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May 24, 2015 02:37
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miasm v1 nux_api
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| # | |
| # Copyright (C) 2011 EADS France, Fabrice Desclaux <fabrice.desclaux@eads.net> | |
| # | |
| # This program is free software; you can redistribute it and/or modify | |
| # it under the terms of the GNU General Public License as published by | |
| # the Free Software Foundation; either version 2 of the License, or | |
| # (at your option) any later version. | |
| # | |
| # This program is distributed in the hope that it will be useful, | |
| # but WITHOUT ANY WARRANTY; without even the implied warranty of | |
| # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
| # GNU General Public License for more details. | |
| # | |
| # You should have received a copy of the GNU General Public License along | |
| # with this program; if not, write to the Free Software Foundation, Inc., | |
| # 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. | |
| # | |
| from to_c_helper import * | |
| import struct | |
| import inspect | |
| import socket | |
| import time | |
| import random | |
| import os | |
| import sys | |
| import string | |
| ctime_str = None | |
| def fd_generator(): | |
| i = 0 | |
| while True: | |
| yield i | |
| i+=1 | |
| fd_gen = fd_generator() | |
| fd_stdin = fd_gen.next() | |
| fd_stout = fd_gen.next() | |
| socket_pool = {} | |
| def get_str_ansi(ad_str, max_l = None): | |
| l = 0 | |
| tmp = ad_str | |
| while vm_get_str(tmp, 1) != "\x00": | |
| tmp +=1 | |
| l+=1 | |
| if max_l and l > max_l: | |
| break | |
| return vm_get_str(ad_str, l) | |
| def get_dw_stack(offset): | |
| esp = vm_get_gpreg()['esp'] | |
| return updw(vm_get_str(esp+offset, 4)) | |
| def whoami(): | |
| return inspect.stack()[1][3] | |
| def xxx___libc_start_main(): | |
| ret_ad = vm_pop_uint32_t() | |
| arg_1 = get_dw_stack(0) | |
| arg_2 = get_dw_stack(4) | |
| arg_3 = get_dw_stack(4) | |
| arg_4 = get_dw_stack(8) | |
| arg_5 = get_dw_stack(0xc) | |
| arg_6 = get_dw_stack(0x10) | |
| arg_7 = get_dw_stack(0x14) | |
| arg_8 = get_dw_stack(0x18) | |
| print whoami(), hex(ret_ad), hex(arg_1), hex(arg_2), hex(arg_3), hex(arg_4), hex(arg_5), hex(arg_6), hex(arg_7), hex(arg_8) | |
| regs = vm_get_gpreg() | |
| regs['eip'] = arg_1 # main | |
| # TODO XXX should push argc, argv here | |
| vm_set_gpreg(regs) | |
| vm_push_uint32_t(0x1337beef) | |
| def xxx_memset(): | |
| ret_ad = vm_pop_uint32_t() | |
| arg_addr = get_dw_stack(0) | |
| arg_c = get_dw_stack(4) | |
| arg_size = get_dw_stack(8) | |
| print whoami(), hex(ret_ad), '(', hex(arg_addr), arg_c, arg_size, ')' | |
| vm_set_mem(arg_addr, chr(arg_c)*arg_size) | |
| regs = vm_get_gpreg() | |
| regs['eip'] = ret_ad | |
| regs['eax'] = arg_addr | |
| vm_set_gpreg(regs) | |
| def xxx_memcpy(): | |
| ret_ad = vm_pop_uint32_t() | |
| dst = get_dw_stack(0) | |
| src = get_dw_stack(4) | |
| size = get_dw_stack(8) | |
| print whoami(), hex(ret_ad), '(', hex(dst), hex(src), hex(size), ')' | |
| s = vm_get_str(src, size) | |
| vm_set_mem(dst, s) | |
| regs = vm_get_gpreg() | |
| regs['eip'] = ret_ad | |
| regs['eax'] = dst | |
| vm_set_gpreg(regs) | |
| def xxx_memcmp(): | |
| ret_ad = vm_pop_uint32_t() | |
| s1 = get_dw_stack(0) | |
| s2 = get_dw_stack(4) | |
| size = get_dw_stack(8) | |
| print whoami(), hex(ret_ad), '(', hex(s1), hex(s2), hex(size), ')' | |
| s1s = vm_get_str(s1, size) | |
