EnSec blog

asm-some

Wed 07 February 2024 reversing asm / misc

Short google brainteaser

Werbe videoblocker

Sat 28 August 2021 misc js

uBlock copy with added tracking

ACE labs puzzle

Sat 21 August 2021 ctf assembly

ACE labs assembly puzzle

SHA 2017 Title case

Sat 17 April 2021 ctf python

SHA 2017 Title Case solution

Automated Reasoning: satisfiability

Sun 21 February 2021 misc z3

Automated Reasoning z3 exercise solution

Drow ELF patcher

Tue 12 May 2020 misc elf / c / linux

Utility for patching ELF files post-build

W3challs striptease

Sun 16 February 2020 reversing crackme / elf

Solution to W3challs striptease challenge

XML exploits

Sun 26 January 2020 misc xml / exploitation / XXE / java

How to exploit XML service

Hollow Knight cheat

Tue 21 January 2020 misc cheat engine / reversing

Creating cheat for the Hollow Knight

GoatCounter

Fri 17 January 2020 misc js / statistics

Adding statistics to the blog

Opensubtitles addon

Sun 05 January 2020 misc javascript / browser

Exploring opensubtitles browser addon

ELF prepender

Thu 02 January 2020 misc rust / elf / linux

Simple rust ELF prepender

Windows persistance DuplicateHandle

Sun 08 December 2019 tutorial windows

How to use DuplicateHandle to achieve persistence on Windows

Malwaretech VM 1 reversing challenge

Wed 27 November 2019 reversing crackme / vm

Solution to Malwaretech VM 1 challenge

Crackmes one 7eRoM's 1st one challenge

Sat 16 November 2019 reversing crackme / windows / radare2 / unicorn

Solutions to 7eRoM's 1st challenge crackme

Crackmes one Mexican

Sat 09 November 2019 reversing reversing / crackme / windows / radare2

Solutions to Mexican crackme

247 CTF part 1

Sat 09 November 2019 ctf reversing / z3 / misc

Solutions to some of 247ctf challenges

Chrome password extractor

Sat 31 August 2019 misc rust / misc / chrome

How to extract passwords from chrome

Ascii art && fractals

Mon 24 June 2019 misc algorithm

Making interesting images in Python

Pdqsort

Wed 22 May 2019 misc sorting / algorithm

Quick intro to pdqsort

Timsort

Sat 18 May 2019 misc sorting / algorithm

Quick intro to timsort

Spectre V1

Sun 21 April 2019 tutorial spectre / cache

How spectre V1 works

IAT hooking

Wed 17 April 2019 tutorial windows / dll / IAT / hook

How to do simple IAT hook

Implicit dll linking

Sun 14 April 2019 tutorial windows / dll / lib

How to implicitly link dll

MOBISEC CTF reversing 6-7

Tue 09 April 2019 ctf android / reversing / java / dex / apk

How to solve MOBISEC CTF reversing challenges 6-7

MOBISEC CTF reversing 1-5

Wed 03 April 2019 ctf android / reversing / java / dex / apk

How to solve MOBISEC CTF reversing challenges 1-5

Ghost dll injections

Sat 30 March 2019 tutorial windows / binary exploitation

Example of simple dll injection

UTCTF 2019 Super Secure Authentication

Tue 19 March 2019 ctf ctf / reversing / java

How to solve UTCTF 2019 Super Secure Authentication reversing challenge

Pragyan CTF 2019 Super Secure Vault

Tue 12 March 2019 ctf ctf / reversing

How to solve Pragyan CTF 2019 Super Secure Vault reversing challenge

Blockchain CTF Lvl. 12-13

Mon 11 March 2019 ctf ctf / ethereum / solidity

How to solve Blockchain CTF lvl. 12-13

Using MutationObserver and MediaQuery

Wed 06 March 2019 misc js / MutationObserver / MediaQuery

How to use MutationObserver and MediaQuery to dynamically handle changes on page

Ret2 systems wargame

Fri 25 January 2019 ctf ctf / reversing / assembly

How to solve Ret2systems the heist

Etherhacker wargame Lvl. 1-4

Mon 14 January 2019 ctf ctf / ethereum / solidity

How to solve Etherhacker wargame lvl 1-4

Ethernaut wargame Lvl. 19

Sun 13 January 2019 ctf ctf / ethereum / solidity

How to solve Ethernaut wargame lvl. 19

Pwn Adventure Sourcery part 2

Fri 04 January 2019 ctf ctf / reversing / assembly

How to solve Pwn Adventure Sourcery swamp challenges

Pwn Adventure Sourcery part 1

Thu 03 January 2019 ctf ctf / reversing / assembly / binary exploitation / pwnable

