π¨π»
π¨π»
π¨π»
π¨π»
CTFs
Home
Pentesting
Learn
Searchβ¦
π©
Zeyu's CTF Writeups
Home
Pentesting
My Vulnerable Website
My Challenges
SEETF 2022
Cyber League Major 1
STANDCON CTF 2021
2022
BSidesTLV 2022 CTF
Grey Cat The Flag 2022
DEF CON CTF 2022 Qualifiers
Securinets CTF Finals 2022
NahamCon CTF 2022
Securinets CTF Quals 2022
CTF.SG CTF
YaCTF 2022
DiceCTF 2022
TetCTF 2022
2021
hxp CTF 2021
HTX Investigator's Challenge 2021
Metasploit Community CTF
MetaCTF CyberGames
CyberSecurityRumble CTF
The InfoSecurity Challenge (TISC) 2021
SPbCTF's Student CTF Quals
Asian Cyber Security Challenge (ACSC) 2021
Cowsay As A Service
Favorite Emojis
Baby Developer
API
RSA Stream
Filtered
NYONG Coin
CSAW CTF Qualification Round 2021
YauzaCTF 2021
InCTF 2021
UIUCTF 2021
Google CTF 2021
TyphoonCon CTF 2021
DSTA BrainHack CDDC21
BCACTF 2.0
Zh3ro CTF V2
Pwn2Win CTF 2021
NorzhCTF 2021
DawgCTF 2021
UMDCTF 2021
Midnight Sun CTF 2021
picoCTF 2021
DSO-NUS CTF 2021
Powered By
GitBook
NYONG Coin
EnCase forensics
Description
'Kim' is the CEO of a cryptocurrency exchange 'A'.
He asked the management team for the full transaction history of 'NYONG coin' traded in a specific period.
And here is 'Lee', a member of the management team who hates 'Kim', delivered a maliciously manipulated transaction history to 'Kim' in a USB.
Analyze the USB and find one manipulated transaction in there!
Flag Format: ACSC{lowercase(MANIPULATED_TRANSACTION_ID)}
Download Link 1: https://1drv.ms/u/s!At0nZXK3fObIgoQAMtilBAZd017Klg?e=7VKBqz
Download Link 2: https://drive.google.com/file/d/10SfzE59dD88A_TFZTxfAvqoBwsO18dxU
SHA-1: 2E21641DCE2A37959D1010E1637B8FFAEC8CF627
Solution
Using Autopsy, we can see which files were modified.
Afterwards, diff-ing the files gives the modified row.
The flag is
ACSC{8d77a554-dc64-478c-b093-da4493a8534d}
.
Previous
Filtered
Next - 2021
CSAW CTF Qualification Round 2021
Last modified
1mo ago
Copy link
Contents
Description
Solution