| s2s = vm_get_str(s2, size) | |
| print repr(s1s) | |
| print repr(s2s) | |
| regs = vm_get_gpreg() | |
| regs['eip'] = ret_ad | |
| regs['eax'] = cmp(s1s, s2s) | |
| vm_set_gpreg(regs) | |
| def xxx_printf(): | |
| ret_ad = vm_pop_uint32_t() | |
| fmt_p = get_dw_stack(0) | |
| fmt_s = get_str_ansi(fmt_p) | |
| print whoami(), hex(ret_ad), '(', repr(fmt_s), ')' | |
| regs = vm_get_gpreg() | |
| regs['eip'] = ret_ad | |
| regs['eax'] = 0 | |
| vm_set_gpreg(regs) | |
| def xxx_socket(): | |
| ret_ad = vm_pop_uint32_t() | |
| arg_domain = get_dw_stack(0) | |
| arg_type = get_dw_stack(4) | |
| arg_proto = get_dw_stack(8) | |
| print whoami(), hex(ret_ad), '(', arg_domain, arg_type, arg_proto,')' | |
| fd = fd_gen.next() | |
| regs = vm_get_gpreg() | |
| regs['eip'] = ret_ad | |
| #regs['eax'] = fd | |
| # XXX DANGEROUS | |
| s = socket.socket(arg_domain, arg_type, arg_proto) | |
| socket_pool[s.fileno()] = s | |
| regs['eax'] = s.fileno() | |
| vm_set_gpreg(regs) | |
| def xxx_htonl(): | |
| ret_ad = vm_pop_uint32_t() | |
| arg_dw = get_dw_stack(0) | |
| print whoami(), hex(ret_ad), '(', arg_dw,')' | |
| regs = vm_get_gpreg() | |
| regs['eip'] = ret_ad | |
| regs['eax'] = socket.htonl(arg_dw) | |
| vm_set_gpreg(regs) | |
| def xxx_htons(): | |
| ret_ad = vm_pop_uint32_t() | |
| arg_dw = get_dw_stack(0) | |
| print whoami(), hex(ret_ad), '(', arg_dw,')' | |
| regs = vm_get_gpreg() | |
| regs['eip'] = ret_ad | |
| regs['eax'] = socket.htons(arg_dw) | |
| vm_set_gpreg(regs) | |
| def xxx_bind(): | |
| ret_ad = vm_pop_uint32_t() | |
| arg_sockfd = get_dw_stack(0) | |
| arg_addr = get_dw_stack(4) | |
| arg_addrlen = get_dw_stack(8) | |
| print whoami(), hex(ret_ad), '(', arg_sockfd, hex(arg_addr), arg_addrlen,')' | |
| addr_s = vm_get_str(arg_addr, arg_addrlen) | |
| print repr(addr_s) | |
| sin_f, sin_port, sin_addr = struct.unpack('>HHL', addr_s[:8]) | |
| print repr(sin_f), repr(sin_port), repr(sin_addr) | |
| # XXX | |
| #sin_port = 2222 | |
| socket_pool[arg_sockfd].bind(('', sin_port)) | |
| regs = vm_get_gpreg() | |
| regs['eip'] = ret_ad | |
| regs['eax'] = 0 | |
| vm_set_gpreg(regs) | |
| def xxx_listen(): | |
| ret_ad = vm_pop_uint32_t() | |
| arg_sockfd = get_dw_stack(0) | |
| arg_backlog = get_dw_stack(4) | |
| print whoami(), hex(ret_ad), '(', arg_sockfd, arg_backlog, ')' | |
| socket_pool[arg_sockfd].listen(arg_backlog) | |
| regs = vm_get_gpreg() | |
| regs['eip'] = ret_ad | |
| regs['eax'] = 0 | |
| vm_set_gpreg(regs) | |
| def xxx_accept(): | |
| ret_ad = vm_pop_uint32_t() | |
| arg_sockfd = get_dw_stack(0) | |
| arg_addr = get_dw_stack(4) | |
| arg_addrlen = get_dw_stack(8) | |
| print whoami(), hex(ret_ad), '(', arg_sockfd, hex(arg_addr), arg_addrlen, ')' | |
| conn, addr = socket_pool[arg_sockfd].accept() | |
| socket_pool[conn.fileno()] = conn | |
| print 'ACCEPT', conn, addr | |
| regs = vm_get_gpreg() | |
| regs['eip'] = ret_ad | |
| regs['eax'] = conn.fileno() | |
| vm_set_gpreg(regs) | |
| def xxx_puts(): | |
| ret_ad = vm_pop_uint32_t() | |
| arg_s = get_dw_stack(0) | |
| print whoami(), hex(ret_ad), '(', arg_s, ')' | |
| s = get_str_ansi(arg_s) | |
| print 'PUTS' | |
| print s | |
| regs = vm_get_gpreg() | |
| regs['eip'] = ret_ad | |
| regs['eax'] = 0 | |
| vm_set_gpreg(regs) | |
| def xxx_putchar(): | |
| ret_ad = vm_pop_uint32_t() | |
| arg_c = get_dw_stack(0) | |
| print whoami(), hex(ret_ad), '(', arg_c, ')' | |
| print chr(arg_c&0xff) | |
| regs = vm_get_gpreg() | |
