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[ASIS CTF Finals 2018] Silver Bullet Write-up (Pwn121)

You’ve got one silver bullet, pull the triggle carefully! nc 37.139.17.37 7331 Let’s check the file information first.

The file is an ELF 32-bit LSB executable. Let’s look at its protections.

Its stack is not executable. Let’s decompile… Continue Reading →

[TUCTF 2018] Lisa Write-up (Pwn489)

Ayo, Johhny’s got your take from the job. Go meet up with em’ to claim your share. Oh, and stop asking to see the Mona Lisa alright. It’s embarrassing nc 18.191.244.121 12345 lisa Let’s check the file information first.

Continue Reading →

[Kaspersky Industrial CTF 2018] Doubles Write-up (Pwn635)

nc doubles.2018.ctf.kaspersky.com 10001 doubles Let’s start with looking at file information and protections.

The file is an 64-bit executable that is dynamically linked and its stack is not executable. Let’s disassemble its main function.

It simply calls a… Continue Reading →

[P.W.N. CTF 2018] Important Service Write-up (Pwn259)

Very Important Service. Flag in /opt. nc importantservice.uni.hctf.fun 13375 a30577b33492f15d382ef665ee6abda2.tar.xz a30577b33492f15d382ef665ee6abda2.tar.xz MIRROR Let’s look at the file information first.

It is a 64-bit ELF pie executable which is dynamically linked and not stripped. Let’s check its protections.

The… Continue Reading →

[P.W.N. CTF 2018] Kindergarten PWN Write-up (Pwn204)

Thats still kindergarten stuff. Flag in /opt. nc kindergarten.uni.hctf.fun 13373 48800cb1ffbd78f067d68425baa25d88.tar.xz  48800cb1ffbd78f067d68425baa25d88.tar.xz MIRROR Let’s start with looking at the file information.

It is a 64-bit ELF executable which is dynamically linked and not stripped. Let’s take a look at… Continue Reading →

[P.W.N. CTF 2018] BabyPWN Write-up (Pwn115)

This is the babypwn challenge – what are you waiting for student? nc baby.uni.hctf.fun 25251 Binary Libc Binary Mirror Libc Mirror Let’s check the file information first.

It is an 64-bit ELF executable which is dynamically linked and not… Continue Reading →

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