06-08-2011
Thanks
Reading about mmap now.
As for why I'm doing it, sort of a hobbie, write lots of ciphers and file hiding programs, thought I'd write one that can hide the resulting programs. Create a big maze of ciphered and hidden files and get my friends to try and find and decode them.
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LEARN ABOUT DEBIAN
ragg2-cc
RAGG2-CC(1) BSD General Commands Manual RAGG2-CC(1)
NAME
ragg2-cc -- CC frontend for compiling shellcodes
SYNOPSIS
ragg2-cc [-a arch] [-b bits] [-k kernel] [-o file] [-dscxvh]
DESCRIPTION
ragg2-cc is a frontend of CC. It is used to creates tiny binaries (1KB) or shellcodes in binary or hexpairs from a C source.
The compiler used is the one configured by the CC environment. This has been tested with gcc, llvm-gcc and clang.
Uses sflib (shellforge4) includes to get the syscall definitions.
Only linux/darwin x86-32/64 is supported at the moment. Planned support for more architectures.
OPTIONS
-a arch set architecture x86, arm
-b bits 32 or 64
-k kernel windows, linux or osx
-o file output file to write result of compilation
-h show help message
-v show version
-d show assembler code
-s generate assembly file
-c generate compiled shellcode
-x show hexpair bytes
EXAMPLE
$ cat hi.c
int main() {
write (1, "Hello World
", 12);
exit (0);
}
$ ragg2-cc hi.c
hi.c.bin
# Linked into a tiny binary. This is 294 bytes
$ wc -c < hi.c.bin
294
$ ./hi.c.bin
Hello World
# The compiled shellcode has zeroes
$ ragg2-cc -x hi.c
e90000000083ec0ce800000000588d882a000000b804000000606a0651
6a0150cd8083c41061b8010000006a0050cd8083c40883c40cc368656c
6c6f0a00
# Use a xor encoder with key 32 to bypass
$ ragg2 -e xor -c key=32 -B `ragg2-cc -x hi.c`
6a3e596a205be8ffffffffc15e4883c60d301e48ffc6e2f9c920202020
a3cc2cc82020202078ada80a2020209824202020404a26714a2170eda0
a3e4304198212020204a2070eda0a3e428a3e42ce348454c4c4f2a20
SEE ALSO
radare2(1), rahash2(1), rafind2(1), rabin2(1), rafind2(1), ranal2(1), radiff2(1), rasm2(1), ragg2cc(1),
AUTHORS
pancake <pancake@nopcode.org>
BSD
Dec 5, 2011 BSD