hw2 done

upload.py

@@ -0,0 +1,30 @@
+#!/usr/bin/env -S python3
+from pwn import *
+from struct import pack
+from tqdm import tqdm
+
+if len(sys.argv) < 2:
+    print("no args for serial device")
+    exit()
+
+while True:
+    kernel = open("kernel8.img", "rb").read()
+    r = serialtube(sys.argv[1], convert_newlines=False)
+
+    # send size
+    sz = len(kernel)
+    print("size:", sz)
+    r.send(pack("<I", sz))
+    print(r.recvuntil(b"$").decode())
+
+    # send kernel
+    splitsize = 1000
+    for i in tqdm(range(len(kernel) // splitsize), unit="KB"):
+        r.send(kernel[i * splitsize : (i + 1) * splitsize])
+
+    r.send(kernel[len(kernel) // splitsize * splitsize:])
+
+    r.interactive()
+
+    r.send(b"reboot\n")
+    sleep(1)