50m-ctf: CTF Writeup

Hackerone 50m-CTF Writeup By VoidMercy Proof of Completion: c8889970d9fb722066f31e804e351993 Step 1: Twitter Post Image Steganography The 50M Hackerone challenge began with a tweet from @Hacker0x01. At first, I did not expect this tweet to be the start of the challenge, but little did I know, thi...

50m-ctf: CTF write-up: c8889970d9fb722066f31e804e351993

So the CTF starts with this tweet. F434370 The first image is about the 50 million in bounties but the second one looks related to the CTF. The first thing that comes to mind when relating CTFs and images is "steganography". Using the all purpose steg tool zsteg as our first resort, we discover...

50m-ctf: Various vulnerabilities ultimately lead to attacker control over FliteThermostat server and access to internal accounting application source code

Step 1: The Entry Point 3:50 PM PST, Tuesday Afternoon F434398 This image is the entrypoint for the 50m-ctf. It doesn't look like much at first, but one can clearly see that there's a lot of binary digits in the background. The immediate obstacle to trying to decode it is we don't know how many...

Ponce - IDA Plugin For Symbolic Execution Just One-Click Away!

Ponce pronounced 'poN θe pon-they is an IDA Pro plugin that provides users the ability to perform taint analysis and symbolic execution over binaries in an easy and intuitive fashion. With Ponce you are one click away from getting all the power from cutting edge symbolic execution. Entirely writt...

h1-5411-CTF: H1-5411 CTF Writeup

So, Hackerone posted a tweet about the Meme CTF Where barcode was in the tweet image by scanning it and decoding from hex I found this link : https://h1-5411.h1ctf.com/ where we can create/generate a memes and for generating the meme this was used form GitHub which i found in source code analysis...

h1-5411-CTF: CTF Writeup flag{cha1n1ng_bugs_f0r_fun_4nd_pr0f1t?_or_rep0rt_an_LF1}

We have attached the writeup, the CTF was solved by me and Chapuka. We would like to publish our writeup for the CTF in our blog, when can we do that? It was a great CTF, it's a shame we are not @Buenos Aires right now :/ Impact...

h1-5411-CTF: h1-5411-CTF report: LFI / Deserialization / XXE vulnerability,

NOTE! Thanks for submitting a report! Please replace all the square sections below with the pertinent details. Remember, the more detail you provide, the easier it is for us to triage and respond quickly, so be sure to take your time filling out the report! Summary: h1-5411-ctf write-up The CTF...

h1-5411-CTF: Solution for h15411's CTF challenge

Baby steps Earlier today a friend tipped me off about an ongoing CTF challenge that was being run by HackerOne and would get the first ten winners a ticket to participate in h15411, which will be a live-hacking event happening in Buenos Aires. This immediately caught my attention and I decided to...

h1-5411-CTF: H1-5411 CTF Write-up by erbbysam and ziot

@erbbysam and I recently set out to beat the latest CTF challenge hosted by HackerOne. Here is a write-up with the process we took from start to finish. The h1-5411 CTF begins with a tweet from HackerOne: https://twitter.com/Hacker0x01/status/1044974142150373378 F351665 This leads to a website...

h1-5411-CTF: flag{cha1n1ng_bugs_f0r_fun_4nd_pr0f1t?_or_rep0rt_an_LF1}

Got the flag: flagcha1n1ngbugsf0rfun4ndpr0f1t?orrep0rtanLF1 Will submit the writeup as soon as I finalize it. Impact -...

Offensive and Defensive Cryptography: Crypton

Crypton is an educational library to learn and practice Offensive and Defensive Cryptography. It is basically a collection of explanation and implementation of all the existing vulnerabilities and attacks on various Encryption Systems Symmetric and Asymmetric, Digital Signatures, Message...

Announcing the Fifth Annual Flare-On Challenge

The FireEye Labs Advanced Reverse Engineering FLARE team’s annual reverse engineering challenge will start at 8:00 p.m. ET on Aug. 24, 2018. This is a CTF-style challenge for all active and aspiring reverse engineers, malware analysts, and security professionals. So dust off your disassembler, pu...

Crypto Identifier - Tool To Uncipher Data Using Multiple Algorithms And Block Chaining Modes

Crypto tool for pentest and ctf : try to uncipher data using multiple algorithms and block chaining modes. Usefull for a quick check on unknown cipher text and key dictionary. Supported Algorithms : AES ARC2 ARC4 Blowfish CAST DES DES3 XOR Supported modes : ECB CBC CFB OFB Usage: python...

PHDays8: Digital Bet and thousands tons of verbal ore

It's time to write about Positive Hack Days 8: Digital Bet conference, which was held May 15-16 at the Moscow World Trade Center. It was the main Russian Information Security event of the first half of 2018. More than 4 thousand people attended! More than 50 reports, master classes and round tabl...

Adhrit - Android APK Reversing And Analysis Tool That Can Help Secuity Researchers And CTF Enthusiasts Alike

Adhrit is an open source Android APK reversing and analysis tool that can help security researchers and CTF enthusiasts alike. The tool is an effort to cut down on the amount of time spent on reversing and basic reconnaissance of Android applications. The project is still under progress and will...

DLINK DCS-5020L - Remote Code Execution (PoC)

DLINK DCS-5020L - Remote Code Execution PoC “The DCS-5020L Wireless N Day & Night Pan/Tilt Cloud Camera is a day/night network camera that easily connects to your existing home network for remote viewing on a range of mobile devices. It features pan, tilt and digital zoom function to allow you to...

Intentionally Insecure Webapp for Security Training: OWASP Juice Shop

OWASP Juice Shop is an intentionally insecure webapp for security trainings written entirely in JavaScript which encompasses the entire OWASP Top Ten and other severe security flaws. Juice Shop is written in Node.js, Express and AngularJS. It was the first application written entirely in JavaScri...

PWN_learning

This repository is an exploit for a stack smash vulnerability in a CTF challenge called "Smashes". The exploit is written in Python and uses the pwntools library. The vulnerability is caused by a buffer overflow in the stackchkfail function, which is called when a stack buffer overflow is detecte...

Trend Micro Capture the Flag: Train security professionals – Close the skills gap

Businesses today face a security challenge: Protecting their systems and data is vital, but there aren’t enough qualified employees who can successfully make that happen. Similarly, young cybersecurity professionals need to overcome the gap between what is learned in a classroom and the practical...

Described in the CTF game found Python deserialization BUG vulnerability flaws-vulnerability warning-the black bar safety net

In the first few days, I had the privilege to join the ToorConCTF（https://twitter.com/toorconctf in addition this event the process of my first time in Python in the invention the sequence of the flaws. In our competition process, there are two provocative touch to be able to perhaps receive the...