| regs['eip'] = ret_ad | |
| regs['eax'] = 0 | |
| vm_set_gpreg(regs) | |
| def xxx__IO_putc(): | |
| ret_ad = vm_pop_uint32_t() | |
| arg_c = get_dw_stack(0) | |
| arg_stream = get_dw_stack(4) | |
| print whoami(), hex(ret_ad), '(', hex(arg_stream), hex(arg_c), ')' | |
| socket_pool[arg_stream].write(chr(arg_c&0xFF)) | |
| regs = vm_get_gpreg() | |
| regs['eip'] = ret_ad | |
| regs['eax'] = 0 | |
| vm_set_gpreg(regs) | |
| def xxx_recv(): | |
| ret_ad = vm_pop_uint32_t() | |
| arg_sockfd = get_dw_stack(0) | |
| arg_buf = get_dw_stack(4) | |
| arg_len = get_dw_stack(8) | |
| arg_flags = get_dw_stack(12) | |
| print whoami(), hex(ret_ad), '(', arg_sockfd, arg_buf, arg_len, arg_sockfd, ')' | |
| buf = socket_pool[arg_sockfd].recv(arg_len) | |
| print 'RECV', repr(buf) | |
| vm_set_mem(arg_buf, buf) | |
| regs = vm_get_gpreg() | |
| regs['eip'] = ret_ad | |
| if buf: | |
| regs['eax'] = len(buf) | |
| else: | |
| regs['eax'] = -1 | |
| vm_set_gpreg(regs) | |
| def xxx_send(): | |
| ret_ad = vm_pop_uint32_t() | |
| arg_sockfd = get_dw_stack(0) | |
| arg_buf = get_dw_stack(4) | |
| arg_len = get_dw_stack(8) | |
| arg_flags = get_dw_stack(12) | |
| print whoami(), hex(ret_ad), '(', arg_sockfd, arg_buf, arg_len, arg_sockfd, ')' | |
| buf = vm_get_str(arg_buf, arg_len) | |
| try: | |
| socket_pool[arg_sockfd].send(buf) | |
| except: | |
| print 'send fail' | |
| buf = "" | |
| print 'SEND', repr(buf) | |
| regs = vm_get_gpreg() | |
| regs['eip'] = ret_ad | |
| regs['eax'] = len(buf) | |
| vm_set_gpreg(regs) | |
| def xxx_close(): | |
| ret_ad = vm_pop_uint32_t() | |
| arg_sockfd = get_dw_stack(0) | |
| print whoami(), hex(ret_ad), '(', arg_sockfd, ')' | |
| socket_pool[arg_sockfd].close() | |
| print 'close', repr(arg_sockfd) | |
| regs = vm_get_gpreg() | |
| regs['eip'] = ret_ad | |
| regs['eax'] = 0 | |
| vm_set_gpreg(regs) | |
| def xxx_signal(): | |
| ret_ad = vm_pop_uint32_t() | |
| arg_signum = get_dw_stack(0) | |
| arg_sigh = get_dw_stack(4) | |
| print whoami(), hex(ret_ad), '(', arg_signum, hex(arg_sigh), ')' | |
| # XXX todo | |
| regs = vm_get_gpreg() | |
| regs['eip'] = ret_ad | |
| regs['eax'] = 0 | |
| vm_set_gpreg(regs) | |
| def xxx_setsockopt(): | |
| ret_ad = vm_pop_uint32_t() | |
| arg_sockfd = get_dw_stack(0) | |
| arg_level = get_dw_stack(4) | |
| arg_optname = get_dw_stack(8) | |
| arg_optval = get_dw_stack(12) | |
| arg_optlen = get_dw_stack(16) | |
| print whoami(), hex(ret_ad), '(', arg_sockfd, hex(arg_level), arg_optname, hex(arg_optval), arg_optlen, ')' | |
| opt_val = vm_get_str(arg_optval, arg_optlen) | |
| print repr(opt_val) | |
| # Translation between C and python values | |
| # #define SOL_SOCKET 0xffff | |
| dct_level = {0xffff:1, 1:1} | |
| dct_argname = {4:2, 2:2} | |
| arg_level = dct_level[arg_level] | |
| arg_optname = dct_argname[arg_optname] | |
| print repr(arg_level), repr(arg_optname), repr(opt_val) | |
| socket_pool[arg_sockfd].setsockopt(arg_level, arg_optname, opt_val) | |
| # XXX todo | |
| regs = vm_get_gpreg() | |
| regs['eip'] = ret_ad | |
| regs['eax'] = 0 | |
| vm_set_gpreg(regs) | |
| def xxx_getpwnam(): | |
| ret_ad = vm_pop_uint32_t() | |
| arg_name = get_dw_stack(0) | |
| print whoami(), hex(ret_ad), '(', hex(arg_name), ')' | |
| s = get_str_ansi(arg_name) | |
| print repr(s) | |
| # create fake struct | |
| name = s | |
| password = "pwd_"+name | |
| rname = name | |
| udir = "/home/"+name | |
| ushell = "shell_"+name | |
| ad = vm_get_memory_page_max_address() | |
