ISEGYE IDOL's WriteUp

KIISC Digital Forensics Challenge 2022
The write-up of the top university student team.

🏆 Challenge Overview

Hosted by the Korean Institute of Information Security and Cryptology(KIISC), the Digital Forensics Challenge 2022(DFC 2022) aims to expand our knowledge of digital forensics and to contribute to this field. Now in its fourth year, it plays a significant role in developing new technologies and training forensic experts such as researchers and graduate students in the field of information security. Last year alone, the number of participants recorded a total of 765 people from 500 teams, with 327 Korean and 173 International teams.

⛳️ Description

This challenge consists of 20 problems and they have 100, 200, 300, 400, or 4~5 problems will be released on the 1st of each month, and the deadline for submission is the last day of the month. There is no limit on the number of submissions within the due date, but there is a disadvantage when submitting after the due date.

QUALIFICATION – Anyone interested in Digital Forensics. – Participants can register individually or as a team. – The maximum number of team members is six.

PARTICIPATION – Participants can use any tool (No Limitation) – You can write answer-sheet in English or Korean – Sharing answers or codes is not permitted

🎉 Result

This is the final score and ranking of the top 5 teams. To check the scores of more teams, access the rank page.

Rank	Name	Final Score	Nation
🥇	asserTiVe	3940	Korea (South)
🥈	Please_LTV_99	3635	Korea (South)
🥉	donkey	3630	Korea (South)
4	BirdLab	3350	Korea (South)
4	ISEGYE_IDOL	3350	Korea (South)

⚔️ WriteUp

We do not provide source codes and image files used in challenge, but only write-ups.

🐥 100-points problems

Problems that can be solved using known theories and tools.

No	Problems	Keyword	Score	Main Author
101	Where is his money?	Wallet	100	Sojeong Kim
102	No more ransom	Ransomware	100	Eungchang Lee
103	Reset Your PC	Windows_re	100	Sojeong Kim & Eungchang Lee
104	Find Secret Documents	Anti, Hidden	50	Mingyu Sung & Eungchang Lee
105	Who leaked the secret?	Classification, Brightness	50	Mingyu Seong
106	Is there more than meets the eye?	Dataleak, Photo	100	Sojeong Kim
151	Malicious Service	Malware, Registry	0	All
152	Detect illegal video	Media	150	Sojeong Kim

🦩 200-points problems

Problems that can be solved by analyzing more than 2 artifacts.

No	Problems	Keyword	Score	Main Author
201	Leakage of Confidential Files	Share, Private_number	170	Donghyun HA & Sojeong Kim
202	Forged Contract	Yellow	200	Mingyu Seong & Donghyun HA
203	Code Audit	Smart_contract	200	Donghyun HA
204	SPY's sabotage	Device	200	Mingyu Seong
205	Detecting Object Removal	Sleep, Memory	200	Sojeong Kim

🦉 300-points problems

Problems requiring analysis know-how as they may be time consuming or inaccurate with known tools.

No	Problems	Keyword	Score	Main Author
301	Hidden Message	Bit, Crc32, Color_table	300	Mingyu Seong
302	Find evidences of a conspiracy	Document, Mail	20	All
303	Recovery and Restoration	2D_Code, QR, Dot	300	Mingyu Seong
304	What happened to my PC	Memory, IR	270	All
305	Mission Impossible	Message, Cryptography	250	Donghyun HA

🐉 400-points problems

Problems requiring the development of forensic tool.

No	Problems	Keyword	Score	Main Author
401	Detecting Object Removal	AI_Eraser	340	Donghyun HA & Sojeong Kim
402	Find suspicious files	Anti_forensics, Data_history	250	Eungchang Lee & Sojeong Kim

🚀 500-points problems

The solutions of this problems are not published.

The problems of this score was not given! 🤔

📝 Author

If you want to contact us, please send at this email.

🎙 Challenge Organizer

🎭 Challenge Sponsor

📌 License

This license lets others remix, adapt, and build upon your work non-commercially, as long as they credit you and license their new creations under the identical terms.