How to solve Pwn Adventure Sourcery start challenges

Ethernaut wargame Lvl. 20-22

Thu 27 December 2018 ctf ctf / ethereum / solidity

How to solve Ethernaut wargame lvl. 20-22

Blockchain CTF Lvl. 10-11

Sat 22 December 2018 ctf ctf / ethereum / solidity

How to solve Blockchain CTF lvl. 10-11

Blockchain CTF Lvl. 6-9

Wed 19 December 2018 ctf ctf / ethereum / solidity

How to solve Blockchain CTF lvl. 6-9

Blockchain CTF Lvl. 1-5

Mon 17 December 2018 ctf ctf / ethereum / solidity

How to solve Blockchain CTF lvl. 1-5

Bootstrap css google fonts removal

Thu 13 December 2018 misc bootstrap / css

How to remove googleapis call for fonts

Arcanesector maze solver

Sun 09 December 2018 misc ctf / maze

How to solve arcanesector maze

CS 1.6 Steam ID Changer

Mon 03 December 2018 reversing cs 1.6 / reversing / cheat engine

How to change steamID for non-steam CS 1.6 version

TJCTF Binary exploitation part 2

Mon 13 August 2018 ctf ctf / pwnable / binary exploitation / GOT

How to solve TJCTF Binary exploitation challenges part 2

TJCTF Binary exploitation part 1

Mon 13 August 2018 ctf ctf / pwnable / binary exploitation

How to solve TJCTF Binary exploitation challenges part 1

PicoCTF 2017 Lvl3 Config Console

Wed 08 August 2018 ctf ctf / pwnable / binary exploitation / GOT

How to solve picoCTF Lvl3 Config Console

Hackable.ca User Manager

Fri 03 August 2018 ctf ctf / pwnable / binary exploitation

How to solve hackable.ca User Manager

Pwnable.tw start

Wed 01 August 2018 ctf ctf / pwnable / binary exploitation / shellcode

How to solve pwnable.tw start challenge

Hackable.ca Easy ROP

Mon 30 July 2018 ctf ctf / pwnable / binary exploitation / rop

How to solve hackable.ca Easy ROP

PicoCTF 2017 Lvl2 Remaining binary challenges

Sun 29 July 2018 ctf ctf / pwnable / binary exploitation

How to solve picoCTF Lvl2 remaining binary challenges

PicoCTF 2017 Lvl2 Guess the number

Sat 28 July 2018 ctf ctf / pwnable / binary exploitation

How to solve picoCTF Lvl2 Guess the number

PicoCTF 2017 Lvl2 Shells

Fri 27 July 2018 ctf ctf / pwnable / binary exploitation

How to solve picoCTF Lvl2 Shells

RyanCTF Input Validation

Fri 27 July 2018 ctf ctf

How to solve RyanCTF Input Validation

Uphigh CTF lvl. 4

Mon 23 July 2018 ctf ctf / crypto

How to solve Uphigh CTF lvl. 4

Recent Articles:

asm-some Wed 07 February 2024 reversing asm / misc

Werbe videoblocker Sat 28 August 2021 misc js

ACE labs puzzle Sat 21 August 2021 ctf assembly

SHA 2017 Title case Sat 17 April 2021 ctf python

Automated Reasoning: satisfiability Sun 21 February 2021 misc z3

Drow ELF patcher Tue 12 May 2020 misc elf / c / linux

W3challs striptease Sun 16 February 2020 reversing crackme / elf

XML exploits Sun 26 January 2020 misc xml / exploitation / XXE / java

Hollow Knight cheat Tue 21 January 2020 misc cheat engine / reversing

GoatCounter Fri 17 January 2020 misc js / statistics

Opensubtitles addon Sun 05 January 2020 misc javascript / browser

ELF prepender Thu 02 January 2020 misc rust / elf / linux

Windows persistance DuplicateHandle Sun 08 December 2019 tutorial windows

Malwaretech VM 1 reversing challenge Wed 27 November 2019 reversing crackme / vm

Crackmes one 7eRoM's 1st one challenge Sat 16 November 2019 reversing crackme / windows / radare2 / unicorn

