在fasm或nasm中阅读网页的源代码
read source of a webpage in fasm or nasm
我有这个c++代码来读取一个网页的源代码。
#include "stdafx.h"
#include <winsock2.h>
#include <windows.h>
#include <iostream>
#include <fstream>
#pragma comment(lib,"ws2_32.lib")
using namespace std;
int main(){
WSADATA wsaData;
if (WSAStartup(MAKEWORD(2, 2), &wsaData) != 0) {
cout << "WSAStartup failed.n";
system("pause");
return 1;
}
SOCKET Socket = socket(AF_INET, SOCK_STREAM, IPPROTO_TCP);
struct hostent *host;
host = gethostbyname("www.last.fm");
SOCKADDR_IN SockAddr;
SockAddr.sin_port = htons(80);
SockAddr.sin_family = AF_INET;
SockAddr.sin_addr.s_addr = *((unsigned long*)host->h_addr);
cout << "Connecting...n";
if (connect(Socket, (SOCKADDR*)(&SockAddr), sizeof(SockAddr)) != 0){
cout << "Could not connect";
system("pause");
return 1;
}
cout << "Connected.n";
send(Socket, "GET /music/Taylor+swift/+albums?order=reach&page=1 HTTP/1.1rnHost: www.last.fmrnConnection: closernrn", strlen("GET /music/taylor+swift/+albums?order=reach&page=1 HTTP/1.1rnHost: www.cplusplus.comrnConnection: closernrn"), 0);
char buffer[10000];
int nDataLength;
while ((nDataLength = recv(Socket, buffer, 10000, 0)) > 0){
int i = 0;
while (buffer[i] >= 32 || buffer[i] == 'n' || buffer[i] == 'r') {
cout << buffer[i];
i += 1;
}
}
closesocket(Socket);
WSACleanup();
system("pause");
return 0;
}
我试图将其转换为fasm组件，但它不起作用。有人能帮我把它改装成总成吗?谢谢(请注意，我以前从未在asm中使用套接字，所以我不确定此代码是否关闭，我认为它连接，但它给出了一个空白消息框，而不是网页源代码)
format PE GUI 4.0
entry start
include 'FasmINCLUDEwin32ax.inc'
section '.data' data readable writeable
IPPROTO_TCP = 6
wsadata WSADATA
_caption db 'Client application',0
_igang db 'The client has started very well.',13,10,'It is now going to connect to your own computer',0
_hostname db 'Wrong hostname',0
hostname db 'www.lastfm.com',0
hSock dd ?
saddr sockaddr_in
sizesaddr = $-saddr
buffer rb 0x3000
sender db 'GET /music/Taylor+swift/+albums?order=reach&page=1 HTTP/1.1rnHost: www.last.fmrnConnection: closernrn',13,10
rb 0x100
section '.code' code readable executable
start:
invoke WSAStartup,0101h,wsadata ; initialiserer winsock-bibliotek
invoke ws_gethostbyname,hostname
or eax,eax
jz bad_hostname
virtual at eax
.host hostent
end virtual
mov eax,[.host.h_addr_list]
mov eax,[eax]
mov eax,[eax]
mov [saddr.sin_addr],eax
invoke MessageBox,0,_igang,_caption,0
mov al,00
mov ah,80 ; port 80
mov [saddr.sin_port],ax
mov [saddr.sin_family],AF_INET
invoke ws_socket, AF_INET, SOCK_STREAM, IPPROTO_TCP
mov [hSock], eax
xchg eax, esi
invoke ws_connect, esi, saddr, sizesaddr
.if eax = 0
invoke MessageBox,0, "connected", _caption,0
.endif
.if eax <> 0
invoke MessageBox,0, "not connected", _caption,0
.endif
mov ebx, buffer
invoke ws_send,esi,sender,109,0
invoke ws_recv, esi, ebx, 1000, 0
invoke MessageBox,0, buffer, _caption,0
.connectSucceeded:
invoke ws_closesocket,esi
invoke WSACleanup
jmp stopp
bad_hostname:
invoke MessageBox,0,_hostname,_caption,0
jmp stopp
stopp:
invoke ExitProcess,0
section '.idata' import data readable writeable
library kernel,'KERNEL32.DLL',
winsock,'WSOCK32.DLL',
user,'USER32.DLL'
import kernel,
ExitProcess,'ExitProcess'
import winsock,
WSAStartup,'WSAStartup',
ws_socket,'socket',
ws_connect,'connect',
ws_gethostbyname,'gethostbyname',
ws_send,'send',
ws_recv,'recv',
ws_closesocket,'closesocket',
WSACleanup,'WSACleanup'
import user,
MessageBox,'MessageBoxA'
这是我的inet功能，也许会对你有所帮助。
push cookie
push post
push url
push buffer
call connectHTTP
结果放在缓冲区中。功能未优化，但运行稳定。
; ~ - ~ - ~ - ~ - ~ - ~ - ~ - ~ - ~ - ~ - ~ - ~ - ~ - ~ - ~ - ~ - ~ - ~ - ~ - ~ - ~ - ~ - ~ - ~ - ~
;
; inet.asm
;
; HFT -> inet functions
;
; Copyright (C) 2013 Ilya M. Chirkunov (cheebeez@yandex.ru)
;
; - ~ - ~ - ~ - ~ - ~ - ~ - ~ - ~ - ~ - ~ - ~ - ~ - ~ - ~ - ~ - ~ - ~ - ~ - ~ - ~ - ~ - ~ - ~ - ~ -
format ELF
include 'cdecl.inc'
public connectHTTP
extrn gethostbyname
extrn socket
extrn htons
extrn connect
extrn send
extrn recv
extrn close
extrn strcpy2
extrn strcat2
extrn strpos
extrn strlen2
