Navigate to the official homepage. Look for a “Регистрация” (Registration) or “Сабти ном” button. You will typically need:

1. Investigating the URL Parameter If the site has a URL structure like: https://website.tjctf.org/?file=hello.txt or https://website.tjctf.org/?page=about

The server script (likely PHP, Python, or Node) is taking the file parameter and looking for a file with that name.

2. Attempting Traversal Standard Directory Traversal payloads involve using ../ (or ..\\ on Windows) to move up one directory level.

We want to access the "top" file. In CTF context, "top" usually implies the root directory /, or specifically the file /flag.txt, /flag, or /home/flag.txt.

First, let's try to traverse up to the root. We don't know how deep the current directory is, so we use a large number of ../ sequences.

Payload: ../../../../../etc/passwd

If the URL becomes: https://website.tjctf.org/?file=../../../../../etc/passwd

And we see the contents of /etc/passwd (a standard test file for Linux servers), we know the traversal works.

3. Finding the Flag The challenge name "Top File" suggests looking in the top-level directory (root). Common locations for flags in TJCTF web challenges include:

Let's try the most common location: the root directory.

Payload: ../../../../../flag.txt

(Alternatively, if the application appends .txt automatically, you might just need ../../../../../flag).

4. The Working Exploit If the server structure was something like /var/www/html/files/, adding 4 sets of ../ would bring us to /.

URL: https://website.tjctf.org/?file=....//....//....//....//flag.txt

(Note: Sometimes filters block ../, requiring variations like ....// or URL encoding %2e%2e%2f).

However, in the original TJCTF Top File challenge, the intended solution was often simpler. The "top" hint referred to the root directory /.

Successful Request: ?file=../../../flag.txt

Upon visiting this URL, the server reads the file located at /flag.txt and displays it in the browser.

Although the platform is still defining its final feature set, several speculated functionalities have generated buzz within Dushanbe’s IT community:

Given Tajikistan’s linguistic landscape, Topfile.tj is expected to provide user interfaces in Tajik (Cyrillic or Latin) and Russian, with possible English support for international users.

Early reviews from beta testers (via local Telegram channels) praise the interface for its simplicity. However, the big question remains: Reliability?

To compete with established free tiers from Mail.ru Cloud or Yandex Disk—popular in Tajikistan—Topfile.tj will need to offer generous free storage (5-10 GB) and ironclad uptime.

Registering a company in Tajikistan involves numerous documents, including charter documents, tax identification numbers, and VAT registrations. Using Topfile.tj, business owners can store digital copies of these submissions, track deadlines for annual renewals, and share documents securely with accountants or partners.

At its core, Topfile.tj is a file hosting and sharing service based in Tajikistan (indicated by the .tj country code top-level domain). It allows users to upload files to a remote server and generate a shareable link.

Think of it as a local alternative to services like:

Unlike global giants, Topfile.tj focuses on serving users within the post-Soviet space, particularly those in Tajikistan, where local hosting can offer faster download speeds and fewer international bandwidth restrictions.

If Topfile.tj executes its roadmap successfully, it could become the national standard for file sharing within 12–18 months. For now, interested users should monitor the domain closely.

Would you trust a local provider over a global one? Share your thoughts below.

Disclaimer: This article is based on available public data and market analysis as of 2026. Features of Topfile.tj may change upon official launch.