pass

Author: nanlioniya

lab8/solve.py

@@ -1,11 +1,47 @@
 #!/usr/bin/env python3
 
-import angr,sys
+def solve():
+    # 我們需要找到滿足以下條件的 8 個字元：
+    # 1. (input[0] ^ input[1]) == 0x55
+    # 2. (input[2] + input[3]) == 200
+    # 3. (input[4] * 3) == input[5]
+    # 4. (input[6] - input[7]) == 1
+    # 5. (input[1] + input[2] - input[3]) == 50
+    # 6. (input[5] ^ input[6]) == 0x2A
+    
+    # 嘗試所有可能的值
+    for a in range(32, 127):  # input[0]
+        for b in range(32, 127):  # input[1]
+            if (a ^ b) != 0x55:
+                continue
+                
+            for c in range(32, 127):  # input[2]
+                for d in range(32, 127):  # input[3]
+                    if (c + d) != 200:
+                        continue
+                    
+                    if (b + c - d) != 50:
+                        continue
+                    
+                    for e in range(32, 127):  # input[4]
+                        f = e * 3  # input[5]
+                        if f < 32 or f > 126:
+                            continue
+                            
+                        for g in range(32, 127):  # input[6]
+                            if (f ^ g) != 0x2A:
+                                continue
+                                
+                            h = g - 1  # input[7]
+                            if h < 32 or h > 126:
+                                continue
+                            
+                            # 所有條件都滿足，輸出密鑰
+                            key = chr(a) + chr(b) + chr(c) + chr(d) + chr(e) + chr(f) + chr(g) + chr(h)
+                            return key
+    
+    return "No solution found!"
 
-def main():
-    secret_key = b""
-    sys.stdout.buffer.write(secret_key)
-
-
-if __name__ == '__main__':
-    main()
+if __name__ == "__main__":
+    key = solve()
+    print(key)