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Finished injection module at userspace using /proc/<pid>/maps, enables to overwrite the GOT section with RELRO activated

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h3xduck
2022-04-07 07:11:28 -04:00
parent 96cfda8c1f
commit 3438f5846f
24 changed files with 14973 additions and 14466 deletions
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25
src/ebpf/include/data/ring_buffer.h
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@@ -41,6 +41,31 @@ static __always_inline int ring_buffer_send(struct ring_buffer *rb, int pid, eve
bpf_ringbuf_submit(event, 0);
return 0;
}
/**
* @brief Sends an event indicating a vulnerable syscall injection into the specified ring kernel buffer
*
* @return 0 if ok, -1 if error
*/
static __always_inline int ring_buffer_send_vuln_sys(struct ring_buffer *rb, int pid, __u64 syscall_address, __u64 process_stack_return_address, u64 libc_main_address, u64 libc_dlopen_mode_address, __u64 libc_malloc_address, __u64 got_address, int relro_active){
struct rb_event *event = (struct rb_event*) bpf_ringbuf_reserve(rb, sizeof(struct rb_event), 0);
if(!event){
return -1;
}
event->event_type = VULN_SYSCALL;
event->pid = pid;
event->libc_dlopen_mode_address = libc_dlopen_mode_address;
event->libc_main_address = libc_main_address;
event->libc_malloc_address = libc_malloc_address;
event->process_stack_return_address = process_stack_return_address;
event->syscall_address = syscall_address;
event->got_address = got_address;
event->relro_active = relro_active;
bpf_ringbuf_submit(event, 0);
return 0;
}