ucdavis-ecs189m

commit 61d11e1892cb90bbcc8f42d883a5cc7ee3e07156
parent f264a2e04eca9332b4df7c5aca9f729c4db5e532
Author: therealFIGBERT <figbertwelner@gmail.com>
Date:   Thu, 10 Oct 2019 11:33:59 -0700

Simplifying passgen of third_flag.py

Diffstat:
M
third_flag.py
 | 
30
+++++++++++++-----------------

1 file changed, 13 insertions(+), 17 deletions(-)
diff --git a/third_flag.py b/third_flag.py
@@ -18,33 +18,29 @@ def dec_to_str(num):
     st += char  
     return st
 
+def passgen(low: str, high: str) -> str:
+    return dec_to_str((str_to_dec(low)+str_to_dec(high))/2)
+
 cracked = False
 attempt = 1
-LO26 = "aaaaaaaaaaaaaaaaaaaa"
-HI26 = "zzzzzzzzzzzzzzzzzzzz"
-LO10 = str_to_dec(LO26)
-HI10 = str_to_dec(HI26)
-MID10 = (LO10 + HI10)/2
-MID26 = dec_to_str(MID10)
+LO = "aaaaaaaaaaaaaaaaaaaa"
+HI = "zzzzzzzzzzzzzzzzzzzz"
+password = passgen(LO, HI)
 conn = remote("twinpeaks.cs.ucdavis.edu", 30004)
 print(conn.recv())
 while not cracked:
-    conn.sendline(MID26)
-    print("Attempt {}:\nPass sent as:\n{}\nCurrent low:\n{}\nCurrent high:\n{}\n".format(attempt, MID26, LO26, HI26))
+    conn.sendline(password)
+    print("Attempt {}:\nPass sent as:\n{}\nCurrent low:\n{}\nCurrent high:\n{}\n".format(attempt, password, LO, HI))
     attempt += 1
     response = conn.recvline_contains(b"strcmp")
     print("Server response:\n{}\n".format(response))
     if b" -1 " in response:
-        LO26 = MID26
-        LO10 = str_to_dec(LO26)
-        MID10 = (LO10 + HI10)/2
-        MID26 = dec_to_str(MID10)
+        LO = password
+        password = passgen(LO, HI)
     elif b" 1 " in response:
-        HI26 = MID26
-        HI10 = str_to_dec(HI26)
-        MID10 = (LO10 + HI10)/2
-        MID26 = dec_to_str(MID10)
+        HI = password
+        password = passgen(LO, HI)
     else:
-        print("Password cracked as: {}".format(MID26))
+        print("Password cracked as: {}".format(password))
         cracked = True
         conn.interactive()
 \ No newline at end of file