AlpacaHack Logo

Challenges

Sign InSign Up

Rows:

CHALLENGEAUTHORS

SOLVES

(CURRENT)

SOLVE RATE

(AT CONTEST TIME)

AlpacaHack 2100

Daily AlpacaHack

admin

1761

solves

-

1574

solves

-

Daily AlpacaHack

934

solves

-

AlpacaHack Round 2 (Web)

628

solves

Top 28%

= 84/300 users

Daily AlpacaHack

623

solves

-

Daily AlpacaHack

606

solves

-

SECCON Beginners CTF 2024

542

solves

Top 73%

= 683/928 teams

Daily AlpacaHack

409

solves

-

Daily AlpacaHack

406

solves

-

Daily AlpacaHack

375

solves

-

Daily AlpacaHack

367

solves

-

echo

AlpacaHack Round 1 (Pwn)

363

solves

Top 32%

= 56/174 users

Daily AlpacaHack

349

solves

-

Daily AlpacaHack

342

solves

-

Daily AlpacaHack

337

solves

-

Daily AlpacaHack

331

solves

-

Encoding Basics

Daily AlpacaHack

331

solves

-

🐈

Daily AlpacaHack

323

solves

-

Bars

Daily AlpacaHack

318

solves

-

108

Daily AlpacaHack

306

solves

-

Rows:

Tar Uploader

Daily AlpacaHackTopic: File UploadReleased: Mar 30, 2026

105 solves
Web
Medium

by

tchen

tchen

Give it to me in tar.

Beginner Hint: Common pitfalls (AI-translated)
  • Depending on your Python version, you may see behavior that differs from the server. Test with Python 3.13.
  • The nobody user is not allowed to write to most directories and files. Because of that, getting RCE by overwriting executables or dependency files is difficult.
tar-uploader.tar.gz
descriptionsolveswriteups