commit 21a86a8f6501315683824a302afc4be56c7e57e9
parent b9f756e53c1228b2b58c4b6ed20e69408a2e50ce
Author: therealFIGBERT <figbertwelner@gmail.com>
Date: Thu, 3 Oct 2019 11:09:29 -0700
Adding rudimentary flip detection
Diffstat:
| M | third_flag.py | | | 59 | +++++++++++++++++++++++++++++++++++------------------------ |
1 file changed, 35 insertions(+), 24 deletions(-)
diff --git a/third_flag.py b/third_flag.py
@@ -28,10 +28,11 @@ def find_middle(lst):
master_alphabet = ["a","b","c","d","e","f","g","h","i","j","k","l","m","n","o","p","q","r","s","t","u","v","w","x","y","z"]
current_mid = find_middle(master_alphabet)
-cracked = False
alphabet = master_alphabet
passkey = ""
-previous_pass = ""
+cracked = False
+flipped = False
+last_response_was_small = True
start = 0
conn = remote("twinpeaks.cs.ucdavis.edu", 30004)
@@ -43,25 +44,35 @@ print("Pass sent as:\n%s"%passkey)
response = conn.recvline_contains(b"strcmp")
print("Server response:\n%s"%response)
while not cracked:
- if b" -1 " in response:
- alphabet = alphabet[current_mid:]
+ while not flipped:
+ if b" -1 " in response:
+ alphabet = alphabet[current_mid:]
+ current_mid = find_middle(alphabet)
+ passkey = pass_gen(char=alphabet[current_mid], pos=start, premade=passkey)
+ if last_response_was_small:
+ flipped = False
+ else:
+ flipped = True
+ last_response_was_small = True
+ elif b" 1 " in response:
+ alphabet = alphabet[:current_mid]
+ current_mid = find_middle(alphabet)
+ passkey = pass_gen(char=alphabet[current_mid], pos=start, premade=passkey)
+ if last_response_was_small:
+ flipped = True
+ else:
+ flipped = False
+ last_response_was_small = False
+ else:
+ print("Password cracked as: %s"%passkey)
+ cracked = True
+ conn.interactive()
+ conn.sendline(passkey)
+ print("Current letters:\n%s"%alphabet)
+ print("Pass sent as:\n%s"%passkey)
+ response = conn.recvline_contains(b"strcmp")
+ print("Server response:\n%s"%response)
+ alphabet = master_alphabet[master_alphabet.index(alphabet[0]):]
current_mid = find_middle(alphabet)
- previous_pass = passkey
- passkey = pass_gen(char=alphabet[current_mid], pos=start, premade=passkey)
- elif b" 1 " in response:
- alphabet = alphabet[:current_mid]
- current_mid = find_middle(alphabet)
- previous_pass = passkey
- passkey = pass_gen(char=alphabet[current_mid], pos=start, premade=passkey)
- else:
- print("Password cracked as: %s"%passkey)
- cracked = True
- conn.interactive()
- conn.sendline(passkey)
- print("Current letters:\n%s"%alphabet)
- print("Pass sent as:\n%s"%passkey)
- response = conn.recvline_contains(b"strcmp")
- print("Server response:\n%s"%response)
- alphabet = master_alphabet[master_alphabet.index(alphabet[0]):]
- current_mid = find_middle(alphabet)
- start += 1
-\ No newline at end of file
+ start += 1
+ flipped = False
+\ No newline at end of file
