
Explore how unusual use of printf format specifiers pulls values from the stack, exposes memory addresses, and enables format string vulnerabilities when untrusted data controls output.
Explore the dangers of format string vulnerabilities, including leaking memory addresses to bypass ASLR and stack protections, revealing secrets, overriding memory, and causing denial of service.
demonstrates how to exploit format string vulnerabilities to dump stack data and cause a crash by using an invalid memory address, resulting in a segmentation fault.
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This course teaches exploit development concepts for Linux (x86_64) and it is specifically focused on format string vulnerabilities. This course begins by introducing students to the format string concepts on Linux x86_64 platform (though the concepts remain the same on other architectures too). We will slowly gear towards understanding how format string vulnerabilities can be leveraged to exploit other vulnerabilities such as Buffer Overflows. This is clearly taught in the course by showing various practical examples such as bypassing stack canaries and bypassing ASLR. This is an entry level to intermediate level course and we encourage you to take this course if you are interested to learn exploit development concepts surrounding format string vulnerabilities and memory leaks specifically for 64 bit intel processors. However, remember that the course involves a lot of assembly language and debugging using a debugger. So, you need patience and passion to learn the concepts taught in the course. This course makes use of a variety of techniques on exploit development and brace yourself if you are willing to learn by sitting in front of a computer. After successfully completing this course, you will be ready to attempt several industry leading practical cyber security certification exams.