is a legacy utility from the mid-2000s used to clone 2G GSM SIM cards by extracting cryptographic keys. The software exploits vulnerabilities in the older COMP128v1 authentication algorithm. This allowed users to back up their SIM cards or combine multiple phone numbers onto a single Multi-SIM chip.
However, the software should be viewed today as a rather than a practical utility. Modern SIM cards are protected by stronger encryption algorithms, and unauthorized attempts to read or clone SIM cards are illegal in most jurisdictions. For security researchers and telecommunications professionals, more modern and legally compliant tools exist.
Even for research purposes, cloning SIM cards typically violates mobile carrier terms of service.
To tailor this historical look at cellular security to your current project, tell me: Woron Scan 1.09
By connecting a PC to a hardware smart card reader (typically operating over older serial COM ports or USB-to-serial emulators), Woron Scan sends precise commands to a SIM card to decrypt and read its underlying profile data. At its peak, Woron Scan was celebrated for being than competing tools like SimScan, making it the preferred software application for mobile enthusiasts. The Technical Core: IMSI and Ki Extraction
The attack relies on sending specifically crafted challenges (RAND) to the SIM and analyzing the resulting SRES. By observing "collisions"—where two different inputs produce the same output (or a specific relationship in the output)—an attacker can infer information about the secret key.
The software was natively coded to talk to legacy COM port (RS-232 serial) smart card readers. The most popular compatible hardware included: is a legacy utility from the mid-2000s used
A highly secret 128-bit cryptographic key assigned by the operator. The Ki is used to authenticate the SIM card on the cellular network during login and to encrypt over-the-air communication.
This public link is valid for 7 days and shares a thread, including any personal information you added. This link or copies made by others cannot be deleted. If you share with third parties, their policies apply. Can’t copy the link right now. Try again later.
: It breaks down the 128-bit key byte-by-byte, significantly shortening the time required to guess the actual Ki. However, the software should be viewed today as
: Modern USIM cards deployed for 3G, 4G LTE, 5G, and eSIM technologies utilize highly secure cryptographic frameworks like the Milenage algorithm, which relies on AES-128 encryption. These cards are structurally immune to the brute-force mathematical tracking methods used by legacy software.
Woron Scan 1.09 excelled at completing the work other tools started.
Woron Scan 1.09: A Lightweight but Outdated Port Scanner You Should Know About
Version 1.09 is often cited as the most stable and widely used "legacy" version of the tool. Its feature set included: