RE101 | CyberDefenders ® | Blue Team CTF Challenges

RE101

SHA1SUM	b5b738f3436ae075a56d0adeed54715ecf2efecb
Published	Oct. 7, 2020
Author	DFA
Size	8K
Tags	Reverse Engineering Deobfuscation JavaScript MISC ZIP

Instructions	Uncompress the challenge (pass: cyberdefenders.org)

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Your progress

0% Completed0/6 Questions

Your score

0/1475

Category

Reversing

Last solve

1 day ago by MMOX

Challenge Questions
Challenge Details

RE101 challenge is a binary analysis exercise - a task security analysts do to understand how a specific malware works and extract possible intel.

Tools:

#	Question	Weight	Solved
#1	File: MALWARE000 - I've used this new encryption I heard about online for my warez; I bet you can't extract the flag!	100	74
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#2	File: Just some JS - Check out what I can do!	100	71
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#3	File: This is not JS - I'm tired of Javascript. Luckily, I found the grand-daddy of that lame last language!	150	65
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#4	File: Unzip Me - I zipped flag.txt and encrypted it with the password "password", but I think the header got messed up... You can have the flag if you fix the file	175	45
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#5	File: MALWARE101 - Apparently, my encryption isn't so secure. I've got a new way of hiding my flags!	400	43
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#6	File: MALWARE201 - Ugh... I guess I'll just roll my own encryption. I'm not too good at math, but it looks good to me!	550	31
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