README.md

gdb

shellcode

gef

shellcode search linux/x86

peda

shellcode generate x86/linux exec 

Basic : How to use

# Break
(gdb) b main
(gdb) b *main+32

# info
(gdb) info break
(gdb) info register

(gdb) display/ i $pc

(gdb) x[/범위][출력형식][범위의 단위]
(gdb) x/16bx $esp
(gdb) x/32cw main

(gdb) si
(gdb) ni

(gdb) run
(gdb) finish

ARM binary cross-debugging 환경 구축

Cross-compiler

$ sudo apt-get install libc6-armel-cross libc6-dev-armel-cross
$ sudo apt-get install binutils-arm-linux-gnueabi
$ sudo apt-get install libncurses5-dev

$ sudo apt-get install gcc-arm-linux-gnueabi
$ sudo apt-get install g++-arm-linux-gnueabi

GDB multi-arch 설치

$ sudo apt-get install gdb-multiarch

Python 2.7 호환 GDB 설치

Trouble compiling GDB with python 2.7 support for gdb-peda - Ask Ubuntu

64 bit

$ sudo apt-get remove gdb
$ wget http://security.ubuntu.com/ubuntu/pool/main/g/gdb/gdb_7.4-2012.02-0ubuntu2_amd64.deb
$ sudo dpkg -i ./gdb_7.4-2012.02-0ubuntu2_amd64.deb

32 bit

$ sudo apt-get remove gdb
$ wget http://security.ubuntu.com/ubuntu/pool/main/g/gdb/gdb_7.4-2012.02-0ubuntu2_amd64.deb
$ sudo dpkg -i ./gdb_7.4-2012.02-0ubuntu2_i386.deb