Welcome to Cross CTF 2017

Cross CTF 2017 is a cyber security competition by SMU Whitehat Society & NUS Greyhats that will be held in Singapore Management University.

In the competition, student teams from various tertiary institutions will compete to solve challenges. Teams will compete in a 48 hour online qualifiers on the 13th-14th May and the qualifiying teams will compete in Singapore's first 24 hour live attack-defense CTF in the final stage on 17th-18th June.

Are you ready?

Announcements

Announcing the Winners of CrossCTF 2017!

Thank you for attending the CrossCTF finals! We hoped you enjoyed being a part of Singapore's first 24h CTF, because we certainly did! You can check out the pictures we took on the Facebook page below:

Facebook

The final scores for CrossCTF are below:

	Team Name	Affiliation	Score
1.	T0X1C V4P0R	Hwa Chong Institution	3450
2.	OSI Layer 8	NUS High School	2650
3.	ecks dee	Anglo-Chinese School (Independent)	2650
4.	Kopipacket	Singapore University of Technology and Design	1875
5.	ACL	Nanyang Polytechnic	1750
6.	MIJ	Nanyang Polytechnic	1750
7.	Takoyaki	Singapore Polytechnic	1750
8.	0x0ffff5ec	Nanyang Technological University	1550
9.	Feed & AFK	Singapore Polytechnic	1450
10.	Sawadeeka	Nanyang Polytechnic	1450
11.	2x0ffff5ec	Nanyang Technological University	1400
12.	h4x0r	National University of Singapore	1400
13.	m3m32k17	Ngee Ann Polytechnic	750
14.	Team Lost	National University of Singapore	750
15.	From Ngee Ann Polytechnic	Ngee Ann Polytechnic	650
16.	End the Sun	National University of Singapore	650
17.	Delete the Flag	NUS High School	450
18.	Anything	Singapore Polytechnic	350
19.	Pandguin	Singapore Polytechnic	250

Let us congratulate the winners!

1st Place

T0X1C V4P0R from Hwa Chong Institution

Consisting of Velusamy Sathiakumar Ragul Balaji, Ho Jie Feng and Li Bailin

2nd Place

OSI Layer 8 from NUS High School

Consisting of Ambrose Chua, Liu Hanpu and Chandrasekaran Akash

3rd Place

ecks dee from Anglo-Chinese School(Independent)

Consisting of Li Zhong Fu, Winston Yeo and Alvin Mah

CSIT Prize

Sawadeeka from Nanyang Polytechnic

Consisting of Nicholas Yap, Debbie Tan, Justin Chan

Announcement For CrossCTF Villages

NUS Greyhats and SMU Whitehat Society will be organising the CrossCTF villages as part of CrossCTF 2017! This is a workshop series that will be happening on 18th June, Sunday at Singapore Management University and will be completely FREE! Plus, get to mingle with the participants of Singapore’s first 24h Capture-the-Flag competition! Slots are limited, so do sign up now by visiting the link below:

Announcement #1

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Announcement #2

Have a team of 3 already? Sign up for our competition now!

Signups end on 12th May 2017.

Announcement #3

Great job at the qualifiers!

The qualifying score is

40% * 215 = 86 rounded down to 85.

Only teams with a score equal or greater to 85 will be allowed to participate in the final stage. Here are the teams that have qualified for the competition:

Position	Team Name	Affiliation	Score
1.	T0X1C V4P0R	Hwa Chong Institution	215
2.	Kopipacket	Singapore University of Technology and Design	215
3.	TSP	NUS	205
4.	Takoyaki	Singapore Polytechnic	185
5.	Feed & AFK	Singapore Polytechnic	160
6.	ACL	Nanyang Polytechnic	135
7.	Sawadeeka	Nanyang Polytechnic	135
8.	ecks dee	Anglo-Chinese School (Independent)	130
9.	Tic Tac Toe	NUS High School	130
10.	Team Lost	NUS	125
11.	0x0ffff5ec	Nanyang Technological University	125
12.	OSI Layer 8	NUS High School	120
13.	h4x0r	NUS	120
14.	MIJ	Nanyang Polytechnic	115
15.	2x0ffff5ec	Nanyang Technological University	105
16.	From Ngee Ann Polytechnic	Ngee Ann Polytechnic	100
17.	Anything	Singapore Polytechnic	95
18.	418I'mATeaPot	Hwa Chong Institution	95
19.	Pandguin	Singapore Polytechnic	95
20.	m3m32k17	Ngee Ann Polytechnic	85
21.	Delete the Flag	NUS High School	85
22.	End The Sun	National University of Singapore	85

For the above teams, we'll be seeing you at the finals on 17-18 June. More details will be sent via email soon! ;)

For the rest, thank you for taking the time to play, and we hoped you learnt something out of this!

Competition Details

This competition is open to all students from various institutes of higher learning and polytechnics in Singapore. Participants are required to form a team of three to take part in the competition. Each team must achieve a minimum qualifying score in the qualifier round to be allowed to participate in the competition.

Participants are required to bring and utilize their own laptop(s) and equipment(s) for any activity/competition.

Qualifiers Details

The qualifiers for Cross CTF will begin from 13 May 2017 until 14 May 2017, lasting 48 hours in total.

More details will be released through e-mail at a later date.

Rules of Cross CTF

During the CTF

Do not attack the PCs of other competitors.
Do not attack the scoring server.
Do not attack anything outside of the CTF environment.
Do not delete or modify flags.
ARP poisoning or any form of man-in-the-middle attack is prohibited. This action is subject to disqualification.
Sharing flags or solutions is prohibited. This action is subject to disqualification.
Brute-forcing flags will not be tolerated.
Denial of service attacks on any challenge will not be tolerated, unless the challenge calls for such an attack.
If you find any bug in the system, let us know. We might give you some bonus points.
Organizers' decision is final.

Timeline of Event

Date	Event
13/05/2017 0000hrs (Sat)	Start of Qualifiers
14/05/2017 2359hrs (Sun)	Closing of Qualifiers
15/05/2017 (Mon)	Announcement of Qualifiers Result
17/06/2017 (Sat) - 18/06/2017(Sun)	CrossCTF 2017 Finals

Competition Day

Day 1
Time	Programme
1100hrs - 1200hrs	Registration, Distribution of Contest Instructions and Lunch
1200hrs - 1230hrs	Opening Address by Sponsor
1230hrs - 1300hrs	Competition Briefing by GameMaster
1300hrs	Start of Cross CTF Finals
1500hrs	Tea Break
1800hrs	Dinner
2300hrs	Supper
Day 2
0830hrs	Breakfast
1300hrs	End of Cross CTF Finals and Lunch
1600hrs - 1630hrs	Closing Address Sponsors
1630hrs	Prize Presentation by Guest of Honor