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Tag Archives: x86
Shellcode – Windows/x86 – Create Administrator User – Dynamic PEB & EDT
Hello everyone, Recently I’ve been learning about Windows x86 shellcoding and I decided to write a shellcode by my own. My idea was to write a shellcode that creates a new user and make it local administrator. You can find … Continue reading
Posted in Exploiting
Tagged administrator, Assembly, exploit development, exploiting, osed, shellcode, shellcoding, x86
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Protostar – Format Strings – Level 4
Hello everyone! This is the blog post for the level 4 format level of Protostar, that is the last one. This is the hint: And this is the code: Before I start, I have to say that I had no … Continue reading
Posted in Exploiting
Tagged Assembly, Boofuzz, CTF, exploit development, Format Strings, Fuzzing, GOT, hacking, OSCE, OSCE exam, ProtoStar, SEH, shellcode, x86
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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
Posted in Exploiting
Tagged Assembly, Boofuzz, CTF, exploit development, Format Strings, Fuzzing, hacking, OSCE, OSCE exam, ProtoStar, SEH, shellcode, x86
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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
Posted in Exploiting
Tagged Assembly, Boofuzz, CTF, exploit development, Format Strings, Fuzzing, hacking, OSCE, OSCE exam, ProtoStar, SEH, shellcode, x86
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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
Posted in Exploiting
Tagged Assembly, Boofuzz, CTF, exploit development, Format Strings, Fuzzing, hacking, OSCE, OSCE exam, ProtoStar, SEH, shellcode, x86
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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
Posted in Exploiting
Tagged Assembly, Boofuzz, CTF, exploit development, Format Strings, Fuzzing, hacking, OSCE, OSCE exam, ProtoStar, SEH, shellcode, x86
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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
Posted in Exploiting
Tagged Assembly, Boofuzz, CTF, exploit development, Format Strings, Fuzzing, hacking, OSCE, OSCE exam, ProtoStar, SEH, shellcode, x86
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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
Posted in Exploiting
Tagged Assembly, Boofuzz, exploit development, Fuzzing, hacking, Mobatek, MobaXterm, OSCE, OSCE exam, SEH, shellcode, x86
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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
Posted in Exploiting
Tagged Assembly, Boofuzz, DameWare, exploit development, Fuzzing, hacking, OSCE, OSCE exam, SEH, shellcode, x86
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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
Posted in Exploiting
Tagged antivirus, Assembly, av bypass, av evasion, backdoor, bypass, exploit-db, exploiting, hacking, kaspersky, OSCE, OSCE exam, shellcode, shellcoding, windows, x86
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