Finally Brainfuck, a THM writeup of BlobBlog

Well it was anno 1998 when an older friend showed me the brainfuck programing language and what I took from this evening was, that such creepy codes are what’s needed for getting into hacking. That made me stay away from really digging into hacking until 20 years later.

+[--->++<]>+.+++[->++++<]>.---.+++++++++.-[->+++++<]>-.++++[->++<]>+.-[->++++<]>.--[->++++<]>-.-[->+++<]>-.--[--->+<]>--.+[---->+<]>+++.[->+++<]>+.-[->+++<]>.-[--->++<]>+.--.-----.[->+++<]>.------------.+[----->+<]>.--[--->+<]>.-[---->+<]>++.++[->+++<]>.++++++++++++.---------.----.+++++++++.----------.--[--->+<]>---.+[---->+<]>+++.[->+++<]>+.+++++++++++++.----------.-[--->+<]>-.++++[->++<]>+.-[->++++<]>.--[->++++<]>-.--------.++++++.---------.--------.-[--->+<]>-.[->+++<]>+.+++++++++++.+++++++++++.-[->+++<]>-.+[--->+<]>+++.------.+[---->+<]>+++.-[--->++<]>+.+++.+.------------.++++++++.-[++>---<]>+.+++++[->+++<]>.-.-[->+++++<]>-.++[-->+++<]>.[--->++<]>--.+++++[->+++<]>.---------.[--->+<]>--.+++++[->+++<]>.++++++.---.[-->+++++<]>+++.+[----->+<]>+.---------.++++.--.+.------.+++++++++++++.+++.+.+[---->+<]>+++.+[->+++<]>+.+++++++++++..+++.+.+[++>---<]>.++[--->++<]>..[->++<]>+.[--->+<]>+.+++++++++++.-[->+++<]>-.+[--->+<]>+++.------.+[---->+<]>+++.-[--->++<]>--.+++++++.++++++.--.++++[->+++<]>.[--->+<]>----.+[---->+<]>+++.[-->+++<]>+.-----.------------.---[->++++<]>.------------.---.+++++++++.-[->+++++<]>-.++[-->+++<]>.-------.------------.---[->++++<]>.------------.---.+++++++++.-[->+++++<]>-.-----[->++<]>-.--[--->++<]>-.

It seems my trauma comes true, being a junior pentester for about a year now, i finally approached a challenge with brainfuck included. lol. Look at this cruelty of a code. I didn’t realize its brainfuck on first sight, but it made me feel an itch of hauntedness in the back of my head.

When I was a kid, my friends and I would always knock on n of our neighbors doors. Always houses n, then n, then n!

base64;brainfuck’ed; n is censored

Dang it Bob, why do you always forget your password?
I’ll encode for you here so nobody else can figure out what it is:
Kjbbfeh378DHns

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Looks like there’s a user Bob with a pw that encoded in some way, while text is probably a hint for it. I thought it had to be shift cipher with being n,n,n the shifts and every n char. but that failed and you can’t bruteforce, since you get banned for pw login after a few failures. brainfuckyou, huh?

++++++++++[>+>+++>+++++++>++++++++++<<<<-]>>>>+++++.<<++.>>—.-..+++++++.<<.>>++++++++.–.—————–.++++++++++++++++++++.——–.————.+++++++++++++++++++.———–.——.–.+++++++++++..+++++++++++++.<<.>>———————–.++++++++++++++++.—————–.++++++++.+++++.——–.+++++++++++++++.——————.++++++++.——.-.

tbc…unfortunately there’s a lot of personal trouble going on in my life right now, so might take a while.

BTW i love dcode.fr <3

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