| vm_add_memory_page(ad, PAGE_READ|PAGE_WRITE, 0x1000*"\x00") | |
| ad = (ad+0xfff) & 0xfffff000 | |
| s = struct.pack('IIIIIII', | |
| ad+0x100, | |
| ad+0x200, | |
| 1337, | |
| 1337, | |
| ad+0x300, | |
| ad+0x400, | |
| ad+0x500) | |
| s = struct.pack('256s256s256s256s256s256s', s, name, password, rname, udir, ushell) | |
| print repr(s) | |
| vm_set_mem(ad, s) | |
| regs = vm_get_gpreg() | |
| regs['eip'] = ret_ad | |
| regs['eax'] = ad | |
| vm_set_gpreg(regs) | |
| def xxx_getuid(): | |
| ret_ad = vm_pop_uint32_t() | |
| print whoami(), hex(ret_ad), '(', ')' | |
| regs = vm_get_gpreg() | |
| regs['eip'] = ret_ad | |
| regs['eax'] = 1337 | |
| vm_set_gpreg(regs) | |
| def xxx_getgid(): | |
| ret_ad = vm_pop_uint32_t() | |
| print whoami(), hex(ret_ad), '(', ')' | |
| regs = vm_get_gpreg() | |
| regs['eip'] = ret_ad | |
| regs['eax'] = 1337 | |
| vm_set_gpreg(regs) | |
| def xxx_initgroups(): | |
| ret_ad = vm_pop_uint32_t() | |
| arg_name = get_dw_stack(0) | |
| arg_group = get_dw_stack(4) | |
| print whoami(), hex(ret_ad), '(', hex(arg_name), arg_group, ')' | |
| s = get_str_ansi(arg_name) | |
| print repr(s) | |
| # XXX todo | |
| regs = vm_get_gpreg() | |
| regs['eip'] = ret_ad | |
| regs['eax'] = 0 | |
| vm_set_gpreg(regs) | |
| def xxx_setresgid(): | |
| ret_ad = vm_pop_uint32_t() | |
| arg_ruid = get_dw_stack(0) | |
| arg_euid = get_dw_stack(4) | |
| arg_suid = get_dw_stack(8) | |
| print whoami(), hex(ret_ad), '(', arg_ruid, arg_euid, arg_suid, ')' | |
| # XXX todo | |
| regs = vm_get_gpreg() | |
| regs['eip'] = ret_ad | |
| regs['eax'] = 0 | |
| vm_set_gpreg(regs) | |
| def xxx_setresuid(): | |
| ret_ad = vm_pop_uint32_t() | |
| arg_ruid = get_dw_stack(0) | |
| arg_euid = get_dw_stack(4) | |
| arg_suid = get_dw_stack(8) | |
| print whoami(), hex(ret_ad), '(', arg_ruid, arg_euid, arg_suid, ')' | |
| # XXX todo | |
| regs = vm_get_gpreg() | |
| regs['eip'] = ret_ad | |
| regs['eax'] = 0 | |
| vm_set_gpreg(regs) | |
| def xxx_getegid(): | |
| ret_ad = vm_pop_uint32_t() | |
| print whoami(), hex(ret_ad), '(', ')' | |
| regs = vm_get_gpreg() | |
| regs['eip'] = ret_ad | |
| regs['eax'] = 1337 | |
| vm_set_gpreg(regs) | |
| def xxx_geteuid(): | |
| ret_ad = vm_pop_uint32_t() | |
| print whoami(), hex(ret_ad), '(', ')' | |
| regs = vm_get_gpreg() | |
| regs['eip'] = ret_ad | |
| regs['eax'] = 1337 | |
| vm_set_gpreg(regs) | |
| def xxx_chdir(): | |
| ret_ad = vm_pop_uint32_t() | |
| arg_path = get_dw_stack(0) | |
| print whoami(), hex(ret_ad), '(', hex(arg_path), ')' | |
| if arg_path: | |
| s = get_str_ansi(arg_path) | |
| else: | |
| s = "default_path" | |
| print repr(s) | |
| regs = vm_get_gpreg() | |
| regs['eip'] = ret_ad | |
| regs['eax'] = 0 | |
| vm_set_gpreg(regs) | |
| def xxx_time(): | |
| ret_ad = vm_pop_uint32_t() | |
| arg_time = get_dw_stack(0) | |
| print whoami(), hex(ret_ad), '(', hex(arg_time), ')' | |
| t = int(time.time()) | |
| if arg_time: | |
| vm_set_mem(arg_time, pdw(t)) | |
| regs = vm_get_gpreg() | |
| regs['eip'] = ret_ad | |
| regs['eax'] = t | |
| vm_set_gpreg(regs) | |
| def xxx_ctime(): | |
| global ctime_str | |
| ret_ad = vm_pop_uint32_t() | |
| arg_time = get_dw_stack(0) | |
| print whoami(), hex(ret_ad), '(', hex(arg_time), ')' | |
| if not ctime_str: | |
| ad = vm_get_memory_page_max_address() | |
| vm_add_memory_page(ad, PAGE_READ|PAGE_WRITE, 0x1000*"\x00") | |
| ctime_str = ad | |
| t = vm_get_str(arg_time, 4) | |
| t = updw(t) | |
| print hex(t) | |