extrn hex2decascii
extrn push_ad
extrn pop_ad
;~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
; С Е К Ц И Я К О Д А
;~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
section '.text' executable
; ------------------------------------- HTTP запрос
proc connectHTTP
call push_ad
pop eax ; сохраняем адрес возврата
pop edi esi ecx edx ; edi - buffer, esi - url, ecx - post, edx - cookie
push eax ; восстанавливаем адрес возврата
; (составляем запрос)
sub esp,10000
mov ebx,esp ; в ebx будем собирать запрос
cmp dword[esi],"http"
jne _not_http
add esi,7 ; убираем "http://"
_not_http:
push szPOST
push ebx
call strcpy2 ; "POST "
cmp ecx,0
jnz _is_post
push szGET
push ebx
call strcpy2 ; "GET "
_is_post:
push szSlash
push ebx
call strcat2 ; "GET /"
push esi
push edi
call strcpy2 ; копируем url в буффер
push szSlash
push edi
call strpos ; ищем URI
cmp eax,-1
je _only_host
mov byte[edi+eax],0 ; в edi - host
add esi,eax ; в esi - uri
inc esi
push esi
push ebx
call strcat2 ; "GET /full_uri HTTP/1.0"
_only_host:
push szHTTP10
push ebx
call strcat2 ; "GET / HTTP/1.0"
push szDA
push ebx
call strcat2 ; "GET / HTTP/1.0",0xD,0xA
push szHost
push ebx
call strcat2 ; "GET / HTTP/1.0",0xD,0xA,"Host: "
push edi
push ebx
call strcat2 ; "GET / HTTP/1.0",0xD,0xA,"Host: sphost.org"
push szDA
push ebx
call strcat2 ; "GET / HTTP/1.0",0xD,0xA,"Host: sphost.org",0xD,0xA
cmp ecx,0
jz _finish_query_string
push szContType
push ebx
call strcat2 ; "POST / HTTP/1.0",0xD,0xA,"Host: sphost.org",0xD,0xA,"Content-Type: application/x-www-form-urlencoded"
push szDA
push ebx
call strcat2 ; "POST / HTTP/1.0",0xD,0xA,"Host: sphost.org",0xD,0xA,"Content-Type: application/x-www-form-urlencoded",0xD,0xA
push szLength
push ebx
call strcat2 ; "POST / HTTP/1.0",0xD,0xA,"Host: sphost.org",0xD,0xA,"Content-Length: "
push ecx
call strlen2
push eax
push szSize
call hex2decascii
push szSize
push ebx
call strcat2 ; "POST / HTTP/1.0",0xD,0xA,"Host: sphost.org",0xD,0xA,"Content-Length: 64"
push szDA
push ebx
call strcat2 ; "POST / HTTP/1.0",0xD,0xA,"Host: sphost.org",0xD,0xA,"Content-Length: 64",0xD,0xA
push szDA
push ebx
call strcat2 ; "POST / HTTP/1.0",0xD,0xA,"Host: sphost.org",0xD,0xA,"Content-Length: 64",0xD,0xA,0xD,0xA
push ecx
push ebx
call strcat2 ; "POST / HTTP/1.0",0xD,0xA,"Host: sphost.org",0xD,0xA,"Content-Length: 64",0xD,0xA,0xD,0xA,"post"
push szDA
push ebx
call strcat2 ; "POST / HTTP/1.0",0xD,0xA,"Host: sphost.org",0xD,0xA,"Content-Length: 64",0xD,0xA,0xD,0xA,"post",0xD,0xA
_finish_query_string:
push szDA
push ebx
call strcat2 ; "GET / HTTP/1.0",0xD,0xA,"Host: sphost.org",0xD,0xA,0xD,0xA
; (отправляем запрос)
ccall gethostbyname, edi
;cmp eax,0
;jz _ret_conHTTP
mov eax,[eax+16]
mov eax,[eax]
mov eax,[eax]
mov dword[sin_addr],eax
ccall socket, 2, 1, 6 ; AF_INET, SOCK_STREAM, IPPROTO_TCP
;cmp eax, -1
;je _ret_conHTTP
mov dword[sockfd],eax
ccall htons, 80
mov word[sin_port],ax
mov word[sin_family],2
ccall connect, dword[sockfd], sin_family, 16
;cmp eax,0
;jnz _ret_conHTTP
push ebx
call strlen2
ccall send, dword[sockfd], ebx, eax, 0
add esp,10000
; (получаем ответ)
_getURL_recv:
ccall recv, dword[sockfd], edi, 1024, 0
add edi,eax
cmp eax,0
jnz _getURL_recv
mov byte[edi],0
ccall close,dword[sockfd]
_ret_conHTTP:
call pop_ad
ret
endp
;~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
; С Е К Ц И Я Д А Н Н Ы Х
;~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
section '.data' writeable
szGET db "GET ", 0
szPOST db "POST ", 0
szSlash db "/",0
szHTTP10 db " HTTP/1.0",0
szDA db 0xD,0xA,0
szHost db "Host: ", 0
szContType db "Content-Type: application/x-www-form-urlencoded",0
szLength db "Content-Length: ", 0
szSize db 12 dup (0)
sockfd dd 0
; sockaddr_in db 16 dup (0)
sin_family db 2 dup (0)
sin_port db 2 dup (0)
sin_addr db 4 dup (0)
sin_zero db 8 dup (0)
我强烈建议你不要使用套接字，只要使用WinInet的函数，因为你是在Windows上。这个WinAPI很容易在fASM中使用
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- 在fasm或nasm中阅读网页的源代码
