Shellcode Factory tool

A tool to print and test shellcodes from assembly code.

It supports both Gas and Intel syntax (.s and .asm extensions respectively), as well as x86 and x64 architectures.

Usage:

make targets [parameters]

targets:

• assembly - will compile the assembly code from shellcode.s

• debug - debugs the assembly binary

• print / xxd / p - will print the shellcode in hex

• set - will call nano shellcode.s, to set the source assembly code

• put - will call nano tester.c, to put in it hex-encoded shellcode

• test - will compile tester.c and run it, thus testing the shellcode

• auto / a - will do all of the above in one single step:

  compiling shellcode.s into hex bytes,
  loading those hex bytes into an auto-generated tester program (auto.c)
  compiling and running that very program

• debug_sc - debugs auto i.e. the shellcode when called from a smashed stack

parameters:

• ARCH=XX (default=32) XX-bit binaries (32 / 64)

• S=filename (default=shellcode.s) Source assembly filename.

Examples:

• make print S=foo.s will print the shellcode from foo.s

• make ARCH=64 auto will test x64 shellcode

Requires:

1. gcc (as frontend) and nasm for GAS and INTEL syntax respectively (extensions .s and .asm)

2. gdb (I even recommend using it with the peda enhancement: https://github.com/longld/peda)

3. python

4. cut

5. objdump (optional: you can comment out the objdump lines in the Makefile)

6. nano (optional: set and put targets only, and you can replace the EDITOR=... line in the Makefile by your own editor)