| s = time.ctime(t) | |
| vm_set_mem(ctime_str, s) | |
| regs = vm_get_gpreg() | |
| regs['eip'] = ret_ad | |
| regs['eax'] = ctime_str | |
| vm_set_gpreg(regs) | |
| def xxx_srand(): | |
| ret_ad = vm_pop_uint32_t() | |
| arg_seed = get_dw_stack(0) | |
| print whoami(), hex(ret_ad), '(', hex(arg_seed), ')' | |
| random.seed(arg_seed) | |
| regs = vm_get_gpreg() | |
| regs['eip'] = ret_ad | |
| regs['eax'] = 0 | |
| vm_set_gpreg(regs) | |
| def xxx_rand(): | |
| ret_ad = vm_pop_uint32_t() | |
| print whoami(), hex(ret_ad), '(', ')' | |
| regs = vm_get_gpreg() | |
| regs['eip'] = ret_ad | |
| regs['eax'] = random.randint(0, 0xffffffff) | |
| vm_set_gpreg(regs) | |
| def xxx_fork(): | |
| ret_ad = vm_pop_uint32_t() | |
| print whoami(), hex(ret_ad), '(', ')' | |
| ret = os.fork() | |
| #ret= 0 | |
| print 'FORK', ret | |
| regs = vm_get_gpreg() | |
| regs['eip'] = ret_ad | |
| regs['eax'] = ret | |
| vm_set_gpreg(regs) | |
| def xxx_strncpy(): | |
| ret_ad = vm_pop_uint32_t() | |
| arg_dst = get_dw_stack(0) | |
| arg_src = get_dw_stack(4) | |
| arg_n = get_dw_stack(8) | |
| print whoami(), hex(ret_ad), '(', hex(arg_dst), hex(arg_src), arg_n, ')' | |
| src = get_str_ansi(arg_src, arg_n) | |
| src = (src+'\x00'*arg_n)[:arg_n] | |
| vm_set_mem(arg_dst, src) | |
| regs = vm_get_gpreg() | |
| regs['eip'] = ret_ad | |
| regs['eax'] = arg_dst | |
| vm_set_gpreg(regs) | |
| def xxx_strlen(): | |
| ret_ad = vm_pop_uint32_t() | |
| arg_src = get_dw_stack(0) | |
| print whoami(), hex(ret_ad), '(', hex(arg_src), ')' | |
| src = get_str_ansi(arg_src) | |
| print repr(src) | |
| regs = vm_get_gpreg() | |
| regs['eip'] = ret_ad | |
| regs['eax'] = len(src) | |
| vm_set_gpreg(regs) | |
| def xxx_read(): | |
| ret_ad = vm_pop_uint32_t() | |
| arg_fd = get_dw_stack(0) | |
| arg_buf = get_dw_stack(4) | |
| arg_len = get_dw_stack(8) | |
| print whoami(), hex(ret_ad), '(', arg_fd, arg_buf, arg_len, ')' | |
| buf = os.read(arg_fd, arg_len) | |
| print 'RECV', repr(buf) | |
| vm_set_mem(arg_buf, buf) | |
| regs = vm_get_gpreg() | |
| regs['eip'] = ret_ad | |
| regs['eax'] = len(buf) | |
| vm_set_gpreg(regs) | |
| def xxx_strcmp(): | |
| ret_ad = vm_pop_uint32_t() | |
| arg_s1 = get_dw_stack(0) | |
| arg_s2 = get_dw_stack(4) | |
| print whoami(), hex(ret_ad), '(', hex(arg_s1), hex(arg_s2), ')' | |
| s1 = get_str_ansi(arg_s1) | |
| s2 = get_str_ansi(arg_s2) | |
| print repr(s1), repr(s2) | |
| if s1 == s2: | |
| ret = 0 | |
| elif s1 > s2: | |
| ret = 1 | |
| else: | |
| ret = -1 | |
| regs = vm_get_gpreg() | |
| regs['eip'] = ret_ad | |
| regs['eax'] = ret | |
| vm_set_gpreg(regs) | |
| def xxx_exit(): | |
| ret_ad = vm_pop_uint32_t() | |
| arg_code = get_dw_stack(0) | |
| print whoami(), hex(ret_ad), '(', hex(arg_code), ')' | |
| sys.exit(arg_code) | |
| def xxx__exit(): | |
| xxx_exit() | |
| def xxx_fdopen(): | |
| ret_ad = vm_pop_uint32_t() | |
| arg_fd = get_dw_stack(0) | |
| arg_mode = get_dw_stack(4) | |
| print whoami(), hex(ret_ad), '(', arg_fd, hex(arg_mode), ')' | |
| m = get_str_ansi(arg_mode) | |
| print repr(m) | |
| s = os.fdopen(arg_fd, m, 0) | |
| socket_pool[id(s)] = s | |
| regs = vm_get_gpreg() | |
| regs['eip'] = ret_ad | |
| regs['eax'] = id(s) | |
| vm_set_gpreg(regs) | |
| def xxx_fclose(): | |
| ret_ad = vm_pop_uint32_t() | |
| arg_fd = get_dw_stack(0) | |
| print whoami(), hex(ret_ad), '(', arg_fd, ')' | |
| socket_pool[arg_fd].close() | |
| regs = vm_get_gpreg() | |
| regs['eip'] = ret_ad | |
| regs['eax'] = 0 | |
