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Whitehat11 RE3

Link: https://wargame.whitehat.vn/Challenges/DetailContest/143 Points: 100 Category: RE Description http://material.wargame.whitehat.vn/contests/11/digital_fortrees.exe flag = SHA1(FirstRoom:SecondRoom:ThridRoom) tl;dr Simple python program packed with py2exe. After recovering python code back from it, turns out all you need to do is factorize 28-digit number made of 3 primes. Solution

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Whitehat11 RE1

Link: https://wargame.whitehat.vn/Challenges/DetailContest/141 Points: 100 Category: RE Description http://material.wargame.whitehat.vn/contests/11/re1_d3309936b177b41dada3796c4c3acadf.zip tl;dr see below Solving the task When executed the program asks for input. It seems that regardless of what is being provided the answer is always “wrong“. Simplified reversed C code for

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CRC

Link: https://backdoor.sdslabs.co/challenges/CRC Author: IamLupo Points: 250 Category: crypto Description Backdoor user IamLupo wanted to submit his challenge for BackdoorCTF16 but he was struck by lightening and his challenge file shattered into 26 pieces. We want you to recover it for

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