Tag Archives: hacking

Protostar – Format Strings – Level 3

This is another post about Protostar exploiting box. Let’s start working in the interesting levels 🙂 This is the hint for the level: And this is the code: As the level starts as the last one, I’m going to cover … Continue reading

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Protostar – Format Strings – Level 2

Hello everyone, Let’s continue working in Protostar exploit exercises 🙂 Next exercise says the following: And this is the code for this level 2: This time, the input is received in a different way: Let’s start as the past levels. … Continue reading

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Protostar – Format Strings – Level 1

Let’s continue working in ProtoStar exploiting exercises. Let’s see how to solve the Format String level 1. As always, first let’s read the level description. Exercise: This level shows how format strings can be used to modify arbitrary memory locations. … Continue reading

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Protostar – Format Strings – Level 0

Hello everyone! In this blog post I will cover the solution for the Exploiting exercise named ProtoStar that is related to Format String vulnerabilities. Let’s see the first level: Exercise 0: This level introduces format strings, and how attacker supplied … Continue reading

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Introduction to Format Strings Bugs

Format strings are the result of facilities for handling functions with variable arguments in the C programming language. Because it’s really C what makes format strings bugs possible, they affect every OS that has a C compiler. What is a … Continue reading

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MobaXterm Buffer Overflow – Malicious Sessions File import

Hello! In this blog post I will talk about the exploitation of a vulnerability that I discovered on August of 2019 in MobaXterm application. MobaXterm is a well known remote administration tool, that is used in many companies or in … Continue reading

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SEH based local Buffer Overflow – DameWare Remote Support

Hello everyone! At this blog post I’m going to speak about a vulnerability that I detected at July of 2019 in DameWare Remote Support V. 12.1.0.34. DameWare is a well known remote administration tool that allows user to connect to … Continue reading

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Bypassing Kaspersky AntiVirus 2018

Hello, In this blog post I’m going to show how to do a trick to bypass the Kaspersky 2018 AV. For the example, I’m going to use a netcat 99 binary that Kaspersky is going to detect as the following … Continue reading

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Backdooring a Windows Binary bypassing ASLR memory protection

Hello, Today is a sunny day here in my country and I should be in the beach drinking a cold beer, but I don’t know why… I’m here at home embedding a backdoor inside a Windows binary. I’ve already wrote … Continue reading

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Exploit Development – Vulnserver HTER – Hex conversion

Hello! One more Vulnserver write-up. This one is HTER function, it has some similarities with his brother LTER. LTER was converting the buffer to Unicode and HTER is going to convert it to hexadecimal. Let’s see what happens when this … Continue reading

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