| vm_set_gpreg(regs) | |
| def parse_fmt(s): | |
| fmt = s[:]+"\x00" | |
| out = [] | |
| i = 0 | |
| while i < len(fmt): | |
| c = fmt[i] | |
| if c != "%": | |
| i+=1 | |
| continue | |
| if fmt[i+1] == "%": | |
| i+=2 | |
| continue | |
| j = 0 | |
| i+=1 | |
| while fmt[i+j] in "0123456789$.": | |
| j+=1 | |
| if fmt[i+j] in ['l']: | |
| j +=1 | |
| if fmt[i+j] == "h": | |
| x = fmt[i+j:i+j+2] | |
| else: | |
| x = fmt[i+j] | |
| i+=j | |
| out.append(x) | |
| return out | |
| def xxx_fprintf(): | |
| ret_ad = vm_pop_uint32_t() | |
| arg_stream = get_dw_stack(0) | |
| arg_fmt = get_dw_stack(4) | |
| print whoami(), hex(ret_ad), '(', arg_stream, hex(arg_fmt), ')' | |
| s = get_str_ansi(arg_fmt) | |
| print repr(s) | |
| fmt_a = parse_fmt(s) | |
| offset = 8 | |
| args = [] | |
| for i, x in enumerate(fmt_a): | |
| a = get_dw_stack(offset+4*i) | |
| if x == "s": | |
| a = get_str_ansi(a) | |
| args.append(a) | |
| print repr(s), repr(args) | |
| oo = s%(tuple(args)) | |
| print repr(oo) | |
| socket_pool[arg_stream].write(oo) | |
| regs = vm_get_gpreg() | |
| regs['eip'] = ret_ad | |
| regs['eax'] = len(oo) | |
| vm_set_gpreg(regs) | |
| def xxx_snprintf(): | |
| ret_ad = vm_pop_uint32_t() | |
| dst = get_dw_stack(0) | |
| size = get_dw_stack(4) | |
| arg_fmt = get_dw_stack(8) | |
| print whoami(), hex(ret_ad), '(', hex(dst), hex(size), hex(arg_fmt), ')' | |
| s = get_str_ansi(arg_fmt) | |
| fmt_a = parse_fmt(s) | |
| offset = 0xc | |
| args = [] | |
| for i, x in enumerate(fmt_a): | |
| a = get_dw_stack(offset+4*i) | |
| if x == "s": | |
| a = get_str_ansi(a) | |
| args.append(a) | |
| print repr(s), repr(args) | |
| oo = s%(tuple(args)) | |
| print repr(oo) | |
| vm_set_mem(dst, oo) | |
| regs = vm_get_gpreg() | |
| regs['eip'] = ret_ad | |
| regs['eax'] = len(oo) | |
| vm_set_gpreg(regs) | |
| def xxx_isprint(): | |
| ret_ad = vm_pop_uint32_t() | |
| c = get_dw_stack(0) | |
| print whoami(), hex(ret_ad), '(', hex(c), ')' | |
| if chr(c&0xFF) in string.printable: | |
| ret = 1 | |
| else: | |
| ret = 0 | |
| regs = vm_get_gpreg() | |
| regs['eip'] = ret_ad | |
| regs['eax'] = ret | |
| vm_set_gpreg(regs) | |
| def xxx_fgets(): | |
| ret_ad = vm_pop_uint32_t() | |
| arg_buf = get_dw_stack(0) | |
| arg_size = get_dw_stack(4) | |
| arg_stream = get_dw_stack(8) | |
| print whoami(), hex(ret_ad), '(', hex(arg_buf), arg_size, arg_stream, ')' | |
| buf = "" | |
| while len(buf) < arg_size-1: | |
| buf += socket_pool[arg_stream].read(1) | |
| if not buf: | |
| break | |
| if "\n" in buf: | |
| break | |
| if "\x00" in buf: | |
| break | |
| if buf: | |
| buf += "\x00" | |
| print repr(buf) | |
| vm_set_mem(arg_buf, buf) | |
| if not buf: | |
| arg_buf = 0 | |
| regs = vm_get_gpreg() | |
| regs['eip'] = ret_ad | |
| regs['eax'] = arg_buf | |
| vm_set_gpreg(regs) | |
| def xxx_fwrite(): | |
| ret_ad = vm_pop_uint32_t() | |
| arg_buf = get_dw_stack(0) | |
| arg_size = get_dw_stack(4) | |
| arg_nmemb = get_dw_stack(8) | |
| arg_stream = get_dw_stack(12) | |
| print whoami(), hex(ret_ad), '(', hex(arg_buf), arg_size, arg_nmemb, arg_stream, ')' | |
| buf = vm_get_str(arg_buf, arg_size*arg_nmemb) | |
| print repr(buf) | |
| socket_pool[arg_stream].write(buf) | |
| """ | |
| except: | |
| print "err in write" | |
| buf = "" | |
| """ | |
| regs = vm_get_gpreg() | |
| regs['eip'] = ret_ad | |
| regs['eax'] = len(buf) | |
| vm_set_gpreg(regs) | |
| def xxx_fflush(): | |
| ret_ad = vm_pop_uint32_t() | |
| arg_stream = get_dw_stack(0) | |
