Oros42/IMSI-catcher
This program show you IMSI numbers of cellphones around you. observed · 2026-08-28
Health v2 · maintenance only
71/100
- Activity 86
- Release rhythm 35
- Longevity 100
Flags: no_releases
How is this computed?
round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10) — computed 2026-09-03. Adoption (stars, forks) is never an input.
- gap_med: n/a
- age_days: 4109
- days_rel: n/a
- days_push: 88
- n_releases_24m: 0
Adoption not part of the score
4515 stars · 908 forks observed · 2026-08-28
What it is AI-extracted, prompt v1, taxonomy v1, 2026-08-29, confidence not recorded
A Python tool that decodes GSM radio traffic captured via software-defined radio receivers (RTL-SDR, HackRF, BladeRF, OsmocomBB) to display IMSI numbers, country, brand, and operator of nearby cellphones. It is intended for educational purposes to understand how GSM networks work.
Use cases
- detect IMSI catchers or stingrays in my area
- sniff IMSI numbers from nearby cellphones with an RTL-SDR dongle
- learn how GSM networks work hands-on
- monitor GSM traffic on a specific frequency with gr-gsm
- log observed IMSIs to SQLite or MySQL for analysis
- track a specific IMSI during a security research experiment
When to choose
- you have an SDR receiver and a Linux PC and want to observe GSM signaling
- you are studying mobile network security or stingray detection
- you want a simple Python script to decode IMSI/TMSI from gr-gsm output
When to avoid
- you need legal-compliant cellular monitoring or production telecom tooling
- you have no SDR hardware or Linux environment
- you expect support for 4G/5G networks - it only handles GSM
- you intend to use it for unauthorized surveillance
Facets
application · maturity active
security networking parser data-science security networking privacy osint python cli imsi-catcher gsm sdr rtl-sdr hackrf gr-gsm osmocombb radio-monitoring cellular-surveillance security-research telecommunications linux
1 source
- readme: https://github.com/Oros42/IMSI-catcher · fetched 2026-08-28 · b8fe04d6c89a
Member repositories
| Repository | Role | Health v2 |
|---|---|---|
| Oros42/IMSI-catcher | main | 71 |
For agents
markdown · JSON · MCP: product_card(name="Oros42/IMSI-catcher")
Data as of 2026-08-30T08:39:29.467469+00:00 · Report a problem