I'm using python pwntools. I'm using python 3.10.x
This line of code should open a shell for me:
io.interactive()
But while running this file from vim using
!./% it doesn't open the shell doesn't invoke as it was supposed to be. The process stops contrarily.
The code:
#!/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()
Error:
/home/pegasus/Documents/Courses/HeapLAB-main/house_of_force/./exploit.py:19: BytesWarning: Text is not bytes; assuming ASCII, no guarantees. See https://docs.pwntools.com/#bytes
io.sendafter("size: ", f"{size}")
/home/pegasus/.local/lib/python3.10/site-packages/pwnlib/tubes/tube.py:813: BytesWarning: Text is not bytes; assuming ASCII, no guarantees. See https://docs.pwntools.com/#bytes
res = self.recvuntil(delim, timeout=timeout)
/home/pegasus/Documents/Courses/HeapLAB-main/house_of_force/./exploit.py:21: BytesWarning: Text is not bytes; assuming ASCII, no guarantees. See https://docs.pwntools.com/#bytes
io.recvuntil("> ")
[*] delta between heap & main(): 0xfffffffffebd9816
[*] Switching to interactive mode
[*] Stopped process '/home/pegasus/Documents/Courses/HeapLAB-main/house_of_force/house_of_force' (pid 7496)