| print whoami(), hex(ret_ad), '(', arg_stream, ')' | |
| socket_pool[arg_stream].flush() | |
| regs = vm_get_gpreg() | |
| regs['eip'] = ret_ad | |
| regs['eax'] = 0 | |
| vm_set_gpreg(regs) | |
| def xxx_malloc(): | |
| ret_ad = vm_pop_uint32_t() | |
| arg_size = get_dw_stack(0) | |
| print whoami(), hex(ret_ad), '(', hex(arg_size), ')' | |
| ad = vm_get_memory_page_max_address() | |
| ad = (ad+0xfff) & 0xfffff000 | |
| vm_add_memory_page(ad, PAGE_READ|PAGE_WRITE, arg_size*"\x00") | |
| regs = vm_get_gpreg() | |
| regs['eip'] = ret_ad | |
| regs['eax'] = ad | |
| vm_set_gpreg(regs) | |
| def xxx_calloc(): | |
| xxx_malloc() | |
| def xxx_free(): | |
| ret_ad = vm_pop_uint32_t() | |
| ptr = get_dw_stack(0) | |
| print whoami(), hex(ret_ad), '(', hex(ptr), ')' | |
| regs = vm_get_gpreg() | |
| regs['eip'] = ret_ad | |
| regs['eax'] = 0 | |
| vm_set_gpreg(regs) | |
| def xxx_bzero(): | |
| ret_ad = vm_pop_uint32_t() | |
| arg_addr = get_dw_stack(0) | |
| arg_size = get_dw_stack(4) | |
| print whoami(), hex(ret_ad), '(', hex(arg_addr), arg_size, ')' | |
| vm_set_mem(arg_addr, "\x00"*arg_size) | |
| regs = vm_get_gpreg() | |
| regs['eip'] = ret_ad | |
| regs['eax'] = 0 | |
| vm_set_gpreg(regs) | |
| def xxx_fopen(): | |
| ret_ad = vm_pop_uint32_t() | |
| arg_path = get_dw_stack(0) | |
| arg_mode = get_dw_stack(4) | |
| print whoami(), hex(ret_ad), '(', arg_path, hex(arg_mode), ')' | |
| path = get_str_ansi(arg_path) | |
| m = get_str_ansi(arg_mode) | |
| print repr(path), repr(m) | |
| path = "/home/serpilliere/projet/pelogger/user.db" | |
| try: | |
| s = open(path, m, 0) | |
| socket_pool[id(s)] = s | |
| s= id(s) | |
| except: | |
| s = 0 | |
| regs = vm_get_gpreg() | |
| regs['eip'] = ret_ad | |
| regs['eax'] = s | |
| vm_set_gpreg(regs) | |
| def xxx_fread(): | |
| ret_ad = vm_pop_uint32_t() | |
| arg_buf = get_dw_stack(0) | |
| arg_size = get_dw_stack(4) | |
| arg_nmemb = get_dw_stack(8) | |
| arg_stream = get_dw_stack(12) | |
| print whoami(), hex(ret_ad), '(', hex(arg_buf), hex(arg_size), hex(arg_nmemb), hex(arg_stream), ')' | |
| buf = socket_pool[arg_stream].read(arg_size*arg_nmemb) | |
| print repr(buf) | |
| print "ret", arg_nmemb | |
| vm_set_mem(arg_buf, buf) | |
| regs = vm_get_gpreg() | |
| regs['eip'] = ret_ad | |
| regs['eax'] = arg_nmemb | |
| vm_set_gpreg(regs) | |
| def xxx_fseek(): | |
| ret_ad = vm_pop_uint32_t() | |
| stream = get_dw_stack(0) | |
| offset = get_dw_stack(4) | |
| whence = get_dw_stack(8) | |
| print whoami(), hex(ret_ad), '(', hex(stream), hex(offset), hex(whence), ')' | |
| buf = socket_pool[stream].seek(offset, whence ) | |
| regs = vm_get_gpreg() | |
| regs['eip'] = ret_ad | |
| regs['eax'] = 0 | |
| vm_set_gpreg(regs) | |
| def xxx_rewind(): | |
| ret_ad = vm_pop_uint32_t() | |
| arg_stream = get_dw_stack(0) | |
| print whoami(), hex(ret_ad), '(', hex(arg_stream), ')' | |
| socket_pool[arg_stream].seek(0) | |
| regs = vm_get_gpreg() | |
| regs['eip'] = ret_ad | |
| regs['eax'] = 0 | |
| vm_set_gpreg(regs) | |
| def xxx_atoi(): | |
| ret_ad = vm_pop_uint32_t() | |
| arg_nptr = get_dw_stack(0) | |
| print whoami(), hex(ret_ad), '(', arg_nptr, ')' | |
| buf = get_str_ansi(arg_nptr) | |
| print repr(buf) | |
| i = int(buf) | |
| print i | |
| regs = vm_get_gpreg() | |
| regs['eip'] = ret_ad | |
| regs['eax'] = i | |
| vm_set_gpreg(regs) | |
| def xxx_strcpy(): | |
| ret_ad = vm_pop_uint32_t() | |
| arg_dst = get_dw_stack(0) | |
| arg_src = get_dw_stack(4) | |
