Security assessment report, cover page
We break things to understand them.
- Prepared by
- Zerologon, cyber security cell of Jalpaiguri Government Engineering College
- Active since
- 2022
- Classification
- TLP:CLEAR, public
1.1 Executive summary
Zerologon is a student group of hackers, defenders, and researchers. We run CTFs, workshops, and talks on campus.
1.2 Key figures
- events closed
- 17
- core members
- 11
- at a single CTF
- 350+
1.3 Featured case study
ZL-015Zero Day CTFThe official cybersecurity cell of Jalpaiguri Government Engineering College.
2.1 Advisory: where our name comes from
CVE-2020-1472, the bug we’re named after: about one login attempt in 256 succeeds using nothing but zeros.
- Identifier
- CVE-2020-1472, Zerologon
- Severity
- Critical, CVSS 10.0
- Component
- Windows Netlogon Remote Protocol
- Impact
- Elevation of privilege to domain admin
- Root cause
- AES-CFB8 used with an all-zero IV
- Found by
- Tom Tervoort, Secura
- Patched
- August 2020
2.2 What we do
We run CTFs, workshops, and talks on campus, and our members work on everything from reverse engineering malware to web exploitation.
2.3 Areas in scope
- Capture the flag
- Forensics
- Reverse engineering
- Web exploitation
- Cryptography
- Pwning
- OSINT
- Malware analysis
- Network security
Engagement log
ZL-018, status: open, date to be announced
Slay CTF 2026
Cybersecurity Conference
ZL-01720 Jun 2026
Hack With Jolu
Leads
Aryaneel Das and Sagnik Ghosh
Summary
30+ participants
ZL-01627 Nov 2025
Sristi — JCTF
Summary
30+ participants, ₹7.5k cash prize pool
ZL-01531 Oct 2025
Zero Day CTF
Leads
Amrik Hore and Sharthak Ghosh
Summary
Zerologon’s flagship in-house Capture The Flag event for 2024-25. Open participation drew a strong turnout, with certificates and digital vouchers awarded to winners.
- Participants
- 300+
- Teams
- 30+
- Winners
- 1
- Academic year
- 24-25
ZL-01413 Oct 2025
Intake CTF
Leads
Amrik Hore and Sharthak Ghosh
Summary
40+ participants
ZL-01325 Sep 2025
Slay CTF
Summary
50+ participants, 7 teams. Capture the flag and conference
ZL-012Sep 2025
Intake CTF
Leads
Kaustav Das and Adil Hossain Sana
Summary
350+ participants
ZL-0114 Jan 2025
Student’s Week CTF
Leads
Pankaj Barman
Summary
35 participants
ZL-0102024-25
Sristi — JCTF
Leads
Kaustav Das and Adil Hossain Sana
ZL-0092024-25
Student’s Week CTF
Leads
Kaustav Das and Adil Hossain Sana
ZL-0082024-25
Hack With Jolu
Leads
Kaustav Das and Adil Hossain Sana
ZL-00721 Aug 2024
AI in Cybersecurity
Summary
JECLAT Conference, 70+ attendees
ZL-00617 Feb 2024
Slay CTF
Summary
33 participants, 1 winner. Capture the flag and conference
ZL-0052023-24
Kernal Kombat CTF
Summary
JECLAT, ₹3,300 cash prize pool
ZL-0042023-24
Sristi — JCTF
Leads
Pankaj Barman
ZL-0032023-24
Hack With Jolu
Leads
Pankaj Barman
ZL-0022023-24
Zero Day CTF
Leads
Kaustav Das and Adil Hossain Sana
ZL-00118 Sep 2023
Intake CTF
Leads
Pankaj Barman
Summary
350+ participants
Report team
11 core members
Amrik Hore
OP-01Secretary
ECE’27
Sharthak Ghosh
OP-02Asst. Secretary
EE’27
Sayed Hossain Ansari
OP-03Treasurer
CSE’27
Agniva Shee
OP-04Social Media Lead
EE’27
Tiyasa Patra
OP-05Asst. Social Media Lead
CSE’28
Suranjana Das
OP-06Asst. Social Media Lead
ECE’28
Dharitri Roy
OP-07Outreach & PR Lead
IT’27
Sounak Dey
OP-08Asst. PR Lead
IT’28
Aryaneel Das
OP-09CTF Lead
ECE’28
Sagnik Ghosh
OP-10CTF Lead
CSE’28
Beprodeep Das
OP-11Web Team
ECE’27
Evidence
47 exhibits
Get involved
Come to our next event, or message us to find out how to join.
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