1 files changed, 58 insertions, 0 deletions
diff --git a/HeapLAB/house_of_force/pwntools_template.py b/HeapLAB/house_of_force/pwntools_template.py
new file mode 100755
index 0000000..22d980b
--- /dev/null
+++ b/HeapLAB/house_of_force/pwntools_template.py
@@ -0,0 +1,58 @@
+#!/usr/bin/python3
+from pwn import *
+
+elf = context.binary = ELF("house_of_force")
+libc = elf.libc
+
+gs = '''
+continue
+'''
+def start():
+    if args.GDB:
+        return gdb.debug(elf.path, gdbscript=gs)
+    else:
+        return process(elf.path)
+
+# Select the "malloc" option, send size & data.
+def malloc(size, data):
+    io.send("1")
+    io.sendafter("size: ", f"{size}")
+    io.sendafter("data: ", data)
+    io.recvuntil("> ")
+
+# Calculate the "wraparound" distance between two addresses.
+def delta(x, y):
+    return (0xffffffffffffffff - x) + y
+
+io = start()
+
+# This binary leaks the address of puts(), use it to resolve the libc load address.
+io.recvuntil("puts() @ ")
+libc.address = int(io.recvline(), 16) - libc.sym.puts
+
+# This binary leaks the heap start address.
+io.recvuntil("heap @ ")
+heap = int(io.recvline(), 16)
+io.recvuntil("> ")
+io.timeout = 0.1
+
+# =============================================================================
+
+# =-=-=- EXAMPLE -=-=-=
+
+# The "heap" variable holds the heap start address.
+log.info(f"heap: 0x{heap:02x}")
+
+# Program symbols are available via "elf.sym.<symbol name>".
+log.info(f"target: 0x{elf.sym.target:02x}")
+
+# The malloc() function chooses option 1 from the menu.
+# Its arguments are "size" and "data".
+malloc(24, b"Y"*24)
+
+# The delta() function finds the "wraparound" distance between two addresses.
+log.info(f"delta between heap & main(): 0x{delta(heap, elf.sym.main):02x}")
+
+# =============================================================================
+
+io.interactive()