| print whoami(), hex(ret_ad), '(', hex(arg_dst), hex(arg_src), ')' | |
| src = get_str_ansi(arg_src) | |
| vm_set_mem(arg_dst, src+"\x00") | |
| regs = vm_get_gpreg() | |
| regs['eip'] = ret_ad | |
| regs['eax'] = arg_dst | |
| vm_set_gpreg(regs) | |
| def my_vprintf(arg_fmt, arg_ap): | |
| fmt = get_str_ansi(arg_fmt) | |
| #print repr(fmt) | |
| fmt_a = parse_fmt(fmt) | |
| args = [] | |
| for i, x in enumerate(fmt_a): | |
| a = updw(vm_get_str(arg_ap+4*i, 4)) | |
| if x == "s": | |
| a = get_str_ansi(a) | |
| args.append(a) | |
| s = fmt%(tuple(args))+"\x00" | |
| #print repr(s) | |
| return s | |
| def xxx_vfprintf(): | |
| ret_ad = vm_pop_uint32_t() | |
| arg_stream = get_dw_stack(0) | |
| size = get_dw_stack(4) | |
| arg_fmt = get_dw_stack(8) | |
| arg_ap = get_dw_stack(0xc) | |
| print whoami(), hex(ret_ad), '(', hex(arg_stream), hex(size), hex(arg_fmt), hex(arg_ap), ')' | |
| s = my_vprintf(arg_fmt, arg_ap) | |
| ad = vm_get_memory_page_max_address() | |
| ad = (ad+0xfff) & 0xfffff000 | |
| socket_pool[arg_stream].write(s) | |
| regs = vm_get_gpreg() | |
| regs['eip'] = ret_ad | |
| regs['eax'] = len(s) | |
| vm_set_gpreg(regs) | |
| def xxx_vasprintf(): | |
| ret_ad = vm_pop_uint32_t() | |
| arg_strp = get_dw_stack(0) | |
| arg_fmt = get_dw_stack(4) | |
| arg_ap = get_dw_stack(8) | |
| print whoami(), hex(ret_ad), '(', hex(arg_strp), hex(arg_fmt), hex(arg_ap), ')' | |
| s = my_vprintf(arg_fmt, arg_ap) | |
| print repr(s) | |
| ad = vm_get_memory_page_max_address() | |
| ad = (ad+0xfff) & 0xfffff000 | |
| vm_add_memory_page(ad, PAGE_READ|PAGE_WRITE, (len(s)+1)*"\x00") | |
| vm_set_mem(arg_strp, pdw(ad)) | |
| vm_set_mem(ad, s) | |
| regs = vm_get_gpreg() | |
| regs['eip'] = ret_ad | |
| regs['eax'] = len(fmt) | |
| vm_set_gpreg(regs) | |
| def xxx_sprintf(): | |
| ret_ad = vm_pop_uint32_t() | |
| arg_str = get_dw_stack(0) | |
| arg_fmt = get_dw_stack(4) | |
| print whoami(), hex(ret_ad), '(', hex(arg_str), hex(arg_fmt), ')' | |
| s = get_str_ansi(arg_fmt) | |
| print repr(s) | |
| fmt_a = parse_fmt(s) | |
| offset = 8 | |
| args = [] | |
| for i, x in enumerate(fmt_a): | |
| a = get_dw_stack(offset+4*i) | |
| if x == "s": | |
| a = get_str_ansi(a) | |
| args.append(a) | |
| print repr(s), repr(args) | |
| oo = s%(tuple(args)) | |
| print repr(oo) | |
| vm_set_mem(arg_str, oo+"\x00") | |
| regs = vm_get_gpreg() | |
| regs['eip'] = ret_ad | |
| regs['eax'] = len(oo) | |
| vm_set_gpreg(regs) | |
| def xxx_strcat(): | |
| ret_ad = vm_pop_uint32_t() | |
| arg_dst = get_dw_stack(0) | |
| arg_src = get_dw_stack(4) | |
| print whoami(), hex(ret_ad), '(', hex(arg_dst), hex(arg_src), ')' | |
| src = get_str_ansi(arg_src) | |
| dst = get_str_ansi(arg_dst) | |
| print repr(dst), repr(src) | |
| vm_set_mem(arg_dst, dst+src+'\x00') | |
| regs = vm_get_gpreg() | |
| regs['eip'] = ret_ad | |
| regs['eax'] = arg_dst | |
| vm_set_gpreg(regs) | |
| def xxx_strncmp(): | |
| ret_ad = vm_pop_uint32_t() | |
| arg_s1 = get_dw_stack(0) | |
| arg_s2 = get_dw_stack(4) | |
| arg_n = get_dw_stack(8) | |
| print whoami(), hex(ret_ad), '(', hex(arg_s1), hex(arg_s2), arg_n, ')' | |
| s1 = get_str_ansi(arg_s1, arg_n) | |
| s2 = get_str_ansi(arg_s2, arg_n) | |
| print repr(s1), repr(s2) | |
| if s1 == s2: | |
| ret = 0 | |
| elif s1 > s2: | |
| ret = 1 | |
| else: | |
| ret = -1 | |
| regs = vm_get_gpreg() | |
| regs['eip'] = ret_ad | |
| regs['eax'] = ret | |
| vm_set_gpreg(regs) |
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