submission: 2026-02-03 23:19:07

Persistent Home Directories - One

Time of First Successful Submission: 2026-02-03 23:21:47

Persistent Home Directories - Two

Time of First Successful Submission: 2026-02-03 23:22:25