Author Archives: MrEnigma

Last night, i and my friend played b01lers CTF and got a 1st in VietNam :V, i solved some rev in this ctf. After i finish the most tasks, i think this ctf is for beginner but some tasks i think it so fun, now let’s start !!! Solved: Link Battle Mega RaceThumb ThumbWelcome To GameContinue reading “b01lersCTF bootcamp”

Challenge: NotWannasigh – 100 pts [Reversing] Solution: Find the key from file .pcap – a seed random simple, then you use xor to decrypt the file to get a flag, the flag is gif file 🙂 OK, an ELF 64 bit execuable, nothing special (~.~), start analyze it by IDA: This func told me thatContinue reading “~ WPICTF 2020 ~”

[Reverse Engineering] by DarkEnigma Challenge 1: [basic] reverse engineering (50 pts)Solution: just find a flag in strings window 🙂 flag: utflag{str1ngs_1s_y0ur_fr13nd} Challenge 2: babymips (50 pts)Solution: I using Ghidra to see assembly easier 😉 XOR algorithm to get a flag First i using exeinfoPE to view some information: ~ OK, a 32bit of ELF execuableContinue reading “UTCTF Writeups”

link challenge: http://ctf.batamlinux.com/challenges#Tic%20Tac%20Toe (Reverse Engineering) First i need information of tictactoe so i used exeinfoPE Solution: I found a “big” bug in this file could be shown a flag without playing a minigame :). It’s true ?, YES !!!, a flag contained in function mem(), now I’ll analysis all function in TicTacToe Main()TicTacToe is aContinue reading “Tic Tac Toe – Batamlinux CTF Writeup”

Challenge: CrackOs (Reversing) Đầu tiên, tôi sẽ tiến hành kiểm tra sơ về file crackos.exe: Tiếp theo tôi sẽ dùng IDA để tiến hành phân tích file này và chúng ta sẽ xem nó ở hàm main và tiến hành tìm các ký tự ở strings windows Trong chall này tôi sẽ đưa ra ýContinue reading “NoobTeaM CTF Writeup”