Crackmes one Mexican Sat 09 November 2019 reversing reversing / crackme / windows / radare2

247 CTF part 1 Sat 09 November 2019 ctf reversing / z3 / misc

Chrome password extractor Sat 31 August 2019 misc rust / misc / chrome

Ascii art && fractals Mon 24 June 2019 misc algorithm

Pdqsort Wed 22 May 2019 misc sorting / algorithm

Timsort Sat 18 May 2019 misc sorting / algorithm

Spectre V1 Sun 21 April 2019 tutorial spectre / cache

IAT hooking Wed 17 April 2019 tutorial windows / dll / IAT / hook

Implicit dll linking Sun 14 April 2019 tutorial windows / dll / lib

MOBISEC CTF reversing 6-7 Tue 09 April 2019 ctf android / reversing / java / dex / apk

MOBISEC CTF reversing 1-5 Wed 03 April 2019 ctf android / reversing / java / dex / apk

Ghost dll injections Sat 30 March 2019 tutorial windows / binary exploitation

UTCTF 2019 Super Secure Authentication Tue 19 March 2019 ctf ctf / reversing / java

Pragyan CTF 2019 Super Secure Vault Tue 12 March 2019 ctf ctf / reversing

Blockchain CTF Lvl. 12-13 Mon 11 March 2019 ctf ctf / ethereum / solidity

Using MutationObserver and MediaQuery Wed 06 March 2019 misc js / MutationObserver / MediaQuery

Ret2 systems wargame Fri 25 January 2019 ctf ctf / reversing / assembly

Etherhacker wargame Lvl. 1-4 Mon 14 January 2019 ctf ctf / ethereum / solidity

Ethernaut wargame Lvl. 19 Sun 13 January 2019 ctf ctf / ethereum / solidity

Pwn Adventure Sourcery part 2 Fri 04 January 2019 ctf ctf / reversing / assembly

Pwn Adventure Sourcery part 1 Thu 03 January 2019 ctf ctf / reversing / assembly / binary exploitation / pwnable

Ethernaut wargame Lvl. 20-22 Thu 27 December 2018 ctf ctf / ethereum / solidity

Blockchain CTF Lvl. 10-11 Sat 22 December 2018 ctf ctf / ethereum / solidity

Blockchain CTF Lvl. 6-9 Wed 19 December 2018 ctf ctf / ethereum / solidity

Blockchain CTF Lvl. 1-5 Mon 17 December 2018 ctf ctf / ethereum / solidity

Bootstrap css google fonts removal Thu 13 December 2018 misc bootstrap / css

Arcanesector maze solver Sun 09 December 2018 misc ctf / maze

CS 1.6 Steam ID Changer Mon 03 December 2018 reversing cs 1.6 / reversing / cheat engine

TJCTF Binary exploitation part 2 Mon 13 August 2018 ctf ctf / pwnable / binary exploitation / GOT

TJCTF Binary exploitation part 1 Mon 13 August 2018 ctf ctf / pwnable / binary exploitation

PicoCTF 2017 Lvl3 Config Console Wed 08 August 2018 ctf ctf / pwnable / binary exploitation / GOT

Hackable.ca User Manager Fri 03 August 2018 ctf ctf / pwnable / binary exploitation

Pwnable.tw start Wed 01 August 2018 ctf ctf / pwnable / binary exploitation / shellcode

Hackable.ca Easy ROP Mon 30 July 2018 ctf ctf / pwnable / binary exploitation / rop

PicoCTF 2017 Lvl2 Remaining binary challenges Sun 29 July 2018 ctf ctf / pwnable / binary exploitation

PicoCTF 2017 Lvl2 Guess the number Sat 28 July 2018 ctf ctf / pwnable / binary exploitation

PicoCTF 2017 Lvl2 Shells Fri 27 July 2018 ctf ctf / pwnable / binary exploitation

RyanCTF Input Validation Fri 27 July 2018 ctf ctf

Uphigh CTF lvl. 4 Mon 23 July 2018 ctf ctf / crypto