CrossCTF is a cyber security competition organized by NTU with collaboration with NUS Greyhats and SMU Whitehats. This also provides a platform for participants to hack safely in Singapore. The other reason is to promote Cyber Security Capture-The-Flag Competitions in Singapore.

Here is a short video which covers on what CTF is:

Rules

• Do not attack other competitors, or their devices.

• Do not attack the scoring server or the network infrastructure

• Do not attack anything outside of the CTF environment.

• Unless explicitly stated, attacking or probing (e.g. port scanning) any other targets is strictly prohibited.

• Do not delete or modify flags.

• You are allowed to use the internet.

• ARP poisoning or any form of man-in-the-middle attack is prohibited (this includes sniffing traffic on wireless network).

• Sharing of flags or discussing solutions is prohibited.

• 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.

Any violation of the rules above will result in disqualification. Organizers’ decision is final.

Penalties

Minor Cases:

Deduction of 1000 points from final team score

Severe Cases:

Disqualification If actions are deemed severe (including but not limited to: damage of property, attacking of sensitive systems), a police report will be made and participants will be prosecuted to the fullest extent of the law.

Warning

21 May 2018

CrossCTF Quals has ended.

18 May 2018

Qualifier will start at 1pm (UTC+08:00) on 19 May 2018 (Saturday). It will end at 1pm on 21 May (Monday) for a total of 48 hours.

17 May 2018

CrossCTF is a competition between schools. It is designed to foster healthy competition between the various educational instutions in Singapore. Traditionally, a Champion’s Trophy has and will continue to be passed to the winning schools of the year.

In the light of the above, we have to make clear the constraint that the members in a team have to be currently in the same school to adequately represent their institution.

This clarification of the rule will affect teams who are recent graduates of their schools and are no longer holding valid matriculation cards. Letters of acceptance/placing for future admittance will no longer be accepted.

15 May 2018

1. we would like to clarify that there will be a minimum number of team members of 1 and maximum number of team members of 3. So anybody who can’t form a team of 3 can still play in the qualifiers and finals.

2. since this is a inter-varsity competition where teams will be representing their schools, we decided to ensure that all teams are only from ONE school. All teams with more than 1 school will contacted individually.

3. after the qualifiers, teams who will be moving on to the final round will have to provide proof of admittance of their respective school. Failure to do so will result in disqualification and the right to move on to the final round will be passed to the next eligible team.

MORE TO COME

The following are the qualifying criteria:

1. Passing the threshold. The threshold is is the median score (1928) out of all the teams
2. Top 2 teams from their respective schools

If the capacity of 20 teams are still not filled, we will include the highest scoring teams out of those eliminated teams until there are 20 teams.

1 additional slot has opened up hence the next highest scoring team was added.

Here are the teams that have qualified for the competition:

To Join Cr055CTF2018

REGISTRATION IS CLOSED

You and/or your team will have to :

-	Form a team of 3 particiapnts

	-	Each team can only have 3 participants
	- 	All participants in the team are to be from a institute 
		of higher learning in Singapore

-	Sign up by **10 May 2018**

-	Go through a compulsory online qualifier.

DISCLAIMER

We will be giving your contacts to the event sponsors if you choose to do so. 
HOWEVER, If you and your team are not comfortable with photography during the finals, 
do drop us a message or indicate during the registration!

The winners will receive cash prizes. Winners will be decided based on final score earned by the end of the competition.

Dates of Competition:

More Details:

CTF Duration : 24 Hrs (2.30pm to 2.30pm)
CrossVillage Track : 5.5 Hrs (9 am to 3.00 pm)
LOCATION : SgInnovate’s BASH @ One-north

Finalists will receive a Goodie Bag, Event T-shirt, Event Lanyards and some additional free stuff!!

Potential Categories with some resources

1. Reverse Engineering
2. Cryptography
3. Miscellaneous
4. Pwnables
5. Web
6. Forensics
7. Mobile