Everything about security



[Kaspersky Industrial CTF 2018] Glardomos Write-up (Reverse587)

Find the flag inside the binary Glardomos.exe Let’s check the file information.

It is a 32-bit .NET executable file. Let’s try to decompile it.

The binary is heavily obfuscated with ConfuserEx v1.0.0.¬†We need to unpack and deobfuscate this… Continue Reading →

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

nc 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 →

[Kaspersky Industrial CTF 2018] Expression Write-up (Web50) The website allows us to send two numbers/tokens and an operation among +, -, *, /. Let’s send 1 + 2 to test it.

It calculated the result and gave us a token which is obviously base64 encoded…. Continue Reading →

[Kaspersky Industrial CTF Quals 2017] Bad Computations Write-up (Crypto800)

The creators of a certain system have taken care of the security of storing users data and encrypted users passwords. To register a new user the administrator should enter encrypted password into the database. You were able to get a… Continue Reading →

[Kaspersky Industrial CTF Quals 2017] Backdoor Pi Write-up (Reverse300)

We are doing an project for a school competition in which we need to use a Raspberry Pi to make an IOT prototype. We received SD cards from the professor, and because we lost ours we asked another group to… Continue Reading →

[Kaspersky Industrial CTF Quals 2017] Security Home Cameras Write-up (Crypto300)

The smart home system has the function of remote monitoring of what is happening in the home and every few minutes sends pictures of the surveillance cameras to the owner of the house. You successfully intercepted the network traffic of… Continue Reading →

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