GDB

Handcrafting Linux Shellcode

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Crafting your own shellcode requires getting muddy with low level programming. One does not simply write machine code from memory. This blog post is my attempt at providing a template and tutorial of the shellcode creation process for a 32-bit Linux machine. The first step we will take is to write the task we want … Read more

ELF Binary Disassembly

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Let us take a tour through a disassembly dump of an ELF binary and see if we can reverse engineer it. The following output is a result of: mech@dev:$ gcc -o distut distut.c mech@dev:$ objdump -d distut|grep main The reader is assumed to be familiar with the above output. I have removed the memory addresses … Read more