add a stripping tool and a random key experiment

c8_remote/CMakeLists.txt

@@ -5,6 +5,7 @@ set(CMAKE_C_STANDARD 99)
 set(CMAKE_C_FLAGS "-g -Wall")
 
 include_directories(include)
+add_subdirectory(lib)
 
 add_executable(checkm8_remote main.c src/usb_helpers.c src/exploit.c src/payload.c src/command.c)
 target_link_libraries(checkm8_remote usb-1.0 pthread udev m)

c8_remote/main.c

@@ -4,6 +4,7 @@
 #include <string.h>
 #include <stdlib.h>
 #include <math.h>
+#include <time.h>
 
 #include "dev/types.h"
 #include "util/experiments.h"
@@ -106,12 +107,26 @@ void run_corr_exp(struct pwned_device *dev, char *fname)
     unsigned char key[16];
     unsigned char key_sched[176];
 
+    sprintf(fname, "KEY");
+    outfile = fopen(fname, "w");
+    if(outfile == NULL)
+    {
+        printf("failed to open key file\n");
+        return;
+    }
+
+    srand(time(NULL));
     for(i = 0; i < 16; i++)
     {
         msg[i] = 0;
-        key[i] = 0x0;
+        key[i] = random();
+        fprintf(outfile, "%02x", key[i]);
     }
 
+    fprintf(outfile, "\n");
+    fflush(outfile);
+    fclose(outfile);
+
     expand_key(key, key_sched, 11, c);
 
     addr_async_buf = setup_corr_exp(dev, key);