Hi, I’m Łukasz

I work in offensive security. Here I share CTF writeups, security notes and small projects.

MODE offensive security FOCUS research and red teaming BASE Lublin / remote
security-notes
$whoami
penetration tester
$focus --list
offensive security / red teaming / research
$status
systems operational

Takeoff

Active machine — write-up published after retirement.

Hack The BoxTakeoffLinuxHardActive · soon
Released October 31, 2026 · 1 min

DutyBound

Active machine — write-up published after retirement.

Hack The BoxDutyBoundLinuxMediumActive · soon
Released October 24, 2026 · 1 min

Odori

Overview Odori is a medium-difficulty Linux machine that blends Windows forensics with Linux privilege escalation. The foothold is not found on the live host at all - an anonymous Samba share points to a BitLocker-encrypted .vmdk disk image that has to be cracked offline, mounted, and mined for Windows secrets. Inside the image, DPAPI-protected credentials for the svc_backup service account are recovered through a chain of standard offline techniques (hive parsing, an offline Administrator password reset, and mimikatz DPAPI decryption). ...

Hack The BoxOdoriLinuxMedium
Released October 15, 2026 · 12 min

Touch

Active machine — write-up published after retirement.

Hack The BoxTouchWindowsEasyActive · soon
Released October 3, 2026 · 1 min

Layover

Active machine — write-up published after retirement.

Hack The BoxLayoverLinuxMediumActive · soon
Released September 26, 2026 · 1 min

Management

Active machine — write-up published after retirement.

Hack The BoxManagementLinuxEasyActive · soon
Released September 12, 2026 · 1 min

Cohort

Active machine — write-up published after retirement.

Hack The BoxCohortLinuxHardActive · soon
Released August 1, 2026 · 1 min

Bedside

Active machine — write-up published after retirement.

Hack The BoxBedsideLinuxMediumActive · soon
Released July 18, 2026 · 1 min

Paperwork

Active machine — write-up published after retirement.

Hack The BoxPaperworkLinuxEasyActive · soon
Released July 11, 2026 · 1 min

MakeSense

Overview Stack: Ubuntu 24, WordPress 7.0, SQLite. 1 2 3 4 5 6 7 8 9 10 11 12 13 reconnaissance v audio file discloses Jake's password (a restricted WP user) v hardcoded client-side AES-GCM key -> stored XSS in the admin panel v XSS creates an administrator account v admin -> Theme File Editor -> PHP webshell -> RCE (www-data) v wp-config.php -> walter's credentials -> SSH -> user.txt v local OCR service (PHP as root) -> write PHP -> RCE as root -> root.txt Reconnaissance 1 2 3 4 nmap -sV -p- 10.10.10.x --min-rate 5000 # open: 22/tcp (SSH), 443/tcp (HTTPS) wpscan --url https://makesense.htb --enumerate u,vp,vt --disable-tls-checks Key wpscan findings: ...

Hack The BoxMakeSenseLinuxMedium
Released July 4, 2026 · 7 min