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HacktivityCON CTF 2021 - Sharp [Pwn]

Introduction Sharp is the pwn challenge with the fewest solves in Hacktivitycon CTF 2021. We are given a 64-bit binary and a libc shared library. The program is a username manager programmed in C. ...

SunshineCTF 2021 - UselessVM [Reversing]

NOTE: Original post at: http://revpwn.com/Writeups/rev/SunshineCTF-UselessVM/. Problem Description I designed my own virtualized flag storage system a while back. Unfortunately, I think it may hav...

CSAW 2021 - Gotta Decrypt Them All [Crypto]

Gotta Decrypt Them All You are stuck in another dimension while you were riding Solgaleo. You have Rotom-dex with you to contact your friends but he won’t activate the GPS unless you can prove ...

TMUCTF 2021 - Symphony of Loss [Forensic]

Symphony of Loss was one of the forensics challenges in TMU CTF 2021 that only got 3 solves. The challenge description reads: After monitoring our company's network, we found some suspicious traff...

GrabCON CTF 2021 - Paas [Pwn]

Paas was a kernel exploitation challenge during GrabCON CTF 2021 that only got a single solve (our own). We are given a tarball and SSH access to a remote server. The compressed archive contains a ...

FwordCTF 2021 - Containers? [Bash]

Containers? was a bash challenge during FwordCTF 2021 that got 9 solves. We are given an ELF binary, called sealer, and access to a remote server via SSH. If we log to the server we find two files...

FwordCTF 2021 - listening? [Forensic]

listening? was one of the forensics challenges in Fword ctf 2021. The challenge description reads: How Deep Can You Possibly Dig? Flag Format: FwordCTF{....} We are given a pcap file challenge....

FwordCTF 2021 - devprivops [Bash]

Devprivops is a bash challenge from FwordCTF 2021. We are given a ssh access to a machine with just two files in the home directory. The files are called: devops.sh and flag.txt, respectively. Onc...

Imaginary CTF 2021 - String Editor 2 [Pwn]

String Editor 2 is a pwn challenge from ImaginaryCTF 2021. We are given a compiled executable and the target server’s libc. The program is a very simple string editor that allows us to edit a 15 ch...

RaRCTF 2021 - optimizeme [Reversing]

optimize me was a reversing challenge during RaRCTF 2021 that got 16 solves. We are given an ELF binary and the following sentence: rust is fast, but not fast enough. $ file optimizeme optimizeme:...